A method for communication transmission

Abstract

The embodiment of the present invention discloses a method and device for communication transmission, the method comprising: a terminal device receives a scheduling minimum time slot offset indicated by a network device; the terminal device receives indication information sent by the network device; or the terminal device sends indication information to the network device; wherein the indication information is used to determine a first receiving state of the terminal device for detecting PDCCH; when the scheduling minimum time slot offset is greater than 0, the terminal device detects PDCCH in the first receiving state. Through this method, after the terminal device turns off part of the number of antennas, before the network device sends PDCCH to the terminal device, the network device will adjust the PDCCH sent to the terminal device, so as to ensure that the terminal device can normally receive the PDCCH sent by the network device after turning off part of the number of antennas to save power consumption.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication transmission method. Background Art

[0002] With the continuous development of communication technology, more and more attention is paid to reducing the power consumption of terminal devices during wireless communication. In order to reduce the power consumption of terminal devices during wireless communication and better save the power of terminal devices, terminal devices can save power consumption of terminal devices from aspects such as time domain and space domain.

[0003] When reducing the power consumption of terminal equipment from the time domain, the prior art saves the power consumption of terminal equipment by cross-time slot scheduling, that is, the base station schedules PDSCH to UE through PDCCH, and the time slot offset between PDCCH and scheduled PDSCH is greater than 0. Because when the terminal equipment knows that the scheduled PDSCH and PDCCH are not in the same time slot before detecting PDCCH, the terminal equipment can reduce unnecessary data buffering and relax the processing time of PDCCH, thereby achieving the effect of saving power consumption. When reducing the power consumption of terminal equipment from the spatial domain, the power consumption of terminal equipment is saved by turning off some antennas. One method is to turn off some receiving antennas when detecting PDCCH, and then after detecting PDCCH, the terminal equipment turns on more receiving antennas to receive the scheduled PDSCH. Among them, because it takes a switching time for the terminal equipment to turn on or off the receiving antenna. Therefore, in the prior art, if the cross-time slot scheduling method makes the time slot offset between PDCCH and scheduled PDSCH cover the antenna switching time, the terminal equipment can save the power consumption of the terminal equipment in the spatial domain through internal implementation.

[0004] The main problem with the method of saving power consumption in the spatial domain by internally implementing the above-mentioned terminal device is that during the communication process, the base station is not aware of the change in the number of antennas used by the terminal device to receive PDCCH. Therefore, when the terminal device switches the number of receiving antennas in order to save power consumption, for example, the terminal device uses 2Rx after switching, but the base station still believes that the terminal device uses 4Rx, resulting in inappropriate selection of PDCCH parameters when the base station sends PDCCH, such as inappropriate selection of AL (aggregation level), etc., which leads to problems such as reduced performance of the terminal device in detecting PDCCH. Summary of the invention

[0005] The present application provides a communication transmission method and device for effectively saving the power consumption of a terminal device without affecting the PDCCH performance.

[0006] In a first aspect, an embodiment of the present application provides a method for communication transmission, wherein a terminal device receives a scheduled minimum time slot offset indicated by a network device; the terminal device receives first indication information sent by the network device; or the terminal device sends second indication information to the network device; when the scheduled minimum time slot offset is greater than 0, the terminal device detects PDCCH in a first receiving state. Optionally, the first indication information and / or the second indication information is used to determine a first receiving state for the terminal device to detect PDCCH; or optionally, the first indication information and / or the second indication information is used to determine a first antenna number for the terminal device to detect PDCCH, and the first antenna number is less than the maximum number of receiving antennas configured or supported by the terminal device.

[0007] Based on this scheme, when an embodiment of the present invention saves power consumption of a terminal device by switching a current receiving state to a first receiving state, if the terminal device receives indication information sent by a network device, it determines that PDCCH can be detected through the first receiving state; or, if the terminal device determines that the current receiving state needs to be switched to the first receiving state, it sends indication information to the network device; that is, the network device and the terminal device notify each other by sending indication information to each other, so that the network device knows that the terminal device uses the first receiving state to detect PDCCH, thereby ensuring that the terminal device can normally receive the PDCCH sent by the network device when saving power consumption of the terminal device by switching the current receiving state to the first receiving state.

[0008] Accordingly, the first indication information includes at least one of the following: when the network device needs to send PDCCH to the terminal device, compensation for the sent PDCCH; or the terminal device reports channel state information CSI and / or channel quality indication CQI information of at least two receiving states; or a compensation factor used to assist the network device in determining PDCCH parameters.

[0009] Based on this scheme, an embodiment of the present application provides several situations in which the first indication information sent by the network device is received by the terminal device. For example, the indication information mainly indicates that the network device compensates for the sent PDCCH, that is, it can ensure that the terminal device normally receives the PDCCH in the first receiving state, so that the terminal device can switch the current receiving state to the first receiving state when receiving the indication information. For another example, the indication information indicates that the terminal device reports the information of measuring CSI and / or CQI through at least two antenna numbers, so that the network device can know the information of measuring CSI and / or CQI through at least two antenna numbers, which helps the terminal device to normally receive PDCCH in the first receiving state.

[0010] In one possible implementation, the second indication information is used to indicate at least one of the following: a compensation factor for assisting the network device in determining PDCCH parameters; or information indicating CSI and / or CQI of at least two receiving states determined by the terminal device; or the network device compensating the PDCCH when sending the PDCCH to the terminal device.

[0011] Based on this solution, the embodiment of the present application specifically introduces the situation of the second indication information sent by the terminal device to the network device. The second indication information indicates the compensation factor of the PDCCH parameter. Thus, after receiving the indication information, the network device can adjust the PDCCH sent to the terminal device according to the compensation factor in the indication information to ensure that the terminal device normally receives the PDCCH in the first receiving state.

[0012] In a possible implementation, the terminal device detects PDCCH in a first receiving state when the scheduled minimum time slot offset is not less than Y; wherein Y is the time required for the terminal device to turn on and / or turn off the antenna.

[0013] Based on this solution, in order to ensure that the terminal device has sufficient time to switch the receiving state in the embodiment of the present application, it is necessary to make the scheduling minimum time slot offset greater than the time required for the terminal device to turn on and / or turn off the antenna.

[0014] In a possible implementation, before the terminal device reports at least two types of CSI and / or CQI information to the network device, it also includes: the terminal device uses the maximum number of receiving antennas configured or supported by the terminal device to receive the signal state information reference signal CSI-RS, and calculates N CSI and / or CQI corresponding to N receiving states; the terminal device reports the N CSI and / or CQI to the network device; wherein the N receiving states include a first receiving state.

[0015] Based on this scheme, the terminal device described in the embodiment of the present application reports the CSI and / or CQI corresponding to the N number of antennas to the network device, so that the network device can know the CSI and / or CQI corresponding to the N number of antennas, and select one of the CSIs according to the actual situation to determine the PDCCH sent to the terminal device, which is more applicable.

[0016] In a possible implementation, before the terminal device reports at least two types of CSI and / or CQI information, it also includes: the terminal device adopts a second receiving state to receive CSI-RS, and calculates the first CSI and / or first CQI corresponding to the first receiving state and the second CSI and / or second CQI corresponding to the second receiving state; the terminal device uses the first CSI and / or first CQI and the second CSI and / or second CQI as the CSI and / or CQI reported to the network device; wherein the number of first receiving antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of the second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

[0017] Based on this scheme, the network device in the embodiment of the present application instructs the terminal device to report information of measuring CSI and / or CQI of at least two antenna numbers, including the first CSI and / or first CQI corresponding to the first antenna number and the second CSI and / or second CQI corresponding to the second antenna number; thereby, the network device can determine the PDCCH to be sent to the terminal device based on the received first CSI and / or first CQI to ensure that the terminal device can normally receive the PDCCH in the first receiving state.

[0018] In a possible implementation manner, the first indication information includes a compensation factor for assisting the network device in determining a PDCCH parameter.

[0019] Based on this scheme, the terminal device in the embodiment of the present application can determine whether the PDCCH after the network device compensates according to the compensation factor in the received first indication information can be received normally in the first receiving state. If not, the terminal device does not switch the receiving state. If so, the current receiving state is switched to the first receiving state.

[0020] In a possible implementation, if the terminal device does not receive the information requesting scheduling data sent by the network device within a threshold time length, the terminal device uses the first receiving state to detect PDCCH when the scheduling minimum time slot offset is greater than 0.

[0021] Based on this scheme, the embodiment of the present application determines the conditions for switching to the first receiving state by setting a threshold duration, that is, if the terminal device does not receive the information requesting scheduling data sent by the network device within the threshold duration, then the terminal device uses the first receiving state to detect PDCCH when the scheduling minimum time slot offset is greater than 0.

[0022] In the second aspect, an embodiment of the present application also provides a method for communication transmission, wherein a network device indicates to a terminal device that a minimum time slot offset is scheduled; the network device receives second indication information sent by the terminal device; or, the network device sends first indication information to the terminal device; when the minimum time slot offset is greater than 0 and it is necessary to send a PDCCH to the terminal device, the network device sends a PDCCH suitable for receiving in the first receiving state to the terminal device. Optionally, the first indication information and / or the second indication information is used to determine the first receiving state of the terminal device for detecting the PDCCH; or optionally, the first indication information and / or the second indication information is used to determine the first number of antennas for the terminal device to detect the PDCCH, and the first number of antennas is less than the maximum number of receiving antennas configured or supported by the terminal device.

[0023] Based on this scheme, when an embodiment of the present invention saves power consumption of a terminal device by switching a current receiving state to a first receiving state, if the terminal device receives indication information sent by a network device, it determines that PDCCH can be detected through the first receiving state; or, if the terminal device determines that the current receiving state needs to be switched to the first receiving state, it sends indication information to the network device; that is, the network device and the terminal device notify each other by sending indication information to each other, so that the network device knows that the terminal device uses the first receiving state to detect PDCCH, thereby ensuring that the terminal device can normally receive the PDCCH sent by the network device when saving power consumption of the terminal device by switching the current receiving state to the first receiving state.

[0024] In one possible implementation, the first indication information includes at least one of the following: when the network device needs to send PDCCH to the terminal device, compensation for the sent PDCCH; or the terminal device reports channel state information CSI and / or channel quality indication CQI information of at least two receiving states; or a compensation factor used to assist the network device in determining PDCCH parameters.

[0025] Based on this scheme, an embodiment of the present application provides several situations in which the network device sends the first indication information to the terminal device. For example, the indication information mainly indicates that the network device has compensated for the sent PDCCH, that is, it can ensure that the terminal device can normally receive the PDCCH in the first receiving state, so that the terminal device can switch the current receiving state to the first receiving state when receiving the indication information. For another example, the indication information instructs the terminal device to report information on measuring CSI and / or CQI through at least two antenna numbers, so that the network device can know the information on measuring CSI and / or CQI through at least two antenna numbers, which helps the terminal device to normally receive PDCCH in the first receiving state.

[0026] In one possible implementation, the second indication information is used to indicate at least one of the following: a compensation factor for assisting the network device in determining PDCCH parameters; or CSI and / or CQI information of at least two receiving states determined by the terminal device; or the network device compensating the PDCCH when sending the PDCCH to the terminal device.

[0027] Based on this solution, the embodiment of the present application specifically introduces the situation where the network device receives the second indication information sent by the terminal device. The indication information indicates the compensation factor of the PDCCH parameter. Thus, after receiving the indication information, the network device can adjust the PDCCH sent to the terminal device according to the compensation factor in the indication information to ensure that the terminal device normally receives the PDCCH in the first receiving state.

[0028] In one possible implementation, the network device sends a PDCCH suitable for reception in the first receiving state to the terminal device when the scheduling minimum time slot offset is not less than Y and the PDCCH needs to be sent to the terminal device; wherein Y is the time required for the terminal device to turn on and / or turn off the antenna.

[0029] Based on this solution, in order to ensure that the terminal device has sufficient time to switch the receiving state in the embodiment of the present application, it is necessary to make the scheduling minimum time slot offset greater than the time required for the terminal device to turn on and / or turn off the antenna.

[0030] In one possible implementation, the network device receives CSI and / or CQI information of at least two reception states reported by the terminal device, including: the network device receives N CSI and / or CQI reported by the terminal device; wherein the N CSI and / or CQI are measured after the terminal device receives CSI-RS using the maximum number of configured or supported receiving antennas, and the N CSI and / or CQI include the CSI and / or CQI corresponding to the first reception state.

[0031] Based on this scheme, the network device in the embodiment of the present application can select one of the CSIs to determine the parameters of the PDCCH sent to the terminal device according to the actual situation based on the N CSIs and / or CQIs reported by the terminal device. In addition, the N CSIs and / or CQIs include the CSIs and / or CQIs corresponding to the first number of antennas. Therefore, the network device can determine the PDCCH sent to the terminal device based on the CSIs and / or CQIs corresponding to the first number of antennas to ensure that the terminal device can normally receive the PDCCH in the first receiving state.

[0032] In one possible implementation, the network device receives CSI and / or CQI information of at least two receiving states reported by the terminal device, including: the network device receives the first CSI and / or first CQI corresponding to the first number of antennas and the second CSI and / or second CQI corresponding to the second number of antennas reported by the terminal device; wherein the first CSI and / or first CQI and the second CSI and / or second CQI are calculated after the terminal device receives CSI-RS in the second receiving state, and the number of first antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

[0033] Based on this solution, the network device in the embodiment of the present application can know the first CSI and / or first CQI corresponding to the first number of antennas reported by the terminal device, based on the first CSI and / or first CQI corresponding to the first number of antennas and the second CSI and / or second CQI corresponding to the second number of antennas. Therefore, the network device can determine the PDCCH to be sent to the terminal device based on the CSI and / or CQI corresponding to the first number of antennas, so as to ensure that the terminal device normally receives the PDCCH in the first receiving state.

[0034] In a possible implementation manner, the first indication information includes: a compensation factor for assisting the network device in determining a PDCCH parameter.

[0035] Based on this scheme, the terminal device in the embodiment of the present application can determine whether the PDCCH after the network device compensates according to the compensation factor in the received first indication information can be received normally in the first receiving state. If not, the terminal device does not switch the receiving state. If so, the current receiving state is switched to the first receiving state.

[0036] In one possible implementation, when the scheduling minimum time slot offset is greater than 0 and the network device needs to send PDCCH to the terminal device, before sending PDCCH suitable for receiving in the first receiving state to the terminal device, the network device determines parameters suitable for receiving PDCCH in the first receiving state.

[0037] Based on this scheme, an embodiment of the present application needs to determine the parameters of the PDCCH suitable for reception in the first receiving state to ensure that when the terminal device is in the first receiving state, the network device sends the PDCCH suitable for reception in the first receiving state to the terminal device, so that the terminal device can receive the PDCCH normally.

[0038] In a possible implementation, if the network device does not send information requesting scheduling data to the terminal device within a threshold time length, the network device compensates the PDCCH sent to the terminal device when the scheduling minimum time slot offset is greater than 0.

[0039] Based on this scheme, the embodiment of the present application determines the conditions for compensating the sent PDCCH by setting a threshold duration, that is, if the network device does not send information requesting scheduling data to the terminal device within the threshold duration, then the network device compensates the PDCCH sent to the terminal device when the scheduling minimum time slot offset is greater than 0.

[0040] In one possible implementation, the network device determines the parameters of the PDCCH applicable to the first receiving state in the following manner: the network device determines the parameters of the PDCCH applicable to the first receiving state according to a predefined compensation factor; or the network device determines the parameters of the PDCCH applicable to the first receiving state according to the second indication information sent by the terminal device; or the network device determines the parameters of the PDCCH applicable to the first receiving state according to the compensation factor configured by itself; or the network device determines the PDCCH applicable to the first receiving state according to the information reported by the terminal device containing CSI and / or CQI corresponding to the first receiving state.

[0041] Based on this scheme, the embodiment of the present application introduces in detail a method for the network device to determine the PDCCH suitable for reception in the first reception state. For example, the network device determines the parameters of the PDCCH suitable for the first reception state according to a predefined compensation factor; or the network device determines the parameters of the PDCCH suitable for the first reception state according to the second indication information sent by the terminal device; or the network device determines the parameters of the PDCCH suitable for the first reception state according to the compensation factor configured by itself; or the network device determines the parameters of the PDCCH suitable for the first reception state according to the information reported by the terminal device containing the CSI and / or CQI corresponding to the first reception state.

[0042] In a third aspect, an embodiment of the present application further provides a terminal device, which can be used to perform the operations in the first aspect and any possible implementation of the first aspect. For example, the terminal device may include a module or unit for performing each operation in the first aspect or any possible implementation of the first aspect. For example, it includes a processing unit and a communication unit.

[0043] In a fourth aspect, an embodiment of the present application further provides a network device, which can be used to perform the operations in the second aspect and any possible implementation of the second aspect. For example, the network device may include a module or unit for performing each operation in the second aspect or any possible implementation of the second aspect. For example, it includes a processing unit and a communication unit.

[0044] In a fifth aspect, an embodiment of the present application further provides a communication system, comprising the terminal device of the third aspect and the network device of the fourth aspect.

[0045] In the sixth aspect, an embodiment of the present application provides a chip system, including a processor and optionally a memory; wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a communication device equipped with the chip system executes any method in the above-mentioned first aspect or any possible implementation of the first aspect; and / or, a communication device equipped with the chip system executes any method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0046] In the seventh aspect, an embodiment of the present application provides a computer program product, which includes: a computer program code, when the computer program code is executed by a communication unit, a processing unit or a transceiver, or a processor of a communication device, the communication device executes the above-mentioned first aspect or any method in any possible implementation of the first aspect; and / or, a communication device equipped with a chip system executes the above-mentioned second aspect or any method in any possible implementation of the second aspect.

[0047] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a program, and the program enables a communication device (for example, a terminal device) to execute any method of the above-mentioned first aspect or any possible implementation of the first aspect; and / or enables a communication device (for example, a network device) equipped with a chip system to execute any method of the above-mentioned second aspect or any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram of a communication transmission scenario provided for this application;

[0049] Figure 2 A schematic diagram of a scenario for saving power consumption of a terminal device provided in the present application;

[0050] Figure 3 A schematic diagram of a communication transmission method provided by this application;

[0051] Figure 4 A schematic diagram showing the difference in detection performance of different numbers of antennas provided in this application;

[0052] Figure 5 A schematic diagram of a process for a first network device provided in the present application to send indication information to a terminal device to realize energy saving;

[0053] Figure 6 A schematic diagram of a flow chart of a second network device providing in the present application sending indication information to a terminal device to realize energy saving;

[0054] Figure 7 A schematic diagram of a process for a terminal device to send indication information to a network device to achieve energy saving provided in this application;

[0055] Figure 8 A schematic diagram of the first terminal device provided for this application;

[0056] Fig. 9 A schematic diagram of the second terminal device provided for this application;

[0057] Fig.10 A schematic diagram of the first network device provided for this application;

[0058] Fig.11 A schematic diagram of the second network device provided for this application. DETAILED DESCRIPTION

[0059] The specific implementation process of the application embodiment will be described in detail below with reference to the accompanying drawings.

[0060] First, the scenarios to which the embodiments of the present application can be applied are introduced. The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, worldwide interoperability for microwave access (WiMAX) communication system, future fifth generation (5G) system, such as new radio access technology (NR), and future communication systems, such as 6G system.

[0061] Take the 5G system (also called the new radio system) as an example. Specifically, the 5G system defines new communication scenarios: ultra-reliable and low-latency communication (URLLC), enhanced mobile broadband (eMBB) and massive machine type communication (mMTC). These communication scenarios have more stringent requirements on communication quality and power saving. Therefore, in the scheduling process, it is particularly important to more effectively save power consumption of terminal equipment without affecting PDCCH performance.

[0062] To facilitate understanding of the embodiments of the present application, first Figure 1 The communication system shown in FIG. 1 is used as an example to describe in detail the communication system applicable to the embodiment of the present application. Figure 1 As shown, the communication system includes a network device 100 and a terminal device 101 .

[0063] The network device 100 is a device that provides wireless communication functions for the terminal device 101 in the communication system, and can connect the terminal device 101 to the wireless network. The network device 100 can also be called a base station (BS). At present, some examples of network devices 100 are: the next generation base station (g nodeB, gNB) in 5G, evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B (node ​​B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), mobile switching center, etc.

[0064] The terminal device 101 is a device that provides voice and / or data connectivity to a user, and may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal in the embodiment of the present application may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

[0065] The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. It is known to those skilled in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems. It should be understood that Figure 1 This is a simplified schematic diagram for ease of understanding only. The communication system may also include other network devices or other terminal devices. Figure 1 Not drawn in.

[0066] Some of the terms used in the embodiments of the present application are explained below for easier understanding.

[0067] 1) The channel state information (CSI) in the embodiment of the present application refers to the channel properties of the communication link in the field of wireless communications. Generally, the receiving end evaluates the CSI and feeds it back to the transmitting end. The content of CSI may include: channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CSI-RS resource indicator, CRI), SS / PBCH block resource indicator (SSBRI), layer indicator (LI), rank indicator (RI), L1-RSRP.

[0068] During the communication process, the network device can select communication parameters according to the CSI, so that the channel / signal transmission adapts to the current channel conditions. Especially for multi-antenna systems, the CSI provides a guarantee for high-reliability and high-speed communication.

[0069] 2) The signal-to-noise ratio (SNR) in the embodiments of the present application, i.e., the ratio of the power between the useful signal and the noise signal, is often expressed in decibels (dB). The signal-to-noise ratio is an important parameter to measure the degree of influence of noise on the signal. In a communication system, the size of the SNR reflects the quality of the current channel. The larger the signal-to-noise ratio, the better the quality of the wireless communication channel. In practical applications, the signal-to-noise ratio can often be improved by improving the transmission means and enhancing the equipment capabilities.

[0070] 3) The CQI in the embodiment of the present application is a channel quality indicator, which represents the quality of the current channel, corresponds to the size of the signal-to-noise ratio, and is the result of quantifying the signal-to-noise ratio. When the CQI value is 0, the channel quality is the worst; the larger the CQI value, the better the channel quality.

[0071] 4) The physical downlink control channel (PDCCH) in the embodiment of the present application is used to carry scheduling and other control information, and is used for at least one or more of the following functions:

[0072] (1) Carrying downlink scheduling information, also known as downlink assignment information, which includes PDSCH transmission parameters so that terminal devices can receive PDSCH. PDSCH is used to carry downlink data sent by network devices to terminal devices;

[0073] (2) Carrying uplink scheduling information, which is also called uplink grant information, includes PUSCH transmission parameters so that the terminal device can send PUSCH to the network device. PUSCH is used to carry uplink data sent by the terminal device to the network device.

[0074] The information carried by the PDCCH may be referred to as downlink control information (DCI).

[0075] A PDCCH is sent in the form of a control channel element (CCE), which can also be called that the time-frequency resources of a PDCCH include one or more CCEs. Among them, a CCE is composed of multiple resource element groups (REGs), for example, a CCE is composed of 6 REGs, where 1 REG is equal to 1 resource block (RB) on an orthogonal frequency division multiplexing (OFDM) symbol, and 1 REG is composed of 12 resource elements (REs), and the 12 REs in a REG are numbered from 0 to 11.

[0076]

[0077] Table 1 Aggregation levels supported by PDCCH

[0078] As shown in Table 1, PDCCH may support different aggregation levels (AL), for example, the aggregation levels supported by PDCCH may include {1, 2, 4, 8, 16}, etc. The aggregation level indicates the number of CCEs occupied by a candidate PDCCH.

[0079] For example, as shown in Table 1, if the aggregation level supported by the PDCCH is 4, it means that the candidate PDCCH occupies 4 CCEs. In actual applications, the network device will determine the aggregation level used by the current PDCCH based on factors such as channel quality. For example, if the PDCCH is sent to a terminal device with very good downlink channel quality (for example, a terminal device located at the center of the cell), the network device can use aggregation level 1 to send the PDCCH; if the PDCCH is sent to a terminal device with very poor downlink channel quality (for example, a terminal device located at the edge of the cell), the network device can use aggregation level 8 or even 16 to send the PDCCH to achieve sufficient robustness.

[0080] 5) The Physical Downlink Shared Channel (PDSCH) in the embodiment of the present application is a type of physical downlink channel and is a downlink channel that carries user data. Usually, the transmission of PDSCH is scheduled by PDCCH.

[0081] 6) The block error rate (BLER) in the embodiments of the present application is a type of metric that represents the ratio of erroneous blocks to the total number of received blocks and is mainly used to measure system performance.

[0082] 7) The minimum time slot offset (minimum K0) of the scheduling in the embodiment of the present application indicates the minimum time slot offset between the PDCCH and the scheduled PDSCH. The time unit of the time domain parameter mentioned in the embodiment of the present application can be extended to symbol, time slot, frame, subframe, millisecond, second, etc., and is not limited to "time slot".

[0083] Through the introduction of the above application scenarios in the embodiments of the present application, the process of saving power consumption of the terminal device is specifically introduced below. At present, during the communication between the terminal device and the network device, the more antennas the terminal device has working, the greater the power consumption of the terminal device. Therefore, one way for the terminal device to save power consumption is to save the power consumption of the terminal device by turning off part of the antennas when there is no need to transmit data with the network device, that is, to reduce the number of receiving antennas receiving the PDCCH. Among them, during the scheduling process, take the following behavior as an example, the network device will schedule PDSCH to the terminal device through PDCCH, and the transmission rate of PDSCH is related to the number of layers of PDSCH transmission. When the number of layers is reduced, the transmission rate will decrease.

[0084] Furthermore, the number of layers of PDSCH transmission is also related to the number of antennas, that is, the number of receiving antennas used by the terminal device to receive PDSCH must be greater than or equal to the number of layers of PDSCH transmission. For example, if the maximum number of layers of PDSCH transmission configured by the network device to the terminal device is 4, then the network device assumes that the terminal device has at least 4 receiving antennas. Therefore, when the terminal device and the network device need to transmit data, in order to ensure the transmission rate of PDSCH scheduled by the network device to the terminal device through PDCCH, the terminal device can turn on the above-mentioned closed receiving antenna again to receive PDSCH.

[0085] In addition, during the communication between the terminal device and the network device, from the time domain perspective, if the time slot offset between the PDCCH and the scheduled PDSCH is greater than 0, that is, the scheduled PDSCH and the PDCCH are not in the same time slot, the terminal device can reduce unnecessary data cache and relax the processing time of the PDCCH, thereby also achieving the effect of saving the power consumption of the terminal device.

[0086] When the power consumption of the terminal device is saved from the perspective of the spatial domain, the terminal device needs a switching time Y when turning on or off the receiving antenna. Therefore, in the prior art, when the power consumption of the terminal device is saved from the spatial domain, the cross-time slot scheduling method in the time domain can also be combined, so that the time slot offset between the PDCCH and the scheduled PDSCH can cover the antenna switching time. That is, as long as the value of minimum K0 used to represent the minimum time slot offset of the scheduling is appropriate, the minimum K0 can cover the antenna switching time Y.

[0087] For example, assuming that the number of receiving antennas supported or configured by the terminal device is 4, denoted as 4Rx, and the terminal device only uses 2Rx to detect PDCCH for energy saving. When the terminal device switches from 2Rx to 4Rx, the required switching time is Y, then the network device needs to set the minimum K0 to minimum K0>=Y.

[0088] Therefore, when the network device does not need to perform data scheduling, the terminal device can only use 2Rx to detect PDCCH in order to save power consumption of the terminal device. When the network device needs to perform data scheduling, because minimum K0>=Y, the terminal device has enough time to switch from 2Rx to 4Rx to receive PDSCH.

[0089] It should be noted that, when the terminal device and the network device are transmitting and receiving PDCCH, the terminal device will periodically blindly detect PDCCH, but the network device may not necessarily send PDCCH. Therefore, when the terminal device detects PDCCH from the network device, empty detection often occurs, that is, the base station does not send PDCCH. Therefore, those skilled in the art can understand that when the terminal device detects PDCCH from the network device, it includes the situation that the terminal device receives PDCCH sent by the network device, and also includes the situation that the terminal device has empty detection.

[0090] Among them, the general process of the existing integrated space domain and time domain to save the power consumption of terminal equipment is as follows: Figure 2 As shown, it includes: the base station indicates the minimum slot offset minimum K0 for scheduling to the terminal device. Assuming that minimum K0=1, the terminal device uses 2 antennas (2Rx) to receive and detect PDCCH. When the base station has data to schedule, it sends scheduling downlink control information (downlink control information, DCI) to the terminal device through PDCCH.

[0091] After detecting the scheduling DCI, the terminal device will turn on 4Rx. Since minimum K0>0 at this time, the terminal device has enough switching time to turn on 4Rx. After the terminal device turns on 4Rx, it uses 4Rx to receive PDCCH and PDSCH, and the terminal device can also start a timer to switch from 4Rx to 2Rx. Figure 2 The PDCCHonly shown in indicates that the base station does not send PDCCH. The timer is used to re-time each time the terminal device receives a schedule. When the timer times out, the terminal device turns off some receiving antennas and falls back to 2Rx to save power consumption.

[0092] However, the main problem with the above-mentioned power saving method is that during the communication process, the base station is not aware of the change in the number of antennas used by the terminal device to receive PDCCH. Therefore, when the terminal device switches the number of receiving antennas in order to save power consumption, for example, the terminal device uses 2Rx after switching, but the base station may think that the terminal device is using 4Rx, resulting in inappropriate selection of PDCCH parameters when the base station sends PDCCH, such as inappropriate selection of AL (aggregation level), etc., which leads to problems such as reduced performance of the terminal device in detecting PDCCH.

[0093] To solve this problem, an embodiment of the present application provides a communication transmission method, which will be described in detail below through the drawings and examples.

[0094] In addition, the terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The following at least one item (items) or similar expressions refer to any combination of these items, including any combination of single items (items) or plural items (items). For example, at least one item (items) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0095] Unless otherwise stated, ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, timing, priority or importance of multiple objects. In addition, the terms "including" and "having" in the embodiments of the present application, the claims and the drawings are not exclusive. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, and may also include steps or modules that are not listed.

[0096] like Figure 3 As shown, the communication transmission method provided in the embodiment of the present application includes the following specific processes:

[0097] Step 300: The network device indicates to the terminal device a scheduling minimum time slot offset minimum K0;

[0098] Furthermore, in addition to indicating minimum K0 to the terminal device, the network device also configures a time domain resource allocation list of PDSCH to the terminal device through Radio Resource Control (RRC) signaling.

[0099] The time domain resource allocation list includes a set of time slot offsets K0 between the PDCCH and the scheduled PDSCH and a set of starting symbols and lengths of the PDSCH in this time slot. The K0 value in the K0 set may be greater than or equal to 0, and multiple values ​​may be configured for the K0, such as the time slot offset K0 may be configured as {0, 1, 2, 3, 4, 5, 6}.

[0100] The minimum K0 indicated by the network device to the terminal device may be a value in the K0 set or other values. Minimum K0 reflects the smallest available K0 value in the K0 set. For example, if minimum K0=1, the available K0 values ​​in the K0 set are 1, 2, 3, 4, 5, and 6.

[0101] In the present application, the network device indicates the minimum K0 to the terminal device in any manner. For example, the network device may indicate the minimum K0 to the terminal device directly or indirectly through RRC, MAC CE, or DCI signaling. The terminal device may also obtain the minimum K0 directly or indirectly.

[0102] Step 301: The terminal device receives minimum K0 sent by the network device;

[0103] Furthermore, the terminal device may also receive the time domain resource allocation list configured by the network device.

[0104] Step 302: The network device sends second indication information to the terminal device; optionally, the second indication information is used to determine a first receiving state of the terminal device for detecting PDCCH; or, the second indication information is used to determine a first antenna number for the terminal device to detect PDCCH, and the first antenna number is less than the maximum receiving antenna number configured or supported by the terminal device.

[0105] In one implementation, the first receiving state is a receiving mode that can save power consumption of the terminal device. When the terminal device receives the PDCCH in different receiving states, the power consumption of the terminal device is different. Furthermore, when the terminal device described in the embodiment of the present application does not perform energy saving, the receiving state of the terminal device can be represented as the second receiving state.

[0106] In another implementation, the receiving state described in the embodiment of the present application can also be specifically reflected in that the terminal device uses a certain number of antennas to detect PDCCH, and the terminal device uses different numbers of receiving antennas to correspond to different receiving states of the terminal device. For example, the first receiving state is that the terminal device uses the first number of antennas to detect PDCCH, and the first number of antennas is less than the maximum number of receiving antennas configured or supported by the terminal device. The second receiving state is that the terminal device uses the second number of antennas to detect PDCCH. Among them, the second number of antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device. The second number of antennas is equal to the number of receiving antennas for the terminal device to receive PDSCH.

[0107] The first receiving state in step 302 of the embodiment of the present application mainly represents the receiving state after the terminal device turns off some antennas to save power consumption of the terminal device. The first receiving state can also be understood as the terminal device using the first number of antennas to detect PDCCH. The first number of antennas is less than the second number of antennas.

[0108] For example, if the current second receiving state is a state in which the terminal device detects PDCCH using 4Rx, the first receiving state may be represented as a receiving state after the terminal device switches the current 4Rx to 2Rx. For another example, if the current second receiving state is a state in which the terminal device detects PDCCH using 8Rx, the first receiving state may be represented as a receiving state after the terminal device switches the current 8Rx to 4Rx or 2Rx.

[0109] It should be noted that the above description of the term "receiving status" is only for a clearer introduction to the embodiments of the invention of the present application and is not intended to be limiting. The term "receiving status" is a well-known term in the art and those skilled in the art should be aware of its meaning.

[0110] Of course, in step 302, the terminal device may also send instruction information to the network device;

[0111] Step 303: When minimum K0 is greater than 0, the terminal device detects PDCCH in the first receiving state;

[0112] In this embodiment, detecting PDCCH refers to the action of the terminal device performing PDCCH detection, and does not limit the result of whether PDCCH is detected. Detecting PDCCH can also be equivalent to receiving PDCCH. It includes the situation that the terminal device receives PDCCH sent by the network device, and also includes the situation that the terminal device performs an empty detection.

[0113] Step 304: When minimum K0 is greater than 0 and the network device needs to send a PDCCH to the terminal device, the network device sends a PDCCH suitable for reception in the first reception state to the terminal device.

[0114] It should be noted that, in actual execution, the above steps 303 and 304 may not be performed in any order.

[0115] Through this method, when the embodiment of the present invention saves the power consumption of the terminal device by switching the receiving state of the currently received PDCCH to the first receiving state, if the terminal device receives the indication information sent by the network device, it is determined that the PDCCH can be detected through the first receiving state; or, if the terminal device determines that the receiving state of the currently received PDCCH needs to be switched to the first receiving state, the indication information is sent to the network device; that is, when the network device and the terminal device communicate, the other party is notified by sending the indication information to the other party, so that the network device knows that the terminal device uses the first receiving state to detect the PDCCH, thereby ensuring that the terminal device can normally receive the PDCCH sent by the network device when the power consumption of the terminal device is saved by switching the current receiving state to the first receiving state.

[0116] Through the introduction of the above application scenarios in the embodiments of the present application, the process of saving power consumption of the terminal device is specifically introduced below. Among them, different receiving states in the embodiments of the present application can reflect different detection performances when the terminal device detects PDCCH, for example, different signal-to-noise ratio thresholds that meet the same BLER requirements. The second receiving state introduced in the embodiments of the present application can represent the receiving state of receiving PDCCH when minimum K0=0. The signal-to-noise ratio threshold of the first receiving state under the same time-frequency resources, the same channel conditions and the same BLER requirements is higher than the signal-to-noise ratio threshold of the second receiving state, that is, the detection performance of detecting PDCCH in the second receiving state is higher than that of the first receiving state.

[0117] Further, in order to ensure that the terminal device can still normally receive the PDCCH sent by the network device in the first receiving state, the network device can adjust the PDCCH to be sent to the terminal device in a variety of ways, which are not limited to the following:

[0118] 1. Adjustment method 1:

[0119] The network device adjusts the parameters of the PDCCH that needs to be sent to the terminal device by means of compensation.

[0120] The parameters may include but are not limited to part or all of AL, SNR, CQI, CSI and BLER.

[0121] like Figure 4As shown, assuming that the second receiving state is the state in which the terminal device uses 4Rx to detect PDCCH, and the first receiving state is the state in which the terminal device uses 2Rx to detect PDCCH, then under the same time-frequency resources, the same channel conditions and a specific BLER, for example, when the BLER is 1%, it can be seen that the detected SNR must be greater than or equal to SNR2 to ensure that the terminal device can receive PDCCH at 2Rx. The detected SNR must be greater than or equal to SNR1 to ensure that the terminal device receives PDCCH at 4Rx.

[0122] It should be noted that Figure 4 The two curves shown in are not limited to representing the SNR detected using different numbers of receiving antennas.

[0123] That is to say, for the same time-frequency resources, the SNR threshold of 2Rx, that is, SNR2, must be higher than the SNR threshold of 4Rx, that is, SNR1, to ensure the same detection performance of 2Rx and 4Rx.

[0124] Therefore, the network device in the embodiment of the present application can ensure that the terminal device can still normally receive the PDCCH sent by the network device in the first receiving state by compensating 2Rx. Generally, the larger the resource used to send the PDCCH, the better the detection performance of the PDCCH.

[0125] The parameter AL reflects the resource size for sending the PDCCH. Therefore, the network device can compensate for the AL, that is, use more resources to send the PDCCH. For example, the larger the AL, Figure 4 The curve of 2Rx shown in FIG. 2 moves to the left. When the AL reaches a certain size, the Figure 4 2Rx and Figure 4 The 4Rx in is close, so that the SNR corresponding to the current channel quality is equal to SNR1, and the terminal device can also receive the PDCCH at 2Rx.

[0126] Furthermore, the present application also introduces a compensation factor for assisting the network device in determining the parameters of the PDCCH. The compensation factor in the present application is mainly used to compensate for one or more of the factors such as AL, SNR, CQI or CSI, BLER, etc.

[0127] Optionally, the network device can directly compensate for AL. When AL=1, it means that PDCCH occupies 1 CCE, and when AL=2, it means that PDCCH occupies 2 CCEs. Generally speaking, the better the channel quality and the less interference, the network device can select a smaller AL to send the PDCCH; conversely, the worse the channel quality and the greater the interference, the network device needs to select a larger AL to send the PDCCH.

[0128] For example, the network device needs to determine the AL of the PDCCH of 2Rx according to the channel quality of 4Rx. Assuming that the PDCCH of 4Rx requires AL=m, the network device needs to adjust the AL when sending the PDCCH: AL'=f(m, delta), where f() represents a functional relationship, m represents the AL required by the PDCCH of 4Rx, and delta represents the AL compensation factor, for example, the compensated AL'=delta*m. Therefore, the network device sends the PDCCH at AL'=delta*m.

[0129] Optionally, if the compensation factor is SNR, CQI or CSI, BLER, the network device adjusts the SNR, CQI or CSI, BLER, and then determines the AL of the PDCCH to be sent according to the adjusted SNR, CQI or CSI, BLER.

[0130] The quality of the channel can be characterized by SNR, CSI, and CQI. For example, the higher the CQI or SNR, the better the channel quality. BLER is an indicator of PDCCH detection performance. The higher the BLER, the better the reliability. For example, the BLER of PDCCH in the eMBB scenario is generally required to be 1%. The following takes SNR as an example to specifically introduce compensation for SNR. Before sending PDCCH, the network device selects the AL used to send the PDCCH based on the SNR.

[0131] Generally speaking, the channel quality measured by 4Rx is better than that measured by 2Rx, and the SNR of 4Rx is greater than that of 2Rx. When the network device determines the AL for sending the PDCCH by the SNR measured by 4Rx, assuming that the measured SNR is 2dB, the AL selected by the network device is 4. At this time, if the terminal device uses 2Rx, it may not receive the PDCCH sent by the network device when the AL is 4. This is because the SNR measured by the terminal device using 2Rx does not reach 2dB.

[0132] Therefore, if it is desired to ensure that the terminal device can also receive the PDCCH sent by the network device at 2Rx, the network device in the embodiment of the present application can compensate the PDCCH to be sent according to the compensation factor, that is, the network device determines the AL for sending the PDCCH using the compensated SNR. The compensated SNR can be expressed as SNR'=g(SNR, C), where g() represents the relationship between the SNR before compensation and the SNR after compensation, and C represents the SNR compensation factor.

[0133] Optionally, it is assumed that the formula for compensating the measured SNR using the compensation factor is the following formula 1:

[0134] SNR_A=(SNR_B-C)dB Formula 1

[0135] In the formula, SNR_A represents the SNR corresponding to the first receiving state, SNR_B represents the SNR corresponding to the second receiving state, and C represents the compensation factor.

[0136] Assuming that the compensation factor is 3dB and the SNR corresponding to 4Rx is 2dB, the SNR corresponding to 2Rx can be calculated to be -1dB by the above formula 1. Then, the network device determines AL according to the SNR corresponding to 2Rx. Assuming that the corresponding AL is 8 when the SNR is -1dB, the network device selects AL as 8 to send the PDCCH, thereby ensuring that the terminal device can receive the PDCCH sent by the network device with 2Rx.

[0137] Optionally, a compensation factor may be used to compensate for a specific BLER SNR threshold. The compensation formula may be expressed as Formula 2:

[0138] SNR_A=(SNR_B+C)dB Formula 2

[0139] In the formula, SNR_A represents the SNR threshold corresponding to the first receiving state, SNR_B represents the SNR threshold corresponding to the second receiving state, and C represents the compensation factor.

[0140] Assuming that the compensation factor is 3dB and the SNR threshold corresponding to 4Rx AL is 4 is 2dB, then the SNR threshold corresponding to 2Rx AL is 4 can be calculated to be 5dB through the above formula 2. Then, the network device determines AL according to the currently received SNR. Assuming that the currently received SNR is 2dB, which is less than the SNR threshold corresponding to 2Rx AL is 4, the network device selects AL of 8 to send the PDCCH at this time, thereby ensuring that the terminal device can receive the PDCCH sent by the network device with 2Rx.

[0141] Furthermore, the network device described in the embodiment of the present application can determine the compensation factor used to compensate the sent PDCCH during cross-time slot scheduling in a variety of ways, which are introduced below.

[0142] Determination method 1: Determine a compensation factor for performing a compensation operation according to a preset value of the protocol.

[0143] The network device and the terminal device specify the value of the compensation factor in the communication protocol. When the network device needs to compensate for the PDCCH sent to the terminal device, the network device determines the compensation factor according to the protocol, and then compensates the PDCCH to be sent according to the compensation factor.

[0144] Furthermore, the terminal device may also determine the first receiving state according to the compensation factor specified in the communication protocol with the network device. For example, assuming that the terminal device normally uses 8Rx to detect the state of PDCCH, when the terminal device needs to save energy by shutting down some antennas, the terminal device may determine the number of antennas to be shut down according to the compensation factor in the communication protocol.

[0145] Further, assuming that the terminal device believes that the compensation factor can only guarantee the normal reception of the terminal device at 4Rx, but cannot guarantee the reception of the terminal device at 2Rx. In order to ensure the normal reception of the PDCCH sent by the network device, the terminal device can determine to turn off 4Rx, that is, determine that the first receiving state is a state of using 4Rx to detect PDCCH.

[0146] Optionally, multiple compensation factors may be preset in the protocol. If multiple compensation factors are preset in the protocol, the network device selects a compensation factor from the multiple compensation factors preset in the protocol, and determines the parameters used by the PDCCH sent by the network device to the terminal device based on the selected compensation factor.

[0147] Determination method 2: The network device uses the compensation factor determined by itself as the compensation factor for performing the compensation operation.

[0148] For example, if the compensation factor determined by the network device itself is compensation factor 1, then when the network device needs to send a PDCCH, the network device can determine the parameters used for the PDCCH sent to the terminal device based on the compensation factor 1.

[0149] Optionally, the network device may define multiple compensation factors. When the network device needs to send PDCCH, the network device may select a compensation factor from the defined multiple compensation factors and determine the parameters used for the PDCCH sent to the terminal device based on the selected compensation factor.

[0150] For example, the network device defines multiple compensation factors, including compensation factors 1 to 9. When it is necessary to send a PDCCH, the network device selects a compensation factor from compensation factors 1 to 9. Assuming that the selected compensation factor is compensation factor 2, the network device determines the parameters used for the PDCCH sent to the terminal device according to the compensation factor 2.

[0151] Determination method 3: The network device determines the compensation factor reported by the terminal device as the compensation factor used to compensate the PDCCH sent to the terminal device.

[0152] For example, when the network device receives compensation factor 1 reported by terminal device 1, it determines compensation factor 1 as the compensation factor used to compensate the PDCCH sent to terminal device 1; when the network device receives compensation factor 2 reported by terminal device 2, it determines compensation factor 2 as the compensation factor used to compensate the PDCCH sent to terminal device 2.

[0153] Optionally, the terminal device may report multiple compensation factors. If the network device receives multiple compensation factors reported by the terminal device, the network device selects a compensation factor from the multiple compensation factors reported by the terminal device, and determines the parameters used by the PDCCH sent by the network device to the terminal device based on the selected compensation factor.

[0154] Further, when determining the compensation factor of the PDCCH parameter in the embodiment of the present application, it can be set according to actual needs, and the specific selection method can be but is not limited to the following selection method:

[0155] Optionally, the network device in the embodiment of the present application may define the same or different compensation factors for different terminal devices. The size of the compensation factor may be related to the location of the terminal device or the cell coverage, for example, a smaller compensation factor may be configured for a terminal device at the cell center or with good coverage, and a larger compensation factor may be configured for a terminal device at the cell edge or with poor coverage.

[0156] 2. Adjustment method 2:

[0157] The network device determines the PDCCH parameters and sends the PDCCH according to the CSI and / or CQI corresponding to the N reception states reported by the terminal device.

[0158] The terminal device will periodically receive CSI-RS to measure the downlink channel quality and feedback CSI and / or CQI to the network device. Assuming that the maximum number of antennas of the terminal device is 4Rx, the terminal device can use 2Rx to receive CSI-RS or 4Rx to receive CSI-RS. The network device can use the CSI and / or CQI fed back by the terminal device to determine the parameters of the PDCCH and the scheduling information of the PDSCH.

[0159] Among them, in the prior art, in order not to affect the scheduling of PDSCH by the network device, the terminal device defaults to using the number of antennas that can support the maximum number of layers configured by the network device to the terminal device to receive CSI-RS. For example, the maximum number of layers configured by the network device to the terminal device is 4, and the terminal device requires at least 4 antennas. The terminal device uses 4Rx to receive and measure CSI-RS, and feeds back the measured CSI and / or CQI to the network device.

[0160] In an embodiment of the present application, the network device may send an instruction to the terminal device, instructing the terminal device to report at least two types of CSI and / or CQI.

[0161] For example, assuming that the second receiving state of the terminal device is 4Rx, and the number of receiving antennas of the terminal device for receiving PDSCH is also 4Rx. The terminal device uses the number of receiving antennas in the second receiving state to receive CSI-RS. When the terminal device receives the instruction sent by the network device, the terminal device needs to feed back at least two types of CSI to the network device.

[0162] Specifically, it may include at least two of the following: the CSI corresponding to when the receiving state of the terminal device is 4Rx, the CSI corresponding to when the receiving state of the terminal device is 2Rx, and the CSI corresponding to when the receiving state of the terminal device is 1Rx.

[0163] Among them, among the at least two types of CSI or CQI fed back by the terminal device to the network device, it is necessary to ensure that the CSI or CQI corresponding to the number of receiving antennas in the second receiving state is included, so as to ensure that the network device can accurately schedule PDSCH to the terminal device.

[0164] Assume that the network device receives the CSI corresponding to 4Rx reported by the terminal device and the CSI corresponding to 2RX of the terminal device. At this time, when the network device needs to send PDCCH to the terminal device, it can determine the AL for sending PDCCH according to the received CSI corresponding to 2Rx, and send PDCCH to the terminal device.

[0165] Furthermore, in an embodiment of the present application, in order to ensure that the terminal device adopts the first receiving state to detect the PDCCH sent from the network device, the network device can timely adjust the PDCCH sent to the terminal device. Therefore, the terminal device switches the current receiving state to the first receiving state only after determining that the conditions for adjusting the second receiving state to the first receiving state are met. That is, when the terminal device determines that the conditions for shutting down some antennas are met, the current second antenna number is switched to the first antenna number.

[0166] In the embodiment of the present application, there are multiple situations in which the terminal device adjusts the current second receiving state to the first receiving state, which are not limited to the following situations:

[0167] Case 1: The terminal device receives indication information sent by the network device to indicate that the terminal device can adjust the second receiving state to the first receiving state.

[0168] The indication information sent by the network device to the terminal device can be sent via RRC signaling, MAC CE signaling or DCI signaling.

[0169] Furthermore, the indication information sent by the network device to the terminal device may include multiple situations, which are introduced below respectively.

[0170] Network side indication information 1: information about compensation of the sent PDCCH by the network device.

[0171] The network side indication information 1 indicates that the network device will compensate for the PDCCH that needs to be sent when sending the PDCCCH to the terminal device.

[0172] Therefore, when the terminal device receives the network side indication information 1 sent by the network device, it can be known that when the network device needs to send the PDCCH to the terminal device, the sent PDCCH will be compensated.

[0173] That is to say, in this case, it can be ensured that after the terminal device adjusts the second receiving state to the first receiving state, the PDCCH receiving performance is not affected, and the terminal device can correctly receive the PDCCH sent by the network device in the first receiving state. Therefore, after receiving the network side indication information 1 sent by the network device, in order to save the power consumption of the terminal device, the terminal device can adjust the current second receiving state of the terminal device to the first receiving state.

[0174] For example, assuming that the current receiving state of the terminal device is to detect the PDCCH from the network device through 4Rx. The network device sends the network side indication information 1 to the terminal device through RRC signaling. After receiving the network side indication information 1 sent by the network device, the terminal device can switch the current 4Rx of the terminal device to 2Rx in order to save the power consumption of the terminal device, that is, adjust the current second receiving state to the first receiving state.

[0175] Furthermore, the network side indication information 1 currently described may include, in addition to notification information indicating that the network device will compensate for the PDCCH when sending the PDCCH to the terminal device, a compensation factor used by the network device to compensate for the sent PDCCH.

[0176] Optionally, the network side indication information 1 includes a compensation factor, so that after receiving the network side indication information 1, the terminal device can judge whether the PDCCH compensated by the compensation factor of the network device is suitable for the first receiving state of the terminal device based on the compensation factor in the network side indication information 1.

[0177] If the terminal device determines based on the compensation factor that the PDCCH of the network device compensated by the compensation factor is not suitable for the first receiving state of the terminal device, the terminal device does not switch the receiving state to ensure normal reception of the PDCCH sent by the network device; or, if the terminal device determines based on the compensation factor that the PDCCH of the network device compensated by the compensation factor is not suitable for the first receiving state of the terminal device, the terminal device may send a notification message to the network device to notify the network device to reselect the compensation factor to compensate for the PDCCH to be sent, so as to ensure that the terminal device can normally receive the PDCCH sent by the network device in the first receiving state.

[0178] Optionally, the network side indication information 1 includes a compensation factor, so that after receiving the network side indication information 1, the terminal device can determine the first receiving state according to the compensation factor in the network side indication information 1. That is, the terminal device can determine the number of antennas to be turned off according to the compensation factor in the indication information.

[0179] For example, the second receiving state of the terminal device is 4Rx. After the terminal device receives the network side indication information 1 sent by the network device, it determines according to the compensation factor 1 included in the network side indication information 1 that the network device compensates the sent PDCCH according to the compensation factor 1. This can ensure that the terminal device can normally receive the PDCCH when the receiving state is 2Rx, but cannot ensure that the terminal device can normally receive the PDCCH when the receiving state is 1Rx.

[0180] Although the terminal device switches the number of working receiving antennas from 4Rx to 1Rx, the power consumption of the terminal device can be better saved. However, the compensation factor cannot guarantee that the terminal device correctly receives the PDCCH using 1Rx. Therefore, the terminal device can determine that the first receiving state is 2Rx according to the compensation factor 1, that is, after receiving the network side indication information 1 sent by the network device, the terminal device can switch the receiving state of 4Rx to the receiving state of 2Rx to receive the PDCCH in order to save the power consumption of the terminal device.

[0181] Furthermore, the network side indication information 1 may also only include the compensation factor, that is, only the compensation factor is sent to the terminal device. Thus, the terminal device determines that the second receiving state can be switched to the first receiving state according to the network side indication information 1, and subsequently, before sending the PDCCH to the terminal device, the network device compensates the PDCCH to be sent according to the compensation factor.

[0182] like Figure 5 As shown, in the embodiment of the present invention, the process of saving power consumption of the terminal device is performed by the network device sending the network side indication information 1 to the terminal device, and the specific steps include:

[0183] Step 500: The network device notifies the terminal device of minimum K0;

[0184] Step 501: The terminal device receives minimum K0 sent by the network device;

[0185] Step 502: the network device sends the network side indication information 1 to the terminal device;

[0186] Step 503: the terminal device receives the network side indication information 1 sent by the network device;

[0187] Step 504: When the terminal device determines that the current minimum K0 is not less than Y, the terminal device switches the receiving state of the PDCCH to the first receiving state;

[0188] Among them, Y is the switching time required for the terminal device to turn on and / or turn off the number of antennas.

[0189] Step 505: The terminal device detects the PDCCH sent by the network device in the first receiving state. Step 506: When the minimum K0 is not less than Y, the network device compensates the PDCCH to be sent to the terminal device according to the compensation factor in the network side indication information 1, and determines the parameters of the PDCCH;

[0190] Step 507: The network device sends the PDCCH to the terminal device according to the parameters of the PDCCH.

[0191] It should be noted that the above steps 500 and 502 may not be restricted in sequence, and the above steps 505, 506 and 507 may not be restricted in sequence.

[0192] Network side indication information 2: The terminal device receives indication information sent by the network device, indicating that the terminal device reports at least two types of CSI and / or CQI.

[0193] Because different numbers of receiving antennas correspond to different channel qualities, the CSI measured by the terminal device based on signals with different numbers of receiving antennas will be different.

[0194] For example, if the terminal device receives CSI-RS with 4Rx, the CSI corresponding to 4Rx is fed back, and the CQI is relatively large. If the terminal device receives CSI-RS with 2Rx, the CSI corresponding to 2Rx is fed back, and the CQI is relatively small.

[0195] According to the existing protocol, the terminal device receives CSI-RS using the maximum number of antennas that can support the maximum number of layers configured by the network device to the terminal device and feeds back the CSI and / or CQI corresponding to the number of antennas. When minimumK0>0, the network device does not know the channel quality corresponding to when the terminal device receives PDCCH in the first receiving state. Therefore, the network device cannot send PDCCH suitable for reception in the first receiving state to the terminal device when the terminal device adopts the first receiving state.

[0196] In an embodiment of the present application, when the terminal device receives the network side indication information 2 sent by the network device, the terminal device needs to report at least two types of CSI to the network device, and switch the current receiving state to the first receiving state when minimum K0 is not less than Y.

[0197] Further, it is assumed that the number of antennas corresponding to the second receiving state of the terminal device for receiving PDCCH is 4Rx, and the number of antennas corresponding to the first receiving state for receiving PDCCH is 2Rx. After the terminal device receives the network side indication information 2 sent by the network device, the terminal device still uses the number of receiving antennas in the second receiving state to receive CSI-RS, that is, uses 4Rx to receive CSI-RS, and uses the CSI-RS received by the four antennas to calculate and obtain the CSI corresponding to the second receiving state; and the terminal device uses the CSI-RS received by any two of the four antennas to calculate and obtain the CSI corresponding to the first receiving state. After determining the CSI corresponding to the first receiving state and the CSI corresponding to the second receiving state, the terminal device feeds back the CSI corresponding to the second receiving state and the CSI corresponding to the first receiving state to the network device. When the network device receives the feedback information reported by the terminal device, it is assumed that the CSI corresponding to 4Rx reported by the terminal device is CSI_1, and the CSI corresponding to 2Rx reported by the terminal device is CSI_2. Therefore, when minimum K0>=Y, the network device can use the received CSI_2 corresponding to 2Rx to determine the parameters of the PDCCH sent to the terminal device and send the PDCCH; and use the CSI_1 corresponding to 4Rx to determine the scheduling information of the PDSCH.

[0198] When the network device needs to send PDCCH to the terminal device, the PDCCH parameters are determined by the CSI or CQI information corresponding to the received 2Rx, which can more effectively ensure the accuracy of the PDCCH parameter selection.

[0199] like Figure 6 As shown, in the embodiment of the present invention, the process of saving power consumption of the terminal device is performed by the network device sending the network side indication information 2 to the terminal device, and the specific steps include:

[0200] Step 600: The network device notifies the terminal device of minimum K0;

[0201] Step 601: The terminal device receives minimum K0 sent by the network device;

[0202] Step 602: the network device sends the network side indication information 2 to the terminal device;

[0203] Step 603: the terminal device receives the network side indication information 2 sent by the network device;

[0204] Step 604: When the terminal device determines that the minimum K0 is not less than Y, the receiving state of the detected PDCCH is switched to the first receiving state;

[0205] Wherein, Y is the switching time required for the terminal device to turn on and / or turn off the number of antennas;

[0206] Step 605: The terminal device receives the CSI-RS using the number of receiving antennas in the second receiving state, measures the CSI or CQI corresponding to the second receiving state and the CSI or CQI corresponding to the first receiving state, and feeds back the measurement result to the network device;

[0207] Step 606: The network device receives information of CSI or COI measured by two numbers of antennas reported by the terminal device;

[0208] Step 607: When the network device needs to send a PDCCH to the terminal device, the network device determines the parameters of the PDCCH according to the CSI or CQI corresponding to the first receiving state, and sends the PDCCH to the terminal device.

[0209] It should be noted that the above steps 600 and 602 may not be performed in any order.

[0210] Case 2: The terminal device sends indication information to the network device to instruct the terminal device to adjust the current receiving state to the first receiving state.

[0211] Terminal side indication information: the terminal device sends information for compensating the PDCCH to the network device.

[0212] The terminal side indication information instructs the network device to compensate the PDCCH when sending the PDCCH to the terminal device.

[0213] For example, when the terminal device needs to switch the current second receiving state to the first receiving state to save terminal power consumption, the terminal device sends the terminal side indication information to the network device. After receiving the terminal side indication information, the network device compensates for the PDCCH that needs to be sent to the terminal device, thereby ensuring that when the terminal device adjusts the receiving state to the first receiving state, it will not affect the PDCCH reception performance and can normally receive the PDCCH sent by the network device.

[0214] Furthermore, the terminal-side indication information may include a compensation factor determined by the terminal device, that is, the terminal device sends the compensation factor to the network device, and after the network device receives the compensation factor, it can confirm that the receiving state of the terminal device is the first receiving state. Then, the network device compensates the PDCCH that needs to be sent to the terminal device according to the compensation factor and determines the parameters of the PDCCH. Since the terminal device is more aware of the downlink channel quality, the terminal device can determine the compensation factor and report the compensation factor to the network device.

[0215] Optionally, the number of compensation factors included in the terminal side indication information may be one or more, that is, the terminal device may determine multiple compensation factors and carry the determined multiple compensation factors in the terminal side indication information 1 and report them to the network device.

[0216] Furthermore, the terminal side indication information may also include information of at least two CSIs and / or CQIs. For example, it is assumed that the number of antennas corresponding to the second receiving state of the terminal device for receiving PDCCH is 4Rx, and the number of antennas corresponding to the first receiving state for receiving PDCCH is 2Rx. When the terminal device needs to switch the current receiving state of receiving PDCCH to the first receiving state to save power consumption of the terminal device, the terminal device uses the number of receiving antennas of the second receiving state to receive CSI-RS, that is, uses 4Rx to receive CSI-RS, and uses the CSI-RS received by the four antennas to calculate the CSI corresponding to the second receiving state; and the terminal device uses the CSI-RS received by any two of the four antennas to calculate the CSI corresponding to the first receiving state. After determining the CSI corresponding to the first receiving state and the CSI corresponding to the second receiving state, the terminal device sends terminal side indication information containing information of the at least two CSIs and / or CQIs to the network device. After the network device receives the terminal side indication information, it can confirm that the receiving state of the terminal device is the first receiving state. Then, when the network device sends PDCCH to the terminal device, it determines the PDCCH parameters according to the CSI and / or CQI corresponding to the number of antennas in the first receiving state.

[0217] like Figure 7 As shown, in the embodiment of the present invention, the terminal device sends the terminal side indication information 1 to the network device to save power consumption of the terminal device, and the specific steps include:

[0218] Step 700: the network device notifies the terminal device of minimum K0;

[0219] Step 701: The terminal device receives minimum K0 sent by the network device;

[0220] Step 702: The terminal device sends the terminal side indication information to the network device;

[0221] Among them, if the terminal side indication information includes information of at least two CSIs and / or CQIs, then before step 702, the terminal device also needs to use the number of receiving antennas in the second receiving state to receive CSI-RS, and calculate the CSI and / or CQI corresponding to the first receiving state and the CSI and / or CQI corresponding to the second receiving state.

[0222] Step 703: The network device receives the terminal side indication information sent by the terminal device;

[0223] Step 704: When the terminal device determines that the minimum K0 is not less than Y, the receiving state of the detected PDCCH is switched to the first receiving state; wherein Y is the switching time required for the terminal device to turn on and / or turn off the number of antennas;

[0224] Step 705: After receiving the terminal side indication information sent by the terminal device, the network device determines the parameters of the PDCCH when sending the PDCCH to the terminal device;

[0225] Optionally, when the terminal side indication information includes a compensation factor, the network device may compensate the PDCCH to be sent to the terminal device according to the compensation factor, and determine the parameters of the PDCCH;

[0226] Optionally, when the terminal side indication information includes CSI and / or CQI corresponding to a first reception state and CSI and / or CQI corresponding to a second reception state, the network device determines the parameters of the PDCCH according to the CSI and / or CQI corresponding to the first reception state when sending the PDCCH to the terminal device;

[0227] Optionally, when the terminal side indication information only indicates that the network device compensates the PDCCH when sending the PDCCH to the terminal device, that is, there is no need to indicate the compensation factor and the CSI of different reception states, then when the network device sends the PDCCH to the terminal device, it can compensate the PDCCH according to the compensation factor specified in the protocol or the compensation factor determined by itself, and determine the parameters of the PDCCH;

[0228] Step 706: The network device sends a PDCCH to the terminal device.

[0229] It should be noted that Figure 5-7 The description of the first receiving state, the second receiving state, the minimum K0, etc. involved in the embodiments described in Figure 3 Similar, no further elaboration is needed here.

[0230] Optionally, in an embodiment of the present application, a threshold duration may also be set for the network device and / or terminal device to trigger the network device to compensate for the PDCCH that needs to be sent and to trigger the terminal device to switch the current receiving state to the first receiving state when no information requesting scheduling data is sent to the terminal device within the threshold duration.

[0231] For example, the threshold duration set by the network device and the terminal device is A milliseconds, and the network device does not send information requesting scheduling data to the terminal device within A milliseconds, then after the threshold duration, the network device needs to compensate for the PDCCH when sending the PDCCH to the terminal device; if the terminal device does not receive the information requesting scheduling data sent by the network device within A milliseconds, then after the threshold duration, the terminal device will switch the current receiving state to the first receiving state.

[0232] Optionally, a timer may be added to the network device and / or the terminal device to determine whether a threshold duration has been reached.

[0233] Based on the above embodiments, Figure 8 As shown, the embodiment of the present application further provides a terminal device, which includes a processor 800, a memory 801, and a transceiver 802;

[0234] The processor 800 is responsible for managing the bus architecture and general processing, and the memory 801 can store data used by the processor 800 when performing operations. The transceiver 802 is used to receive and send data under the control of the processor 800 to perform data communication with the memory 801.

[0235] The bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 800 and memory represented by memory 801. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 800 when performing operations.

[0236] The process disclosed in the embodiment of the present invention can be applied to the processor 800, or implemented by the processor 800. In the implementation process, each step of the signal processing process can be completed by the hardware integrated logic circuit or software instructions in the processor 800. The processor 800 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present invention. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware processor to be executed, or the hardware and software modules in the processor are combined and executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 801, and the processor 800 reads the information in the memory 801 and completes the steps of the signal processing process in combination with its hardware.

[0237] Specifically, the processor 800 is used to read the program in the memory 801 and execute:

[0238] Used to receive a scheduling minimum time slot offset indicated by a network device; receive first indication information sent by the network device; or, send second indication information to the network device; wherein the first indication information and / or the second indication information is used to determine a first receiving state of the terminal device for detecting a physical downlink control channel PDCCH; when the scheduling minimum time slot offset is greater than 0, the first receiving state is used to detect PDCCH.

[0239] Among them, in addition to receiving the minimum K0 indicated by the network device, the terminal device in the embodiment of the present application also receives the time domain resource allocation list of the PDSCH configured by the network device through RRC signaling. The time domain resource allocation list includes a set of time slot offsets K0 between the PDCCH and the scheduled PDSCH and a set of starting symbols and lengths of the PDSCH in this time slot. The K0 value in the K0 set can be greater than or equal to 0, and multiple values ​​can be configured for the K0, such as the time slot offset K0 can be configured as {0, 1, 2, 3, 4, 5, 6}.

[0240] The minimum K0 indicated by the network device received by the terminal device may be a value in the K0 set or other values. Minimum K0 reflects the smallest available K0 value in the K0 set. For example, if minimum K0=1, the available K0 values ​​in the K0 set are 1, 2, 3, 4, 5, and 6.

[0241] In the present application, the terminal device receives the minimum K0 indicated by the network device in any manner. For example, the network device may indicate the minimum K0 to the terminal device directly or indirectly through RRC, MAC CE, or DCI signaling. The terminal device may also obtain the minimum K0 directly or indirectly.

[0242] In one implementation, the first receiving state is a receiving state that can save power consumption of the terminal device. When the terminal device receives the PDCCH in different receiving states, the power consumption of the terminal device is different.

[0243] Furthermore, when the terminal device described in the embodiment of the present application is not performing energy saving, the receiving state of the terminal device can be represented as a second receiving state.

[0244] In a possible implementation method, the first receiving state is used to indicate that the terminal device uses a first number of antennas to detect the PDCCH; wherein the first number of antennas is less than a maximum number of receiving antennas configured or supported by the terminal device.

[0245] In a possible implementation method, the first indication information includes at least one of the following:

[0246] When the network device needs to send a PDCCH to the terminal device, the network device compensates the sent PDCCH; or,

[0247] The terminal device reports at least two types of channel state information CSI and / or channel quality indication CQI information; or,

[0248] A compensation factor used to assist the network device in determining PDCCH parameters.

[0249] Optionally, the compensation factor described in the embodiment of the present application is mainly used to compensate for one or more factors such as AL, SNR, CQI or CSI, BLER, etc.

[0250] In a possible implementation method, the second indication information is used to indicate at least one of the following:

[0251] A compensation factor for assisting the network device in determining a PDCCH parameter; or,

[0252] At least two types of CSI and / or CQI information determined by the terminal device; or,

[0253] When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

[0254] In a possible implementation method, the processor 800 is specifically configured to:

[0255] When the scheduling minimum time slot offset is not less than Y, the first receiving state is used to detect PDCCH; wherein Y is the time required for the terminal device to turn on and / or turn off the antenna.

[0256] In a possible implementation method, the processor 800 is further configured to:

[0257] The terminal device uses the maximum number of receiving antennas configured or supported by the terminal device to receive the signal state information reference signal CSI-RS, and calculates N CSIs and / or CQIs corresponding to N receiving states; the terminal device reports the N CSIs and / or CQIs to the network device; wherein the N receiving states include a first receiving state.

[0258] In a possible implementation method, the processor 800 is further configured to:

[0259] The terminal device receives the CSI-RS in a second receiving state, and calculates a first CSI and / or a first CQI corresponding to the first receiving state and a second CSI and / or a second CQI corresponding to the second receiving state;

[0260] The terminal device uses the first CSI and / or first CQI and the second CSI and / or second CQI as the CSI and / or CQI reported to the network device;

[0261] Among them, the number of first receiving antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of the second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

[0262] In a possible implementation method, the first indication information includes a compensation factor for assisting the network device in determining a PDCCH parameter.

[0263] In a possible implementation method, the processor 800 is specifically configured to:

[0264] If no information requesting scheduling data sent by the network device is received within the threshold time length, when the scheduling minimum time slot offset is greater than 0, the first receiving state is used to detect the PDCCH.

[0265] like Fig. 9As shown, the present invention provides a terminal device, characterized in that the terminal device includes: at least one processing unit 900, at least one storage unit 901 and at least one communication unit 902, wherein the communication unit 902 is used to receive and send data under the control of the processing unit 900, and the storage unit 901 stores a program code, and when the program code is executed by the processing unit 900, the processing unit 900 performs the following process:

[0266] Used to receive a scheduling minimum time slot offset indicated by a network device; receive first indication information sent by the network device; or, send second indication information to the network device; wherein the first indication information and / or the second indication information is used to determine a first receiving state of the terminal device for detecting a physical downlink control channel PDCCH; when the scheduling minimum time slot offset is greater than 0, the first receiving state is used to detect PDCCH.

[0267] Among them, in addition to receiving the minimum K0 indicated by the network device, the terminal device in the embodiment of the present application also receives the time domain resource allocation list of the PDSCH configured by the network device through RRC signaling. The time domain resource allocation list includes a set of time slot offsets K0 between the PDCCH and the scheduled PDSCH and a set of starting symbols and lengths of the PDSCH in this time slot. The K0 value in the K0 set can be greater than or equal to 0, and multiple values ​​can be configured for the K0, such as the time slot offset K0 can be configured as {0, 1, 2, 3, 4, 5, 6}.

[0268] The minimum K0 indicated by the network device received by the terminal device may be a value in the K0 set or other values. Minimum K0 reflects the smallest available K0 value in the K0 set. For example, if minimum K0=1, the available K0 values ​​in the K0 set are 1, 2, 3, 4, 5, and 6.

[0269] In the present application, the terminal device receives the minimum K0 indicated by the network device in any manner. For example, the network device may indicate the minimum K0 to the terminal device directly or indirectly through RRC, MAC CE, or DCI signaling. The terminal device may also obtain the minimum K0 directly or indirectly.

[0270] In one implementation, the first receiving state is a receiving state that can save power consumption of the terminal device. When the terminal device receives the PDCCH in different receiving states, the power consumption of the terminal device is different.

[0271] Furthermore, when the terminal device described in the embodiment of the present application is not performing energy saving, the receiving state of the terminal device can be represented as a second receiving state.

[0272] In a possible implementation method, the first receiving state is used to indicate that the terminal device uses a first number of antennas to detect the PDCCH;

[0273] The number of the first antennas is less than the maximum number of receiving antennas configured or supported by the terminal device.

[0274] In a possible implementation method, the first indication information includes at least one of the following:

[0275] When the network device needs to send a PDCCH to the terminal device, the network device compensates the sent PDCCH; or,

[0276] The terminal device reports at least two types of channel state information CSI and / or channel quality indication CQI information; or,

[0277] A compensation factor used to assist the network device in determining PDCCH parameters.

[0278] In a possible implementation method, the second indication information is used to indicate at least one of the following:

[0279] A compensation factor for assisting the network device in determining a PDCCH parameter; or,

[0280] CSI and / or CQI information of at least two reception states determined by the terminal device; or,

[0281] When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

[0282] Optionally, the compensation factor described in the embodiment of the present application is mainly used to compensate for one or more factors such as AL, SNR, CQI or CSI, BLER, etc.

[0283] In a possible implementation method, the processing unit 900 is specifically configured to:

[0284] When the scheduling minimum time slot offset is not less than Y, the first receiving state is used to detect PDCCH; wherein Y is the time required for the terminal device to turn on and / or turn off the antenna.

[0285] In a possible implementation method, the processing unit 900 is further configured to:

[0286] The terminal device uses the maximum number of receiving antennas configured or supported by the terminal device to receive the signal state information reference signal CSI-RS, and calculates N CSIs and / or CQIs corresponding to N receiving states; the terminal device reports the N CSIs and / or CQIs to the network device; wherein the N receiving states include a first receiving state.

[0287] In a possible implementation method, the processing unit 900 is further configured to:

[0288] The terminal device receives the CSI-RS in a second receiving state, and calculates a first CSI and / or a first CQI corresponding to the first receiving state and a second CSI and / or a second CQI corresponding to the second receiving state;

[0289] The terminal device uses the first CSI and / or first CQI and the second CSI and / or second CQI as the CSI and / or CQI reported to the network device;

[0290] Among them, the number of first receiving antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of the second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

[0291] In a possible implementation method, the first indication information includes a compensation factor for assisting the network device in determining a PDCCH parameter.

[0292] In a possible implementation method, the processing unit 900 is specifically configured to:

[0293] If no information requesting scheduling data sent by the network device is received within the threshold time length, when the scheduling minimum time slot offset is greater than 0, the first receiving state is used to detect the PDCCH.

[0294] like Fig.10 As shown, the present application provides a network device, which includes a processor 1000 , a memory 1001 , and a communication interface 1002 .

[0295] The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1000 when performing operations. The communication interface 1002 is used to receive and send data under the control of the processor 1000 to perform data communication with the memory 1001.

[0296] The processor 1000 may be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and a NP. The processor 1000 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof. The memory 1001 may include various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0297] The processor 1000, the memory 1001 and the communication interface 1002 are interconnected. Optionally, the processor 1000, the memory 1001 and the communication interface 1002 can be interconnected via a bus 1003; the bus 1003 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.10 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0298] Specifically, the processor 1000 is used to read the program in the memory 1001 and execute:

[0299] Used to indicate the scheduling minimum time slot offset to the terminal device; receive second indication information sent by the terminal device; or, the network device sends first indication information to the terminal device; wherein the first indication information and / or the second indication information is used to determine the first receiving state of the physical downlink control channel PDCCH detected by the terminal device; when the scheduling minimum time slot offset is greater than 0 and PDCCH needs to be sent to the terminal device, send PDCCH suitable for reception in the first receiving state to the terminal device.

[0300] Furthermore, in addition to indicating minimum K0 to the terminal device, the network device also configures a time domain resource allocation list of PDSCH to the terminal device through Radio Resource Control (RRC) signaling.

[0301] The time domain resource allocation list includes a set of time slot offsets K0 between the PDCCH and the scheduled PDSCH and a set of starting symbols and lengths of the PDSCH in this time slot. The K0 value in the K0 set may be greater than or equal to 0, and multiple values ​​may be configured for the K0, such as the time slot offset K0 may be configured as {0, 1, 2, 3, 4, 5, 6}.

[0302] The minimum K0 indicated by the network device to the terminal device may be a value in the K0 set or other values. Minimum K0 reflects the smallest available K0 value in the K0 set. For example, if minimum K0=1, the available K0 values ​​in the K0 set are 1, 2, 3, 4, 5, and 6.

[0303] In the present application, the network device indicates the minimum K0 to the terminal device in any manner. For example, the network device may indicate the minimum K0 to the terminal device directly or indirectly through RRC, MAC CE, or DCI signaling. The terminal device may also obtain the minimum K0 directly or indirectly.

[0304] In one implementation, the first receiving state is a receiving state that can save power consumption of the terminal device. When the terminal device adopts different receiving states to receive the PDCCH, the power consumption of the terminal device is different.

[0305] Furthermore, when the terminal device described in the embodiment of the present application is not performing energy saving, the receiving state of the terminal device can be represented as a second receiving state.

[0306] In a possible implementation method, the first receiving state is used to indicate that the terminal device uses a first number of antennas to detect the PDCCH; wherein the first number of antennas is less than a maximum number of receiving antennas configured or supported by the terminal device.

[0307] In a possible implementation method, the first indication information includes at least one of the following:

[0308] When the network device needs to send a PDCCH to the terminal device, the network device compensates the sent PDCCH; or,

[0309] The terminal device reports at least two types of channel state information CSI and / or channel quality indication CQI information; or,

[0310] A compensation factor used to assist the network device in determining PDCCH parameters.

[0311] In a possible implementation method, the second indication information is used to indicate at least one of the following:

[0312] A compensation factor for assisting the network device in determining a PDCCH parameter; or,

[0313] CSI and / or CQI information of at least two reception states determined by the terminal device; or,

[0314] When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

[0315] In a possible implementation method, the processor 1000 is specifically configured to:

[0316] When the scheduling minimum time slot offset is not less than Y and PDCCH needs to be sent to the terminal device, PDCCH suitable for reception in the first receiving state is sent to the terminal device; wherein Y is the time required for the terminal device to turn on and / or turn off the antenna.

[0317] In a possible implementation method, the processor 1000 is further configured to:

[0318] The network device receives N CSIs and / or CQIs reported by the terminal device; wherein the N CSIs and / or CQIs are measured by the terminal device after receiving CSI-RS using the maximum number of configured or supported receiving antennas, and the N CSIs and / or CQIs include the CSI and / or CQI corresponding to the first receiving state.

[0319] In a possible implementation method, the processor 1000 is further configured to:

[0320] The network device receives the first CSI and / or the first CQI corresponding to the first number of antennas and the second CSI and / or the second CQI corresponding to the second number of antennas reported by the terminal device;

[0321] Among them, the first CSI and / or first CQI and the second CSI and / or second CQI are calculated after the terminal device adopts the second receiving state to receive the CSI-RS, and the number of first antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

[0322] In a possible implementation method, the first indication information includes a compensation factor for assisting the network device in determining a PDCCH parameter.

[0323] In a possible implementation method, the processor 1000 is further configured to:

[0324] Determine parameters of a PDCCH suitable for receiving in the first reception state.

[0325] Optionally, the compensation factor described in the embodiment of the present application is mainly used to compensate for one or more factors such as AL, SNR, CQI or CSI, BLER, etc.

[0326] In a possible implementation method, the processor 1000 determines the PDCCH applicable to the first reception state in the following manner:

[0327] Determining a parameter of the PDCCH applicable to the first reception state according to a predefined compensation factor; or,

[0328] Determining a parameter of the PDCCH applicable to the first receiving state according to the compensation factor sent by the terminal device; or,

[0329] Determine a parameter of the PDCCH applicable to the first receiving state according to the compensation factor configured by itself; or,

[0330] According to the information reported by the terminal device including the CSI and / or CQI corresponding to the first receiving state, the parameters of the PDCCH applicable to the first receiving state are determined.

[0331] In a possible implementation method, the processor 1000 is specifically configured to:

[0332] If no information requesting scheduling data is sent to the terminal device within a threshold duration, then when the scheduling minimum time slot offset is greater than 0, the PDCCH sent to the terminal device is compensated.

[0333] Optionally, the network device in the embodiment of the present application may define the same or different compensation factors for different terminal devices. The size of the compensation factor may be related to the location of the terminal device or the cell coverage, for example, a smaller compensation factor may be configured for a terminal device at the cell center or with good coverage, and a larger compensation factor may be configured for a terminal device at the cell edge or with poor coverage.

[0334] like Fig.11 As shown, the present invention provides a network device, characterized in that the network device includes: at least one processing unit 1100, at least one storage unit 1101 and at least one communication unit 1102, wherein the communication unit 1102 is used to receive and send data under the control of the processing unit 1100, and the storage unit 1101 stores a program code, and when the program code is executed by the processing unit 1100, the processing unit 1100 performs the following process:

[0335] Used to indicate the scheduling minimum time slot offset to the terminal device; receive second indication information sent by the terminal device; or, the network device sends first indication information to the terminal device; wherein the first indication information and / or the second indication information is used to determine the first receiving state of the physical downlink control channel PDCCH detected by the terminal device; when the scheduling minimum time slot offset is greater than 0 and PDCCH needs to be sent to the terminal device, send PDCCH suitable for reception in the first receiving state to the terminal device.

[0336] Furthermore, in addition to indicating minimum K0 to the terminal device, the network device also configures a time domain resource allocation list of PDSCH to the terminal device through Radio Resource Control (RRC) signaling.

[0337] The time domain resource allocation list includes a set of time slot offsets K0 between the PDCCH and the scheduled PDSCH and a set of starting symbols and lengths of the PDSCH in this time slot. The K0 value in the K0 set may be greater than or equal to 0, and multiple values ​​may be configured for the K0, such as the time slot offset K0 may be configured as {0, 1, 2, 3, 4, 5, 6}.

[0338] The minimum K0 indicated by the network device to the terminal device may be a value in the K0 set or other values. Minimum K0 reflects the smallest available K0 value in the K0 set. For example, if minimum K0=1, the available K0 values ​​in the K0 set are 1, 2, 3, 4, 5, and 6.

[0339] In the present application, the network device indicates the minimum K0 to the terminal device in any manner. For example, the network device may indicate the minimum K0 to the terminal device directly or indirectly through RRC, MAC CE, or DCI signaling. The terminal device may also obtain the minimum K0 directly or indirectly.

[0340] In one implementation, the first receiving state is a receiving state that can save power consumption of the terminal device. When the terminal device adopts different receiving states to receive the PDCCH, the power consumption of the terminal device is different.

[0341] Furthermore, when the terminal device described in the embodiment of the present application is not performing energy saving, the receiving state of the terminal device can be represented as a second receiving state.

[0342] In a possible implementation method, the first receiving state is used to indicate that the terminal device uses a first number of antennas to detect the PDCCH; wherein the first number of antennas is less than a maximum number of receiving antennas configured or supported by the terminal device.

[0343] In a possible implementation method, the first indication information includes at least one of the following:

[0344] When the network device needs to send a PDCCH to the terminal device, the network device compensates the sent PDCCH; or,

[0345] The terminal device reports at least two types of channel state information CSI and / or channel quality indication CQI information; or,

[0346] A compensation factor used to assist the network device in determining PDCCH parameters.

[0347] In a possible implementation method, the second indication information is used to indicate at least one of the following:

[0348] A compensation factor for assisting the network device in determining a PDCCH parameter; or,

[0349] CSI and / or CQI information of at least two reception states determined by the terminal device; or,

[0350] When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

[0351] In a possible implementation method, the processing unit 1100 is specifically configured to:

[0352] When the scheduling minimum time slot offset is not less than Y and PDCCH needs to be sent to the terminal device, PDCCH suitable for reception in the first receiving state is sent to the terminal device; wherein Y is the time required for the terminal device to turn on and / or turn off the antenna.

[0353] In a possible implementation method, the processing unit 1100 is further configured to:

[0354] The network device receives N CSIs and / or CQIs reported by the terminal device;

[0355] Among them, the N CSIs and / or CQIs are measured after the terminal device receives the CSI-RS using the maximum number of receiving antennas configured or supported, and the N CSIs and / or CQIs include the CSI and / or CQI corresponding to the first receiving state.

[0356] In a possible implementation method, the processing unit 1100 is further configured to:

[0357] The network device receives the first CSI and / or the first CQI corresponding to the first number of antennas and the second CSI and / or the second CQI corresponding to the second number of antennas reported by the terminal device;

[0358] The first CSI and / or first CQI and the second CSI and / or second CQI are calculated after the terminal device receives the CSI-RS in the second receiving state, and the number of first antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device. In a possible implementation method, the first indication information includes a compensation factor for assisting the network device in determining PDCCH parameters.

[0359] In a possible implementation method, the processing unit 1100 is further configured to:

[0360] Determine parameters of a PDCCH suitable for receiving in the first reception state.

[0361] In a possible implementation method, the processing unit 1100 is specifically configured to:

[0362] If no information requesting scheduling data is sent to the terminal device within a threshold duration, then when the scheduling minimum time slot offset is greater than 0, the PDCCH sent to the terminal device is compensated.

[0363] Optionally, the compensation factor described in the embodiment of the present application is mainly used to compensate for one or more factors such as AL, SNR, CQI or CSI, BLER, etc.

[0364] In a possible implementation method, the processing unit 1100 determines the parameters of the PDCCH applicable to the first reception state in the following manner:

[0365] Determining a parameter of the PDCCH applicable to the first reception state according to a predefined compensation factor; or,

[0366] Determining a parameter of the PDCCH applicable to the first receiving state according to the compensation factor sent by the terminal device; or,

[0367] Determine a parameter of the PDCCH applicable to the first receiving state according to the compensation factor configured by itself; or,

[0368] According to the information reported by the terminal device including the CSI and / or CQI corresponding to the first receiving state, the parameters of the PDCCH applicable to the first receiving state are determined.

[0369] Optionally, the network device in the embodiment of the present application may define the same or different compensation factors for different terminal devices. The size of the compensation factor may be related to the location of the terminal device or the cell coverage, for example, a smaller compensation factor may be configured for a terminal device at the cell center or with good coverage, and a larger compensation factor may be configured for a terminal device at the cell edge or with poor coverage.

[0370] In some possible implementations, various aspects of the communication transmission method provided by the embodiments of the present invention may also be implemented in the form of a program product, which includes a program code. When the program code is run on a computer device, the program code is used to enable the computer device to execute the steps of the communication transmission method according to various exemplary embodiments of the present invention described in this specification.

[0371] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0372] The program product for performing communication transmission according to an embodiment of the present invention may adopt a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on a server device. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with information transmission, an apparatus or a device.

[0373] The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, wherein the readable program code is carried. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. The readable signal medium may also be any readable medium other than a readable storage medium, which may transmit, propagate, or transfer a program for use by or in conjunction with a periodic network action system, apparatus, or device.

[0374] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0375] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device.

[0376] The embodiment of the present application also provides a computing device readable storage medium for the method of performing communication transmission on a terminal device, that is, the content is not lost after power failure. The storage medium stores a software program, including program code, and when the program code is run on a computing device, the software program can implement any of the above communication transmission schemes of the embodiment of the present application when it is read and executed by one or more processors.

[0377] The embodiment of the present application also provides a computing device readable storage medium for the method of performing communication transmission on a network device, i.e., the content is not lost after power failure. The storage medium stores a software program, including program code, and when the program code is run on a computing device, the software program can implement any of the above network device communication transmission solutions of the embodiment of the present application when read and executed by one or more processors.

[0378] The present application is described above with reference to the block diagrams and / or flow charts showing the methods, devices (systems) and / or computer program products according to the embodiments of the present application. It should be understood that a block of the block diagram and / or flow chart diagram and a combination of blocks of the block diagram and / or flow chart diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer and / or other programmable data processing device to produce a machine, so that the instructions executed by the computer processor and / or other programmable data processing device create a method for implementing the functions / actions specified in the block diagram and / or flow chart block.

[0379] Accordingly, the present application may also be implemented with hardware and / or software (including firmware, resident software, microcode, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium, which has a computer-usable or computer-readable program code implemented in the medium, for use by an instruction execution system or in conjunction with an instruction execution system. In the context of the present application, a computer-usable or computer-readable medium may be any medium that may contain, store, communicate, transmit, or convey a program for use by an instruction execution system, device, or apparatus, or in conjunction with an instruction execution system, device, or apparatus.

[0380] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, a person skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A communication transmission method, characterized in that: include: The terminal device receives the scheduling minimum time slot offset indicated by the network device; The terminal device receives first indication information sent by the network device; Alternatively, the terminal device sends second indication information to the network device; wherein the first indication information and / or the second indication information is used to determine a first receiving state of the terminal device detecting a physical downlink control channel PDCCH; When the scheduling minimum time slot offset is greater than 0, the terminal device detects the PDCCH in the first receiving state; Before the terminal device detects the PDCCH in the first receiving state, the method further includes: The terminal device determines, based on the first indication information received, that the PDCCH corresponding to the network device is applicable to the first receiving state of the terminal device; and / or the terminal device determines information of the first receiving state based on the first indication information received.

2. The method according to claim 1, characterized in that The information of the first receiving state includes: The number of first antennas used by the terminal device to detect the PDCCH; The number of the first antennas is less than the maximum number of receiving antennas configured or supported by the terminal device.

3. The method according to claim 2, characterized in that The first indication information includes at least one of the following: When the network device needs to send a PDCCH to the terminal device, compensating the sent PDCCH; or The terminal device reports channel state information CSI and / or channel quality indication CQI information of at least two receiving states; or A compensation factor used to assist the network device in determining PDCCH parameters.

4. The method according to claim 2, characterized in that The second indication information is used to indicate at least one of the following: A compensation factor for assisting the network device in determining a PDCCH parameter; or Information of CSI and / or CQI of at least two reception states determined by the terminal device; or When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

5. The method according to any one of claims 1 to 4, characterized in that: When the scheduling minimum time slot offset is greater than 0, the terminal device detects the PDCCH in the first receiving state, including: When the scheduling minimum time slot offset is not less than Y, the terminal device detects the PDCCH in the first receiving state; Wherein, Y is the time required for the terminal device to turn on and / or turn off the antenna.

6. The method according to claim 3 or 4, characterized in that Before the terminal device reports CSI and / or CQI information of at least two receiving states to the network device, the method further includes: The terminal device receives a signal state information reference signal CSI-RS using a maximum number of receiving antennas configured or supported by the terminal device, and calculates N CSIs and / or CQIs corresponding to N receiving states; The terminal device reports the N CSIs and / or CQIs to the network device; The N receiving states include a first receiving state.

7. The method according to claim 3 or 4, characterized in that Before the terminal device reports the CSI and / or CQI information of at least two receiving states, the method further includes: The terminal device receives the CSI-RS using the number of receiving antennas in the second receiving state, and calculates a first CSI and / or a first CQI corresponding to the first receiving state and a second CSI and / or a second CQI corresponding to the second receiving state; The terminal device reports the first CSI and / or first CQI and the second CSI and / or second CQI; Among them, the number of first receiving antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of the second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

8. A communication transmission method, characterized in that: include: The network device indicates the scheduling minimum time slot offset to the terminal device; The network device receives second indication information sent by the terminal device; or, the network device sends first indication information to the terminal device; wherein the first indication information and / or the second indication information is used to determine a first receiving state of the terminal device detecting a physical downlink control channel PDCCH; When the network device schedules a minimum time slot offset greater than 0 and needs to send a PDCCH to the terminal device, the network device sends a PDCCH suitable for reception in the first receiving state to the terminal device; The first indication information is also used by the terminal device to determine whether the PDCCH corresponding to the network device is applicable to the first receiving state of the terminal device; and / or, the first indication information is also used by the terminal device to determine information of the first receiving state.

9. The method according to claim 8, characterized in that The information of the first receiving state includes: The number of first antennas used by the terminal device to detect the PDCCH; The number of the first antennas is less than the maximum number of receiving antennas configured or supported by the terminal device.

10. The method according to claim 9, characterized in that The first indication information includes at least one of the following: When the network device needs to send a PDCCH to the terminal device, compensating the sent PDCCH; or The terminal device reports channel state information CSI and / or channel quality indication CQI information of at least two receiving states; or A compensation factor used to assist the network device in determining PDCCH parameters.

11. The method according to claim 10, characterized in that When the network device schedules a minimum time slot offset greater than 0 and needs to send a PDCCH to the terminal device, before sending a PDCCH suitable for reception in the first reception state to the terminal device, the network device further includes: The network device determines parameters suitable for receiving the PDCCH in the first reception state.

12. The method according to claim 11, characterized in that The network device determines the parameters of the PDCCH applicable to the first reception state in the following manner: The network device determines, according to a predefined compensation factor, a parameter of the PDCCH applicable to the first reception state; or The network device determines, according to the compensation factor sent by the terminal device, a parameter of the PDCCH applicable to the first receiving state; or The network device determines, according to the compensation factor configured by itself, the parameters of the PDCCH applicable to the first receiving state; or The network device determines parameters suitable for receiving PDCCH in the first receiving state based on the information reported by the terminal device including CSI and / or CQI corresponding to the first receiving state.

13. The method according to claim 9, characterized in that The second indication information is used to indicate at least one of the following: A compensation factor for assisting the network device in determining a PDCCH parameter; or Information of CSI and / or CQI of at least two reception states determined by the terminal device; or When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

14. The method according to any one of claims 8 to 13, characterized in that: When the network device schedules a minimum time slot offset greater than 0 and needs to send a PDCCH to the terminal device, the network device sends a PDCCH suitable for receiving in the first receiving state to the terminal device, including: When the network device schedules a minimum time slot offset of not less than Y and needs to send a PDCCH to the terminal device, the network device sends a PDCCH suitable for reception in the first receiving state to the terminal device; Wherein, Y is the time required for the terminal device to turn on and / or turn off the antenna.

15. The method according to any one of claims 10 to 13, characterized in that: The network device receives CSI and / or CQI information of at least two receiving states reported by the terminal device, including: The network device receives N CSIs and / or CQIs reported by the terminal device; Among them, the N CSIs and / or CQIs are measured after the terminal device receives CSI-RS using the maximum number of configured or supported receiving antennas, and the N CSIs and / or CQIs include the CSI and / or CQI corresponding to the first receiving state.

16. The method according to any one of claims 10 to 13, characterized in that: The network device receives CSI and / or CQI information of at least two receiving states reported by the terminal device, including: The network device receives the first CSI and / or the first CQI corresponding to the number of antennas in the first receiving state and the second CSI and / or the second CQI corresponding to the number of antennas in the second receiving state reported by the terminal device; Among them, the first CSI and / or first CQI and the second CSI and / or second CQI are calculated after the terminal device adopts the second receiving state to receive the CSI-RS, and the number of first antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

17. A terminal device, characterized in that: include: a processing unit and a communication unit; The communication unit is used to receive the scheduling minimum time slot offset indicated by the network device; Receiving first indication information sent by the network device; Alternatively, second indication information is sent to the network device; wherein the first indication information and / or the second indication information is used to determine a first receiving state of the terminal device detecting a physical downlink control channel PDCCH; The processing unit is configured to detect the PDCCH in a first receiving state when the scheduling minimum time slot offset is greater than 0; The processing unit is also used for: Determine, based on the first indication information received, that the PDCCH corresponding to the network device is applicable to the first receiving state of the terminal device; and / or determine, based on the first indication information received, information of the first receiving state.

18. The terminal device according to claim 17, characterized in that: The information of the first receiving state includes: The number of first antennas used by the terminal device to detect the PDCCH; The number of the first antennas is less than the maximum number of receiving antennas configured or supported by the terminal device.

19. The terminal device according to claim 18, characterized in that: The first indication information includes at least one of the following: When the network device needs to send a PDCCH to the terminal device, compensating the sent PDCCH; or The terminal device reports at least two types of channel state information CSI and / or channel quality indication CQI information; or A compensation factor used to assist the network device in determining PDCCH parameters.

20. The terminal device according to claim 18, characterized in that: The second indication information is used to indicate at least one of the following: A compensation factor for assisting the network device in determining a PDCCH parameter; or Information of CSI and / or CQI of at least two reception states determined by the terminal device; or When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

21. The terminal device according to any one of claims 17 to 20, characterized in that: The processing unit is specifically used for: When the scheduling minimum time slot offset is not less than Y, using the first receiving state to detect the PDCCH; Wherein, Y is the time required for the terminal device to turn on and / or turn off the antenna.

22. The terminal device according to claim 19 or 20, characterized in that: The processing unit is further used for: The terminal device receives a signal state information reference signal CSI-RS using a maximum number of receiving antennas configured or supported by the terminal device, and calculates N CSIs and / or CQIs corresponding to N receiving states; The terminal device reports the N CSIs and / or CQIs to the network device; The N receiving states include a first receiving state.

23. The terminal device according to claim 19 or 20, characterized in that: The processing unit is further used for: The terminal device receives the CSI-RS in a second receiving state, and calculates a first CSI and / or a first CQI corresponding to the first receiving state and a second CSI and / or a second CQI corresponding to the second receiving state; The terminal device uses the first CSI and / or first CQI and the second CSI and / or second CQI as the CSI and / or CQI reported to the network device; Among them, the number of first receiving antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of the second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

24. A network device, characterized in that: include: a processing unit and a communication unit; The communication unit is used to indicate the scheduling minimum time slot offset to the terminal device; Receiving second indication information sent by the terminal device; or, the network device sends first indication information to the terminal device; wherein the first indication information and / or the second indication information is used to determine a first receiving state of the terminal device detecting a physical downlink control channel PDCCH; The processing unit is configured to send a PDCCH suitable for reception in the first receiving state to the terminal device when the scheduling minimum time slot offset is greater than 0 and the PDCCH needs to be sent to the terminal device; The first indication information is also used by the terminal device to determine whether the PDCCH corresponding to the network device is applicable to the first receiving state of the terminal device; and / or, the first indication information is also used by the terminal device to determine information of the first receiving state.

25. The network device according to claim 24, characterized in that The information of the first receiving state includes: The number of first antennas used by the terminal device to detect the PDCCH; The number of the first antennas is less than the maximum number of receiving antennas configured or supported by the terminal device.

26. The network device according to claim 25, characterized in that The first indication information includes at least one of the following: When the network device needs to send a PDCCH to the terminal device, compensating the sent PDCCH; or The terminal device reports at least two types of channel state information CSI and / or channel quality indication CQI information; or A compensation factor used to assist the network device in determining PDCCH parameters.

27. The network device according to claim 26, characterized in that The processing unit is also used for: Determine parameters of a PDCCH suitable for receiving in the first reception state.

28. The network device according to claim 27, characterized in that The processing unit determines the parameters of the PDCCH applicable to the first reception state in the following manner: Determining a parameter of the PDCCH applicable to the first reception state according to a predefined compensation factor; or Determining a parameter of the PDCCH applicable to the first receiving state according to the compensation factor sent by the terminal device; or Determine, according to the compensation factor configured by itself, a parameter of the PDCCH applicable to the first receiving state; or According to the information reported by the terminal device including the CSI and / or CQI corresponding to the first receiving state, the parameters of the PDCCH applicable to the first receiving state are determined.

29. The network device according to claim 25, characterized in that The second indication information is used to indicate at least one of the following: A compensation factor for assisting the network device in determining a PDCCH parameter; or Information of CSI and / or CQI of at least two reception states determined by the terminal device; or When sending the PDCCH to the terminal device, the network device compensates the PDCCH.

30. The network device according to any one of claims 24 to 29, characterized in that: The processing unit is specifically used for: When the scheduling minimum time slot offset is not less than Y and the PDCCH needs to be sent to the terminal device, sending the PDCCH suitable for reception in the first receiving state to the terminal device; Wherein, Y is the time required for the terminal device to turn on and / or turn off the antenna.

31. The network device according to any one of claims 26 to 29, characterized in that: The processing unit is further used for: The network device receives N CSIs and / or CQIs reported by the terminal device; Among them, the N CSIs and / or CQIs are measured after the terminal device receives the CSI-RS using the maximum number of receiving antennas configured or supported, and the N CSIs and / or CQIs include the CSI and / or CQI corresponding to the first receiving state.

32. The network device according to any one of claims 26 to 29, characterized in that: The processing unit is further used for: The network device receives the first CSI and / or the first CQI corresponding to the first number of antennas and the second CSI and / or the second CQI corresponding to the second number of antennas reported by the terminal device; Among them, the first CSI and / or first CQI and the second CSI and / or second CQI are calculated after the terminal device adopts the second receiving state to receive the CSI-RS, and the number of first antennas corresponding to the first receiving state is less than the number of second antennas corresponding to the second receiving state, and the number of second antennas is not greater than the maximum number of receiving antennas configured or supported by the terminal device.

33. A terminal device, characterized in that: include: processors, transceivers, and memory; The memory is used to store program instructions; The processor is configured to execute the method according to any one of claims 1 to 7 through the transceiver by calling the program instructions stored in the memory.

34. A network device, characterized in that: include: Processor, communication interface and memory; The memory is used to store program instructions; The processor is configured to execute the method according to any one of claims 8 to 16 through the communication interface by calling the program instructions stored in the memory.

35. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to make a computer execute the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 16.

36. A computer program product, characterized in that The method comprises computer executable instructions for causing a computer to execute the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 16.

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