CN112087292B

CN112087292B - Channel state measurement parameter indication method and device

Info

Publication number: CN112087292B
Application number: CN201910518486.0A
Authority: CN
Inventors: 薛祎凡; 张战战; 周涵; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-06-15
Filing date: 2019-06-15
Publication date: 2021-11-30
Anticipated expiration: 2039-06-15
Also published as: CN112087292A; WO2020253641A1

Abstract

The embodiment of the application discloses a channel state measurement parameter indication method and device, which are used for reducing power consumption of a terminal. The method comprises the following steps: a terminal determines a first channel state information reference signal (CSI-RS) trigger offset value, wherein the first CSI-RS trigger offset value is the minimum value of a time slot difference between a time slot in which a PDCCH Based Power Saving Signal (PBPSS) is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located; a terminal receives a first PBPSS sent by network equipment; the terminal receives a first CSI-RS sent by network equipment; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not less than the first CSI-RS trigger offset value.

Description

Channel state measurement parameter indication method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a method and a device for indicating channel state measurement parameters.

Background

The standby time of the terminal is an important part affecting the user experience. Due to the fifth generation (5)^thgeneration, 5G) New Radio (NR) system needs to support a larger bandwidth, a higher transmission rate, and a wider coverage than that of a Long Term Evolution (LTE) system, so that the power consumption of the NR terminal is larger than that of the LTE terminal.

In order to reduce the power consumption of the terminal and ensure good user experience, the 3rd generation standardization organization (3 GPP) has made a project for saving the power consumption of the terminal in Rel-16, and studies how to reduce the optimization scheme of the power consumption of the terminal so as to achieve the purpose of saving the power consumption of the terminal. The power saving topic is as follows: the network device sends a 'PDCCH-based power consumption saving signal' to the terminal to instruct the terminal to perform a series of operations so as to save power consumption. The PDCCH-based power saving signal may precede an active period "On Duration" of a discontinuous reception (C-DRX) to indicate whether the terminal is to monitor scheduling in the On Duration. In addition, the "PDCCH-based power saving signal" may also be used to indicate other functions, for example, to instruct the terminal to perform channel state information reference signal (CSI-RS) measurement, and the power saving signal may trigger an aperiodic CSI-RS and a CSI report. Through CSI measurement and reporting, the network equipment can know the specific state of the downlink channel, so that more appropriate parameters can be used for scheduling in the On Duration, and the transmission efficiency and the transmission speed are improved. Therefore, the terminal can enter a short-time dormant state after the terminal rapidly receives/sends the data, and power consumption is saved.

The aperiodic CSI-RS trigger offset value (triggering offset) determines whether the PDCCH is in the same slot or in a different slot than the CSI-RS it triggers. If the triggerring offset of the CSI-RS configured by the network device is too small (e.g., 0), in order to avoid data and/or signal loss, the terminal must buffer data and/or signals while decoding the PDCCH after receiving the PDCCH, and the terminal needs to turn on its radio frequency module at any time to buffer data and/or signals, which results in wasted power consumption.

One simplest solution is that the network device configures the triggerring offset of all CSI-RSs of the terminal large enough. However, such "configuration limitations" have a great influence on the configuration flexibility of the network device. Currently, no suitable solution is given for the setting of the aperiodic CSI-RS trigger offset value.

Disclosure of Invention

The embodiment of the application provides a channel state measurement parameter indication method and device, so as to reduce power consumption of a terminal.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a method for indicating a channel state measurement parameter, where a terminal determines a first channel state information reference signal (CSI-RS) trigger offset value, where the first CSI-RS trigger offset value is a minimum value of a slot difference between a slot in which a power saving signal (PDCCH based power saving signal/channel, PBPSS) based on a physical downlink control channel PDCCH is located and a slot in which an aperiodic CSI-RS triggered by a PBPSS is located; a terminal receives a first PBPSS sent by network equipment; the terminal receives a first CSI-RS sent by network equipment; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not smaller than the first CSI-RS trigger offset value.

The PBPSS is used for indicating whether the terminal needs to monitor scheduling in the OnDuration before the activation period OnDuration of one discontinuous reception.

The CSI-RS is used for the terminal to measure the channel state between the terminal and the network equipment. Besides, the PBPSS is used to indicate whether the terminal needs to monitor and schedule in the OnDuration, and also used to indicate the terminal to perform CSI measurement and report CSI. Through CSI measurement and reporting, the network equipment can know the specific state of the downlink channel, so that more appropriate parameters can be used for scheduling in the On Duration, and the transmission efficiency and the transmission speed are improved. Therefore, the terminal can enter a short-time dormant state after the terminal rapidly receives/sends the data, and power consumption is saved. The first PBPSS is a specific certain power consumption saving signal, such as WUS and first CSI-RS, and indicates to trigger a channel measurement reference signal for certain channel measurement for the first PBPSS.

Based on the method provided by the first aspect, the terminal may determine the first CSI-RS trigger offset value, where the first CSI-RS trigger offset value is less than or equal to a time slot difference between a time slot in which the PDCCH-based power consumption saving signal is located and a time slot in which the aperiodic CSI-RS triggered by the PDCCH is located, so that the first CSI-RS trigger offset value may also be understood as a minimum value of a time slot difference between a time slot in which the PDCCH-based power consumption saving signal is located and a time slot in which the aperiodic CSI-RS triggered by the PDCCH is located. When the first CSI-RS trigger offset value offset is set to be large enough, first, the terminal may explicitly know that the network device does not send the CSI-RS signal for an offset number of slots after the slot where the network device sends the PDCCH-based power consumption saving signal, and the terminal does not need to buffer data during this time, so the terminal may turn off the radio frequency module to save power consumption. Secondly, the terminal can slow down the decoding speed and reduce the processing voltage, thereby saving the power consumption.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the determining, by the terminal, the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group is a group of resources configured for the terminal by the network equipment, and any one resource in the first CSI-RS resource group is only triggered in the PBPSS.

In this implementation, the network device configures a dedicated resource for the PDCCH-based power saving signal-triggered CSI-RS, so that the offset between the PDCCH-based power saving signal and the aperiodic CSI-RS triggered by the PDCCH-based power saving signal is sufficiently large. Before offset time slots are formed after the PDCCH-based power consumption saving signal, the terminal cannot receive CSI-RS transmission, the radio frequency module can be turned off, unnecessary signal reception is avoided, the terminal can slow down the decoding speed, the processing voltage is reduced, and therefore the purpose of saving energy is achieved. And the resource can be triggered only in a PDCCH-based power saving signal and cannot be triggered in a PDCCH for scheduling data. Specifically, the first embodiment of the present application may be referred to as an implementation manner of configuring the CSI-RS resource by the network device. Optionally, before the network device sends the configuration information to the terminal, the terminal may report an expected "first CSI-RS trigger offset value" to the network device.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the determining, by the terminal, the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources related to the first trigger state group, the first trigger state group is a group of trigger states configured for the terminal by the network equipment, and any one trigger state in the first trigger state group is only indicated in the PBPSS.

In this implementation, the network device defines a special trigger state (triggering state) for the CSI-RS triggered based on the PDCCH power consumption saving signal, and each CSI triggering state is associated with a certain CSI-RS resource and CSI reporting configuration. The difference with the prior art is that the trigger state can only be indicated in the PDCCH-based power saving signal.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the determining, by the terminal, the first CSI-RS trigger offset value includes: the first CSI-RS trigger deviation value is a second trigger deviation value, and the second trigger deviation value is configured to the terminal by the network equipment; the second trigger offset value is used only for PBPSS.

In this implementation, the resource triggering the CSI-RS and the triggering state are both configured according to the prior art, i.e. the PDCCH scheduling data transmission and the configuration of the CSI measurement triggered based on the PDCCH power consumption saving signal are the same set of configuration. In order to ensure that the triggering offset is large enough, the network device configures a second trigger offset value for the terminal, and the second trigger offset value can only be used when the aperiodic CSI-RS signal is triggered in the PDCCH-based power consumption saving signal.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the determining, by the terminal, the first CSI-RS trigger offset value includes: the terminal is configured with a second trigger offset value by the network equipment; the first CSI-RS trigger offset value is the larger one of the second trigger offset value and the third trigger offset value; the third trigger offset value is the minimum K0 value indicated by the network device; the value K0 is a time slot difference between a time slot in which a PDCCH (scheduling PDCCH, SPDCCH) for scheduling data is located and a time slot in which a PDSCH (physical downlink data channel) scheduled by the SPDCCH is located.

In this implementation, the minimum K0 value indicated by the Network device is multiplexed to the radio Network Temporary identity rnti (radio Network Temporary identity) of the "PDCCH-based power saving signal", and the minimum K0 value is used as the third trigger offset value offset 3. Consider also that the network device configures a second trigger offset value, offset2, for the terminal, wherein the second trigger offset value functions to: assume that the terminal does not receive an RS transmission before shifting by 2 slots after the PDCCH-based power saving signal; configuration considerations for the second trigger offset value: PDCCH decoding time, which may require the terminal to start extra hardware and software processing after decoding; the configuration method of the second trigger offset value comprises the following steps: it may be a protocol specification, or a network configuration. Due to the setting of a larger offset, the terminal can slow down the decoding speed, reduce the processing voltage, and save power consumption, so the first CSI-RS trigger offset value should be the larger value of the second trigger offset value and the third trigger offset value.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the determining, by the terminal, the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the smaller one of the third trigger offset value and the fourth trigger offset value; and the fourth trigger offset value is the time slot difference between the time slot of the PBPSS and the OnDuration starting time slot.

In this implementation, the minimum K0 value indicated by the network device is multiplexed to the radio network temporary identifier RNTI of the "PDCCH-based power saving signal", and the minimum K0 value is used as the third trigger offset value, and considering the fourth trigger offset value, where the fourth trigger offset value refers to the time slot difference between the time slot in which the PDCCH-based power saving signal is located and the On Duration start time slot. When the third trigger offset value is smaller than the fourth trigger offset value, the first CSI-RS trigger offset value is the third trigger offset value because the CSI-RS triggered by the power consumption saving signal is after the third trigger offset value. When the third trigger offset value is greater than the fourth trigger offset value, the CSI-RS triggered based On the power consumption saving signal of the PDCCH may be sent after the terminal enters the On Duration. Therefore, the terminal can track the channel or perform operations such as beam management and the like by receiving the CSI-RS more quickly, and the improvement of performance is facilitated, so that the first CSI-RS trigger offset value is the third trigger offset value. And the first CSI-RS trigger offset value is the smaller value of the third trigger offset value and the fourth trigger offset value.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the determining, by the terminal, the first CSI-RS trigger offset value includes: when the second trigger offset value and the third trigger offset value are both smaller than the fourth trigger offset value, the first CSI-RS trigger offset value is the larger one of the second trigger offset value and the third trigger offset value; otherwise, the first CSI-RS trigger offset value is a fourth trigger offset value.

In this implementation, the second, third and fourth trigger offset values, offset2, 3,4, are considered simultaneously. This is considered in three cases: when both the second trigger offset value and the third trigger offset value are smaller than the fourth trigger offset value, which is similar to the third possible implementation, the first CSI-RS trigger offset value should be the larger of the second trigger offset value and the third trigger offset value. When both the second trigger offset value and the third trigger offset value are greater than the fourth trigger offset value, which is similar to the fourth possible implementation, the first CSI-RS trigger offset value should be the fourth trigger offset value. When one of the second trigger offset value and the third trigger offset value is greater than the fourth trigger offset value and one is less than the fourth trigger offset value, taking the second trigger offset value as being less than the fourth trigger offset value and the third trigger offset value as being greater than the fourth trigger offset value as an example, when only the second trigger offset value and the third trigger offset value are considered, taking the larger value of the second trigger offset value and the third trigger offset value as the third trigger offset value, and then considering the third trigger offset value and the fourth trigger offset value, at this time, because the third trigger offset value is greater than the fourth trigger offset value, the fourth trigger offset value should be taken as the first CSI-RS trigger offset value. To sum up, the first CSI-RS trigger offset value may be determined by the following equation: min { max { offset2, offset3}, offset4 }.

In a second aspect, the present application provides a communication device, which may be a terminal or a chip or a system on a chip in a terminal, and may also be a functional module in a terminal for implementing the method according to the first aspect or any possible design of the first aspect. The communication device may implement the functions performed by the terminal in the aspects or possible designs described above, which may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a receiving unit, a determining unit;

the receiving unit is used for receiving the configuration information or the indication information sent by the network equipment;

a determining unit, configured to determine a first channel state information reference signal (CSI-RS) trigger offset value according to the configuration information or the indication information received by the receiving unit, where the first CSI-RS trigger offset value is a minimum value of a time slot difference between a time slot in which a power saving signal (PDCCH based power saving signal/channel, PBPSS) based on a physical downlink control channel PDCCH is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located;

the receiving unit is also used for receiving the first PBPSS sent by the receiving network equipment; the first CSI-RS is also used for receiving the first CSI-RS sent by the network equipment; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not smaller than the first CSI-RS trigger offset value.

Based on the method provided in the second aspect, the terminal may determine the first CSI-RS trigger offset value, where the first CSI-RS trigger offset value is less than or equal to a time slot difference between a time slot in which the PDCCH-based power consumption saving signal is located and a time slot in which the aperiodic CSI-RS triggered by the PDCCH is located, so that the first CSI-RS trigger offset value may also be understood as a minimum value of a time slot difference between a time slot in which the PDCCH-based power consumption saving signal is located and a time slot in which the aperiodic CSI-RS triggered by the PDCCH is located. When the first CSI-RS trigger offset value offset is set to be large enough, first, the terminal may explicitly know that the network device does not send the CSI-RS signal for an offset number of slots after the slot where the network device sends the PDCCH-based power consumption saving signal, and the terminal does not need to buffer data during this time, so the terminal may turn off the radio frequency module to save power consumption. Secondly, the terminal can slow down the decoding speed and reduce the processing voltage, thereby saving the power consumption.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group is a group of resources configured for the terminal by the network equipment, and any one resource in the first CSI-RS resource group is only triggered in the PBPSS.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources related to a first trigger state group, the first trigger state group is a group of trigger states configured for a terminal by network equipment, and any one trigger state in the first trigger state group is only indicated in the PBPSS.

With reference to the second aspect, in a third possible implementation manner of the second aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is a second trigger offset value, and the second trigger offset value is configured to the terminal by the network equipment; the second trigger offset value is for the PBPSS only.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the determining the first CSI-RS trigger offset value includes: the terminal is configured with a second trigger offset value by the network equipment; the first CSI-RS trigger offset value is a larger one of the second trigger offset value and a third trigger offset value; the third trigger offset value is the minimum K0 value indicated by the network device; the value K0 is a time slot difference between a time slot in which a PDCCH (scheduling PDCCH, SPDCCH) for scheduling data is located and a time slot in which a PDSCH (physical downlink data channel) scheduled by the SPDCCH is located.

In this implementation, the minimum K0 value indicated by the Network device is multiplexed to the radio Network Temporary identifier rnti (radio Network Temporary identifier) of the "PDCCH-based power saving signal", and the minimum K0 value is used as the third trigger offset value. Consider also that the network device configures a second trigger offset value, offset2, for the terminal, wherein the second trigger offset value functions to: assume that the terminal does not receive an RS transmission before shifting by 2 slots after the PDCCH-based power saving signal; configuration considerations for the second trigger offset value: PDCCH decoding time, which may require the terminal to start extra hardware and software processing after decoding; the configuration method of the second trigger offset value comprises the following steps: it may be a protocol specification, or a network configuration. Due to the setting of a larger offset, the terminal can slow down the decoding speed, reduce the processing voltage, and save power consumption, so the first CSI-RS trigger offset value should be the larger value of the second trigger offset value and the third trigger offset value.

With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the smaller one of the third trigger offset value and the fourth trigger offset value; wherein the fourth trigger offset value is a time slot difference between the time slot of the PBPSS and the OnDuration starting time slot.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the determining the first CSI-RS trigger offset value includes: when the second trigger offset value and the third trigger offset value are both smaller than the fourth trigger offset value, the first CSI-RS trigger offset value is the larger one of the second trigger offset value and the third trigger offset value; otherwise, the first CSI-RS trigger offset value is the fourth trigger offset value.

In a third aspect, a communication apparatus is provided, which may be a terminal or a chip in a terminal or a system on a chip. The communication device may implement the functions performed by the terminal in the above aspects or possible designs, which may be implemented by hardware, such as: in one possible design, the communication device may include: a processor and a communications interface, the processor being operable to support a communications device to implement the functionality referred to in the first aspect above or in any one of the possible designs of the first aspect, for example: the processor may determine a first channel state information reference signal (CSI-RS) trigger offset value through configuration information or indication information received by the communication interface and sent by the network device, where the first CSI-RS trigger offset value is a minimum value of a time slot difference between a time slot in which a power saving signal (PDCCH based power saving signal/channel, PBPSS) based on a physical downlink control channel PDCCH is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located; the communication interface is also used for receiving a first PBPSS sent by the network equipment; the first CSI-RS sent by the network equipment is also received; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not less than the first CSI-RS trigger offset value. In yet another possible design, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. The processor executes the computer executable instructions stored by the memory when the communication device is operating to cause the communication device to perform the channel state measurement parameter indication method as described in the first aspect or any one of the possible designs of the first aspect.

In a fourth aspect, a computer-readable storage medium is provided, which may be a readable non-volatile storage medium, and has stored therein instructions, which when executed on a computer, enable the computer to perform the channel state measurement parameter indication method according to the first aspect or any one of the above possible designs.

In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the above aspect.

In a sixth aspect, a communication apparatus is provided, which may be a terminal or a chip or a system on a chip in a terminal, and includes one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and the one or more memories are configured to store computer program code comprising computer instructions which, when executed by the one or more processors, cause the communication apparatus to perform the channel state measurement parameter indication method as set forth in the first aspect above or any possible design of the first aspect.

For technical effects brought by any design manner in the third aspect to the sixth aspect, reference may be made to the technical effects brought by the first aspect or any possible design manner in the first aspect, and details are not repeated.

In a seventh aspect, an embodiment of the present application provides a method for indicating a channel state measurement parameter, where a network device sends a first power saving signal (PBPSS) based on a physical downlink control channel PDCCH to a terminal; the network equipment sends a first channel state information reference signal (CSI-RS) to the terminal; the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not smaller than a first CSI-RS trigger offset value; the first CSI-RS trigger offset value is the minimum value of the time slot difference between the time slot where the PBPSS is located and the time slot where the aperiodic CSI-RS triggered by the PBPSS is located;

Based on the method provided in the seventh aspect, the network device may send configuration information or indication information to the terminal, so that the terminal determines the first CSI-RS trigger offset value, where the first CSI-RS trigger offset value is less than or equal to a slot difference between a slot where the PDCCH-based power consumption saving signal is located and a slot where the aperiodic CSI-RS triggered by the PDCCH is located, so that the first CSI-RS trigger offset value may also be understood as a minimum value of a slot difference between a slot where the PDCCH-based power consumption saving signal is located and a slot where the aperiodic CSI-RS triggered by the PDCCH is located. When the first CSI-RS trigger offset value offset is set to be large enough, first, the terminal may explicitly know that the network device does not send the CSI-RS signal for an offset number of slots after the slot where the network device sends the PDCCH-based power consumption saving signal, and the terminal does not need to buffer data during this time, so the terminal may turn off the radio frequency module to save power consumption. Secondly, the terminal can slow down the decoding speed and reduce the processing voltage, thereby saving the power consumption.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the first CSI-RS trigger offset value is a minimum value of trigger offset values of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group is a group of resources configured by the network device for the terminal, and any one resource in the first CSI-RS resource group is triggered only in the PBPSS.

With reference to the seventh aspect, in a second possible implementation manner of the seventh aspect, the first CSI-RS trigger offset value is a minimum value of trigger offset values of all CSI-RS resources associated with the first trigger state group, the first trigger state group is a group of trigger states configured by the network device for the terminal, and any trigger state in the first trigger state group is only indicated in the PBPSS.

With reference to the seventh aspect, in a third possible implementation manner of the seventh aspect, the first CSI-RS trigger offset value is a second trigger offset value, and the second trigger offset value is configured by the network device to the terminal; the second trigger offset value is used only for PBPSS.

With reference to the third possible implementation manner of the seventh aspect, in a fourth possible implementation manner of the seventh aspect, the terminal is configured, by the network device, with a second trigger offset value; the first CSI-RS trigger offset value is the larger one of the second trigger offset value and the third trigger offset value; the third trigger offset value is the minimum K0 value indicated by the network device; the value K0 is a time slot difference between a time slot in which a PDCCH (scheduling PDCCH, SPDCCH) for scheduling data is located and a time slot in which a PDSCH (physical downlink data channel) scheduled by the SPDCCH is located.

With reference to the fourth possible implementation manner of the seventh aspect, in a fifth possible implementation manner of the seventh aspect, the first CSI-RS trigger offset value is a smaller one of the third trigger offset value and the fourth trigger offset value; and the fourth trigger offset value is the time slot difference between the time slot of the PBPSS and the OnDuration starting time slot.

With reference to the fifth possible implementation manner of the seventh aspect, in a sixth possible implementation manner of the seventh aspect, when both the second trigger offset value and the third trigger offset value are smaller than the fourth trigger offset value, the first CSI-RS trigger offset value is a larger one of the second trigger offset value and the third trigger offset value; otherwise, the first CSI-RS trigger offset value is a fourth trigger offset value.

In an eighth aspect, the present application provides a communication apparatus, which may be a network device or a chip or a system on a chip in a network device, and may also be a functional module in a network device for implementing any one of the possible designs of the seventh aspect or the seventh aspect. The communication means may implement the functions performed by the network device in each of the above aspects or possible designs, which functions may be implemented by hardware executing the corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a generating unit, a transmitting unit;

a generating unit for generating configuration information or indication information;

a transmitting unit, configured to transmit configuration information or indication information to a terminal; the terminal determines a first channel state information reference signal (CSI-RS) trigger offset value according to the configuration information or the indication information, wherein the first CSI-RS trigger offset value is the minimum value of a time slot difference between a time slot in which a PDCCH (physical downlink control channel) based power saving signal (PBPSS) is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located;

a transmitting unit, further configured to transmit the first PBPSS to the terminal; the terminal is also used for sending the first CSI-RS to the terminal; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not less than the first CSI-RS trigger offset value.

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group is a group of resources configured for the terminal by the network equipment, and any one resource in the first CSI-RS resource group is only triggered in the PBPSS.

With reference to the eighth aspect, in a second possible implementation manner of the eighth aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources related to the first trigger state group, the first trigger state group is a group of trigger states configured for the terminal by the network equipment, and any one trigger state in the first trigger state group is only indicated in the PBPSS.

With reference to the eighth aspect, in a third possible implementation manner of the eighth aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger deviation value is a second trigger deviation value, and the second trigger deviation value is configured to the terminal by the network equipment; the second trigger offset value is used only for PBPSS.

With reference to the third possible implementation manner of the eighth aspect, in a fourth possible implementation manner of the eighth aspect, the determining the first CSI-RS trigger offset value includes: the network equipment configures a second trigger offset value for the terminal; the first CSI-RS trigger offset value is the larger one of the second trigger offset value and the third trigger offset value; the third trigger offset value is the minimum K0 value indicated by the network device; the value K0 is a time slot difference between a time slot in which a PDCCH (scheduling PDCCH, SPDCCH) for scheduling data is located and a time slot in which a PDSCH (physical downlink data channel) scheduled by the SPDCCH is located.

With reference to the fourth possible implementation manner of the eighth aspect, in a fifth possible implementation manner of the eighth aspect, the determining the first CSI-RS trigger offset value includes: the first CSI-RS trigger offset value is the smaller one of the third trigger offset value and the fourth trigger offset value; and the fourth trigger offset value is the time slot difference between the time slot of the PBPSS and the OnDuration starting time slot.

With reference to the fifth possible implementation manner of the eighth aspect, in a sixth possible implementation manner of the eighth aspect, the determining the first CSI-RS trigger offset value includes: when the second trigger offset value and the third trigger offset value are both smaller than the fourth trigger offset value, the first CSI-RS trigger offset value is the larger one of the second trigger offset value and the third trigger offset value; otherwise, the first CSI-RS trigger offset value is the fourth trigger offset value.

In a ninth aspect, a communication apparatus is provided, which may be a network device or a chip or a system on a chip in a network device. The communication apparatus may implement the functions performed by the network device in the above aspects or possible designs, and the functions may be implemented by hardware, such as: in one possible design, the communication device may include: a processor and a communication interface, the processor being operable to support the communication device to implement the functionality involved in any one of the possible designs of the seventh aspect or the seventh aspect, for example: the processor is used for generating configuration information or indication information; the terminal determines a first channel state information reference signal (CSI-RS) trigger offset value according to configuration information or indication information, wherein the first CSI-RS trigger offset value is the minimum value of a time slot difference between a time slot in which a PDCCH (physical downlink control channel) based power saving signal (PBPSS) is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located; a communication interface further for sending the first PBPSS to the terminal; the terminal is also used for sending the first CSI-RS to the terminal; the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not smaller than the first CSI-RS trigger offset value; the PBPSS is used for indicating whether the terminal needs to monitor scheduling in the OnDuration before the activation period OnDuration of one discontinuous reception. In yet another possible design, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. When the communication device is operating, the processor executes the computer-executable instructions stored in the memory to cause the communication device to perform the channel state measurement parameter indication method according to any one of the possible designs of the seventh aspect or the seventh aspect.

In a tenth aspect, a computer-readable storage medium is provided, which may be a readable non-volatile storage medium, and has stored therein instructions, which when executed on a computer, enable the computer to perform the channel state measurement parameter indication method according to the seventh aspect or any one of the possible designs of the above aspects.

In an eleventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of indicating a channel state measurement parameter according to the seventh aspect or any one of the possible designs of the above aspects.

In a twelfth aspect, a communication apparatus is provided, which may be a terminal or a chip in a terminal or a system on a chip, and includes one or more processors and one or more memories. The one or more memories coupled to the one or more processors for storing computer program code comprising computer instructions which, when executed by the one or more processors, cause the communication apparatus to perform the method of channel state measurement parameter indication as set forth in any one of the possible designs of the seventh aspect or the seventh aspect.

For technical effects brought by any design manner of the ninth aspect to the twelfth aspect, reference may be made to the seventh aspect or any possible design manner of the seventh aspect, and details are not repeated.

In a thirteenth aspect, an embodiment of the present application provides a channel state measurement parameter indication system, including the terminal according to any one of the second to sixth aspects, and the network device according to any one of the eighth to twelfth aspects.

In a fourteenth aspect, the present application provides a method for indicating channel state measurement parameters, where a terminal is configured with a first CSI-RS resource group and a second CSI-RS resource group by a network device, where any one resource in the first CSI-RS resource group is triggered only in a first signal, and any one resource in the second CSI-RS resource group is triggered only in a second signal; the terminal receives a first signal sent by network equipment, and the first signal triggers the transmission of one resource in a first CSI-RS resource group; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a fifteenth aspect, the present application provides a communication device, which may be a terminal or a chip or a system on a chip in a terminal, and may also be a functional module in a terminal for implementing the method according to any possible design of the fourteenth aspect or the fourteenth aspect. The communication device may implement the functions performed by the terminal in the aspects or possible designs described above, which may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a receiving unit, a determining unit;

a receiving unit, configured to receive configuration information sent by a network device;

the determining unit is used for configuring a first CSI-RS resource group and a second CSI-RS resource group according to the configuration information received by the receiving unit, wherein any one resource in the first CSI-RS resource group is only triggered in the first signal, and any one resource in the second CSI-RS resource group is only triggered in the second signal;

the receiving unit is further configured to receive a first signal sent by the network device, where the first signal is used to trigger transmission of one resource in the first CSI-RS resource group; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a sixteenth aspect, a communication device is provided, which may be a terminal or a chip in a terminal or a system on a chip. The communication device may implement the functions performed by the terminal in the above aspects or possible designs, which may be implemented by hardware, such as: in one possible design, the communication device may include: a processor and a communications interface, the processor being operable to support a communications device to implement the functionality referred to in the first aspect above or in any one of the possible designs of the first aspect, for example: the processor can configure a first CSI-RS resource group and a second CSI-RS resource group through configuration information received by the communication interface, wherein any one resource in the first CSI-RS resource group is only triggered in a first signal, and any one resource in the second CSI-RS resource group is only triggered in a second signal; the communication interface is further used for receiving a first signal sent by the network equipment, wherein the first signal is used for triggering transmission of one resource in the first CSI-RS resource group; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a seventeenth aspect, a computer-readable storage medium is provided, which may be a readable non-volatile storage medium, and has stored therein instructions, which when executed on a computer, enable the computer to perform the channel state measurement parameter indication method according to the first aspect or any one of the above possible designs.

In an eighteenth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of indicating a channel state measurement parameter as set forth in the first aspect above or in any one of the possible designs of the above aspect.

In a nineteenth aspect, a communication device is provided, which may be a terminal or a chip or a system on a chip in a terminal, the communication device comprising one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and the one or more memories are configured to store computer program code comprising computer instructions which, when executed by the one or more processors, cause the communication apparatus to perform the channel state measurement parameter indication method as set forth in the first aspect above or any possible design of the first aspect.

For technical effects brought by any design manner in the sixteenth aspect to the nineteenth aspect, reference may be made to the technical effects brought by any possible design manner in the fourteenth aspect or the fourteenth aspect, and details are not repeated.

In a twentieth aspect, the present application provides a method for indicating channel state measurement parameters, where a network device configures, to a terminal, a first CSI-RS resource group of channel state information reference signals and a second CSI-RS resource group, where any one resource in the first CSI-RS resource group is triggered only in a first signal, and any one resource in the second CSI-RS resource group is triggered only in a second signal; a first signal sent by the network equipment to the terminal triggers the transmission of one resource in the first CSI-RS resource group; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a twenty-first aspect, the present application provides a communication apparatus, which may be a network device or a chip or a system on a chip in a network device, and may also be a functional module in a network device for implementing the method according to any one of the seventh aspect or the seventh aspect. The communication means may implement the functions performed by the network device in each of the above aspects or possible designs, which functions may be implemented by hardware executing the corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a generating unit, a transmitting unit;

a generating unit configured to generate configuration information;

the terminal configures a first CSI-RS resource group and a second CSI-RS resource group according to the configuration information, wherein any one resource in the first CSI-RS resource group is only triggered in a first signal, and any one resource in the second CSI-RS resource group is only triggered in a second signal;

the sending unit is further configured to send a first signal to the terminal, where the first signal triggers transmission of one resource in the first CSI-RS resource group; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a twenty-second aspect, a communication apparatus is provided, which may be a network device or a chip or a system on a chip in a network device. The communication apparatus may implement the functions performed by the network device in the above aspects or possible designs, and the functions may be implemented by hardware, such as: in one possible design, the communication device may include: a processor and a communication interface, the processor being operable to support the communication device to implement the functionality involved in any one of the possible designs of the seventh aspect or the seventh aspect, for example: the processor is used for generating configuration information; the terminal configures a first CSI-RS resource group and a second CSI-RS resource group according to the configuration information, wherein any one resource in the first CSI-RS resource group is only triggered in a first signal, and any one resource in the second CSI-RS resource group is only triggered in a second signal; the communication interface is further used for sending a first signal to the terminal, and the first signal triggers the transmission of one resource in the first CSI-RS resource group; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

A twenty-third aspect provides a computer-readable storage medium, which may be a readable non-volatile storage medium, having stored therein instructions, which, when run on a computer, cause the computer to perform the method for indicating a channel state measurement parameter according to the seventh aspect or any one of the above possible designs.

A twenty-fourth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of channel state measurement parameter indication according to the seventh aspect described above or any one of the possible designs of the above aspects.

In a twenty-fifth aspect, a communication device is provided, which may be a terminal or a chip or a system on a chip in a terminal, and includes one or more processors and one or more memories. The one or more memories coupled to the one or more processors for storing computer program code comprising computer instructions which, when executed by the one or more processors, cause the communication apparatus to perform the method of channel state measurement parameter indication as set forth in any one of the possible designs of the seventh aspect or the seventh aspect.

For technical effects brought by any design manner in the twenty-second aspect to the twenty-fifth aspect, reference may be made to technical effects brought by any possible design manner in the twentieth aspect or the twentieth aspect, and details are not repeated.

In a twenty-sixth aspect, an embodiment of the present application provides a channel state measurement parameter indication system, including the terminal according to any one of the fifteenth aspect to the nineteenth aspect, and the network device according to any one of the twenty-fifth aspect to the twenty-sixth aspect.

A twenty-seventh aspect, an embodiment of the present application provides a method for indicating a channel state measurement parameter, where a terminal is configured with a first trigger state group and a second trigger state group by a network device, where any trigger state in the first trigger state group is only indicated in a first signal, and any trigger state in the second trigger state group is only indicated in a second signal; the terminal receives a first signal sent by the network equipment, wherein the first signal indicates one trigger state in the first trigger state group; any one trigger state is used for triggering CSI-RS transmission; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a twenty-eighth aspect, the present application provides a communication device, which may be a terminal or a chip or a system on a chip in a terminal, and may also be a functional module in a terminal for implementing the method according to any possible design of the fourteenth aspect or the fourteenth aspect. The communication device may implement the functions performed by the terminal in the aspects or possible designs described above, which may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a receiving unit, a determining unit;

the determining unit is used for configuring a first trigger state group and a second trigger state group according to the configuration information received by the receiving unit, wherein any trigger state in the first trigger state group is only indicated in the first signal, and any trigger state in the second trigger state group is only indicated in the second signal;

the receiving unit is further configured to receive a first signal sent by the network device, where the first signal indicates one trigger state in the first trigger state group; any one trigger state is used for triggering CSI-RS transmission; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a twenty-ninth aspect, a communication apparatus is provided, which may be a terminal or a chip or a system on a chip in a terminal. The communication device may implement the functions performed by the terminal in the above aspects or possible designs, which may be implemented by hardware, such as: in one possible design, the communication device may include: a processor and a communications interface, the processor being operable to support a communications device to implement the functionality referred to in the first aspect above or in any one of the possible designs of the first aspect, for example: the processor can configure a first trigger state group and a second trigger state group through configuration information received by the communication interface, wherein any trigger state in the first trigger state group is only indicated in the first signal, and any trigger state in the second trigger state group is only indicated in the second signal; the communication interface is further used for receiving a first signal sent by the network equipment, wherein the first signal indicates one trigger state in the first trigger state group; any one trigger state is used for triggering CSI-RS transmission; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

A thirty-first aspect of the present invention provides a computer-readable storage medium, which may be a readable non-volatile storage medium, having stored therein instructions, which, when run on a computer, cause the computer to perform the method for indicating a channel state measurement parameter according to the first aspect or any one of the above-mentioned aspects.

A thirty-first aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of indicating a channel state measurement parameter as set forth in the first aspect above or in any one of the possible designs of the above aspect.

In a thirty-second aspect, a communication apparatus is provided, which may be a terminal or a chip or a system-on-a-chip in a terminal, comprising one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and the one or more memories are configured to store computer program code comprising computer instructions which, when executed by the one or more processors, cause the communication apparatus to perform the channel state measurement parameter indication method as set forth in the first aspect above or any possible design of the first aspect.

For technical effects brought by any design manner in the twenty-ninth aspect to the thirty-second aspect, reference may be made to technical effects brought by any possible design manner in the twenty-seventh aspect or the twenty-seventh aspect, and details are not repeated.

A network device configures a first trigger state group and a second trigger state group to a terminal, wherein any trigger state in the first trigger state group is only indicated in a first signal, and any trigger state in the second trigger state group is only indicated in a second signal; a first signal sent by the network device to the terminal, wherein the first signal indicates one trigger state in the first trigger state group; any one trigger state is used for triggering CSI-RS transmission; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a thirty-fourth aspect, the present application provides a communication apparatus, which may be a network device or a chip or a system on a chip in a network device, and may also be a functional module in a network device for implementing any one of the seventh aspect or any possible design of the seventh aspect. The communication means may implement the functions performed by the network device in each of the above aspects or possible designs, which functions may be implemented by hardware executing the corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a generating unit, a transmitting unit;

a generating unit configured to generate configuration information;

the terminal configures a first trigger state group and a second trigger state group according to the configuration information, wherein any trigger state in the first trigger state group is only indicated in the first signal, and any trigger state in the second trigger state group is only indicated in the second signal;

a sending unit, further configured to send a first signal to the terminal, where the first signal indicates one trigger state in the first trigger state group; any one trigger state is used for triggering CSI-RS transmission; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

In a thirty-fifth aspect, a communication apparatus is provided, which may be a network device or a chip or a system on a chip in a network device. The communication apparatus may implement the functions performed by the network device in the above aspects or possible designs, and the functions may be implemented by hardware, such as: in one possible design, the communication device may include: a processor and a communication interface, the processor being operable to support the communication device to implement the functionality involved in any one of the possible designs of the seventh aspect or the seventh aspect, for example: the processor is used for generating configuration information; the terminal configures a first trigger state group and a second trigger state group according to the configuration information, wherein any trigger state in the first trigger state group is only indicated in the first signal, and any trigger state in the second trigger state group is only indicated in the second signal; the communication interface is further used for sending a first signal to the terminal, and the first signal indicates one trigger state in the first trigger state group; any one trigger state is used for triggering CSI-RS transmission; the first signal is a power consumption saving signal based on a Physical Downlink Control Channel (PDCCH), and the second signal is a PDCCH for scheduling data transmission.

A thirty-sixth aspect provides a computer-readable storage medium, which may be a readable non-volatile storage medium, having stored therein instructions, which, when run on a computer, cause the computer to perform the method for indicating a channel state measurement parameter according to the seventh aspect or any one of the possible designs of the above aspects.

A thirty-seventh aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the seventh aspect or any one of the possible designs of the above aspects.

In a thirty-eighth aspect, a communication device is provided, which may be a terminal or a chip or a system-on-a-chip in a terminal, comprising one or more processors and one or more memories. The one or more memories coupled to the one or more processors for storing computer program code comprising computer instructions which, when executed by the one or more processors, cause the communication apparatus to perform the method of channel state measurement parameter indication as set forth in any one of the possible designs of the seventh aspect or the seventh aspect.

For technical effects brought by any design manner in the thirty-fifth aspect to the thirty-eighth aspect, reference may be made to the technical effects brought by any possible design manner in the thirty-third aspect or the thirty-third aspect, and details are not repeated.

In a thirty-ninth aspect, an embodiment of the present application provides a channel state measurement parameter indication system, including a terminal as described in any one of the twenty-eighth aspect to the thirty-second aspect, and a network device as described in any one of the thirty-fourth aspect to the thirty-eighteenth aspect.

Drawings

FIG. 1 is a schematic diagram of a C-DRX cycle;

fig. 2 is a schematic diagram of a terminal energy saving provided in an embodiment of the present application;

FIG. 3 is a diagram illustrating a PDCCH-based power saving signal used for monitoring scheduling in the prior art;

fig. 4 is a diagram illustrating a channel state measurement method in the prior art;

fig. 5 is a diagram illustrating a problem of a channel state measurement method in the prior art;

FIG. 6 is a simplified diagram of a system architecture according to an embodiment of the present application;

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

FIG. 8 is a flow chart of a communication method in the prior art;

fig. 9A is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 9B is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 10 is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 11A is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 11B is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 12 is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 13A is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 13B is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 14A is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 14B is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 14C is a schematic diagram of a channel state measurement method according to an embodiment of the present application;

fig. 15 is a schematic diagram illustrating a communication device 150 according to an embodiment of the present disclosure;

fig. 16 is a schematic diagram illustrating a communication device 160 according to an embodiment of the present disclosure;

fig. 17 is a schematic composition diagram of a channel state measurement system according to an embodiment of the present application.

Detailed Description

Before describing the embodiments of the present application, some terms referred to in the embodiments of the present application are explained to facilitate understanding of the methods provided by the embodiments of the present application:

a Physical Downlink Control Channel (PDCCH) is mainly used for carrying Downlink Control Information (DCI), and the DCI may include common control information (e.g., system information) and user-specific information (e.g., downlink resource allocation indication, uplink scheduling, random access response, uplink power control parameter, etc.). The PDCCH may schedule data channels through the DCI it carries, such as: the DCI may be used to indicate a transmission parameter of a data channel (e.g., a time domain resource location of the data channel, etc.), before the data channel is transmitted, the network device may send the PDCCH to the terminal, and after the terminal receives the PDCCH, the terminal may first demodulate the DCI in the PDCCH and then transmit the data channel on the time domain resource location indicated by the DCI.

A data channel, which may be used to carry data. In the 3GPP protocol, data channels are divided into: a Physical Uplink Shared Channel (PUSCH) (alternatively referred to as an uplink data channel) and a physical downlink channel (PDSCH) (alternatively referred to as a downlink data channel). The PUSCH is used to carry data (or referred to as uplink data) transmitted from the terminal to the network device, and the PDSCH is used to carry data (or referred to as downlink data) transmitted from the network device to the terminal.

Further, the PDCCH may also trigger transmission of an aperiodic channel state information reference signal (aperiodic CSI-RS) through the DCI carried by the PDCCH, and/or the PDCCH may trigger transmission of an aperiodic Sounding Reference Signal (SRS) through the DCI carried by the PDCCH. Taking PDCCH triggering sending of CSI-RS as an example, the network device may send PDCCH to the terminal, DCI carried by PDCCH is used to trigger sending of CSI-RS, after the terminal receives PDCCH, the terminal may demodulate DCI in PDCCH, determine triggered CSI-RS resource according to triggerring state (trigger state) indicated by DCI, determine time domain resource position of the resource according to configuration information of the resource, and finally receive CSI-RS sent by the network device at the corresponding time domain resource position.

And the CSI-RS is used for the terminal to measure the channel state between the terminal and the network equipment, and can comprise one or more channel state measurement resources. For example, the network device may send DCI for triggering the CSI-RS to the terminal, and the terminal determines the triggered CSI-RS resource according to the triggerering state indicated by the DCI, and determines the time domain resource location of the resource according to the configuration information of the resource. The terminal receives and receives the CSI-RS sent by the network equipment according to the time domain resource position of the CSI-RS, measures the channel state measurement resource included by the CSI-RS, and reports Channel State Information (CSI) to the network equipment according to the measurement result.

And the SRS is used for the network equipment to measure the channel information between the network equipment and the terminal. Such as: the network device may send DCI for triggering the SRS to the terminal, where the terminal determines a time domain resource position of the triggered SRS resource according to a triggerring state indicated by the DCI, and sends the SRS to the network device through a part or all of antennas of the terminal at the time domain resource position of the SRS. And the network equipment receives the SRS and measures the channel information between the SRS and the terminal according to the received SRS.

Wherein one PDCCH may occupy one or more symbols within one slot (slot). The time slot occupied by the PDCCH, the initial position of the symbols occupied by the PDCCH in the time slot and the number of the symbols are not limited in the embodiment of the application.

Discontinuous Reception (DRX) may be referred to as connected discontinuous reception (C-DRX). The C-DRX basic principle is that a terminal in an RRC _ CONNECTED state is configured with one C-DRX cycle (cycle). FIG. 1 is a diagram illustrating a C-DRX cycle, which may be composed of an active period "On Duration" and a sleep period "Opportunity for DRX" as shown in FIG. 1. In the "On Duration" time, the terminal monitors and receives a Physical Downlink Control Channel (PDCCH); during the "Opportunity for DRX" time, the terminal does not receive the PDCCH to reduce power consumption. The cycle size of the C-DRX and the lengths of the active period and the dormant period are configured to the terminal by the network equipment.

Optionally, when the PDCCH is used for scheduling a data channel, the network device configures a scheduling information monitoring opportunity (scheduling information monitoring opportunity) for the terminal in advance, and the terminal starts to monitor the PDCCH when the scheduling information monitoring opportunity configured by the network device arrives. The scheduling information monitoring occasion may be periodically configured to the terminal, so that the terminal periodically monitors the PDCCH.

The time slot occupied by the PDCCH may be the same as or different from the time slot occupied by the data channel scheduled by the PDCCH and/or the triggered reference signal. In the 3GPP protocol, according to the conditions of the time slot occupied by the PDCCH and the time slot occupied by the data channel scheduled by the PDCCH and/or the triggered reference signal, the scheduling mode of the terminal is divided into: simultaneous slot scheduling (single slot scheduling), cross-slot scheduling (cross-slot scheduling). The simultaneous slot scheduling may mean that the PDCCH and the scheduled data channel and/or the triggered reference signal thereof are located in the same time slot, and the cross-slot scheduling may mean that the PDCCH and the scheduled data channel and/or the triggered reference signal thereof are located in different time slots, for example:

when the PDCCH is used for scheduling the PDSCH, the PDCCH and the PDSCH scheduled by the PDCCH may be in the same time slot, i.e., in the same time slot scheduling, or in different time slots, i.e., in the cross-slot scheduling. In the 3GPP protocol, it is indicated by the value of K0 that the PDCCH and its scheduled PDSCH are scheduled simultaneously or across slots. The value K0 is a time slot difference between a time slot occupied by the PDCCH and a time slot occupied by the PDSCH scheduled by the PDCCH, and the value K0 has a value set, and the value set is configured to the terminal by the network device through RRC signaling, and may be {0,1,2 … }, for example. If K0 is 0, it means that PDCCH and PDSCH are in the same time slot, i.e. "simultaneous slot scheduling". If K0>0, it indicates that the PDCCH is not in the same time slot as the PDSCH, i.e., "cross-slot scheduling". The network device may directly indicate the value K0 to the terminal, or configure a Time Domain Resource Allocation (TDRA) table for the terminal, where the TDRA table includes an index value (index) and a K0 value corresponding to the index value, and the network device may indirectly indicate the value K0 to the terminal by indicating the index value to the terminal.

For example, the following table one is a schematic diagram of a TDRA table configured by the network device for the terminal when the PDCCH schedules the PDSCH, where the TDRA table includes a corresponding relationship between an index value and a K0 value, and as shown in table one, when the index value is 0, the K0 value is 0; when the index value is 1, the value of K0 is 1; when the index value is 2, the value of K0 is 2. When the network device schedules the PDSCH to the terminal through the PDCCH, the network device may configure a TDRA table shown in table one to the terminal, and subsequently, if the network device indicates an index value 1 to the terminal, the terminal may look up table one by taking the index value as 1 as an index, and determine that the K0 value corresponding to the index value 1 is 1, and the PDCCH and the PDSCH are in different time slots, that is, cross-slot scheduling.

Watch 1

Index value (index)	K0 value
		0	0
1	1
		2	2

When the PDCCH is used for scheduling the PUSCH, the PDCCH and the scheduled PUSCH may be in the same time slot, i.e., in the same time slot scheduling, or in different time slots, i.e., in the cross-slot scheduling. In the 3GPP protocol, it is indicated by the value of K2 that the PDCCH is scheduled with its scheduled PUSCH in a simultaneous slot scheduling or a cross-slot scheduling. The value K2 is a time slot difference between a time slot occupied by the PDCCH and a time slot occupied by the scheduled PUSCH, the value K2 has a value set, the value set is configured to the terminal by the network device, for example, the value set may be {0,1,2 … }, and if K2 is 0, it indicates that the PDCCH and the PUSCH are in the same time slot, that is, "simultaneous slot scheduling". If K2>0, it indicates that PDCCH and PUSCH are not in the same time slot, i.e. "cross-slot scheduling". The network device may directly indicate the value K2 to the terminal, or the network device configures a TDRA table for the terminal, where the TDRA table includes an index value (index) and a value K2 corresponding to the index value, and the network device may indirectly indicate the value K2 to the terminal by indicating the index value to the terminal.

For example, the following table two is a schematic diagram of a TDRA table configured by the network device for the terminal when the PDCCH schedules the PUSCH, where the TDRA table includes a corresponding relationship between an index value and a K2 value, and as shown in table two, when the index value is 0, the K2 value is 0; when the index value is 1, the value of K2 is 2. When the network device schedules the PUSCH to the terminal through the PDCCH, the network device may configure a TDRA table shown in table two to the terminal, and subsequently, if the network device indicates an index value 1 to the terminal, the terminal may use the index value 1 as an index, look up table two, determine that a K2 value corresponding to the index value 1 is 2, the PDCCH and the PDSCH are in different time slots, and the difference between the PDCCH and the PDSCH is 2 time slots, that is, cross-slot scheduling.

Watch two

Index value (index)	K2 value
		0	0
1	2

It should be noted that the table one and the table two are only exemplary tables, and besides the contents shown in the tables, the table one and the table two may also include other contents, such as: start and length indication values (starting and length indication values), mapping types (mapping types), and the like may also be included, which is not limited in the present application.

When the PDCCH is used for triggering the CSI-RS, the PDCCH and the CSI-RS triggered by the PDCCH may be in the same time slot or may be in different time slots. In the 3GPP protocol, it is determined that the PDCCH is in the same time slot or in a different time slot from the CSI-RS triggered by the PDCCH through an aperiodic CSI-RS trigger offset (triggering offset). The aperiodic CSI-RS trigger offset value is a time slot difference between a time slot occupied by the PDCCH and a time slot occupied by the CSI-RS scheduled by the PDCCH, the aperiodic CSI-RS trigger offset value can be configured to the terminal by network equipment, and if the aperiodic CSI-RS trigger offset value is equal to 0, the PDCCH and the CSI-RS triggered by the PDCCH are in the same time slot. And if the aperiodic CSI-RS trigger offset value is larger than 0, indicating that the PDCCH and the CSI-RS triggered by the PDCCH are in different time slots.

When the PDCCH is used to trigger the SRS, the PDCCH and the triggered SRS may be in the same time slot or in different time slots. In the 3GPP protocol, it is determined that the PDCCH is in the same time slot or in a different time slot from the SRS triggered by the PDCCH through an aperiodic SRS triggering offset value (triggering offset). The aperiodic SRS triggering offset value is a time slot difference between a time slot occupied by the PDCCH and a time slot occupied by the scheduled SRS, the aperiodic SRS triggering offset value can be configured to the terminal by the network equipment, and if the aperiodic SRS triggering offset value is equal to 0, the PDCCH and the triggered SRS are in the same time slot. If the aperiodic SRS trigger offset value is larger than 0, the PDCCH and the triggered SRS are in different time slots.

Currently, in order to achieve the purpose of reducing the power consumption of the terminal, optimization can be performed from two aspects: firstly, when a service load exists (namely data needs to be transmitted), the data transmission efficiency is improved; and secondly, when no traffic load exists (namely no data needs to be transmitted), the energy consumption of the terminal is reduced. For the second point, it is mentioned in a report of international telecommunication union-radio communication sector (ITU-R), that the purpose of reducing the energy consumption of the terminal can be achieved by increasing the proportion of the terminal in the sleep state.

For example, as shown in fig. 2, during an On Duration of one C-DRX, the terminal receives the PDCCH during a period t1, as shown in the left side of fig. 2, if the terminal does not know whether there is simultaneous slot scheduling in the current slot (simultaneous slot scheduling may exist as long as K0 is 0 in the TDRA table configured by the network device), in order to avoid data and/or signal loss, the terminal must buffer data and/or signals while decoding the PDCCH after receiving the PDCCH, and as shown in the left side of fig. 2, during a period t2, the terminal needs to turn On its radio frequency module at all times to buffer data and/or signals. If the terminal can know that the time slot between the PDCCH and the data channel is the cross-time-slot scheduling in advance, and the data channel scheduled by the PDCCH and/or the triggered reference signal do not exist in the current time slot as shown in the right side of fig. 2, the terminal may close its radio frequency module and does not buffer any data and/or signal in the process of decoding the PDCCH after receiving the PDCCH, so as to achieve the effect of saving energy, and a shaded part corresponding to a part t2 time period shown in the right side of fig. 2 is the energy saved by the terminal.

As can be seen from the above, when the terminal has no data traffic, the terminal should be in the "cross-slot scheduling" state to save power consumption (provided that all K0 satisfy K0> 0); when a data service arrives at the terminal, the terminal should be in a "simultaneous slot scheduling" state to ensure that data is transmitted quickly and completely and reduce time delay. In order to enable the scheduling mode of the terminal to be capable of quickly matching the current service type of the terminal, a dynamic signaling may be used to indicate the switching of the scheduling mode, such as: a subset of "valid" in the TDRA table is indicated. For example, there are 3 rows in the table, where the first row is K0 ═ 0 and the last two rows are K0> 0. Only the last two rows may be indicated as valid. Alternatively, the network device implements configuration of multiple TDRA tables, dynamically indicating which table is "valid". For example, two tables are provided, where K0 ═ 0 is present in the first table, and K0 satisfies K0 ═ 2 in the second table. Alternatively, the network device dynamically indicates a minimum value of K0. Such as dynamic indicator K0 being a minimum of 3, etc.

Since a 5G NR (new radio) system needs to support a larger bandwidth, a higher transmission rate, and a wider coverage than a 4G LTE (Long Term Evolution) system, the power consumption of the NR terminal is larger than that of the LTE terminal. In order to ensure good user experience, 3GPP (3rd Generation Partnership Project) has made a special Project in Rel-16 for the problem of saving power consumption of a terminal, and studies an optimization scheme for reducing the power consumption of the terminal.

The power saving topic is as follows: the network device may send a power saving signal/channel based On a Physical Downlink Control Channel (PDCCH) to the terminal, as shown in fig. 3, where the power saving signal based On the PDCCH may be before an On Duration of one C-DRX, and the power saving signal may be used to indicate that the terminal is in a sleep state or an awake state in a discontinuous reception (C-CRX) cycle (cycle) in a next connection state or connection states; the solid-line boxes in fig. 3 represent the On Duration with the terminal in the awake state, and the dotted-line boxes represent the On Duration with the terminal in the sleep state. After receiving the power saving signal, the terminal may be in a sleep state or in an awake state according to an indication of the power saving signal, so that some circuits of the terminal are turned off in the sleep state to achieve the purpose of reducing energy consumption of the terminal.

In addition to this, the above-mentioned "PDCCH-based power consumption saving signal" may also be used to instruct other functions, such as instructing the terminal to make CSI (channel state) measurements. As shown in fig. 4, the PDCCH-based power saving signal may trigger an aperiodic CSI-RS and a CSI report. Through CSI measurement and reporting, the network device can know the specific state of the downlink channel, and thus can use more appropriate parameters (such as MCS (modulation and coding scheme), precoding matrix, etc.) for scheduling in the On Duration, thereby improving transmission efficiency and transmission speed. Therefore, the terminal can enter a short-time dormant state after the terminal rapidly receives/sends the data, and power consumption is saved.

As can be seen from the above, the slot difference between the slot occupied by the PDCCH and the slot occupied by the CSI-RS triggered by the PDCCH can be determined by the aperiodic CSI-RS trigger offset (triggering offset). As shown in fig. 5, if the triggering offset of the CSI-RS configured by the network device is too small, in order to avoid data and/or signal loss, after the terminal receives the PDCCH-based power consumption saving signal, it is necessary to turn on its radio frequency module at any time to buffer the CSI-RS signal, while decoding the PDCCH-based power consumption saving signal, so as to cause waste of terminal power consumption. In order to solve the problem, an embodiment of the present application provides a method for indicating a channel state measurement parameter, where a first CSI-RS trigger offset value is determined for a PDCCH-based power consumption saving signal, so that a time slot difference between a time slot in which the PDCCH-based power consumption saving signal is located and a time slot in which an aperiodic CSI-RS triggered by the PDCCH is located is not smaller than the first CSI-RS trigger offset value. Since the first CSI-RS trigger offset value is less than or equal to a slot difference between a slot where the PDCCH-based power consumption saving signal is located and a slot where the aperiodic CSI-RS triggered by the PDCCH is located, the first CSI-RS trigger offset value may be understood as a minimum slot difference between a slot where the PDCCH-based power consumption saving signal is located and a slot where the aperiodic CSI-RS triggered by the PDCCH is located, so that the first CSI-RS trigger offset value determined for the PDCCH-based power consumption saving signal may also be referred to as a minimum CSI-RS triggering offset value (minimum CSI-RS triggering offset), where a value of the minimum CSI-RS trigger offset value may be {0,1,2 … }. When the minimum CSI-RS trigger offset value offset1 is greater than zero, the terminal may know explicitly that: the network device does not transmit the CSI-RS signal for 1 slots of offset after the slot in which the network device transmits the PDCCH-based power consumption saving signal, and the terminal does not need to buffer data during this time, so the terminal can turn off the radio frequency module to save power consumption. And the terminal can decode the PDCCH-based power consumption saving signal in this time range, and when the offset1 is set to be large enough, the terminal can slow down the decoding speed, reduce the processing voltage, and thus save power consumption. After the terminal successfully decodes the power consumption saving signal, the terminal can know the specific time slot where the CSI-RS triggered by the power consumption saving signal is located, so that the actual time slot where the power consumption saving signal triggers the CSI-RS is used for receiving the CSI-RS. In an actual scenario, there may be a case where the offset1 is 0, and at this time, although the effect of saving power consumption for the terminal cannot be achieved, the network device may trigger the transmission of the CSI-RS more quickly, so that the terminal receives the reference signal as soon as possible, thereby achieving faster channel tracking or beam management.

It should be noted that, in the embodiments of the present application, the first CSI-RS trigger offset value, the minimum CSI-RS trigger offset, and the offset1 all refer to the same meaning, and only refer to different expressions in different scenarios.

The following describes in detail a channel state measurement method provided in an embodiment of the present application with reference to the accompanying drawings.

Channel state measurement provided by the embodiment of the applicationThe method can be used for a communication system supporting various scheduling modes, such as: can be applied to the fourth generation (4)^thgeneration, 4G) system, Long Term Evolution (LTE) system, fifth generation (5th generation, 5G) system, New Radio (NR) system, and any of the vehicle-to-any communication (V2X) systems, and may be applied to other next-generation communication systems, and the like, without limitation. The method provided by the embodiment of the present application is described below by taking the communication system shown in fig. 6 as an example.

Fig. 6 is a schematic diagram of a communication system according to an embodiment of the present application, and as shown in fig. 6, the communication system may include a network device and a plurality of terminals (e.g., terminal 1, terminal 2). The terminal can be located in the coverage area of the network equipment and connected with the network equipment. In the system shown in fig. 6, the terminal may receive a PDCCH-based power saving signal transmitted by the network device, and determine whether the terminal is in a sleep state or an awake state in a discontinuous reception period in the next one or more connection states under an indication of DCI included in the PDCCH-based power saving signal, or receive an aperiodic CSI-RS transmitted by the network device or transmit an SRS to the network device under an indication of DCI included in the PDCCH-based power saving signal, or the like.

The network device in fig. 6 is mainly used to implement functions of resource scheduling, radio resource management, radio access control, and the like of the terminal. Specifically, the network device may be AN Access Network (AN)/Radio Access Network (RAN) device, or a device composed of multiple 5G-AN/5G-RAN nodes, or may be any one of a network device (nodeB, NB), AN evolved node b (eNB), a next generation network device (gNB ), a transmission point (TRP), a Transmission Point (TP), a roadside unit (RSU), and some other access node, which is not limited. In this embodiment of the application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus or a functional module, such as a system on chip, capable of supporting the network device to implement the function. The following describes a channel state measurement method provided in an embodiment of the present application, by taking a device for implementing a function of a network device as an example.

The terminal in fig. 6 may be a terminal equipment (terminal equipment), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like. Such as: the terminal in fig. 6 may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiving function, and may also be a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city (smart city), a smart home, a vehicle-mounted terminal, and the like. In the embodiment of the present application, the apparatus for implementing the function of the terminal may be the terminal, or may be an apparatus capable of supporting the terminal to implement the function, such as a chip system. The following describes a channel state measurement method provided in an embodiment of the present application, by taking a device for implementing a function of a terminal as an example.

In the system shown in fig. 6, in order to save the power consumption of the terminal to the maximum extent, the terminal first determines the minimum CSI-RS trigger offset value, and then the terminal receives a power saving signal (power saving signal) sent by the network device and based on the PDCCH to trigger an aperiodic CSI-RS measurement, and the time slot from which the network device sends the power saving signal based on the PDCCH to the time slot which triggers the sending of the aperiodic CSI-RS signal is not necessarily smaller than the minimum CSI-RS trigger offset value, so that the terminal does not need to buffer data in this period of time, and can close its radio frequency module, thereby achieving the purpose of saving energy. Meanwhile, after the power consumption saving signal based on the PDCCH is successfully decoded, the terminal can know the specific time slot of the CSI-RS triggered by the power consumption saving signal based on the PDCCH, so that the actual time slot is used for receiving the CSI-RS.

It should be noted that fig. 6 is only an exemplary framework diagram, the number of nodes included in fig. 6 is not limited, and the communication system shown in fig. 6 may include other nodes besides the functional nodes shown in fig. 6, such as: core network devices, gateway devices, application servers, etc., without limitation.

In a specific implementation, the terminal and the network device shown in fig. 6 may adopt the component structure shown in fig. 7 or include the components shown in fig. 7.

Fig. 7 is a schematic composition diagram of a communication apparatus 700 according to an embodiment of the present disclosure, where the communication apparatus 700 may be a terminal or a chip or a system on a chip in the terminal, and is used to implement the method for indicating a channel state measurement parameter according to the embodiment of the present disclosure. The communication device 700 may include a processor 701, a communication link 702, and a communication interface 703. Further, the communication device 700 may also include a memory 704. The processor 701, the memory 704, and the communication interface 703 may be connected by a communication line 702.

The processor 701 may be a Central Processing Unit (CPU), a general purpose processor Network (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor 701 may also be other means with processing functionality such as a circuit, a device, or a software module.

Communication lines 702 are used to communicate information between the various components included in communication device 700.

A communication interface 703 for communicating with other devices or other communication networks. The other communication network may be an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), or the like. Communication interface 703 may be a module, a circuit, a transceiver, or any device capable of enabling communication.

A memory 704 for storing instructions. Wherein the instructions may be a computer program.

Wherein the memory 704 may be a read-only memory (ROM) or other type of static storage device that may store static information and/or instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and/or instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

It is to be noted that the memory 704 may exist separately from the processor 701 or may be integrated with the processor 701. The memory 704 may be used for storing instructions or program code or some data etc. The memory 704 may be located within the communication device 700 or may be located outside the communication device 700, without limitation.

The processor 701 is configured to execute the instructions stored in the memory 704 to implement the scheduling switching method provided in the following embodiments of the present application. For example, when the communication apparatus 700 is a terminal or a chip or a system on a chip in a terminal, the processor 701 may execute instructions stored in the memory 704 to implement the steps performed by the terminal in the embodiments described below in the present application. As another example, when the communication apparatus 700 is a functional entity or a chip or a system on a chip in a functional entity, the processor 701 may execute instructions stored in the memory 704 to implement the steps performed by the functional entity in the embodiments described below in the present application.

In one example, processor 701 may include one or more CPUs, such as CPU0 and CPU1 in fig. 7.

As an alternative implementation, the communication apparatus 700 may comprise a plurality of processors, for example, the processor 707 may be included in addition to the processor 701 in fig. 7.

As an alternative implementation, the communication apparatus 700 further comprises an output device 705 and an input device 706. Illustratively, the input device 706 is a keyboard, mouse, microphone, or joystick-like device, and the output device 705 is a display screen, speaker (spaker), or like device.

It should be noted that the communication device 700 may be a general-purpose device or a special-purpose device. For example, the communication apparatus 700 may be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device having a similar structure as in fig. 7. Further, the constituent structure shown in fig. 7 does not constitute a limitation of the communication apparatus, and the communication apparatus may include more or less components than those shown in fig. 7, or combine some components, or a different arrangement of components, in addition to the components shown in fig. 7.

In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

In addition, acts, terms, and the like referred to between the embodiments of the present application may be mutually referenced and are not limited. In the embodiment of the present application, the name of the message exchanged between the devices or the name of the parameter in the message, etc. are only an example, and other names may also be used in the specific implementation, which is not limited. For example, the offset2 in the following embodiments can also be described as a second trigger offset value, etc., without limitation.

The following describes a method for indicating a channel state measurement parameter according to an embodiment of the present application, with reference to the communication system shown in fig. 6. Each device mentioned in the following method embodiments may have a component shown in fig. 7, and is not described again. In addition, in the following embodiments of the present application, names of messages exchanged between network elements or names of parameters in the messages are only an example, and other names may also be used in a specific implementation. In addition, "offset 1" and "offset 2" in the embodiment of the present application are values for distinguishing CSI-RS trigger offset values in different scenarios, and are not used for describing a specific order of objects.

The following describes a channel state measurement method provided in the embodiment of the present application with reference to the communication system shown in fig. 6.

Fig. 8 is a signaling interaction flow diagram of a network device triggering CSI-RS and a terminal reporting CSI in the prior art, and as shown in fig. 8, the method may include:

step 801: the network device generates configuration information.

Step 802: and the network equipment configures the aperiodic CSI-RS resource for the terminal.

And indicating the configuration of the CSI-ResourceConfig in the RRC signaling configuration IE, and configuring the recourceType in the CSI-ResourceConfig as aperiodic.

Step 803: the network equipment configures a group of trigger state for the terminal.

Through IE, CSI-SemiPersistentOnPCH-TriggerStateList configures a group of trigger states, wherein each trigger state can be associated with one CSI reporting configuration CSI-report configuration, and each CSI-report configuration can be associated with one or more CSI-RS resources.

Step 804: the network device generates a PDCCH for scheduling PUSCH.

In the prior art, a network device triggers a CSI-RS signal, and can only indicate in a PDCCH for scheduling an uplink data PUSCH.

Step 805: the network device sends a PDCCH that schedules PUSCH indicating a trigger state.

The network equipment transmits a field in DCI in a PDCCH for scheduling PUSCH, and indicates an index of a trigger state.

Step 806: and the terminal receives and analyzes the PDCCH for scheduling the PUSCH.

Step 807: the network device generates a corresponding CSI-RS signal.

Step 808: and the network equipment sends corresponding CSI-RS according to the instruction of the PDCCH for scheduling the PUSCH.

The CSI-RS is triggered by a field called CSI request in scheduling DCI.

Step 809: and the terminal receives the CSI-RS according to the relevant configuration corresponding to the trigger state, performs channel estimation and generates CSI report information.

Step 810: and the terminal sends CSI report information to the network equipment.

The CSI reporting information is carried in the scheduled PUSCH.

Step 811: and the network equipment analyzes the CSI report information and determines the scheduling parameters of the subsequent PDSCH.

In the prior art, before a network device triggers a CSI-RS signal through a PDCCH, the network device configures an aperiodic CSI-RS resource and a set of trigger states for a terminal, where each trigger state is associated with one CSI report configuration CSI-ReportConfig, and each CSI-ReportConfig is associated with one or more CSI-RS resources.

For example, in the prior art, the process of triggering the CSI-RS resource by the network device may be:

the network equipment configures a group of 5 CSI-RS resources with index of 0-4 to the terminal through RRC signaling;

the network equipment configures a group of triggerring states for the terminal through RRC signaling, wherein the state 0 is associated with three resources with index of 0-2, and the state 1 is associated with two resources with index of 3-4;

the network equipment sends DCI for scheduling data transmission to the terminal, wherein the DCI has a field for indicating that triggerring state is 1, and then the network equipment sends two CSI-RS resources with index of 3-4 to the corresponding position.

In the first embodiment of the present application, on the basis of the prior art, the network device configures a special resource for the CSI-RS triggered by the power consumption saving signal based on the PDCCH, so that the offset between the power consumption saving signal based on the PDCCH and the aperiodic CSI-RS triggered by the power consumption saving signal is large enough, and unnecessary signal reception is avoided, thereby achieving the purpose of saving energy.

Specifically, the following modes 1 to 3 may be referred to for the implementation of the network device configuring the CSI-RS resource.

The first method is as follows: a set of CSI-RS resources is defined and can indicate a trigger only in a PDCCH-based power saving signal and not in a PDCCH scheduling data transmission (scheduling).

Illustratively, the power saving signal may be a wake-up signal (WUS), i.e., a PDCCH that is transmitted before the On Duration of one C-DRX and that indicates whether the terminal needs to monitor scheduling data for the next C-DRX period or periods. The special CSI-RS resource configured for the terminal by the network equipment can be defined as AP-CSI-RS-resource set-ForPowerSaving. The network equipment configures 10 resources with index of 0-9 for the terminal, wherein the index of 0-6 indicates a normal CSI-RS (i.e., a CSI-RS that can be triggered by a PDCCH for scheduling data according to the prior art), and the offset is {0,1,2 }; index 7-9 indicates AP-CSI-RS-resources set-forpowersave, offset3, 4, 5. In a scheduling data transmission PDCCH, only resources with index of 0-6 can be triggered; in the power consumption saving signal based on the PDCCH, only resources with index of 7-9 can be triggered. If resources with index 7-9 are already configured before the network device enables the function of power saving signal, the resources cannot be indicated or used.

Optionally, before the network device sends the configuration information to the terminal, the terminal may report the expected "minimum CSI-RS trigger offset value" to the network device, which is exemplarily represented by offset 1.

The second method comprises the following steps: configuration information defining the AP-CSI-RS-resource set-ForPowerSaving, AP-CSI-RS-resource set-ForPowerSaving is included in enable information of the PDCCH-based power consumption saving signal.

For example, the PDCCH-based power consumption saving signal may be configured in the following manner:

the signaling therein is explained as follows: the PowerSavingConfig is configuration signaling for enabling a power saving function of the terminal, and includes configuration signaling PowerSavingSignalConfig based on a power saving signal of the PDCCH.

In PowerSavingSignalConfig, the following may be included:

searchspace index: monitoring an index value of a search space of the "power saving signal", that is, in which search space the "power saving signal" is to be monitored;

indica tedfunctions: the "power saving signal" may include at least "indicating whether or not to monitor scheduling in the On Duration" and "may include" whether or not to trigger aperiodic CSI-RS measurement ". In the present embodiment, both functions are present.

The AP-CSI-RS-ResourceSet-ForPowerSaving configures a set of resources for the PDCCH-based power saving signals for the network device.

AP-CSI-RS-Resources-ForPowerSaving is a specific set of resource configurations, where each configuration may include UsedSequence (sequence used) and offset values, among others.

aperiodtriggering offset INTEGER (0.. 6): for the configured offset value, optionally, before the network device sends the configuration information to the terminal, the terminal may report the expected "minimum CSI-RS trigger offset value" to the network device. As long as the configured offset value is large enough, it can be ensured that the terminal can decode successfully in the offset slots after the PDCCH slot.

The third method comprises the following steps: the enabling information of the power consumption saving signal based on the PDCCH comprises associated information which is associated to the configuration information of the AP-CSI-RS-resource set-ForPowerSaving.

AP-CSI-RS-Resources-ForPowersaving SEQUENCE OF resource ID: and associating the configuration information to the AP-CSI-RS-resource set-ForPowerSaving through resource ID.

AP-CSI-RS-Resource-ForPowerSaving: contains configuration information of AP-CSI-RS-resource set-For Power saving.

In summary, in the first embodiment, the network device may configure a dedicated resource for the PDCCH-based power saving signal-triggered CSI-RS through any one of the above manners, so that the offset between the PDCCH-based power saving signal and the aperiodic CSI-RS triggered by the PDCCH-based power saving signal is sufficiently large. For the terminal, since the terminal knows that the network device does not definitely trigger the transmission of the CSI-RS before the offset slot after the slot where the PDCCH-based power consumption saving signal is located, the terminal may not buffer data for this period of time, thereby achieving the purpose of saving energy. In the offset time slots after the time slot in which the power saving signal based on the PDCCH is located, the terminal can decode the power saving signal based on the PDCCH, and a larger offset value can slow down the decoding speed of the terminal, reduce the processing voltage, and thus save power consumption. After the terminal successfully decodes the DCI of the power consumption saving signal, the specific time slot where the CSI-RS triggered by the power consumption saving signal is located can be known, so that the actual time slot where the power consumption saving signal triggers the CSI-RS is used for receiving the CSI-RS.

In the second embodiment of the present application, the network device defines a special triggering state (triggering state) for the PDCCH-based CSI-RS triggered by the power consumption saving signal.

Referring to fig. 8, in the prior art, a CSI-RS is triggered by a field called CSI request in scheduling DCI. This field does not actually indicate the CSI-RS resource directly, but indicates a CSI triggerring state. The network equipment configures a group of CSI triggerering states for the terminal through the parameter of the CSI-Aperiodic triggerStateList, and each CSI triggerring state is associated with a certain CSI-RS resource and CSI reporting configuration. When the network equipment triggers one CSI measurement, the terminal determines the CSI-RS resource needing to be received according to the triggerring state indicated by the network equipment, and reports the relevant configuration of the CSI feedback information. In the prior art, a network device configures at most one set of triggerering states for a terminal.

In the method of this embodiment, a new set of trigger states is defined for the CSI-RS triggered by the PDCCH-based power consumption saving signal, and the configuration signaling may be called CSI-aperiodictriggerstatistefropwersave, for example.

Illustratively, the network device configures 10 resources with index 0-9, wherein index 0-6 is CSI-RS with offset 0; index 7-9 is CSI-RS with offset1, and is defined as follows:

when the triggering state is indicated to be 0 in the PDCCH, if the PDCCH is a PDCCH for scheduling data transmission, the triggered CSI-RS with index being 0 is triggered; if the PDCCH is a "power consumption saving signal based on PDCCH", a CSI-RS with index of 7 is triggered.

The difference from the prior art is that in this embodiment, if the triggering state indicated by the scheduling DCI is 0, the CSI-RS resource corresponding to the trigger state 0 configured by the parameter CSI-AperiodicTriggerStateList is triggered, and the relevant configuration for reporting the CSI feedback information is reported; if the triggerring state indicated by the power consumption saving signal based on the PDCCH is 0, triggering CSI-RS resources corresponding to a trigger state 0 configured by the parameter CSI-Aperiodic triggerStateListForPowerSaving, and reporting relevant configuration of CSI feedback information.

Optionally, before the network device sends the configuration information to the terminal, the terminal may report an expected "minimum CSI-RS trigger offset value" to the network device.

In the third embodiment of the present application, both the CSI-RS and the triggerring state are configured according to the prior art, that is, the PDCCH for scheduling data transmission and the configuration of CSI measurement triggered by the power consumption saving signal based on the PDCCH are configured in the same set. In order to ensure that the triggering offset is large enough, the network device configures a second CSI-RS trigger offset value for the terminal, that is, the minimum CSI-RS trigger offset value is the second trigger offset value, and the second CSI-RS trigger offset value can only be used when the aperiodic CSI-RS signal is triggered in the power consumption saving signal based on the PDCCH, and cannot be used when the aperiodic CSI-RS signal is triggered by the PDCCH for scheduling data transmission.

For example, as shown in fig. 9A, the network device configures a second CSI-RS trigger offset value of offset2 ═ 1 for the terminal, the power saving signal is wake-up signal (WUS), and the time slot where the WUS triggered reference signal is located is the 1 st time slot and the following time slot after the time slot where the WUS DCI is located. For the terminal, the terminal knows that the network equipment does not trigger the sending of the CSI-RS before the 1 st time slot after the time slot of the WUS DCI, so the terminal can not buffer data in the period of time, and the aim of saving energy is fulfilled. After the terminal successfully decodes the WUS DCI, the terminal can know the specific time slot where the CSI-RS triggered by the WUS is located, so that the actual time slot where the WUS triggers the CSI-RS is used for receiving the CSI-RS.

Further, the larger the offset2, the slower the processing speed of the terminal to decode the WUS PDCCH can be, which means that the terminal consumes less power. The WUS DCI decoding is guaranteed to be successful before the minimum trigger offset and DRX On Duration of the WUS trigger RS.

In the prior art, in order to avoid power consumption waste caused by the fact that a terminal needs to always open a radio frequency module because the terminal does not know whether a current time slot is scheduled or not. The network device may configure, through RRC signaling, an "available minimum value" of "K0/K2/CSI-RS trigger offset value/SRS trigger offset value" for the terminal semi-statically, that is, a minimum K0 value (minimum K0), a minimum K2 value (minimum K2), a minimum Aperiodic CSI-RS trigger offset value (minimum Aperiodic CSI-RS triggering offset), or a minimum Aperiodic SRS trigger offset value (minimum Aperiodic SRS triggering offset). These "minimum available values" may be configured for each cell, or may be configured for each BWP (Bandwidth part).

The difference from the "minimum value currently available" in the prior art, in which the existing network device semi-statically configures or dynamically indicates "K0/K2/CSI-RS trigger offset value/SRS trigger offset value" for the terminal RRC, is that the minimum CSI-RS trigger offset value in this embodiment is only used for the PDCCH-based power consumption saving signal, and is not used for the PDCCH for scheduling data transmission.

Alternatively, the value of offset2 may be configured in the configuration information of the PDCCH-based power consumption saving signal.

Optionally, before the network side sends the configuration information to the terminal, the terminal may report an expected "minimum CSI-RS trigger offset value" to the network side.

In some cases, in order to achieve faster channel tracking, the terminal needs the network device to be able to quickly trigger the CSI-RS to perform channel state testing, and at this time, the value of offset2 may be smaller than the time for the terminal to decode the WUS DCI, so before decoding succeeds, the network device still needs to trigger CSI-RS transmission according to the position indicated by offset2, and at this time, although power consumption of WUS detection is higher, the network device can achieve faster triggering of CSI-RS transmission, so that the terminal receives the reference signal as fast as possible, and thus, faster channel tracking or beam management can be achieved.

For example, as shown in fig. 9B, taking offset2 being 0 as an example, the minimum CSI-RS trigger offset value for the WUS to trigger the CSI-RS is 0. The time slot in which the WUS triggered reference signal is located is the time slot in which the WUS DCI is located or the time slot after the time slot in which the WUS DCI is located. For the terminal, the terminal starts buffering data when receiving the WUS signal, since it cannot know whether the WUS triggered CSI-RS is a simultaneous slot trigger or a cross slot trigger before successfully decoding the WUS DCI.

In this embodiment, the offset2 may be an integer or a time length. When the offset2 is an integer, it indicates simultaneous slot scheduling or cross slot scheduling, for example, the offset2 ═ 0 indicates that the slot where the WUS triggered reference signal is located is the slot where the WUS DCI is located or the slot after the slot where the WUS DCI is located, and the offset2 ═ 1 indicates that the WUS triggered CSI-RS is located at the slot next to or after the slot where the WUS DCI is located. Offset2 may also be a length of time, e.g., at a symbol level, such as 10 symbols, the terminal assumes that a WUS-triggered CSI-RS transmission will not be received within an Offset of 10 symbols after the WUS listening time.

In the fourth embodiment of the present application, the minimum K0 value indicated by the Network device is referred to as offset3, and offset3 is multiplexed to the radio Network Temporary identifier rnti (radio Network Temporary identifier) of the "PDCCH-based power saving signal", that is, the "minimum CSI-RS trigger offset value" for triggering the CSI-RS by the "PDCCH-based power saving signal" is offset 3. The difference between this embodiment and the third embodiment is that offset3 can be used in both the PDCCH-based power saving signal and the PDCCH for scheduling data transmission.

For example, the power saving signal in the embodiment of the present application may be based on the PDCCH. If a new RNTI, such as a PS-RNTI, is introduced in case of the PDCCH-based power saving signal, a Cyclic Redundancy Check (CRC) based on the PDCCH-based power saving signal is scrambled by the PS-RNTI.

As another example, the power consumption saving signal in the embodiment of the present application may be a wake-up signal (WUS). If the power saving signal is referred to as WUS, a WUS-RNTI is introduced, and WUS is a PDCCH scrambled by the WUS-RNTI.

In this embodiment, the power saving signal is WUS as an example.

As described above, in the prior art, the network may semi-statically configure the terminal with the "minimum available value" of "K0/K2/CSI-RS trigger offset value/SRS trigger offset value" of "per-Cell" or "per-BWP" or "per-UE" through RRC signaling, that is, the network may configure a minimum K0 value (minimum K0), a minimum K2 value (minimum K2), a minimum Aperiodic CSI-RS trigger offset value (minimum Aperiodic CSI-RS trigger offset), or a minimum Aperiodic SRS trigger offset value (minimum Aperiodic trigger offset). Note that for one of the values "K0/K2/CSI-RS trigger offset value/SRS trigger offset value", the network may configure one or more "available minimum values", if the network configures a plurality of "available minimum values", the network needs to indicate one of the values as a default value (default value), or the standard determines according to a certain rule that one of the configured plurality of "available minimum values" is a default value, for example, the minimum value of the plurality of values is a default value. If the network has only one "minimum available value" configured, this value is the default value.

For one of the values "K0/K2/CSI-RS trigger offset/SRS trigger offset", the terminal will use its default value as "the minimum value currently available" after the network configures one or more "minimum values available" through RRC signaling for the first time. After the terminal wakes up from the sleep state (e.g. enters DRX on duration), or after the terminal switches from one BWP to another BWP, the network can dynamically adjust the "minimum value currently available" through L1 signaling (e.g. PDCCH).

In another possible implementation, the WUS may dynamically indicate the "minimum value currently available".

In this embodiment, the following two ways to apply the minimum K0 value indicated by the network device to the scenario of the WUS triggering the aperiodic RS may be adopted:

the method comprises the following steps: protocol-specific manner

The standard specifies that if the network configures an "available minimum" for K0 and the "currently available minimum" can be dynamically adjusted by L1 signaling, the currently available minimum (i.e., minimum K0) is adapted to the scenario where the WUS triggers an aperiodic RS, e.g., to the scenario where the WUS triggers a network device to transmit an aperiodic CSI-RS, and/or the WUS triggers a terminal to transmit an aperiodic SRS signal.

For example, the network device applies the minimum value K0 currently available to a scenario where the WUS triggers the network device to transmit the aperiodic CSI-RS, and assuming that minimum K0 is 1, the network device will not transmit the WUS-triggered aperiodic CSI-RS in the same time slot as the WUS, and the terminal will not expect to receive the WUS-triggered aperiodic CSI-RS in the time slot for receiving the WUS.

It should be noted that if the L1 signaling dynamically adjusts the "minimum currently available", the WUS triggered CSI-RS scenario also uses the updated "minimum currently available".

The method 2 comprises the following steps: the manner of network configuration. The network may select to configure whether the currently available minimum K0 value is applicable to the scenario of the WUS trigger RS, and specifically, the configuration method may be a mode 1 or a mode 2:

mode 1: indicated in the RRC configuration IE of the PDCCH-based power consumption saving signal.

Illustratively, the RRC configuration IE is as follows:

mode 2: the configuration of this function is done while configuring the minimum available value for K0.

Illustratively, the following configuration information may exist in RRC signaling:

in this embodiment, the minimum K0 value indicated by the network device is referred to as offset3, and the minimum K0 value indicated by the network device can be applied to the scenario of WUS-triggered CSI-RS by any one of the above two methods, that is, the "minimum CSI-RS trigger offset value" of the WUS-triggered CSI-RS is offset3, and the terminal will not receive the WUS-triggered CSI-RS before the slot indicated by { slot where WUS is located + offset2 }.

For example, as shown in fig. 10, when the offset3 is 2, the slot where the CSI-RS triggered by the WUS is located is the 2 nd slot or the following slot after the slot where the WUS DCI is located. For the terminal, the terminal knows that the network equipment does not trigger the sending of the CSI-RS before the 2 nd time slot after the time slot of the WUS DCI, so the terminal can not buffer data in the time, and the purpose of energy saving is achieved. After the terminal successfully decodes the WUS DCI, the terminal can know the specific time slot where the CSI-RS triggered by the WUS is located, so that the actual time slot where the WUS triggers the CSI-RS is used for receiving the CSI-RS.

In this embodiment, the network device uses the minimum specified value K0 as the "minimum CSI-RS trigger offset" of the WUS trigger CSI-RS, and may dynamically adjust and detect the power consumption of the WUS by dynamically indicating the offset 3.

In the fifth embodiment of the present application, the scenes related to the third embodiment and the fourth embodiment are combined, and the offset2 and the offset3 are considered at the same time. The minimum value of K0 indicated by the network device is referred to as offset3, and offset3 is multiplexed to the radio network temporary identity RNTI of the "PDCCH-based power saving signal", while considering that the network device configures "second CSI-RS trigger offset value" offset2 for the "PDCCH-based power saving signal", if offset3< offset2, the "minimum CSI-RS trigger offset value" of the WUS trigger CSI-RS is equal to offset2, otherwise the "minimum CSI-RS trigger offset value" of the WUS trigger CSI-RS is equal to offset3, that is, the "minimum CSI-RS trigger offset value" of the WUS trigger CSI-RS is equal to the larger of offset2 and offset 3.

The offset2 in this embodiment is equivalent to the "second CSI-RS trigger offset value" configured by the network device to the terminal in the third embodiment of this application. Effects of Offset 2: the terminal assumes that no RS transmission will be received before shifting offset2 slots after WUS occupancy; configuration considerations of offset 2: PDCCH decoding time, which may require the terminal to start extra hardware and software processing after decoding; configuration method of offset 2: it may be a protocol specification, or a network configuration.

For example, as shown in fig. 11A, when offset3< offset2, such as offset2 being 1 and offset3 being 0, the "minimum CSI-RS trigger offset value" for the WUS trigger RS is equal to offset 2. For the terminal, the terminal knows that the network equipment does not trigger the sending of the CSI-RS before the 1 st time slot after the time slot of the WUS DCI, so the terminal can not buffer data in the period of time, and the aim of saving energy is fulfilled. After the terminal successfully decodes the WUS DCI, the terminal can know the specific time slot where the CSI-RS triggered by the WUS is located, so that the actual time slot where the WUS triggers the CSI-RS is used for receiving the CSI-RS.

For example, as shown in fig. 11B, when offset3> offset2, such as offset2 is 1 and offset3 is 2, the "minimum CSI-RS trigger offset value" of the WUS trigger RS is equal to offset 3. For the terminal, the terminal knows that the network equipment does not trigger the sending of the CSI-RS before the 2 nd time slot after the time slot of the WUS DCI, so the terminal can not buffer data in the time, and the purpose of energy saving is achieved. After the terminal successfully decodes the WUS DCI, the terminal can know the specific time slot where the CSI-RS triggered by the WUS is located, so that the actual time slot where the WUS triggers the CSI-RS is used for receiving the CSI-RS.

Offset2 may be an integer to indicate co-slot scheduling or cross-slot scheduling, for example, Offset2 ═ 0 indicates that the WUS triggered reference signal is in the slot where the WUS DCI is located or after the slot where the WUS DCI is located, and Offset2 ═ 1 indicates that the WUS triggered RS is in the slot next to or after the slot where the WUS DCI is located. Offset2 may also be a length of time, e.g., at the symbol level, such as 10 symbols, then the terminal assumes that no WUS-triggered RS transmission will be received by an Offset of 10 symbols after the WUS listening time. When offset2 indicates a length of time, offset3 is replaced by delta, which indicates the time interval between the WUS listen time and the start symbol of the slot indicated by offset 3.

Illustratively, as shown in fig. 12, offset2 represents a length of time, and offset3 ═ 0 results in delta < offset2, so the WUS triggered CSI-RS "minimum CSI-RS triggered offset value" is equal to offset 2. The terminal does not need to buffer the data during the offset2 period

In this embodiment, it is considered that the network device sets an offset2 for the terminal, and at this time, regardless of the size of the offset3, the terminal does not need to buffer data in advance within the offset2, so that there is an upper limit to the power consumption of the terminal for detecting WUS. On this basis, if offset3> offset2 or delta > offset2, the terminal can further reduce the processing speed of decoding WUS, further saving power consumption for the terminal to detect WUS.

In the sixth embodiment of the present application, on the basis of the fourth embodiment, one offset4 is considered. The minimum value of K0 indicated by the network device is referred to as offset3, offset3 is multiplexed to the radio network temporary identity RNTI of the "PDCCH-based power saving signal", and meanwhile, considering offset4, where offset4 refers to the distance between WUS and On Duration, if offset3> offset4, the "minimum CSI-RS trigger offset value" of the WUS trigger CSI-RS is equal to offset4, otherwise, the "minimum CSI-RS trigger offset value" of the WUS trigger CSI-RS is equal to offset3, that is, the "minimum CSI-RS trigger offset value" of the WUS trigger CSI-RS is equal to the smaller value of offset3 and offset 4.

For example, as shown in fig. 13A, when offset3< offset4, such as offset3 being 0 and offset4 being 3, the "minimum CSI-RS trigger offset value" for WUS triggered CSI-RS is equal to offset3 being 0. The time slot of the CSI-RS triggered by the WUS is the time slot of the WUS DCI or the time slot after the time slot of the WUS DCI. For the terminal, the terminal starts buffering data when receiving the WUS signal, since it cannot know whether the WUS triggered RS is a simultaneous slot trigger or a cross slot trigger before successfully decoding the WUS DCI.

Illustratively, as shown in fig. 13B, when offset3> offset4, such as offset3 is 4 and offset4 is 3, the WUS triggered CSI-RS can only be sent after offset3 if the scheme of the fourth embodiment is followed. In this embodiment, the WUS-triggered CSI-RS can be transmitted after the terminal enters the On Duration by setting the "minimum CSI-RS trigger offset value" of the WUS-triggered CSI-RS to be offset 4. Therefore, the terminal can track the channel or perform operations such as beam management and the like by receiving the CSI-RS triggered by the WUS more quickly, and the performance is improved. In addition, in this embodiment, it is assumed that the terminal has successfully decoded the WUS before entering the On Duration, so after entering the On Duration, the terminal only needs to trigger the actual timeslot for CSI-RS transmission by the WUS to receive the CSI-RS.

Seventh embodiment of the present application, in addition to fifth embodiment, considering offset4, here offset4 refers to the distance between WUS and On Duration. At this time, the following cases can be classified.

In the first case, offset2< offset4 and offset3< offset4, then the minimum triggering offset for the WUS triggered RS is the larger of offset2 and offset 3.

Illustratively, as shown in fig. 14A, if offset2 is 1, offset3 is 2, and offset4 is 3, where offset2< offset4 and offset3< offset4, the WUS trigger "minimum CSI-RS trigger offset value" is equal to offset3 is 2. For the terminal, the terminal knows that the network equipment does not trigger the sending of the CSI-RS before the 2 nd time slot after the time slot of the WUS DCI, so the terminal can not buffer data in the time, and the purpose of energy saving is achieved. After the terminal successfully decodes the WUS DCI, the terminal can know the specific time slot where the CSI-RS triggered by the WUS is located, so that the actual time slot where the WUS triggers the CSI-RS is used for receiving the CSI-RS.

In the second case, offset2> offset4 and offset3> offset4, then the minimum triggering offset for the WUS triggered RS is offset 4.

For example, as shown in fig. 14B, if offset2 is 5, offset3 is 4, and offset4 is 3, and when offset2> offset4 and offset3> offset4, the WUS trigger "minimum CSI-RS trigger offset value" is equal to offset4, and the WUS triggered CSI-RS may be sent after the terminal enters On Duration. Therefore, the terminal can track the channel or perform operations such as beam management and the like by receiving the CSI-RS triggered by the WUS more quickly, and the performance is improved. In addition, the terminal is sure to successfully decode the WUS before entering the On Duration, so the terminal only needs to receive the CSI-RS in the actual time slot of the WUS trigger RS transmission after entering the On Duration.

In the third case, one of the offset2 and offset3 values is greater than offset4 and one is less than offset4, the WUS trigger "minimum CSI-RS trigger offset value" is equal to offset 4.

For example, as shown in fig. 14C, if offset2 is 1, offset3 is 4, and offset4 is 3, when offset2< offset4 and offset3> offset4, the "minimum CSI-RS trigger offset value" of the WUS triggered aperiodic CSI-RS is equal to offset 4. When considering only offset2 and offset3, since the terminal knows that no WUS-triggered RS transmission will be received within both offset2 and offset3, the terminal will select the larger of offset2 and offset3 as the smallest triggering offset, i.e., the "smallest CSI-RS trigger offset" is offset3, in order to further reduce the processing speed for decoding WUS and further save power consumption for detecting WUS by the terminal. Considering offset4, when offset3> offset4, WUS triggered RS can be sent after the terminal enters On Duration, i.e., "minimum CSI-RS trigger offset" is equal to offset 4. This can help the terminal to track the channel or perform operations such as beam management by receiving the RS triggered by the WUS more quickly, which helps to improve performance. In addition, the terminal is sure to successfully decode the WUS before entering the On Duration, so the terminal only needs to receive the CSI-RS in the actual time slot of the WUS trigger RS transmission after entering the On Duration.

It will be appreciated that, in combination with the above three cases, the "minimum CSI-RS trigger offset value" for the WUS triggered aperiodic CSI-RS can be determined by the following equation: min { max { offset2, offset3}, offset4 }.

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

Fig. 15 shows a block diagram of a communication device 150, where the communication device 150 may be a terminal, or a chip in the terminal, or a system on a chip, and the communication device 150 may be used to perform the functions of the terminal involved in the above embodiments. As one implementation manner, the communication device 150 shown in fig. 15 includes: receiving section 151 and determining section 152.

A receiving unit 151, configured to receive configuration information or indication information sent by the network device.

A determining unit 152, configured to determine a first channel state information reference signal (CSI-RS) trigger offset value according to the configuration information or the indication information received by the receiving unit, where the first CSI-RS trigger offset value is a minimum value of a time slot difference between a time slot in which a power saving signal (PDCCH based power saving signal/channel, PBPSS) based on a physical downlink control channel PDCCH is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located.

The receiving unit is also used for receiving the first PBPSS sent by the receiving network equipment; the first CSI-RS is also used for receiving the first CSI-RS sent by the network equipment; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not less than the first CSI-RS trigger offset value. The PBPSS is used for indicating whether the terminal needs to monitor scheduling in the OnDuration before the activation period OnDuration of one discontinuous reception.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The communication device 150 according to the embodiment of the present application is configured to perform the function of the terminal in the csi measurement parameter indication, so that the same effect as the csi measurement parameter indication method can be achieved.

As yet another implementation, the communication device 150 shown in fig. 15 may include: a processing module and a communication module. The processing module is used for controlling and managing the actions of the communication device 150, for example, the processing module may integrate the functions of the determining unit 152, and the communication module may be used for integrating the functions of the receiving unit 151, for example, the communication with the functional modules or network entities shown in fig. 6. Further, the communication device 150 may also include a storage module for storing program codes and data of the communication device 150.

The processing module may be a processor or a controller. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module may be a transceiver circuit or a communication interface, etc. The storage module may be a memory. When the processing module is a processor, the communication module is a communication interface, and the storage module is a memory, the communication device 150 shown in fig. 15 may be the communication device shown in fig. 7.

Fig. 16 shows a block diagram of a communication device 160, where the communication device 160 may be a network device, or a chip in the network device, or a system on chip, and the communication device 160 may be used to perform the functions of the network device involved in the above embodiments. As one implementation manner, the communication device 160 shown in fig. 16 includes: a generating unit 161, a transmitting unit 162;

the generating unit 161 generates configuration information or instruction information.

A sending unit 162, configured to send configuration information or indication information to the terminal; the terminal determines a first channel state information reference signal (CSI-RS) trigger offset value according to the configuration information or the indication information, wherein the first CSI-RS trigger offset value is the minimum value of a time slot difference between a time slot in which a PDCCH (physical downlink control channel) based power saving signal (PBPSS) is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located.

A transmitting unit 162, further configured to transmit the first PBPSS to the terminal; the terminal is also used for sending the first CSI-RS to the terminal; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not less than the first CSI-RS trigger offset value.

As still another implementation, the communication device 160 shown in fig. 16 includes: a processing module and a communication module. The processing module is used for controlling and managing the actions of the communication device 160, and for example, the processing module may integrate the functions of the generating unit 161. The communication module may integrate the functions of the sending unit 162, such as communication with the functional modules or network entities shown in fig. 6. The communication device 160 may also include a memory module for storing program codes and data for the communication device 160.

The processing module may be a processor or a controller. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module may be a transceiver circuit or a communication interface, etc. The storage module may be a memory. When the processing module is a processor, the communication module is a communication interface, and the storage module is a memory, the communication device 160 according to the embodiment of the present application may be the communication device shown in fig. 7.

Fig. 17 is a block diagram of a communication system according to an embodiment of the present application, and as shown in fig. 7, the communication system may include: a plurality of terminals 170, a network device 171.

Therein, the network device 171 may be used to generate configuration information or indication information similar to the function of the communication apparatus 160 shown in fig. 16.

The terminal 170 is similar to the communication apparatus 150 shown in fig. 15 in function, and may be configured to receive configuration information or indication information sent by the network device 171, and determine a first channel state information reference signal (CSI-RS) trigger offset value, where the first CSI-RS trigger offset value is a minimum value of a slot difference between a slot where a power saving signal (PBPSS) based on a physical downlink control channel PDCCH is located and a slot where an aperiodic CSI-RS triggered by the PBPSS is located.

A network device 171, further operable to send the first PBPSS to the terminal; the terminal is also used for sending the first CSI-RS to the terminal; and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not less than the first CSI-RS trigger offset value.

Based on the communication system shown in fig. 17, the terminal 170 may determine a first CSI-RS trigger offset value, where the first CSI-RS trigger offset value is less than or equal to a time slot difference between a time slot in which the PDCCH-based power consumption saving signal is located and a time slot in which the aperiodic CSI-RS triggered by the PDCCH is located, so that the first CSI-RS trigger offset value may also be understood as a minimum value of a time slot difference between a time slot in which the PDCCH-based power consumption saving signal is located and a time slot in which the aperiodic CSI-RS triggered by the PDCCH is located. When the first CSI-RS trigger offset value offset is set to be large enough, first, the terminal may explicitly know that the network device does not send the CSI-RS signal for an offset number of slots after the slot where the network device sends the PDCCH-based power consumption saving signal, and the terminal does not need to buffer data during this time, so the terminal may turn off the radio frequency module to save power consumption. Secondly, the terminal can slow down the decoding speed and reduce the processing voltage, thereby saving the power consumption.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, 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 be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. 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 readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for indicating channel state measurement parameters, comprising:

a terminal determines a first channel state information reference signal (CSI-RS) trigger offset value, wherein the first CSI-RS trigger offset value is the minimum value of a time slot difference between a time slot in which a PDCCH Based Power Saving Signal (PBPSS) is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located; before an activation period OnDuration of discontinuous reception, the PBPSS is used for indicating whether the terminal needs monitoring scheduling in the OnDuration, and the PBPSS is also used for indicating the terminal to carry out CSI measurement;

the terminal receives a first PBPSS sent by network equipment;

the terminal receives a first CSI-RS sent by the network equipment;

and the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not less than the first CSI-RS trigger offset value.

2. The method of claim 1, wherein the terminal determines a first CSI-RS trigger offset value, comprising:

the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources in a first CSI-RS resource group, the first CSI-RS resource group is a group of resources configured for the terminal by the network equipment, and any one resource in the first CSI-RS resource group is only triggered in the PBPSS.

3. The method of claim 1, wherein the terminal determines a first CSI-RS trigger offset value, comprising:

the first CSI-RS trigger offset value is the minimum value of the trigger offset values of all CSI-RS resources related to a first trigger state group, the first trigger state group is a group of trigger states configured for a terminal by network equipment, and any one trigger state in the first trigger state group is only indicated in the PBPSS.

4. The method of claim 1, wherein the terminal determines a first CSI-RS trigger offset value, comprising:

the first CSI-RS trigger offset value is a second trigger offset value, and the second trigger offset value is configured to the terminal by the network equipment;

the second trigger offset value is for the PBPSS only.

5. The method of claim 4, wherein the terminal determines a first CSI-RS trigger offset value, comprising:

the terminal is configured with a second trigger offset value by the network equipment;

the first CSI-RS trigger offset value is a larger one of the second trigger offset value and a third trigger offset value;

the third trigger offset value is the minimum K0 value indicated by the network device;

the value K0 is a time slot difference between a time slot in which a PDCCH (scheduling PDCCH, SPDCCH) for scheduling data is located and a time slot in which a PDSCH (physical downlink data channel) scheduled by the SPDCCH is located.

6. The method of claim 5, further comprising:

the first CSI-RS trigger offset value is the smaller one of the third trigger offset value and the fourth trigger offset value;

wherein the fourth trigger offset value is a time slot difference between the time slot of the PBPSS and the OnDuration starting time slot.

7. The method of claim 6, further comprising:

when the second trigger offset value and the third trigger offset value are both less than the fourth trigger offset value, the first CSI-RS trigger offset value is the larger one of the second trigger offset value and the third trigger offset value;

otherwise, the first CSI-RS trigger offset value is the fourth trigger offset value.

8. A method for indicating channel state measurement parameters, comprising:

the network equipment sends a first power saving signal (PBPSS) based on a Physical Downlink Control Channel (PDCCH) to the terminal; before an activation period OnDuration of discontinuous reception, the PBPSS is used for indicating whether the terminal needs monitoring scheduling in the OnDuration, and the PBPSS is also used for indicating the terminal to carry out CSI measurement;

the network equipment sends a first channel state information reference signal (CSI-RS) to the terminal;

the time slot difference between the time slot of the first PBPSS and the time slot of the first CSI-RS triggered by the first PBPSS is not smaller than a first CSI-RS trigger offset value;

the first CSI-RS trigger offset value is the minimum value of the time slot difference between the time slot where the PBPSS is located and the time slot where the aperiodic CSI-RS triggered by the PBPSS is located.

9. The method of claim 8,

10. The method of claim 8,

11. The method of claim 8,

the second trigger offset value is for the PBPSS only.

12. The method of claim 11, further comprising:

13. The method of claim 12, further comprising:

14. The method of claim 13, further comprising:

15. A communication apparatus, characterized in that the communication apparatus comprises:

the communication interface is used for receiving configuration information or indication information sent by the network equipment;

a processor, configured to determine a first channel state information reference signal (CSI-RS) trigger offset value according to configuration information or indication information received by the communication interface, where the first CSI-RS trigger offset value is a minimum value of a time slot difference between a time slot in which a power saving signal (PDCCH based power saving signal/channel, PBPSS) based on a physical downlink control channel PDCCH is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located; before an activation period OnDuration of discontinuous reception, the PBPSS is used for indicating whether the terminal needs monitoring scheduling in the OnDuration, and the PBPSS is also used for indicating the terminal to carry out CSI measurement;

the communication interface is also used for receiving a first PBPSS sent by the network equipment;

the communication interface is further used for receiving a first CSI-RS sent by the network equipment;

16. The communications apparatus of claim 15, wherein the determining a first CSI-RS trigger offset value comprises:

17. The communications apparatus of claim 15, wherein the determining a first CSI-RS trigger offset value comprises:

18. The communications apparatus of claim 15, wherein the determining a first CSI-RS trigger offset value comprises:

the second trigger offset value is for the PBPSS only.

19. The communications apparatus of claim 18, wherein the determining a first CSI-RS trigger offset value comprises:

20. The communications device of claim 19, further comprising:

21. The communications device of claim 20, further comprising:

22. A communication apparatus, characterized in that the communication apparatus comprises:

a processor for generating configuration information or indication information;

a communication interface for transmitting configuration information or indication information to a terminal;

the processor is further configured to determine a first channel state information reference signal (CSI-RS) trigger offset value according to the configuration information or the indication information, where the first CSI-RS trigger offset value is a minimum value of a time slot difference between a time slot in which a PDCCH Based Power Saving Signal (PBPSS) is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located, and is based on a physical downlink control channel PDCCH; before an activation period OnDuration of discontinuous reception, the PBPSS is used for indicating whether the terminal needs monitoring scheduling in the OnDuration, and the PBPSS is also used for indicating the terminal to carry out CSI measurement;

the communication interface is also used for sending a first PBPSS to the terminal;

the communication interface is further used for sending a first CSI-RS to the terminal;

23. The communications apparatus of claim 22, wherein the determining a first CSI-RS trigger offset value comprises:

24. The communications apparatus of claim 22, wherein the determining a first CSI-RS trigger offset value comprises:

25. The communications apparatus of claim 22, wherein the determining a first CSI-RS trigger offset value comprises:

the second trigger offset value is for the PBPSS only.

26. The communications apparatus of claim 25, wherein the determining a first CSI-RS trigger offset value comprises:

27. The communications device of claim 26, further comprising:

28. The communications device of claim 27, further comprising:

29. A communication system, the communication system comprising: network equipment and a terminal;

the terminal is used for determining a first channel state information reference signal (CSI-RS) trigger offset value, wherein the first CSI-RS trigger offset value is the minimum value of a time slot difference between a time slot in which a Physical Downlink Control Channel (PDCCH) based power saving signal (PBPSS) is located and a time slot in which an aperiodic CSI-RS triggered by the PBPSS is located; before an activation period OnDuration of discontinuous reception, the PBPSS is used for indicating whether the terminal needs monitoring scheduling in the OnDuration, and the PBPSS is also used for indicating the terminal to carry out CSI measurement;

the network equipment is used for sending a first PBPSS to a terminal;

the network equipment is used for sending a first CSI-RS to a terminal;

30. A computer-readable storage medium, comprising computer instructions which, when executed on a computer, cause the computer to perform the channel state measurement parameter indication method of any one of claims 1-7.

31. A chip system, comprising: the chip system comprises a processor and a memory, wherein instructions are stored in the memory; the instructions, when executed by the processor, implement the channel state measurement parameter indication method of any of claims 1-7.

32. A computer-readable storage medium, comprising computer instructions which, when executed on a computer, cause the computer to perform the channel state measurement parameter indication method of any of claims 8-14.

33. A chip system, comprising: the chip system comprises a processor and a memory, wherein instructions are stored in the memory; the instructions, when executed by the processor, implement the channel state measurement parameter indication method of any of claims 8-14.