Method and device for determining path loss

Abstract

The invention provides a path loss determination method and device, and relates to the technical field of communication. The method comprises the following steps: the terminal equipment receives first information sent by network equipment; determining a path loss reference signal according to the first information; and calculating the uplink path loss based on the path loss reference signal. The invention provides a technical scheme for determining the uplink path loss of the terminal equipment, and by applying the technical scheme of the embodiment, the path loss can be calculated for the target TRP, so that the uplink power control is realized.

Description

Method and device for determining path loss Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for determining path loss. Background Art

[0002] In a multi-transmission reception point (M-TRP) scenario, the path loss from a terminal device to different transmission reception points (TRPs) often varies. When a TRP switch occurs, the corresponding uplink path loss needs to be determined to implement uplink power control. However, there is currently a lack of technical solutions for determining the uplink path loss of terminal devices.

[0003] Summary of the Invention

[0004] The present disclosure proposes a method and apparatus for determining path loss, and provides a technical solution for determining the uplink path loss of a terminal device.

[0005] An embodiment of the first aspect of the present disclosure provides a method for determining path loss, which is executed by a terminal device, and the method includes: receiving first information sent by a network device; determining a path loss reference signal (PL RS) based on the first information; and calculating an uplink path loss based on the determined path loss reference signal.

[0006] In some embodiments of the present disclosure, the first information includes at least one of the following:

[0007] Downlink Control Information (DCI); Media Access Control Element (MAC CE).

[0008] In some embodiments of the present disclosure, the DCI includes: sounding reference signal (SRS) resource set indication information; determining the path loss reference signal based on the first information includes: determining the first SRS resource set included in the SRS resource set indication information; and determining the path loss reference signal associated with the first SRS resource set from a first association relationship between the SRS resource set and the path loss reference signal.

[0009] In some embodiments of the present disclosure, the method further includes: receiving the first association relationship sent by the network device; or determining the first association relationship through a protocol agreement.

[0010] In some embodiments of the present disclosure, the DCI includes transmission configuration indicator (TCI) status information; determining the path loss reference signal based on the first information includes: determining a first TCI state included in the TCI status information; and determining a path loss reference signal associated with the first TCI state from a second association relationship between the TCI state and the path loss reference signal.

[0011] In some embodiments of the present disclosure, the method further includes: receiving the second association relationship sent by the network device; or determining the second association relationship through a protocol agreement.

[0012] In some embodiments of the present disclosure, determining the path loss reference signal based on the first information includes: determining a first control resource set (CORESET) in which the DCI is located; and determining a path loss reference signal associated with the first CORESET from a third association relationship between the CORESET and the path loss reference signal.

[0013] In some embodiments of the present disclosure, the method further includes: receiving the third association relationship sent by the network device; or determining the third association relationship through a protocol agreement.

[0014] In some embodiments of the present disclosure, determining the path loss reference signal based on the first information includes: when the DCI includes SRS resource set indication information, determining the path loss reference signal based on the SRS resource set indication information and the first association relationship between the SRS resource set and the path loss reference signal; when the DCI does not include SRS resource set indication information and the DCI includes TCI status information, determining the path loss reference signal based on the TCI status information and the second association relationship between the TCI status and the path loss reference signal; when the DCI does not include SRS resource set indication information and the DCI does not include TCI status information, determining the path loss reference signal based on the first CORESET in which the DCI is located and the third association relationship between the CORESET and the path loss reference signal.

[0015] In some embodiments of the present disclosure, determining a path loss reference signal according to the first information includes: determining a path loss reference signal according to an independent field set in the DCI.

[0016] In some embodiments of the present disclosure, determining a path loss reference signal based on the first information includes: determining a path loss reference signal based on value information of a field in the DCI.

[0017] In some embodiments of the present disclosure, determining a path loss reference signal according to the first information includes: determining a path loss reference signal according to the separately configured MAC CE.

[0018] In some embodiments of the present disclosure, determining a path loss reference signal according to the first information includes: determining a path loss reference signal according to a reservation status of a field in the MAC CE.

[0019] In some embodiments of the present disclosure, the calculating the uplink path loss based on the determined path loss reference signal includes: when at least two path loss reference signals are determined according to the first information, using the at least two path loss reference signals to respectively calculate the uplink path loss, and using one of the following first processing rules to determine the uplink path loss to be used:

[0020] Selecting a minimum uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used;

[0021] Selecting the largest uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used;

[0022] A weighted sum is performed on the at least two calculated uplink path losses, and the obtained sum is used as the uplink path loss to be used.

[0023] In some embodiments of the present disclosure, the method further includes: receiving the first processing rule sent by the network device; or determining the first processing rule through a protocol agreement.

[0024] In some embodiments of the present disclosure, the method further includes: receiving a first weighting coefficient sent by the network device; or determining the first weighting coefficient through a protocol agreement, wherein the first weighting coefficient is used for weighted sum calculation of the at least two uplink path losses.

[0025] In some embodiments of the present disclosure, the calculation of the uplink path loss based on the determined path loss reference signal includes: when at least two path loss reference signals are determined based on the first information, determining the path loss reference signal corresponding to each antenna port to calculate the uplink path loss based on the fourth association relationship between the path loss reference signal and the antenna port.

[0026] In some embodiments of the present disclosure, the method further includes: receiving the fourth association relationship sent by the network device; or determining the fourth association relationship through a protocol agreement.

[0027] In some embodiments of the present disclosure, when a first antenna port of any one of the terminal devices corresponds to using multiple path loss reference signals, the uplink path losses are calculated respectively using the multiple path loss reference signals, and the uplink path loss to be used by the first antenna port is determined using one of the following second processing rules:

[0028] Selecting a minimum uplink path loss from the calculated multiple uplink path losses as the uplink path loss to be used by the first antenna port;

[0029] Selecting a maximum uplink path loss from the calculated multiple uplink path losses as the uplink path loss to be used by the first antenna port;

[0030] A weighted sum is performed on the multiple calculated uplink path losses, and the obtained result is used as the uplink path loss to be used by the first antenna port.

[0031] In some embodiments of the present disclosure, the method further includes: receiving the second processing rule sent by the network device; or determining the second processing rule through a protocol agreement.

[0032] In some embodiments of the present disclosure, the method further includes: receiving a second weighting coefficient sent by the network device; or determining the second weighting coefficient through a protocol agreement, and the second weighting coefficient is used for weighted summation calculation of the multiple uplink path losses.

[0033] An embodiment of the second aspect of the present disclosure provides a method for determining path loss, which is executed by a network device. The method includes: sending first information to a terminal device, the first information being used to determine a path loss reference signal, and the path loss reference signal being used to calculate the uplink path loss of the terminal device.

[0034] In some embodiments of the present disclosure, the first information includes at least one of the following:

[0035] DCI; MAC CE.

[0036] In some embodiments of the present disclosure, the DCI includes: SRS resource set indication information.

[0037] In some embodiments of the present disclosure, the method further includes: sending a first association relationship between the SRS resource set and the path loss reference signal to the terminal device.

[0038] In some embodiments of the present disclosure, the DCI includes transmission configuration indication TCI status information.

[0039] In some embodiments of the present disclosure, the method further includes: sending a second association relationship between the TCI state and the path loss reference signal to the terminal device.

[0040] In some embodiments of the present disclosure, the method further includes: sending a third association relationship between a control resource set CORESET and a path loss reference signal to the terminal device.

[0041] In some embodiments of the present disclosure, an independent field in the DCI is used to determine a path loss reference signal.

[0042] In some embodiments of the present disclosure, the value information of the field in the DCI is used to determine a path loss reference signal.

[0043] In some embodiments of the present disclosure, the separately configured MAC CE is used to determine a path loss reference signal.

[0044] In some embodiments of the present disclosure, the reservation status of the field in the MAC CE is used to determine a path loss reference signal.

[0045] In some embodiments of the present disclosure, the method also includes: sending a first processing rule to the terminal device, and the first processing rule is used to calculate the uplink path loss respectively using the at least two path loss reference signals when the terminal device determines to obtain at least two path loss reference signals based on the first information, and determine the uplink path loss to be used therefrom.

[0046] In some embodiments of the present disclosure, the method further includes: sending a first weighting coefficient to the terminal device, where the first weighting coefficient is used to perform a weighted sum calculation on at least two uplink path losses.

[0047] In some embodiments of the present disclosure, the method further includes: sending a fourth association relationship between a path loss reference signal and an antenna port to the terminal device.

[0048] In some embodiments of the present disclosure, the method also includes: sending a second processing rule to the terminal device, wherein the second processing rule is used to calculate the uplink path loss respectively using the multiple path loss reference signals when the first antenna port of any one of the terminal devices corresponds to the use of multiple path loss reference signals, and determine the uplink path loss that the first antenna port needs to use therefrom.

[0049] In some embodiments of the present disclosure, the method further includes: sending a second weighting coefficient to the terminal device, wherein the second weighting coefficient is used to perform weighted summation calculation on multiple uplink path losses to obtain the uplink path loss required to be used by the first antenna port.

[0050] An embodiment of the third aspect of the present disclosure provides a device for determining path loss, which is applied to a terminal device, and the device includes: a first communication module, configured to receive first information sent by a network device; a determination module, configured to determine a path loss reference signal based on the first information; and calculate the uplink path loss based on the determined path loss reference signal.

[0051] An embodiment of the fourth aspect of the present disclosure provides a device for determining path loss, which is applied to a network device. The device includes: a second communication module, configured to send first information to a terminal device, wherein the first information is used to determine a path loss reference signal, and the path loss reference signal is used to calculate the uplink path loss of the terminal device.

[0052] A fifth aspect embodiment of the present disclosure provides a communication system, including: a terminal device and a network device; the terminal device executes the method as described in the first aspect embodiment, and the network device executes the method as described in the second aspect embodiment.

[0053] The sixth aspect embodiment of the present disclosure provides a communication device, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method described in the first aspect embodiment or the second aspect embodiment.

[0054] The seventh aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in the first aspect embodiment or the second aspect embodiment can be implemented.

[0055] The present disclosure provides a method and apparatus for determining path loss, providing a technical solution for determining the uplink path loss of a terminal device. Specifically, the terminal device can receive first information sent by a network device; then, based on the first information, determine a path loss reference signal; and then, based on the determined path loss reference signal, calculate the uplink path loss. By applying the technical solution of the present disclosure, path loss can be calculated for a target TRP, thereby achieving uplink power control.

[0056] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0058] FIG1 is a schematic diagram of the architecture of a communication processing system according to an embodiment of the present disclosure;

[0059] FIG2 is a timing diagram of a method for determining path loss according to an embodiment of the present disclosure;

[0060] FIG3 is a schematic flow chart of a method for determining path loss according to an embodiment of the present disclosure;

[0061] FIG4 is a schematic flow chart of a method for determining path loss according to an embodiment of the present disclosure;

[0062] FIG5 is a block diagram of a device for determining path loss according to an embodiment of the present disclosure;

[0063] FIG6 is a block diagram of a device for determining path loss according to an embodiment of the present disclosure;

[0064] FIG7 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

[0065] FIG8 is a schematic structural diagram of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0066] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure and are not to be construed as limiting the present disclosure. It should be noted that the embodiments of the present disclosure and the features in the embodiments may be combined with each other unless there is a conflict.

[0067] The present disclosure provides a method for determining path loss. In some embodiments, the terms "path loss determination method" and "information processing method" and "communication method" are interchangeable; "path loss determination device" and "information processing device" and "communication device" are interchangeable; and "path loss determination system" and "information processing system" and "communication system" are interchangeable.

[0068] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0069] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0070] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0071] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0072] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0073] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0074] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0075] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0076] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0077] In some embodiments, “including A,” “containing A,” “used to indicate A in,” and “carrying A with” can be interpreted as directly carrying A or indirectly indicating A.

[0078] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0079] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0080] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0081] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0082] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0083] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0084] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0085] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0086] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0087] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0088] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0089] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0090] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0091] In some embodiments, the terms "search space", "search space set", "search space configuration", "search space set configuration", "control resource set (CORESET)", "CORESET configuration" and the like may be used interchangeably.

[0092] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0093] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0094] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0095] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", and "resource element (RE)" can be used interchangeably.

[0096] In some embodiments, terms such as wireless access scheme and waveform may be used interchangeably.

[0097] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like can be used interchangeably.

[0098] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0099] In some embodiments, "obtain", "get", "obtain", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from a protocol, obtaining by self-processing, autonomous implementation, etc.

[0100] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0101] In some embodiments, "predetermined" and "preset" can be interpreted as pre-specified in a protocol, etc., or can be interpreted as a pre-set action performed by a device, etc.

[0102] In some embodiments, determining may be interpreted as judging, calculating, computing, processing, deriving, investigating, searching, looking up, retrieving, ascertaining, receiving, transmitting, inputting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, “assuming,” “expecting,” “considering,” broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, and the like, but is not limited thereto.

[0103] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0104] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0105] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0106] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0107] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0108] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0109] With the continuous development of wireless communications, the demand for communication capabilities is increasing. For future applications such as augmented reality (AR) and virtual reality (VR), the Internet of Vehicles (IoV), and the Internet of Things (IoT), ultra-high-speed, ultra-low-latency, and ultra-large bandwidth communications will become the norm. To meet these requirements, a growing number of new technologies are being proposed. Multiple-input, multiple-output (MIMO) technology has ushered in a new era in the development and utilization of spatial resources in mobile communication systems.

[0110] Distributed MIMO has evolved from traditional classical MIMO and expands its application scope. Distributed MIMO shortens the distance between the transmission reception point (TRP) and the terminal device, reducing wireless signal propagation losses. Distributed MIMO transmission signals can reach the terminal device from different TRPs, overcoming the blocking effects of propagation. Therefore, distributed MIMO will play a vital role in millimeter-wave and terahertz communications. For terminals, distributed MIMO technology means having multiple TRPs (Multi Transmission Reception Points, M-TRPs) serving them simultaneously. Through the combined transmission or dynamic switching of multiple TRPs, the terminal's service needs for high speed, low latency, and high reliability can be met.

[0111] When the backhaul link between collaborative TRPs is ideal, the collaborative TRPs can share a scheduler and conduct real-time information exchange between TRPs. In this case, the collaborative TRPs can share a physical downlink control channel (PDCCH), which is the M-TPR transmission scheme of single-DCI (also known as S-DCI). When the backhaul link capability between collaborative TRPs is relatively poor, the information exchange delay between collaborative TRPs is relatively large, and sharing a PDCCH is difficult. In this case, it is appropriate to use different PDCCHs for scheduling, which is the M-TPR transmission scheme of Multi-DCI (also known as M-DCI).

[0112] In M-TRP scenarios, the path loss from a terminal device to different TRPs often varies. When a TRP switch occurs, the corresponding uplink path loss needs to be determined to implement uplink power control. However, there is currently a lack of technical solutions for determining the uplink path loss of terminal devices.

[0113] To this end, this embodiment proposes a method and apparatus for determining path loss, and provides a technical solution for determining the uplink path loss of a terminal device.

[0114] The method and device for determining the path loss provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0115] FIG1 shows a structural diagram of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , the system architecture may include a terminal device 11 and a network device 12 .

[0116] In some examples, the terminal device 11 can be called a terminal, user equipment, mobile station (MS), mobile terminal (MT), etc. The terminal device 11 can also be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality device, an augmented reality device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal device 11.

[0117] In some examples, the network device 12 may be an entity on the network side for transmitting or receiving signals. For example, the network device 12 may be an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device 12. The network device 12 provided in the embodiments of the present disclosure may be composed of a central unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the protocol layer of a network device, such as a base station, and the functions of some protocol layers are placed in the CU for centralized control, while the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0118] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0119] The following embodiments of the present disclosure may be applied to the communication system shown in Figure 1, or a portion of the entities, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, whether direct or indirect, and may be wired or wireless.

[0120] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0121] In some examples, network device 12 may send first information to terminal device 11; terminal device 11 receives the first information sent by network device 12; then, based on the first information, determines a path loss reference signal; and then calculates the uplink path loss based on the determined path loss reference signal. For example, network device 12 may determine the path loss reference signal used by terminal device 11 for calculating the uplink path loss, and terminal device 11, in accordance with instructions from network device 12, uses the indicated path loss reference signal to calculate the uplink path loss.

[0122] This embodiment provides a technical solution for determining the uplink path loss of a terminal device. By applying the technical solution of this embodiment, the path loss can be calculated for the target TRP, thereby achieving uplink power control.

[0123] Further, to illustrate the specific execution process of the above-mentioned communication system, FIG2 shows a timing diagram of a method for determining path loss according to an embodiment of the present disclosure. The method is applied to the communication system, as shown in FIG2, and may include the following steps:

[0124] Step 201: The network device sends first information to the terminal device.

[0125] In some embodiments, the terminal device receives the first information.

[0126] In some embodiments, the first information may be used to determine a path loss reference signal used by the terminal device to calculate the uplink path loss. For example, the first information may be an indication information or a signaling, etc., which is used to determine the path loss reference signal.

[0127] For example, the first information can directly instruct the terminal device to use reference signal A to calculate the uplink path loss, or can instruct the terminal device to use any reference signal other than reference signal B to calculate the uplink path loss, etc. That is, the first information can be used to indicate to the terminal device the reference signal to be used when calculating the uplink path loss, or the first information can be used to indicate to the terminal device a reference signal that is not required to be used / needed to be ignored when calculating the uplink path loss. In short, the first information can reflect the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0128] In some embodiments, the first information may include at least one of the following:

[0129] DCI, MAC CE, etc.

[0130] For example, the first information may be sent via DCI or MAC CE; for example, the first information may be included in the DCI or MAC CE; for example, the first information may specifically be DCI or MAC CE, and so on.

[0131] In some embodiments, the first information may be explicit or implicit, for example, the path loss reference signal used to calculate the uplink path loss may be directly indicated by an element in the first information, and the path loss reference signal used to calculate the uplink path loss may be directly determined based on the elements included in the first information; or, for example, the path loss reference signal used to calculate the uplink path loss may be indirectly indicated by an element in the first information, and when the first information includes a specific element, the path loss reference signal used to calculate the uplink path loss may be determined in some way.

[0132] Step 202: The terminal device determines a path loss reference signal based on the first information.

[0133] The first information may be explicit or implicit.

[0134] In scenarios where the first information is implicit, in some embodiments, the first information may include DCI. When the DCI includes specific information, the path loss reference signal may be determined in a specific manner. For example, the specific information may be SRS resource set indication information or TCI status information.

[0135] Specifically, for example, the path loss reference signal can be determined based on SRS resource set indication information included in the DCI. If the DCI obtained from a network device such as a base station includes SRS resource set indication information, then, for the terminal device, step 202 may specifically include: first determining a first SRS resource set included in the SRS resource set indication information, and then determining a path loss reference signal associated with the first SRS resource set based on a first association relationship between the SRS resource set and the path loss reference signal. It should be understood that the first association relationship may be agreed upon through a protocol, or may be actively obtained by the terminal device, or the first association relationship may be pre-configured for the terminal device by a network device such as a base station, or the first association relationship may be sent to the terminal device by the network device such as a base station together with the first information. If the network device sends the first association relationship between the SRS resource set and the path loss reference signal to the terminal device, the terminal device may receive the first association relationship sent by the network device, and thus use it when determining the path loss reference signal. In addition, the terminal device may also determine the first association relationship through a protocol agreement, etc. This embodiment can determine the TRP corresponding to the uplink beam in advance based on the uplink beam corresponding to the SRS resource set, and then determine the path loss reference signal corresponding to the SRS resource set, thereby determining the first association relationship, so that the path loss reference signal obtained from the first association relationship can be used to calculate the uplink path loss for the corresponding TRP.

[0136] The first association relationship between the SRS resource set and the path loss reference signal can be a one-to-one or many-to-one association relationship, that is, one SRS resource set corresponds to one path loss reference signal, or multiple SRS resource sets correspond to one path loss reference signal. Through this association relationship, a path loss reference signal associated with the first SRS resource set indicated by the SRS resource set indication information can be found as the path loss reference signal for calculating the uplink path loss. In addition, the first association relationship between the SRS resource set and the path loss reference signal can also be a one-to-many association relationship, that is, one SRS resource set corresponds to multiple path loss reference signals. Through this association relationship, multiple path loss reference signals associated with the first SRS resource set indicated by the SRS resource set indication information can be found, and a path loss reference signal can be selected from these path loss reference signals as the path loss reference signal for calculating the uplink path loss.

[0137] Optionally, the path loss reference signal can be determined by, for example, TCI state information included in the first information of the DCI. For example, if the DCI includes TCI state information, correspondingly, for the terminal device, step 202 may specifically include: determining the first TCI state included in the TCI state information; and determining the path loss reference signal associated with the first TCI state from the second association relationship between the TCI state and the path loss reference signal. It should be understood that the second association relationship can be agreed upon through a protocol, or can be actively obtained by the terminal device, or the second association relationship can be pre-configured to the terminal device by a network device such as a base station, or the second association relationship can be sent to the terminal device together with the first information by a network device such as a base station. For example, the network device sends the second association relationship between the TCI state and the path loss reference signal to the terminal device; correspondingly, the terminal device receives the second association relationship sent by the network device, which can be used when determining the path loss reference signal; in addition, the terminal device can also determine the second association relationship through a protocol agreement, etc. This embodiment can determine the TRP corresponding to the beam in advance based on the beam indicated by the TCI state, and then determine the path loss reference signal corresponding to the TCI state, thereby determining a second association relationship, so that the path loss reference signal obtained from the second association relationship can be used to calculate the uplink path loss for the corresponding TRP.

[0138] The second association between the TCI state and the path loss reference signal can be a one-to-one or many-to-one association, i.e., one TCI state corresponds to one path loss reference signal, or multiple TCI states correspond to one path loss reference signal. Through this association, a path loss reference signal associated with the first TCI state included in the TCI state information can be found as the path loss reference signal for calculating the uplink path loss. Alternatively, the second association between the TCI state and the path loss reference signal can be a one-to-many association, i.e., one TCI state corresponds to multiple path loss reference signals. Through this association, multiple path loss reference signals associated with the first TCI state included in the TCI state information can be found, and one path loss reference signal can be selected from these path loss reference signals as the path loss reference signal for calculating the uplink path loss.

[0139] Optionally, the path loss reference signal can be determined based on the CORESET in which the DCI is located in the first information, for example, DCI. For example, the first information may include DCI. Accordingly, step 202 may specifically include: determining the first CORESET in which the DCI is located, and determining the path loss reference signal associated with the first CORESET based on a third association between the CORESET and the path loss reference signal. It should be understood that the third association may be agreed upon through a protocol, or may be actively acquired by the terminal device, or the third association may be pre-configured for the terminal device by a network device such as a base station, or the third association may be sent to the terminal device by a network device such as a base station together with the first information. For example, the network device may send the third association between the CORESET and the path loss reference signal to the terminal device; in response, the terminal device receives the third association sent by the network device, and can use it when determining the path loss reference signal. In addition, the terminal device may also determine the third association through a protocol agreement, etc. CORESET can be considered as a specific time-frequency resource and can be sent using a corresponding beam. This embodiment can determine the path loss reference signal corresponding to CORESET in advance based on the TRP corresponding to the beam, and then determine the third association relationship, so that the path loss reference signal obtained from the third association relationship can be used to calculate the uplink path loss for the corresponding TRP.

[0140] The third association relationship between the CORESET and the path loss reference signal can be a one-to-one or many-to-one association relationship, that is, one CORESET corresponds to one path loss reference signal, or multiple CORESETs correspond to one path loss reference signal. Through this association relationship, a path loss reference signal associated with the first CORESET where the DCI is located can be found as the path loss reference signal for calculating the uplink path loss. In addition, the third association relationship between the CORESET and the path loss reference signal can also be a one-to-many association relationship, that is, one CORESET corresponds to multiple path loss reference signals. Through this association relationship, multiple path loss reference signals associated with the first CORESET where the DCI is located can be found, and a path loss reference signal can be selected from these path loss reference signals as the path loss reference signal for calculating the uplink path loss.

[0141] It should be understood that the association relationship can be determined by one or more of the SRS resource set indication information, TCI status information or CORESET. That is, one or more path reference signals are determined by the SRS resource set indication information, TCI status information or CORESET and the association relationship corresponding to the path loss reference signal. The path reference signals determined by different methods may be the same or different. In this case, they can be determined as the path reference signal for calculating the uplink path loss in a priority manner. Alternatively, the path reference signal for calculating the uplink path loss can also be determined in a pre-agreed manner. For example, it is considered that the path reference signal determined by the SRS resource set and the first association relationship has the highest priority. For example, the path loss reference signal A is determined by the SRS resource set and the first association relationship, and the path loss reference signal B different from the path loss reference signal A is determined by the TCI status information and the second association relationship. The terminal device can use the path loss reference signal A as the path loss reference signal for calculating the uplink path loss. In some examples, step 202 may specifically include: when the DCI includes SRS resource set indication information, determining the path loss reference signal based on the SRS resource set indication information and the first association relationship between the SRS resource set and the path loss reference signal; when the DCI does not include SRS resource set indication information and the DCI includes TCI status information, determining the path loss reference signal based on the TCI status information and the second association relationship between the TCI status and the path loss reference signal; when the DCI does not include SRS resource set indication information and the DCI does not include TCI status information, determining the path loss reference signal based on the first CORESET in which the DCI is located and the third association relationship between the CORESET and the path loss reference signal.

[0142] By applying this priority processing method, if the DCI includes SRS resource set indication information, the first association relationship between the uplink SRS resource set and the path loss reference signal is first used to find the corresponding path loss reference signal, which is more in line with this application scenario. In addition, if the DCI does not include SRS resource set indication information, but the DCI includes TCI status information, the second association relationship between the TCI status and the path loss reference signal is used to determine the path loss reference signal. This is because the TCI status can support more beams, and the TCI status can indicate more specifically and flexibly. Finally, if the DCI does not include SRS resource set indication information and the DCI does not include TCI status information, the path loss reference signal is determined based on the first CORESET where the DCI is located and the third association relationship between the CORESET and the path loss reference signal to ensure that the path loss reference signal used by the terminal device to calculate the uplink path loss can be found.

[0143] It should be understood that in addition to the above-mentioned optional priority methods, other priority methods may also be used, which are not limited in this embodiment. For example, when the DCI includes TCI status information, the path loss reference signal is determined based on the TCI status information and the second association relationship between the TCI status and the path loss reference signal; when the DCI does not include TCI status information and the DCI includes SRS resource set indication information, the path loss reference signal is determined based on the SRS resource set indication information and the first association relationship between the SRS resource set and the path loss reference signal; when the DCI does not include SRS resource set indication information and the DCI does not include TCI status information, the path loss reference signal is determined based on the first CORESET in which the DCI is located and the third association relationship between the CORESET and the path loss reference signal.

[0144] The above details the case where the first information is implicit, for example, determining the path loss reference signal by combining an element included in the first information with an association between the element and the path loss reference signal. However, it should be understood that the first information can also be explicit, that is, the first information directly indicates the path loss reference signal for calculating the uplink path loss.

[0145] In a scenario where the first information is explicit, in some embodiments, the first information may include DCI, and the DCI may directly indicate to the terminal device a path loss reference signal for calculating the uplink path loss. For example, step 202 may specifically include: determining the path loss reference signal based on an independent field set in the DCI. For example, an independent field may be set in the DCI to transmit information indicating the path loss reference signal, and the terminal device may determine the path loss reference signal for calculating the uplink path loss based on the independent field set in the DCI.

[0146] In scenarios where the first information is explicit, in some embodiments, the first information may include DCI, and the DCI may directly indicate a path loss reference signal used by the terminal device to calculate the uplink path loss. For example, step 202 may specifically include: determining the path loss reference signal based on value information of a field in the DCI. For example, the path loss reference signal, i.e., the path loss reference signal used by the terminal device to calculate the uplink path loss, may be indicated by a specific value of another field in the DCI.

[0147] In a scenario where the first information is explicit, in some embodiments, the first information may include a MAC CE. Accordingly, step 202 may specifically include: determining a path loss reference signal based on a separately configured MAC CE. The separately configured MAC CE is a new type of MAC CE that can indicate to the terminal device a path loss reference signal for calculating the uplink path loss.

[0148] In scenarios where the first information is explicit, in some embodiments, the first information may include a MAC CE. Accordingly, step 202 may specifically include: determining a path loss reference signal based on the reservation status of a field in the MAC CE. For example, the reservation status of a specific field in an existing MAC CE may be used to indicate the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0149] Step 203: The terminal device calculates the uplink path loss based on the determined path loss reference signal.

[0150] For example, within the effective time corresponding to the first information, the terminal device uses the path loss reference signal determined in step 202 to calculate the uplink path loss and obtain the corresponding uplink path loss.

[0151] In some embodiments, accordingly, step 203 may specifically include: when at least two path loss reference signals are determined based on the first information, using the at least two path loss reference signals to respectively calculate the uplink path loss, and using one of the following (A, B, C) first processing rules to determine the uplink path loss to be used:

[0152] A. Select the minimum uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used; B. Select the maximum uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used; C. Perform a weighted summation on the at least two calculated uplink path losses, and use the result as the uplink path loss to be used.

[0153] Furthermore, in some embodiments, the method of this embodiment may also include: the network device sends a first processing rule specifically using one of the above A, B, and C to the terminal device, and accordingly, the terminal device receives the first processing rule sent by the network device; in addition, the terminal device may also determine which first processing rule to use through protocol agreement. Among them, for the first processing rule C, the network device may send the corresponding weighting coefficient (first weighting coefficient), or through protocol agreement, that is, the terminal device receives the first weighting coefficient sent by the network device; or, the first weighting coefficient is determined through protocol agreement, and the first weighting coefficient is used for weighted sum calculation of the at least two uplink path losses. It should be understood that the first processing rule can be agreed through protocol, or can be actively obtained by the terminal device, or the first processing rule can be pre-configured to the terminal device by a network device such as a base station, or the first processing rule can be sent to the terminal device together with the first information by a network device such as a base station, etc.

[0154] For example, the terminal device only supports one antenna port (which may correspond to an antenna panel). If, according to one of the methods in step 202 (including scenarios where the first information is explicit or implicit), it is finally determined that at least two path loss reference signals are obtained, these path loss reference signals can be used to calculate the uplink path loss respectively, and the path loss to be used can be further selected from these uplink path losses according to the first processing rule sent in advance by the network device, or the first processing rule agreed upon by the protocol, such as selecting the minimum or maximum uplink path loss as the uplink path loss to be used, or performing weighted summation of these uplink path losses, and the result obtained is used as the uplink path loss to be used, wherein the weighting coefficient can be sent by the network device, or agreed upon by the protocol, etc. If the uplink path losses M1, M2, and M3 are calculated respectively using these path loss reference signals, the uplink path loss M to be finally used can be calculated by the following formula 1. M=M1*a1+M2*a2+M3*a3 (Formula 1)

[0155] Among them, a1 represents the weighting coefficient corresponding to M1, a2 represents the weighting coefficient corresponding to M2, and a3 represents the weighting coefficient corresponding to M3. The three weighting coefficients a1, a2 and a3 can be issued in advance by the network device or obtained through protocol agreement.

[0156] In some embodiments, the terminal device may support multiple antenna ports. Accordingly, step 203 may specifically include: when at least two path loss reference signals are determined based on the first information, the path loss reference signal corresponding to each antenna port is determined to calculate the uplink path loss based on the fourth association relationship between the path loss reference signal and the antenna port.

[0157] Furthermore, in some embodiments, the method of this embodiment may further include: the network device sending a fourth association relationship between a path loss reference signal and an antenna port to the terminal device; in response, the terminal device receives the fourth association relationship sent by the network device, and can then accurately find the path loss reference signal corresponding to each antenna port to calculate the uplink path loss based on the fourth association relationship between the path loss reference signal and the antenna port; in addition, the terminal device may also determine the fourth association relationship through a protocol agreement, etc. It should be understood that the fourth association relationship may be determined through a protocol agreement, or may be actively obtained by the terminal device, or the fourth association relationship may be pre-configured for the terminal device by a network device such as a base station, or the fourth association relationship may be sent to the terminal device by a network device such as a base station together with the first information, etc.

[0158] In some embodiments, when multiple path loss reference signals are used corresponding to the first antenna port of any terminal device, the uplink path loss is calculated using the multiple path loss reference signals respectively, and one of the following second processing rules (a, b, c) is used to determine the uplink path loss to be used by the first antenna port:

[0159] a. Select the minimum uplink path loss from the multiple calculated uplink path losses as the uplink path loss to be used by the first antenna port; b. Select the maximum uplink path loss from the multiple calculated uplink path losses as the uplink path loss to be used by the first antenna port; c. Perform a weighted summation on the multiple calculated uplink path losses, and use the result as the uplink path loss to be used by the first antenna port.

[0160] Furthermore, in some embodiments, the method of this embodiment may also include: the network device sends a second processing rule to the terminal device, specifically using one of the above a, b, and c, and the terminal device receives the second processing rule sent by the network device accordingly; in addition, the terminal device may also determine which second processing rule to use through a protocol agreement. For the second processing rule c, the network device may send the corresponding weighting coefficient, or through a protocol agreement, etc. It should be understood that the second processing rule may be agreed upon through a protocol, or may be actively obtained by the terminal device, or the second processing rule may be pre-configured to the terminal device by a network device such as a base station, or the second processing rule may be sent to the terminal device together with the first information by a network device such as a base station, etc.

[0161] For example, if a terminal device supports multiple antenna ports (which may correspond to multiple antenna panels), and if multiple path loss reference signals are ultimately determined to be obtained according to one of the methods in step 202, and two determined path loss reference signals corresponding to antenna port X are determined based on a fourth association relationship between the path loss reference signals and the antenna ports, the two path loss reference signals may be used to calculate the uplink path loss, respectively. Furthermore, the uplink path loss to be used by antenna port X may be further selected from the two uplink path losses based on a second processing rule pre-delivered by the network device or a second processing rule agreed upon by a protocol. For example, the minimum or maximum uplink path loss may be selected as the uplink path loss to be used by antenna port X, or the two uplink path losses may be weighted and summed to obtain the result as the uplink path loss to be used by antenna port X. The weighting coefficient (second weighting coefficient) may be delivered by the network device or agreed upon by a protocol. That is, the terminal device receives the second weighting coefficient sent by the network device; or the second weighting coefficient is determined by a protocol agreement, and the second weighting coefficient is used to calculate the weighted sum of the multiple uplink path losses. For example, for antenna port X, the two path loss reference signals are used to calculate the uplink path losses N1 and N2 respectively. The final uplink path loss N required for antenna port X is calculated using the following formula 2: N = N1*b1 + N2*b2 (Formula 2)

[0162] Among them, b1 represents the weighting coefficient corresponding to N1, and b2 represents the weighting coefficient corresponding to N2. The two weighting coefficients b1 and b2 can be issued in advance by the network device or obtained through protocol agreement.

[0163] In some embodiments of the present disclosure, the terminal device and the network device described may be the terminal device 11 and the network device 12 in the aforementioned embodiments.

[0164] This embodiment provides a technical solution for determining the uplink path loss of a terminal device. By applying the technical solution of this embodiment, the path loss can be calculated for the target TRP, thereby achieving uplink power control.

[0165] To illustrate the specific execution process of the terminal device, Figure 3 shows a flow chart of a method for determining path loss according to an embodiment of the present disclosure. Executed on the terminal device side, the method may include the following steps.

[0166] Step 301: Receive first information sent by a network device.

[0167] The first information is used to determine the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0168] In some embodiments, the first information may include at least one of the following:

[0169] DCI; MAC CE, etc.

[0170] In some embodiments, the first information may be explicit or implicit.

[0171] Step 302: Determine a path loss reference signal according to the first information.

[0172] For the scenario where the first information is implicit, in some embodiments, the first information may include DCI. If the DCI includes: SRS resource set indication information (SRI), accordingly, step 302 may specifically include: first determining the first SRS resource set included in the SRS resource set indication information; and then determining the path loss reference signal associated with the first SRS resource set from the first association relationship between the SRS resource set and the path loss reference signal.

[0173] An SRI corresponds to an SRS resource set. Within a specific SRS resource set, a terminal device can use a specific beam to transmit an SRS signal. Therefore, an SRI represents an uplink beam, meaning that the SRI can be used to indicate an uplink beam. This embodiment can determine a corresponding target TRP based on the uplink beam, and then calculate the uplink path loss for the target TRP using the path loss reference signal determined from the first association relationship.

[0174] In some embodiments, the method of this embodiment may further include: the terminal device receives a first association relationship between an SRS resource set and a path loss reference signal sent by a network device; or, determining the first association relationship through a protocol agreement, etc.

[0175] For a scenario where the first information is implicit, in some embodiments, the first information may include DCI, if the DCI includes TCI status information; accordingly, step 202 may specifically include: first determining a first TCI state (TCI state) included in the TCI status information; and then determining a path loss reference signal associated with the first TCI state from a second association relationship between the TCI state and the path loss reference signal.

[0176] 5G New Radio (NR) uses TCI state for beam indication, and TCI state is associated with a specific reference signal, so that the beam of the reference signal associated with it can be represented by a TCI state identifier (ID). When a terminal device receives a TCI state indication, corresponding to downlink reception: in a specific time period, the terminal device believes that the network device uses the beam of the reference signal associated with the TCI state for transmission; corresponding to uplink transmission: in a specific time period, the terminal device uses the receive spatial filter corresponding to the reference signal associated with the TCI state for transmission. In this embodiment, the terminal device can receive the uplink (UL) TCI state sent by the network device. This embodiment can determine the corresponding target TRP based on the beam indicated by the UL TCI state, and then use the downlink reference signal associated with the UL TCI state determined from the second association relationship as the path loss reference signal to calculate the uplink path loss for the target TRP.

[0177] In some embodiments, the method of this embodiment may also include: the terminal device receives a second association relationship between the TCI state and the path loss reference signal sent by the network device; or, determining the second association relationship through protocol agreement, etc.

[0178] For a scenario where the first information is implicit, in some embodiments, the first information may include DCI; accordingly, step 302 may specifically include: first determining the first CORESET where the DCI is located; and then determining the path loss reference signal associated with the first CORESET from a third association relationship between the CORESET and the path loss reference signal.

[0179] The channel that carries DCI is the PDCCH channel, that is, the information transmitted on the PDCCH channel is called DCI. CORESET includes downlink time-frequency resources in a specific area, which is used to carry PDCCH (DCI). In the scenario of multi-DCI M-TRP transmission, one CORESET pool corresponds to one TRP. A CORESET pool corresponds to one TRP, and a TRP generally has multiple beams (that is, corresponding reference signals). CORESET generally corresponds to one beam, which is more targeted. Therefore, this embodiment can determine the corresponding target TRP based on the first CORESET where the DCI is located, and then use the path loss reference signal determined from the third association relationship to calculate the uplink path loss for the target TRP.

[0180] In some embodiments, the method of this embodiment may further include: the terminal device receiving a third association relationship between the CORESET and the path loss reference signal sent by the network device; or determining the third association relationship through a protocol agreement, etc.

[0181] In some embodiments, the DCI may include SRS resource set indication information; or the DCI does not include SRS resource set indication information and the DCI includes TCI status information; or the DCI does not include SRS resource set indication information and the DCI does not include TCI status information.

[0182] For the scenario where the first information is explicit, in some embodiments, the first information may include DCI. Accordingly, step 302 may specifically include: determining a path loss reference signal used by the terminal device to calculate the uplink path loss based on an independent field set in the DCI.

[0183] For the scenario where the first information is explicit, in some embodiments, the first information may include DCI. Accordingly, step 302 may specifically include: determining the path loss reference signal used by the terminal device to calculate the uplink path loss based on the value information of the field in the DCI.

[0184] In a scenario where the first information is explicit, in some embodiments, the first information may include a MAC CE. Accordingly, step 302 may specifically include: determining a path loss reference signal based on a separately configured MAC CE. The separately configured MAC CE is a new type of MAC CE that can indicate to the terminal device a path loss reference signal for calculating the uplink path loss.

[0185] For the scenario where the first information is explicit, in some embodiments, the first information may include a MAC CE. Accordingly, step 302 may specifically include: determining a path loss reference signal used by the terminal device to calculate the uplink path loss based on the reservation status of the field in the MAC CE.

[0186] Step 303: Calculate the uplink path loss based on the determined path loss reference signal.

[0187] For example, within the effective time corresponding to the first information, the terminal device uses the path loss reference signal determined in step 302 to calculate the uplink path loss to obtain the corresponding uplink path loss. Based on the uplink path loss, the terminal device calculates the transmit power of the uplink physical shared channel (PUSCH), the transmit power of the physical uplink control channel (PUCCH), or the transmit power of the sounding reference signal (SRS) through a formula.

[0188] In some embodiments, step 303 may specifically include: when at least two path loss reference signals are determined to be obtained according to the first information, using the at least two path loss reference signals to respectively calculate the uplink path loss, and using one of the following first processing rules (A, B, C) to determine the uplink path loss to be used:

[0189] A. Select the minimum uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used; B. Select the maximum uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used; C. Perform a weighted summation of the at least two calculated uplink path losses, and use the result as the uplink path loss to be used.

[0190] In some embodiments, the method of this embodiment may further include: the terminal device receives a first processing rule sent by the network device and specifically uses one of the above-mentioned A, B, and C; or, determining the first processing rule through a protocol agreement, etc.

[0191] For example, if the terminal device only supports one antenna port (which may correspond to an antenna panel), if at least two path loss reference signals are finally determined to be obtained according to one of the methods in step 302 (including scenarios where the first information is explicit or implicit), the uplink path loss can be calculated using these path loss reference signals respectively, and the path loss to be used can be further selected from these uplink path losses according to a first processing rule sent in advance by the network device or a first processing rule agreed upon by a protocol. For example, the minimum or maximum uplink path loss can be selected as the uplink path loss to be used, or the uplink path losses can be weighted and summed to obtain the result as the uplink path loss to be used, wherein the weighting coefficient can be sent by the network device or agreed upon by a protocol. That is, the first weighting coefficient sent by the network device is received; or the first weighting coefficient is determined by a protocol agreement, and the first weighting coefficient is used for weighted summing calculation of the at least two uplink path losses.

[0192] In some embodiments, the terminal device may support multiple antenna ports. Accordingly, step 303 may specifically include: when at least two path loss reference signals are determined to be obtained based on the first information, the path loss reference signal corresponding to each antenna port is determined to calculate the uplink path loss based on the fourth association relationship between the path loss reference signal and the antenna port.

[0193] In some embodiments, the method of this embodiment may further include: the terminal device receives a fourth association relationship between a path loss reference signal sent by a network device and an antenna port; or, determining the fourth association relationship through a protocol agreement.

[0194] In some embodiments, when multiple path loss reference signals are used corresponding to the first antenna port of any terminal device, the uplink path loss is calculated using the multiple path loss reference signals respectively, and one of the following second processing rules (a, b, c) is used to determine the uplink path loss to be used for the first antenna port:

[0195] a. Select the minimum uplink path loss from the multiple calculated uplink path losses as the uplink path loss to be used by the first antenna port; b. Select the maximum uplink path loss from the multiple calculated uplink path losses as the uplink path loss to be used by the first antenna port; c. Perform a weighted summation on the multiple calculated uplink path losses, and use the result as the uplink path loss to be used by the first antenna port.

[0196] In some embodiments, the method of this embodiment may further include: the terminal device receiving a second processing rule sent by the network device specifically using one of a, b, or c above; or determining the second processing rule through a protocol agreement. The weighting coefficient may be obtained by being sent by the network device or through a protocol agreement. Specifically, the terminal device receives a second weighting coefficient sent by the network device; or determines the second weighting coefficient through a protocol agreement, where the second weighting coefficient is used to perform a weighted summation calculation on the multiple uplink path losses.

[0197] This embodiment provides a technical solution for determining the uplink path loss of a terminal device. By applying the technical solution of this embodiment, the path loss can be calculated for the target TRP, thereby achieving uplink power control.

[0198] Figure 4 shows a flow chart of a method for determining path loss according to an embodiment of the present disclosure. As shown in Figure 4 , the method is applied to a network device and may include the following steps.

[0199] Step 401: The network device sends first information to the terminal device.

[0200] The first information is used to determine a path loss reference signal, and the path loss reference signal is used to calculate the uplink path loss of the terminal device.

[0201] In some embodiments, the first information includes at least one of the following:

[0202] DCI; MAC CE, etc.

[0203] In some embodiments, the DCI may include: SRS resource set indication information. Accordingly, the method of this embodiment may further include: sending a first association relationship between the SRS resource set and the path loss reference signal to the terminal device, where the first association relationship is used to determine the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0204] In some embodiments, the DCI includes TCI status information. Accordingly, the method of this embodiment may further include: sending a second association relationship between the TCI status and a path loss reference signal to the terminal device, where the second association relationship is used to determine a path loss reference signal used by the terminal device to calculate the uplink path loss.

[0205] In some embodiments, the method of this embodiment further includes: sending a third association relationship between the CORESET and the path loss reference signal to the terminal device, where the third association relationship is used to determine the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0206] In some embodiments, the DCI may include SRS resource set indication information; or the DCI does not include SRS resource set indication information and the DCI includes TCI status information; or the DCI does not include SRS resource set indication information and the DCI does not include TCI status information.

[0207] In some embodiments, a separate field in the DCI is used to determine the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0208] In some embodiments, the value information of the field in the DCI is used to determine the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0209] In some embodiments, the separately configured MAC CE is used to determine a path loss reference signal used by the terminal device to calculate the uplink path loss.

[0210] In some embodiments, the reservation status of the field in the MAC CE is used to determine the path loss reference signal used by the terminal device to calculate the uplink path loss.

[0211] In some embodiments, the method of this embodiment also includes: sending a first processing rule to the terminal device, and the first processing rule can be used to calculate the uplink path loss respectively using the at least two path loss reference signals when the terminal device determines to obtain at least two path loss reference signals based on the first information, and determine the uplink path loss to be used therefrom.

[0212] In some embodiments, the method of this embodiment further includes: sending a first weighting coefficient to the terminal device, where the first weighting coefficient is used to perform weighted sum calculation on at least two uplink path losses.

[0213] In some embodiments, the method of this embodiment further includes: sending a fourth association relationship between a path loss reference signal and an antenna port to the terminal device.

[0214] In some embodiments, the method of this embodiment also includes: sending a second processing rule to the terminal device, and the second processing rule is used to calculate the uplink path loss respectively using the multiple path loss reference signals when the first antenna port of any one of the terminal devices corresponds to using multiple path loss reference signals, and determine the uplink path loss that the first antenna port needs to use therefrom.

[0215] In some embodiments, the method of this embodiment further includes: sending a second weighting coefficient to the terminal device, where the second weighting coefficient is used to perform weighted sum calculation on multiple uplink path losses to obtain the uplink path loss required to be used by the first antenna port.

[0216] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 to 3, and will not be repeated here.

[0217] This embodiment provides a technical solution for determining the uplink path loss of a terminal device. By applying the technical solution of this embodiment, the path loss can be calculated for the target TRP, thereby achieving uplink power control.

[0218] In the embodiments provided above, the methods provided in the embodiments of the present disclosure are described from the perspectives of network devices and terminal devices, respectively. To implement the various functions of the methods provided in the embodiments of the present disclosure, the network devices and terminal devices may include hardware structures and software modules, and implement the aforementioned functions in the form of hardware structures, software modules, or hardware structures and software modules. Certain of the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures and software modules.

[0219] Corresponding to the path loss determination methods provided in the above-mentioned embodiments, the present disclosure also provides a path loss determination device. Since the path loss determination device provided in the embodiments of the present disclosure corresponds to the path loss determination methods provided in the above-mentioned embodiments, the implementation method of the path loss determination method is also applicable to the path loss determination device provided in this embodiment and will not be described in detail in this embodiment.

[0220] FIG5 is a schematic structural diagram of a path loss determination device provided in an embodiment of the present disclosure. The path loss determination device can be applied to a terminal device.

[0221] As shown in Figure 5, the device may include: a first communication module 51, configured to receive first information sent by a network device; a determination module 52, configured to determine a path loss reference signal based on the first information; and calculate the uplink path loss based on the determined path loss reference signal.

[0222] In some embodiments, the first information includes at least one of the following:

[0223] DCI; MAC CE.

[0224] In some embodiments, the DCI includes: SRS resource set indication information; a determination module 52, specifically configured to determine a first SRS resource set included in the SRS resource set indication information; and determine a path loss reference signal associated with the first SRS resource set from a first association relationship between the SRS resource set and the path loss reference signal.

[0225] In some embodiments, the determination module 52 is further configured to receive the first association relationship sent by the network device; or determine the first association relationship through a protocol agreement.

[0226] In some embodiments, the DCI includes TCI status information; the determination module 52 is specifically configured to determine a first TCI state included in the TCI status information; and determine a path loss reference signal associated with the first TCI state from a second association relationship between the TCI state and the path loss reference signal.

[0227] In some embodiments, the determination module 52 is further configured to receive the second association relationship sent by the network device; or determine the second association relationship through a protocol agreement.

[0228] In some embodiments, the determination module 52 is specifically configured to determine a first CORESET where the DCI is located; and determine a path loss reference signal associated with the first CORESET from a third association relationship between the CORESET and the path loss reference signal.

[0229] In some embodiments, the determination module 52 is further configured to receive the third association relationship sent by the network device; or determine the third association relationship through a protocol agreement.

[0230] In some embodiments, the determination module 52 is specifically configured to, when the DCI includes SRS resource set indication information, determine the path loss reference signal according to the SRS resource set indication information and the first association relationship between the SRS resource set and the path loss reference signal; when the DCI does not include SRS resource set indication information and the DCI includes TCI status information, determine the path loss reference signal according to the TCI status information and the second association relationship between the TCI status and the path loss reference signal; when the DCI does not include SRS resource set indication information and the DCI does not include TCI status information, determine the path loss reference signal according to the first CORESET in which the DCI is located and the third association relationship between the CORESET and the path loss reference signal.

[0231] In some embodiments, the determination module 52 is specifically configured to determine a path loss reference signal according to an independent field set in the DCI.

[0232] In some embodiments, the determination module 52 is specifically configured to determine a path loss reference signal according to value information of a field in the DCI.

[0233] In some embodiments, the determination module 52 is specifically configured to determine a path loss reference signal according to the separately configured MAC CE.

[0234] In some embodiments, the determination module 52 is specifically configured to determine a path loss reference signal according to a reservation status of a field in the MAC CE.

[0235] In some embodiments, the determination module 52 is specifically configured to, when at least two path loss reference signals are determined based on the first information, calculate the uplink path loss using the at least two path loss reference signals, and determine the uplink path loss to be used using one of the following first processing rules:

[0236] Selecting a minimum uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used;

[0237] Selecting the largest uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used;

[0238] A weighted sum is performed on the at least two calculated uplink path losses, and the obtained sum is used as the uplink path loss to be used.

[0239] In some embodiments, the determination module 52 is further configured to receive the first processing rule sent by the network device; or determine the first processing rule through a protocol agreement.

[0240] In some embodiments, the determination module 52 is further configured to receive a first weighting coefficient sent by the network device; or, determine the first weighting coefficient through a protocol agreement, and the first weighting coefficient is used for weighted sum calculation of the at least two uplink path losses.

[0241] In some embodiments, the determination module 52 is specifically configured to, when at least two path loss reference signals are determined based on the first information, determine the path loss reference signal corresponding to each antenna port to calculate the uplink path loss based on the fourth association relationship between the path loss reference signal and the antenna port.

[0242] In some embodiments, the determination module 52 is further configured to receive the fourth association relationship sent by the network device; or determine the fourth association relationship through a protocol agreement.

[0243] In some embodiments, the determination module 52 is specifically configured to, when multiple path loss reference signals are used corresponding to the first antenna port of any one of the terminal devices, use the multiple path loss reference signals to respectively calculate the uplink path loss, and use one of the following second processing rules to determine the uplink path loss to be used by the first antenna port:

[0244] Selecting a minimum uplink path loss from the calculated multiple uplink path losses as the uplink path loss to be used by the first antenna port;

[0245] Selecting a maximum uplink path loss from the calculated multiple uplink path losses as the uplink path loss to be used by the first antenna port;

[0246] A weighted sum is performed on the multiple calculated uplink path losses, and the obtained result is used as the uplink path loss to be used by the first antenna port.

[0247] In some embodiments, the determination module 52 is further configured to receive the second processing rule sent by the network device; or determine the second processing rule through a protocol agreement.

[0248] In some embodiments, the determination module 52 is further configured to receive a second weighting coefficient sent by the network device; or, determine the second weighting coefficient through a protocol agreement, and the second weighting coefficient is used for weighted summation calculation of the multiple uplink path losses.

[0249] This embodiment provides a technical solution for determining the uplink path loss of a terminal device. By applying the technical solution of this embodiment, the path loss can be calculated for the target TRP, thereby achieving uplink power control.

[0250] FIG6 is a schematic structural diagram of a path loss determination device provided in an embodiment of the present disclosure. The path loss determination device can be used on a network device side.

[0251] As shown in FIG6 , the apparatus may include: a second communication module 61 configured to send first information to a terminal device, where the first information is used to determine a path loss reference signal, and the path loss reference signal is used to calculate an uplink path loss of the terminal device.

[0252] In some embodiments, the second communication module 61 is further configured to send first waveform information to the terminal device, where the first waveform information is communication waveform information supported by the network device; and receive second waveform information sent by the terminal device, where the second waveform information is supportable communication waveform information determined by the terminal device based on the first waveform information.

[0253] In some embodiments, the first information includes at least one of the following:

[0254] DCI; MAC CE.

[0255] In some embodiments, the DCI includes: SRS resource set indication information.

[0256] In some embodiments, the second communication module 61 is further configured to send a first association relationship between the SRS resource set and the path loss reference signal to the terminal device.

[0257] In some embodiments, the DCI includes TCI status information.

[0258] In some embodiments, the second communication module 61 is further configured to send a second association relationship between the TCI state and the path loss reference signal to the terminal device.

[0259] In some embodiments, the second communication module 61 is further configured to send a third association relationship between the CORESET and the path loss reference signal to the terminal device.

[0260] In some embodiments, a separate field in the DCI is used to determine a path loss reference signal.

[0261] In some embodiments, the value information of the field in the DCI is used to determine a path loss reference signal.

[0262] In some embodiments, the separately configured MAC CE is used to determine a path loss reference signal.

[0263] In some embodiments, the reservation status of the field in the MAC CE is used to determine the path loss reference signal.

[0264] In some embodiments, the second communication module 61 is further configured to send a first processing rule to the terminal device, and the first processing rule is used to calculate the uplink path loss respectively using the at least two path loss reference signals when the terminal device determines to obtain at least two path loss reference signals based on the first information, and determine the uplink path loss to be used therefrom.

[0265] In some embodiments, the second communication module 61 is further configured to send a first weighting coefficient to the terminal device, where the first weighting coefficient is used to perform a weighted sum calculation on at least two uplink path losses.

[0266] In some embodiments, the second communication module 61 is further configured to send a fourth association relationship between a path loss reference signal and an antenna port to the terminal device.

[0267] In some embodiments, the second communication module 61 is further configured to send a second processing rule to the terminal device, and the second processing rule is used to calculate the uplink path loss respectively using the multiple path loss reference signals when the first antenna port of any one of the terminal devices corresponds to using multiple path loss reference signals, and determine the uplink path loss that the first antenna port needs to use therefrom.

[0268] In some embodiments, the second communication module 61 is further configured to send a second weighting coefficient to the terminal device, and the second weighting coefficient is used to perform weighted summation calculation on multiple uplink path losses to obtain the uplink path loss required to be used by the first antenna port.

[0269] This embodiment provides a technical solution for determining the uplink path loss of a terminal device. By applying the technical solution of this embodiment, the path loss can be calculated for the target TRP, thereby achieving uplink power control.

[0270] Please refer to Figure 7, which is a schematic diagram of the structure of a communication device 1800 provided in this embodiment. Communication device 1800 can be a network device or a user device, or a chip, chip system, or processor that supports the network device to implement the above method. It can also be a chip, chip system, or processor that supports the user device to implement the above method. This device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0271] The communication device 1800 may include one or more processors 1801. The processor 1801 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0272] Optionally, the communication device 1800 may further include one or more memories 1802, on which a computer program 1804 may be stored. The processor 1801 executes the computer program 1804, causing the communication device 1800 to perform the method described in the above method embodiment. Optionally, the memory 1802 may also store data. The communication device 1800 and the memory 1802 may be provided separately or integrated together.

[0273] Optionally, the communication device 1800 may further include a transceiver 1805 and an antenna 1806. The transceiver 1805 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, and is configured to implement transceiver functions. The transceiver 1805 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, and is configured to implement a transmitting function.

[0274] Optionally, the communication device 1800 may further include one or more interface circuits 1807. The interface circuit 1807 is configured to receive code instructions and transmit the instructions to the processor 1801. The processor 1801 executes the code instructions to enable the communication device 1800 to perform the method described in the above method embodiment.

[0275] In one implementation, processor 1801 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0276] In one implementation, processor 1801 may store a computer program 1803. Computer program 1803, when executed on processor 1801, enables communication device 1800 to perform the method described in the above method embodiment. Computer program 1803 may be embedded in processor 1801, in which case processor 1801 may be implemented by hardware.

[0277] In one implementation, the communication device 1800 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0278] The communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may not be limited to FIG7 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0279] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0280] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0281] (3) ASIC, such as modem;

[0282] (4) Modules that can be embedded in other devices;

[0283] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0284] (6)Others, etc.

[0285] If the communication device can be a chip or a chip system, please refer to the schematic diagram of the chip structure shown in Figure 8. The chip shown in Figure 8 includes a processor 1901 and an interface 1902. The number of processors 1901 can be one or more, and the number of interfaces 1902 can be multiple.

[0286] Optionally, the chip further includes a memory 1903, which is used to store necessary computer programs and data.

[0287] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functionality for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present disclosure.

[0288] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0289] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0290] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks (SSDs)).

[0291] Those skilled in the art will understand that the various numerical numbers such as first and second involved in the present disclosure are only for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0292] The at least one in the present disclosure can also be described as one or more, and the multiple can be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0293] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and / or device (e.g., a magnetic disk, an optical disk, a memory, a programmable logic device (PLD)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0294] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0295] Computer systems may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The client and server relationship arises through computer programs running on the respective computers and having a client-server relationship to each other.

[0296] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions of this disclosure can be achieved. This is not limited herein.

[0297] In addition, it should be understood that the various embodiments described in the present disclosure may be implemented independently or in combination with other embodiments when the solution permits.

[0298] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments applied for herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0299] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0300] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for determining path loss, characterized in that: The method is executed by a terminal device, and includes: receiving first information sent by a network device; determining a path loss reference signal according to the first information; An uplink path loss is calculated based on the path loss reference signal.

2. The method according to claim 1, characterized in that The first information includes at least one of the following: Downlink control information DCI; Media access layer control unit MAC CE.

3. The method according to claim 2, characterized in that The DCI includes: sounding reference signal SRS resource set indication information; The determining, according to the first information, a path loss reference signal includes: Determine a first SRS resource set included in the SRS resource set indication information; From a first association relationship between an SRS resource set and a path loss reference signal, a path loss reference signal associated with the first SRS resource set is determined.

4. The method according to claim 3, characterized in that The method further comprises: receiving the first association relationship sent by the network device; or, The first association relationship is determined through agreement.

5. The method according to claim 2, characterized in that The DCI includes transmission configuration indication TCI status information; The determining, according to the first information, a path loss reference signal includes: Determining a first TCI state included in the TCI state information; Determine a path loss reference signal associated with the first TCI state from a second association relationship between the TCI state and the path loss reference signal.

6. The method according to claim 5, characterized in that The method further comprises: receiving the second association relationship sent by the network device; or, The second association relationship is determined through agreement.

7. The method according to claim 2, characterized in that The determining, according to the first information, a path loss reference signal includes: Determine a first control resource set CORESET where the DCI is located; A path loss reference signal associated with the first CORESET is determined from a third association relationship between the CORESET and the path loss reference signal.

8. The method according to claim 7, characterized in that The method further comprises: receiving the third association relationship sent by the network device; or, The third association relationship is determined through agreement.

9. The method according to claim 2, characterized in that The determining, according to the first information, a path loss reference signal includes: When the DCI includes SRS resource set indication information, determining the path loss reference signal according to the SRS resource set indication information and a first association relationship between the SRS resource set and the path loss reference signal; When the DCI does not include SRS resource set indication information and the DCI includes TCI state information, determining the path loss reference signal according to the TCI state information and a second association relationship between the TCI state and the path loss reference signal; When the DCI does not include SRS resource set indication information and the DCI does not include TCI status information, the path loss reference signal is determined according to the first CORESET in which the DCI is located and the third association relationship between the CORESET and the path loss reference signal.

10. The method according to claim 2, characterized in that The determining, according to the first information, a path loss reference signal includes: A path loss reference signal is determined according to an independent field set in the DCI.

11. The method according to claim 2, characterized in that The determining, according to the first information, a path loss reference signal includes: A path loss reference signal is determined according to value information of the field in the DCI.

12. The method according to claim 2, characterized in that The determining, according to the first information, a path loss reference signal includes: A path loss reference signal is determined according to the separately configured MAC CE.

13. The method according to claim 2, characterized in that The determining, according to the first information, a path loss reference signal includes: A path loss reference signal is determined according to a reservation status of a field in the MAC CE.

14. The method according to any one of claims 1 to 13, characterized in that The calculating the uplink path loss based on the path loss reference signal includes: When at least two path loss reference signals are determined to be obtained according to the first information, uplink path losses are calculated using the at least two path loss reference signals, and uplink path losses to be used are determined using one of the following first processing rules: Selecting a minimum uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used; Selecting the largest uplink path loss from the at least two calculated uplink path losses as the uplink path loss to be used; A weighted sum is performed on the at least two calculated uplink path losses, and the obtained sum is used as the uplink path loss to be used.

15. The method according to claim 14, characterized in that The method further comprises: receiving the first processing rule sent by the network device; or, The first processing rule is determined through protocol agreement.

16. The method according to claim 14, characterized in that The method further comprises: receiving a first weighting coefficient sent by the network device; or, The first weighting coefficient is determined by protocol agreement, and the first weighting coefficient is used for weighted sum calculation of the at least two uplink path losses.

17. The method according to any one of claims 1 to 13, characterized in that The calculating the uplink path loss based on the path loss reference signal includes: When at least two path loss reference signals are determined to be obtained based on the first information, the path loss reference signal corresponding to each antenna port is determined to be used to calculate the uplink path loss based on the fourth association relationship between the path loss reference signal and the antenna port.

18. The method according to claim 17, characterized in that The method further comprises: receiving the fourth association relationship sent by the network device; or, The fourth association relationship is determined through agreement.

19. The method according to any one of claims 17 to 18, characterized in that When a plurality of path loss reference signals are used corresponding to the first antenna port of any one of the terminal devices, the uplink path loss is calculated respectively using the plurality of path loss reference signals, and the uplink path loss to be used by the first antenna port is determined using one of the following second processing rules: Selecting a minimum uplink path loss from the calculated multiple uplink path losses as the uplink path loss to be used by the first antenna port; Selecting a maximum uplink path loss from the calculated multiple uplink path losses as the uplink path loss to be used by the first antenna port; A weighted sum is performed on the multiple calculated uplink path losses, and the obtained result is used as the uplink path loss to be used by the first antenna port.

20. The method according to claim 19, characterized in that The method further comprises: receiving the second processing rule sent by the network device; or, The second processing rule is determined through protocol agreement.

21. The method according to claim 19, wherein The method further comprises: receiving a second weighting coefficient sent by the network device; or, The second weighting coefficient is determined through protocol agreement, and the second weighting coefficient is used for weighted sum calculation of the multiple uplink path losses.

22. A method for determining path loss, characterized in that: Executed by a network device, the method includes: First information is sent to a terminal device, where the first information is used to determine a path loss reference signal, and the path loss reference signal is used to calculate an uplink path loss of the terminal device.

23. The method according to claim 22, characterized in that The first information includes at least one of the following: Downlink control information DCI; Media access layer control unit MAC CE.

24. The method according to claim 23, wherein The DCI includes: sounding reference signal SRS resource set indication information.

25. The method according to claim 24, characterized in that The method further comprises: A first association relationship between an SRS resource set and a path loss reference signal is sent to the terminal device.

26. The method according to claim 23, wherein The DCI includes transmission configuration indication TCI status information.

27. The method according to claim 26, characterized in that The method further comprises: Send a second association relationship between the TCI state and the path loss reference signal to the terminal device.

28. The method according to claim 23, wherein The method further comprises: A third association relationship between the control resource set CORESET and the path loss reference signal is sent to the terminal device.

29. The method according to claim 23, wherein The independent field in the DCI is used to determine the path loss reference signal.

30. The method according to claim 23, wherein The value information of the field in the DCI is used to determine the path loss reference signal.

31. The method according to claim 23, wherein The separately configured MAC CE is used to determine a path loss reference signal.

32. The method according to claim 23, wherein The reservation status of the field in the MAC CE is used to determine the path loss reference signal.

33. The method according to any one of claims 22 to 32, characterized in that The method further comprises: A first processing rule is sent to the terminal device, and the first processing rule is used to calculate the uplink path loss respectively using the at least two path loss reference signals when the terminal device determines to obtain at least two path loss reference signals based on the first information, and determine the uplink path loss to be used therefrom.

34. The method according to claim 33, wherein The method further comprises: A first weighting coefficient is sent to the terminal device, where the first weighting coefficient is used to perform weighted sum calculation on at least two uplink path losses.

35. The method according to any one of claims 22 to 32, characterized in that The method further comprises: A fourth association relationship between a path loss reference signal and an antenna port is sent to the terminal device.

36. The method according to claim 35, characterized in that The method further comprises: A second processing rule is sent to the terminal device, and the second processing rule is used to calculate the uplink path loss respectively using the multiple path loss reference signals when the first antenna port of any one of the terminal devices corresponds to using multiple path loss reference signals, and determine the uplink path loss that the first antenna port needs to use.

37. The method according to claim 36, wherein The method further comprises: A second weighting coefficient is sent to the terminal device, where the second weighting coefficient is used to perform weighted sum calculation on multiple uplink path losses to obtain the uplink path loss required to be used by the first antenna port.

38. A device for determining path loss, characterized in that: Applied to a terminal device, the device includes: A first communication module is configured to receive first information sent by a network device; The determination module is configured to determine a path loss reference signal according to the first information; and calculate the uplink path loss based on the path loss reference signal.

39. A device for determining path loss, characterized in that: Applied to network equipment, the device includes: The second communication module is configured to send first information to the terminal device, where the first information is used to determine a path loss reference signal, and the path loss reference signal is used to calculate the uplink path loss of the terminal device.

40. A communication system, characterized in that: include: Terminal equipment and network equipment; The terminal device performs the method according to any one of claims 1 to 21; The network device executes the method according to any one of claims 22 to 37.

41. A communication device, wherein: include: transceiver; Memory; A processor is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and is capable of implementing the method described in any one of claims 1 to 37.

42. A computer storage medium, wherein: The computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, the method described in any one of claims 1 to 37 can be implemented.

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