CN115884325A

CN115884325A - Communication method and communication device

Info

Publication number: CN115884325A
Application number: CN202111136894.3A
Authority: CN
Inventors: 黄甦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2023-03-31
Also published as: WO2023046190A1

Abstract

The application provides a communication method and device, which are used for reducing the power consumption of terminal equipment, prolonging the endurance time and improving the user experience. In the method, a terminal device receives first configuration information from a network device, wherein the first configuration information is used for configuring at least one downlink reference signal set; the terminal device receives the at least one downlink reference signal set based on the first configuration information; the terminal equipment measures based on the at least one downlink reference signal set to obtain a first measured value; the terminal device determines to skip the RRM measurement when the first measurement value is greater than a first threshold.

Description

Communication method and communication device

Technical Field

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

Background

With the development of the positioning technology, in order to reduce the power consumption overhead of the terminal device in the positioning process and improve the endurance time of the terminal device, the realization of low-power-consumption positioning becomes a hot topic of current research. In some possible implementations, the terminal device may be positioned by being in a low power mode to achieve low power positioning.

Currently, in a process of implementing low power consumption positioning, a terminal device needs to receive a downlink reference signal from a network device in a low power consumption mode based on configuration information of the downlink reference signal (hereinafter referred to as a downlink reference signal) for positioning to obtain time-frequency synchronization. After obtaining the time-frequency synchronization, the terminal device sends an uplink reference signal (hereinafter referred to as an uplink reference signal) for positioning to the network device in a low power consumption mode, so that the network device measures the uplink reference signal to determine the position of the terminal device, thereby positioning the terminal device.

Generally, the configuration information of the downlink reference signals of different cells may be different, and the terminal device may perform cell reselection, which may cause the configuration information of the downlink reference signals to need to be updated. In order to avoid that the downlink reference signal received by the terminal device has poor signal quality and fails to acquire time-frequency synchronization, before the terminal device receives the downlink reference signal based on the configuration information of the downlink reference signal, the terminal device needs to determine the configuration information of the downlink reference signal of the camping cell based on Radio Resource Management (RRM) measurement, and then receive the downlink reference signal based on the configuration information of the downlink reference signal of the camping cell to acquire time-frequency synchronization.

However, in the implementation process of the low power consumption positioning, the terminal device may need to exit the low power consumption mode to obtain the time-frequency synchronization based on the RRM measurement, which results in a large power consumption of the terminal device and affects user experience.

Disclosure of Invention

The application provides a communication method and device, which are used for reducing the power consumption of terminal equipment, prolonging the endurance time and improving the user experience.

The first aspect of the present application provides a communication method, which is executed by a terminal device, or is executed by a part of components (such as a processor, a chip, or a chip system) in the terminal device, or is also implemented by a logic module or software capable of implementing all or part of the functions of the terminal device. In the first aspect and possible implementations thereof, the method is described as being performed by a terminal device as an example. In the method, a terminal device receives first configuration information from a network device, wherein the first configuration information is used for configuring at least one downlink reference signal set; the terminal device receives the at least one downlink reference signal set based on the first configuration information; the terminal equipment measures based on the at least one downlink reference signal set to obtain a first measured value; the terminal device determines to skip the RRM measurement when the first measurement value is greater than a first threshold.

It should be noted that the terminal device determines to skip the RRM measurement, which may be expressed as that the terminal device skips the RRM measurement; it can also be stated that the terminal device is allowed to skip RRM measurements; it can also be stated that the terminal device is allowed to perform RRM measurements without; it can also be stated that the terminal device is allowed not to perform RRM measurements; it may also be said that the terminal device determines that RRM measurements need not be performed; it can also be stated that the terminal device does not need to perform RRM measurements; it may also be said that the terminal device determines not to perform RRM measurements; it can also be stated that the terminal device does not perform RRM measurements; it may also be stated that the terminal device is allowed to not perform RRM measurements.

Optionally, the network device that sends the first configuration information and the network device that sends the at least one downlink reference signal set may be the same network device or different network devices.

Based on the above technical solution, in receiving first configuration information from a network device, a terminal device uses at least one downlink reference signal set configured by the first configuration information for one or more cells. When the first measurement value corresponding to the at least one downlink reference signal set is greater than a first threshold value, the terminal device determines that the signal quality of the at least one downlink reference signal set is better, so that the terminal device can determine that the camping cell of the terminal device is located in the one or more cells. In other words, the terminal device may obtain time-frequency synchronization in the camping cell based on the at least one downlink reference signal set, such that the terminal device determines to skip the RRM measurement. Therefore, when the first measurement value corresponding to the at least one downlink reference signal set is greater than the first threshold value, the terminal equipment can obtain time-frequency synchronization without exiting the low-power-consumption mode to execute RRM measurement, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

The second aspect of the present application provides a communication method, which is executed by a terminal device, or is executed by a part of components (such as a processor, a chip, or a system of chips) in the terminal device, or is also implemented by a logic module or software capable of implementing all or part of the functions of the terminal device. In the second aspect and possible implementations thereof, the method is described as being performed by a terminal device as an example. In the method, a terminal device receives first configuration information from a network device, wherein the first configuration information is used for configuring a first downlink reference signal set; the terminal device receives the at least one downlink reference signal set based on the first configuration information; the terminal equipment measures based on the at least one downlink reference signal set to obtain a first measured value; the terminal equipment determines whether the SRS corresponding to at least one downlink reference signal set is valid or not based on the first measurement value.

It should be noted that the determining, by the terminal device, whether the SRS corresponding to the at least one downlink reference signal set is valid based on the first measurement value specifically includes: when the first measurement value is greater than the second threshold value, the terminal device determines whether the SRS corresponding to the at least one downlink reference signal set is valid, that is, the terminal device may send the SRS corresponding to the at least one downlink reference signal set, so that the network device locates the terminal device based on the SRS; when the first measurement value is smaller than the second threshold, the terminal device determines that the SRS corresponding to the at least one downlink reference signal set is invalid, that is, the terminal device does not transmit the SRS corresponding to the at least one downlink reference signal set, and the terminal device requests, to the network device, to update SRS configuration information (for example, the SRS configuration information may include the second configuration information or the third configuration information in the following embodiments) to transmit the SRS.

In addition, the terminal device determines whether the SRS corresponding to at least one downlink reference signal set is valid based on the first measurement value, which may be expressed as that the terminal device determines whether the SRS corresponding to at least one downlink reference signal set is available based on the first measurement value; the terminal equipment can also determine whether to transmit the SRS corresponding to at least one downlink reference signal set or not based on the first measurement value; the terminal device can also determine whether to suspend sending the SRS corresponding to at least one downlink reference signal set based on the first measurement value.

Based on the above technical solution, in the terminal device receiving the first configuration information from the network device, at least one downlink reference signal set configured by the first configuration information is used for one or more cells. The terminal device may determine whether the SRS corresponding to the at least one downlink reference signal set is valid based on the first measurement value corresponding to the at least one downlink reference signal set. When the terminal device determines that the SRS corresponding to the at least one downlink reference signal set is valid based on the first measurement value corresponding to the at least one downlink reference signal set, the terminal device determines that the signal quality of the at least one downlink reference signal set is better, so that the terminal device can send the SRS corresponding to the at least one downlink reference signal set without requesting the network device to update the SRS configuration information. Therefore, the terminal equipment can send the SRS to realize low-power-consumption positioning without exiting the low-power-consumption mode to execute the request of updating the SRS configuration information to the network equipment, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

In a possible implementation manner of the first aspect or the second aspect of the present application, the at least one downlink reference signal set includes 1 downlink reference signal set. In other words, the number of downlink references included in at least one downlink reference signal set is 1.

Optionally, when the number of downlink references included in at least one downlink reference signal set is 1, and when the downlink reference signal is a TRS, one downlink reference signal set includes one or more TRSs corresponding to CSI-RS resource sets configured as TRSs.

In a possible implementation manner of the first aspect or the second aspect of the present application, the method further includes: the terminal device receives second configuration information from the network device, wherein the second configuration information is used for configuring a first Sounding Reference Signal (SRS) associated with the at least one downlink reference signal set; and when the first measurement value is larger than a second threshold value, the terminal equipment transmits the first SRS based on the second configuration information.

Optionally, when the first measurement value is equal to the second threshold, the terminal device determines that the first SRS corresponding to the at least one downlink reference signal set is valid.

Optionally, when the first measurement value is equal to a second threshold, the terminal device transmits the first SRS based on the second configuration information.

Based on the above technical solution, the terminal device may further receive second configuration information from the network device, where the SRS that is sent by the terminal device based on the second configuration information may be used by the network device to locate the terminal device. When the first measurement value is greater than a second threshold value, the terminal device determines that the first SRS corresponding to the at least one downlink reference signal set is valid, so that the terminal device transmits the first SRS based on the second configuration information. Therefore, the terminal equipment can send the SRS to realize low-power-consumption positioning without exiting the low-power-consumption mode to execute the request of updating the SRS configuration information to the network equipment, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

In a possible implementation manner of the first aspect or the second aspect of the present application, the method further includes: and when the first measurement value is smaller than the second threshold value, the terminal equipment stops sending the first SRS.

It should be noted that, in this embodiment and subsequent embodiments, the "second threshold" used for determining that the terminal device transmits the first SRS and the "second threshold" used for determining that the terminal device suspends transmission of the first SRS may be the same or different (for example, the "second threshold" used for determining that the terminal device transmits the first SRS is greater than the "second threshold" used for determining that the terminal device suspends transmission of the first SRS).

Optionally, when the first measurement value is equal to the second threshold, the terminal device determines that the first SRS corresponding to the at least one downlink reference signal set is invalid.

Optionally, when the first measurement value is equal to the second threshold, the terminal device suspends transmitting the first SRS.

Based on the above technical solution, when the first measurement value is smaller than the second threshold, the terminal device determines that the first SRS corresponding to the at least one downlink reference signal set is invalid, so that the terminal device stops sending the first SRS. In other words, when the first measurement value is smaller than the second threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, and the terminal device needs to request the network device to update the SRS configuration information to transmit the SRS.

In a possible implementation manner of the first aspect or the second aspect of the present application, the at least one downlink reference signal set includes n downlink reference signal sets, where n is an integer greater than 1. In other words, the number of downlink references included in at least one downlink reference signal set is multiple (i.e., n).

In a possible implementation manner of the first aspect or the second aspect of the present application, the method further includes: the terminal device receives third configuration information from the network device, where the third configuration information is used to configure q SRSs associated with n downlink reference signal sets, and q is less than or equal to n; and when the first measurement value is greater than a second threshold value, the terminal device transmits a target SRS based on the third configuration information, wherein the target SRS is one of the q SRSs which is associated with a downlink reference signal set corresponding to the first measurement value in the n downlink reference signal sets.

Optionally, when the first measurement value is equal to the second threshold, the terminal device determines that the target SRS is valid.

Optionally, when the first measurement value is equal to a second threshold, the terminal device transmits the target SRS based on the third configuration information.

Based on the above technical solution, the terminal device may further receive third configuration information from the network device, where the SRS that is sent by the terminal device based on the third configuration information may be used by the network device to locate the terminal device. When the first measurement value is greater than a second threshold value, the terminal device determines that the SRS (i.e., the target SRS) associated with the downlink reference signal set corresponding to the first measurement value in the n downlink reference signal sets among the q SRSs is valid, so that the terminal device transmits the target SRS based on the third configuration information. Therefore, the terminal equipment can send the SRS to realize low-power-consumption positioning without exiting the low-power-consumption mode to execute the request for updating the third configuration information to the network equipment, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

In a possible implementation manner of the first aspect or the second aspect of the present application, the method further includes: and when the first measurement value is smaller than the second threshold value, the terminal equipment stops sending the target SRS.

It should be noted that, in this embodiment and subsequent embodiments, the "second threshold" used for determining that the terminal device transmits the target SRS and the "second threshold" used for determining that the terminal device suspends transmission of the target SRS may be the same or different (for example, the "second threshold" used for determining that the terminal device transmits the target SRS is greater than the "second threshold" used for determining that the terminal device suspends transmission of the target SRS).

Optionally, when the first measurement value is equal to the second threshold, the terminal device determines that the target SRS is invalid.

Optionally, when the first measurement value is equal to the second threshold, the terminal device suspends transmitting the target SRS.

Based on the above technical solution, when the first measurement value is smaller than the second threshold, the terminal device determines that the target SRS is invalid, so that the terminal device suspends sending the target SRS. In other words, when the first measurement value is smaller than the second threshold value, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, and the terminal device needs to request the network device to update the third configuration information to send the SRS.

In a possible implementation manner of the first aspect or the second aspect of the present application, the number q of SRSs configured by the third configuration information may include multiple implementation manners, including:

q is 1; or the like, or, alternatively,

q is equal to n, wherein the q SRS are in one-to-one correspondence with the n downlink reference signal sets; or the like, or a combination thereof,

q is greater than 1 and q is less than n, wherein each SRS included in the q SRSs corresponds to one or more downlink reference signal sets in the n downlink reference signal sets.

In a possible implementation form of the first or second aspect of the application, the second threshold is smaller than the first threshold.

Based on the above technical solution, the second threshold may be smaller than the first threshold. When the first measurement value is greater than the first threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is better, so that the terminal device does not need to perform RRM and can transmit a first SRS corresponding to the at least one downlink reference signal set, so that the network device locates the terminal device based on the first SRS. When the first measurement value is smaller than the first threshold and larger than the second threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is general, so that the terminal device performs RRM and can transmit a first SRS corresponding to the at least one downlink reference signal set, so that the network device locates the terminal device based on the first SRS. When the first measurement value is smaller than the second threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, so that the terminal device performs RRM to cause the network device to determine the camping cell, and needs to request the network device to update SRS configuration information (for example, the SRS configuration information may include the second configuration information or the third configuration information in the above embodiments) to transmit the SRS.

Optionally, the second threshold is greater than or equal to the first threshold.

In a possible implementation manner of the first aspect or the second aspect of the present application, the number of downlink reference signal sets included in the at least one downlink reference signal set is 1.

In a possible implementation manner of the first aspect or the second aspect of the present application, the number of downlink reference signal sets included in the at least one downlink reference signal set is n, where n is an integer greater than 1.

Optionally, when the number of downlink references included in at least one downlink reference signal set is n, and when the downlink reference signal is a TRS, any one of the n downlink reference signal sets includes one or more TRSs corresponding to CSI-RS resource sets configured as TRSs.

Optionally, when the number of the downlink reference signal sets included in the at least one downlink reference signal set is n, the SRSs corresponding to any two downlink reference signal sets in the n downlink reference signal sets may be the same or different, and are not limited herein.

Based on the above technical solution, at least one downlink reference signal set is used in one or more cells, and when the terminal device resides in the one or more cells, the terminal device may implement time-frequency synchronization based on the one or more downlink reference signal sets included in the at least one downlink reference signal set.

Optionally, when at least one downlink reference signal set is used in multiple cells, multiple downlink reference signal sets issued by the multiple cells may be the same or different.

In a possible implementation manner of the first aspect or the second aspect of the present application, the at least one downlink reference signal set includes a primary reference signal set and a secondary reference signal set, where a number of reference signals included in the secondary reference signal set is n-1; the terminal device measures based on the at least one downlink reference signal set, and obtaining a first measurement value includes: the terminal equipment measures the main reference signal set to obtain a second measured value; the terminal device determines the first measurement value based on the second measurement value.

Optionally, the number of reference signals included in the main reference signal set is 1.

Optionally, the terminal device may preferentially measure any one downlink reference signal set (e.g., a primary reference signal set) of the n downlink reference signal sets.

Based on the above technical solution, when at least one downlink reference signal set includes n downlink reference signal sets, the n downlink reference signal sets include a primary reference signal set and one or more secondary reference signal sets. In the process of measuring the n downlink reference signal sets, the terminal device may preferentially measure the main reference signal set to obtain a second measurement value, and then determine the first measurement value based on the second measurement value.

In some designs, the primary set of reference signals applies to at least a primary cell in which the network device that transmitted the first configuration information is located. Optionally, the primary reference signal set may also be applied to neighboring cells of the primary cell.

In some designs, the primary reference signal set applies to at least a serving cell of the terminal device when the terminal device was last in a connected state prior to a time at which the terminal device received the at least one downlink reference signal set based on the first configuration information; optionally, the primary reference signal set is further applied to neighboring cells of the serving cell, or the primary reference signal set is further applied to a cooperative cell of the serving cell.

In a possible implementation manner of the first aspect or the second aspect of the present application, the determining, by the terminal device, the first measurement value based on the second measurement value includes: when the second measurement value is larger than a third threshold value, the terminal equipment determines the second measurement value as the first measurement value; the terminal device determines to skip the measurement of the secondary reference signal set.

Based on the above technical solution, in the process of measuring n downlink reference signal sets, the terminal device may preferentially measure the primary reference signal set, and when a second measurement value corresponding to the primary reference signal set is greater than a third threshold, the terminal device determines the second measurement value corresponding to the primary reference signal set as the first measurement value. In other words, when the second measurement value corresponding to the primary reference signal set is greater than the third threshold, the terminal device determines that the camping cell of the terminal device is located in one or more cells corresponding to the primary reference signal set. After that, the terminal device does not need to measure the measurements of other reference signals (i.e. secondary reference signal sets) in the n downlink reference signal sets except for the primary reference signal set, so that the power consumption of the terminal device can be further saved.

In a possible implementation manner of the first aspect or the second aspect of the present application, the determining, by the terminal device, the first measurement value based on the second measurement value includes: when the second measurement value is smaller than a third threshold value, the terminal device measures the auxiliary reference signal set to obtain a third measurement value, wherein the number of the measurement values contained in the third measurement value is p, and p is an integer which is greater than 0 and less than or equal to n-1; the terminal device determines the first measurement value based on the second measurement value and the third measurement value.

Optionally, the terminal device measures the auxiliary reference signal set to obtain a third measurement value, which may be expressed as that the terminal device measures one or more reference signals included in the auxiliary reference signal set to obtain the third measurement value.

Based on the above technical solution, in the process of measuring n downlink reference signal sets, the terminal device may preferentially measure the primary reference signal set, and when a second measurement value corresponding to the primary reference signal set is smaller than a third threshold, the terminal device determines the first measurement value based on the second measurement value and a third measurement value corresponding to the (at least one) secondary reference signal set. Such that the terminal device may determine the first measurement value based on a third measurement value corresponding to the secondary reference signal set in a case where the second measurement value corresponding to the primary reference signal set is smaller than a third threshold value, and in a case where the third measurement value is larger, it is possible to cause the terminal device to skip the RRM measurement, thereby reducing the power consumption of the terminal device.

In a possible implementation manner of the first aspect or the second aspect of the present application, the determining, by the terminal device, the first measurement value based on the second measurement value and the third measurement value includes: the terminal equipment determines the measured value which is larger than a third threshold value in the third measured values as a first measured value; and the terminal equipment updates the secondary reference signal set corresponding to the measurement value which is greater than the third threshold value in the third measurement value into the primary reference signal set.

Based on the above technical solution, in the process of measuring n downlink reference signal sets, the terminal device may preferentially measure the primary reference signal set, and when a first measurement value of the primary reference signal set is smaller than a third threshold, the terminal device determines, as the first measurement value, a third measurement value corresponding to an auxiliary reference signal set corresponding to a measurement value of the auxiliary reference signal set that is larger than the third threshold. In other words, when the first measurement value of the primary reference signal set is smaller than the third threshold and one of the reference signals in the secondary reference signal set is larger than the third threshold, the terminal device determines that the camping cell of the terminal device is located in one or more cells corresponding to the secondary reference signal set. Thereafter, the terminal device updates the first reference signal to the main reference signal set so as to perform a low-power-consumption positioning implementation process based on the updated main reference signal set.

In a possible implementation manner of the first aspect or the second aspect of the present application, the determining, by the terminal device, the first measurement value based on the second measurement value and the third measurement value includes:

the terminal equipment determines that the first measurement value is the maximum value of the second measurement value and the third measurement value; or the like, or, alternatively,

the terminal device determines that the first measurement value is an average value of the second measurement value and the third measurement value; or the like, or, alternatively,

the terminal device determines that the first measurement value is an average value of m measurement values in the second measurement value and the third measurement value, wherein the m measurement values are all larger than a fourth threshold value, and m is an integer smaller than n; or

The terminal device determines that the first measurement value is the maximum value of k measurement values in the second measurement value and the third measurement value, and k is an integer smaller than n.

In one possible implementation form of the first or second aspect of the present application,

the at least one downlink reference signal set comprises a main reference signal set, the first measurement value is a second measurement value corresponding to the main reference signal set, and the second measurement value corresponding to the main reference signal set is greater than a third threshold value; or the like, or a combination thereof,

the at least one downlink reference signal set corresponds to n first measurement values, and the first measurement value is the maximum value of the n first measurement values; or the like, or, alternatively,

the at least one downlink reference signal set corresponds to n first measurement values, and the first measurement value is an average value of the n first measurement values; or the like, or, alternatively,

part of reference signals in the at least one downlink reference signal set correspond to m first measurement values, the m first measurement values are all larger than a third threshold value, the first measurement value is an average value of the m first measurement values, and m is an integer smaller than n; or the like, or a combination thereof,

the partial reference signals in the at least one downlink reference signal set correspond to k first measurement values, and the first measurement value is the maximum value of the k first measurement values, where k is an integer smaller than n.

Based on the technical scheme, in the process that the terminal device measures the n downlink reference signal sets, the terminal device can determine the first measurement value in the multiple modes, and the flexibility of scheme implementation is improved.

In a possible implementation manner of the first aspect or the second aspect of the present application, the method further includes: the terminal device performs the RRM measurement when the first measurement value is less than the first threshold.

It should be noted that, in this embodiment and subsequent embodiments, the "first threshold" for determining that the terminal device skips the RRM measurement and the "first threshold" for determining that the terminal device performs the RRM measurement may be the same or different (for example, the "first threshold" for determining that the terminal device skips the RRM measurement is greater than the "first threshold" for determining that the terminal device performs the RRM measurement).

Optionally, when the first measurement value is equal to the first threshold, the terminal device skips RRM measurement.

Optionally, the terminal device performs the RRM measurement when the first measurement value is equal to the first threshold.

Based on the above technical solution, in the terminal device receiving the first configuration information from the network device, at least one downlink reference signal set configured by the first configuration information is used for one or more cells. When the first measurement value corresponding to the at least one downlink reference signal set is smaller than a first threshold value, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, so that the terminal device can determine that the resident cell of the terminal device is located in other cells except the one or more cells. In other words, the terminal device may not be able to obtain time-frequency synchronization in the camped cell based on the at least one downlink reference signal set, so that the terminal device needs to perform RRM measurement and obtain time-frequency synchronization in the camped cell.

In a possible implementation manner of the first aspect or the second aspect of the present application, the first configuration information is carried in system information; or, the first configuration information is carried in a radio resource control release (rrcreelease) message.

Optionally, the first configuration information and the second configuration information (or the third configuration information) are carried in the same message.

Optionally, the first configuration information and the second configuration information (or the third configuration information) are carried in different messages.

In a possible implementation manner of the first aspect or the second aspect of the present application, a downlink reference signal included in the downlink reference signal set is a channel state information reference signal (CSI-RS); or, the downlink reference signal included in the downlink reference signal set is a Tracking Reference Signal (TRS).

Optionally, the downlink reference signal included in the downlink reference signal set is a special CSI-RS, and is mainly used for implementing high-precision downlink time frequency tracking.

In a possible implementation manner of the first aspect or the second aspect of the present application, the third threshold is greater than the first threshold.

Based on the above technical solution, the third threshold may be greater than the first threshold, so that the terminal device performs measurement of at least one downlink reference signal set as much as possible to obtain time-frequency synchronization, without performing RRM measurement.

Optionally, the third threshold is less than or equal to the first threshold.

Optionally, the third threshold is greater than the second threshold.

Based on the above technical solution, the second threshold may be greater than the third threshold, so that the terminal device performs measurement of at least one downlink reference signal set as much as possible to transmit the SRS, without performing a process of requesting the network device to update SRS configuration information.

In one possible implementation form of the first or second aspect of the present application, the first measurement value includes at least one of a Reference Signal Received Power (RSRP) and a Reference Signal Received Quality (RSRQ).

Optionally, the first measurement value is RSRP.

In a possible implementation manner of the first aspect or the second aspect of the present application, the determining, by the terminal device, to skip the RRM measurement includes: the terminal device determines to skip the RRM measurement based on first information indicating that the terminal device is allowed to perform determination whether to perform intra-frequency cell measurement or not based on a measurement result of a synchronization signal block (or referred to as a synchronization signal/PBCH block, SS/PBCH block, or SSB) of a serving cell.

In a possible implementation manner of the first aspect or the second aspect of the present application, the first information is further used to indicate that the terminal device is allowed to determine whether to perform inter-frequency/inter-RAT measurement not based on a priority of an inter-frequency or inter-Radio Access Technology (RAT) and an SSB first measurement value of a serving cell.

Optionally, the first information is pre-configured in the terminal device.

Optionally, the method further includes: the terminal equipment receives the first information sent by the network equipment.

Based on the above technical solution, when the first measurement value is greater than the first threshold, the terminal device may determine to skip the RRM measurement based on the first information. The RRM measurement skipped by the terminal device based on the first information may specifically be: in the cell reselection process, the terminal device measures the current serving cell and the neighboring cell (including cells with the same frequency, different frequency and different RATs).

In a possible implementation manner of the first aspect or the second aspect of the present application, the RRM measurement includes at least one of an intra-frequency cell measurement, an inter-frequency cell measurement, and an inter-RAT measurement.

Alternatively, the RRM measurement may be expressed as an intra-frequency cell measurement, an inter-frequency cell measurement, or an inter-RAT measurement.

Alternatively, the RRM measurement may be expressed as an intra-frequency cell measurement.

In a possible implementation manner of the first aspect or the second aspect of the present application, the first configuration information includes at least one of:

CSI-RS resource configuration information; or the like, or, alternatively,

configuring CSI-RS resource set configuration information configured as a TRS; or the like, or a combination thereof,

CSI resource configuration information of a CSI-RS resource set configured as a TRS.

Optionally, the at least one piece of configuration information corresponds to the at least one downlink reference signal set one to one.

Optionally, each of the at least one configuration information corresponds to multiple downlink reference signal sets in the at least one downlink reference signal set.

In a possible implementation manner of the first aspect or the second aspect of the present application, the first configuration information includes at least one piece of configuration information;

wherein each of the at least one configuration information comprises at least one of:

CSI-RS resource configuration information; or the like, or, alternatively,

A third aspect of the present application provides a communication device that may implement the method of the first aspect or any one of the possible implementations of the first aspect. The apparatus comprises corresponding units or modules for performing the above-described methods. The means or modules comprised by the apparatus may be implemented by software and/or hardware means. For example, the apparatus may be a terminal device, or the apparatus may be a component (e.g., a processor, a chip, or a system of chips) in the terminal device, or the apparatus may also be a logic module or software that can implement all or part of the functions of the terminal device.

The device comprises a transceiving unit and a processing unit;

the transceiver unit is configured to receive first configuration information from a network device, where the first configuration information is used to configure at least one downlink reference signal set;

the transceiver unit is further configured to receive the at least one downlink reference signal set based on the first configuration information;

the processing unit is configured to perform measurement based on the at least one downlink reference signal set to obtain a first measurement value;

the processing unit is further configured to determine to skip the RRM measurement when the first measurement value is greater than the first threshold.

A fourth aspect of the present application provides a communication device that may implement the method of the second aspect or any of the possible implementations of the second aspect. The apparatus comprises corresponding means or modules for performing the above-described methods. The means or modules comprised by the apparatus may be implemented by software and/or hardware means. For example, the apparatus may be a terminal device, or the apparatus may be a component (e.g., a processor, a chip, a system of chips, or the like) in the terminal device, or the apparatus may also be a logic module or software that can implement all or part of the terminal device functions.

The device comprises a transceiving unit and a processing unit;

the transceiver unit is configured to receive first configuration information from a network device, where the first configuration information is used to configure a first downlink reference signal set;

the processing unit is configured to receive the at least one downlink reference signal set based on the first configuration information; the terminal equipment measures based on the at least one downlink reference signal set to obtain a first measured value;

the processing unit is configured to determine whether an SRS corresponding to at least one downlink reference signal set is valid based on the first measurement value.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the at least one downlink reference signal set includes 1 downlink reference signal set. In other words, the number of downlink references included in at least one downlink reference signal set is 1.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the transceiver unit is further configured to receive second configuration information of a sounding reference signal from the network device, where the second configuration information is used to configure the first SRS; the first SRS is associated with the at least one downlink reference signal set;

the transceiver unit is further configured to transmit the first SRS based on the second configuration information when the first measurement value is greater than a second threshold.

In one possible implementation form of the third or fourth aspect of the present application,

the processing unit is further configured to suspend sending the first SRS when the first measurement value is smaller than the second threshold value.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the at least one downlink reference signal set includes n downlink reference signal sets, where n is an integer greater than 1. In other words, the number of downlink references included in at least one downlink reference signal set is multiple (i.e., n).

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the transceiver unit is further configured to receive third configuration information from the network device, where the third configuration information is used to configure q SRSs associated with n downlink reference signal sets, and q is less than or equal to n; when the first measurement value is greater than the second threshold value, the transceiver unit is further configured to transmit a target SRS based on the third configuration information, where the target SRS is one of the q SRSs associated with a downlink reference signal set corresponding to the first measurement value in the n downlink reference signal sets.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the processing unit is further configured to: and when the first measurement value is smaller than the second threshold value, the terminal equipment stops transmitting the target SRS.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the number q of SRSs configured by the third configuration information may include multiple implementation manners, including:

q is 1; or the like, or a combination thereof,

q is equal to n, wherein the q SRS correspond to the n downlink reference signal sets one by one; or the like, or, alternatively,

q is greater than 1 and q is less than n, wherein each SRS contained in the q SRS corresponds to one or more downlink reference signal sets in the n downlink reference signal sets.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the second threshold is smaller than the first threshold.

the processing unit is further configured to perform the RRM measurement when the first measurement value is less than the first threshold.

the first configuration information is carried in system information; or the like, or a combination thereof,

the first configuration information is carried in a rrc release rrcreelease message.

the downlink reference signal contained in the downlink reference signal set is a channel state information reference signal CSI-RS; or the like, or, alternatively,

the downlink reference signal included in the downlink reference signal set is a tracking reference signal TRS.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the number of downlink reference signal sets included in the at least one downlink reference signal set is 1.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the number of downlink reference signal sets included in the at least one downlink reference signal set is n, where n is an integer greater than 1.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the at least one downlink reference signal set includes a primary reference signal set and a secondary reference signal set, where the number of reference signals included in the secondary reference signal set is n-1;

the processing unit is configured to perform measurement based on the at least one downlink reference signal set, and obtaining a first measurement value includes:

the processing unit is used for measuring the main reference signal set to obtain a second measurement value;

the processing unit is configured to determine the first measurement value based on the second measurement value.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the processing unit configured to determine the first measurement value based on the second measurement value includes:

the processing unit is configured to determine the second measurement value as the first measurement value when the second measurement value is greater than a third threshold value;

the processing unit is configured to determine to skip the measurement of the secondary reference signal set.

when the second measurement value is smaller than a third threshold value, the processing unit is configured to measure the auxiliary reference signal set to obtain a third measurement value, where the number of measurement values included in the third measurement value is p, and p is an integer greater than 0 and less than or equal to n-1;

the processing unit is configured to determine the first measurement value based on the second measurement value and the third measurement value.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the processing unit is configured to determine the first measurement value based on the second measurement value and the third measurement value, and includes:

the processing unit is configured to determine, as the first measurement value, a measurement value greater than the third threshold value among the third measurement values;

the processing unit is configured to update the secondary reference signal set corresponding to the measurement value greater than the third threshold in the third measurement value to the primary reference signal set.

the processing unit is configured to determine that the first measurement value is a maximum value of the second measurement value and the third measurement value; or the like, or a combination thereof,

the processing unit is configured to determine that the first measurement value is an average of the second measurement value and the third measurement value; or the like, or, alternatively,

the processing unit is configured to determine that the first measurement value is an average value of m measurement values of the second measurement value and the third measurement value, where the m measurement values are all greater than a fourth threshold value, and m is an integer less than n; or

The processing unit is configured to determine that the first measurement value is a maximum of k measurement values of the second measurement value and the third measurement value, where k is an integer less than n.

the at least one downlink reference signal set corresponds to n measurement values, and the first measurement value is the maximum value of the n measurement values; or the like, or a combination thereof,

the at least one downlink reference signal set corresponds to n measurement values, and the first measurement value is an average value of the n measurement values; or the like, or, alternatively,

part of reference signals in the at least one downlink reference signal set correspond to m measurement values, the m measurement values are all larger than a fourth threshold value, the first measurement value is an average value of the m measurement values, and m is an integer smaller than n; or the like, or, alternatively,

the partial reference signals in the at least one downlink reference signal set correspond to k measurement values, and the first measurement value is a maximum value of the k measurement values, where k is an integer smaller than n.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the third threshold is greater than the first threshold.

the first measurement value includes at least one of a reference signal received power, RSRP, and a reference signal received quality, RSRQ.

Optionally, the first measurement value is RSRP.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the processing unit configured to determine to skip the RRM measurement includes:

the processing unit is configured to determine to skip the RRM measurement based on first information indicating that the terminal device is allowed to perform determination whether to perform intra-frequency cell measurement not based on a measurement result of a synchronization signal block SSB of the serving cell.

the first information is also used to indicate that the terminal device is allowed to determine whether to perform inter-frequency, inter-RAT measurements not based on the priorities of the inter-frequency or inter-radio access technology, RAT, and the SSB measurement results of the serving cell.

the RRM measurement includes at least one of an intra-frequency cell measurement, an inter-frequency cell measurement, and an inter-RAT measurement.

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the first configuration information includes at least one of:

CSI-RS resource configuration information; or the like, or a combination thereof,

configuring CSI-RS resource set configuration information configured as a TRS; or the like, or, alternatively,

In a possible implementation manner of the third aspect or the fourth aspect of the present application, the first configuration information includes at least one piece of configuration information, and the at least one piece of configuration information corresponds to the at least one downlink reference signal set one to one;

CSI-RS resource configuration information; or the like, or, alternatively,

In the third aspect or the fourth aspect of the embodiment of the present application, a component module of the communication device may be further configured to execute steps executed in each possible implementation manner of the first aspect or the second aspect, and refer to the first aspect or the second aspect specifically, and details are not described here again.

A fifth aspect of embodiments of the present application provides a communications apparatus, comprising at least one processor coupled with a memory;

the memory is used for storing programs or instructions;

the at least one processor is configured to execute the program or the instructions to cause the apparatus to implement the method of the first aspect or any one of the possible implementation manners of the first aspect.

A sixth aspect of embodiments of the present application provides a communications apparatus, comprising at least one processor coupled with a memory;

the memory is used for storing programs or instructions;

the at least one processor is configured to execute the program or instructions to cause the apparatus to implement the method of the second aspect or any one of the possible implementations of the second aspect.

A seventh aspect of embodiments of the present application provides a computer-readable storage medium, which stores instructions that, when executed, cause a computer to perform the method according to the first aspect or any one of the possible implementations described above, or cause a computer to perform the method according to the second aspect or any one of the possible implementations described above.

An eighth aspect of the embodiments of the present application provides a computer program product (or computer program), where the computer program product includes a computer program code, and when the computer program code runs on a computer, the computer is caused to execute the method of any one of the above-mentioned first aspect or first possible implementation manner, or the computer is caused to execute the method of any one of the above-mentioned second aspect or second possible implementation manner.

A ninth aspect of the present embodiment provides a chip system, where the chip system includes at least one processor, and is configured to implement the functions described in the first aspect or any one of the possible implementations of the first aspect, or the functions described in the second aspect or any one of the possible implementations of the second aspect.

In one possible design, the system-on-chip may also include a memory to hold instructions and/or data. The chip system may be constituted by a chip, or may include a chip and other discrete devices. Optionally, the chip system further includes an interface circuit, and the interface circuit is used for inputting or outputting instructions and/or data.

A tenth aspect of the embodiments of the present application provides a communication system, where the communication system includes at least the terminal device referred to in the first aspect or any one of the possible implementation manners of the first aspect, or the communication system includes at least the terminal device referred to in the second aspect or any one of the possible implementation manners of the second aspect.

In one possible design, the communication system further includes a network device in communication with the terminal device.

For technical effects brought by any possible implementation manner of the third aspect to the tenth aspect, reference may be made to technical effects brought by different implementation manners of the first aspect and the first aspect (or the second aspect and the second aspect), and details are not repeated here.

It should be understood that "sending" and "receiving" in this application may also be referred to as "outputting" and "receiving" may also be referred to as "inputting".

It can be seen from the above technical solutions that, in receiving first configuration information from a network device, a terminal device uses at least one downlink reference signal set configured by the first configuration information for one or more cells. When the first measurement value corresponding to the at least one downlink reference signal set is greater than a first threshold value, the terminal device determines that the signal quality of the at least one downlink reference signal set is better, so that the terminal device can determine that the camping cell of the terminal device is located in the one or more cells. In other words, the terminal device may obtain time-frequency synchronization in the camping cell based on the at least one downlink reference signal set, such that the terminal device determines to skip the RRM measurement. Therefore, when the first measurement value corresponding to the at least one downlink reference signal set is greater than the first threshold value, the terminal equipment can obtain time-frequency synchronization without exiting the low-power-consumption mode to execute RRM measurement, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

Drawings

FIG. 1 is a schematic diagram of a network architecture provided herein;

FIG. 2a is another schematic diagram of a network architecture provided herein;

FIG. 2b is another schematic diagram of the network architecture provided herein;

FIG. 3 is a schematic diagram of a communication method provided herein;

FIG. 4 is another schematic diagram of a communication method provided herein;

FIG. 5 is another schematic diagram of a communication method provided herein;

FIG. 6 is another schematic diagram of a communication method provided herein;

FIG. 7 is another schematic diagram of the communication method provided herein;

FIG. 8 is another schematic diagram of a communication method provided herein;

fig. 9 is a schematic diagram of a communication device provided herein;

fig. 10 is another schematic diagram of a communication device provided herein.

Detailed Description

First, some terms in the embodiments of the present application are explained so as to be easily understood by those skilled in the art.

(1) Terminal equipment (or called terminal, user terminal, end user, user equipment, etc.): may be a wireless terminal device capable of communicating with network devices, which may be a device that provides voice and/or data to a user, or a handheld device having wireless connection capability, or other processing device connected to a wireless modem.

A terminal may communicate with one or more core networks or the internet via a Radio Access Network (RAN). The terminal may be a mobile terminal device such as a mobile telephone (or so-called "cellular" telephone), a computer orThe data card may be, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. For example, the terminal may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a tablet (Pad), a computer with a wireless transceiving function, or the like. A terminal may also be referred to as a system, a subscription unit (subscriber unit), a subscription station (subscriber station), a mobile station (mobile station), a Mobile Station (MS), a remote station (remote station), an Access Point (AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), a user equipment (customer premise equipment, CPE), a terminal (terminal), user Equipment (UE), a Mobile Terminal (MT), and so on. The terminal device may also be a wearable device and a next generation communication system, e.g. fifth generation (5) ^th generation, 5G) terminal equipment in a communication system or terminal equipment in a network that evolves in the future, etc.

In addition, the terminal according to the present application may be widely applied to various scenarios, for example, device-to-device (D2D), vehicle-to-object (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, auto-driving, remote medical treatment, smart grid, smart furniture, smart office, smart wearing, smart transportation, smart city, and the like. The terminal can be cell-phone, panel computer, take the computer of wireless transceiving function, wearable equipment, vehicle, unmanned aerial vehicle, helicopter, aircraft, steamer, robot, arm, intelligent house equipment etc.. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal.

(2) A network device: the terminal device may be a device in a wireless network, for example, the network device may be a Radio Access Network (RAN) node (or device) that accesses the terminal device to the wireless network, and may be referred to as a radio access network device, and may also be referred to as a base station generally. Currently, some examples of RAN equipment are: a new generation base station (generation Node B, gnnodeb), a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wi-Fi) Access Point (AP), etc. In addition, in one network configuration, a network device may include a Centralized Unit (CU) node and/or a Distributed Unit (DU) node.

Optionally, a network device may include one or more cells.

Furthermore, the network device may also include a core network device, which includes, for example, an access and mobility management function (AMF), a User Plane Function (UPF), a Session Management Function (SMF), or the like.

It will be appreciated that the network device may also be other means of providing wireless communication functionality for the terminal device. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.

In this application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus, such as a system on chip, capable of supporting the network device to implement the function.

(3) The terms "system" and "network" may be used interchangeably in this application. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a alone, A and B together, and B alone, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one of A, B, or C" includes A, B, C, AB, AC, BC, or ABC. And, unless specifically stated otherwise, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the order, sequence, priority, or importance of the plurality of objects.

Furthermore, in the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion for ease of understanding.

(4) Configuration and pre-configuration:

in the application, both configuration and pre-configuration are used. Configuration means that a base station/server sends configuration information of some parameters or values of the parameters to a terminal through messages or signaling, so that the terminal determines communication parameters or resources during transmission according to the values or the information.

The pre-configuration and the configuration may be parameter information or parameter values negotiated by the base station/server and the terminal device in advance, parameter information or parameter values adopted by the base station/server or the terminal device specified by a standard protocol, or parameter information or parameter values stored in the base station/server or the terminal device in advance. This is not limited in this application.

Further, these values and parameters may be changed or updated.

In order to facilitate understanding of the method provided by the embodiment of the present application, a system architecture of the method provided by the embodiment of the present application will be described below. It is to be understood that the system architecture described in the embodiments of the present application is for more clearly illustrating the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided in the embodiments of the present application.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application. Referring to fig. 1, the communication system includes a terminal device 101, a next Generation Node B (gNB) 102, a next Generation evolved Node B (ng-eNB) 103, an access and mobility management function (AMF) 104, and a Location Management Function (LMF) 105.LMF105 is a network element, module or component in the NR core network that provides a location function for the end device.

Optionally, the communication system further includes an enhanced serving mobile location center (E-SMLC) 106 and a secure user plane location platform (SLP) 107.E-SMLC106 is a network element, module or component in a 4G core network that provides location functionality. SLP107 is a network element, module, or component in a 4G core network that handles user plane secure positioning protocols.

Therein, the terminal device 101 communicates with an access network device (e.g., gNB102 or ng-eNB103 in fig. 1) via a Uu interface. The ng-eNB103 is an access network device in a Long Term Evolution (LTE) communication system, and the gNB102 is an access network device in an NR communication system. In the communication system, the access network devices communicate with each other through an Xn interface, and the access network devices communicate with the AMF104 through an NG-C interface. The AMF104 communicates with the LMF105 via an NL1 interface, and the AMF104 corresponds to a router that communicates between access network equipment and the LMF 105. The LMF105 is used for performing location calculation of the location of the terminal device.

The above fig. 1 shows only an example of two access network devices of a communication system comprising a gNB and a ng-eNB. In practical applications, the communication system may include at least one access network device, and the application is not limited thereto.

In the present application, in the communication system shown in fig. 1, the LMF is a name in the current communication system, and in a future communication system, the name of the LMF may change as the communication system evolves. In the current communication system or the future communication system, as long as the functional network element has a function similar to that of the LMF, the LMF in the embodiment of the present application can be understood and is applicable to the communication method provided in the embodiment of the present application.

As an example, the communication system applied in the present application can also include single or multiple network devices and single or multiple terminal devices as shown in fig. 2a and fig. 2 b.

Alternatively, as shown in fig. 2a, a single network device may transmit data or control signaling to a single or multiple terminal devices.

Optionally, as shown in fig. 2b, multiple network devices may also transmit data or control signaling for a single terminal device at the same time.

In the communication system shown in fig. 1, based on the control of a core network Location Management Function (LMF), an access network and a terminal-assisted architecture may be used to implement a Location process of a terminal device.

For example, taking a terminal device as an UE as an example, the current Rel-16 positioning standardizes an SRS for positioning, and a multiple-input multiple-output (MIMO) SRS of Rel-15, so as to support the following positioning techniques:

uplink time difference of arrival (UL-TDOA) location technique: each cell measures uplink relative time of arrival (UL RTOA) of the SRS signal of the UE, and reports the measurement result to the LMF;

uplink angle of arrival (UL-AoA) location technique: each cell measures UL AoA for the SRS signal of the UE and reports the measurement result to the LMF;

multi-cell round trip time (Multi-RTT) positioning techniques: the method comprises the steps that the UE measures the receiving and transmitting time difference (Rx-Tx time difference) of the UE for a Positioning Reference Signal (PRS) of each cell, and reports the measurement result to an LMF; each cell measures the Rx-Tx time difference of gNB for the SRS signal of UE, and reports the measuring result to LMF.

In addition, in order to reduce power consumption of the terminal when a low service is required and also to consider fast access connection when a service arrives, the terminal device in the communication system may perform communication based on a low power consumption state, which is a radio access control INACTIVE (RRC _ INACTIVE) state (or referred to as INACTIVE state). In addition, the terminal device may be in a radio access control IDLE (RRC _ IDLE) state (or referred to as an IDLE state) or a radio access control CONNECTED (RRC _ CONNECTED) (or referred to as a CONNECTED state) for communication.

The following will describe services supported by the terminal device in different states, including:

services supported by the rrc _idlestate include at least one of:

-PLMN selection (PLMN selection);

-receiving a system information Broadcast (Broadcast of system information);

-cell mobility: cell re-selection mobility;

-receiving a 5GC initiated Paging for mobile terminated data is initiated by a by 5 GC;

NAS configures core network paging discontinuous reception (DRX for CN paging configured by NAS).

Services supported by the rrc _inactivestate include at least one of:

-PLMN selection；

-Broadcast of system information；

-Cell re-selection mobility；

-receiving a next generation access network initiated page (Paging is initiated by NG-RAN (RAN Paging));

-access network notification area (RAN-based notification area (RNA) is managed by NG-RAN) supporting next generation access network management;

-next generation access network configured access network paging discontinuous reception (DRX for RAN paging configured by NG-RAN);

-the terminal establishes a 5 GC-next generation connection between the access networks for control plane and user plane (5 GC-NG-RAN connection (both C/U-planes) is established for UE);

-The terminal and The next generation access network storing The terminal Inactive state access stratum context (The UE Inactive AS context stored in NG-RAN and The UE);

-next generation access network aware of the access network notification area (NG-RAN knowledge the RNA while the UE keys to) where the terminal is located;

the services supported by the rrc _connectedstate include at least one of:

-the terminal establishes 5 GC-connection of control plane and user plane between next generation access networks (5 GC-NG-RAN connection (booth C/U-planes) is established for UE);

-The terminal and The next generation access network store terminal inactive state access stratum contexts (The UE AS context is stored in NG-RAN and The UE);

-NG-RAN knows the cell which the UE belongs to；

-transmitting unicast data to/from the UE to/from the terminal;

network controlled mobility and mobility measurements (Network controlled mobility including measurements).

As can be seen from the above, in the RRC _ CONNECTED state, the terminal generally supports SRS transmission based on the traffic "Transfer of unicast data to/from the terminal". At this time, if the terminal sends a cell handover, the SRS configuration in the corresponding target cell is reconfigured by the target cell (or called the target cell, or called a cell after handover, etc.), and is sent from the source cell (or called a cell before handover) to the terminal via a handover command. After the terminal establishes connection in the target cell, the SRS configuration of the target cell starts to be applicable.

In future communication systems (e.g., rel-17), positioning that will support RRC _ INACTIVE state includes the terminal device measuring PRS and sending SRS in RRC _ INACTIVE state, and the terminal device reporting positioning data (e.g., PRS measurement result) to the base station/core network in RRC _ INACTIVE state to reduce power consumption of the terminal. Since the terminal may perform cell reselection in the RRC _ INACTIVE state without notifying the network side (as long as no radio access network-based Notification Area (RAN-based Notification Area, abbreviated as RNA Notification Area) update is triggered), a behavior of the SRS configuration used by the terminal in the RRC _ INACTIVE state when the cell reselection occurs (hereinafter, the behavior is abbreviated as low power consumption positioning) is not clear, and a corresponding specific scheme is still under discussion.

Generally, cell reselection refers to a process of selecting a best cell to provide a service signal by monitoring signal quality of a neighboring cell and a current cell in an RRC _ IDLE state or an RRC _ INACTIVE state of a terminal device. Cell reselection may include the following 3 procedures:

1. measuring a current service cell and an adjacent cell (including cells with same frequency, different frequency and different systems) according to a measurement starting standard;

2. judging whether the adjacent cell signal meets the reselection standard or not;

3. if yes, reselection is started, system Information of the new cell is received (for example, system Information Block 1, sib1), and if the access is not limited (for example, an operator may have some reserved cells or cells with limited access), the new cell is resided. If not, the current service cell is still remained;

two parameters, namely cell reselection priority and signal quality of a currently camped cell, need to be considered during the measurement of the neighboring cell. The process can be briefly described as follows: the priority is higher than the current cell, and the measurement is started unconditionally no matter how good the quality of the current cell is; the terminal device measures the signal quality of the current resident cell and compares the signal quality with the quality standard issued by the network, if the signal quality is better than the standard, the adjacent cell is not measured, and if the signal quality is worse than the standard, the adjacent cell is measured. And after cell reselection measurement, cell quality is judged, cell reselection is carried out, and relevant references comprise service cell signal quality, neighbor cell signal quality, a network issued reselection threshold value and cell access parameters.

Optionally, the cell access parameter includes whether the cell is barred (barred), reserved (reserved), or access class, etc.).

In a possible implementation process of low power consumption positioning, the terminal device needs to receive a downlink reference signal from the network device in a low power consumption mode to obtain time-frequency synchronization based on configuration information of the downlink reference signal (hereinafter referred to as a downlink reference signal) used for positioning. After obtaining the time-frequency synchronization, the terminal device sends an uplink reference signal (hereinafter referred to as an uplink reference signal) for positioning to the network device in a low power consumption mode, so that the network device measures the uplink reference signal to determine the position of the terminal device, thereby positioning the terminal device.

Optionally, the terminal device being in the low power consumption mode may refer to the terminal device being in an RRC _ INACTIVE state or an RRC _ IDLE state.

In a solution to the above technical problem, the terminal may determine a cell list based on a configured manner or a preconfigured manner, where SRS configurations corresponding to one or more cells included in the cell list may be the same. When the terminal device moves in the one or more cells, the terminal device can still continue to use the SRS configuration without requesting the network device to update the SRS configuration.

However, the problem with this implementation is that: after receiving the cell list associated with the SRS configuration, the terminal device determines whether the SRS configuration is available, which is a precondition that the terminal device continuously performs mobility measurement in an RRC _ INACTIVE state. That is, the terminal device needs to continuously perform the neighbor cell measurement, and continuously evaluate whether the cell reselection condition is satisfied by the currently camped cell compared with the neighbor cell. After deciding to reselect a cell, it is also necessary to read the system information of the new camped cell. These actions have no additional use for positioning, but increase the power consumption of the terminal.

In addition, the conventional INACTIVE cell mobility measurement is based on SSB, and the corresponding terminal synchronization is also based on SSB. Since the time domain position of the SSB is relatively fixed and the time period from the synchronization of the SSB to the sending of the SRS by the terminal may exceed 15ms in a conventional SSB period of 20 milliseconds (ms), the clock synchronization needs to be maintained for the terminal within 15ms, which means that the terminal cannot enter a sleep state, thereby causing an increase in power consumption.

In order to solve the technical problem, the present application provides a communication method and apparatus, so as to reduce power consumption of a terminal device, increase duration, and improve user experience.

Referring to fig. 3, a schematic diagram of a communication method provided in the present application is shown, which includes the following steps.

S101, the network equipment sends first configuration information.

In this embodiment, the network device sends the first configuration information to the terminal device in step S101, and accordingly, the terminal device receives the first configuration information from the network device in step S101. Specifically, the first configuration information sent by the network device in step S101 is used to configure at least one downlink reference signal set.

Optionally, the downlink reference signal included in the downlink reference signal set is a channel state information reference signal (CSI-RS); or, the downlink reference signal included in the downlink reference signal set is a Tracking Reference Signal (TRS).

Optionally, the downlink reference signal included in the downlink reference signal set is a special CSI-RS, and is mainly used for implementing high-precision downlink time-frequency tracking.

In a possible implementation manner, in step S101, the terminal device is in a CONNECTED state, and receives the first configuration information from the network device.

Wherein the first configuration information is carried in system information; or, the first configuration information is carried in the rrcreelease message.

In one possible implementation manner, the first configuration information sent by the network device to the terminal device in step S101 includes at least one of the following:

CSI-RS resource configuration information; or the like, or, alternatively,

For example, one downlink reference signal set may include one or more TRSs, where each TRS corresponds to one CSI-RS resource set (resource set).

In another possible implementation manner, the first configuration information sent by the network device to the terminal device in step S101 includes at least one piece of configuration information, where the at least one piece of configuration information corresponds to the at least one downlink reference signal set one to one;

CSI-RS resource configuration information; or the like, or, alternatively,

Specifically, the number of reference signals included in at least one downlink reference signal set may be one or n (n is an integer greater than 1). When the number of reference signals included in at least one downlink reference signal set may be n, in the first configuration information used for configuring the n reference signal sets, the number of configuration information included in the first configuration information may be the same as the number of reference signals included in at least one downlink reference signal set (i.e., the implementation manner in one-to-one correspondence), or may be different from the number of reference signals included in at least one downlink reference signal set (i.e., the first configuration information corresponds to a plurality of downlink reference signal sets), so that the first configuration information sent by the network device to the terminal device in step S101 may be implemented in multiple manners.

Optionally, when the number of downlink references included in at least one downlink reference signal set is 1, and a downlink reference signal is a TRS, one downlink reference signal set includes TRSs corresponding to one or more CSI-RS resource sets configured as TRSs.

S102, the terminal equipment receives at least one downlink reference signal set based on the first configuration information.

In this embodiment, in step S102, the network device sends at least one downlink reference signal set to the terminal device based on the first configuration information sent in step S101. Correspondingly, in step S102, the terminal device receives at least one downlink reference signal set from the network device based on the first configuration information received in step S101.

Optionally, the terminal device receives and obtains a part or all of at least one downlink reference signal set in step S102.

Optionally, the network device that sends the first configuration information in step S101 and the network device that sends the at least one downlink reference signal set in step S102 may be the same network device or different network devices.

In one possible implementation manner, in step S102, the terminal device is in an INACTIVE state or an IDLE state, and receives at least one downlink reference signal set based on the first configuration information.

S103, the terminal equipment measures based on at least one downlink reference signal set to obtain a first measurement value.

In this embodiment, the terminal device performs measurement based on the at least one downlink reference signal set received in step S102 to obtain a first measurement value.

In one possible implementation, the first measurement value includes at least one of a Reference Signal Received Power (RSRP) and a Reference Signal Received Quality (RSRQ). In other words, the first measurement value may specifically be RSPR, or the first measurement value may specifically be RSPQ, or the first measurement value may specifically be RSPR and RSPQ, or other implementations, which are not limited herein.

S104, when the first measurement value is greater than the first threshold value, the terminal device determines to skip the RRM measurement.

In this embodiment, when the terminal device determines that the first measurement value obtained in step S103 is greater than the first threshold, the terminal device determines to skip the RRM measurement in step S104.

It should be noted that, in step S104, when the first measurement value is greater than the first threshold, the terminal device determines to skip the RRM measurement, which may be expressed as that the terminal device skips the RRM measurement; it can also be stated that the terminal device is allowed to skip RRM measurements; it can also be stated that the terminal device is allowed to perform RRM measurements without; it can also be stated that the terminal device is allowed not to perform RRM measurements; it may also be stated that the terminal device determines that RRM measurements need not be performed; it can also be stated that the terminal device does not need to perform RRM measurements; it may also be said that the terminal device determines not to perform RRM measurements; it can also be said that the terminal device does not perform RRM measurements; it can also be stated that the terminal device is allowed not to perform RRM measurements.

Optionally, before step S104, the method further includes that the terminal device receives the first threshold sent by the network device. The first threshold may be carried in the same message as the first configuration information sent by the network device in step S101. Alternatively, the first threshold may be carried in a different message from the first configuration information sent by the network device in step S101, which is not limited herein.

Optionally, the first threshold is pre-configured in the terminal device.

In one possible implementation, the determining, by the terminal device, to skip the RRM measurement in step S104 includes: the terminal device determines to skip the RRM measurement based on first information indicating that the terminal device is allowed to perform determination whether to perform intra-frequency cell measurement not based on the measurement result of the SSB of the serving cell.

Further, the first information may also be used to indicate that the terminal device is allowed to determine whether to perform inter-frequency, inter-RAT measurements not based on the priority of the inter-frequency or inter-Radio Access Technology (RAT) and the SSB measurement result of the serving cell.

Optionally, the first information is pre-configured in the terminal device.

Optionally, before step S104, the method further includes: the terminal equipment receives the first information sent by the network equipment.

In particular, the terminal device may determine to skip the RRM measurement based on the first information when the first measurement value is greater than the first threshold. The RRM measurement skipped by the terminal device based on the first information may specifically be: in the cell reselection process, the terminal device measures the current serving cell and the neighboring cell (including cells with the same frequency, different frequency and different RATs).

In a possible implementation manner, the terminal device determines in step S104 that the skipped RRM measurement may specifically include at least one of an intra-frequency cell measurement, an inter-frequency cell measurement, and an inter-RAT measurement.

Based on the above technical solution, in step S101, the terminal device receives first configuration information from the network device, where at least one downlink reference signal set configured by the first configuration information is used for one or more cells. When the first measurement value corresponding to the at least one downlink reference signal set is greater than the first threshold, the terminal device determines in step S103 that the signal quality of the at least one downlink reference signal set is better, so that the terminal device can determine that the camping cell of the terminal device is located in the one or more cells. In other words, the terminal device may obtain time-frequency synchronization in the camping cell based on the at least one downlink reference signal set, so that the terminal device determines to skip the RRM measurement in step S104. Therefore, when the first measurement value corresponding to the at least one downlink reference signal set is greater than the first threshold value, the terminal equipment can obtain time-frequency synchronization without exiting the low-power-consumption mode to execute RRM measurement, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

In a possible implementation manner, in the implementation procedure of step S104, when the first measurement value is smaller than the first threshold, the terminal device performs the RRM measurement.

Optionally, the terminal device determines to skip the RRM measurement when the first measurement value is equal to the first threshold.

Specifically, in step S101, the terminal device receives first configuration information from the network device, where at least one downlink reference signal set configured by the first configuration information is used for one or more cells. When the terminal device determines that the first measurement value corresponding to the at least one downlink reference signal set is smaller than the first threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, so that the terminal device can determine that the camping cell of the terminal device is located in other cells except the one or more cells. In other words, the terminal device may not be able to obtain time-frequency synchronization in the camping cell based on the at least one downlink reference signal set, so that the terminal device needs to perform RRM measurement and obtain time-frequency synchronization in the camping cell.

And S105, the terminal equipment determines whether the SRS is effective or not based on the first measurement value.

In this embodiment, in step S105, the terminal device determines whether an SRS corresponding to at least one downlink reference signal set is valid based on the first measurement value obtained in step S103.

Optionally, after step S103, the terminal device may execute step S104 to determine whether to perform RRM measurement, and the terminal device executes step S105 to transmit SRS, so as to enable the network device to locate the terminal device. Alternatively, the terminal device may perform step S104 to determine whether to perform the RRM measurement without performing step S105. Alternatively, the terminal device may not perform the process of determining whether to perform the RRM measurement in step S104, but perform step S105 to transmit the SRS, so as to enable the network device to locate the terminal device, which is not limited herein.

It should be noted that, in step S105, the determining, by the terminal device, whether the SRS corresponding to at least one downlink reference signal set is valid specifically includes: when the first measurement value is greater than the second threshold value, the terminal device determines whether the SRS corresponding to the at least one downlink reference signal set is valid, that is, the terminal device may send the SRS corresponding to the at least one downlink reference signal set, so that the network device locates the terminal device based on the SRS; when the first measurement value is smaller than the second threshold value, the terminal device determines that the SRS corresponding to the at least one downlink reference signal set is invalid, that is, the terminal device does not send the SRS corresponding to the at least one downlink reference signal set, and the terminal device requests the network device to update SRS configuration information to send the SRS.

In addition, in step S105, the terminal device determines, based on the first measurement value, whether the SRS corresponding to at least one downlink reference signal set is valid, which may be stated that the terminal device determines, based on the first measurement value, whether the SRS corresponding to at least one downlink reference signal set is available; the terminal device may further determine whether to transmit an SRS corresponding to at least one downlink reference signal set based on the first measurement value; the terminal device can also determine whether to suspend sending the SRS corresponding to at least one downlink reference signal set based on the first measurement value.

Optionally, before step S104, the method further includes that the terminal device receives the second threshold sent by the network device. The second threshold may be carried in the same message as the first configuration information sent by the network device in step S101. Alternatively, the second threshold may be carried in a different message from the first configuration information sent by the network device in step S101, which is not limited herein.

Optionally, the second threshold is pre-configured in the terminal device.

In a possible implementation manner, in the foregoing step S101, the first configuration information received by the terminal device from the network device is used to configure at least one downlink reference signal set, where the number of downlink reference signal sets in the at least one downlink reference signal set may be one or more. In the following, a plurality of implementation manners of SRSs corresponding to at least one downlink reference signal set will be described with respect to differences of downlink reference numbers included in the at least one downlink reference signal set.

In an implementation example, in the foregoing step S101, the first configuration information received by the terminal device from the network device is used to configure one downlink reference signal set, in other words, the number of downlink references included in at least one downlink reference signal set is 1.

Before step S105, the method further comprises: the terminal device receives second configuration information from the network device, wherein the second configuration information is used for configuring a first SRS; the first SRS is associated with the at least one downlink reference signal set; and when the first measurement value is larger than a second threshold value, the terminal equipment transmits the first SRS based on the second configuration information.

Specifically, before step S105, the terminal device may further receive second configuration information from the network device, where an SRS transmitted by the terminal device based on the second configuration information may be used by the network device to locate the terminal device. When the first measurement value is greater than the second threshold, the terminal device determines in step S105 that the first SRS corresponding to the at least one downlink reference signal set is valid, so that the terminal device transmits the first SRS based on the second configuration information. Therefore, the terminal equipment can send the SRS to realize low-power-consumption positioning without exiting the low-power-consumption mode to execute the request of updating the SRS configuration information to the network equipment, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

In a possible implementation manner, in the implementation process of step S105, when the first measurement value is smaller than the second threshold, the terminal device suspends transmitting the first SRS.

Specifically, when the first measurement value is smaller than the second threshold, the terminal device determines that the first SRS corresponding to the at least one downlink reference signal set is invalid, so that the terminal device suspends sending the first SRS. In other words, when the first measurement value is smaller than the second threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, and the terminal device needs to request the network device to update the SRS configuration information to transmit the SRS.

In another implementation example, in the foregoing step S101, the first configuration information received by the terminal device from the network device is used to configure multiple downlink reference signal sets, in other words, the number of downlink references included in at least one downlink reference signal set is multiple (i.e., n).

Before step S105, the method further comprises: the terminal device receives third configuration information from the network device, where the third configuration information is used to configure q SRSs associated with n downlink reference signal sets, and q is less than or equal to n; and when the first measurement value is greater than a second threshold value, the terminal device transmits a target SRS based on the third configuration information, wherein the target SRS is one of the q SRSs which is associated with a downlink reference signal set corresponding to the first measurement value in the n downlink reference signal sets.

Optionally, the number q of SRSs configured by the third configuration information may include multiple implementation manners, including:

q is 1; or the like, or, alternatively,

q is equal to n, wherein the q SRS correspond to the n downlink reference signal sets one by one; or the like, or a combination thereof,

Specifically, before step S105, the terminal device may further receive third configuration information from the network device, where an SRS transmitted by the terminal device based on the third configuration information may be used by the network device to locate the terminal device. When the first measurement value is greater than the second threshold, the terminal device determines in step S105 that the target SRS is valid, so that the terminal device transmits the target SRS based on the third configuration information. Therefore, the terminal equipment can send the SRS to realize low-power-consumption positioning without exiting the low-power-consumption mode to execute the request of updating the SRS configuration information to the network equipment, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

In a possible implementation manner, in the implementation process of step S105, when the first measurement value is smaller than the second threshold, the terminal device suspends transmitting the target SRS.

Optionally, when the first measurement value is equal to the second threshold, the terminal device determines that the target SRS corresponding to the at least one downlink reference signal set is invalid.

Specifically, when the first measurement value is smaller than a second threshold value, the terminal device determines that the target SRS is invalid, so that the terminal device suspends transmitting the target SRS. In other words, when the first measurement value is smaller than the second threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, and the terminal device needs to request the network device to update the SRS configuration information to transmit the SRS.

Optionally, in the foregoing implementation example, the first configuration information and the second configuration information (or the third configuration information) that are sent by the network device in step S101 are carried in the same message.

Optionally, in the foregoing implementation example, the first configuration information and the second configuration information (or the third configuration information) sent by the network device in step S101 are carried in different messages.

Optionally, in the foregoing implementation example, when the first measurement value is equal to the second threshold, the terminal device determines that the first SRS (or the target SRS) corresponding to the at least one downlink reference signal set is valid.

Optionally, in the foregoing implementation example, when the first measurement value is equal to a second threshold, the terminal device transmits the first SRS (or the target SRS) based on the second configuration information.

Optionally, in the above implementation example, the second threshold is smaller than the first threshold. In particular, the second threshold may be smaller than the first threshold. When the first measurement value is greater than the first threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is better, so that the terminal device does not need to perform RRM in step S104 and the terminal device may send the first SRS corresponding to the at least one downlink reference signal set in step S105, so that the network device locates the terminal device based on the first SRS. When the first measurement value is smaller than the first threshold and larger than the second threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is general, so that the terminal device performs RRM in step S104 and the terminal device may send a first SRS corresponding to the at least one downlink reference signal set in step S105, so that the network device locates the terminal device based on the first SRS. When the first measurement value is smaller than the second threshold, the terminal device determines that the signal quality of the at least one downlink reference signal set is poor, so that the terminal device performs RRM in step S104 to cause the network device to determine the camping cell, and needs to request the network device to update SRS configuration information to transmit the SRS.

Based on the above technical solution, in step S101, the terminal device receives first configuration information from the network device, where at least one downlink reference signal set configured by the first configuration information is used for one or more cells. In step S105, the terminal device may determine whether the SRS corresponding to the at least one downlink reference signal set is valid based on the first measurement value corresponding to the at least one downlink reference signal set. In step S105, when the terminal device determines that the SRS corresponding to the at least one downlink reference signal set is valid based on the first measurement value corresponding to the at least one downlink reference signal set, the terminal device determines that the signal quality of the at least one downlink reference signal set is better, so that the terminal device may send the SRS corresponding to the at least one downlink reference signal set without requesting the network device to update the SRS configuration information. Therefore, the terminal equipment can send the SRS to realize low-power-consumption positioning without exiting the low-power-consumption mode to execute the request of updating the SRS configuration information to the network equipment, so that the power consumption of the terminal equipment is reduced, the endurance time is prolonged, and the user experience is improved.

In the foregoing step S101, the first configuration information received by the terminal device from the network device is used to configure at least one downlink reference signal set, where the number of downlink reference signal sets in the at least one downlink reference signal set may be one or more. Accordingly, the terminal device may perform a measurement procedure in step S103 based on one or more downlink reference signal sets. The following further describes an implementation scenario in the implementation example shown in fig. 4 and 5.

In a first implementation manner, the number of downlink reference signal sets included in the at least one downlink reference signal set is 1.

It should be understood that, as described in the foregoing step S101, the number of the at least one downlink reference signal set configured by the first configuration information may be 1. At this time, the first configuration information may be configuration information corresponding to 1 independent CSI-RS resource, may also be configuration information corresponding to 1 CSI-RS resource set configured as a TRS (for example, 1 CSI-RS resource set configured as a TRS may include 2 CSI-RS resources in the same timeslot, or may include 4 CSI-RS resources in two adjacent timeslots), or may also be configuration information corresponding to 1 CSI resource configuration including one or more CSI-RS resource sets configured as a TRS (for example, 1 CSI resource configuration corresponding to one or more CSI-RS resource sets configured as a TRS is described in an implementation manner of a channel state information-resource configuration information element (CSI-ResourceConfig IE) in a 38.331 standard document corresponding to a CSI resource configuration including one or more CSI-RS resource sets configured as a TRS).

The first implementation will be described in detail below with reference to the implementation examples shown in fig. 4 and 5. For convenience of description, in the following example, the downlink reference signals included in at least one downlink reference signal set are 1 TRS, and the first measurement value is RSRP (accordingly, the first threshold is a first RSPR threshold, and the second threshold is a second RSPR threshold) as an example.

In one implementation manner, after receiving the first configuration information in step S101, the terminal device may enter a low power consumption standby mode (e.g., INACTIVE state or IDLE state). After that, in the low power consumption standby mode, corresponding to the deep sleep (deep sleep) state shown in fig. 4 (the height of the histogram shown in fig. 4 indicates how much power consumption is, that is, the higher the height is, the higher the power consumption is, the lower the height is), the terminal device wakes up in advance by providing coarse timing by the very low power consumption internal clock at the time when the periodic SRS is about to be transmitted. After the power consumption ramp up (ramp up) time, the terminal device completes power-on and software and program loading, and starts the radio frequency channel to receive the TRS in step S102 to complete time frequency synchronization.

In addition to the synchronization itself, the terminal device may obtain RSRP by measuring TRS in step S103, and is used to determine whether to skip the RRM reference and whether SRS corresponding to TRS is available in step S104 and step S105. The method specifically comprises the following steps:

if the RSRP of the TRS is higher than the first RSRP threshold, the terminal device does not need to perform IDLE or INACTIVE mobility measurement (i.e., RRM measurement), and at this time, if multiple cells transmit the same TRS (i.e., multiple cells transmit the TRS using a Single Frequency Network (SFN) method), the terminal device does not need to sense a serving cell change caused by mobility.

If the RSRP of the TRS is lower than the first RSRP threshold value, the terminal equipment starts to perform mobility measurement (RRM measurement) of IDLE or INACTIVE, wherein the RRCRelease message or the same-frequency, different-frequency and different-RAT neighbor cells configured by the serving cell SIB of the terminal equipment are used for measuring SSB or CSI-RS of the neighbor cells, and the resident cell is determined based on the cell selection and cell reselection process in the IDLE or INACTIVE state determined by TS 38.304.

If the RSRP of the TRS is higher than the second RSRP threshold, the terminal device may send an SRS corresponding to the TRS.

If the RSRP of the TRS is lower than the second RSRP threshold, the terminal device may not send the SRS corresponding to the TRS, and if the terminal device still needs to send the SRS, the terminal device may initiate access to the camping cell, and request to update the SRS or request to use SRS configuration to send the SRS.

Optionally, the RSRP of the TRS is generally CSI-RSRP, because the TRS is a special CSI-RS. Meanwhile, the CSI-RSRP may be the RSRP of layer 1 or the RSRP of layer 3.

For example, if the RSRP is the RSRP of layer 1, the RSRP is obtained by direct physical layer measurement.

For another example, if the RSRP is the RSRP of layer 3, the RSRP is obtained by filtering the physical layer measurement report for multiple times through layer 3. Illustratively, the filtering method satisfies the following manner:

F _n ＝(1-α)F _n-1 +αM _n ；

wherein, F _n For the nth filtered output, corresponding to F _n-1 For the n-1 th filtered output, M _n The RSRP value reported to layer 3 for the physical layer before the nth filtering. In addition, F ₀ ＝M ₁ Ensuring that the first filtering output is equal to the physical layer reported value.

Generally, the first RSRP threshold is higher than the second RSRP threshold, so that the terminal device behaves as if RSRP is higher than the first RSRP threshold, and does not perform RRM, but uses SRS; performing RRM between the first RSRP and the second RSRP threshold value, and using SRS; and when the value is lower than the second RSRP threshold, RRM is performed, the SRS cannot be used, and the access network is required to request to update the SRS or request to transmit the SRS by using SRS configuration.

After the SRS is transmitted in step S105, the terminal device finishes powering down after the power down (ramp down) time, and returns to the standby mode with extremely low power consumption again.

In the above process, the terminal device needs to wake up (i.e. ramp up) each time to complete time-frequency synchronization because the internal clock of the terminal device has poor stability and drift. Meanwhile, since the TRS location is more flexible than the SSB location, it may be configured in the SRS slot (or one or two slots before the SRS slot), as shown in fig. 5, the SRS-transmitting time slot is slot 3, and the TRS-receiving time slot may be located in at least one of slot 1, slot 2, and slot 3. Thus, as shown in fig. 4, the total duration of the synchronization by the TRS and the SRS transmission by the terminal device can be short, for example, less than 1ms, which can reduce the power consumption of the terminal device.

A specific example of the first implementation is described in fig. 6 and 7.

In the scenario shown in fig. 6, there are 9 cells, denoted as C1-C9. Of these, C1-C6 transmission TRS1, C5-C9 transmission TRS2 (TRS 1 is different from TRS 2), note that C5, C6 are located at the boundary at this time, and the TRS1 and TRS2 are transmitted at the same time. The transmission mode of the TRS1 may be SFN, i.e. the C1-C6 transmit the same TRS1 using the same time-frequency resources. The transmission mode of the TRS2 is also SFN, i.e. the C5-C9 use the same time-frequency resource to transmit the same TRS2.

The direction of movement of the terminal is depicted by the dashed line in fig. 6. When the terminal releases (releases) the connection from the network, the terminal may receive configuration information from the C1 cell, where the configuration information includes the configuration of the TRS1 and the configuration of the SRS1 corresponding to the TRS1.

Initially, the terminal is located under the enclosure of C1-C6, RSRP of TRS1 is high and is higher than the first threshold, and the terminal does not need to make (or skip) RRM measurement (as shown by arrow 701 in fig. 7), and configuration of SRS1 corresponding to TRS1 can be used, so that the terminal can transmit SRS1 corresponding to TRS (as shown by arrow 704 in fig. 7).

Then, as the terminal moves, the terminal moves out of the C1-C5 enclosure, the RSRP of the TRS1 gradually decreases, and when the RSRP is lower than the first threshold (but higher than the second threshold), the terminal needs to start RRM measurement (as shown by arrow 702 in fig. 7), that is, the terminal configures an SSB or a CSI-RS of a measurement neighboring cell based on the SIB configured for C1, and performs cell reselection based on the cell reselection criterion configured for SIB for C1; if the terminal camps on a new cell selected based on the cell reselection criterion, the terminal needs to configure the SSB or CSI-RS of the measurement neighboring cell based on the neighboring cells with the same frequency and different frequency configured by the SIB of the new camping cell, and further performs cell reselection based on the cell reselection criterion configured by the SIB of the new camping cell, but the configuration of the SRS1 corresponding to the TRS1 may be continuously used (as shown by an arrow 704 in fig. 7).

Optionally, if the terminal determines that the configuration of the SRS1 corresponding to the TRS1 further includes a cell list applicable to the SRS, the terminal further needs to determine whether the current camping cell is in the cell list applicable to the SRS, and the terminal cannot use the camping cell unless the current camping cell is in the SRS resource.

Then, as the terminal moves, the RSRP of the TRS1 of the terminal decreases to be lower than the second threshold, and at this time, the terminal still needs to perform RRM (as shown by arrow 702 in fig. 7), and meanwhile, the SRS resource cannot be used. In order to use the SRS resource, the terminal may initiate an access request SRS update to the camping cell or request to continue using the SRS configuration.

Optionally, when the terminal may release (release) the connection from any cell of C6 to C9, the terminal device obtains configuration information from any cell of C6 to C9, where the configuration information includes the configuration of the TRS2 and the configuration of the SRS2 corresponding to the TRS2.

As the terminal moves further, when the terminal moves into the range of the service provided by C6-C9, the terminal device may receive TRS2 and skip RRM measurement (as shown by arrow 703 in fig. 7). In addition, the terminal may also transmit an SRS corresponding to TRS2 (as indicated by arrow 705 in fig. 7).

It can be known from the above that, when the RSRP of the TRS1 is lower than the first threshold, the terminal starts to perform the RRM measurement, so that when the RSRP of the TRS1 drops to be lower than the second threshold, the terminal already accumulates a part of the measurements and determines a suitable cell camping, so that the access request can be quickly initiated to the network side.

Optionally, if the first RSRP threshold is equal to the second RSRP threshold, when the terminal starts RRM measurement, the SRS may not be used, and since it takes time for the RRM measurement to determine a suitable cell to camp, the terminal cannot send the SRS during this time, which may affect sending of the SRS to a certain extent, and further affect positioning performance.

Optionally, if the first RSRP threshold is smaller than the second RSRP threshold, when the SRS of the terminal is not usable, the terminal does not need to start RRM measurement for cell reselection, and at this time, the terminal may determine whether to ignore the first RSRP for RRM/cell reselection, that is, the first RSRP threshold is not applicable.

Optionally, in the first implementation manner, the terminal transmits an SRS (including SRS1 or SRS 2), follows downlink timing acquired by the TRS (including TRS1 or TRS 2), and determines SRS transmission power based on the configured path loss reference signal, and a Timing Advance (TA) configured/updated by the serving cell.

According to the first implementation mode, the terminal starts RRM and judges whether SRS is available or not based on the RSRP of the TRS, so that unnecessary RRM measurement can be reduced, and the power consumption of the terminal is reduced. Meanwhile, when the RSRP of the TRS is lower than a certain value, RRM measurement is started, and the terminal can be ensured to be rapidly accessed into the cell when the SRS is unavailable.

In a second implementation manner, the number of the downlink reference signal sets included in the at least one downlink reference signal set is n, where n is an integer greater than 1.

It should be understood that, as described in the foregoing step S101, the number of the at least one downlink reference signal set configured by the first configuration information may be n. At this time, the first configuration information may be configuration information corresponding to n independent CSI-RS resources, may also be configuration information corresponding to n CSI-RS resource sets configured as TRSs (for example, each CSI-RS resource set configured as a TRS may include 2 CSI-RS resources in the same time slot, or may include 4 CSI-RS resources in two adjacent time slots), or may also be configuration information corresponding to n CSI resource configurations including one or more CSI-RS resource sets configured as TRSs (for example, each CSI resource configuration including one or more CSI-RS resource sets configured as TRSs corresponds to the implementation described by the CSI-ResourceConfig IE in the 38.331 standard document).

Optionally, in this embodiment of the application, the measurement result corresponding to a certain downlink reference signal set (a main reference signal set or a certain auxiliary reference signal set or another reference signal set) may have multiple implementation manners. For example, when the number of downlink reference signals included in the downlink reference signal set is 1, the measurement result corresponding to the downlink reference signal set is the measurement result of the 1 downlink reference signal. For another example, when the number of downlink reference signals included in the downlink reference signal set is multiple, the measurement result corresponding to the downlink reference signal set is a maximum value (or an average value, or an average value of partial measurement results higher than a certain threshold value, or the like) of multiple measurement results corresponding to multiple downlink reference signals.

Specifically, at least one downlink reference signal set is used for one or more cells, and when the terminal device resides in the one or more cells, the terminal device may implement time-frequency synchronization based on the one or more downlink reference signal sets included in the at least one downlink reference signal set.

In addition, the at least one downlink reference signal set comprises a main reference signal set and an auxiliary reference signal set, wherein the number of reference signals contained in the auxiliary reference signal set is n-1; the step S103 of the terminal device performing measurement based on the at least one downlink reference signal set, and the process of obtaining the first measurement value may specifically include: the terminal equipment measures the main reference signal set to obtain a second measured value; the terminal device determines the first measurement value based on the second measurement value.

Optionally, the number of reference signals included in the main reference signal set is 1 or p (p is an integer greater than 1).

Specifically, when the at least one downlink reference signal set includes n downlink reference signal sets, the n downlink reference signal sets include one primary reference signal set and one or more secondary reference signal sets. In step S103, during the process of measuring the n downlink reference signal sets, the terminal device may preferentially measure the main reference signal set to obtain a second measurement value, and then determine the first measurement value based on the second measurement value.

In some designs, the primary reference signal set applies at least to a serving cell of the terminal device when the terminal device was last in a connected state prior to a time at which the terminal device received the at least one downlink reference signal set based on the first configuration information; optionally, the primary reference signal set is also applied to neighboring cells of the serving cell, or the primary reference signal set is also applied to cooperating cells of the serving cell.

Optionally, in step S103, the determining, by the terminal device, the first measurement value based on the second measurement value includes: when the second measurement value is larger than a third threshold value, the terminal equipment determines the second measurement value as the first measurement value; the terminal device determines to skip the measurement of the secondary reference signal set. Specifically, in the process of measuring n downlink reference signal sets, the terminal device may preferentially measure the primary reference signal set, and when a second measurement value corresponding to the primary reference signal set is greater than a third threshold, the terminal device determines the second measurement value corresponding to the primary reference signal set as the first measurement value. In other words, when the second measurement value corresponding to the primary reference signal set is greater than the third threshold, the terminal device determines that the camping cell of the terminal device is located in one or more cells corresponding to the primary reference signal set. After that, the terminal device does not need to measure the measurements of other reference signals (i.e. secondary reference signal sets) in the n downlink reference signal sets except for the primary reference signal set, so that the power consumption of the terminal device can be further saved.

As a possible implementation manner, in the foregoing implementation process, the process that the terminal device determines the first measurement value based on the second measurement value specifically includes: when the second measurement value is smaller than a third threshold value, the terminal device measures the auxiliary reference signal set to obtain a third measurement value, wherein the number of the measurement values included in the third measurement value is p, and p is an integer which is greater than 0 and less than or equal to n-1; the terminal device determines the first measurement value based on the second measurement value and the third measurement value.

Specifically, in the process of measuring n downlink reference signal sets, the terminal device may preferentially measure the primary reference signal set, and when a second measurement value corresponding to the primary reference signal set is smaller than a third threshold, the terminal device determines the first measurement value based on the second measurement value and a third measurement value corresponding to the (at least one) secondary reference signal set. Such that the terminal device may determine the first measurement value based on a third measurement value corresponding to the secondary reference signal set in a case where the second measurement value corresponding to the primary reference signal set is smaller than a third threshold value, and in a case where the third measurement value is larger, it is possible to cause the terminal device to skip the RRM measurement, thereby reducing the power consumption of the terminal device.

Further, there may be various implementations of the procedure for the terminal device to determine the first measurement value based on the second measurement value and the third measurement value, as will be described in detail below,

for example, the process of the terminal device determining the first measurement value based on the second measurement value and the third measurement value includes: the terminal equipment determines the measured value which is larger than a third threshold value in the third measured values as a first measured value; and the terminal equipment updates the secondary reference signal set corresponding to the measurement value which is greater than the third threshold value in the third measurement value into the primary reference signal set.

Specifically, in the process of measuring the n downlink reference signal sets, the terminal device may preferentially measure the primary reference signal set, and when a second measurement value corresponding to the primary reference signal set is smaller than a third threshold, the terminal device determines, as the first measurement value, a third measurement value corresponding to an auxiliary reference signal set corresponding to a measurement value larger than the third threshold in the auxiliary reference signal set. In other words, when the first measurement value of the primary reference signal set is smaller than the third threshold and one of the reference signals in the secondary reference signal set is greater than the third threshold, the terminal device determines that the camping cell of the terminal device is located in one or more cells corresponding to the secondary reference signal set. Thereafter, the terminal device updates the first reference signal to the main reference signal set so as to perform a low-power-consumption positioning implementation process based on the updated main reference signal set.

Optionally, before step S103, the method further includes that the terminal device receives a third threshold sent from the network device. The third threshold may be carried in the same message as the first configuration information sent by the network device in step S101. Alternatively, the third threshold may be carried in a different message from the first configuration information sent by the network device in step S101, which is not limited herein.

Optionally, the third threshold is pre-configured in the terminal device.

As another example, the process of the terminal device determining the first measurement value based on the second measurement value and the third measurement value includes:

Optionally, the fourth threshold is smaller than the third threshold.

Optionally, the fourth threshold is greater than the third threshold.

Optionally, the fourth threshold is equal to the third threshold.

Optionally, before step S103, the method further includes that the terminal device receives a fourth threshold sent from the network device. The fourth threshold may be carried in the same message as the first configuration information sent by the network device in step S101. Alternatively, the fourth threshold may be carried in a different message from the first configuration information sent by the network device in step S101, which is not limited herein.

Optionally, the fourth threshold is pre-configured in the terminal device.

Further, the above-described manner can be expressed as:

the at least one downlink reference signal set corresponds to n first measurement values, and the first measurement value is the maximum value of the n first measurement values; or the like, or a combination thereof,

part of reference signals in the at least one downlink reference signal set correspond to m first measurement values, the m first measurement values are all larger than a third threshold value, the first measurement value is an average value of the m first measurement values, and m is an integer smaller than n; or the like, or, alternatively,

Specifically, in the process of measuring n downlink reference signal sets, the terminal device may determine the first measurement value in step S103 in the foregoing multiple ways, so as to improve the flexibility of implementation of the scheme.

In one possible implementation, the third threshold is greater than the first threshold. In particular, the third threshold may be greater than the first threshold, so that the terminal device may perform the measurement of the at least one downlink reference signal set as much as possible to obtain time-frequency synchronization without performing the RRM measurement.

Optionally, the third threshold is less than or equal to the first threshold.

Optionally, the third threshold is greater than the second threshold. The second threshold may be greater than the third threshold, so that the terminal device performs measurement of at least one downlink reference signal set as much as possible to transmit the SRS without performing a process of requesting the network device to update the SRS configuration information.

The second implementation will be described in detail below with reference to the implementation examples shown in fig. 4 and 5. For convenience of description, in the following example, at least one downlink reference signal set includes 2 TRSs as downlink reference signals, and the first measurement value is RSRP (accordingly, the first threshold is a first RSPR threshold, and the second threshold is a second RSPR threshold).

In the second implementation manner, after receiving the first configuration information in step S101, the terminal device may enter a low power consumption standby mode (e.g., INACTIVE state or IDLE state). After that, in the low power consumption standby mode, corresponding to the deep sleep (deep sleep) state shown in fig. 4 (the height of the histogram shown in fig. 4 indicates how much power consumption is, that is, the higher the height is, the higher the power consumption is, the lower the height is), the terminal device wakes up in advance by providing coarse timing by the very low power consumption internal clock at the time when the periodic SRS is about to be transmitted. After the power consumption ramp up (ramp up) time, the terminal device completes power-on and software and program loading, and starts the radio frequency channel to receive the TRS in step S102 to complete time frequency synchronization.

In addition to synchronization itself, the terminal device may obtain RSRP by measuring TRS in step S103, and is used to determine whether to skip RRM reference and whether SRS corresponding to TRS is available in step S104 and step S105. The method specifically comprises the following steps:

the terminal measures the RSRP of the main TRS, and when the RSRP of the main TRS is higher than a third RSRP threshold value, the terminal does not need to measure other TRSs; when the RSRP of the master TRS is lower than the third RSRP threshold, the terminal needs to measure other TRSs. Optionally, when the terminal detects that the RSRP of one non-main TRS is higher than the third RSRP threshold, the terminal updates the TRS to the main TRS, that is, it is no longer necessary to measure other TRSs. The present invention does not limit how the terminal measures other TRSs. The terminal preferentially measures the first N sets of the multiple sets of TRS terminals according to the configuration sequence of the multiple sets of TRS, wherein N is the maximum TRS set number supported by the terminal; or the terminal preferentially measures the current set M +1 according to the sequence of multiple sets of TRS configuration when the RSRP determined by the previous set M is lower than the third RSRP threshold value.

The RSRP of the TRS in the following is the maximum value of RSRPs of all TRSs measured by the terminal or the average value of all RSRPs above a certain RSRP preset value. For example, when the terminal only measures the main TRS, the maximum RSRP of the TRS is the RSRP of the main TRS; when the terminal measures the main TRS and several other TRSs, the RSRP of the TRS is the maximum value of RSRPs of the main TRS and the other TRSs or the average value of RSRPs higher than a certain RSRP threshold.

If the RSRP of the TRS is higher than the second RSRP threshold, the terminal may continue to use the SRS configuration associated with any one TRS among the TRSs corresponding to the average RSRP, and used for determining the TRS with the highest RSRP among the TRSs corresponding to the RSRP of the TRS.

If the RSRP of the TRS is lower than the second RSRP threshold, the terminal cannot continue to use any SRS configuration to transmit the SRS, and if the terminal still needs to transmit the SRS, the terminal may initiate access to the camping cell to request updating of the SRS or request use of the SRS configuration to transmit the SRS.

For another example, if the RSRP is the RSRP of layer 3, the RSRP is obtained by filtering the physical layer measurement reports of multiple times through layer 3. Illustratively, the filtering method satisfies the following manner:

F _n ＝(1-α)F _n-1 +αM _n ；

wherein, F _n For the nth filtered output, corresponding to F _n-1 For the n-1 th filtered output, M _n And reporting the RSRP value to the layer 3 for the physical layer before the nth filtering. In addition, F ₀ ＝M ₁ Ensuring that the first filtering output is equal to the physical layer reported value.

Generally, the first RSRP threshold is higher than the second RSRP threshold, so that the terminal device behaves as if RSRP is higher than the first RSRP threshold, and does not perform RRM, but uses SRS; performing RRM between the first RSRP and the second RSRP threshold value, and using SRS; and when the RSRP is lower than the second RSRP threshold, RRM is performed, the SRS cannot be used, and the access network is required to request to update the SRS or request to transmit the SRS by using SRS configuration.

In the above process, the terminal device needs to wake up (i.e. ramp up) each time to complete time-frequency synchronization because the internal clock of the terminal device has poor stability and drift. Meanwhile, because the TRS location is more flexible than the SSB location, it may be configured in the time slot where the SRS is located (or one or two time slots before the time slot where the SRS is located), as shown in fig. 5, the time slot where the time domain location where the SRS is transmitted is time slot 3, and the time domain location where the TRS is received may be located in at least one of time slot 1, time slot 2, and time slot 3. Thus, as shown in fig. 4, the total duration of the synchronization by the TRS and the SRS transmission by the terminal device can be short, for example, less than 1ms, which can reduce the power consumption of the terminal device.

A specific example of the second implementation is described in fig. 6 and 8.

In the scenario shown in fig. 6, there are 9 cells, denoted as C1-C9. Of these, C1-C6 transmission TRS1, C5-C9 transmission TRS2 (TRS 1 is different from TRS 2), note that C5, C6 are located at the boundary at this time, and the TRS1 and TRS2 are transmitted at the same time. The transmission mode of the TRS1 may be SFN, i.e., the C1-C6 use the same time-frequency resource to transmit the same TRS1. The transmission mode of the TRS2 is SFN, i.e. the C5-C9 use the same time-frequency resource to transmit the same TRS2.

The direction of movement of the terminal is depicted by the dashed line in fig. 6. When the terminal releases (releases) the connection from the network, the configuration of the TRS1 and the SRS1 and the configuration of the TRS2 and the SRS2 may be received from the C1 cell. That is, the terminal receives the configurations of TRS1 and TRS2 and the configurations of SRS1 and SRS2, where TRS1 is associated with SRS1 and TRS2 is associated with SRS 2. Wherein the TRS1 is a main TRS.

Initially, the terminal is located under the enclosure of C1-C6 to receive TRS1 (as shown by arrow 801 in fig. 8), RSRP of TRS1 is high and higher than the first threshold and the third threshold, the terminal does not need to do RRM and measure TRS2, and SRS1 configuration can be used (as shown by arrow 802 in fig. 8).

Thereafter, as the terminal moves, the terminal moves out of the enclosure of C1-C5, the RSRP of TRS1 gradually decreases, and when the RSRP is lower than the third RSRP threshold (but higher than the first and second RSRP thresholds), the terminal needs to start to measure TRS1 and TRS2 (as shown by arrow 802 in fig. 8), and at this time, the RSRP of TRS (based on TRS1 or TRS2 or an average of both) is higher than the first and second thresholds, the terminal does not need to do RRM, and at the same time, the configuration of SRS1 can be used (as shown by arrow 804 in fig. 8). When the RSRP of TRS1 is higher than the RSRP of TRS2, the terminal may use SRS1 (as illustrated by arrow 804 in fig. 8); SRS2 may be used instead (as shown by arrow 805 in fig. 8).

Then, as the terminal moves, RSRP of TRS2 of the terminal is higher than the third RSRP threshold (and simultaneously higher than the first and second RSRP thresholds), at which point the terminal may continue to simultaneously measure TRS1+ TRS2 (as shown by arrow 802 in fig. 8), or set TRS2 as the main TRS and no longer measure TRS1 (as shown by arrow 803 in fig. 8). The terminal uses SRS2 (as indicated by arrow 805 in fig. 8) and does not need RRM.

In the above procedure, the third RSRP threshold is generally required to be higher than the first RSRP threshold and higher than the second RSRP threshold, so that the terminal tries to perform the measurement (and synchronization) of the TRS without entering the RRM.

Optionally, if the third RSRP threshold is equal to the first RSRP threshold, the terminal needs to start measurement of other TRSs and RRM measurement at the same time, and power consumption of the terminal increases.

Optionally, if the third RSRP threshold is lower than the first RSRP threshold, the terminal needs to start RRM before measuring other TRSs, and at this time, the terminal may determine whether to ignore the third RSRP threshold to perform measurement of other TRSs, that is, the third RSRP threshold is not applicable.

In addition, under multiple sets of TRS configurations, when RSRP of a TRS (obtained based on RSRP calculation of multiple measured TRSs) is lower than a first threshold, the terminal starts RRM, so that the terminal already accumulates a part of measurements and determines a suitable cell camping when RSRP of TRS1/2 falls below a second threshold, which can quickly initiate an access request to the network side.

Optionally, in the second implementation manner, the terminal transmits an SRS (including SRS1 or SRS 2), follows downlink timing acquired by the TRS (including TRS1 or TRS 2), and determines SRS transmission power based on the configured path loss reference signal, and a Timing Advance (TA) configured/updated by the serving cell.

In the second implementation manner, the terminal uses multiple sets of TRSs, where one set is a main TRS, to avoid frequent RRM activation and perform TRS-based measurement as much as possible. In the multiple sets of TRS configurations, the terminal can preferentially execute the measurement of the main TRS only, and the measurement overhead is reduced. In addition, the terminal starts RRM based on RSRP of the TRS and judges whether SRS is available or not, so that unnecessary RRM measurement can be reduced, and power consumption of the terminal is reduced. Meanwhile, when the RSRP of the TRS is lower than a certain value, RRM measurement is started, and the terminal can be ensured to be rapidly accessed into the cell when the SRS is not available.

Referring to fig. 9, a schematic diagram of a communication device provided in the present application is shown, where the communication device 900 includes a processing unit 901 and a transceiver unit 902.

In one possible implementation form of the method,

the transceiver unit 902 is configured to receive first configuration information from a network device, where the first configuration information is used to configure at least one downlink reference signal set;

the transceiver unit 902 is further configured to receive the at least one downlink reference signal set based on the first configuration information;

the processing unit 901 is configured to perform measurement based on the at least one downlink reference signal set to obtain a first measurement value;

the processing unit 901 is further configured to determine to skip the RRM measurement when the first measurement value is greater than the first threshold.

In another possible implementation form of the method,

the transceiving unit 902 is configured to receive first configuration information from a network device, where the first configuration information is used to configure a first downlink reference signal set;

the processing unit 901 is configured to receive the at least one downlink reference signal set based on the first configuration information; the terminal equipment measures based on the at least one downlink reference signal set to obtain a first measured value;

the processing unit 901 is configured to determine whether an SRS corresponding to at least one downlink reference signal set is valid based on the first measurement value.

In one possible implementation, the at least one downlink reference signal set includes 1 downlink reference signal set. In other words, the number of downlink references included in at least one downlink reference signal set is 1.

In one possible implementation form of the method,

the transceiving unit 902 is further configured to receive second configuration information of the sounding reference signal from the network device, where the second configuration information is used to configure the first SRS; the first SRS is associated with the at least one downlink reference signal set;

when the first measurement value is greater than the second threshold, the transceiving unit 902 is further configured to transmit the first SRS based on the second configuration information.

In one possible implementation form of the method,

the processing unit 901 is further configured to suspend sending the first SRS when the first measurement value is smaller than the second threshold value.

In one possible implementation manner, the at least one downlink reference signal set includes n downlink reference signal sets, where n is an integer greater than 1. In other words, the at least one downlink reference signal set includes a plurality of downlink references (i.e., n downlink references).

In a possible implementation manner, the transceiving unit 902 is further configured to receive third configuration information from the network device, where the third configuration information is used to configure q SRSs associated with n downlink reference signal sets, where q is less than or equal to n; when the first measurement value is greater than the second threshold, the transceiving unit 902 is further configured to transmit a target SRS based on the third configuration information, where the target SRS is one of the q SRSs associated with a downlink reference signal set corresponding to the first measurement value in the n downlink reference signal sets.

In one possible implementation, the processing unit 901 is further configured to: and when the first measurement value is smaller than the second threshold value, the terminal equipment stops sending the target SRS.

In a possible implementation manner, the number q of SRSs configured by the third configuration information may include multiple implementation manners, including:

q is 1; or the like, or, alternatively,

In one possible implementation, the second threshold is less than the first threshold.

In one possible implementation form of the method,

the processing unit 901 is further configured to perform the RRM measurement when the first measurement value is smaller than the first threshold.

In one possible implementation form of the method,

the first configuration information is carried in system information; or the like, or, alternatively,

the first configuration information is carried in an rrc release message.

In one possible implementation of the method according to the invention,

In a possible implementation manner, the number of downlink reference signal sets included in the at least one downlink reference signal set is 1.

In a possible implementation manner, the number of the downlink reference signal sets included in the at least one downlink reference signal set is n, where n is an integer greater than 1.

In a possible implementation manner, the at least one downlink reference signal set includes a main reference signal set and a secondary reference signal set, where the number of reference signals included in the secondary reference signal set is n-1;

the processing unit 901 is configured to perform measurement based on the at least one downlink reference signal set, and obtaining a first measurement value includes:

the processing unit 901 is configured to measure the main reference signal set to obtain a second measurement value;

the processing unit 901 is configured to determine the first measurement value based on the second measurement value.

In a possible implementation, the processing unit 901 is configured to determine the first measurement value based on the second measurement value by:

when the second measurement value is greater than a third threshold, the processing unit 901 is configured to determine the second measurement value as the first measurement value;

the processing unit 901 is configured to determine to skip the measurement of the secondary reference signal set.

when the second measurement value is smaller than a third threshold, the processing unit 901 is configured to measure the secondary reference signal set to obtain a third measurement value, where the number of measurement values included in the third measurement value is p, and p is an integer greater than 0 and less than or equal to n-1;

the processing unit 901 is configured to determine the first measurement value based on the second measurement value and the third measurement value.

In one possible implementation, the processing unit being configured to determine the first measurement value based on the second measurement value and the third measurement value comprises:

the processing unit 901 is configured to determine a measurement value greater than the third threshold value from the third measurement values as the first measurement value;

the processing unit 901 is configured to update the secondary reference signal set corresponding to the measurement value greater than the third threshold in the third measurement value as the primary reference signal set.

In a possible implementation, the processing unit is configured to determine the first measurement value based on the second measurement value and the third measurement value, and includes:

the processing unit 901 is configured to determine that the first measurement value is the maximum value of the second measurement value and the third measurement value; or the like, or, alternatively,

the processing unit 901 is configured to determine that the first measurement value is an average of the second measurement value and the third measurement value; or the like, or, alternatively,

the processing unit 901 is configured to determine that the first measurement value is an average value of m measurement values of the second measurement value and the third measurement value, where m measurement values are all greater than a fourth threshold value, and m is an integer smaller than n; or

The processing unit 901 is configured to determine that the first measurement value is a maximum value of k measurement values of the second measurement value and the third measurement value, where k is an integer smaller than n.

In one possible implementation form of the method,

the at least one downlink reference signal set corresponds to n measurement values, and the first measurement value is the maximum value of the n measurement values; or the like, or, alternatively,

In one possible implementation, the third threshold is greater than the first threshold.

In one possible implementation form of the method,

the first measurement value comprises at least one of a reference signal received power, RSRP, and a reference signal received quality, RSRQ.

Optionally, the first measurement value is RSRP.

In one possible implementation, the processing unit to determine to skip the RRM measurement includes:

In one possible implementation form of the method,

the first information is also used to indicate that the terminal device is allowed to determine whether to perform inter-frequency, inter-RAT measurements not based on the priority of the inter-frequency or inter-radio access technology, RAT, and the SSB measurement result of the serving cell.

In one possible implementation form of the method,

the RRM measurement comprises at least one of intra-frequency cell measurement, inter-frequency cell measurement and inter-RAT measurement.

In one possible implementation, the first configuration information includes at least one of:

CSI-RS resource configuration information; or the like, or, alternatively,

In a possible implementation manner, the first configuration information includes at least one piece of configuration information, and the at least one piece of configuration information corresponds to the at least one downlink reference signal set one to one;

CSI-RS resource configuration information; or the like, or, alternatively,

It should be noted that the communication apparatus 900 may also be configured to execute an implementation process corresponding to any one of the foregoing method embodiments, and implement corresponding beneficial effects, which specifically refers to the description in the foregoing embodiments, and is not described herein again.

Referring to fig. 10, a communication device according to the foregoing embodiments is provided for an embodiment of the present application, where the communication device may specifically be a terminal device in the foregoing embodiments, where a schematic diagram of a possible logic structure of the communication device 1000 is provided, and the communication device 1000 may include, but is not limited to, at least one processor 1001 and a communication port 1002. Further optionally, the apparatus may further include at least one of a memory 1003 and a bus 1004, and in this embodiment, the at least one processor 1001 is configured to control an action of the communication apparatus 1000.

Further, the processor 1001 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors in combination, a digital signal processor in combination with a microprocessor, and so forth. It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

It should be noted that the communication apparatus shown in fig. 10 may be specifically configured to implement other steps implemented by the terminal device in the foregoing corresponding method embodiment, and implement a technical effect corresponding to the terminal device, and the specific implementation manner of the communication apparatus shown in fig. 10 may refer to descriptions in the foregoing method embodiments, and is not described in detail here.

The embodiment of the present application further provides a computer-readable storage medium storing one or more computer-executable instructions, where when the computer-executable instructions are executed by a processor, the processor executes the method according to the implementation manner corresponding to the terminal device in the foregoing embodiment.

Embodiments of the present application further provide a computer-readable storage medium storing one or more computer-executable instructions, where when the computer-executable instructions are executed by a processor, the processor executes the method according to the implementation manner corresponding to the network device in the foregoing embodiments.

The embodiment of the present application further provides a computer program product (or called computer program) storing one or more computers, and when the computer program product is executed by the processor, the processor executes the method described in the implementation manner corresponding to the terminal device.

The embodiment of the present application further provides a computer program product storing one or more computers, and when the computer program product is executed by the processor, the processor executes the method described in the implementation manner corresponding to the network device.

The embodiment of the present application further provides a chip system, where the chip system includes at least one processor, and is configured to support a terminal device to implement the functions related to the implementation manner corresponding to the terminal device. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor. In one possible design, the system-on-chip may further include a memory for storing necessary program instructions and data for the terminal device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

The embodiment of the present application further provides a chip system, where the chip system includes at least one processor, and is configured to support a network device to implement the functions related to the implementation manner corresponding to the network device. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor. In one possible design, the system-on-chip may further include a memory, storage, for storing necessary program instructions and data for the network device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

The embodiment of the present application further provides a communication system, and the network system architecture includes the terminal device and the network device in any of the above embodiments.

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 manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or 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 to 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, or a network device) 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: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

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

Claims

1. A method of communication, comprising:

the method comprises the steps that terminal equipment receives first configuration information from network equipment, wherein the first configuration information is used for configuring at least one downlink reference signal set;

the terminal equipment receives the at least one downlink reference signal set based on the first configuration information;

the terminal equipment measures based on the at least one downlink reference signal set to obtain a first measured value;

the terminal device determines to skip radio resource management, RRM, measurements when the first measurement value is greater than a first threshold.

2. The method of claim 1, wherein the at least one downlink reference signal set comprises 1 downlink reference signal set.

3. The method of claim 2, further comprising:

the terminal device receives second configuration information from the network device, wherein the second configuration information is used for configuring a first Sounding Reference Signal (SRS) associated with the at least one downlink reference signal set;

and when the first measurement value is larger than a second threshold value, the terminal equipment transmits the first SRS based on the second configuration information.

4. The method of claim 3, further comprising:

and when the first measurement value is smaller than the second threshold value, the terminal equipment stops transmitting the first SRS.

5. The method of claim 1, wherein the at least one downlink reference signal set comprises n downlink reference signal sets, and wherein n is an integer greater than 1.

6. The method of claim 5, further comprising:

the terminal device receives third configuration information from the network device, where the third configuration information is used to configure q SRSs associated with the n downlink reference signal sets, and q is less than or equal to n;

and when the first measurement value is greater than a second threshold value, the terminal device transmits a target SRS based on the third configuration information, wherein the target SRS is the SRS associated with the downlink reference signal set corresponding to the first measurement value in the n downlink reference signal sets in the q SRS.

7. The method of claim 6,

q is 1; or the like, or, alternatively,

the q is equal to the n, wherein the q SRS correspond to the n downlink reference signal sets one to one; or the like, or, alternatively,

the q is greater than 1 and less than the n, wherein each SRS included in the q SRS corresponds to one or more downlink reference signal sets in the n downlink reference signal sets.

8. The method according to claim 6 or 7, characterized in that the method further comprises:

and when the first measurement value is smaller than the second threshold value, the terminal equipment stops transmitting the target SRS.

9. The method according to any one of claims 5 to 8, wherein the at least one downlink reference signal set comprises a primary reference signal set and a secondary reference signal set, wherein the number of reference signal sets included in the secondary reference signal set is n-1;

the terminal device measures based on the at least one downlink reference signal set, and obtaining a first measurement value includes:

the terminal equipment measures the main reference signal set to obtain a second measured value;

the terminal device determines the first measurement value based on the second measurement value.

10. The method of claim 9, wherein the terminal device determining the first measurement value based on the second measurement value comprises:

when the second measurement value is larger than a third threshold value, the terminal equipment determines the second measurement value as the first measurement value;

the terminal device determines to skip measurement of the secondary reference signal set.

11. The method of claim 9 or 10, the terminal device determining the first measurement value based on the second measurement value comprising:

when the second measurement value is smaller than a third threshold value, the terminal device measures the auxiliary reference signal set to obtain a third measurement value, wherein the number of the measurement values included in the third measurement value is p, and p is an integer which is greater than 0 and less than or equal to n-1;

the terminal device determines the first measurement value based on the second measurement value and the third measurement value.

12. The method of claim 11, wherein the terminal device determines the first measurement value based on the second measurement value and the third measurement value, comprising:

the terminal device determines the measurement value larger than the third threshold value in the third measurement values as the first measurement value;

and the terminal equipment updates the auxiliary reference signal set corresponding to the measurement value which is greater than the third threshold value in the third measurement value into the main reference signal set.

13. The method according to claim 11 or 12, the terminal device determining the first measurement value based on the second measurement value and the third measurement value, comprising:

the terminal device determines that the first measurement value is the maximum value of the second measurement value and the third measurement value; or the like, or, alternatively,

14. The method according to any one of claims 5 to 13,

the at least one downlink reference signal set corresponds to n measurement values, and the first measurement value is an average value of the n measurement values; or the like, or a combination thereof,

and a part of reference signals in the at least one downlink reference signal set correspond to k measurement values, and the first measurement value is a maximum value of the k measurement values, where k is an integer smaller than n.

15. The method according to any one of claims 1 to 14, further comprising:

the terminal device performs the RRM measurement when the first measurement value is less than the first threshold value.

16. The method according to any one of claims 1 to 15,

the first configuration information is carried in a radio resource control release RRCRelease message.

17. The method according to any one of claims 1 to 16,

and the downlink reference signal contained in the downlink reference signal set is a tracking reference signal TRS.

18. The method of any of claims 10 to 17, wherein the third threshold is greater than the first threshold.

19. The method according to any one of claims 1 to 18,

20. The method according to any one of claims 1 to 19, wherein the determining, by the terminal device, to skip the RRM measurement comprises:

the terminal device determines to skip the RRM measurement based on first information indicating that the terminal device is allowed to perform determination whether to perform intra-frequency cell measurement not based on a measurement result of a synchronization signal block SSB of a serving cell.

21. The method of claim 20,

the first information is further used for indicating that the terminal device is allowed to determine whether to perform inter-frequency, inter-RAT measurements not based on the priority of the inter-frequency or inter-radio access technology, RAT, and the measurement result of the SSB of the serving cell.

22. The method according to any one of claims 1 to 21,

23. The method according to any of claims 1 to 22, wherein the first configuration information comprises at least one of:

CSI-RS resource configuration information; or the like, or, alternatively,

CSI resource configuration information for one or more CSI-RS resource sets configured as TRSs is configured.

24. A communication apparatus, comprising a transceiving unit and a processing unit;

the transceiver unit and the processing unit are configured to perform the method of any of claims 1 to 23.

25. A communications apparatus, comprising:

a processor and a memory;

the memory is to store program instructions;

the processor is configured to execute the program instructions to cause the communication device to implement the method of any of claims 1-23.

26. A computer program product comprising instructions for causing a computer to perform the method of any one of claims 1 to 23 when the computer program product is run on the computer.

27. A computer readable storage medium for storing program instructions, which when run on a computer, cause the computer to perform the method of any one of claims 1 to 23.