Parameter determination method, terminal, first TRP and second TRP

Abstract

The invention provides a parameter determination method, a terminal, a first TRP and a second TRP, and the method comprises the steps: determining a reference point of an uplink parameter for the second TRP; wherein the second TRP supports uplink transmission; determining the offset of the uplink parameter for the second TRP; and determining an uplink parameter based on the reference point and / or the offset. In the present disclosure, the reference point of the uplink parameter can be determined for the second TRP supporting uplink transmission, thereby determining the uplink parameter of the terminal. In an asymmetric scene, the uplink transmission performance is improved, and the performance and availability of asymmetric deployment are improved.

Description

Parameter determination method, terminal, first TRP and second TRP TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication, and in particular to a parameter determination method, a terminal, a first TRP and a second TRP. BACKGROUND

[0002] At present, multiple transmission and reception points (TRPs) are symmetrically deployed, that is, each TRP can be used for downlink (DL) transmission and uplink (UL).

[0003] SUMMARY

[0004] In order to improve the availability of asymmetric deployment in a multi-TRP scenario, embodiments of the present disclosure provide a parameter determination method, a terminal, a first TRP and a second TRP.

[0005] According to a first aspect of embodiments of the present disclosure, a parameter determination method is provided, the method is performed by a terminal, and the method comprises:

[0006] determining a reference point of an uplink parameter for a second transmission and reception point (TRP); wherein the second TRP supports uplink transmission;

[0007] determining an offset of the uplink parameter for the second TRP;

[0008] determining the uplink parameter based on the reference point and / or the offset.

[0009] According to a second aspect of embodiments of the present disclosure, a parameter determination method is provided, the method is performed by a first transmission and reception point (TRP), the first TRP supports uplink transmission and downlink transmission, and the method comprises:

[0010] sending configuration information to a terminal; wherein the configuration information is used to configure a reference point of each uplink parameter of a second TRP to correspond to a same cell, and the second TRP supports uplink transmission.

[0011] According to a third aspect of embodiments of the present disclosure, a parameter determination method is provided, the method is performed by a second transmission and reception point (TRP), the second TRP supports uplink transmission, and the method comprises:

[0012] sending configuration information to a terminal; wherein the configuration information is used to configure a reference point of each uplink parameter of a second TRP to correspond to a same cell, and the second TRP supports uplink transmission.

[0013] According to a fourth aspect of embodiments of the present disclosure, a terminal is provided, comprising:

[0014] a processing module, configured to determine, by a second transmission reception point (TRP), a reference point of an uplink parameter; wherein the second TRP supports uplink transmission;

[0015] the processing module is further configured to determine, by the second TRP, an offset of the uplink parameter;

[0016] the processing module is further configured to determine the uplink parameter based on the reference point and / or the offset.

[0017] According to a fifth aspect of embodiments of the present disclosure, a first transmission reception point (TRP) is provided, the first TRP supporting uplink transmission and downlink transmission, and the first TRP comprising:

[0018] a transceiver, configured to send configuration information to a terminal; wherein the configuration information is used to configure reference points of each uplink parameter of a second TRP to correspond to a same cell, and the second TRP supports uplink transmission.

[0019] According to a sixth aspect of embodiments of the present disclosure, a second transmission reception point (TRP) is provided, the second TRP supporting uplink transmission, and the second TRP comprising:

[0020] a transceiver, configured to send configuration information to a terminal; wherein the configuration information is used to configure reference points of each uplink parameter of a second TRP to correspond to a same cell, and the second TRP supports uplink transmission.

[0021] According to a seventh aspect of embodiments of the present disclosure, a terminal is provided, comprising:

[0022] one or more processors;

[0023] The processor is configured to perform the parameter determination method in any one of the first aspect.

[0024] According to an eighth aspect of embodiments of the present disclosure, a transmission reception point (TRP) is provided, comprising:

[0025] one or more processors;

[0026] The processor is configured to perform the parameter determination method in any one of the second aspect or the third aspect.

[0027] According to a ninth aspect of embodiments of the present disclosure, a communication system is provided, comprising:

[0028] a terminal, configured to implement the parameter determination method in any one of the first aspect;

[0029] a first transmission reception point (TRP) supporting uplink transmission and downlink transmission, the first TRP being configured to implement the parameter determination method of the second aspect;

[0030] a second TRP supporting uplink transmission, the second TRP being configured to implement the parameter determination method of the third aspect.

[0031] According to a tenth aspect of the embodiments of the present disclosure, a storage medium is provided, the storage medium storing instructions, when the instructions are executed on an electronic device, causing the electronic device to perform the parameter determination method in any one of the first aspect, the second aspect, or the third aspect.

[0032] According to an eleventh aspect of the embodiments of the present disclosure, a computer program product is provided, comprising a computer program, when the computer program is executed by a processor, being used to implement the parameter determination method in any one of the first aspect, the second aspect, or the third aspect.

[0033] In the embodiments of the present disclosure, the reference point for determining the uplink parameter of the second TRP supporting uplink transmission can be determined, so as to determine the uplink parameter of the terminal. In the asymmetric scenario, the uplink transmission performance is improved, and the performance and availability of the asymmetric deployment are improved.

[0034] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the specification.

[0036] FIG. 1A is one exemplary schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0037] FIG. 1B is one exemplary schematic diagram of synchronization of a first TRP and a second TRP according to an embodiment of the present disclosure.

[0038] FIG. 2 is one exemplary interaction schematic diagram of a parameter determination method according to an embodiment of the present disclosure.

[0039] FIG. 3A is one exemplary flow schematic diagram of a parameter determination method according to an embodiment of the present disclosure.

[0040] FIG. 3B is another exemplary flow schematic diagram of a parameter determination method according to an embodiment of the present disclosure.

[0041] FIG. 3C is a third exemplary flow schematic diagram of a parameter determination method according to an embodiment of the present disclosure.

[0042] FIG. 4A is one of schematic diagrams of an example scenario of determining a reference point, according to embodiments of the present disclosure.

[0043] FIG. 4B is another of schematic diagrams of an example scenario of determining a reference point, according to embodiments of the present disclosure.

[0044] FIG. 4C is a third of schematic diagrams of an example scenario of determining a reference point, according to embodiments of the present disclosure.

[0045] FIG. 4D is a fourth of schematic diagrams of an example scenario of determining a reference point, according to embodiments of the present disclosure.

[0046] FIG. 5A is one of schematic diagrams of a terminal, according to embodiments of the present disclosure.

[0047] FIG. 5B is one of schematic diagrams of a first transmission reception point (TRP), according to embodiments of the present disclosure.

[0048] FIG. 5C is one of schematic diagrams of a second TRP, according to embodiments of the present disclosure.

[0049] FIG. 6A is one of schematic diagrams of an example interaction of a communication device, according to embodiments of the present disclosure.

[0050] FIG. 6B is one of schematic diagrams of an example interaction of a chip, according to embodiments of the present disclosure. DETAILED DESCRIPTION

[0051] The example embodiments will be described in detail herein with reference to the attached drawings. In the following description, same numbers refer to same elements in all figures. The following detailed description includes specific details for the purpose of providing an understanding of certain embodiments of the application. However, it will be apparent to those skilled in the art that the application can be practiced without these specific details. In some instances, well-known structures and functions have not been described in detail to avoid obscuring the understanding of this description.

[0052] Embodiments of the present disclosure provide a parameter determination method, a terminal, a first transmission reception point (TRP) and a second TRP.

[0053] In a first aspect, embodiments of the present disclosure provide a parameter determination method. The method is performed by a terminal. The method comprises: determining a reference point of an uplink parameter for a second TRP; wherein the second TRP supports uplink transmission; determining an offset of the uplink parameter for the second TRP; and determining the uplink parameter based on the reference point and / or the offset.

[0054] In the above embodiments, the terminal can determine a reference point of an uplink parameter and an offset of the uplink parameter for a second TRP supporting uplink transmission, and determine the uplink parameter based on the reference point and / or the offset, thereby improving uplink transmission performance in an asymmetric scenario and improving performance and availability of asymmetric deployment.

[0055] In some embodiments of the first aspect, in some embodiments, the uplink parameter is uplink timing, and the reference point is a reference downlink timing; and / or the uplink parameter is uplink transmission power, and the reference point is a reference downlink path loss.

[0056] In the above embodiments, the uplink parameter can be uplink timing, and the reference point can be a reference downlink timing, and / or the uplink parameter can be uplink transmission power, and the reference point can be a reference downlink path loss, thereby improving reliability of uplink transmission.

[0057] In some embodiments of the first aspect, in some embodiments, the determining the reference point of the uplink parameter for the second transmission reception point (TRP) includes any of the following: not supporting carrier aggregation, supporting a single timing advance (TA) or multiple TAs, determining a reference downlink timing based on a first downlink timing; supporting carrier aggregation, supporting a single TA, and the second TRP being located in a primary timing advance group (pTAG), determining a reference downlink timing based on a first downlink timing; wherein the first downlink timing is a downlink timing corresponding to a first TRP in a first cell, and the first TRP supports uplink transmission and downlink transmission.

[0058] In the above embodiments, the reference downlink timing can be determined based on a first downlink timing corresponding to a first TRP in a first cell supporting uplink and downlink transmission, thereby improving reliability of determining uplink timing and performance of uplink transmission.

[0059] In some embodiments of the first aspect, in some embodiments, the method further includes: not supporting carrier aggregation, supporting multiple TAs, and determining that a number of reference points corresponding to the first TRP and the second TRP is 1 or 2.

[0060] In the above embodiments, in the case of not supporting carrier aggregation and supporting multiple TAs, the first TRP and the second TRP can correspond to the same reference point, or the two TRPs correspond to one reference point respectively, thereby improving reliability of the determined reference point and availability in an asymmetric scenario.

[0061] In some embodiments of the first aspect, in some embodiments, the reference point for determining the uplink parameter for the second transmission and reception point (TRP) comprises any one of: not supporting carrier aggregation, supporting a single timing advance (TA) or multiple TAs, determining a reference downlink path loss based on a first transmission configuration indicator (TCI) state; supporting carrier aggregation, supporting a single TA, and the second TRP being located in a primary timing advance group (pTAG), determining a reference downlink path loss based on the first TCI state; wherein the first TCI state is a downlink TCI state used by a first TRP in the first cell or any activated TCI state; and wherein the first TRP supports uplink transmission and downlink transmission.

[0062] In the above embodiments, the reference downlink path loss can be determined based on a first TCI state corresponding to a first TRP in the first cell that supports uplink transmission and downlink transmission, thereby improving the reliability of determining the uplink transmission power and improving the performance of the uplink transmission.

[0063] In some embodiments of the first aspect, in some embodiments, the first cell is a primary cell.

[0064] In the above embodiments, the first cell can be a primary cell, thereby improving the reliability of the determined uplink parameter in an asymmetric scenario.

[0065] In some embodiments of the first aspect, in some embodiments, the reference point for determining the uplink parameter for the second TRP comprises: supporting carrier aggregation, supporting a single TA, and the second TRP being located in a secondary timing advance group (sTAG), determining a reference downlink timing based on a second downlink timing; wherein the second downlink timing is a downlink timing corresponding to a first TRP in a second cell, and the first TRP supports uplink transmission and downlink transmission.

[0066] In the above embodiments, in the case that the terminal supports CA, supports a single TA, and the second TRP is located in the sTAG, the second downlink timing corresponding to the first TRP in the second cell can be used as the reference downlink timing, thereby improving the reliability of determining the uplink timing and improving the performance of the uplink transmission.

[0067] In some embodiments of the first aspect, in some embodiments, the reference point for determining the uplink parameter for the second TRP comprises: supporting carrier aggregation, supporting a single TA, and the second TRP being located in a secondary timing advance group (sTAG), determining a reference downlink path loss based on a second transmission configuration indicator (TCI) state; wherein the second TCI state is an activated downlink TCI state or a used downlink TCI state of a first TRP in a second cell.

[0068] In the above embodiments, in a case where the terminal supports CA, supports a single TA, and the second TRP is located in the sTAG, the reference downlink path loss can be determined based on the second TCI state corresponding to the first TRP in the second cell, the reliability of determining the uplink transmission power is improved, and the performance of uplink transmission is improved.

[0069] In some embodiments of the first aspect, in some embodiments, the second cell is any one of the following: a secondary cell in which the second TRP is located; any activated secondary cell in the same sTAG as the second TRP.

[0070] In the above embodiments, the second cell can be any of the above, which is simple and easy to use.

[0071] In some embodiments of the first aspect, in some embodiments, the reference point for determining the uplink parameter for the second transmission and reception point (TRP) comprises: supporting carrier aggregation and supporting multiple TAs, the second TRP and the primary cell being located in different TAGs, and determining the reference downlink timing based on the third downlink timing; wherein the third downlink timing is the downlink timing corresponding to the first TRP in the third cell, and the first TRP supports uplink transmission and downlink transmission.

[0072] In the above embodiments, in a case where the terminal supports CA and supports multiple TAs, and the second TRP and the primary cell are located in different TAGs, the terminal can determine the reference downlink timing based on the third downlink timing corresponding to the first TRP in the third cell, which improves the reliability of determining the uplink timing and improves the performance of uplink transmission.

[0073] In some embodiments of the first aspect, in some embodiments, the reference point for determining the uplink parameter for the second transmission and reception point (TRP) comprises: supporting carrier aggregation and supporting multiple TAs, the second TRP and the primary cell being located in different TAGs, and determining the reference downlink path loss based on the third TCI state; wherein the third TCI state is an activated downlink TCI state or a used downlink TCI state of the first TRP in the third cell.

[0074] In the above embodiments, in a case where the terminal supports CA and supports multiple TAs, and the second TRP and the primary cell are located in different TAGs, the terminal can determine the reference downlink path loss based on the third TCI state corresponding to the first TRP in the third cell, which improves the reliability of determining the uplink transmission power and improves the performance of uplink transmission.

[0075] In some embodiments of the first aspect, in some embodiments, the third cell is any one of the following: a primary cell in which the second TRP is located; any cell in the same TAG as the second TRP.

[0076] In the above embodiments, the third cell can be any of the above cells, and implementation is simple and highly available.

[0077] In some embodiments of the first aspect, the method further includes any of the following: determining, based on configuration information sent by the first TRP or the second TRP, that the reference points of the uplink parameters of the second TRP correspond to a same cell; wherein the first TRP supports uplink transmission and downlink transmission; selecting a same cell for the reference points of the uplink parameters of the second TRP; and determining that the reference points of the uplink parameters of the second TRP belong to a first quasi co-location type.

[0078] In the above embodiments, the terminal can determine that the reference points of the uplink parameters of the second TRP correspond to a same cell or belong to a first quasi co-location type in any of the above manners, thereby improving the reliability of the determined uplink parameters for the second TRP supporting uplink transmission.

[0079] In a second aspect, the embodiments of the present disclosure provide a parameter determination method, which is performed by a first transmission and reception point (TRP), the first TRP supporting uplink transmission and downlink transmission, and includes: sending configuration information to a terminal; wherein the configuration information is used to configure reference points of uplink parameters of a second TRP, the second TRP supporting uplink transmission.

[0080] In the above embodiments, the reliability of the determined uplink parameters for the second TRP supporting uplink transmission is improved.

[0081] In some embodiments of the second aspect, the uplink parameters include uplink timing and uplink transmission power.

[0082] In a third aspect, the embodiments of the present disclosure provide a parameter determination method, which is performed by a second TRP, the second TRP supporting uplink transmission, and includes: sending configuration information to a terminal; wherein the configuration information is used to configure reference points of uplink parameters of a second TRP, the second TRP supporting uplink transmission.

[0083] In the above embodiments, the reliability of the determined uplink parameters for the second TRP supporting uplink transmission is improved.

[0084] In some embodiments of the third aspect, the uplink parameters include uplink timing and uplink transmission power.

[0085] In a fourth aspect, an embodiment of the present disclosure provides a terminal, comprising: a processing module configured to determine, by a second transmission reception point (TRP), a reference point of an uplink parameter; wherein the second TRP supports uplink transmission; the processing module is further configured to determine, by the second TRP, an offset of the uplink parameter; and the processing module is further configured to determine the uplink parameter based on the reference point and / or the offset.

[0086] In a fifth aspect, an embodiment of the present disclosure provides a first transmission reception point (TRP) supporting uplink transmission and downlink transmission, comprising: a transceiver configured to send configuration information to a terminal; wherein the configuration information is used to configure a reference point of each uplink parameter of a second TRP to correspond to a same cell, and the second TRP supports uplink transmission.

[0087] In a sixth aspect, an embodiment of the present disclosure provides a second transmission reception point (TRP) supporting uplink transmission, comprising: a transceiver configured to send configuration information to a terminal; wherein the configuration information is used to configure a reference point of each uplink parameter of a second TRP to correspond to a same cell, and the second TRP supports uplink transmission.

[0088] In a seventh aspect, an embodiment of the present disclosure provides a terminal, comprising: one or more processors; wherein the processor is configured to execute the method in any one of the first aspect.

[0089] In an eighth aspect, an embodiment of the present disclosure provides a transmission reception point, comprising: one or more processors; wherein the processor is configured to execute the method in any one of the second aspect or the third aspect.

[0090] In a ninth aspect, an embodiment of the present disclosure provides a communication system, comprising: a terminal configured to implement the method in any one of the first aspect; a first transmission reception point (TRP) supporting uplink transmission and downlink transmission, the first TRP is configured to implement the method in the second aspect; and a second TRP supporting uplink transmission, the second TRP is configured to implement the method in the third aspect.

[0091] In a tenth aspect, an embodiment of the present disclosure provides a storage medium storing instructions, when the instructions are executed on an electronic device, the electronic device is caused to execute the method in any one of the first aspect, the second aspect or the third aspect.

[0092] In an eleventh aspect, an embodiment of the present disclosure provides a computer program product, comprising a computer program configured to implement the method in any one of the first aspect, the second aspect or the third aspect when executed by a processor.

[0093] In a twelfth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described according to optional implementations of the first, second, or third aspects above.

[0094] It is understood that the aforementioned terminal, first TRP, second TRP, communication system, storage medium, computer program product, chip, or chip system are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0095] This disclosure provides the invention title. In some embodiments, the terms "parameter determination method" and "communication method," "method for determining a reference point," etc., can be used interchangeably; the terms "parameter determination device" and "communication device," "device for determining a reference point," etc., can be used interchangeably; and the terms "communication system," "parameter determination system," etc., can be used interchangeably.

[0096] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular 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 particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0097] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0098] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0099] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0100] In the embodiments of the present disclosure, "multiple" refers to two or more.

[0101] In some embodiments, the terms "at least one of", "one or more of", "a plurality of", "multiple", and the like can be replaced with each other.

[0102] In some embodiments, the description modes such as "at least one of A, B", "A and / or B", "A in one case and B in another case", "in response to a case A, in response to a case B", and the like can include the following technical solutions according to the case: A is executed in some embodiments (A is executed regardless of B); B is executed in some embodiments (B is executed regardless of A); A and B are selectively executed in some embodiments (A and B are selected to be executed); A and B are executed in some embodiments (A and B are both executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0103] In some embodiments, the description modes such as "A or B" and the like can include the following technical solutions according to the case: A is executed in some embodiments (A is executed regardless of B); B is executed in some embodiments (B is executed regardless of A); A and B are selectively executed in some embodiments (A and B are selected to be executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0104] The prefix words "first", "second", and the like in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute a limitation on the position, order, priority, quantity, or content of the description objects. The description of the description objects should be referred to the description in the context of the claims or embodiments, and should not be limited by the prefix words. For example, the description objects are "fields", and the ordinal words before "fields" in "first field" and "second field" do not limit the position or order between "fields". "First" and "second" do not limit whether the "fields" modified thereby are in the same message, nor do they limit the order of "first field" and "second field". For another example, the description objects are "levels", and the ordinal words before "levels" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description objects is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "devices" can be one or more. In addition, the objects modified by different prefix words can be the same or different. For example, the description objects are "devices", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different. For another example, the description objects are "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0105] In some embodiments, "comprising A", "including A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0106] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0107] In some embodiments, the terms "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 lower than", "above", and the like can be replaced with each other, and the terms "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", "below", and the like can be replaced with each other.

[0108] In some embodiments, the device and the like can be interpreted as physical or virtual, and the name is not limited to the name recorded in the embodiments. The terms "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0109] 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" and the like can be used interchangeably.

[0110] In some embodiments, a terminal can be replaced by an access network device, a core network device, or a network device. In this case, it can also be configured as a structure having all or part of the functions of the terminal.

[0111] In some embodiments, data, information, and the like can be acquired in compliance with laws and regulations of the country where the terminal is located.

[0112] In some embodiments, data, information, and the like can be acquired after obtaining the consent of the user.

[0113] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0114] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0115] As shown in FIG. 1A, the communication system 100 includes a terminal 101, a first TRP 102, and a second TRP 103.

[0116] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a tablet (Pad), a wireless transceiver-equipped computer, a virtual reality (VR) terminal device, an augmented reality (AR) terminal 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, and the like, but is not limited thereto.

[0117] In some embodiments, the first TRP 102 can support both uplink transmission and downlink transmission.

[0118] In some embodiments, the name of the first TRP 102 is not limited and can be interchangeable with an anchor TRP, a reference TRP, and the like.

[0119] In which, the first TRP 102 can provide the terminal 101 with downlink reference signals, downlink control channels, and downlink data transmission.

[0120] In some embodiments, the second TRP 103 can support uplink transmission.

[0121] In one example, the second TRP 103 can only support uplink transmission.

[0122] For example, the second TRP 103 supports both uplink transmission and downlink transmission, but can turn off the supported downlink transmission function, thereby only supporting uplink transmission.

[0123] For example, the second TRP 103 supports both uplink transmission and downlink transmission at the time of deployment, in order to improve the performance of uplink transmission and reduce the interference of downlink transmission on uplink transmission, the downlink transmission function can be turned off, thereby only supporting uplink transmission.

[0124] For another example, after the second TRP 103 turns off the downlink transmission function, if there is a situation of cell congestion or downlink scheduling resource shortage, the downlink transmission function of the second TRP 103 can be turned on at this time, and the second TRP 103 can support both uplink transmission and downlink transmission.

[0125] Exemplarily, the second TRP 103 can be deployed with no support for downlink transmission, only uplink transmission functionality in the deployment phase.

[0126] In some embodiments, the name of the second TRP 103 is not limited and can be interchangeably used with uplink-only TRP (UL-only TRP), uplink TRP.

[0127] In some embodiments, the terminal 101 can perform uplink data transmission to the first TRP 102 and / or the second TRP 103.

[0128] In some embodiments, the main motivation of the asymmetric deployment is to improve UL throughput by having the terminal 101 transmit UL data to the second TRP 103.

[0129] For example, the first TRP 102 in FIG. 1A provides coverage for DL and UL transmission, and the second TRP 103 is deployed to improve UL performance. Other motivations are to reduce network energy consumption by avoiding transmitting downlink data from the second TRP 103. It can be envisaged that a terminal in the cell can first perform initial access through the first TRP 102, and then, if the terminal 101 is closer to the second TRP 103 than the first TRP 102 (i.e. the terminal 101 has better UL link budget at this time), or if the network side decides to move the terminal 101 to the second TRP 103, for example, to reduce UL interference of the first TRP 102, or to improve resource usage efficiency, the network side can instruct the terminal 101 to transmit to the second TRP 103.

[0130] Currently, power control needs to be enhanced to support asymmetric deployment. In multi-TRP operation, it is assumed that each TRP can be used for DL transmission and UL reception. Uplink power control can be based on path loss measurement from a path loss-reference signal (PL-RS) of the same TRP that provides DL service. However, when the uplink transmission power corresponding to the second TRP 103 is based on path loss measurement from a DL PL-RS of the first TRP 102, the path losses of uplink and downlink are different.

[0131] In addition to the power control aspect, another important aspect is how to set the UL transmission timing to the first TRP 102 and the second TRP 103, respectively. In a practical deployment, the first TRP 102 and the second TRP 103 are not co-located, and the propagation delay difference and synchronization timing error between the two can be very large, which will affect the performance of asymmetric TRP deployment.

[0132] In some embodiments, the timing corresponding to:

[0133] Since the only UL TRP (second TRP) does not transmit any Synchronization Signal / PBCH Block (SSB), the terminal 101 can rely on the SSB of the anchor TRP (first TRP) to determine the DL reference timing. When the slot boundaries of the anchor TRP and the only UL TRP are perfectly aligned (i.e. the synchronization error is 0 microsecond, µs), the terminal 101 can use the DL reference timing of the anchor TRP for the random access procedure and receive the Timing Advance (TA) command, managing the asymmetric propagation delay between the anchor TRP to the terminal 101 and the only UL TRP to the terminal 101.

[0134] However, in a real deployment (e.g. under asymmetric deployment), it can not always be feasible to maintain perfect synchronization between different TRPs (even for intra-DU deployment, as many network deployments use switched fronthaul). For example, FIG. IB illustrates a synchronization scenario where the timing of the only UL TRP is ahead of the anchor TRP. When the slot timing of the only UL TRP is ahead of the anchor TRP, if the terminal acquires the DL timing from the anchor TRP and uses the same DL reference timing to transmit the Physical Uplink Shared Channel (PUSCH), it can cause inter-slot interference at the only UL TRP.

[0135] To determine the reference point of the uplink parameters for the second TRP supporting uplink transmission, improve the uplink transmission performance, the present disclosure provides a parameter determination method, a terminal, a first TRP and a second TRP.

[0136] FIG. 2 is an interaction schematic diagram of a parameter determination method according to an embodiment of the present disclosure. As shown in FIG. 2, the present embodiment relates to a parameter determination method, and the method comprises:

[0137] In step S2101a, the first TRP 102 sends configuration information to the terminal 101.

[0138] In some embodiments, the terminal 101 receives the configuration information.

[0139] In some embodiments, the configuration information is used to configure the reference points of the uplink parameters of the second TRP 102 to correspond to the same cell.

[0140] In some embodiments, the plurality of uplink parameters can include uplink timing and uplink transmission power.

[0141] In some embodiments, the reference point of the uplink timing can be a reference downlink timing.

[0142] In some embodiments, the reference point of the uplink transmission power can be a reference downlink path loss.

[0143] The reference point of each uplink parameter corresponding to the same cell can be understood as determining the reference downlink timing and the reference downlink path loss based on the first TRP 102 of the same cell.

[0144] In some embodiments, the first TRP 102 supports uplink transmission and downlink transmission.

[0145] In some embodiments, the name of the first TRP is not limited and can be interchangeable with an anchor TRP, a reference TRP, and the like.

[0146] In some embodiments, the second TRP 103 supports uplink transmission.

[0147] In some embodiments, the name of the second TRP is not limited and can be interchangeable with a Uplink-Only TRP, an uplink TRP, and the like.

[0148] In step S2101b, the second TRP 103 sends configuration information to the terminal 101.

[0149] In some embodiments, the terminal 101 receives the configuration information.

[0150] In some embodiments, the configuration information is used to configure the same reference point for multiple uplink parameters of the second TRP.

[0151] In some embodiments, the second TRP 103 supports uplink transmission.

[0152] In some embodiments, the name of the second TRP is not limited and can be interchangeable with a Uplink-Only TRP, an uplink TRP, and the like.

[0153] In some embodiments, the second TRP 103 does not support sending a downlink data channel and can support sending a downlink control channel.

[0154] In some embodiments, steps S2101a and S2101b can be executed alternatively or both, of course, neither can be executed, and the present disclosure does not limit this.

[0155] In step S2102, the terminal 101 determines the reference point of the uplink parameter for the second TRP.

[0156] In some embodiments, the uplink parameter can include but is not limited to at least one of the following: uplink timing; uplink transmission power.

[0157] In some embodiments, the terminal 101 can determine the reference point of the uplink timing, which is the reference downlink timing.

[0158] In some embodiments, the terminal 101 can determine the reference point of the uplink transmission power, which is the reference downlink path loss.

[0159] In some embodiments, the terminal 101 can determine that the reference points of the uplink parameters of the second TRP 103 correspond to the same cell based on the configuration information sent by the first TRP 102 or the second TRP 103.

[0160] In some embodiments, the terminal 101 can select the same cell as the reference point of the uplink parameters of the second TRP 103.

[0161] In some embodiments, the terminal 101 can determine that the uplink parameters of the second TRP 103 belong to a first quasi co-located (QCL) type.

[0162] The first QCL type can be used to indicate the relevant parameters of the receiving beam.

[0163] For example, the first QCL type can be QCL-type D, which allows sharing of spatial relationship parameters between signals.

[0164] In some embodiments, the terminal 101 can determine the reference points of the uplink references in different scenarios.

[0165] Scenario 1: the terminal 101 does not support carrier aggregation (CA).

[0166] Scenario 1-1: the terminal 101 supports a single timing advance (TA), for example, 1 TA.

[0167] For example, the terminal 101 supporting 1 TA means that the terminal 101 will only determine one TA regardless of the first TRP 102 or the second TRP 103.

[0168] For example, as shown in FIG. 4A, the first TRP 102 and the second TRP 103 are in the same timing advance group (TAG), and since CA is not supported, the TAG is the primary timing advance group (pTAG).

[0169] For example, the terminal 101 can determine the reference downlink timing based on the first downlink timing.

[0170] The first downlink timing is the downlink timing corresponding to the first TRP in the first cell, where the first cell is the primary cell.

[0171] The transmission of the uplink frame occurs at (N TA +N TA offset) x T c At the time point, which is before the first detected path (in time) of receiving a corresponding downlink frame from the reference cell, the terminal 101 can take the downlink timing corresponding to the first TRP 102 of the primary cell as the reference downlink timing of the second TRP 103.

[0172] wherein N TA refers to TA, N TA offset refers to the offset corresponding to TA, T c The value of T

[0173] wherein N TA may be configured by the network side for the first TRP 102 and the second TRP 103. TA That is, the first TRP 102 and the second TRP 103 can both determine the reference downlink timing based on N

[0174] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the first TCI state.

[0175] wherein the first TCI state is the downlink TCI state used by the first TRP 102 in the first cell (i.e., the primary cell) or any activated TCI state.

[0176] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the TCI state currently used by the physical downlink shared channel (PDSCH) of the first TRP 102 in the primary cell.

[0177] Exemplarily, the terminal 101 can determine the reference downlink path loss based on any activated TCI state of the first TRP 102 in the primary cell.

[0178] wherein in scenario 1-2, the terminal 101 supports multiple TA, for example, supports 2 TA.

[0179] Exemplarily, the terminal 101 supporting 2 TA can mean that the terminal 101 supports determining a corresponding TA respectively for the first TRP 102 and the second TRP 103.

[0180] It can be understood that at this time, the first TRP 102 and the second TRP 103 can be far apart in geographical position, because the same TA cannot be used.

[0181] Exemplarily, the number of reference points corresponding to the first TRP 102 and the second TRP 103 is 1.

[0182] That is, the first TRP 102 and the second TRP 103 can correspond to the same reference downlink timing.

[0183] Exemplarily, the number of reference points corresponding to the first TRP 102 and the second TRP 103 can be 2.

[0184] Namely, the first TRP 102 and the second TRP 102 can correspond to one reference downlink timing respectively.

[0185] It can be understood that, since CA is not supported, only one primary cell and one TRP supporting downlink transmission, namely the first TRP 102, exist at this time, and in actual application, only one reference downlink timing is determined for the first TRP 102 and the second TRP 103.

[0186] Exemplarily, the transmission of the uplink frame occurs at (N TA +N TA offset )×T c , which is before the first detected path (in time) of the corresponding downlink frame received from the reference cell, the terminal 101 can take the downlink timing corresponding to the first TRP 102 of the primary cell as the reference downlink timing of the second TRP 103.

[0187] Wherein, N TA refers to TA, N TA offset refers to the offset corresponding to TA, and T c can be 0.509 ns.

[0188] Wherein, N TA can be configured by the network side for each TAG separately.

[0189] Wherein, the first TCI state is the downlink TCI state used by the first TRP 102 in the first cell (namely, the primary cell) or any activated TCI state.

[0190] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the TCI state currently used by the PDSCH of the first TRP 102 in the primary cell.

[0191] Exemplarily, the terminal 101 can determine the reference downlink path loss based on any activated TCI state of the first TRP 102 in the primary cell.

[0192] Scenario 2, supporting CA.

[0193] Wherein, scenario 2-1, the terminal 101 supports a single TA.

[0194] Case 1, the second TRP 103 is located in the pTAG.

[0195] Exemplarily, the terminal 101 can determine the reference downlink timing based on the first downlink timing.

[0196] wherein the first downlink timing is a downlink timing corresponding to the first TRP in the first cell, and the first cell is the primary cell since the second TRP 103 is located in the pTAG.

[0197] wherein the transmission of the uplink frame occurs at (N TA +N TA offset )×T c , which is before the first detected path (in time) of the corresponding downlink frame from the reference cell, the terminal 101 can determine the reference downlink timing based on a downlink timing corresponding to the first TRP 102 of the primary cell as the reference downlink timing of the second TRP 103.

[0198] wherein N TA is a TA, N TA offset is an offset corresponding to the TA, and T c can be 0.509 ns.

[0199] wherein N TA can be configured by the network side for the first TRP 102 and the second TRP 103, that is, the first TRP 102 and the second TRP 103 can both determine the reference downlink timing based on N TA .

[0200] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the first TCI state.

[0201] wherein the first TCI state is a downlink TCI state used by the first TRP 102 in the first cell (i.e., the primary cell) or any activated TCI state.

[0202] Exemplarily, the terminal 101 can determine the reference downlink path loss based on a TCI state currently used by a physical downlink shared channel (PDSCH) of the first TRP 102 in the primary cell.

[0203] Exemplarily, the terminal 101 can determine the reference downlink path loss based on any activated TCI state of the first TRP 102 in the primary cell.

[0204] Case 2, the second TRP 103 is located in a secondary timing advance group (sTAG).

[0205] Exemplarily, the terminal 101 can determine the reference downlink timing based on the second downlink timing.

[0206] wherein the second downlink timing is a downlink timing corresponding to the first TRP in the second cell.

[0207] The second cell can be any one of the following:

[0208] The secondary cell where the second TRP 103 is located;

[0209] Any activated secondary cell within the same sTAG as the second TRP 103.

[0210] For example, the terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in the secondary cell where the second TRP 103 is located. For example, in FIG. 4B, the second TRP 103 is located in the secondary cell #1, and the terminal 101 determines the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in the secondary cell #1.

[0211] For example, the terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in any activated secondary cell within the same sTAG as the second TRP 103. For example, in FIG. 4B, the second TRP 103 is located in the secondary cell #1, the second TRP 103 is within the same sTAG as the secondary cell #2 and the secondary cell #3, and the secondary cell #3 is in an activated state. The terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in the secondary cell #3.

[0212] Where the transmission of the uplink frame occurs at (N TA +N TA offset )T c , which is before the first detected path (in time) of the corresponding downlink frame received from the reference cell, the terminal 101 can determine the reference downlink timing of the second TRP 103 based on the downlink timing corresponding to the first TRP 102 of the primary cell.

[0213] Where N TA is the TA, N TA offset is the offset corresponding to the TA, and T c can be 0.509ns.

[0214] Where N TA may be configured by the network side for all activated secondary cells and the second TRP 103.

[0215] For example, the terminal 101 can determine the reference downlink path loss based on the second TCI state.

[0216] Where the second TCI state is the activated or used downlink TCI state of the first TRP 102 in the second cell.

[0217] The second cell can be any one of the following:

[0218] a secondary cell where the second TRP 103 is located;

[0219] any activated secondary cell within a same sTAG as the second TRP 103.

[0220] Exemplarily, the terminal 101 can determine the reference downlink pathloss based on any activated TCI state of the PDSCH of the first TRP 102 in the second cell.

[0221] Exemplarily, the terminal 101 can determine the reference downlink pathloss based on the currently used activated TCI state of the PDSCH of the first TRP 102 in the second cell.

[0222] wherein, for scenario 2-2, the terminal 101 supports multiple TAs, e.g., supports 2 TAs.

[0223] Exemplarily, the terminal 101 can determine the reference downlink timing based on a third downlink timing.

[0224] wherein, the third downlink timing is a downlink timing corresponding to the first TRP 102 in a third cell.

[0225] wherein, the third cell is any of the following:

[0226] a primary cell where the second TRP is located;

[0227] any cell within a same TAG as the second TRP.

[0228] Exemplarily, the terminal 101 can determine the reference downlink timing based on a primary cell where the second TRP 103 is located. For example, in FIG. 4C, the terminal 101 determines the reference downlink timing based on a downlink timing corresponding to the first TRP 102 in the primary cell.

[0229] Exemplarily, the terminal 101 can determine the reference downlink timing based on a downlink timing corresponding to the first TRP 102 in any cell within a same TAG as the second TRP 103. For example, in FIG. 4C, the second TRP 103 is within a same TAG as the secondary cell #1, the secondary cell #2, and the secondary cell #3, then the terminal 101 can determine the reference downlink timing based on a downlink timing corresponding to the first TRP 102 in the secondary cell #2. The secondary cell #2 can be in an activated state at this time.

[0230] wherein, the transmission of the uplink frame occurs at (N TA +N TA offset )×T cBefore the first detection path (in time) of the corresponding downlink frame received from the reference cell, the terminal 101 can determine the reference downlink timing of the second TRP 103 based on the downlink timing corresponding to the first TRP 102 of the third cell.

[0231] N TA TA, N TA offset TA corresponds to the offset, T c The value of T

[0232] N TA may be configured by the network side for each TAG.

[0233] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the third TCI state.

[0234] The third TCI state is an activated downlink TCI state or a used downlink TCI state on the first TRP 102 in the third cell.

[0235] The third cell can be any one of the following cells:

[0236] The primary cell where the second TRP is located;

[0237] Any cell in the same TAG as the second TRP.

[0238] Exemplarily, the terminal 101 can determine the reference downlink path loss based on any activated TCI state of the PDSCH of the first TRP 102 in the third cell.

[0239] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the currently used activated TCI state of the PDSCH of the first TRP 102 in the third cell.

[0240] Step S2103, the terminal 101 determines the offset of the uplink parameter for the second TRP 103.

[0241] In some embodiments, the terminal 101 can determine the offset of the uplink timing and / or the offset of the uplink transmission power for the second TRP 103 based on the configuration of the network side (such as the first TRP 102 or the second TRP 103).

[0242] Step S2104, the terminal 101 determines the uplink parameter based on the reference point and / or the offset.

[0243] In some embodiments, for the uplink timing of the second TRP 103, the reference point is the reference downlink timing, and the offset is the TA. The terminal 101 can calculate the uplink timing of the second TRP 103 by using the following formula 1:

[0244] Uplink timing of the second TRP 103 = Reference downlink timing - TA Formula 1

[0245] It should be noted that the uplink needs to be sent in advance, and therefore the terminal 101 can calculate the difference between the reference downlink timing and the TA to obtain the uplink timing of the second TRP 103.

[0246] In some embodiments, for the uplink transmission power of the second TRP 103, the reference point is the reference downlink path loss, and the offset is the path loss offset. The terminal 101 can calculate the uplink transmission power of the second TRP 103 by using the following formula 2:

[0247] Uplink transmission power of the second TRP 103 = Reference downlink path loss + Path loss offset Formula 2

[0248] The above is only an exemplary description, and the present disclosure does not limit the manner of determining the above parameters.

[0249] In some embodiments, the terminal 101 can send an uplink signal to the second TRP 103 based on the uplink timing of the second TRP 103. The uplink signal includes but is not limited to a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), a sounding reference signal (SRS), and the like.

[0250] In some embodiments, the terminal 101 can send an uplink signal to the second TRP 103 based on the uplink transmission power of the second TRP 103. The uplink signal includes but is not limited to a PUSCH, a PUCCH, an SRS, and the like.

[0251] In some embodiments, the names of information and the like 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", "codebook", "codeword", "code point", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0252] In some embodiments, terms such as "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI", and the like can be replaced with each other.

[0253] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other, and can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by processing oneself, autonomously implementing, and the like.

[0254] In some embodiments, terms such as "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other.

[0255] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2104. For example, step S2101a can be implemented as an independent embodiment, step S2101b can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, steps S2101-S2104 can be implemented as independent embodiments, but are not limited thereto.

[0256] In some embodiments, steps S2101a and S2101b can be executed alternatively or both executed, and of course, neither can be executed.

[0257] In some embodiments, steps S2101 to S2104 are optional, and one or more of the steps can be omitted or replaced in different embodiments.

[0258] In some embodiments, the execution order of steps S2101 to S2104 is not limited.

[0259] In the above embodiments, the reference point of the uplink parameter of the second TRP supporting uplink transmission can be determined, and the uplink parameter of the terminal is determined. In the asymmetric scenario, the uplink transmission performance is improved, and the performance and availability of the asymmetric deployment are improved.

[0260] FIG. 3A is an interaction schematic diagram of a parameter determination method according to an embodiment of the present disclosure. As shown in FIG. 3A, the present disclosure relates to a parameter determination method, and the method is performed by the terminal 101, and the method comprises:

[0261] In step S3101, configuration information is obtained.

[0262] In some embodiments, the configuration information is used to configure the reference points of the uplink parameters of the second TRP 103 to correspond to the same cell.

[0263] In some embodiments, the terminal 101 can obtain the configuration information from the first TRP 102 or the second TRP 103, but is not limited thereto, and can also receive configuration information sent by other subjects.

[0264] In some embodiments, the terminal 101 obtains the configuration information specified by a protocol.

[0265] In some embodiments, the terminal 101 obtains the configuration information from the upper layer(s).

[0266] In some embodiments, the terminal 101 processes to obtain the configuration information.

[0267] In some embodiments, step S3101 is omitted, and the terminal 101 autonomously implements the function indicated by the configuration information, or the terminal 101 obtains the configuration information based on a pre-defined rule or a protocol agreement, or the above function is default or default.

[0268] In some embodiments, the optional implementation of step S3101 can refer to the optional implementation of steps S2101a and S2101b in FIG. 2 and other associated parts in the embodiments related to FIG. 2, which will not be described here.

[0269] In step S3102, the reference point of the uplink parameter of the second TRP is determined.

[0270] In some embodiments, the optional implementation of step S3102 can refer to the optional implementation of step S2102 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0271] Step S3103, determining the offset of the uplink parameter for the second TRP.

[0272] In some embodiments, the optional implementation of step S3103 can refer to the optional implementation of step S2103 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0273] Step S3104, determining the uplink parameter.

[0274] In some embodiments, the optional implementation of step S3104 can refer to the optional implementation of step S2104 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0275] In some embodiments, step S3101 can not be performed.

[0276] In some embodiments, steps S3101 to S3104 are optional, and one or more of the steps can be omitted or replaced in different embodiments.

[0277] In some embodiments, the execution order of steps S3101 to S3104 is not limited.

[0278] In the above embodiments, the reference point of the uplink parameter for the second TRP supporting uplink transmission can be determined, so as to determine the uplink parameter of the terminal. In the asymmetric scenario, the uplink transmission performance is improved, and the performance and availability of asymmetric deployment are improved.

[0279] FIG. 3B is an interaction schematic diagram of a parameter determination method according to an embodiment of the present disclosure. As shown in FIG. 3B, the present disclosure relates to a parameter determination method, and the above method is performed by the first TRP 102, which includes:

[0280] Step S3201, sending configuration information.

[0281] In some embodiments, the configuration information is used to configure the reference points of the uplink parameters of the second TRP 103 to correspond to the same cell.

[0282] In some embodiments, the first TRP 102 sends the configuration information to the terminal 101.

[0283] In some embodiments, the terminal 101 receives the configuration information.

[0284] In some embodiments, the optional implementation of step S3201 can refer to the optional implementation of step S2101a in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which are not described here again.

[0285] In the above embodiments, the reference points of the uplink parameters of the second TRP can be configured to correspond to the same cell, which improves the uplink transmission reliability in the asymmetric scenario and improves the performance and availability of the asymmetric deployment.

[0286] FIG. 3C is an interaction schematic diagram of a parameter determination method according to an embodiment of the present disclosure. As shown in FIG. 3C, the present disclosure relates to a parameter determination method, and the above method is performed by the second TRP 103, which includes the following steps:

[0287] In step S3301, configuration information is sent.

[0288] In some embodiments, the configuration information is used to configure the reference points of the uplink parameters of the second TRP 103 to correspond to the same cell.

[0289] In some embodiments, the second TRP 103 sends the configuration information to the terminal 101.

[0290] In some embodiments, the terminal 101 receives the configuration information.

[0291] In some embodiments, the optional implementation of step S3301 can refer to the optional implementation of step S2101b in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which are not described here again.

[0292] In the above embodiments, the reference points of the uplink parameters of the second TRP can be configured to correspond to the same cell, which improves the uplink transmission reliability in the asymmetric scenario and improves the performance and availability of the asymmetric deployment.

[0293] The above process is further illustrated as follows.

[0294] The terminal 101 can calculate the uplink timing of the second TRP 103 by using the following formula 1:

[0295] Uplink timing of the second TRP 103 = Reference downlink timing - TA formula 1

[0296] Since the UL-only TRP has no downlink reference signal (DL RS), it is impossible to calculate the reference DL timing. On the other hand, it is necessary to find the reference DL timing of the UL transmission.

[0297] In addition, the terminal 101 can calculate the uplink transmission power of the second TRP 103 by using the following formula 2:

[0298] The uplink transmission power of the second TRP103 = reference downlink path loss + path loss offset formula 2

[0299] Similarly, since UL TRP does not have DL RS, a reference downlink path loss needs to be found.

[0300] Scenario 1: Terminal 101 does not support carrier aggregation (CA).

[0301] In scenario 1-1, terminal 101 supports a single timing advance (TA), for example, it supports one TA.

[0302] For example, terminal 101 supports one TA, which means that regardless of whether it is for the first TRP 102 or the second TRP 103, terminal 101 will only determine one TA.

[0303] For example, as shown in Figure 4A, the first TRP102 and the second TRP103 are in the same Timing Advance Group (TAG). Since CA is not supported, this TAG is the Primary Timing Advance Group (pTAG).

[0304] For example, terminal 101 may determine reference downlink timing based on the first downlink timing.

[0305] Among them, the first downlink timing is the downlink timing corresponding to the first TRP in the first cell, where the first cell is the primary cell.

[0306] Among them, the transmission of uplink frames occurs in (N TA +N TA offset )×T c At a location located before the first detection path (in time) from the reference cell to receive the corresponding downlink frame, the terminal 101 can use the downlink timing corresponding to the first TRP 102 of the primary cell as the reference downlink timing for the second TRP 103.

[0307] Where, N TA It refers to TA, N TA offset This refers to the offset corresponding to TA, T c The value can be 0.509 nanoseconds (ns).

[0308] Among them, N can be configured by the network side for the first TRP102 and the second TRP103. TA In other words, both the first TRP102 and the second TRP103 can be based on N. TA Determine the reference downlink timing.

[0309] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the first TCI state.

[0310] The first TCI state is a downlink TCI state used by the first TRP 102 in the first cell (i.e., the primary cell) or any activated TCI state.

[0311] Exemplarily, the terminal 101 can determine the reference downlink path loss based on a TCI state currently used by a physical downlink shared channel (PDSCH) of the first TRP 102 in the primary cell.

[0312] Exemplarily, the terminal 101 can determine the reference downlink path loss based on any activated TCI state in the first TRP 102 in the primary cell.

[0313] In the scenario 1-2, the terminal 101 supports multiple TAs, for example, supports 2 TAs.

[0314] Exemplarily, the terminal 101 supporting 2 TAs can mean that the terminal 101 supports determining a corresponding TA for the first TRP 102 and the second TRP 103 respectively.

[0315] It can be understood that at this time, the first TRP 102 and the second TRP 103 can be far apart in geographical position because the same TA cannot be used.

[0316] Exemplarily, the number of reference points corresponding to the first TRP 102 and the second TRP 103 is 1.

[0317] That is, the first TRP 102 and the second TRP 103 can correspond to the same reference downlink timing.

[0318] Exemplarily, the number of reference points corresponding to the first TRP 102 and the second TRP 103 can be 2.

[0319] That is, the first TRP 102 and the second TRP 102 can correspond to a reference downlink timing respectively.

[0320] It can be understood that because CA is not supported, at this time, there is only one primary cell and one TRP supporting downlink transmission, that is, one first TRP 102, and in actual application, only one reference downlink timing is determined for the first TRP 102 and the second TRP 103.

[0321] Exemplarily, the transmission of the uplink frame occurs at (N TA +N TA offset )×T cThe terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 of the primary cell, as the reference downlink timing of the second TRP 103, at (N

[0322] wherein N TA refers to TA, N TA offset refers to the offset corresponding to TA, and T c may be 0.509ns.

[0323] wherein N TA may be configured by the network side for each TAG separately.

[0324] wherein the first TCI state is the downlink TCI state used by the first TRP 102 in the first cell (i.e., the primary cell) or any activated TCI state.

[0325] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the TCI state currently used by the PDSCH of the first TRP 102 in the primary cell.

[0326] Exemplarily, the terminal 101 can determine the reference downlink path loss based on any activated TCI state of the first TRP 102 in the primary cell.

[0327] Scenario 2, supporting CA.

[0328] wherein scenario 2-1, the terminal 101 supports a single TA.

[0329] Case 1, the second TRP 103 is located in the pTAG.

[0330] Exemplarily, the terminal 101 can determine the reference downlink timing based on the first downlink timing.

[0331] wherein the first downlink timing is the downlink timing corresponding to the first TRP in the first cell, and the first cell here is the primary cell since the second TRP 103 is located in the pTAG.

[0332] wherein the transmission of the uplink frame occurs at (N TA +N TA offset )×T c The terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 of the primary cell, as the reference downlink timing of the second TRP 103, at (N

[0333] wherein N TA refers to TA, N TA offset refers to the offset corresponding to TA, and Tc The value can be 0.509ns.

[0334] Among them, N can be configured by the network side for the first TRP102 and the second TRP103. TA In other words, both the first TRP102 and the second TRP103 can be based on N. TA Determine the reference downlink timing.

[0335] For example, terminal 101 can determine the reference downlink path loss based on the first TCI state.

[0336] The first TCI state is either the downlink TCI state used by the first TRP102 in the first cell (i.e., the primary cell) or any active TCI state.

[0337] For example, terminal 101 can determine the reference downlink path loss based on the TCI state currently used by the Physical Downlink Shared Channel (PDSCH) of the first TRP 102 in the primary cell.

[0338] For example, terminal 101 can determine the reference downlink path loss based on any active TCI state in the first TRP 102 in the primary cell.

[0339] Case 2: The second TRP103 is located within the Secondary Timing Advance Group (sTAG).

[0340] For example, terminal 101 may determine reference downlink timing based on the second downlink timing.

[0341] The second downlink timing is the downlink timing corresponding to the first TRP in the second cell.

[0342] The second cell can be any of the following:

[0343] The secondary cell where the second TRP103 is located;

[0344] Any active secondary cell within the same sTAG as the second TRP103.

[0345] For example, terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP102 in the secondary cell where the second TRP103 is located, for example, in Figure 4B, the second TRP103 is located in secondary cell #1.

[0346] Exemplarily, the terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in any activated secondary cell within the same sTAG as the second TRP 103. For example, in FIG. 4B, the second TRP 103 is in secondary cell #1, the second TRP 103 is within the same sTAG as secondary cell #2, secondary cell #3, and secondary cell #3 is in an activated state, then the terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in secondary cell #3.

[0347] wherein the transmission of the uplink frame occurs at (N TA +N TA offset )×T c , which is before the first detected path (in time) of the corresponding downlink frame received from the reference cell, the terminal 101 can determine the reference downlink timing of the second TRP 103 based on the downlink timing corresponding to the first TRP 102 of the primary cell.

[0348] wherein N TA is the TA, N TA offset is the offset corresponding to the TA, and T c may be 0.509ns.

[0349] wherein N TA may be configured by the network side for all activated secondary cells and the second TRP 103.

[0350] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the second TCI state.

[0351] wherein the second TCI state is an activated downlink TCI state or a used downlink TCI state on the first TRP 102 in the second cell.

[0352] wherein the second cell can be any of the following:

[0353] a secondary cell in which the second TRP 103 is located;

[0354] any activated secondary cell within the same sTAG as the second TRP 103.

[0355] Exemplarily, the terminal 101 can determine the reference downlink path loss based on any activated TCI state of the PDSCH of the first TRP 102 in the second cell.

[0356] Exemplarily, the terminal 101 can determine the reference downlink path loss based on the currently used activated TCI state of the PDSCH of the first TRP 102 in the second cell.

[0357] In the scenario 2-2, the terminal 101 supports multiple TA, for example, supports 2 TA.

[0358] Exemplarily, the terminal 101 can determine the reference downlink timing based on the third downlink timing.

[0359] The third downlink timing is the downlink timing corresponding to the first TRP 102 in the third cell.

[0360] The third cell is any one of the following:

[0361] The primary cell where the second TRP is located;

[0362] Any cell in the same TAG as the second TRP.

[0363] Exemplarily, the terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in the primary cell where the second TRP 103 is located, for example, in FIG. 4C, the terminal 101 determines the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in the primary cell.

[0364] Exemplarily, the terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in any cell in the same TAG as the second TRP 103. For example, in FIG. 4C, the second TRP 103 is in the same TAG as the secondary cell #1, the secondary cell #2, and the secondary cell #3, so the terminal 101 can determine the reference downlink timing based on the downlink timing corresponding to the first TRP 102 in the secondary cell #2. At this time, the secondary cell #2 can be in an activated state.

[0365] The transmission of the uplink frame occurs at (N TA +N TA offset )×T c , which is before the first detected path (in time) of the corresponding downlink frame received from the reference cell, the terminal 101 can determine the reference downlink timing of the second TRP 103 based on the downlink timing corresponding to the first TRP 102 of the third cell.

[0366] N TA is the TA, N TA offset is the offset corresponding to the TA, and T c can be 0.509 ns.

[0367] N TA may be configured by the network side for each TAG.

[0368] Exemplarily, the terminal 101 can determine the reference downlink loss based on the third TCI state.

[0369] The third TCI state is an activated downlink TCI state or a used downlink TCI state of the first TRP 102 in the third cell.

[0370] The third cell can be any one of the following cells:

[0371] The primary cell in which the second TRP is located;

[0372] Any cell in the same TAG as the second TRP.

[0373] Illustratively, the terminal 101 can determine the reference downlink path loss based on any activated TCI state of the PDSCH of the first TRP 102 in the third cell.

[0374] Illustratively, the terminal 101 can determine the reference downlink path loss based on the currently used activated TCI state of the PDSCH of the first TRP 102 in the third cell.

[0375] In the embodiments of the present disclosure, if the reference downlink timing and the reference downlink path loss correspond to different cells, for example, as shown in FIG. 4D, the uplink timing and the uplink transmission power can not be matched, and the uplink transmission performance can be reduced.

[0376] Therefore, in the present disclosure, it is desirable that the reference point of the uplink timing and the reference point of the uplink transmission power have the same QCL relationship or have a certain QCL relationship, and thus the following methods can be used to solve the problem:

[0377] Method 1: The network side, for example, the first TRP 102 or the second TRP 103, configures the reference points of the uplink parameters of the second TRP to correspond to the same cell.

[0378] Method 2: The terminal 101 itself selects the same cell for the reference points of the uplink parameters of the second TRP.

[0379] Method 3: It is determined that the uplink parameters of the second TRP belong to the first quasi co-location type, for example, the QCL type D.

[0380] For example, in the same TAG, the activated downlink TCI state or the joint TCI state of the reference cell for the uplink timing and the path loss reference signal are QCL type D.

[0381] The embodiments of the present disclosure also propose a device for implementing any one of the above methods, for example, a device including units or modules for implementing each step performed by the terminal in any one of the above methods. For another example, another device is also proposed, including units or modules for implementing each step performed by the first TRP or the second TRP in any one of the above methods.

[0382] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to realize any of the above methods or realize the functions of each unit or module of the above apparatus, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship of elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the above units or modules. All units or modules of the above apparatus can be all implemented in the form of processor calling software, or all implemented in the form of hardware circuit, or part implemented in the form of processor calling software and the remaining part implemented in the form of hardware circuit.

[0383] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), or the like.

[0384] FIG. 5A is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 5A, the terminal 5100 can include a processing module 5101.

[0385] In some embodiments, the processing module 5101 is configured to determine a reference point of an uplink parameter by a second transmission reception point (TRP); the second TRP supports uplink transmission; determine an offset of the uplink parameter for the second TRP; and determine the uplink parameter based on the reference point and / or the offset.

[0386] Optionally, the processing module 5101 is configured to perform at least one of other steps (for example, steps S2102, S2103, and S2104, but not limited thereto) performed by the terminal 5100 in any of the above methods. Details are not described herein again.

[0387] FIG. 5B is a structural schematic diagram of a first TRP according to an embodiment of the present disclosure. As shown in FIG. 5B, the first TRP 5200 can include a transceiver module 5201.

[0388] In some embodiments, the transceiver module 5201 is configured to send configuration information to the terminal; wherein the configuration information is used to configure the reference points of the uplink parameters of the second TRP to correspond to the same cell, and the second TRP supports uplink transmission.

[0389] Optionally, the transceiver module 5201 is configured to perform at least one of the steps of sending and / or receiving communications in any one of the above methods (for example, step S2101a, but not limited thereto), which will not be repeated here.

[0390] FIG. 5C is a structural schematic diagram of a second TRP according to an embodiment of the present disclosure. As shown in FIG. 5C, the second TRP 5300 can include a transceiver module 5301.

[0391] In some embodiments, the transceiver module 5301 is configured to send configuration information to the terminal; wherein the configuration information is used to configure the reference points of the uplink parameters of the second TRP to correspond to the same cell, and the second TRP supports uplink transmission.

[0392] Optionally, the transceiver module 5301 is configured to perform at least one of the steps of sending and / or receiving communications in any one of the above methods (for example, step S2101b, but not limited thereto), which will not be repeated here.

[0393] In some embodiments, the sending module and / or the receiving module can be referred to as a transceiver module, and the sending module and the receiving module can be separate or integrated together. Optionally, the transceiver module can be replaced by a transceiver.

[0394] In some embodiments, the processing module can be one module or can include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required by the processing module. Optionally, the processing module can be replaced by a processor.

[0395] FIG. 6A is a structural schematic diagram of a communication device 6100 according to an embodiment of the present disclosure. The communication device 6100 can be a terminal (for example, a user equipment, a vehicle, an Internet of Things device, etc.) or a TRP (for example, a first TRP, a second TRP, etc.), a chip, a chip system, or a processor supporting the terminal to implement any one of the above methods, or a chip, a chip system, or a processor supporting the TRP to implement any one of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments, and specific implementation can be referred to the descriptions in the above method embodiments.

[0396] As shown in FIG. 6A, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general processor or a special-purpose processor, etc., such as a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, the central processing unit can be configured to control the communication device (e.g., a TRP, a terminal device, a terminal device chip, etc.), execute programs, and process data of the programs. Optionally, the communication device 6100 is configured to perform any of the above methods. Optionally, the one or more processors 6101 are configured to invoke instructions to cause the communication device 6100 to perform any of the above methods.

[0397] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps (e.g., steps S2101a, steps S2101b, but not limited to) in the above methods, and the processor 7101 performs at least one of the other steps (e.g., steps S2102, steps S2103, steps S2104, but not limited to). In optional embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, etc. can be replaced by each other, and the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0398] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Optionally, all or part of the memory 6103 can also be outside the communication device 6100. In optional embodiments, the communication device 6100 can include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6103, and the interface circuit 6104 can be configured to receive data from the memory 6103 or other devices, and can be configured to send data to the memory 6103 or other devices. For example, the interface circuit 6104 can read data stored in the memory 6103 and send the data to the processor 6101.

[0399] The communication device 6100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 can not be limited by FIG. 6A. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) and the like.

[0400] FIG. 6B is a structural schematic diagram of a chip 6200 according to an embodiment of the present disclosure. For the case where the communication device 6100 is a chip or a chip system, the structural schematic diagram of the chip 6200 shown in FIG. 6B can be referred to, but is not limited thereto.

[0401] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to perform any of the above methods.

[0402] In some embodiments, the chip 6200 further includes one or more interface circuits 6202. Optionally, the terms interface circuit, interface, transceiver pin, and the like can be replaced with each other. In some embodiments, the chip 6200 further includes one or more memories 6203 for storing data. Optionally, all or part of the memory 6203 can be outside the chip 6200. Optionally, the interface circuit 6202 is connected to the memory 6203, and the interface circuit 6202 can be configured to receive data from the memory 6203 or other devices, and the interface circuit 6202 can be configured to send data to the memory 6203 or other devices. For example, the interface circuit 6202 can read data stored in the memory 6203 and send the data to the processor 6201.

[0403] In some embodiments, the interface circuit 6202 performs at least one of the communication steps (such as step S2101a, step S2101b, but not limited thereto) in the above methods. The interface circuit 6202 performing the communication steps in the above methods, for example, means that the interface circuit 6202 performs data interaction between the processor 6201, the chip 6200, the memory 6203, or a transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps (such as step S2102, step S2103, step S2104, but not limited thereto).

[0404] The modules and / or devices described in each embodiment of the virtual device, physical device, chip, etc. can be combined or separated according to circumstances. Optionally, part or all of the steps can also be performed by multiple modules and / or devices in cooperation, which is not limited here.

[0405] The disclosure further proposes a storage medium, and instructions are stored on the storage medium. When the instructions run on the communication device 6100, the communication device 6100 performs any one of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0406] The disclosure further proposes a program product, and the program product is executed by the communication device 6100, so that the communication device 6100 performs any one of the above methods. Optionally, the program product is a computer program product.

[0407] The disclosure further proposes a computer program, which, when running on a computer, causes the computer to perform any one of the above methods.

[0408] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The disclosure is intended to cover any variations, uses or adaptations of the disclosure following the general principles thereof and including such departures from the present disclosure as come within known use or custom in the art to which the disclosure pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the disclosure are indicated by the following claims.

[0409] It should be understood that the present disclosure is not limited to the precise structures described and shown in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A parameter determination method characterized by, The method is performed by a terminal, and the method comprises: determining a reference point of an uplink parameter for a second transmission and reception point, TRP; wherein the second TRP supports uplink transmission; determining an offset of the uplink parameter for the second TRP; determining the uplink parameter based on the reference point and / or the offset.

2. The method of claim 1, wherein: the uplink parameter is uplink timing, and the reference point is a reference downlink timing; and / or the uplink parameter is uplink transmit power, and the reference point is a reference downlink path loss. The determining of the reference point of the uplink parameter for the second transmission and reception point, TRP, comprises any of the following:

3. The method according to claim 1 or 2, characterized in that, without supporting carrier aggregation, supporting a single timing advance, TA, or multiple TAs, determining a reference downlink timing based on a first downlink timing; with supporting carrier aggregation, supporting a single TA, and the second TRP being located in a primary timing advance group, pTAG, determining a reference downlink timing based on a first downlink timing; wherein the first downlink timing is a downlink timing corresponding to a first TRP in a first cell, and the first TRP supports uplink transmission and downlink transmission. The method further comprises:

4. The method of claim 3, wherein, without supporting carrier aggregation, supporting multiple TAs, determining that a number of reference points corresponding to the first TRP and the second TRP is 1 or 2. The determining of the reference point of the uplink parameter for the second transmission and reception point, TRP, comprises any of the following:

5. The method according to claim 1 or 2, characterized in that, without supporting carrier aggregation, supporting a single timing advance, TA, or multiple TAs, determining a reference downlink path loss based on a first TCI state; with supporting carrier aggregation, supporting a single TA, and the second TRP being located in a primary timing advance group, pTAG, determining a reference downlink path loss based on a first TCI state; wherein the first TCI state is a downlink TCI state used by a first TRP in a first cell or any activated TCI state; and wherein the first TRP supports uplink transmission and downlink transmission. The first cell is a primary cell.

6. The method according to any one of claims 3-5, characterized in that, The determining of the reference point of the uplink parameter for the second transmission and reception point, TRP, comprises:

7. The method according to claim 1 or 2, characterized in that, with supporting carrier aggregation, supporting a single TA, and the second TRP being located in a secondary timing advance group, sTAG, determining a reference downlink timing based on a second downlink timing; wherein the second downlink timing is a downlink timing corresponding to a first TRP in a second cell, and the first TRP supports uplink transmission and downlink transmission. The determining of the reference point of the uplink parameter for the second transmission and reception point, TRP, comprises:

8. The method of claim 1 or 2, wherein, with supporting carrier aggregation, supporting a single TA, and the second TRP being located in a secondary timing advance group, sTAG, determining a reference downlink path loss based on a second TCI state; wherein the second TCI state is an activated downlink TCI state or a used downlink TCI state of a first TRP in a second cell. The second cell is any of the following:

9. The method according to claim 7 or 8, characterized in that, a secondary cell in which the second TRP is located; any activated secondary cell in a same sTAG as the second TRP. The determining of the reference point of the uplink parameter for the second transmission and reception point, TRP, comprises:

10. The method of claim 1 or 2, wherein, ​ It supports carrier aggregation and multiple TAs. The second TRP and the primary cell are located in different TAGs. The reference downlink timing is determined based on the third downlink timing. The third downlink timing is the downlink timing corresponding to the first TRP in the third cell. The first TRP supports uplink and downlink transmission.

11. The method of claim 1 or 2, wherein, The reference point for determining uplink parameters for the second transmission receiving point (TRP) includes: It supports carrier aggregation and multiple TAs. The second TRP and the primary cell are located in different TAGs. The reference downlink path loss is determined based on the third TCI state. The third TCI state is the downlink TCI state activated on the first TRP in the third cell or the downlink TCI state used.

12. The method according to claim 10 or 11, characterized in that, The third cell is any of the following cells: The primary cell where the second TRP is located; Any cell that is in the same tag as the second TRP.

13. The method according to any one of claims 1 to 12, characterized in that, The method further includes any one of the following: Based on the configuration information sent by the first TRP or the second TRP, the reference points of each uplink parameter of the second TRP are determined to correspond to the same cell; wherein, the first TRP supports uplink transmission and downlink transmission; Select the same cell as the reference point for each uplink parameter of the second TRP; The reference point for each uplink parameter of the second TRP is determined to belong to the first quasi-co-address type.

14. A parameter determination method characterized by, The method is executed by a first transmission receiving point (TRP), which supports uplink and downlink transmissions. The method includes: Send configuration information to the terminal; wherein the configuration information is used to configure the reference points of each uplink parameter of the second TRP to correspond to the same cell, and the second TRP supports uplink transmission.

15. The method of claim 14, wherein, The uplink parameters include uplink timing and uplink transmission power.

16. A parameter determination method characterized by, The method is executed by a second transmission receiving point (TRP), which supports uplink transmission. The method includes: Send configuration information to the terminal; wherein the configuration information is used to configure the reference points of each uplink parameter of the second TRP to correspond to the same cell, and the second TRP supports uplink transmission.

17. The method of claim 16, wherein, The uplink parameters include uplink timing and uplink transmission power.

18. A terminal, characterized by include: The processing module is configured as a reference point for the second transmission receiving point (TRP) to determine uplink parameters; wherein the second TRP supports uplink transmission. The processing module is also configured to determine the offset of the uplink parameters by the second TRP; The processing module is also configured to determine the uplink parameters based on the reference point and / or the offset.

19. A first transmission reception point (TRP), comprising: The first TRP supports uplink and downlink transmissions, and the first TRP includes: The transceiver module is configured to send configuration information to the terminal; wherein the configuration information is used to configure the reference points of each uplink parameter of the second TRP to correspond to the same cell, and the second TRP supports uplink transmission.

20. A second transmission reception point (TRP), comprising: The second TRP supports uplink transmission, and the second TRP includes: The transceiver module is configured to send configuration information to the terminal; wherein the configuration information is used to configure the reference points of each uplink parameter of the second TRP to correspond to the same cell, and the second TRP supports uplink transmission.

21. A terminal, characterized by include: One or more processors; The processor is configured to perform the parameter determination method in any one of claims 1-13.

22. A transmission reception point (TRP) comprising: The apparatus comprises: one or more processors; The processor is configured to perform the parameter determination method in any one of claims 14-15 or 16-17.

23. A communication system, characterized by The apparatus comprises: a terminal configured to implement the parameter determination method in any one of claims 1-13; a first transmission reception point, TRP, supporting uplink transmission and downlink transmission, the first TRP being configured to implement the parameter determination method in claim 14 or 15; a second TRP supporting uplink transmission, the second TRP being configured to implement the parameter determination method in claim 16 or 17.

24. A storage medium, the storage medium storing instructions, wherein, The instructions, when executed on the electronic device, cause the electronic device to perform the parameter determination method in any one of claims 1-13, 14-15 or 16-17.

25. A computer program product comprising a computer program, characterized in that, The computer program, when executed by the processor, is configured to implement the parameter determination method in any one of claims 1-13, 14-15 or 16-17.

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