CN111885683B

CN111885683B - Communication method and device

Info

Publication number: CN111885683B
Application number: CN201910376867.XA
Authority: CN
Inventors: 黄雯雯; 铁晓磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-05-03
Filing date: 2019-05-03
Publication date: 2024-04-26
Anticipated expiration: 2039-05-03
Also published as: CN111885683A

Abstract

The application discloses a communication method and a communication device. The terminal equipment receives configuration information of SRS resource sets from network equipment; receiving DCI from the network device, wherein the DCI is used to indicate the SRS resource set; and receiving a channel state information reference signal (CSI-RS) sent by the network equipment on a CSI-RS resource associated with the SRS resource set, wherein a time slot offset value between the CSI-RS resource and the DCI is greater than 0. By adopting the scheme of the application, when non-codebook transmission is carried out, the time slot offset value between the CSI-RS resource and the DCI indicating the SRS resource set is larger than zero, so that the terminal equipment does not need to receive and buffer the CSI-RS while detecting the DCI, thereby saving the power consumption of the terminal equipment.

Description

Communication method and device

Technical Field

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

Background

Improving the mechanism by which the base station schedules data and triggers the aperiodic reference signal can reduce the power consumption of the terminal device.

The base station needs to make measurements using Sounding REFERENCE SIGNAL (SRS), and the base station configures one or more aperiodic SRS resource sets. The base station triggers the aperiodic SRS through a physical downlink control channel (physical downlink control channel, PDCCH). Specifically, the sounding reference signal request field (SRS request field) in the downlink control information (downlink control information, DCI) triggers one of the SRS resource sets. The SRS resource set is associated with one CSI-RS resource. During non-codebook transmission, the base station also configures parameters such as a slot offset (slotoffset) between the SRS resource set and DCI triggering the SRS resource set, and a channel state information reference signal (CHANNEL STATE information-REFERENCE SIGNAL, CSI-RS) resource identifier associated with the SRS resource set. The terminal device may perform measurement calculation for precoding for SRS according to the associated CSI-RS. As shown in the slot diagram of triggering aperiodic SRS in the existing mechanism shown in fig. 1, the CSI-RS resource and DCI triggering the aperiodic SRS are in the same slot, so that the terminal device needs to buffer CSI-RS possibly existing in the same slot while detecting PDCCH, when the terminal device analyzes the content of the DCI, it can know specific information of the CSI-RS resource, including whether there is CSI-RS, the UE performs measurement and calculation precoding according to the CSI-RS and applies precoding to the DCI triggered SRS, and the terminal device sends SRS to the base station at slotoffset positions corresponding to the triggered SRS resource set. The terminal equipment needs a certain time for measurement according to the CSI-RS, and when the last symbol of the CSI-RS resource is met between the associated CSI-RS and the SRS and at least 42 symbols exist from the first symbol of the SRS, the terminal equipment updates the precoding of the SRS according to the measurement of the CSI-RS.

It can be seen that before the terminal device acquires the content of the DCI, the terminal device does not determine whether the base station triggers the aperiodic SRS, and the terminal device does not know the CSI-RS information or need to measure the CSI-RS, so that the terminal device needs to buffer the CSI-RS that may exist when detecting the PDCCH. In addition, the terminal device also needs to measure CSI-RS based on the control information of PDCCH, so the terminal device cannot relax the processing time of PDCCH. The terminal device cannot effectively save its own power consumption.

Therefore, how to send and receive signals to save power consumption of the terminal device when performing non-codebook transmission is a problem to be solved.

Disclosure of Invention

The application provides a communication method and a communication device, which can save the power consumption of terminal equipment when non-codebook transmission is carried out.

In a first aspect, a communication method is provided, the method comprising: receiving configuration information of a Sounding Reference Signal (SRS) resource set from network equipment; receiving Downlink Control Information (DCI) from the network equipment, wherein the DCI is used for indicating the SRS resource set; and receiving a channel state information reference signal (CSI-RS) sent by the network equipment on a CSI-RS resource associated with the SRS resource, wherein a time slot offset value between the CSI-RS resource and the DCI is greater than 0. In this aspect, when non-codebook transmission is performed, a slot offset value between CSI-RS resources and DCI indicating an SRS resource set is greater than zero, so that the terminal device does not need to receive and buffer CSI-RS while detecting DCI, thereby saving power consumption of the terminal device.

In one implementation, the method further comprises: measuring based on the CSI-RS to obtain precoding for the SRS; and sending the SRS. In this implementation, the measurement duration of the CSI-RS needs to satisfy a certain duration, and the terminal device updates the precoding of the SRS according to the measurement of the CSI-RS, that is, the precoding of the SRS is obtained based on the measurement of the CSI-RS.

In a second aspect, there is provided a communication method, the method comprising: transmitting configuration information of a Sounding Reference Signal (SRS) resource set to terminal equipment; transmitting Downlink Control Information (DCI) to the terminal equipment, wherein the DCI is used for indicating the SRS resource set; and transmitting a CSI-RS to the terminal device on a channel state information reference signal, CSI-RS, resource associated with the SRS resource set, wherein a slot offset value between the CSI-RS resource and the DCI is greater than 0. In this aspect, when performing non-codebook transmission, when the network device triggers SRS and transmits CSI-RS, a slot offset value between the CSI-RS resource and DCI indicating the SRS resource set is greater than zero, so that the terminal device does not need to receive and buffer the CSI-RS while detecting the DCI, thereby saving power consumption of the terminal device.

In one implementation, the method further comprises: and receiving SRS from the terminal equipment, wherein the precoding of the SRS is obtained based on the measurement of the CSI-RS. In this implementation, the measurement duration of the CSI-RS needs to satisfy a certain duration, and the terminal device updates the precoding of the SRS according to the measurement of the CSI-RS, that is, the precoding of the SRS is obtained based on the measurement of the CSI-RS.

With reference to the first aspect, the second aspect, or any implementation of the first aspect or the second aspect, in a further implementation, a slot offset value between the CSI-RS resource and the DCI is a first slot offset value; the first time slot offset value is a time slot offset value between the CSI-RS and the DCI configured by the network equipment, and the configuration information comprises the first time slot offset value; or the first time slot offset value is the minimum value in time slot offset values between a physical downlink shared channel PDSCH of the terminal equipment and a physical downlink control channel PDCCH for scheduling the PDSCH; or the first time slot offset value is the minimum value of time slot offset values between a Physical Uplink Shared Channel (PUSCH) of the terminal equipment and a PDCCH for scheduling the PUSCH. In this implementation, the first slot offset value may be a slot offset value flexibly configured by the network device, may be a minimum value of slot offset values between a predefined PDSCH and a PDCCH scheduling the PDSCH, or may be a minimum value of slot offset values between a predefined PUSCH and a PDCCH scheduling the PUSCH. The network device may include the first slot offset value when configuring the SRS resource set, that is, the configuration information configuring the SRS resource set and the configuration information configuring the first slot offset value are the same configuration information; in addition, the configuration information for configuring the SRS resource set and the configuration information for configuring the first slot offset value may not be the same configuration information.

With reference to the first aspect, the second aspect, or any implementation of the first aspect or the second aspect, in a further implementation, a slot offset value between the CSI-RS resource and the DCI is a smaller value of a first slot offset value and a second slot offset value; the first time slot offset value is a time slot offset value between the CSI-RS and the DCI configured by the network equipment, and the configuration information comprises the first time slot offset value; or the first time slot offset value is the minimum value in time slot offset values between a physical downlink shared channel PDSCH of the terminal equipment and a physical downlink control channel PDCCH for scheduling the PDSCH; or the first time slot offset value is the minimum value in time slot offset values between a Physical Uplink Shared Channel (PUSCH) of the terminal equipment and a physical uplink shared channel (PDCCH) for scheduling the PUSCH; the second slot offset value is a difference value between the slot offset value between the SRS resource set and the DCI and the measurement duration of the CSI-RS. In this implementation, the measurement duration of the CSI-RS may be obtained according to a slot offset value between the CSI-RS and the DCI, or may be obtained according to a slot offset value between the SRS resource set and the DCI, and in order to ensure the time required for CSI-RS measurement, the slot offset value between the CSI-RS resource and the DCI may take a smaller value of the first slot offset value and the second slot offset value.

With reference to the first aspect, the second aspect, or any implementation of the first aspect or the second aspect, in a further implementation, the configuration information includes a third slot offset value, where the third slot offset value is a slot offset value between an SRS resource set configured by the network device and DCI; wherein, the time slot offset value between the SRS resource set and the DCI is the third time slot offset value; or the time slot offset value between the SRS resource set and the DCI is larger than the third time slot offset value; or the time slot offset value between the SRS resource set and the DCI is the sum of the first time slot offset value and the third time slot offset value. In this implementation, slot offset values between SRS resource sets and DCI may be flexibly determined. The time slot offset value between the SRS resource set and the DCI may be a third time slot offset value configured by the network device, or may be greater than the third time slot offset value configured by the network device, or may be a sum of the first time slot offset value and the third time slot offset value. The determination of the slot offset value between the SRS resource set and the DCI requires that the time required for CSI-RS measurement is guaranteed as much as possible.

With reference to the first aspect, the second aspect, or any implementation of the first aspect or the second aspect, in a further implementation, the configuration information includes a third slot offset value, where the third slot offset value is a slot offset value between an SRS resource set configured by the network device and DCI; and the time slot offset value between the CSI-RS resource and the DCI is smaller than or equal to the difference value between the third time slot offset value and the measurement duration of the CSI-RS. In the implementation, according to the time slot offset value between the SRS resource set configured by the network equipment and the DCI and the difference value of the measurement duration of the CSI-RS, the time slot offset value between the CSI-RS resource and the DCI can be obtained. The time slot offset value between the CSI-RS resource and the DCI may be less than or equal to the difference between the third time slot offset value and the measurement duration of the CSI-RS, so as to ensure the time required for CSI-RS measurement as much as possible.

Accordingly, in a third aspect, a communication apparatus is provided, which may implement the communication method implemented in the first aspect or any one of the foregoing implementations. The communication means may be, for example, a chip (e.g. a baseband chip, or a communication chip, etc.) or a terminal device. The above method may be implemented by software, hardware, or by hardware executing corresponding software.

In one possible implementation, the communication device includes a processor and a memory in its structure; the processor is configured to support the apparatus to perform corresponding functions in the communication method described above. The memory is used to couple with the processor, which holds the necessary programs (instructions) and/or data for the device. Optionally, the communication device may further comprise a communication interface for supporting communication between the device and other network elements.

In another possible implementation manner, the communication device may include unit modules that perform corresponding functions or actions in the above-described method.

In yet another possible implementation, the system includes a processor and a transceiver, the processor being coupled to the transceiver, the processor being configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the processor is also adapted to implement the above-described method when the processor executes the computer program or instructions. The transceiver device may be a transceiver, a transceiver circuit, or an input-output interface, for example. When the communication device is a chip, the transceiver is a transceiver circuit or an input/output interface.

When the communication device is a chip, the transmitting unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit such as an input circuit or a communication interface. When the communication apparatus is a network device, the transmitting unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

Accordingly, in a fourth aspect, a communication apparatus is provided, which may implement the communication method of the second aspect or any implementation. The communication means may be, for example, a chip (e.g., a baseband chip, a communication chip, etc.) or a network device, and the above method may be implemented by software, hardware, or by hardware executing corresponding software.

In one possible implementation, the communication device includes a processor and a memory in its structure; the processor is configured to support the apparatus to perform corresponding functions in the communication method described above. The memory is used to couple with the processor, which holds the programs (instructions) and data necessary for the device. Optionally, the communication device may further comprise a communication interface for supporting communication between the device and other network elements.

In another possible implementation manner, the communication device may include a unit module that performs the corresponding actions in the above method.

When the communication device is a chip, the receiving unit may be an input unit, such as an input circuit or a communication interface; the transmitting unit may be an output unit such as an output circuit or a communication interface. When the communication apparatus is a terminal device, the receiving unit may be a receiver (may also be referred to as a receiver); the transmitting unit may be a transmitter (which may also be referred to as a transmitter).

It will be appreciated that in embodiments of the present application, the hardware portions of the communication device responsible for input and output may be integrated.

In a fifth aspect, there is provided a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of the above aspects.

In a sixth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In a seventh aspect, a communication system is provided, including any of the network device-side communication apparatuses described above, and/or any of the terminal-side communication apparatuses.

Drawings

The drawings that are required to be used in the embodiments of the present application or the background art will be described below.

Fig. 1 is a time slot diagram of a conventional triggered aperiodic SRS;

FIG. 2 is a schematic diagram of a communication system according to the present application;

fig. 3 is an interaction flow diagram of a communication method according to an embodiment of the present application;

Fig. 4 is a time slot diagram of triggering an aperiodic SRS according to an example of the present embodiment;

FIG. 5 is a schematic diagram of an interaction flow of another communication method according to an embodiment of the present application;

fig. 6 is a slot diagram of yet another example of triggering aperiodic SRS according to the present embodiment;

fig. 7 is a slot diagram of yet another example of triggering aperiodic SRS according to this embodiment;

fig. 8 is a slot diagram of yet another example of triggering aperiodic SRS according to the present embodiment;

Fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a simplified network device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

Fig. 2 presents a schematic view of a communication system to which the application relates. The communication system may include at least one network device 100 (only 1 is shown) and one or more terminal devices 200 connected to the network device 100.

The network device 100 may be a device capable of communicating with the terminal device 200. The network device 100 may be any device having a wireless transceiving function. Including but not limited to: base stations NodeB, evolved base stations eNodeB, base stations in the fifth generation (the fifth generation, 5G) communication system, base stations or network equipment in future communication systems, access nodes in WiFi systems, wireless relay nodes, wireless backhaul nodes, etc. The network device 100 may also be a wireless controller in the context of a cloud wireless access network (cloud radio access network, CRAN). The network device 100 may also be a small station, a transmission node (transmission reference point, TRP), or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the network equipment.

The terminal device 200 is a device with a wireless transceiving function, and can be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; the device can also be deployed on the water surface, such as a ship, etc.; but also can be deployed in the air, such as on an airplane, a balloon, a satellite, etc. The terminal device may be a mobile phone (mobile phone), a tablet (pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self-driving), a wireless terminal in telemedicine (remote media), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), etc. The embodiment of the application does not limit the application scene. A terminal device may also be referred to as a User Equipment (UE), an access terminal device, a UE unit, a mobile station, a remote terminal device, a mobile device, a terminal (terminal), a wireless communication device, a UE agent, a UE apparatus, or the like.

It should be noted that the terms "system" and "network" in embodiments of the present application may be used interchangeably. "plurality" means two or more, and "plurality" may also be understood as "at least two" in this embodiment of the present application. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone.

The embodiment of the application provides a communication method and a communication device, wherein when non-codebook transmission is carried out, a time slot offset value between a CSI-RS resource and DCI indicating an SRS resource set is larger than zero, so that terminal equipment does not need to receive and cache the CSI-RS while detecting the DCI, and the power consumption of the terminal equipment is saved.

The non-codebook transmission refers to that the terminal equipment transmits based on precoding.

Fig. 3 is an interactive flow chart of a communication method according to an embodiment of the present application, and the method may include the following steps:

s101, the network equipment sends configuration information of SRS resource sets to the terminal equipment.

Correspondingly, the terminal equipment receives the configuration information of the SRS resource set.

Specifically, the network device configures one or more SRS resource sets to the terminal device, each SRS resource set may include one or more SRS resources. The network device may also transmit configuration information of the above SRS resource set (SRS resource set) to the terminal device through radio resource control (radio resource control, RRC) signaling or the like. The configuration information of the SRS resource set comprises parameters such as identification of the SRS resource set (SRS-ResourceSetId), identification of the SRS resource (SRS-ResourceId), SRS resource type (resourceType) and the like. The SRS resource type may be aperiodic, periodic, or semi-persistent. If the SRS resource set is aperiodic, the configuration information of the SRS resource set also comprises parameters such as aperiodic sounding reference signal (aperiodicSRS-resource trigger), CSI-RS resource identification, time slot offset values of the SRS resource set and DCI, and the like. For example, as shown in table 1, in the configuration information of one SRS resource set, the identifier SRS-ResourceSetId of the SRS resource set is configured as "0", aperiodicSRS-resource trigger is configured as "1", and if the transmission is a non-codebook, a CSI-RS resource identifier is also configured, where the CSI-RS resource identifier is "0"; in the configuration information of the other SRS resource set, the identification SRS-ResourceSetId of the SRS resource set is configured as '1', aperiodicSRS-resource trigger is configured as '2', if the transmission is a non-codebook, a CSI-RS resource identification is also configured, and the CSI-RS resource identification is '1'; in the configuration information of the third SRS resource set, the identifier SRS-ResourceSetId of the SRS resource set is configured as "2", aperiodicSRS-resource trigger is configured as "3", and if the transmission is a non-codebook, a CSI-RS resource identifier is also configured, where the CSI-RS resource identifier is "2". The above is merely an example, and the present application is not limited to this for the relation between SRS-ResourceSetId, aperiodicSRS-resource trigger and CSI-RS resource identity.

TABLE 1 identification of aperiodic SRS resource set, aperiodic sounding reference signal resource trigger, and CSI-RS resource index

Relationships between identities

SRS-ResourceSetId	aperiodicSRS-resource trigger	CSI-RS resource identification
			0	1	0
1	2	1
			2	3	2

The aperiodicSRS-resource trigger is used for indicating association between the aperiodic SRS triggering state and the SRS resource sets, that is, when the DCI triggers the aperiodic SRS, the DCI triggers one SRS resource set of the one or more SRS resource sets. Specifically, the set of aperiodic SRS resources is triggered by an SRS request field (SRS request field) in the DCI. For example, as shown in table 2, assuming that the value of the SRS request field is "00", it means that the aperiodic SRS resource set is not triggered; assuming that the value of the SRS request domain is "01", the SRS resource set corresponding to trigger aperiodicSRS-resource trigger is 1, and in combination with table 1, the SRS resource set with the SRS-ResourceSetId mark being "0" is triggered; assuming that the value of the SRS request domain is '10', the SRS resource set corresponding to trigger aperiodicSRS-resource trigger is 2, and in combination with the table 1, the SRS resource set with the SRS-ResourceSetId mark being '1' is triggered; assuming that the value of the SRS request field is "11", it indicates that the SRS resource set corresponding to trigger aperiodicSRS-resource trigger is 3, and in combination with table 1, the SRS resource set identified as "2" by SRS-ResourceSetId is triggered. Of course, the above is merely an example, and the correspondence of the SRS request domain and the triggered aperiodic SRS resource set according to the present application is not limited thereto.

Table 2 DCI triggers aperiodic SRS

SRS request field in DCI	Triggered aperiodic SRS resource set
		00	Non-triggering aperiodic SRS resource set
01	AperiodicSRS-resource trigger is 1 and corresponding SRS resource set
		10	AperiodicSRS-resource trigger is 2 and corresponding SRS resource set
11	AperiodicSRS-resource trigger is 3 corresponding SRS resource set

And the CSI-RS corresponding to the CSI-RS resource identification is used for calculating the precoding of SRS transmission in the SRS resource set associated with the CSI-RS resource identification. And when the network equipment triggers the aperiodic SRS resource set through the DCI, the triggered time slot offset value between the aperiodic SRS resource set and the DCI is used for indicating the time slot offset value between the aperiodic SRS resource set and the DCI.

S102, the network equipment sends DCI to the terminal equipment.

Accordingly, the terminal device receives the DCI.

Wherein the DCI is used to indicate or trigger one of the one or more SRS resource sets, or not trigger an aperiodic SRS resource set, for example, as shown in table 2.

S103, transmitting the CSI-RS to the terminal equipment on the CSI-RS resources associated with the SRS resource set indicated by the DCI.

Accordingly, the terminal device receives the CSI-RS.

After transmitting the DCI, the network device transmits the CSI-RS on the CSI-RS resources. The CSI-RS resources are associated with the set of SRS resources triggered or indicated by the DCI as shown in table 1. The CSI-RS resource comprises a time-frequency resource and a port number of the CSI-RS.

In this embodiment, in order to save power consumption of the terminal device during non-codebook transmission, when the network device triggers aperiodic SRS transmission, the CSI-RS and DCI associated with the SRS resource set are not in the same slot, i.e. the slot offset value between the CSI-RS resource and the DCI is greater than 0. The terminal equipment does not receive DCI and CSI-RS in the same time slot, so that the terminal equipment can be prevented from receiving and caching the CSI-RS while detecting the DCI; the processing time of the PDCCH can be relaxed, so that the power consumption of the terminal equipment is saved, and the power consumption caused by the high clock frequency and voltage requirements of the terminal equipment is also high if the processing time of the terminal equipment to the PDCCH is short; if the PDCCH has abundant processing time, the terminal equipment has lower requirements on clock frequency and voltage, and the power consumption is also lower.

Illustratively, in the slot map for triggering the aperiodic SRS according to the example of the present embodiment shown in fig. 4, the slot offset value between the CSI-RS resource and the DCI may be the first slot offset value shown in fig. 4. As can be seen from fig. 4, the CSI-RS is not in the same slot as the DCI, i.e., the first slot offset value is greater than 0. The time slot offset value between the CSI-RS and the DCI may be a time slot offset value between a start symbol of the CSI-RS and a start symbol of the DCI, or may be a time slot offset value between an end symbol of the CSI-RS and an end symbol of the DCI, or may be a time slot offset value between a start symbol of a time slot in which the CSI-RS is located and a start symbol of a time slot in which the DCI is located, or may be a time slot offset value between an end symbol of a time slot in which the CSI-RS is located and an end symbol of a time slot in which the DCI is located.

In one implementation, the first slot offset value may be a slot offset value between CSI-RS and DCI configured by the network device, the first slot offset value being greater than 0. The first slot offset value may be included in the configuration information of the SRS resource set, and the network device configures the first slot offset value of the CSI-RS resource while configuring the CSI-RS resource associated with the SRS resource set, that is, the configuration information of the SRS resource set and the first slot offset value may be sent using the same RRC signaling, for example, as shown in table 3. Of course, the configuration information of the SRS resource set and the first slot offset value may also be transmitted using different RRC signaling. The first slot offset value may be flexibly configured by the network device.

Table 3 relationship between identification of aperiodic SRS resource set, aperiodic sounding reference signal resource trigger, and CSI-RS resource identification, first slot offset value

SRS-ResourceSetId	aperiodicSRS-resource trigger	CSI-RS resource identification	First time slot offset value
				0	1	0	1
1	2	1	2
				2	3	2	1

In table 3, the relation between the aperiodic SRS resource set identifier, the aperiodic sounding reference signal resource trigger and the CSI-RS resource identifier is only an example, and the corresponding first slot offset values may be configured to other values or configured to the same value, or configured to one first slot offset value applicable to CSI-RS resources associated with multiple SRS resource sets.

In another implementation, the first slot offset value may also be the minimum value available in the slot offset values between the physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) of the predefined terminal device and the PDCCH on which the PDSCH is scheduled; or the first slot offset value may be the minimum value available in the slot offset values between a Physical Uplink SHARED CHANNEL (PUSCH) of the terminal device and the PDCCH on which the PUSCH is scheduled. The first slot offset value may also be predefined as the minimum slot offset value available in the DCI for the CSI request field triggering the aperiodic CSI-RS. By predefining the first slot offset value, signaling overhead of the network device may be saved.

Specifically, the network device configures or predefines a time domain resource allocation list (time domain resource allocation list) (or called a time domain resource allocation set) of PDSCH or a time domain resource allocation list of PUSCH to the terminal device through RRC signaling, where the time domain resource allocation list includes a time slot offset value between a PDCCH and a scheduled PDSCH or between a PDCCH and a scheduled PUSCH, and a starting symbol and a length of the PDSCH or PUSCH in a time slot. The value of the time slot offset in the time domain resource allocation list may be greater than or equal to 0, and the number of values may be configured to be multiple, for example, the time slot offset may be configured to be {0,1,2,3,4,5,6}, when the network device actually schedules to the terminal device, one of the time slot offsets is indicated by the PDCCH, which indicates the time domain position of the PDSCH or PUSCH currently scheduled. The network device configures or predefines a slot offset value between the aperiodic NZP CSI-RS resource set and the DCI triggering the aperiodic NZP CSI-RS resource set between the network device and the terminal device through RRC signaling to the terminal device, and the slot offset value may be greater than or equal to 0. In order to save power consumption of the terminal device, the network device may indicate to the terminal device, through display signaling or implicit signaling, an available minimum value in the time domain resource allocation list or an available minimum value of the CSI request domain trigger aperiodic NZP CSI-RS, for example, the available minimum value is 1. In the application, the method for determining the available minimum time slot offset value between the PDSCH and the PDCCH, or the available minimum time slot offset value between the PUSCH and the PDCCH, or the available minimum offset value of the non-periodic NZP CSI-RS triggered by the CSI request domain is not limited. In this embodiment, the first slot offset value is the minimum value available in the slot offset values between the PDSCH and the PDCCH, or the minimum value available in the slot offset values between the PUSCH and the PDCCH, or the minimum offset value available in the CSI request field triggering aperiodic NZP CSI-RS, where the minimum value available refers to the minimum effective value in the slot offset values.

In addition, the slot offset value of the DCI and SRS resource set in the application is larger than 0.

Further, the method may further include:

S104, the terminal equipment performs measurement based on the received CSI-RS to obtain precoding for SRS.

After receiving the CSI-RS, the terminal equipment measures the CSI-RS, and precoding of the SRS is obtained based on measurement of the CSI-RS associated with the SRS resource set.

S105, the terminal equipment transmits the SRS to the network equipment.

Accordingly, the network device receives the SRS.

Wherein steps S104 and S105 are optional steps. Indicated by a dashed line. In addition, the receiving and measuring of the CSI-RS by the terminal device do not have a precedence relation, i.e. the receiving and measuring of the CSI-RS by the terminal device can be performed simultaneously. The terminal device may also measure the CSI-RS for a period of time after receiving the CSI-RS.

According to the communication method provided by the embodiment of the application, when non-codebook transmission is carried out, the time slot offset value between the CSI-RS resource and the DCI indicating the SRS resource set is larger than zero, so that the terminal equipment does not need to receive and buffer the CSI-RS while detecting the DCI, and the power consumption of the terminal equipment is saved.

Precoding of SRS in non-codebook transmission is based on CSI-RS measurements, which take a period of time. In order to be able to obtain the precoding of the SRS, it is necessary to ensure a time interval between the CSI-RS and the SRS, which may be expressed as a measurement duration of the CSI-RS. And after the terminal equipment finishes the CSI-RS measurement within the measurement duration, the triggered precoding of the SRS is updated. For example, the terminal device may update the precoding of the SRS according to the measurement when at least 42 symbols from the last symbol of the CSI-RS resource to the first symbol of the SRS are satisfied between the associated CSI-RS and SRS. Therefore, determining the slot offset value between the CSI-RS resource and the DCI by the above network device configuration or predefined manner may not guarantee the measurement duration of the CSI-RS.

Fig. 5 is an interactive flow chart of another communication method according to an embodiment of the present application, and the method may include the following steps:

S201, the network equipment sends configuration information of SRS resource sets to the terminal equipment.

This step may be implemented with reference to step S101 of the embodiment shown in fig. 3.

S202, the network equipment sends DCI to the terminal equipment.

Accordingly, the terminal device receives the DCI.

This step may be implemented with reference to step S102 of the embodiment shown in fig. 3.

S203, the terminal equipment determines a time slot offset value between the CSI-RS resource and the DCI, wherein the time slot offset value between the CSI-RS resource and the DCI is larger than 0.

In one implementation, the terminal device may determine a slot offset value between the CSI-RS resource and the DCI according to the first slot offset value, or may determine a slot offset value between the CSI-RS resource and the DCI according to the second slot offset value. The first time slot offset value is a time slot offset value between the CSI-RS and the DCI configured by the network equipment, and the configuration information comprises the first time slot offset value; or the first time slot offset value is the minimum value available in the time slot offset values between the PDSCH of the terminal device and the PDCCH of the scheduling PDSCH; or the first time slot offset value is the minimum value available in the time slot offset values between the PUSCH of the terminal equipment and the PDCCH of the scheduled PUSCH, or the minimum available time slot offset value of the CSI request field triggering the aperiodic CSI-RS. The second time slot offset value is a difference value between a time slot offset value corresponding to the SRS resource set and the measurement duration of the CSI-RS in actual transmission, wherein the time slot offset value corresponding to the SRS resource set refers to a time slot offset value between the SRS resource set and the DCI. The measurement duration of the CSI-RS refers to a slot offset value between the last symbol of the CSI-RS and the first symbol of the SRS, and is generally predefined, for example, greater than or equal to 42 symbols. The slot offset value corresponding to the SRS resource set, that is, the slot offset value between the SRS resource set and the DCI, will be described in detail later. In this embodiment, the determining, by the terminal device, that the slot offset value between the CSI-RS and the DCI may be a smaller value of the first slot offset value and the second slot offset value. In this way, the influence caused by the fact that the time slot offset value between the CSI-RS and the DCI is larger than 0 is counteracted, the power consumption of the terminal equipment is saved, and meanwhile the measurement duration of the CSI-RS is ensured.

Specifically, as shown in fig. 6, according to still another slot diagram of triggering an aperiodic SRS, a slot in which a CSI-RS is determined according to a slot in which DCI is located and the first slot offset value is shown as a slot 2 in fig. 6, a slot in which a CSI-RS is determined according to a difference between a slot offset value corresponding to an SRS resource set and a measurement duration of the CSI-RS is shown as a slot 1 in fig. 6, and in order to ensure the measurement duration of the CSI-RS, a network device actually sends or a terminal device actually receives a slot position of the CSI-RS, and the slot 1 and the slot 2 are compared, and if the slot 1 is before the slot 2, a transmission slot of the CSI-RS is the slot 1; if slot 2 precedes slot 1, the transmission slot of the CSI-RS is slot 2.

In another implementation, the network device configures a slot offset value between the SRS resource set and the DCI, that is, a third slot offset value, and defines a measurement duration of the CSI-RS, and according to the third slot offset value and the measurement duration of the CSI-RS, it may be determined that the slot offset value between the CSI-RS resource and the DCI may be less than or equal to a difference between the third slot offset value and the measurement duration of the CSI-RS. In order to ensure the measurement duration of the CSI-RS, the network device may configure a larger slot offset value between the SRS resource set and the DCI. As shown in fig. 7, in yet another example of the embodiment, the time slot diagram of the aperiodic SRS is triggered, where the difference between the third time slot offset value and the measurement duration of the CSI-RS is a fifth time slot offset value, the time slot offset value between the CSI-RS resource and the DCI may be less than or equal to the fifth time slot offset value, and at the same time, the time slot offset value between the CSI-RS resource and the DCI is greater than 0, so that power consumption of the terminal device is saved, and at the same time, the measurement duration of the CSI-RS is ensured.

The slot offset value corresponding to the SRS resource set, that is, the slot offset value between the SRS resource set and the DCI, may be determined by any one of the following implementations:

In one implementation, since the time slot offset value between the CSI-RS and the DCI is greater than 0, when the network device configures the time slot offset value between the SRS resource set and the DCI, a larger time slot offset value between the SRS resource set and the DCI may be configured to ensure the measurement duration of the CSI-RS, and then the time slot offset value between the SRS resource set and the DCI in actual transmission may use the time slot offset value between the SRS resource set and the DCI configured in the configuration information, that is, the third time slot offset value.

In another implementation, the network device may not introduce factors that are greater than 0 in configuring the third slot offset value, i.e., the slot offset value between the SRS resource set and the DCI. When the time slot offset value between the CSI-RS and the DCI is greater than 0, the time slot offset value between the time slot position actually transmitted by the SRS resource set and the DCI is greater than the third time slot offset value configured by the network equipment, so that the measurement duration of the CSI-RS is ensured as much as possible. As another example of triggering the slot map of the aperiodic SRS according to the embodiment shown in fig. 8, the difference between the slot position of the SRS resource set transmission and the DCI and the third slot offset value is a fourth slot offset value, which may be a value greater than or equal to 0, that is, the slot offset value between the slot position of the SRS resource set transmission and the DCI is the third slot offset value plus the fourth slot offset value.

In yet another implementation, the difference between the slot offset value between the SRS resource set and the DCI and the third slot offset value may be a first slot offset value, where the first slot offset value is greater than 0, i.e., the slot offset value between the SRS resource set and the DCI is the sum of the first slot offset value and the third slot offset value, or, in other words, the fourth slot offset value in fig. 8 is equal to the first slot offset value. In this way, the influence caused by the fact that the time slot offset value between the CSI-RS and the DCI is larger than 0 is counteracted, the power consumption of the terminal equipment is saved, and meanwhile the measurement duration of the CSI-RS is ensured.

Optionally, before, after, or simultaneously with S202, the method may further include the steps of: the network device determines a slot offset value between the CSI-RS resource and the DCI. The manner in which the network device determines the slot offset value between the CSI-RS resource and the DCI may refer to the manner in which the terminal device determines the slot offset value between the CSI-RS resource and the DCI in S203.

S204, transmitting the CSI-RS to the terminal equipment on the CSI-RS resources associated with the SRS resource set indicated by the DCI.

And the network equipment transmits the CSI-RS according to the determined time slot offset value between the CSI-RS resource and the DCI.

Correspondingly, the terminal equipment receives the CSI-RS according to the determined time slot offset value between the CSI-RS resource and the DCI.

S205, the terminal equipment performs measurement based on the received CSI-RS to obtain precoding for SRS.

This step may be implemented with reference to step S104 of the embodiment shown in fig. 3.

S206, the terminal equipment transmits the SRS to the network equipment.

This step may be implemented with reference to step S105 of the embodiment shown in fig. 3.

According to the communication method provided by the embodiment of the application, when non-codebook transmission is carried out, the time slot offset value between the CSI-RS resource and the DCI indicating the SRS resource set is larger than zero, so that the terminal equipment does not need to receive and cache the CSI-RS while detecting the DCI, and the power consumption of the terminal equipment is saved; meanwhile, the measurement duration of the CSI-RS is ensured.

The foregoing details of the method according to the embodiments of the present application and the apparatus according to the embodiments of the present application are provided below.

Based on the same concept of the communication method in the above embodiment, as shown in fig. 9, an embodiment of the present application further provides a communication device 100, which can be applied to the communication method described in fig. 3. The communication device 100 comprises a transceiver unit 11 and may further comprise a processing unit 12; exemplary:

a transceiver unit 11, configured to receive configuration information of an SRS resource set from a network device;

the transceiver unit 11 is further configured to receive DCI from the network device, where the DCI is used to indicate the SRS resource set;

The transceiver unit 11 is further configured to receive, on a CSI-RS resource of a CSI reference signal associated with the SRS resource set, a CSI-RS transmitted by the network device, where a slot offset value between the CSI-RS resource and the DCI is greater than 0.

In one implementation, the processing unit 12 is configured to obtain precoding for the SRS based on the CSI-RS measurements;

the transceiver unit 11 is further configured to transmit the SRS.

The more detailed description of the transceiver unit 11 and the processing unit 12 can be obtained by referring to the related description of the terminal device in the method embodiment described in fig. 3, which is not repeated herein. The transceiver unit may be an integrated device having a transceiver function, or may be composed of a separate receiving unit having a receiving function and a transmitting unit having a transmitting function, and may be logically referred to as a "transceiver unit".

According to the communication device provided by the embodiment of the application, when non-codebook transmission is carried out, the time slot offset value between the CSI-RS resource and the DCI indicating the SRS resource set is larger than zero, so that the terminal equipment does not need to receive and buffer the CSI-RS while detecting the DCI, and the power consumption of the communication device is saved.

Based on the same concept of the communication method in the above embodiment, as shown in fig. 10, the embodiment of the present application further provides a communication device 200, where the communication device 200 can be applied to the communication method shown in fig. 3. The communication device 200 includes; a transceiver unit 21; exemplary:

A transceiver unit 21, configured to send configuration information of a sounding reference signal SRS resource set to a terminal device;

the transceiver unit 21 is further configured to send downlink control information DCI to the terminal device, where the DCI is used to indicate the SRS resource set;

The transceiver unit 21 is further configured to send a CSI-RS to the terminal device on a CSI-RS resource associated with the SRS resource set, where a slot offset value between the CSI-RS resource and the DCI is greater than 0.

In one implementation, the transceiver unit 21 is further configured to receive an SRS from the terminal device, where precoding of the SRS is obtained based on measurement of the CSI-RS.

A more detailed description of the transceiver unit 21 may be obtained by referring to the description related to the network device in the method embodiment described in fig. 3, which is not repeated herein. The transceiver unit may be an integrated device having a transceiver function, or may be composed of a separate receiving unit having a receiving function and a transmitting unit having a transmitting function, and may be logically referred to as a "transceiver unit".

According to the communication device provided by the embodiment of the application, when the non-codebook transmission is carried out, when the communication device triggers the SRS and sends the CSI-RS, the time slot offset value between the CSI-RS resource and the DCI indicating the SRS resource set is larger than zero, so that the terminal equipment does not need to receive and buffer the CSI-RS while detecting the DCI, and the power consumption of the terminal equipment is saved.

The embodiment of the application also provides a communication device which is used for executing the communication method. Some or all of the above communication methods may be implemented by hardware or software.

Alternatively, the communication means may be a chip or an integrated circuit when embodied.

Alternatively, when part or all of the communication methods of the above embodiments are implemented by software, the communication apparatus includes: and a processor for executing a program, which when executed, enables the communication device to implement the communication method provided in the above embodiment, the communication device further comprising a memory for storing necessary programs, the programs involved being loaded into the memory at the time of shipment of the communication device, or reloaded into the memory at a later time when required.

In the alternative, the memory may be physically separate units or may be integrated with the processor.

Alternatively, when part or all of the communication methods of the above embodiments are implemented by software, the communication apparatus may include only the processor. The memory for storing the program is located outside the communication device and the processor is connected to the memory via a circuit/wire for reading and executing the program stored in the memory.

The processor may be a central processor (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP.

In the alternative, the processor may comprise a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (FPGA) GATE ARRAY, generic array logic (GENERIC ARRAY logic, GAL), or any combination thereof.

The memory may include volatile memory (RAM), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a hard disk (HARD DISK DRIVE, HDD) or a solid state disk (solid-state drive (SSD); the memory may also comprise a combination of the above types of memories.

Fig. 11 shows a simplified schematic diagram of the structure of a terminal device. For easy understanding and convenient illustration, in fig. 11, a mobile phone is taken as an example of the terminal device. As shown in fig. 11, the terminal device includes a processor, and may further include a radio frequency circuit, an antenna, and an input-output device. The processor may be used for processing communication protocols and communication data, for controlling the terminal device, for executing software programs, for processing data of software programs, etc., as examples. The terminal device may also comprise a memory for storing mainly software programs and data, which programs may be loaded into the memory at the time of shipment of the communication device or reloaded into the memory at a later time when needed. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor is shown in fig. 11. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiver function may be regarded as a receiving unit and a transmitting unit (may also be collectively referred to as a transceiver unit) of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 11, the terminal device includes a receiving unit 31, a processing unit 32, and a transmitting unit 33. The receiving unit 31 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit 33 may also be referred to as a transmitter, a transmitting circuit, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc.

For example, in one embodiment, the receiving unit 31 is configured to perform the functions of the terminal device in steps S101 to S103 in the embodiment shown in fig. 3; the processing unit 32 is configured to execute step S104 of the embodiment shown in fig. 3; and the transmitting unit 33 is configured to perform the function of the terminal device in step S105 in the embodiment shown in fig. 3.

For example, in yet another embodiment, the receiving unit 31 is configured to perform the functions of the terminal device in steps S201 to S202, S204 of the embodiment shown in fig. 5; the processing unit 32 is configured to execute steps S203 and S205 in the embodiment shown in fig. 5; and the transmitting unit 33 is configured to perform the function of the terminal device in step S206 in the embodiment shown in fig. 5.

Fig. 12 shows a simplified schematic diagram of the structure of a network device. The network device includes a radio frequency signal transceiving and converting part and a part 42, which in turn includes a receiving unit 41 part and a transmitting unit 43 part (which may also be collectively referred to as transceiving units). The radio frequency signal receiving and transmitting and converting part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals and baseband signals; the 42 part is mainly used for baseband processing, control of network equipment and the like. The receiving unit 41 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit 43 may also be referred to as a transmitter, a transmitting circuit, etc. Portion 42 is typically a control center of the network device, and may be generally referred to as a processing unit, for controlling the network device to perform the steps described above with respect to the network device in fig. 3. See for details the description of the relevant parts above.

The portion 42 may include one or more boards, each of which may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the network device. If there are multiple boards, the boards can be interconnected to increase processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, in one embodiment, the receiving unit 41 is configured to perform the function of the network device in step S105 of the embodiment shown in fig. 3; and the transmitting unit 43 is configured to perform the functions of the network device in steps S101 to S103 in the embodiment shown in fig. 3.

For example, in yet another embodiment, the sending unit 43 is configured to perform the functions of the network device in steps S201 to S202, S204 in the embodiment shown in fig. 5; and the receiving unit 41 is configured to perform the functions of the network device in step S206 of the embodiment shown in fig. 5.

Embodiments of the present application also provide a computer-readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the method described in the above embodiments.

Embodiments of the present application also provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method described in the above embodiments.

The embodiment of the application also provides a communication system which comprises any network equipment side communication device and/or any terminal side communication device.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the division of the unit is merely a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. The coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted across a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a read-only memory (ROM), or a random-access memory (random access memory, RAM), or a magnetic medium such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium such as a digital versatile disk (DIGITAL VERSATILE DISC, DVD), or a semiconductor medium such as a Solid State Disk (SSD), or the like.

Claims

1. A method of communication, the method comprising:

Receiving configuration information of a Sounding Reference Signal (SRS) resource set from network equipment, wherein the configuration information comprises a third time slot offset value, and the third time slot offset value is a time slot offset value between the SRS resource set configured by the network equipment and DCI; the time slot offset value between the CSI-RS resource and the DCI is smaller than or equal to the difference value between the third time slot offset value and the measurement duration of the CSI-RS;

receiving Downlink Control Information (DCI) from the network equipment, wherein the DCI is used for indicating the SRS resource set;

And receiving the CSI-RS sent by the network equipment on a channel state information reference signal (CSI-RS) resource associated with the SRS resource set, wherein a time slot offset value between the CSI-RS resource and the DCI is greater than 0, and the time slot offset value between the CSI-RS resource and the DCI is configured by the network equipment, predefined or determined according to the measurement duration of the CSI-RS.

2. The method according to claim 1, wherein the method further comprises:

measuring based on the CSI-RS to obtain precoding for the SRS;

And sending the SRS.

3. A method of communication, the method comprising:

Transmitting configuration information of a Sounding Reference Signal (SRS) resource set to terminal equipment, wherein the configuration information comprises a third time slot offset value, and the third time slot offset value is a time slot offset value between the SRS resource set configured by network equipment and DCI; the time slot offset value between the CSI-RS resource and the DCI is smaller than or equal to the difference value between the third time slot offset value and the measurement duration of the CSI-RS;

transmitting Downlink Control Information (DCI) to the terminal equipment, wherein the DCI is used for indicating the SRS resource set;

And transmitting a CSI-RS to the terminal equipment on a channel state information reference signal (CSI-RS) resource associated with the SRS resource set, wherein a time slot offset value between the CSI-RS resource and the DCI is greater than 0, and the time slot offset value between the CSI-RS resource and the DCI is configured by the network equipment, or is predefined, or is determined according to the measurement duration of the CSI-RS.

4. A method according to claim 3, characterized in that the method further comprises:

and receiving SRS from the terminal equipment, wherein the precoding of the SRS is obtained based on the measurement of the CSI-RS.

5. The method according to any one of claims 1-4, wherein a slot offset value between the CSI-RS resource and the DCI is a first slot offset value;

The first time slot offset value is a time slot offset value between the CSI-RS configured by the network device and the DCI, and the configuration information includes the first time slot offset value; or the first time slot offset value is the minimum value in time slot offset values between a physical downlink shared channel PDSCH of the terminal equipment and a physical downlink control channel PDCCH for scheduling the PDSCH; or the first time slot offset value is the minimum value of time slot offset values between a Physical Uplink Shared Channel (PUSCH) of the terminal equipment and a PDCCH for scheduling the PUSCH.

6. The method according to any one of claims 1-4, wherein a slot offset value between the CSI-RS resource and the DCI is the smaller of a first slot offset value and a second slot offset value;

the first time slot offset value is a time slot offset value between the CSI-RS configured by the network device and the DCI, and the configuration information includes the first time slot offset value; or the first time slot offset value is the minimum value in time slot offset values between a physical downlink shared channel PDSCH of the terminal equipment and a physical downlink control channel PDCCH for scheduling the PDSCH; or the first time slot offset value is the minimum value in time slot offset values between a Physical Uplink Shared Channel (PUSCH) of the terminal equipment and a physical uplink shared channel (PDCCH) for scheduling the PUSCH;

The second slot offset value is a difference value between the slot offset value between the SRS resource set and the DCI and the measurement duration of the CSI-RS.

7. A communication device, the device comprising:

A transceiver unit, configured to receive configuration information of a sounding reference signal SRS resource set from a network device, where the configuration information includes a third slot offset value, where the third slot offset value is a slot offset value between the SRS resource set configured by the network device and DCI; the time slot offset value between the CSI-RS resource and the DCI is smaller than or equal to the difference value between the third time slot offset value and the measurement duration of the CSI-RS;

The transceiver unit is further configured to receive downlink control information DCI from the network device, where the DCI is used to indicate the SRS resource set;

The transceiver is further configured to receive, on a CSI-RS resource associated with the SRS resource set, a CSI-RS transmitted by the network device, where a slot offset value between the CSI-RS resource and the DCI is greater than 0, and the slot offset value between the CSI-RS resource and the DCI is configured by the network device, predefined, or determined according to a measurement duration of the CSI-RS.

8. The communication device of claim 7, wherein the device further comprises:

a processing unit, configured to obtain precoding for the SRS based on measurement of the CSI-RS;

The receiving and transmitting unit is further configured to transmit the SRS.

9. A communication device, the device comprising:

A transceiver unit, configured to send configuration information of a sounding reference signal SRS resource set to a terminal device, where the configuration information includes a third slot offset value, where the third slot offset value is a slot offset value between the SRS resource set configured by the network device and DCI; the time slot offset value between the CSI-RS resource and the DCI is smaller than or equal to the difference value between the third time slot offset value and the measurement duration of the CSI-RS;

The transceiver unit is further configured to send downlink control information DCI to the terminal device, where the DCI is used to indicate the SRS resource set;

The transceiver unit is further configured to send a CSI-RS to the terminal device on a CSI-RS resource associated with the SRS resource set, where a slot offset value between the CSI-RS resource and the DCI is greater than 0, and the slot offset value between the CSI-RS resource and the DCI is configured by the network device, or is predefined, or is determined according to a measurement duration of the CSI-RS.

10. The apparatus of claim 9, wherein the apparatus further comprises:

The receiving and transmitting unit is further configured to receive an SRS from the terminal device, where precoding of the SRS is obtained based on measurement of the CSI-RS.

11. The apparatus according to any one of claims 7-9, wherein a slot offset value between the CSI-RS resource and the DCI is a first slot offset value;

12. The apparatus according to any one of claims 7-9, wherein a slot offset value between the CSI-RS resource and the DCI is a smaller one of a first slot offset value and a second slot offset value;

13. A communication device, the device comprising: a transceiver, a memory, and a processor; wherein the memory stores a set of program code and the processor is configured to invoke the program code stored in the memory to perform the method of any of claims 1-6.

14. A non-transitory computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1-6.