Communication method and device

Abstract

The invention provides a communication method and a communication device, which are used for improving the transmission performance of uplink signals in a scene of deploying UL-only TRP at the edge of a cell. The method comprises the following steps: sending a reference signal through N beams; and obtaining first information, and sending an uplink signal according to the first information. The first information is used for indicating at least one of the following items: a beam parameter related to the first network device, a path loss parameter related to the first network device, a beam parameter related to the second network device, or a path loss parameter related to the second network device, and the second network device supports receiving of an uplink signal and does not support sending of a downlink signal. By sending the reference signal for beam measurement, the UL-only TRP can measure to obtain the optimal beam direction and path loss of the terminal equipment pointing to the UL-only TRP, so that the beam direction of the terminal equipment can be aligned with the UL-only TRP when the terminal equipment subsequently sends an uplink signal, and the coverage performance of the uplink signal is improved.

Description

Technical Field

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

[0002] The fifth generation communication system, namely the new radio (NR) system, can support the use of a larger bandwidth to transmit signals at higher frequencies, and the signal energy attenuation is relatively large when the frequency is increased. Due to the limited transmit power of the terminal device, the coverage performance of the uplink physical random access channel (PRACH) at higher frequencies is poor. When the signal frequency increases, the antenna array spacing of the terminal device can also become smaller, so the terminal side can use more transmitting antennas to transmit signals, which can form a narrow beam with strong directivity and improve the coverage capability of the uplink PRACH. It is also possible to deploy a transmission reception point (TRP) (i.e., UL-only TRP) for uplink signal reception only at the edge of the cell to reduce the energy attenuation from the terminal device to the network device and increase the uplink signal energy received by the network device, which is equivalent to improving the coverage capability of PRACH.

[0003] In the scenario where the UL-only TRP is deployed, since the network device and the UL-only TRP are deployed at different locations and the beam generally indicates the network device, the performance of uplink transmission of the terminal device to the UL-only TRP is poor. Summary of the invention

[0004] The present application provides a communication method and device for improving the transmission performance of uplink signals in a scenario where UL-only TRP is deployed at the edge of a cell.

[0005] In a first aspect, a communication method is provided, the execution subject of the method may be a terminal device or a chip, a chip system or a circuit located in the terminal device, and the method may be implemented by the following steps: sending a reference signal through N beams, where N is an integer greater than 0; obtaining first information, and sending an uplink signal according to the first information. The first information is used to indicate at least one of the following: a beam parameter related to the first network device, a path loss parameter related to the first network device, a beam parameter related to the second network device, or a path loss parameter related to the second network device, and the second network device supports receiving uplink signals but does not support sending downlink signals.

[0006] In this application, by sending a reference signal for beam measurement, the UL-only TRP measurement can obtain the optimal beam direction of the terminal device pointing to the UL-only TRP, which is beneficial for the terminal device to align the beam direction with the UL-only TRP when sending uplink signals in the future, thereby improving the coverage performance of the uplink signal. In addition, by providing a reference signal for path loss measurement for the UL-only TRP in the initial access phase, the path loss from the terminal device to the UL-only TRP can be measured more accurately, thereby improving the coverage performance of the uplink signal.

[0007] In one possible design, the method further includes: sending M random access signals, the time domain resources occupied by the reference signal and the time domain resources occupied by the random access signal are associated with each other, and M is an integer greater than 0. The above method enables the network device to associate the reference signal with the terminal device by associating the reference signal with the time domain resources of the random access signal.

[0008] In one possible design, the time domain resources occupied by the k-th transmission of the reference signal are the time domain resources that are P symbols apart from the time domain resources occupied by the k*m-th transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0.

[0009] In one possible design, the time domain resources occupied by the reference signal are the time domain resources that are Q symbols apart from the time domain resources occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

[0010] In one possible design, the method further includes: receiving second information, where the second information is used to indicate the time domain resources occupied by the reference signal and / or the frequency domain resources occupied by the reference signal. In the above manner, the terminal device can send the reference signal on the indicated resources, thereby improving the accuracy of the beam measurement.

[0011] In one possible design, sending an uplink signal according to the first information includes: determining the transmission power of the uplink signal according to the path loss parameter indicated by the first information; and sending the uplink signal at the transmission power.

[0012] In one possible design, if the terminal device is connected to the first network device, the transmission power of the uplink signal can be determined according to the path loss parameters related to the first network device. In this way, the transmission power of the terminal device can be adapted to the first network device, thereby improving the coverage performance of the uplink signal.

[0013] In one possible design, if the terminal device is connected to the second network device, the transmission power of the uplink signal can be determined according to the path loss parameters related to the second network device. In this way, the transmission power of the terminal device can be adapted to the second network device, thereby improving the coverage performance of the uplink signal.

[0014] In one possible design, sending an uplink signal according to the first information includes: determining a beam for sending the uplink signal according to beam parameters indicated by the first information; and sending the uplink signal through the beam.

[0015] In one possible design, if the terminal device is connected to the first network device, the beam for sending the uplink signal can be determined according to the beam parameters related to the first network device. In this way, the beam direction of the terminal device when sending the uplink signal can be aligned with the first network device, thereby improving the coverage performance of the uplink signal.

[0016] In one possible design, if the terminal device is connected to the second network device, the beam for sending the uplink signal can be determined according to the beam parameters related to the second network device. In this way, the beam direction of the terminal device when sending the uplink signal can be aligned with the second network device, thereby improving the coverage performance of the uplink signal.

[0017] In one possible design, the method further includes: receiving third information, where the third information is used to indicate the transmission power of the reference signal. This method is beneficial for the first network device and the second network device to measure the path loss.

[0018] In one possible design, sending the reference signal through N beams includes: sending the reference signal through K ports respectively, wherein the K ports correspond to the N beams, and K is an integer not less than N. In this way, the reference signal can be sent through N beams, which is beneficial for the first network device and the second network device to perform beam measurement.

[0019] In a second aspect, a communication method is provided, the execution subject of the method may be a network device or a chip, a chip system or a circuit located in the network device, the network device supports receiving uplink signals and supports sending downlink signals. The method can be implemented by the following steps: sending second information, the second information is used to indicate the time domain resources occupied by the reference signal and / or the frequency domain resources occupied by the reference signal; receiving fourth information, the fourth information is used to indicate the beam parameters and / or path loss parameters related to the second network device, the second network device supports receiving uplink signals but does not support sending downlink signals; sending first information, the first information includes at least one of the following: fourth information, beam parameters related to the first network device, or path loss parameters related to the first network device.

[0020] In this application, by sending a reference signal for beam measurement, the UL-only TRP measurement can obtain the optimal beam direction of the terminal device pointing to the UL-only TRP, which is beneficial for the terminal device to align the beam direction with the UL-only TRP when sending uplink signals in the future, thereby improving the coverage performance of the uplink signal. In addition, by providing a reference signal for path loss measurement for the UL-only TRP in the initial access phase, the path loss from the terminal device to the UL-only TRP can be measured more accurately, thereby improving the coverage performance of the uplink signal.

[0021] In one possible design, the method further includes: receiving M random access signals, the time domain resources occupied by the reference signal and the time domain resources occupied by the random access signal are associated with each other, and M is an integer greater than 0. The above method enables the network device to associate the reference signal with the terminal device by associating the reference signal with the time domain resources of the random access signal.

[0022] In one possible design, the time domain resources occupied by the k-th transmission of the reference signal are the time domain resources that are P symbols apart from the time domain resources occupied by the k*m-th transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0.

[0023] In one possible design, the time domain resources occupied by the reference signal are the time domain resources that are Q symbols apart from the time domain resources occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

[0024] In one possible design, the method also includes: receiving a reference signal on a resource indicated by the second information; and determining beam parameters and / or path loss parameters related to the first network device based on the reference signal.

[0025] In one possible design, the method further includes: sending third information, where the third information is used to indicate the transmission power of the reference signal. This method is beneficial for the first network device and the second network device to measure the path loss.

[0026] In a third aspect, a communication method is provided, the execution subject of the method may be a network device or a chip, chip system or circuit located in the network device, the network device supports receiving uplink signals but does not support sending downlink signals. The method may be implemented by the following steps: receiving second information, the second information is used to indicate the time domain resources occupied by the reference signal and / or the frequency domain resources occupied by the reference signal; receiving the reference signal on the resources indicated by the second information; determining the beam parameters and / or path loss parameters related to the second network device according to the reference signal, the second network device supports receiving uplink signals but does not support sending downlink signals; sending fourth information, the fourth information is used to indicate the beam parameters and / or path loss parameters related to the second network device.

[0027] In this application, by sending a reference signal for beam measurement, the UL-only TRP measurement can obtain the optimal beam direction of the terminal device pointing to the UL-only TRP, which is beneficial for the terminal device to align the beam direction with the UL-only TRP when sending uplink signals in the future, thereby improving the coverage performance of the uplink signal. In addition, by providing a reference signal for path loss measurement for the UL-only TRP in the initial access phase, the path loss from the terminal device to the UL-only TRP can be measured more accurately, thereby improving the coverage performance of the uplink signal.

[0028] In one possible design, the time domain resources occupied by the reference signal and the time domain resources occupied by the M random access signals sent by the terminal device to the first network device are associated with each other, and M is an integer greater than 0. The above method associates the reference signal with the time domain resources of the random access signal, so that the network device can associate the reference signal with the terminal device.

[0029] In one possible design, the time domain resources occupied by the k-th transmission of the reference signal are the time domain resources that are P symbols apart from the time domain resources occupied by the k*m-th transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0.

[0030] In one possible design, the time domain resources occupied by the reference signal are the time domain resources that are Q symbols apart from the time domain resources occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

[0031] In one possible design, the method further includes: receiving third information, where the third information is used to indicate the transmission power of the reference signal. This method is beneficial for the first network device and the second network device to measure the path loss.

[0032] In a fourth aspect, the present application further provides a communication device, which is a terminal device or a chip in a terminal device. The communication device has the function of implementing any method provided in the first aspect above. The communication device can be implemented by hardware, or by hardware executing corresponding software implementation. The hardware or software includes one or more units or modules corresponding to the above functions.

[0033] In one possible design, the communication device includes: a processor, which is configured to support the communication device to perform the corresponding functions of the terminal device in the method shown above. The communication device may also include a memory, which can be coupled to the processor and stores the necessary program instructions and data of the communication device. Optionally, the communication device also includes an interface circuit, which is used to support communication between the communication device and a network device or other device, such as the transmission and reception of data or signals. Exemplarily, the communication interface can be a transceiver, circuit, bus, module or other type of communication interface.

[0034] In one possible design, the communication device includes corresponding functional modules, which are respectively used to implement the steps in the above method. The functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0035] In one possible design, the structure of the communication device includes a processing unit (or processing unit) and a communication unit (or communication unit), which can perform the corresponding functions in the above method example. For details, please refer to the description of the method provided in the first aspect, which will not be repeated here.

[0036] In a fifth aspect, the present application further provides a communication device, which is a network device or a chip in a network device. The communication device has the function of implementing any method provided in the second aspect or the third aspect above. The communication device can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0037] In one possible design, the communication device includes: a processor, which is configured to support the communication device to perform the corresponding functions of the network device in the method shown above. The communication device may also include a memory, which can be coupled to the processor and stores the necessary program instructions and data of the communication device. Optionally, the communication device also includes an interface circuit, which is used to support communication between the communication device and a terminal device or other device, such as the transmission and reception of data or signals. Exemplarily, the communication interface can be a transceiver, circuit, bus, module or other type of communication interface.

[0038] In one possible design, the communication device includes corresponding functional modules, which are respectively used to implement the steps in the above method. The functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0039] In one possible design, the structure of the communication device includes a processing unit (or processing unit) and a communication unit (or communication unit), which can perform the corresponding functions in the above method examples. For details, please refer to the description of the method provided in the second aspect or the third aspect, which will not be repeated here.

[0040] In a sixth aspect, a communication device is provided, comprising a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or to send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method in the aforementioned first aspect and any possible design through logic circuits or execution code instructions.

[0041] In the seventh aspect, a communication device is provided, comprising a processor and an interface circuit, the interface circuit being used to receive signals from other communication devices outside the communication device and transmit them to the processor or to send signals from the processor to other communication devices outside the communication device, the processor being used to implement the aforementioned second aspect or the second aspect and the method in any possible design through logic circuits or execution code instructions.

[0042] In an eighth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer program or instruction is executed by a processor, the method of the aforementioned first aspect, second aspect, or third aspect and any possible design is implemented.

[0043] In the ninth aspect, a computer program product storing instructions is provided, which, when executed by a processor, implements the method in the aforementioned first aspect, second aspect, or third aspect and any possible design.

[0044] In a tenth aspect, a chip system is provided, the chip system includes a processor and may also include a memory, for implementing the method in the first aspect, the second aspect, or the third aspect and any possible design. The chip system may be composed of a chip, or may include a chip and other discrete devices.

[0045] In the eleventh aspect, a communication system is provided, which includes the device described in the first aspect (such as a terminal device), the device described in the second aspect (such as a first network device), and the device described in the third aspect (such as a second network device).

[0046] The technical effects that can be achieved by the technical solutions of any of the fourth to eleventh aspects mentioned above can be described with reference to the technical effects that can be achieved by the technical solutions of the first aspect mentioned above, and the repeated parts will not be repeated. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1A schematic diagram of a PRACH sending method according to an embodiment of the present application;

[0048] Figure 2 A schematic diagram of a PRACH sending method according to an embodiment of the present application;

[0049] Figure 3 A schematic diagram of the architecture of a communication system according to an embodiment of the present application;

[0050] Figure 4 A flow chart of a communication method according to an embodiment of the present application;

[0051] Figure 5 A schematic diagram of reference signal transmission according to an embodiment of the present application;

[0052] Figure 6 A schematic diagram of a reference signal pattern design according to an embodiment of the present application;

[0053] Figure 7 A schematic diagram of a reference signal pattern design according to an embodiment of the present application;

[0054] Figure 8 A schematic diagram of a reference signal pattern design according to an embodiment of the present application;

[0055] Fig. 9 A schematic diagram of an association relationship between a time domain resource of a reference signal and a time domain resource of a PRACH signal according to an embodiment of the present application;

[0056] Fig.10 A schematic diagram of an association relationship between a time domain resource of a reference signal and a time domain resource of a PRACH signal according to an embodiment of the present application;

[0057] Fig.11 A schematic diagram of an association relationship between a time domain resource of a reference signal and a time domain resource of a PRACH signal according to an embodiment of the present application;

[0058] Fig.12 A schematic diagram of the structure of a communication device according to an embodiment of the present application;

[0059] Fig.13 A schematic diagram of the structure of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0061] Below, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0062] 1) Uplink-only transmission reception point (UL-only TRP): A network device that can receive uplink signals sent by terminal devices but cannot send downlink signals to terminal devices.

[0063] 2) Macro site TRP: Compared with UL-only TRP, macro site TRP can receive uplink signals sent by terminal devices and can also send downlink signals to terminal devices.

[0064] 3) Precoding: The multiple-in multiple-out (MIMO) signal model is y=Hx+n, where H is a matrix, x is a transmitted signal, y is a received signal, n is noise, and x, y, and n are all vectors. If a matrix or vector W is multiplied by x before sending x, the signal model becomes y=HWx+n, and this process is called precoding. Precoding can be divided into digital precoding, analog precoding, or mixed digital and analog precoding. The precoding in the embodiments of the present application can be one or more of the above forms.

[0065] 4) Beam measurement: Using the reference signal, the channel matrix H can be estimated, and then the channel matrix is ​​decomposed by singular value decomposition (SVD) to obtain H = UDV, * represents the conjugate transposed symbol. If the reference signal is precoded, and the precoding vector is a vector vk in V, then the estimated channel vector is H' = uk dk. At this time, the norm of H' (representing the concept of energy) can be calculated, which is proportional to dk. At this time, different precoding vectors vk can be regarded as different transmission beam directions, and dk represents the energy corresponding to different beams. The beam measurement process is to find the largest dk value and the precoding vector vk corresponding to the dk value through measurement.

[0066] 5) Beam direction: This is the precoding vector vk mentioned above. Since vk is generally a unit vector, it can be regarded as a direction in a high-dimensional space, that is, the beam direction.

[0067] 6) Path loss: refers to the energy attenuation of electromagnetic waves propagating in space, which is generally inversely proportional to the square or fourth power of the distance.

[0068] 7) Power control: To ensure that the energy of signals sent by terminal devices at different distances from the network equipment is basically the same when reaching the network equipment, the network equipment needs to send signaling to the terminal to adjust the power of different terminal devices. This process is called power control.

[0069] 8) Reference signal (RS) port (antenna port): refers to mutually orthogonal reference signals used to measure channels in different beam directions. For example, if RS1 and RS2 belong to antenna port 1 and antenna port 2 respectively, RS1 is used to measure the channel in beam direction 1, and RS2 is used to measure the channel in beam direction 2.

[0070] 9) Terminal equipment, which can be a device with wireless transceiver function or a chip that can be set in any device, can also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication equipment, user agent or user device. The terminal equipment in the embodiment of the present application can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, an XR device (such as VR device, AR device, MR device, etc.), a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in video surveillance, and a wearable terminal device. The terminal equipment can also be an eMBB UE, a URLLC UE, a drone, other Internet of things (IoT) devices, a positioning device, etc.

[0071] The network device may be a device for realizing the functions of the access network device. The access network device may refer to a device in the access network that communicates with the wireless terminal device through one or more cells at the air interface, for example, it may be a next generation base station (next Generation node B, gNB) in the NR system, or an evolutionary base station (evolutional node B, eNB) in the long term evolution (long term evolution, LTE) system. The network device may also be a device that can support the network device to realize the functions of the access network device, such as a chip system, which may be installed in the network device.

[0072] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to 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 previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0073] Furthermore, unless otherwise specified, the 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 size, content, order, timing, priority or importance of the multiple objects. For example, the first network device and the second network device are only used to distinguish different network devices, and do not indicate the difference in capabilities, priorities or importance of the two network devices.

[0074] It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0075] The terms "including" and "having" and any variations thereof mentioned in the following description of the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0076] The foregoing introduces some terminology concepts involved in the embodiments of the present application. The following introduces the technical features involved in the embodiments of the present application.

[0077] The fifth-generation communication system, namely the NR system, can support the use of a larger bandwidth to transmit signals at higher frequencies, and the signal energy attenuation is relatively large when the frequency is increased. Due to the limited transmit power of the terminal device, the coverage performance of the uplink PRACH at higher frequencies is poor. When the signal frequency increases, the antenna array spacing of the terminal device can also become smaller, so the terminal side can use more transmit antennas (such as 16Tx, 32Tx... etc.) to transmit signals, which can form a narrow beam with strong directivity and improve the coverage capability of the uplink PRACH. In addition, UL-only TRP can also be deployed at the edge of the cell to reduce the energy attenuation from the terminal device to the network device and increase the uplink signal energy received by the network device, which is equivalent to improving the coverage capability of PRACH.

[0078] At present, in order to improve the coverage capability of PRACH, there are two ways to send PRACH:

[0079] The first method is to repeatedly send the PRACH signal in the time domain, and each time the time domain is repeated, a fixed beam direction is used to transmit the signal, such as Figure 1 shown.

[0080] The second method is to repeatedly send the PRACH signal in the time domain, and each time the time domain is repeated, a different beam direction is used to transmit the signal, such as Figure 2 shown.

[0081] When UL-only TRP is deployed at the edge of the cell, the above two methods do not bring better uplink gain. Specifically, for the first method, since the beam direction of PRACH only points to a fixed direction, the beam direction pointed by PRACH is the optimal direction relative to the macro station TRP of the current cell. When there is a UL-only TRP, the current beam direction is not aligned with the UL-only TRP, resulting in no benefit from the UL-only TRP and poor coverage performance. For the second method, since the number of time domain symbols corresponding to a certain fixed beam direction is small, the energy gain of symbol time domain repetition is low, the coverage improvement efficiency is low, and the beam scanning time is extended. In summary, the beam direction of the terminal device when sending the uplink signal is not aligned with the UL-only TRP, or the delay required to align with the UL-only TRP is too long, resulting in poor transmission performance of the uplink signal.

[0082] Based on this, the embodiments of the present application provide a communication method and device for improving the transmission performance of uplink signals in the scenario where UL-only TRP is deployed at the cell edge. The method and the device are based on the same inventive concept. Since the principles of solving the problem by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0083] The communication method provided in this application can be applied to various communication systems, for example, it can be the Internet of Things (IoT), narrowband Internet of Things (NB-IoT), long term evolution (LTE), it can also be a fifth generation (5G) communication system, it can also be a hybrid architecture of LTE and 5G, it can also be a 5G new radio (NR) system, and 6G or new communication systems that will appear in the future communication development. The 5G communication system described in this application may include at least one of a non-standalone (NSA) 5G communication system and a standalone (SA) 5G communication system. The communication system can also be a machine to machine (M2M) network or other network.

[0084] The network device and the terminal device can communicate through the licensed spectrum, or through the unlicensed spectrum, or through both the licensed spectrum and the unlicensed spectrum. The network device and the terminal device can communicate through the spectrum below 6G, or through the spectrum above 6G, or through both the spectrum below 6G and the spectrum above 6G. The embodiment of the present application does not limit the spectrum resources used between the network device and the terminal device.

[0085] See also Figure 3 As shown, a communication system provided by an embodiment of the present application includes a first network device, a second network device and a terminal device, wherein the first network device can receive uplink signals and can also send downlink signals, and the second network device can receive uplink signals but does not support sending downlink signals. In the communication system, the terminal device can send uplink signals to the first network device, and can also send uplink signals through the second network device. The first network device can send downlink signals to the terminal device. Figure 3 This is only a schematic diagram and does not specifically limit the type of communication system, the number of devices included in the communication system, etc.

[0086] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0087] The following will describe the technical solution in the embodiment of the present application in conjunction with the accompanying drawings in the embodiment of the present application. Figure 3 The communication system shown is taken as an example.

[0088] See also Figure 4 , is a flow chart of a communication method provided by the present application. The method comprises:

[0089] S401, the terminal device sends a reference signal via N beams.

[0090] Wherein, N is an integer greater than 0.

[0091] In a possible implementation, the terminal device may send reference signals through N ports respectively, where the N ports correspond to the N beams, such as Figure 5 shown.

[0092] In one example, the terminal device may precode the reference signal so as to form signals on N beams, wherein the precoding weights of different ports may be different so that each port corresponds to a beam.

[0093] In another example, the terminal device may send reference signals through K ports respectively, and K may be not less than N. In this example, multiple ports may correspond to the same beam direction. For example, K=3, N=2, then both port 1 and port 2 are used to send signals through beam 1, and port 3 is used to send signals using beam 2.

[0094] Through the above examples, the signal strength in a certain beam direction can be enhanced according to actual needs, thereby improving communication performance.

[0095] Three methods of designing the port and pattern of the reference signal are described below.

[0096] Method 1:

[0097] The reference signal occupies one orthogonal frequency-division multiplexing (OFDM) symbol in the time domain and more than one resource element (RE) in the frequency domain. The number of REs is proportional to the number of beams. Different ports are orthogonalized by using different frequency-domain orthogonal complementary codes (OCC) for code division orthogonality, such as Figure 6 shown.

[0098] Method 2:

[0099] The reference signal occupies 1 RE in the frequency domain and more than 1 OFDM symbol in the time domain. The number of OFDM symbols occupied is proportional to the number of beams. Different ports are orthogonalized by using different time domain OCC codes, such as Figure 7 shown.

[0100] Method 3:

[0101] The reference signal occupies more than one OFDM symbol in the time domain and more than one RE in the frequency domain. The total number of REs occupied is proportional to the number of beams. Different ports are orthogonalized by using different time domain OCC codes and frequency domain OCC codes, such as Figure 8 shown.

[0102] In a possible implementation manner, the terminal device may send M random access signals before sending the reference signal, where M is an integer greater than 0. In this implementation manner, the time domain resources occupied by the reference signal and the time domain resources occupied by the random access signal may be associated with each other. The random access signal may be Msg1 or other signals, which are not specifically limited here.

[0103] Exemplarily, the association relationship can be: the time domain resources occupied by the kth transmission of the reference signal are the time domain resources that are P symbols apart from the time domain resources occupied by the k*mth transmission of the random access signal, k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0.

[0104] Taking m=1 as an example, the time domain resource occupied by the kth transmission of the reference signal is the time domain resource that is P symbols after the time domain resource occupied by the kth transmission of the random access signal, that is, after each random access signal is sent, a reference signal is sent after an interval of P symbols. Taking P=2 as an example, Fig. 9 shown.

[0105] Taking m greater than 1 as an example, the time domain resource occupied by the kth transmission of the reference signal is the time domain resource occupied by the k*mth transmission of the random access signal with an interval of P symbols, that is, after every m random access signals are sent, a reference signal is sent after an interval of P symbols. Taking m=2, P=2 as an example, Fig.10 shown.

[0106] Alternatively, the association relationship may also be: the time domain resource occupied by the reference signal is the time domain resource that is Q symbols after the time domain resource occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0. That is, after sending the Mth random access signal, the reference signal is sent at an interval of Q symbols. Taking M=4 and Q=4 as an example, Fig.11 shown.

[0107] Optionally, the time domain resources and / or frequency domain resources occupied by the reference signal may be defined by a protocol or indicated by the first network device to the terminal device. For example, the first network device sends second information to the terminal device, wherein the second information is used to indicate the time domain resources and / or frequency domain resources occupied by the reference signal.

[0108] In addition, the first network device may also send second information to the second network device, so that the second network device may receive the reference signal on the resource indicated by the second information.

[0109] Taking the above implementation as an example, the second information may indicate the association relationship between the time domain resources occupied by the reference signal and the time domain resources occupied by the random access signal.

[0110] S402: The first network device sends first information to the terminal device. Correspondingly, the terminal device receives the first information from the first network device.

[0111] Among them, the first information is used to indicate at least one of the following: beam parameters related to the first network device, path loss parameters related to the first network device, beam parameters related to the second network device, or path loss parameters related to the second network device, and the second network device supports receiving uplink signals but does not support sending downlink signals.

[0112] The beam parameters and / or path loss parameters related to the first network device may be obtained by the first network device measuring the reference signal. Alternatively, the beam parameters and / or path loss parameters related to the first network device may be obtained by the first network device measuring the random access signal. The beam parameters and / or path loss parameters related to the second network device may be obtained by the second network device measuring the reference signal.

[0113] The following first introduces the beam parameters.

[0114] The beam parameter related to the first network device may indicate the optimal beam of the first network device. Specifically, the beam parameter related to the first network device may be the direction or identifier (such as beam ID) of the optimal beam of the first network device, etc. Among them, the optimal beam of the first network device may be determined as follows: the first network device measures the reference signals of the above-mentioned N ports, and regards the beam corresponding to the signal with the largest reference signal receiving power (RSRP) as the optimal beam. Alternatively, the first network device may measure M random access signals, and regard the beam corresponding to the random access signal with the largest RSRP as the optimal beam.

[0115] The beam parameter related to the second network device may indicate the optimal beam of the second network device. Specifically, the beam parameter related to the second network device may be the direction or identifier (such as beam ID) of the optimal beam of the second network device, etc. The optimal beam of the second network device may be determined in the following manner: the second network device may measure the reference signals of the N ports, and regard the beam corresponding to the signal with the largest RSRP as the optimal beam.

[0116] The above introduces the beam parameters. The following introduces the path loss parameters.

[0117] In a possible implementation manner, the path loss parameter related to the first network device may be the path loss between the terminal device and the first network device. The path loss parameter related to the second network device may be the path loss between the terminal device and the second network device.

[0118] For example, assuming that the transmission power of the reference signal is P0, and the receiving power of the first network device when receiving the reference signal is P1, then the path loss from the terminal device to the first network device can be calculated to be PL1=P1-P0; the receiving power of the second network device when receiving the reference signal is P2, then the path loss from the terminal device to the second network device can be calculated to be PL2=P2-P0, where the units of P0, P1, P2, PL1, and PL2 can be dB.

[0119] In this implementation, the transmit power of the reference signal may be indicated by the first network device. For example, the first network device may send third information to the terminal device, where the third information is used to indicate the transmit power of the reference signal. Optionally, the first network device may also send the third information to the second network device.

[0120] In another possible implementation, the path loss parameter associated with the first network device and / or the path loss parameter associated with the second network device may be a path loss difference between the first network device and the second network device. Optionally, in this manner, the first message may indicate one of the path loss parameter associated with the first network device and the path loss parameter associated with the second network device.

[0121] For example, assuming that the receiving power of the first network device when receiving the reference signal is P1, and the receiving power of the second network device when receiving the reference signal is P2, the first network device can determine the path loss difference Δ between the first network device and the second network device based on the receiving power P1 of the first network device and the receiving power P2 of the second network device. The receiving power P2 of the second network device can be sent by the second network device to the first network device.

[0122] After obtaining the path loss difference Δ between the first network device and the second network device, the terminal device can determine the path loss of the second network device according to the path loss of the first network device and the path loss difference Δ. The path loss of the first network device can be determined by the terminal device according to the downlink signal.

[0123] It should be understood that the above-mentioned path loss difference Δ may also be determined by the second network device. For details, please refer to the determination method of the first network device, which will not be elaborated here.

[0124] Optionally, after the second network device determines the beam parameters and / or path loss parameters related to the second network device based on the reference signal, it can send fourth information to the first network device, where the fourth information is used to indicate the beam parameters and / or path loss parameters related to the second network device.

[0125] S403, the terminal device sends an uplink signal according to the first information.

[0126] Exemplarily, the uplink signal may be one or more of PUSCH, PUCCH or SRS.

[0127] In one implementation, the terminal device may determine the transmission power of the uplink signal according to the path loss parameter indicated by the first information, and may also determine the beam for transmitting the uplink signal according to the beam parameter indicated by the first information.

[0128] Specifically, if the terminal device sends an uplink signal to the first network device, the transmission power of the uplink signal can be determined according to the path loss parameters related to the first network device, and the beam for sending the uplink signal can be determined according to the beam parameters related to the first network device. If the terminal device sends an uplink signal to the second network device, the transmission power of the uplink signal can be determined according to the path loss parameters related to the second network device, and the beam for sending the uplink signal can be determined according to the beam parameters related to the second network device.

[0129] In an example, assuming that the beam parameter associated with the first network device indicates beam 1, in the scenario where the terminal device is connected to the first network device, the uplink signal can be precoded using the precoding vector corresponding to beam 1. Assuming that the beam parameter associated with the second network device indicates beam 2, in the scenario where the terminal device is connected to the second network device, the uplink signal can be precoded using the precoding vector corresponding to beam 2.

[0130] In another example, assuming that the beam parameters associated with the first network device indicate beam 1, in a scenario where the terminal device is connected to the first network device, the phases of different transmit antennas of the first network device can be adjusted to phase parameters corresponding to beam 1 before transmitting an uplink signal. Assuming that the beam parameters associated with the second network device indicate beam 2, in a scenario where the terminal device is connected to the second network device, the phases of different transmit antennas of the second network device can be adjusted to phase parameters corresponding to beam 2 before transmitting an uplink signal.

[0131] It should be noted that the above two examples are only described by taking the beam parameter indicating one beam as an example. In a specific implementation, the beam parameter may also indicate multiple beams. Taking the beam parameter related to the first network device as an example, the beam parameter related to the first network device may indicate at least one beam, wherein the beam and the uplink signal may be associated, so that when the uplink signal is sent to the first network device, it can be sent through the beam associated with the uplink signal. For example, assuming that the beam parameter related to the first network device indicates two beams, and the two beams are associated with uplink signal 1, the terminal device can send uplink signal 1 to the first network device through the two beams. Specifically, uplink signal 1 can be sent simultaneously through two beams, or uplink signal 1 can be sent through different beams at different times. For another example, assuming that the beam parameter related to the first network device indicates three beams, wherein beam 1 and beam 2 are associated with uplink signal 1, and beam 3 is associated with uplink signal 2, the terminal device can send uplink signal 1 to the first network device through beam 1 and beam 2, and send uplink signal 2 to the first network device through beam 3. For another example, assume that the beam parameters related to the first network device indicate two beams, where beam 1 is associated with uplink signal 1 and uplink signal 2, and beam 2 is associated with uplink signal 3. Therefore, the terminal device can send uplink signal 1 or uplink signal 2 to the first network device through beam 1, and can send uplink signal 2 to the first network device through beam 3.

[0132] Similarly, the path loss parameter may also indicate one or more path losses. Taking the path loss parameter related to the first network device as an example, the path loss parameter related to the first network device may indicate at least one path loss, wherein the path loss may be associated with the uplink signal, so that when the uplink signal is sent to the first network device, the transmission power may be determined by the path loss associated with the uplink signal. For example, assuming that the path loss parameter related to the first network device indicates 1 path loss, wherein the path loss is associated with uplink signal 1, so the terminal device may determine the transmission power of uplink signal 1 according to path loss 1. For another example, assuming that the path loss parameter related to the first network device indicates 2 path losses, wherein path loss 1 is associated with uplink signal 1, and path loss 2 is associated with uplink signal 2, so the terminal device may determine the transmission power of uplink signal 1 according to path loss 1, and determine the transmission power of uplink signal 2 according to path loss 2. For another example, assume that the path loss parameters related to the first network device indicate two path losses, where path loss 1 is associated with uplink signal 1 and uplink signal 2, and path loss 2 is associated with uplink signal 3. Therefore, the terminal device can determine the transmission power of uplink signal 1 and uplink signal 2 based on path loss 1, and determine the transmission power of uplink signal 3 based on path loss 2.

[0133] Optionally, the first information may also indicate an association relationship between a beam and an uplink signal, an association relationship between a path loss and an uplink signal, and so on.

[0134] In this application, a reference signal for beam measurement is sent after PRACH is sent, so that the UL-only TRP can measure the optimal beam direction for the terminal device to point to the UL-only TRP, which is beneficial for the terminal device to align the beam direction with the UL-only TRP when sending uplink signals in the future, thereby improving the coverage performance of the uplink signal. In addition, by providing a reference signal for path loss measurement for the UL-only TRP in the initial access phase, the path loss from the terminal device to the UL-only TRP can be measured more accurately, thereby improving the coverage performance of the uplink signal.

[0135] Based on the same inventive concept as the method embodiment, the present application embodiment provides a communication device, the structure of which can be as follows: Fig.12 As shown, it includes a communication unit 1101 and a processing unit 1102.

[0136] In one embodiment, the communication device can be used to implement Figure 4In the embodiment of the method performed by the terminal device, the device may be the terminal device itself, or a chip or chipset in the terminal device or a part of the chip for performing the function of the related method. Among them, the processing unit 1102 is used to send a reference signal through N beams through the communication unit 1101, where N is an integer greater than 0; and, obtain first information through the communication unit 1101, the first information is used to indicate at least one of the following: beam parameters and / or path loss parameters related to the first network device, or beam parameters and / or path loss parameters related to the second network device, the second network device supports receiving uplink signals but does not support sending downlink signals; and, send an uplink signal through the communication unit 1101 according to the first information.

[0137] Optionally, the processing unit 1102 is further used to: send M random access signals through the communication unit 1101, the time domain resources occupied by the reference signal and the time domain resources occupied by the random access signal are associated with each other, and M is an integer greater than 0.

[0138] Exemplarily, the time domain resource occupied by the kth transmission of the reference signal is the time domain resource that is spaced P symbols after the time domain resource occupied by the k*mth transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0;

[0139] Alternatively, the time domain resources occupied by the reference signal are the time domain resources spaced Q symbols after the time domain resources occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

[0140] Optionally, the processing unit 1102 is further used to: receive second information through the communication unit 1101, where the second information is used to indicate the time domain resources occupied by the reference signal and / or the frequency domain resources occupied by the reference signal.

[0141] When the uplink signal is sent through the communication unit 1101 according to the first information, the processing unit 1102 can be specifically used to: determine the transmission power of the uplink signal according to the path loss parameter indicated by the first information; and send the uplink signal with the transmission power through the communication unit 1101.

[0142] When the uplink signal is sent through the communication unit 1101 according to the first information, the processing unit 1102 can be specifically used to: determine the beam for sending the uplink signal according to the beam parameters indicated by the first information; and send the uplink signal through the beam through the communication unit 1101.

[0143] Optionally, the processing unit 1102 is further used to: receive third information through the communication unit 1101, where the third information is used to indicate the transmission power of the reference signal.

[0144] The processing unit 1102, when sending the reference signal through N beams through the communication unit 1101, can be specifically used to: send the reference signal through K ports respectively, where the K ports are related to the N beams, and K is an integer not less than N.

[0145] In one embodiment, the communication device can be used to implement Figure 4 In the embodiment of the method performed by the first network device, the device may be the first network device itself, or may be a chip or chipset in the first network device or a part of the chip used to perform the function of the related method. Among them, the processing unit 1102 is used to send the second information through the communication unit 1101, the second information is used to indicate the time domain resources occupied by the reference signal and / or the frequency domain resources occupied by the reference signal; and, receive the fourth information through the communication unit 1101, the fourth information is used to indicate the beam parameters and / or path loss parameters related to the second network device, the second network device supports receiving uplink signals but does not support sending downlink signals; and send the first information through the communication unit 1101, the first information includes at least one of the following: the fourth information, or the beam parameters and / or path loss parameters related to the first network device.

[0146] Optionally, the processing unit 1102 is further used to: receive M random access signals through the communication unit 1101, the time domain resources occupied by the reference signal and the time domain resources occupied by the random access signal are associated with each other, and M is an integer greater than 0.

[0147] Exemplarily, the time domain resource occupied by the kth transmission of the reference signal is the time domain resource that is spaced P symbols after the time domain resource occupied by the k*mth transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0;

[0148] Alternatively, the time domain resources occupied by the reference signal are the time domain resources spaced Q symbols after the time domain resources occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

[0149] Optionally, the processing unit 1102 is further used to: receive a reference signal through the communication unit 1101 on the resource indicated by the second information; and determine beam parameters and / or path loss parameters related to the first network device according to the reference signal.

[0150] Optionally, the processing unit 1102 is further used to: send third information through the communication unit 1101, where the third information is used to indicate the transmission power of the reference signal.

[0151] In one embodiment, the communication device can be used to implement Figure 4In the embodiment of the method performed by the second network device, the device may be the second network device itself, or may be a chip or chipset in the second network device or a part of the chip used to perform the function of the related method. Among them, the processing unit 1102 is used to receive the second information through the communication unit 1101, and the second information is used to indicate the time domain resources occupied by the reference signal and / or the frequency domain resources occupied by the reference signal; and, receive the reference signal on the resources indicated by the second information through the communication unit 1101; and, determine the beam parameters and / or path loss parameters related to the second network device according to the reference signal, and the second network device supports receiving uplink signals but does not support sending downlink signals; and, send fourth information to the first network device through the communication unit 1101, and the fourth information is used to indicate the beam parameters and / or path loss parameters related to the second network device.

[0152] Exemplarily, there is a correlation between the time domain resources occupied by the reference signal and the time domain resources occupied by the M random access signals sent by the terminal device to the first network device, where M is an integer greater than 0.

[0153] Exemplarily, the time domain resource occupied by the kth transmission of the reference signal is the time domain resource that is spaced P symbols after the time domain resource occupied by the k*mth transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0;

[0154] Alternatively, the time domain resources occupied by the reference signal are the time domain resources spaced Q symbols after the time domain resources occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

[0155] Optionally, the processing unit 1102 is further used to: receive third information through the communication unit 1101, where the third information is used to indicate the transmission power of the reference signal.

[0156] The division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. It is understood that the functions or implementations of each module in the embodiments of the present application may further refer to the relevant description of the method embodiment.

[0157] In one possible approach, the communication device may be as follows Fig.13As shown, the device may be a communication device or a chip in a communication device, wherein the communication device may be a terminal device in the above embodiment or a network device in the above embodiment. The device includes a processor 1201 and a communication interface 1202, and may also include a memory 1203. Among them, the processing unit 1102 may be the processor 1201. The communication unit 1101 may be the communication interface 1202. Optionally, the processor 1201 and the memory 1203 may also be integrated together.

[0158] The processor 1201 may be a CPU, or a digital processing unit, etc. The communication interface 1202 may be a transceiver, or an interface circuit such as a transceiver circuit, or a transceiver chip, etc. The device further includes: a memory 1203, which is used to store the program executed by the processor 1201. The memory 1203 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory 1203 is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0159] The processor 1201 is used to execute the program code stored in the memory 1203, specifically to execute the actions of the processing unit 1102, which will not be described in detail in this application. The communication interface 1202 is specifically used to execute the actions of the communication unit 1101, which will not be described in detail in this application.

[0160] The specific connection medium between the communication interface 1202, the processor 1201 and the memory 1203 is not limited in the embodiment of the present application. Fig.12 The memory 1203, the processor 1201 and the communication interface 1202 are connected via a bus 1204. Fig.12 The connections between other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.12 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.

[0161] An embodiment of the present invention further provides a computer-readable storage medium for storing computer software instructions required to be executed by the above-mentioned processor, which includes a program required to be executed by the above-mentioned processor.

[0162] The present application also provides a communication system, including a Figure 4 In the embodiment of the terminal device function communication device and for realizing Figure 4 A communication device and a method for implementing a first network device function in an embodiment Figure 4 The second network device functions as a communication device in an embodiment.

[0163] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0164] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block 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, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0165] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0166] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0167] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and 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 method, characterized in that: The method comprises: Sending a reference signal through N beams, where N is an integer greater than 0; Acquire first information, where the first information is used to indicate at least one of the following: a beam parameter related to a first network device, a path loss parameter related to the first network device, a beam parameter related to a second network device, or a path loss parameter related to the second network device, where the second network device supports receiving uplink signals and does not support sending downlink signals; An uplink signal is sent according to the first information.

2. The method according to claim 1, characterized in that The method further comprises: Sending M random access signals, the time domain resources occupied by the reference signal and the time domain resources occupied by the random access signal are associated with each other, and M is an integer greater than 0.

3. The method according to claim 2, characterized in that The time domain resource occupied by the kth transmission of the reference signal is the time domain resource that is spaced P symbols after the time domain resource occupied by the k*mth transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0; Alternatively, the time domain resource occupied by the reference signal is the time domain resource that is Q symbols apart from the time domain resource occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: Second information is received, where the second information is used to indicate time domain resources occupied by the reference signal and / or frequency domain resources occupied by the reference signal.

5. The method according to any one of claims 1 to 4, characterized in that: The sending an uplink signal according to the first information includes: Determining the transmit power of the uplink signal according to the path loss parameter indicated by the first information; The uplink signal is sent with the transmit power.

6. The method according to any one of claims 1 to 5, characterized in that: The sending an uplink signal according to the first information includes: Determine a beam for sending the uplink signal according to the beam parameters indicated by the first information; The uplink signal is sent through the beam.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: Third information is received, where the third information is used to indicate a transmit power of the reference signal.

8. The method according to any one of claims 1 to 7, characterized in that: The sending of the reference signal through N beams includes: The reference signals are respectively sent through K ports, wherein the K ports are associated with the N beams, and K is an integer not less than N.

9. A communication method, characterized in that: The method comprises: Sending second information, where the second information is used to indicate time domain resources occupied by the reference signal and / or frequency domain resources occupied by the reference signal; receiving fourth information, where the fourth information is used to indicate beam parameters and / or path loss parameters related to a second network device, where the second network device supports receiving uplink signals but does not support sending downlink signals; Sending first information, wherein the first information includes at least one of the following: the fourth information, a beam parameter related to the first network device, or a path loss parameter related to the first network device.

10. The method according to claim 9, characterized in that The method further comprises: The random access signal is received M times, the time domain resource occupied by the reference signal and the time domain resource occupied by the random access signal are associated with each other, and M is an integer greater than 0.

11. The method according to claim 10, characterized in that The time domain resource occupied by the kth transmission of the reference signal is the time domain resource that is spaced P symbols after the time domain resource occupied by the k*mth transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0; Alternatively, the time domain resource occupied by the reference signal is the time domain resource that is Q symbols apart from the time domain resource occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

12. The method according to any one of claims 9 to 11, characterized in that: The method further comprises: receiving the reference signal on the resource indicated by the second information; Determine beam parameters and / or path loss parameters related to the first network device according to the reference signal.

13. The method according to any one of claims 9 to 12, characterized in that: The method further comprises: Send third information, where the third information is used to indicate the transmit power of the reference signal.

14. A communication method, characterized in that: The method comprises: receiving second information, where the second information is used to indicate time domain resources occupied by the reference signal and / or frequency domain resources occupied by the reference signal; receiving a reference signal on a resource indicated by the second information; Determining beam parameters and / or path loss parameters related to a second network device according to the reference signal, wherein the second network device supports receiving uplink signals but does not support sending downlink signals; Send fourth information, where the fourth information is used to indicate beam parameters and / or path loss parameters related to the second network device.

15. The method according to claim 14, characterized in that There is a correlation between the time domain resources occupied by the reference signal and the time domain resources occupied by the M random access signals sent by the terminal device to the first network device, and M is an integer greater than 0.

16. The method according to claim 15, characterized in that The time domain resource occupied by the kth transmission of the reference signal is the time domain resource that is spaced P symbols after the time domain resource occupied by the k*mth transmission of the random access signal, where k is an integer greater than 0, m is an integer greater than 0, and k*m is less than or equal to M, and P is an integer greater than 0; Alternatively, the time domain resource occupied by the reference signal is the time domain resource that is Q symbols apart from the time domain resource occupied by the Mth transmission of the random access signal, where Q is an integer greater than 0.

17. The method according to any one of claims 14 to 16, characterized in that: The method further comprises: Third information is received, where the third information is used to indicate a transmit power of the reference signal.

18. A communication device, characterized in that: The method comprises a unit or module for executing the method according to any one of claims 1 to 8, or comprises a unit or module for executing the method according to any one of claims 9 to 13, or comprises a unit or module for executing the method according to any one of claims 14 to 17.

19. A computer-readable storage medium, characterized in that: The computer storage medium stores computer-readable instructions, and when the computer-readable instructions are executed on the communication device, the method according to any one of claims 1 to 8 is executed, or the method according to any one of claims 9 to 13 is executed, or the method according to any one of claims 14 to 17 is executed.

20. A computer program product, characterized in that When the computer program product runs on a device, the device is enabled to execute the method according to any one of claims 1 to 8, the method according to any one of claims 9 to 13, or the method according to any one of claims 14 to 17.

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