Phase tracking reference signal sending method, and terminal, apparatus, system and medium

Abstract

The present disclosure relates to a phase tracking reference signal (PTRS) sending method, and a terminal, an apparatus, a system and a medium. The method comprises: in a plurality of TOs of a PUSCH, a terminal determining the actual number of PTRS ports in the first TO, and DMRS port groups respectively associated with the PTRS ports, and determining, from the DMRS port groups, DMRS ports associated with the PTRS ports; the terminal sending in the first TO a PTRS on the basis of an associated DMRS port; and in TOs other than the first TO, the terminal sending a PTRS on the basis of the DMRS port groups, wherein the terminal is a terminal having three transmitting antennas or antenna ports, and repeated transmission of the PUSCH is configured for the terminal, with the number of repeated transmissions being greater than 1. In the present disclosure, in a scenario in which repeated transmission of a PUSCH is configured for a terminal, the terminal respectively determines, on the basis of DMRS port groups associated with PTRS ports in the first TO, DMRS ports associated with PTRS ports in different TOs, such that PTRSs can be separately sent in the TOs during repeated transmission, thereby improving the accuracy of phase noise estimation performed at a network side.

Description

Phase tracking reference signal transmission method, terminal, device, system and medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, terminal, device, system, and medium for sending a phase tracking reference signal. Background Art

[0002] In communications, phase noise (PN) can cause common phase error (CPE), a particularly pronounced effect at high frequencies. Terminals can send a Phase Tracking Reference Signal (PTRS) to allow network equipment to estimate phase noise.

[0003] Summary of the Invention

[0004] In the scenario where physical uplink shared channel (PUSCH) repetition is configured, it is necessary to solve the problem of how to send PTRS.

[0005] Embodiments of the present disclosure provide a PTRS sending method, terminal, device, system, and medium.

[0006] In a first aspect, an embodiment of the present disclosure provides a PTRS sending method, including:

[0007] In multiple transmission occasions (TOs) of a physical uplink shared channel (PUSCH), the terminal determines the actual number of PTRS ports in a first TO and a demodulation reference signal (DMRS) port group associated with each PTRS port, and determines the DMRS port associated with the PTRS port in the DMRS port group;

[0008] The terminal sends PTRS based on the associated DMRS port in the first TO;

[0009] In TOs other than the first TO, the terminal sends PTRS according to the DMRS port grouping;

[0010] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0011] In a second aspect, an embodiment of the present disclosure provides a PTRS sending method, the method comprising:

[0012] In multiple transmission opportunities TO of the PUSCH, the network device receives the PTRS in the first TO, where the PTRS is sent by the terminal based on the actual number of PTRS ports in the first TO and the DMRS ports associated with each PTRS port, where the associated DMRS port is determined in the DMRS port group associated with the PTRS port;

[0013] In TOs other than the first TO, the network device receives PTRS according to the DMRS port grouping;

[0014] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0015] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0016] A processing module, configured to determine, among multiple TOs of a PUSCH, the actual number of PTRS ports in a first TO and the DMRS port groups associated with each PTRS port, and determine the DMRS port associated with the PTRS port in the DMRS port group;

[0017] The transceiver module is used to send PTRS based on the DMRS port in the first TO;

[0018] The transceiver module is further used to send PTRS according to the DMRS port grouping in TOs other than the first TO;

[0019] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0020] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0021] a transceiver module configured to receive a PTRS in a first TO among multiple TOs of a PUSCH, wherein the PTRS is sent by the terminal based on the actual number of PTRS ports in the first TO and the DMRS ports associated with each PTRS port, and the associated DMRS port is determined in the DMRS port group associated with the PTRS port;

[0022] The transceiver module is further used to receive PTRS according to the DMRS port grouping in TOs other than the first TO;

[0023] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0024] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0025] one or more processors;

[0026] The terminal is used to execute the method of the first aspect.

[0027] In a sixth aspect, an embodiment of the present disclosure provides a network device, including:

[0028] one or more processors;

[0029] The terminal is used to execute the method of the second aspect.

[0030] In a seventh aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a network device, wherein:

[0031] The terminal is configured to implement the method of the first aspect;

[0032] The network device is configured to implement the method of the second aspect.

[0033] In an eighth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:

[0034] When the instructions are executed on the communication device, the communication device is caused to execute the method of the first aspect or the second aspect.

[0035] In an embodiment of the present disclosure, in a scenario where the terminal is configured with repeated transmission of PUSCH, the terminal determines the DMRS ports associated with the PTRS ports in different TOs based on the DMRS port grouping associated with the PTRS port in the first TO, so that PTRS can be sent separately in the repeatedly transmitted TO to improve the accuracy of phase noise estimation on the network side. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0037] FIG1a is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0038] FIG1b to FIG1e are schematic structural diagrams showing a DMRS according to an exemplary embodiment;

[0039] Figures 2a and 2b are exemplary interaction diagrams of a method provided according to an embodiment of the present disclosure;

[0040] Figures 2c to 2f are schematic diagrams of terminal radio frequency architectures provided according to embodiments of the present disclosure;

[0041] Figures 2g to 2k are schematic diagrams of repeated transmission according to an embodiment of the present disclosure;

[0042] FIG3 is an exemplary flowchart of a method provided according to an embodiment of the present disclosure;

[0043] FIG4 is an exemplary flowchart of a method provided according to an embodiment of the present disclosure;

[0044] FIG5a is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

[0045] FIG5b is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

[0046] FIG6a is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0047] FIG6 b is a schematic diagram of a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] Embodiments of the present disclosure provide a PTRS sending method, terminal, device, system, and medium.

[0049] In a first aspect, an embodiment of the present disclosure provides a PTRS sending method, including:

[0050] In multiple transmission opportunities TO of the physical uplink shared channel PUSCH, the terminal determines the actual number of PTRS ports in the first TO and the DMRS port groups associated with each PTRS port, and determines the DMRS port associated with the PTRS port in the DMRS port group;

[0051] The terminal sends PTRS based on the associated DMRS port in the first TO;

[0052] In TOs other than the first TO, the terminal sends PTRS according to the DMRS port grouping;

[0053] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0054] In the above embodiment, in the scenario where the terminal is configured with repeated transmission of PUSCH, the terminal determines the DMRS ports associated with the PTRS ports in different TOs based on the DMRS port grouping associated with the PTRS port in the first TO, so that PTRS can be sent separately in the repeatedly transmitted TO to improve the accuracy of phase noise estimation on the network side.

[0055] In conjunction with the embodiment of the first aspect, in some embodiments, in TOs other than the first TO, the terminal sends PTRS according to the DMRS port group, including:

[0056] The PTRS port in each TO after the first TO is associated with the same DMRS port as the PTRS port in the first TO, and the terminal sends the PTRS in each TO respectively using the same precoding as the DMRS port.

[0057] In the above embodiment, in different TOs, the terminal may send PTRS according to the same DMRS port to improve efficiency.

[0058] In combination with the embodiments of the first aspect, in some embodiments, a DMRS port group includes multiple DMRS ports, and the multiple DMRS ports meet a set order.

[0059] In the above embodiment, the DMRS port grouping may be used to determine the DMRS port associated with the PTRS port in other TOs, so that the PTRS can be effectively sent in the other TOs.

[0060] In combination with the embodiment of the first aspect, in some embodiments, in TOs other than the first TO, the terminal performs PTRS transmission according to the DMRS port grouping, including:

[0061] In the DMRS port group, starting with the next DMRS port of the DMRS port corresponding to the first TO, cyclic mapping is performed in the DMRS port group to determine the DMRS port corresponding to each valid TO after the first TO; wherein the valid TO is a nominal TO or an actual TO;

[0062] Starting from the first actual TO after the first TO, PTRS is sent in each actual TO according to the associated DMRS port.

[0063] In the above embodiment, based on the cyclic mapping in the DMRS port grouping, different DMRS port groupings in the DMRS port groupings may be used to send PTRS in different TOs, which is beneficial to improving the accuracy of phase noise estimation.

[0064] In combination with the embodiment of the first aspect, in some embodiments, when there is no symbol conflict between uplink transmission and downlink transmission in the same TO and no nominal TO discard occurs, the effective TO is the actual TO or nominal TO among the multiple TOs; or,

[0065] When there is a symbol collision between uplink transmission and downlink transmission in the same TO and nominal TO is discarded, the effective TO is the actual TO among multiple TOs.

[0066] In the above embodiment, after determining the DMRS ports associated with the PTRS ports in different TOs, the PTRS may be sent in the actual TO to avoid transmitting the PTRS in the TO with symbol collision.

[0067] In combination with the embodiments of the first aspect, in some embodiments, in the process of determining the DMRS port corresponding to each valid TO in the DMRS port group, the DMRS port associated with the PTRS port in the nominal TO where a symbol conflict occurs and is discarded is discarded or retained.

[0068] In the above embodiment, when determining the DMRS ports associated with the PTRS ports in different TOs based on cyclic mapping, the DMRS port corresponding to the above specific TO may be discarded to accurately determine the DMRS ports associated with the PTRS ports in TOs other than the TO.

[0069] In combination with the embodiment of the first aspect, in some embodiments, when the actual number of PTRS ports is 1, PTRS is sent in each TO based on one DMRS port associated with one PTRS port; or,

[0070] When the actual number of PTRS ports is 2, PTRS is sent in each TO based on the DMRS ports respectively associated with the two PTRS ports.

[0071] In the above embodiments, the manner of sending PTRS in each TO is different based on the different actual number of PTRS ports.

[0072] In combination with the embodiment of the first aspect, in some embodiments, when the actual number of PTRS ports is 1, the DMRS port group includes all allocated DMRS ports; or,

[0073] When the actual number of PTRS ports is 2, each of the two PTRS ports has an associated DMRS port group.

[0074] In the above embodiment, when the actual port numbers of PTRS ports are different, different PTRS ports are respectively associated with DMRS port groups, and thus PTRS needs to be sent according to the DMRS ports associated with the DMRS port groups associated with the PTRS ports themselves.

[0075] In combination with the embodiment of the first aspect, in some embodiments, when the type of repeated transmission is type A, the multiple TOs are respectively located in different time slots, and the different time slots are multiple consecutive time slots; or,

[0076] When the type of repeated transmission is type B, multiple TOs are located in the same or different time slots and multiple TOs are allowed to cross the boundaries of adjacent time slots.

[0077] In the above embodiment, based on different repetition types, different TOs have different location restrictions, and the method of transmitting PTRS can be performed in the actual corresponding TO.

[0078] In a second aspect, an embodiment of the present disclosure provides a PTRS sending method, the method comprising:

[0079] In multiple transmission opportunities TO of the PUSCH, the network device receives the PTRS in the first TO, where the PTRS is sent by the terminal based on the actual number of PTRS ports in the first TO and the DMRS ports associated with each PTRS port, where the associated DMRS port is determined in the DMRS port group associated with the PTRS port;

[0080] In TOs other than the first TO, the network device receives PTRS according to the DMRS port grouping;

[0081] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0082] In conjunction with the embodiment of the second aspect, in some embodiments, in TOs other than the first TO, the network device receives the PTRS according to the DMRS port group, including:

[0083] In each TO after the first TO, the network device receives a PTRS based on the same DMRS port associated with the first TO.

[0084] In combination with the embodiments of the second aspect, in some embodiments, a DMRS port group includes multiple DMRS ports, and the multiple DMRS ports meet a set order.

[0085] In conjunction with the embodiment of the second aspect, in some embodiments, in TOs other than the first TO, the network device receives the PTRS according to the DMRS port group, including:

[0086] Starting from the first valid TO after the first TO, PTRS is received separately in each actual TO according to the associated DMRS port; wherein, the DMRS port corresponding to each valid TO after the first TO is in the DMRS port group, starting with the next DMRS port of the DMRS port corresponding to the first TO, and cyclically determined in the DMRS port group, wherein the valid TO is a nominal TO or an actual TO.

[0087] In conjunction with the embodiments of the second aspect, in some embodiments, when there is no symbol conflict between uplink transmission and downlink transmission in the same TO and no nominal TO discard occurs, the effective TO is the actual TO or nominal TO among the multiple TOs; or,

[0088] When there is a symbol collision between uplink transmission and downlink transmission in the same TO and nominal TO is discarded, the effective TO is the actual TO among multiple TOs.

[0089] In combination with the embodiments of the second aspect, in some embodiments, in the process of determining the DMRS port corresponding to each valid TO in the DMRS port group, the DMRS port associated with the PTRS port in the nominal TO where there is a symbol conflict and is discarded is discarded or retained.

[0090] In combination with the embodiment of the second aspect, in some embodiments, when the actual number of PTRS ports is 1, PTRS is received in each TO based on one DMRS port associated with one PTRS port; or,

[0091] When the actual number of PTRS ports is 2, PTRS is received in each TO based on the DMRS ports respectively associated with the two PTRS ports.

[0092] In conjunction with the embodiment of the second aspect, in some embodiments, when the actual number of PTRS ports is 1, the DMRS port group includes all assignable DMRS ports; or,

[0093] When the actual number of PTRS ports is 2, each of the two PTRS ports has an associated DMRS port group.

[0094] In conjunction with the embodiment of the second aspect, in some embodiments, when the type of repeated transmission is type A, the multiple TOs are respectively located in different time slots, and the different time slots are multiple consecutive time slots; or,

[0095] When the type of repeated transmission is type B, multiple TOs are located in the same or different time slots and multiple TOs are allowed to cross the boundaries of adjacent time slots.

[0096] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0097] A processing module, configured to determine, among multiple TOs of a PUSCH, the actual number of PTRS ports in a first TO and the DMRS port groups associated with each PTRS port, and determine the DMRS port associated with the PTRS port in the DMRS port group;

[0098] The transceiver module is used to send PTRS based on the associated DMRS port in the first TO;

[0099] The transceiver module is further used to send PTRS according to the DMRS port grouping in TOs other than the first TO;

[0100] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0101] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0102] a transceiver module configured to receive a PTRS in a first TO among multiple TOs of a PUSCH, wherein the PTRS is sent by the terminal based on the actual number of PTRS ports in the first TO and the DMRS ports associated with each PTRS port, and the associated DMRS port is determined in the DMRS port group associated with the PTRS port;

[0103] The transceiver module is further used to receive PTRS according to the DMRS port grouping in TOs other than the first TO;

[0104] The terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than one.

[0105] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0106] one or more processors;

[0107] The terminal is used to execute the method of the first aspect.

[0108] In a sixth aspect, an embodiment of the present disclosure provides a network device, including:

[0109] one or more processors;

[0110] The terminal is used to execute the method of the second aspect.

[0111] In a seventh aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a network device, wherein:

[0112] The terminal is configured to implement the method of the first aspect;

[0113] The network device is configured to implement the method of the second aspect.

[0114] In an eighth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:

[0115] When the instructions are executed on the communication device, the communication device is caused to execute the method of the first aspect or the second aspect.

[0116] In a ninth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0117] In a tenth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0118] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0119] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0120] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0121] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0122] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0123] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0124] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0125] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0126] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0127] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0128] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0129] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0130] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0131] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0132] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0133] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0134] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0135] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0136] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0137] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0138] FIG1a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0139] As shown in FIG. 1 a , a communication system 100 includes a terminal 101 and a network device 102 .

[0140] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, 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, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0141] In some embodiments, when the network device 102 is a network device, the network device may include at least one of an access network device and a core network device.

[0142] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0143] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0144] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0145] In some embodiments, the core network device can be a device including one or more network elements, or it can be multiple devices or device groups, each including all or part of one or more network elements. The network element can be virtual or physical. The core network includes, for example, at least one of the Evolved Packet Core (EPC), the 5G Core Network (5GCN), and the Next Generation Core (NGC). Alternatively, the core network device refers to a network element with a specific function, such as the Access Management Function (AMF), the Service Management Function (SMF), etc.

[0146] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0147] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG. 1 a , or a partial body thereof, but are not limited thereto.

[0148] The entities shown in Figure 1a are examples. The communication system may include all or part of the entities in Figure 1a, or may include other entities outside Figure 1a. The number and form of the entities are arbitrary. The connection relationship between the entities is an example. The entities may be connected or disconnected, and the connection may be in any manner, which may be direct or indirect, and may be wired or wireless.

[0149] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication processing methods, and next-generation systems based on and extending these. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0150] In order to improve coverage at the cell edge and provide a more balanced quality of service within the service area, multi-transmission point (TRP) collaboration, or simply multi-point collaboration, remains an important technical means in the NR system. From the perspective of network morphology, network deployment with a large number of distributed access points and centralized baseband processing will be more conducive to providing a balanced user experience rate and significantly reduce the latency and signaling overhead caused by handover. As the frequency band increases, relatively dense access point deployment is also required to ensure network coverage. In high-frequency bands, as the integration of active antenna equipment increases, modular active antenna arrays will be more likely to be used.

[0151] In some embodiments, the antenna array of each TRP can be divided into several relatively independent antenna panels, so the shape and number of ports of the entire array can be flexibly adjusted according to the deployment scenario and business needs. The antenna panels or TRPs can also be connected by optical fiber for more flexible distributed deployment. In the millimeter wave band, as the wavelength decreases, the blocking effect caused by obstacles such as human bodies or vehicles will be more significant. In this case, from the perspective of ensuring the robustness of the link connection, it is also possible to utilize the collaboration between multiple TRPs or panels to transmit or receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect.

[0152] In some embodiments, based on the mapping relationship between the transmitted signal streams to multiple TRPs or panels, multi-point coordinated transmission technology can be divided into coherent transmission and incoherent transmission. In coherent transmission, each data layer is mapped to multiple TRPs or panels through a weighted vector. In incoherent transmission, each data stream is only mapped to some TRPs or panels. Coherent transmission has higher requirements for synchronization between transmission points and the transmission capacity of the backhaul link, and is therefore more sensitive to many non-ideal factors in real-world deployment conditions. Relatively speaking, incoherent transmission is less affected by the above factors.

[0153] In some embodiments, simultaneous transmission enhancement based on multiple TRPs (MTRPs) of a multi-panel terminal is considered for PUSCH or Physical Uplink Control Channel (PUCCH).

[0154] For PUSCH or Physical Downlink Shared Channel (PDSCH), the data layer of data transmission corresponds to DMRS. The DMRS design of data channels (such as PDSCH or PUSCH) in NR systems mainly includes the following two types:

[0155] Front-load DMRS: Within each scheduling time unit, the first DMRS appearance should be as close as possible to the scheduling start point. The use of front-load DMRS helps the receiver quickly estimate the channel and perform reception detection, which is important for reducing latency and supporting self-contained architectures. Depending on the total number of orthogonal DMRS ports, front-load DMRS can occupy up to two consecutive orthogonal frequency division multiplexing (OFDM) symbols.

[0156] Additional DMRS: For low-mobility scenarios, front-load DMRS can achieve channel estimation performance that meets demodulation requirements with low overhead. However, the mobile speed considered by the NR system can reach up to 500 km / h. Faced with such a large dynamic range of mobility, in addition to front-load DMRS, in medium-speed or high-speed scenarios, more DMRS symbols need to be inserted within the scheduling duration to meet the estimation accuracy of the time-varying channel. To address this problem, the NR system adopts a DMRS structure that combines front-load DMRS with additional DMRS with configurable time-domain density. Each set of additional DMRS patterns is a repetition of the front-load DMRS.

[0157] In some embodiments, if additional DMRS is present within each scheduling time unit, the pattern of each additional DMRS group is consistent with the front-load DMRS. Therefore, the front-load DMRS pattern design is the basis for DMRS design. Front-load DMRS design is divided into two configuration types: Configuration type 1 (type 1) uses a comb (COMB) + orthogonal cover code (OCC) structure, and configuration type 2 (type 2) is based on a frequency division multiplexing (FDM) + OCC structure.

[0158] In some embodiments, the front-load DMRS patterns of the two configuration types can be seen in Figures 1b to 1e. Figure 1b shows a schematic diagram of the DMRS pattern mapping for one OFDM symbol corresponding to configuration type 1, and Figure 1c shows a schematic diagram of the DMRS pattern mapping for two OFDM symbols corresponding to configuration type 1. Figure 1d shows a schematic diagram of the DMRS pattern mapping for one OFDM symbol corresponding to configuration type 2, and Figure 1e shows a schematic diagram of the DMRS pattern mapping for two OFDM symbols corresponding to configuration type 2. In the figures, t represents the time domain, and f represents the frequency domain.

[0159] Depending on the number of orthogonal ports used for transmission, front-load DMRS can be configured with up to two OFDM symbols. Considering power efficiency, when using two front-load DMRS symbols, Time Domain Orthogonal Cover Codes (TD-OCC) are employed in the time domain, in addition to frequency-domain Circuit Switching (CS) or OCC.

[0160] In some embodiments, similar to front-load DMRS, each additional DMRS group can occupy up to two consecutive DMRS symbols. Depending on the specific use case, up to three additional DMRS groups can be configured in each schedule. The number of additional DMRS groups depends on higher-layer parameter configuration and the specific schedule duration.

[0161] In some embodiments, Tables 1-1 to 1-16 illustrate the DMRS port allocation for different parameter configurations under the cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform. Taking Table 1-1 as an example, Table 1-1 corresponds to DMRS type 1 (dmrs-Type = 1), single symbol (maxLength = 1), and single stream transmission (rank = 1), and determines the mapping relationship of the DMRS port. The meaning of the parameters in the following Tables 1-2 to 1-16 can be referred to Table 1-1 and will not be repeated here.

[0162] Table 1-1 Antenna port(s), transform precoder disabled, dmrs-Type = 1, maxLength = 1, rank = 1

[0163] Among them, CDM stands for Code Division Multiplexing.

[0164] Table 1-2 Antenna ports, conversion precoding disabled, dmrs-Type = 1, maxLength = 1, rank = 2

[0165] Table 1-3 Antenna ports, conversion precoding disabled, dmrs-Type = 1, maxLength = 1, rank = 3

[0166] Table 1-4 Antenna port, conversion precoding disabled, dmrs-Type = 1, maxLength = 1, rank = 4

[0167] Table 1-5 Antenna port, conversion precoding disabled, dmrs-Type = 1, maxLength = 2, rank = 1

[0168] Table 1-6 Antenna port, conversion precoding disabled, dmrs-Type = 1, maxLength = 2, rank = 2

[0169] Table 1-7 Antenna port, conversion precoding disabled, dmrs-Type = 1, maxLength = 2, rank = 3

[0170] Table 1-8 Antenna port, conversion precoding disabled, dmrs-Type = 1, maxLength = 2, rank = 4

[0171] Table 1-9 Antenna port, conversion precoding disabled, dmrs-Type = 2, maxLength = 1, rank = 1

[0172] Table 1-10 Antenna port, conversion precoding disabled, dmrs-Type = 2, maxLength = 1, rank = 2

[0173] Table 1-11 Antenna ports, conversion precoding disabled, dmrs-Type = 2, maxLength = 1, rank = 3

[0174] Table 1-12 Antenna ports, conversion precoding disabled, dmrs-Type = 2, maxLength = 1, rank = 4

[0175] Table 1-13 Antenna port, conversion precoding disabled, dmrs-Type = 2, maxLength = 2, rank = 1

[0176] Table 1-14 Antenna port, conversion precoding disabled, dmrs-Type = 2, maxLength = 2, rank = 2

[0177] Table 1-15 Antenna port, conversion precoding disabled, dmrs-Type = 2, maxLength = 2, rank = 3

[0178] Table 1-16 Antenna port, conversion precoding disabled, dmrs-Type = 2, maxLength = 2, rank = 4

[0179] In some embodiments of the present disclosure, PN is caused by the destruction of the orthogonality of each subcarrier in the OFDM system by the execution of the local oscillator (LO). This causes CPE, which rotates the modulation constellation at a fixed angle and causes inter-carrier interference (ICI), resulting in scattering of constellation points. This situation is more obvious at high frequencies. Due to the greater impact of CPE, compensation for CPE is mainly considered in NR. PTRS is used to estimate CPE.

[0180] The NR system supports 1-port, 2-port, 4-port and 8-port PUSCH. The terminal of the related technology is equipped with only 1 or 2 Tx antennas and supports partial and non-coherent transmission (PC) and NC.

[0181] In some embodiments, enhanced UL performance requires a terminal with higher transmission capabilities, such as the terminal 101 equipped with three transmit antennas in the disclosed embodiment. For enhanced terminals 101 with higher transmission capabilities, the maximum supported data layers are three, necessitating enhanced PTRS transmission. Furthermore, the PTRS transmission method must be considered when configuring repeated PUSCH transmissions. Furthermore, since the terminal 101 with three transmit antennas uses NC transmission, the DMRS port grouping method used in PC transmission may not be applicable.

[0182] The embodiments of the present disclosure provide a method for sending PTRS in a scenario where PUSCH repeated transmission is configured.

[0183] FIG2a is an interactive diagram illustrating a method for transmitting a phase tracking reference signal (PTRS) according to an embodiment of the present disclosure. As shown in FIG2a , an embodiment of the present disclosure relates to a method for transmitting a PTRS, the method comprising:

[0184] In step S2101, the terminal 101 determines the actual number of PTRS ports in the first TO and the DMRS ports associated with the PTRS ports.

[0185] Optionally, in the first TO, based on the determined actual number of PTRS ports, the terminal 101 determines a DMRS port group associated with each PTRS port, and determines a DMRS port associated with the PTRS port in the associated DMRS port group.

[0186] Optionally, the terminal 101 is a terminal with three transmit antennas or a 3Tx terminal. This type of terminal 101 has an enhanced transmit channel, and the receive antenna (Rx) configuration can be 4 receive antennas (Rx), 6Rx, or 8Rx. For example, Figure 2c shows the terminal RF architecture for 3Tx and 4Rx (3T4R); Figure 2d shows the terminal RF architecture for 3Tx and 6Rx (3T6R); and Figures 2e to 2f show the terminal RF architecture for 3Tx and 8Rx (3T8R).

[0187] Optionally, when the terminal 101 is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than 1, the PUSCH corresponds to multiple TOs. The step S2101 determines the DMRS port associated with the PTRS port in the first TO.

[0188] Optionally, the DMRS port is located in a DMRS port group. For example, still taking the first TO as an example, the PTRS port in the first TO is associated with a DMRS port group, and the DMRS port associated with the PTRS port is further determined in the associated DMRS port group.

[0189] It is worth noting that PTRS is used to track the phase noise introduced by the local oscillator in the gNB and UE, and thus used for CPE estimation. PTRS can be configured by the network to the terminal 101 as a UE-specific reference signal to enhance signal coverage and improve signal quality. The number of PTRS ports is related to the number of phase noise sources. When there are multiple independent phase noise sources, each phase noise source requires a PTRS port for phase estimation. Among them, PTRS can be regarded as an extension of DMRS and is associated with DMRS; for example, the two use the same precoding, have port correlation, orthogonal sequence generation, or quasi co-location (QCL) relationship, etc.

[0190] Optionally, the term "port" involved in the embodiments of the present disclosure may also adopt "antenna port", for example, the PTRS port may also adopt the PTRS antenna port, the DMRS port may also adopt the DMRS antenna port, and so on.

[0191] In some embodiments, the implementation of step S2101 includes multiple aspects, as described in the following embodiments:

[0192] In the example of the first aspect, the maximum number of PTRS ports supported by the terminal 101 with 3 Tx antennas is configured by the network device 102 , and the actual number of PTRS ports determined by the terminal 101 should be less than or equal to the maximum number of ports.

[0193] In an example of this aspect, the network device 102 may send configuration information, such as PTRS configuration (PTRS-UplinkConfig), via a Radio Resource Control (RRC) message, see the following PTRS configuration information element (IE), in which the maximum number of ports can be obtained by configuring maxNrofPorts in the high-level parameter PTRS-UplinkConfig to 'n1' or 'n2', where 'n1' corresponds to the maximum number of ports being configured as 1, and 'n2' corresponds to the maximum number of ports being configured as 2.

[0194] In addition, the network device 101 can also control whether the terminal 101 transmits PTRS in the uplink through configuration. For example, in the DMRS configuration (DMRS-UplinkConfig), see the following DMRS configuration IE. If the phaseTrackingRS is not configured in the high-level parameter DMRS-UplinkConfig, the terminal 101 does not transmit PTRS in the uplink.

[0195] In the example of the second aspect, the terminal 101 needs to determine the actual number of PTRS ports, and for the actual PTRS ports under the actual number of ports, it needs to further determine the associated DMRS ports, and perform PTRS transmission according to the associated DMRS ports.

[0196] In this example, the terminal 101 may determine the actual number of ports in different ways:

[0197] In an optional first manner, the actual number of PTRS ports is determined according to a Transmission Precoding Matrix Indicator (TPMI) and a Sounding Reference Signal (SRS) or a PUSCH port grouping.

[0198] The grouping method of DMRS port grouping is the same as that of SRS port grouping or PUSCH port grouping. For example, taking ports 0, 1, and 2 as an example, SRS port grouping or PUSCH port grouping may include the following methods:

[0199] Same as the conventional method, such as ports {0, 2} are a group, {1} is a group; or,

[0200] Use other grouping methods, such as {0, 1} in one group and {2} in another group; or {0} in one group and {1, 2} in another group;

[0201] Alternatively, the grouping mode may be predefined by a protocol or configured by a network device.

[0202] There is an association or correspondence between the DMRS port group and the SRS port group or the PUSCH port group, and the DMRS port group corresponding to the SRS port group or the PUSCH port group can be determined. The name of the DMRS port group can also be replaced by "DMRS port group", which is for illustration only and is used to indicate a group of DMRS ports; the name of the SRS port group can also be replaced by "SRS port group", which is for illustration only and is used to indicate a group of SRS ports; and the name of the PUSCH port group can also be replaced by "PUSCH port group", which is for illustration only and is used to indicate a group of PUSCH ports.

[0203] For PC and NC uplink transmissions in the codebook-based uplink PUSCH transmission mode, if the Sounding Reference Signal Resource Indicator (SRI) selects or RRC configures an SRS resource, and the different SRS ports in the SRS resource come from panels using different crystal oscillators, two PTRS ports are required. If SRI selects only one SRS resource, if the maximum number of PTRS ports is 1, then one PTRS port is used to transmit the corresponding SRS resource. When the maximum number of PTRS ports configured is 2, the actual number of PTRS ports needs to be determined in conjunction with the TPMI.

[0204] The rows in the TPMI matrix correspond to the number of ports, and the columns correspond to the data layers. The number of data layers or the number of layers can be indicated by the number of transmission layers (rank) or by including a transmission layer indication (Transmission Rank Indication, TRI; or Rank Indication, RI). Taking the SRS port grouping as an example, SRS ports 0, 1, and 2 are divided into two groups, {0,1} and {2}, respectively. The SRS port group {0,1} shares PTRS port 0, and the SRS port group {2} shares PTRS port 1. The first row of the TPMI matrix corresponds to SRS port 0, the second row corresponds to SRS port 1, and the third row corresponds to SRS port 2. It should be noted that PUSCH transmission uses the same SRS port, so the SRS port here can also be equivalent to the PUSCH port.

[0205] If the data layer is indicated as layer 1 by TPMI from an SRS port group, only one PTRS port needs to be scheduled.

[0206] In an optional example, when rank=1, the TPMI corresponds to a matrix with 3 rows and 1 column. The matrix form can refer to any of the following: In the three matrix forms with Rank=1, the data layer actually transmitted is 1, and one PTRS port needs to be scheduled, that is, the actual number of PTRS ports is 1.

[0207] When the number of PUSCH transmission layers is greater than 1 and the maximum number of ports is 2, the number of SRS port groups or PUSCH port groups corresponding to different TPMI data layers is different, and the actual number of PTRS ports determined by terminal 101 is different. For example, if all TPMI data layers are transmitted through one SRS port group or PUSCH port group, the actual number of PTRS ports is 1. For another example, if all TPMI data layers are transmitted through two SRS port groups or PUSCH port groups, the actual number of PTRS ports is 2. The above-mentioned SRS port group or PUSCH port group can also be replaced with a DMRS port group.

[0208] In an optional example, when rank = 2, the TPMI corresponds to a matrix with 3 rows and 2 columns. The matrix form can refer to any of the following: Among the three matrix forms of Rank=2, Corresponding to SRS port 0 and SRS port 1, one SRS port group is involved, so the actual number of PTRS ports is 1; Corresponding to SRS port 1 and SRS port 2, Corresponding to SRS port 0 and SRS port 2, and Both involve 2 SRS port groups, so the actual number of PTRS ports is 2.

[0209] In another optional example, when rank=3, TPMI corresponds to a matrix with 3 rows and 3 columns, such as The first row corresponds to SRS port 0, the second row indicates SRS port 1, and the third row indicates SRS port 2, involving 2 SRS port groups. That is, the 3 data layers of TPMI are transmitted through 2 SRS port groups, so the actual number of PTRS is 2.

[0210] In an optional second embodiment, the actual number of ports of the PTRS is predefined or defaulted; or, the actual number of ports of the PTRS is determined according to configuration information. For example, the terminal 101 may define or fix the actual number of ports of the PTRS based on a protocol, or fix the actual number of ports of the PTRS according to the maximum number of ports in the configuration information.

[0211] In the example of the third aspect, after determining the actual number of ports, the terminal 101 needs to determine the DMRS port associated with the actual PTRS port.

[0212] In this example, the terminal 101 may determine the DMRS port associated with the PTRS port based on a PTRS-DMRS association indication field.

[0213] Optionally, the network device 102 may send downlink control information (DCI) to the terminal 101. The DCI may include a PTRS-DMRS association indication field. Optionally, the DCI may also include parameters such as TPMI or rank.

[0214] In an optional first manner, the bit width of the PTRS-DMRS association indication field may be 0. When the maximum number of ports is 1 and rank = 1, terminal 101 determines that the actual number of PTRS ports is 1, and the one actual PTRS port is associated with one allocated DMRS port. When the maximum number of ports is 2 and rank = 1, terminal 101 determines that the actual number of PTRS ports is 1, and the one actual PTRS port is associated with one allocated DMRS port.

[0215] In the optional second mode, when the maximum number of ports is 1 and rank>1, the actual number of PTRS ports is 1. The bit width of the PTRS-DMRS association indication field is fixed, such as fixed to 2 bits. When the code point of the 2 bits is different, the DMRS port associated with the actual PTRS port is different. As shown in Table 2-1:

[0216] Table 2-1

[0217] When the maximum number of ports is 1 and rank = 2, the actual number of PTRS ports is 1. The bit width of the PTRS-DMRS association indication field can be 1, and the associated DMRS port is determined based on the 1-bit code point. As shown in Table 2-2:

[0218] Table 2-2

[0219] When the maximum number of ports is 1 and rank=3, the actual number of PTRS ports is 1. The bit width of the PTRS-DMRS association indication field may be 2, and the associated DMRS port is determined according to the 2-bit code point.

[0220] In an optional third manner, the maximum number of ports is 2 and rank = 2, and the actual number of PTRS ports is 2. The two actual PTRS ports are recorded as PTRS port 0 and PTRS port 1, and their associated DMRS ports are determined respectively. For example, the network side divides the DMRS ports corresponding to the SRS resources into two groups, respectively indicating the association relationship between PTRS port 0 and the DMRS port, and the association relationship between PTRS port 1 and the DMRS port.

[0221] Among them, the PTRS-DMRS association indication field can be used to indicate the DMRS port associated with PTRS port 0 or PTRS port 1. For example, taking the PTRS-DMRS association indication field occupying 1 bit to indicate the DMRS port associated with PTRS port 0 as an example, refer to Table 2-3, and determine the DMRS port associated with PTRS port 0 based on different code points:

[0222] Table 2-3

[0223] For example, the PTRS-DMRS association indication field occupies 2 bits and indicates the DMRS port associated with PTRS port 0. As shown in Table 2-4, the DMRS port associated with PTRS port 0 is determined based on different code points:

[0224] Table 2-4

[0225] Alternatively, in another optional example, the DMRS port associated with PTRS port 0 is indicated by the upper 1 bit (MSB) of the 2 bits, and the DMRS port associated with PTRS port 1 is indicated by the lower 1 bit (LSB) of the 2 bits, as shown in the mapping of Table 2-5:

[0226] Table 2-5

[0227] In an optional fourth mode, the maximum number of ports is 2 and rank=2, and the actual number of PTRS ports is 1. The bit width of the PTRS-DMRS association indication field is 1 or 2, and the DMRS port associated with the actual PTRS port is indicated by different code points of the information indication field.

[0228] In an optional fifth manner, the maximum number of ports is 2 and rank=3, and the actual number of ports of PTRS is 2.

[0229] Optionally, the PTRS-DMRS association indication field indicates an SRS port group or PUSCH port group associated with any actual PTRS port, and the DMRS port in the corresponding DMRS port group is determined based on the SRS port group or PUSCH port group. The two actual PTRS ports are still recorded as PTRS port 0 and PTRS port 1, and any PTRS port can be either PTRS port 0 or PTRS port 1.

[0230] Among them, by indicating the SRS port group or PUSCH port group associated with the PTRS port, the corresponding DMRS port group can be indirectly determined, and then the DMRS port associated in the associated DMRS port group can be determined. For example, the grouping format of the SRS port group can include any of the following: {{0, 1}, 2}, {0, {1, 2}}, {{0, 2}, 1}. Taking {{0, 1}, 2} as an example, in this grouping format, {0, 1} is a group and 2 is a group.

[0231] The bit width of the PTRS-DMRS association indication field is 1 or 2, and different code points of the information indication field are used to indicate the port in the SRS port group or the port in the PUSCH group associated with PTRS port 0 or PTRS port 1. When indicated by 1 bit, the 1-bit code point can be used to indicate the port in the SRS port group or the port in the PUSCH group associated with PTRS port 0. When indicated by 2 bits, the 2-bit code point can be used to indicate the port in the SRS port group or the port in the PUSCH group associated with PTRS port 0.

[0232] Optionally, the PTRS-DMRS association indication field is used to indicate the DMRS port associated with each PTRS port in the corresponding DMRS port group, such as indicating the DMRS ports associated with PTRS port 0 and PTRS port 1. For example, the bit width of the PTRS-DMRS association indication field is 4, and the DMRS port associated with PTRS port 0 is indicated by the upper 2 bits (MSB), and the DMRS port associated with PTRS port 1 is indicated by the lower 2 bits (LSB).

[0233] Optionally, the PTRS-DMRS association indication field includes a first part and a second part, the first part being used to indicate the DMRS port associated with PTRS port 0 in the corresponding DMRS port group, and the second part being used to indicate the DMRS port associated with PTRS port 1 in the corresponding DMRS port group, and the first part and the second part having different numbers of bits. For example, the bit width of the PTRS-DMRS association indication field is 3, the first part includes the two most significant bits (MSBs), and the second part includes one least significant bit (LSB); the DMRS port associated with PTRS port 0 is indicated by different code points in the first part, and the DMRS port associated with PTRS port 1 among the remaining DMRS ports is indicated by different code points in the second part.

[0234] In an optional sixth method, the PTRS port is associated with a set DMRS port, and the set DMRS port is predefined by the protocol or configured by the network device through signaling; wherein, the DCI does not include a PTRS-DMRS association indication field or the bit width of the PTRS-DMRS association indication field is 0.

[0235] Optionally, if the maximum number of ports is 1 and rank>1, the actual number of PTRS ports is 1, and the one actual PTRS port can be fixedly associated with the set DMRS port. Alternatively, if the maximum number of ports is 2 and rank>1, the actual number of PTRS ports is 1, and the one actual PTRS port can be fixedly associated with the set DMRS port. The set DMRS port is the first allocated DMRS port in the DMRS port group associated with the PTRS port.

[0236] Optionally, the maximum number of ports is 2 and rank = 2, the actual number of PTRS ports is 2, the set DMRS port associated with one actual PTRS port (PTRS port 0) is the first allocated DMRS port in the corresponding DMRS port group, and the set DMRS port associated with another actual PTRS port (PTRS port 1) is the second allocated DMRS port in the corresponding DMRS port group.

[0237] Optionally, the maximum number of ports is 2 and rank = 3, the actual number of PTRS ports is 2, and the set DMRS ports associated with the two actual PTRS ports are both: the first DMRS port in the DMRS port group corresponding to the SRS port group or the PUSCH port group. Still taking the SRS port group including {{0, 1}, 2}, {0, {1, 2}}, {{0, 2}, 1} as an example, PTRS port 0 and PTRS port 1 can both be associated with the corresponding first DMRS port in the group.

[0238] Step S2102: Terminal 101 sends PTRS based on the DMRS port in the first TO.

[0239] Optionally, based on the different numbers of actual PTRS ports, DMRS ports associated with the actual PTRS ports may be determined respectively, so as to send the PTRS based on the associated DMRS ports.

[0240] Optionally, when the actual number of PTRS ports is 1, PTRS is sent in each TO based on one DMRS port associated with one PTRS port; or, when the actual number of PTRS ports is 2, PTRS is sent in each TO based on DMRS ports respectively associated with two PTRS ports.

[0241] For example, when the actual number of ports is 1, in the first TO, the PTRS is sent based on a DMRS port associated with the actual PTRS port.

[0242] For another example, when the actual number of ports is 2, the two actual PTRS ports are recorded as PTRS port 0 and PTRS port 1. In the first TO, PTRS is sent based on the DMRS port associated with PTRS port 0, and PTRS is sent based on the DMRS port associated with PTRS port 1.

[0243] In some embodiments, the network device 102 receives the PTRS correspondingly in the first TO to perform phase noise estimation.

[0244] In step S2103 , the PTRS port in each TO after the first TO is associated with the same DMRS port as the PTRS port in the first TO, and the terminal 101 sends the PTRS in each TO respectively using the same precoding as the DMRS port.

[0245] Optionally, for example, if the DMRS port associated with the PTRS port in the first TO is DMRS port 0, then for other TOs, it can be considered that the PTRS port in each TO is associated with DMRS port 0. In each TO, the PTRS is sent using the same precoding as DMRS port 0.

[0246] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", and "field" can be used interchangeably.

[0247] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0248] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0249] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0250] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0251] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0252] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "some", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "some A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, some A, any A, or first A, etc., but not limited to this.

[0253] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0254] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0255] The method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2103.

[0256] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 a .

[0257] FIG2b is an interactive diagram of a PTRS sending method according to an embodiment of the present disclosure. As shown in FIG2b, an embodiment of the present disclosure relates to a PTRS sending method, the method comprising:

[0258] In step S2201, the terminal 101 determines the actual number of PTRS ports in the first TO and the DMRS ports associated with the PTRS ports.

[0259] In some embodiments, the implementation of step S2201 can refer to the implementation of step S2101 and will not be repeated here.

[0260] In step S2202, the terminal 101 sends a PTRS based on the DMRS port in the first TO.

[0261] In some embodiments, the implementation of step S2202 can refer to the implementation of step S2101 and will not be repeated here.

[0262] Step S2203 : In the DMRS port group, the terminal 101 starts with the next DMRS port corresponding to the first TO, and cyclically maps in the DMRS port group to determine the DMRS port corresponding to each valid TO after the first TO.

[0263] Optionally, a DMRS port group includes multiple DMRS ports, and the multiple DMRS ports satisfy a set order. The set order can be ascending or descending, and the indexes of different DMRS ports in the DMRS port group are order indexes, not actual indices of the DMRS ports. For example, for the DMRS port group {0, 1}, 0 represents the first DMRS port in the group, and 1 represents the second DMRS port in the group.

[0264] Optionally, when the actual number of PTRS ports is 1, the DMRS port group includes all allocated DMRS ports; for example, when the number of transmission layers is 3, based on all actually allocated DMRS ports 0, 1, and 2, the DMRS port group is recorded as {0, 1, 2}. Alternatively, when the actual number of PTRS ports is 2, each of the two PTRS ports has an associated DMRS port group; for example, when rank = 3, the two actual PTRS ports are recorded as PTRS port 0 and PTRS port 1, respectively, where DMRS ports 0, 1, and 2 belong to two DMRS port groups, which can be {0, 2} and {1}, where the DMRS port group corresponding to PTRS port 0 is {0, 2}, and the DMRS port group corresponding to PTRS port 1 is {1}.

[0265] In one example, when rank = 3 and the maximum number of PTRS ports is 1 or 2, when it is determined that the actual number of PTRS ports is 1, based on step S22101, the DMRS port group associated with the actual PTRS port (denoted as PTRS port 0) in the first TO is {0, 1, 2}, and the associated DMRS port is DMRS port 0, then its next DMRS port is DMRS port 1. The cyclic mapping in this step can start with DMRS port 1 and cyclically map in the group {0, 1, 2} in sequence until the DMRS port associated with each TO in all TOs is determined, as shown in Table 2-6:

[0266] Table 2-6

[0267] Note: Each TO in the table is a valid TO.

[0268] In another example, when rank = 3 and the maximum number of PTRS ports is 2, when it is confirmed that the actual number of PTRS ports is 2, the DMRS ports associated with the two actual PTRS ports (denoted as PTRS port 0 and PTRS port 1) are determined in each TO, such as by cyclic mapping in the DMRS port groups associated with the two PTRS ports. Based on step S22101, it is determined that the DMRS port group associated with PTRS port 0 in the first TO is {0, 1}, and the associated DMRS port is DMRS port 0; the DMRS port group associated with PTRS port 1 in the first TO is {2}, and the associated DMRS port is DMRS port 2. For the cyclic mapping of PTRS port 0, start with DMRS port 1 in the DMRS port group {0, 1} and circulate in the group {0, 1} until the DMRS port associated with PTRS port 0 in each TO in all TOs is determined; since there is only one DMRS port in the DMRS port group associated with PTRS port 1, the DMRS port associated with PTRS port 1 in different TOs is DMRS port 2, as shown in Table 2-7:

[0269] Table 2-7

[0270] Note: Each TO in the table is a valid TO.

[0271] In some embodiments, the effective TO is a nominal TO or an actual TO. The following describes two TOs in conjunction with the type of PUSCH retransmission.

[0272] Optionally, PUSCH retransmissions include two types: Type A and Type B. Optionally, when the retransmission type is Type A, the multiple TOs are located in different time slots, and the different time slots are multiple consecutive time slots; or, when the retransmission type is Type B, the multiple TOs are located in the same or different time slots, and the multiple TOs are allowed to cross the boundaries of adjacent time slots.

[0273] As shown in Figure 2g, Type A is slot-aggregated PUSCH transmission, which is not suitable for situations with very low latency requirements and high reliability. A PUSCH is transmitted in K consecutive slots, corresponding to K TOs. Transmission begins at the Sth symbol in the starting slot and continues for L symbols in each TO. Furthermore, S + L cannot exceed the slot boundary. The number 2repetitions in the figure indicates two retransmissions, meaning the number of repeated transmissions is two.

[0274] Referring to Figures 2h to 2j, Type B supports a PUSCH repetition scheme in mini-slot units and allows PUSCH transmission to span time slots to further reduce latency. In the time domain, a PUSCH starts transmission at the Sth symbol in the starting time slot and continuously sends K TOs, where K is the nominal number of transmissions (nominal repetition); each TO occupies L symbols continuously (back-to-back), and transmission S+L can cross time slot boundaries. As shown in Figures 2h to 2j, when a TO crosses a time slot boundary, the transmission is re-divided, corresponding to the actual number of transmissions (actual repetition) K'. In Figure 2h, K = 2, L = 4, S = 4; in Figure 2i, K = 4, L = 4, S = 4; in Figure 2j, K = 1, L = 14, S = 4.

[0275] Optionally, for the entire transmission of Type B, time slot L*K represents the length of the time window for PUSCH transmission, and DL symbols in the window will be discarded and not used for PUSCH transmission. The network device 102 can indicate, via the Slot Format Indication (SFI), that the semi-static flexible symbols (Flexible) are dynamic UL symbols or dynamic DL symbols. Therefore, the semi-static flexible symbols may be usable or unusable for PUSCH. If there are unusable symbols, they need to be discarded and then transmitted on the remaining usable symbols.

[0276] Optionally, the transmission parameters of type A and type B, such as valid S and L combinations, can be referred to as shown in Table 2-8, and the definition of the redundant version (RV) of PUSCH transmission can be referred to as shown in Table 2-9.

[0277] Table 2-8

[0278] Table 2-9

[0279] For Type A repetitions, the RV mapping is directly mapped to the TO corresponding to all nominal repetitions (i.e., the nominal TO), and the RV field of the DCI indicates the initial value of the RV sequence. For Type B repetitions, the RV mapping is directly mapped to the TO corresponding to all actual repetitions (i.e., the actual TO), and the RV field of the DCI indicates the initial value of the RV sequence.

[0280] Optionally, in conjunction with the description of the aforementioned embodiment, the nominal TO may be divided into actual TOs. PTRS transmission may be performed separately according to the actual TOs. For example, after the actual number of PTRS ports is determined, each TO in all actual TOs of a scheduled PUSCH may correspond to a PTRS transmission corresponding to the actual number of PTRS ports.

[0281] Optionally, when there is no symbol conflict between uplink transmission and downlink transmission in the same TO and no TO discard occurs, the effective TO is the actual TO or nominal TO among multiple TOs; or, when there is a symbol conflict between uplink transmission and downlink transmission in the same TO and TO discard occurs, the effective TO is the actual TO among multiple TOs.

[0282] For example, if an uplink symbol conflict occurs in the nominal TO, the corresponding nominal TO is discarded for higher priority channel or signal transmission, or if a DL symbol or flexible symbol is configured as a DL symbol. As shown in Figure 2k, of the four nominal TOs, three are actual TOs that can be used for actual transmission, meaning the actual number of TOs is three. The second transmitted TO is discarded.

[0283] In some embodiments, in the process of determining the DMRS port corresponding to each valid TO in the DMRS port group, the DMRS port associated with the PTRS port in the nominal TO that has symbol collision and is discarded is discarded or retained.

[0284] The examples in Table 2-6 and Table 2-7 can still be combined. Table 2-6 and Table 2-7 do not indicate the abandonment of DMRS ports. To facilitate understanding of the process of determining DMRS ports, two examples are listed based on Figure 2k:

[0285] In one example, when rank = 3 and the maximum number of PTRS ports is 1 or 2, when the actual number of PTRS ports is determined to be 1, the associated DMRS port group of this actual PTRS port (denoted as PTRS port 0) is determined to be {0, 1, 2} in the first TO, and the associated DMRS port is DMRS port 0. If there are no conflicting symbols or no discarded TOs, the associated DMRS ports in other TOs can still be determined by referring to the mapping method in Table 2-6.

[0286] In this example, if the second TO has a conflicting symbol, the method for determining the DMRS port associated with the PTRS port in other TOs can be seen in Table 2-10. Table 2-10 illustrates two methods. In Method 1, the DMRS port associated with the second TO in conflict is discarded, or the second TO is discarded, that is, the DMRS port associated with the second TO is no longer determined; when the third TO is mapped in the group, the order of the second TO is replaced, that is, the DMRS port associated with the third TO is DMRS port 1. In Method 2, the DMRS port associated with the second TO in conflict is retained, and on this basis, the DMRS port associated with the third TO is further determined to be DMRS port 2. In other words, when determining the DMRS port associated with the PTRS port in the third TO, the DMRS port associated with the PTRS port in the second TO needs to be skipped.

[0287] In both methods, whether or not the DMRS port associated with the second TO is retained, it affects the DMRS ports associated with other TOs, but in both methods, the second TO does not send PTRS.

[0288] Table 2-10

[0289] In another example, when rank = 3 and the maximum number of PTRS ports is 2, when the actual number of PTRS ports is confirmed to be 2, the DMRS port group associated with PTRS port 0 in the first TO is {0, 1}, and the associated DMRS port is DMRS port 0; the DMRS port group associated with PTRS port 1 in the first TO is {2}, and the associated DMRS port is DMRS port 2. If there are no conflicting symbols or no discarded TOs, the DMRS ports associated with other TOs can still be determined by referring to the mapping method in Table 2-7.

[0290] In this example, if there is a conflicting symbol in the second TO, the method for determining the DMRS port associated with the PTRS port in other TOs can be found in Table 2-11. The DMRS port associated with PTRS port 0 in different TOs is determined according to method 1 and method 2 respectively; since there is only one DMRS port in the DMRS port group associated with PTRS port 1, the DMRS port associated with PTRS port 1 in different TOs is all DMRS port 2, and PTRS sending will not be performed in the second TO where the conflict occurs.

[0291] Table 2-11

[0292] Step S2204: Starting from the first actual TO after the first TO, the terminal 101 sends PTRS in each actual TO according to the associated DMRS port.

[0293] In some embodiments, the DMRS port associated with the PTRS port in each actual TO is determined in step S2203, as shown in Tables 2-6, 2-7, 2-10, and 2-11. For TOs with symbol conflicts, such as the second TO in the aforementioned embodiment, PTRS transmission is not performed.

[0294] Optionally, when the actual number of PTRS ports is 1, PTRS is sent in each TO based on one DMRS port associated with one PTRS port; or, when the actual number of PTRS ports is 2, PTRS is sent in each TO based on DMRS ports respectively associated with two PTRS ports.

[0295] The method involved in the embodiment of the present disclosure may include at least one of steps S2201 to S2204.

[0296] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 b .

[0297] FIG3 is a schematic diagram of a PTRS transmission method according to an embodiment of the present disclosure. As shown in FIG3 , the embodiment of the present disclosure relates to a PTRS transmission method, which is executed by a terminal 101 and includes:

[0298] Step S3101: Determine the actual number of PTRS ports in a first TO among multiple TOs of PUSCH and the DMRS ports associated with the PTRS ports.

[0299] In some embodiments, the implementation of step S3101 can refer to the implementation of step S2101 and will not be repeated here.

[0300] Step S3102: Send PTRS based on the DMRS port in the first TO.

[0301] In some embodiments, the implementation of step S3102 can refer to the implementation of step S2102 and will not be repeated here.

[0302] Step S3103: In TOs other than the first TO, PTRS is sent according to the DMRS port grouping.

[0303] In some embodiments, the implementation of step S3103 can refer to the implementation of step S2103 and will not be repeated here.

[0304] In some embodiments, the implementation of step S3103 may refer to the implementation of steps S2203 to S2204, which will not be repeated here.

[0305] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 .

[0306] FIG4 is a schematic diagram of a PTRS transmission method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a PTRS transmission method, which is executed by a network device 102 and includes:

[0307] Step S4101: Receive PTRS in the first TO among multiple transmission opportunities TO of PUSCH.

[0308] In some embodiments, the implementation of step S3101 can refer to the implementation of step S2101 and will not be repeated here.

[0309] Step S4102: In TOs other than the first TO, PTRS is received according to the DMRS port grouping.

[0310] In some embodiments, the implementation of step S4102 can refer to the implementation of steps S2102 to S2103, and will not be repeated here.

[0311] In some embodiments, the implementation of step S4102 may refer to the implementation of steps S2202 to S2204 and will not be repeated here.

[0312] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 .

[0313] The method of the embodiment of the present disclosure is used to solve the uplink PTRS transmission scheme of 3Tx terminals in the PUSCH repeated transmission scenario. To facilitate understanding of the embodiment of the present disclosure, some examples are listed below:

[0314] Example 1:

[0315] For 3Tx non-coherent PUSCH transmission, the maximum number of PTRS ports may be configured as 1 or 2.

[0316] Example 2:

[0317] Based on Example 1, if the maximum number of PTRS ports supported by the terminal is 1, you can use:

[0318] Option 1: through PTRS-DMRS association indication.

[0319] When RANK=1, this indicator field is not required; if the number of bits is 0;

[0320] When RANK>1, the following two methods are available:

[0321] Alt.1: For RANK>1, 2 bits are used uniformly for indication;

[0322] Alt.2: For RANK=2, use 1 bit for indication;

[0323] For RANK=3, 2 bits are used for indication.

[0324] Option 2: When RANK>1, association is performed by default.

[0325] Do not use DCI indication, for example, fixedly associate to the first DMRS port.

[0326] For PUSCH transmission configured with Repetition, PTRS cycling is used for different TOs, where:

[0327] Start the loop at the default position, such as the first DMRS port; or

[0328] Configure the port that starts the loop through signaling.

[0329] Example 3:

[0330] Based on Example 1, if the maximum number of PTRS ports is configured as 2, when RANK>1, change the existing rule and use the default fixed number of PTRS ports.

[0331] Option 1: Indicated via PTRS-DMRS indication field.

[0332] When RANK=1, no instruction is required;

[0333] When RANK=2, the following methods are available:

[0334] Case 1: The number of PTRS ports is fixed to 2:

[0335] Alt.1: Use 1 bit for the indication of the first PTRS port;

[0336] Alt.2: 2 bits are uniformly used for the indication of the first PTRS port;

[0337] Alt.3: Default association, no indication.

[0338] Case 2: The number of PTRS ports is fixed to 1:

[0339] Alt.1: Use 1 bit for port indication;

[0340] Alt.2: Use 2 bits to indicate the PTRS port;

[0341] Alt.3: Default association relationship.

[0342] Case 2: The number of PTRS ports is fixed to 1:

[0343] When RANK=3, the number of PTRS ports is fixed to 2 and DCI indication is required:

[0344] Alt.1: The corresponding SRS port grouping is {{0,1},2},{0,{1,2}},{{0,2},1}, then 1 or 2 bits are used for the first

[0345] or indication of the second PTRS port;

[0346] Among them, the port grouping is achieved by reporting the grouping situation by the terminal or by predefined settings;

[0347] Alt.2: Use 2 bits for each PTRS port, for a total of 4 bits;

[0348] Alt.3: Use 2 bits for PTRS port 0 indication and 1 bit for the association in the remaining DMRS ports

[0349] port.

[0350] DCI: 2 bits defined as MSB or LSB.

[0351] Option 2: When RANK>1, association is performed by default and DCI indication is not used.

[0352] When RANK=2,

[0353] Case 1: The number of PTRS ports is fixed at 2.

[0354] By default, PTRS port 0 is associated with the first DMRS port, and PTRS port 1 is associated with

[0355] Second DMRS port;

[0356] Case 2: The number of PTRS ports is fixed to 1.

[0357] Default association relationship, no indication is required, for example, fixed association to the first DMRS port;

[0358] When RANK=3, the number of fixed PTRS ports is 2;

[0359] The corresponding SRS port groups are {{0,1},2},{0,{1,2}},{{0,2},1}, and they all default to the first port in the group.

[0360] DMRS port association;

[0361] For PUSCH transmission configured with Repetition, PTRS cycling is used for different TOs;

[0362] The default DMRS port positions corresponding to different PTRS ports are respectively cycled in the DMRS port groups corresponding to the respective PTRS ports, such as the first DMRS port respectively.

[0363] Configure the port that starts the loop through signaling.

[0364] Optionally, Type A is based on time slot transmission, while Type B can achieve continuous transmission within a time slot. The nominal TO in Type B may be divided into actual TOs. In this embodiment, the PTRS transmission corresponds to the actual TO. After the actual number of PTRS ports is determined, each TO in all valid TOs of a scheduled PUSCH corresponds to the PTRS transmission of the actual number of PTRS ports.

[0365] Optionally, if a symbol conflict occurs between the actual transmission timing and the nominal transmission timing, the corresponding TO may be discarded for the sake of higher priority channel or signal transmission, or if a DL or flexible symbol is configured as a DL symbol. As shown in the following situation, the actual TO corresponds to 4 nominal TOs, of which 3 can be used for the actual TOs of the actual transmission. For example, if the DMRS port is {0, 1, 2} and the actual PTRS port is determined to be 1, then if the indication corresponding to the first TO is port {1}, please refer to Table 2-10 or 2-11, or refer to the following Table 2-12:

[0366] Table 2-12

[0367] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0368] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0369] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned 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 a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit 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), etc.

[0370] Figure 5a is a schematic diagram of the structure of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 5a, the terminal 5100 may include: at least one of: a transceiver module 5101, a processing module 5102, etc. In some embodiments, the processing module 5102 is used to determine the actual number of PTRS ports in the first TO and the DMRS port group associated with each PTRS port in multiple TOs of PUSCH, and determine the DMRS port associated with the PTRS port in the DMRS port group. The transceiver module 5101 is used to send PTRS based on the associated DMRS port in the first TO; and is also used to send PTRS according to the DMRS port group in TOs other than the first TO; wherein the terminal is a terminal with 3 transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of PUSCH and the number of repeated transmissions is greater than 1.

[0371] Optionally, the transceiver module 5101 is configured to execute at least one of the communication steps of sending and / or receiving performed by the terminal 101 in any of the above methods, which are not described in detail here. Optionally, the processing module 5102 is configured to execute at least one of the other steps performed by the terminal 101 in any of the above methods, which are not described in detail here.

[0372] FIG5b is a schematic diagram of the structure of the terminal proposed in an embodiment of the present disclosure. As shown in FIG5b, the network device 5200 may include: at least one of a transceiver module 5201 and a processing module 5202. In some embodiments, the transceiver module 5201 is used to receive PTRS in the first TO among multiple TOs of PUSCH, wherein the PTRS is sent by the terminal based on the actual number of PTRS ports in the first TO and the DMRS ports associated with each PTRS port, and the associated DMRS port is determined in the DMRS port group associated with the PTRS port; the transceiver module 5201 is also used to receive PTRS in TOs other than the first TO according to the DMRS port group; wherein the terminal is a terminal with three transmitting antennas or antenna ports, and the terminal is configured with repeated transmission of PUSCH and the number of repeated transmissions is greater than 1.

[0373] Optionally, the transceiver module 5201 is configured to execute at least one of the communication steps of sending and / or receiving performed by the network device 102 in any of the above methods, which are not described in detail here. Optionally, the processing module 5202 is configured to execute at least one of the other steps performed by the network device 102 in any of the above methods, which are not described in detail here.

[0374] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0375] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0376] Figure 6a is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal implementing any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0377] As shown in Figure 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0378] 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, such as sending and / or receiving, in the above-described method, and the processor 6101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0379] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0380] The communication device 6100 described in the above embodiment may 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 may not be limited by FIG. 6a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0381] FIG6b is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6b , but the present disclosure is not limited thereto.

[0382] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0383] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Alternatively, all or part of memory 6203 may be located external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203 and may be used to receive data from memory 6203 or other devices, or may be used to send data to memory 6203 or other devices. For example, interface circuit 6202 may read data stored in memory 6203 and send the data to processor 6201.

[0384] In some embodiments, the interface circuit 6202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the interface circuit 6202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the interface circuit 6202 performs data exchange between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps.

[0385] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0386] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any 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 thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0387] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0388] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods. Industrial Applicability

[0389] In the scenario where the terminal is configured with repeated transmission of PUSCH, the terminal determines the DMRS ports associated with the PTRS ports in different TOs based on the DMRS port grouping associated with the PTRS port in the first TO, so that the PTRS can be sent separately in the repeatedly transmitted TOs to improve the accuracy of phase noise estimation on the network side.

Claims

1. A method for transmitting a Phase Tracking Reference Signal (PTRS), the method comprising: In multiple Transmission Occasions (TOs) of a Physical Uplink Shared Channel (PUSCH), a terminal determines the actual number of ports of the PTRS in the first TO and the DMRS port groups respectively associated with each PTRS port, and determines the DMRS ports associated with the PTRS ports in the DMRS port groups; The terminal transmits the PTRS based on the associated DMRS ports in the first TO; In TOs other than the first TO, the terminal transmits the PTRS according to the DMRS port groups; Wherein, the terminal is a terminal with 3 transmit antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than 1.

2. The method according to claim 1, wherein The step that in TOs other than the first TO, the terminal transmits the PTRS according to the DMRS port groups includes: The PTRS ports in each TO after the first TO are associated with the same DMRS ports as the PTRS ports in the first TO, and the terminal transmits the PTRS in each TO respectively using the same precoding as the DMRS ports.

3. The method according to claim 1, wherein, The DMRS port groups include multiple DMRS ports, and the multiple DMRS ports satisfy a set order.

4. The method according to claim 3, wherein The step that in TOs other than the first TO, the terminal transmits the PTRS according to the DMRS port groups includes: In the DMRS port groups, starting from the next DMRS port of the DMRS port corresponding to the first TO, cyclically map in the DMRS port groups to respectively determine the DMRS ports corresponding to each valid TO after the first TO; wherein, the valid TO is a nominal TO or an actual TO; Starting from the first actual TO after the first TO, the terminal transmits the PTRS respectively according to the associated DMRS ports in each actual TO.

5. The method according to claim 4, wherein, When there is no symbol conflict between uplink transmission and downlink transmission and no nominal TO is discarded in the same TO, the valid TO is the actual TO or the nominal TO among the multiple TOs; or, When there is a symbol conflict between uplink transmission and downlink transmission and a nominal TO is discarded in the same TO, the valid TO is the actual TO among the multiple TOs.

6. The method according to claim 5, wherein, In the process of determining the DMRS ports corresponding to each valid TO in the DMRS port groups, the DMRS ports associated with the PTRS ports in the nominal TOs with symbol conflict and discarded are discarded or retained.

7. The method according to any one of claims 1 to 6, wherein, When the actual number of ports of the PTRS is 1, the PTRS is transmitted based on one DMRS port associated with one PTRS port in each TO; or, When the actual number of ports of the PTRS is 2, the PTRS is transmitted in each TO based on the DMRS ports respectively associated with two PTRS ports.

8. The method according to any one of claims 1 to 7, wherein when the actual number of ports of the PTRS is 1, the DMRS port group includes all allocated DMRS ports; or when the actual number of ports of the PTRS is 2, each of the two PTRS ports has an associated DMRS port group.

9. The method according to any one of claims 1 to 8, wherein when the type of the repeated transmission is type A, the multiple TOs are respectively located on different time slots, and the different time slots are multiple consecutive time slots; or when the type of the repeated transmission is type B, the multiple TOs are located on the same or different time slots and the multiple TOs are allowed to cross the boundary of adjacent time slots.

10. A method for transmitting PTRS, the method comprising: In multiple transmission opportunities TOs of the PUSCH, a network device receives the PTRS in the first TO, wherein the PTRS is transmitted by a terminal based on the actual number of ports of the PTRS in the first TO and the DMRS ports respectively associated with each PTRS port, and the associated DMRS ports are determined in the DMRS port group associated with the PTRS port; In the TOs other than the first TO, the network device receives the PTRS according to the DMRS port group; wherein the terminal is a terminal equipped with 3 transmit antennas or antenna ports, and the terminal is configured with repeated transmission of the PUSCH and the number of repeated transmissions is greater than 1.

11. The method according to claim 10, wherein, The step that in the TOs other than the first TO, the network device receives the PTRS according to the DMRS port group includes: In each TO after the first TO, the network device receives the PTRS based on the same DMRS ports associated with the PTRS ports in the first TO.

12. The method according to claim 10, wherein the DMRS port group includes multiple DMRS ports, and the multiple DMRS ports satisfy a set order.

13. The method according to claim 12, wherein, The step that in the TOs other than the first TO, the network device receives the PTRS according to the DMRS port group includes: Starting from the first valid TO after the first TO, in each actual TO, the PTRS is received respectively according to the associated DMRS ports; wherein, for each valid TO after the first TO, the corresponding DMRS ports are cyclically determined respectively in the DMRS port group, starting from the next DMRS port of the DMRS ports corresponding to the first TO, and the valid TO is a nominal TO or an actual TO.

14. The method according to claim 13, wherein when there is no symbol conflict between the uplink transmission and the downlink transmission in the same TO and the nominal TO is not discarded, the valid TO is the actual TO or the nominal TO among the multiple TOs; or When there is a symbol conflict between the uplink transmission and the downlink transmission in the same TO and the nominal TO is discarded, the valid TO is the actual TO among the multiple TOs.

15. The method according to claim 14, wherein In the process of determining the DMRS port corresponding to each valid TO in the DMRS port grouping, the DMRS port associated with the PTRS port in the discarded nominal TO with symbol conflict is discarded or retained.

16. The method according to any one of claims 10 to 15, wherein When the actual number of ports of the PTRS is 1, the PTRS is received based on one DMRS port associated with one PTRS port in each TO; or When the actual number of ports of the PTRS is 2, the PTRS is received based on the DMRS ports respectively associated with the two PTRS ports in each TO.

17. The method according to any one of claims 10 to 16, wherein When the actual number of ports of the PTRS is 1, the DMRS port grouping includes all allocable DMRS ports; Or When the actual number of ports of the PTRS is 2, each of the two PTRS ports has an associated DMRS port grouping.

18. The method according to any one of claims 10 to 17, wherein When the type of the retransmission is type A, the multiple TOs are respectively located in different time slots, and the different time slots are multiple consecutive time slots; or When the type of the retransmission is type B, the multiple TOs are located in the same or different time slots and the multiple TOs are allowed to cross the boundary of adjacent time slots.

19. A terminal, comprising: A processing module, configured to determine the actual number of ports of the PTRS in the first TO and the DMRS port grouping respectively associated with each PTRS port among the multiple TOs of the PUSCH, and determine the DMRS port associated with the PTRS port in the DMRS port grouping; A transceiver module, configured to transmit the PTRS based on the associated DMRS port in the first TO; The transceiver module is further configured to, in a TO other than the first TO, perform the transmission of the PTRS according to the DMRS port grouping; Wherein, the terminal is a terminal with 3 transmit antennas or antenna ports, and the terminal is configured with retransmission of the PUSCH and the number of retransmissions is greater than 1.

20. A network device, comprising: A transceiver module, configured to receive the PTRS in the first TO among the multiple TOs of the PUSCH, wherein the PTRS is transmitted by a terminal based on the actual number of ports of the PTRS in the first TO and the DMRS port grouping respectively associated with each PTRS port, and the associated DMRS port is determined in the DMRS port grouping associated with the PTRS port; The transceiver module is further configured to, in a TO other than the first TO, perform the reception of the PTRS according to the DMRS port grouping; Among them, the terminal is a terminal with 3 transmitting antennas or antenna ports, and the terminal is configured for repeated transmission of the PUSCH with the number of repeated transmissions being greater than 1.

21. A terminal, comprising: One or more processors; Among them, the terminal is used to execute the method according to any one of claims 1 to 9.

22. A network device, comprising: One or more processors; Among them, the terminal is used to execute the method according to any one of claims 10 to 18.

23. A communication system, comprising a terminal and a network device, wherein The terminal is configured to implement the method according to any one of claims 1 to 9; The network device is configured to implement the method according to any one of claims 10 to 18.

24. A storage medium, the storage medium stores instructions, wherein When the instructions run on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 9 or 10 to 18.

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