Uplink transmission method, communication device, communication system, and storage medium

Abstract

The present disclosure relates to an uplink transmission method, a communication device, a communication system and a storage medium. The method comprises: determining a first precoding according to first information and CSI-RS resources, wherein the first information comprises channel information between a first terminal and a second terminal, and the first precoding comprises at least one precoding; and sending a PUSCH to a network device according to a second precoding in the first precoding, wherein the second precoding comprises at least one precoding. In the method of the present disclosure, in the non-codebook-based uplink transmission, the first terminal determines the uplink precoding based on the channel information between the first terminal and other terminals, so that in the process of uplink transmission, the interference to the downlink transmission of other terminals can be effectively suppressed, and the communication performance is improved.

Description

Uplink transmission method, communication equipment, communication system and storage medium Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to an uplink transmission method, communication device, communication system and storage medium. Background Technology

[0002] With the rapid development of mobile communication technology, future communication networks will have higher speeds, lower latency, and greater connectivity. Multiple duplex modes will be supported in mobile communication technology to improve the efficiency of time and frequency resource utilization. Summary of the Invention

[0003] In some duplex mode terminals, uplink transmission may interfere with downlink transmission of other terminals.

[0004] This disclosure provides an uplink transmission method, a communication device, a communication system, and a storage medium.

[0005] In a first aspect, embodiments of this disclosure provide an uplink transmission method, executed by a first terminal, the method comprising:

[0006] A first precoding is determined based on first information and Channel State Information-Reference Signal (CSI-RS) resources, wherein the first information includes channel information between the first terminal and the second terminal, and the first precoding includes at least one precoding.

[0007] The Physical Uplink Shared Channel (PUSCH) is sent to the network device according to the second precoding in the first precoding, wherein the second precoding includes at least one precoding.

[0008] Secondly, embodiments of this disclosure provide an uplink transmission method, executed by a network device, the method further comprising:

[0009] Receive a PUSCH sent by a first terminal, wherein the PUSCH is sent according to a second precode in a first precode, the first precode being determined based on first information and CSI-RS resources, the first information including channel information between the first terminal and the second terminal, the first precode including at least one precode, wherein the second precode includes at least one precode.

[0010] Thirdly, embodiments of this disclosure provide a communication device, wherein the communication device is used to perform the method described in the first aspect or the second aspect.

[0011] Fourthly, embodiments of this disclosure provide a communication system, including a first terminal and a network device, wherein,

[0012] The first terminal is configured to implement the method as described in the first aspect;

[0013] The network device is configured to implement the method as described in the second aspect.

[0014] Fifthly, embodiments of this disclosure provide a storage medium storing instructions, wherein...

[0015] When the instructions are executed on the communication device, the communication device causes the communication device to perform the method as described in the first aspect or the second aspect.

[0016] In a sixth aspect, embodiments of this disclosure provide a program product, including at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, they implement the method described in the first aspect or the second aspect.

[0017] In this embodiment of the disclosure, in uplink transmission based on non-codebook, the first terminal determines uplink precoding based on channel information between itself and other terminals. Thus, based on the determined uplink precoding, interference to downlink transmission of other terminals can be effectively suppressed during uplink transmission, thereby improving communication performance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0019] Figure 1A is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0020] Figures 1B to 1D are duplex schematic diagrams provided according to embodiments of the present disclosure;

[0021] Figure 1E is a schematic diagram of interference provided according to an embodiment of the present disclosure;

[0022] Figures 2A and 2B are exemplary interactive schematic diagrams of the method provided according to embodiments of the present disclosure;

[0023] Figure 2C is a schematic flowchart provided according to an embodiment of the present disclosure;

[0024] Figures 3A to 3C are exemplary interactive schematic diagrams of the method provided according to embodiments of the present disclosure;

[0025] Figure 4 is an exemplary interactive schematic diagram of the method provided according to an embodiment of the present disclosure;

[0026] Figure 5A is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure;

[0027] Figure 5B is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure;

[0028] Figure 6A is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0029] Figure 6B is a schematic diagram of a communication device according to an embodiment of the present disclosure. Detailed Implementation

[0030] This disclosure provides an uplink transmission method, a communication device, a communication system, and a storage medium.

[0031] In a first aspect, embodiments of this disclosure provide an uplink transmission method, executed by a first terminal, the method comprising:

[0032] The first precoding is determined based on the first information and the Channel State Information Reference Signal (CSI-RS) resource, wherein the first information includes channel information between the first terminal and the second terminal, and the first precoding includes at least one precoding.

[0033] The Physical Uplink Shared Channel (PUSCH) is sent to the network device according to the second precoding in the first precoding, wherein the second precoding includes at least one precoding.

[0034] In the above embodiments, in uplink transmission based on non-codebook, the first terminal determines the uplink precoding based on the channel information between itself and other terminals. Thus, based on the determined uplink precoding, interference to the downlink transmission of other terminals can be effectively suppressed during the uplink transmission process, thereby improving communication performance.

[0035] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0036] Based on the first precoding, a Sounding Reference Signal (SRS) is sent to the network device.

[0037] In the above embodiments, the first terminal can send SRS based on the precoding determined according to the first information, thereby reducing interference to the downlink transmission of other terminals and improving communication performance during the SRS transmission process.

[0038] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0039] The device receives at least one first piece of information from a network device, or sends at least one first piece of information to a network device, wherein when the at least one first piece of information includes multiple first pieces of information, the different first pieces of information correspond to different second terminals.

[0040] In the above embodiments, the network device can be configured with different first information, or the terminal can report different first information, thereby selectively suppressing downlink interference to a specific second terminal and improving flexibility.

[0041] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0042] The receiver receives second information sent by a network device, the second information being used to indicate, in at least one first information, first information used to determine the first pre-encoded information.

[0043] In the above embodiments, the first terminal can select one of different first information to determine the first precode based on the second information indicated by the network device, thereby reducing downlink interference to the second terminal corresponding to the first information.

[0044] In conjunction with the embodiments of the first aspect, in some embodiments, the second information includes a bitmap, the bitmap including at least one bit, the at least one bit corresponding one-to-one with at least one piece of first information, wherein the first information corresponding to the bit with a bit value of a first value is used to determine the first precoding; or...

[0045] The second information includes an index for determining the first pre-encoded information, wherein different first information corresponds to different indices.

[0046] In the above embodiments, the second information can indicate the first information used in this uplink transmission in different ways, thereby improving the efficiency and flexibility of indication.

[0047] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0048] Receive instruction information sent by network devices, or send instruction information to network devices;

[0049] The instruction information is used to instruct the first terminal or network device to process at least one piece of first information.

[0050] In the above embodiments, in the scenario of receiving different first information of network configuration, the first terminal may also receive instruction information sent by the network device to know the processing behavior of different first information; or, in the scenario of reporting different first information, the first terminal may also send instruction information to the network device to indicate the processing behavior of different first information; thereby, after obtaining at least one first information, the first terminal or the network device can perform reasonable maintenance and improve the efficiency of subsequent application of first information.

[0051] In conjunction with the embodiments of the first aspect, in some embodiments, the indication information is used to indicate at least one of the following:

[0052] Replace the first information in at least one piece of first information;

[0053] Add new first information to the at least one first information;

[0054] The first information in the at least one piece of first information is deleted. In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0055] The first terminal receives at least one first resource sent by a network device, wherein the first first resource is used by the first terminal to send at least one first message.

[0056] In the above embodiments, the network device can provide the first terminal with the resources to send the first information, so that the first terminal can report the first information based on the appropriate resources.

[0057] In conjunction with the embodiments of the first aspect, in some embodiments, at least one first message is sent to the network device, including one of the following:

[0058] At least one first message is sent to the network device according to the period indicated by at least one first resource;

[0059] Send at least one first message to the network device based on the first resource that is activated or triggered in at least one first resource;

[0060] When a first event occurs, at least one first message is sent to the network device based on at least one first resource.

[0061] In the above embodiments, the first terminal can report the first information at an appropriate time based on the first resource or the first event, thereby improving communication efficiency in the scenario of suppressing interference.

[0062] In conjunction with the embodiments of the first aspect, in some embodiments, the first event includes at least one of the following:

[0063] The measurement between the first terminal and the second terminal is greater than the first threshold;

[0064] The measurement between the first terminal and the second terminal is less than the second threshold.

[0065] In the above embodiments, the first terminal can determine whether to send a first event based on measurement, so as to report the first information in a timely manner when the first event occurs.

[0066] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0067] The system receives third information sent by the network device, which is used to indicate the interference suppression information of the first terminal to the second terminal.

[0068] In the above embodiments, the network device can indicate interference suppression information, such as the number of layers, to the first terminal, so that the first terminal can suppress interference based on the indication of the network device, thereby improving the communication performance of the second terminal.

[0069] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0070] Send capability information to the network device, the capability information being used to indicate the interference suppression capability of the first terminal against one or more second terminals; the interference suppression capability includes at least one of the following:

[0071] The first capability is used to instruct the first terminal to support the suppression of interference to the second terminal in non-codebook-based uplink transmissions.

[0072] The second capability is used to indicate the maximum number of second terminals that the first terminal can support for simultaneous interference suppression.

[0073] The third capability is used to indicate the maximum number of layers that the first terminal supports when suppressing interference to a second terminal.

[0074] In the above embodiments, the first terminal can report its capabilities to the network device, reporting different capabilities under interference suppression scenarios, so as to facilitate reasonable configuration by the network device.

[0075] In conjunction with the embodiments of the first aspect, in some embodiments, the third information sent by the network device is determined based on a third capability.

[0076] In the above embodiments, the network device can send third information based on the capabilities of the first terminal, thereby suppressing interference based on the capabilities of the first terminal.

[0077] Secondly, embodiments of this disclosure provide an uplink transmission method, executed by a network device, the method further comprising:

[0078] The PUSCH sent by the first terminal is received, wherein the PUSCH is sent according to the second precoding in the first precoding, the first precoding is determined according to the first information and CSI-RS resources, the first information includes the channel information between the first terminal and the second terminal, and the first precoding includes at least one precoding, wherein the second precoding includes at least one precoding.

[0079] In the above embodiments, in the non-codebook-based uplink transmission, the network device can receive uplink information sent by the first terminal. The uplink transmission of the first terminal is based on the channel information between it and other terminals to determine the uplink precoding, which can effectively suppress interference to the downlink transmission of other terminals and improve communication performance.

[0080] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0081] Receive the SRS sent by the first terminal, which is sent according to the first precode.

[0082] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0083] Sending at least one first piece of information to a first terminal, or receiving at least one first piece of information sent by a first terminal, wherein when at least one first piece of information includes multiple first pieces of information, the second terminals corresponding to different first pieces of information among the multiple first pieces of information are different.

[0084] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0085] Send second information to the first terminal, the second information being used to indicate, in at least one first information, the first information used to determine the first pre-encoded information.

[0086] In conjunction with the embodiments of the second aspect, in some embodiments, the second information includes a bitmap, the bitmap including at least one bit, the at least one bit corresponding one-to-one with at least one piece of first information, wherein the first information corresponding to the bit with a bit value of a first value is used to determine the first precoding; or...

[0087] The second information includes an index for determining the first pre-encoded information, wherein at least one piece of first information corresponds to a different index.

[0088] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0089] Send instruction information to the first terminal, or receive instruction information sent by the first terminal;

[0090] The instruction information is used to instruct the first terminal or network device to process at least one piece of first information.

[0091] In conjunction with embodiments of the second aspect, in some embodiments, the indication information is used to indicate at least one of the following:

[0092] Replace the first information in at least one piece of first information;

[0093] Add new first information to the at least one first information;

[0094] The first information in the at least one first information is deleted.

[0095] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0096] Send at least one first resource to the first terminal, wherein the at least one first resource is used by the first terminal to send at least one first message.

[0097] In conjunction with the embodiments of the second aspect, in some embodiments, at least one piece of first information is sent by the terminal according to a period indicated by at least one first resource; or,

[0098] At least one first message is sent by the terminal based on a first resource that is activated or triggered in at least one first resource, or,

[0099] At least one first message is sent by the terminal in accordance with at least one first resource when a first event occurs.

[0100] In conjunction with embodiments of the second aspect, in some embodiments, the first event includes at least one of the following:

[0101] The measurement between the first terminal and the second terminal is greater than the first threshold;

[0102] The measurement between the first terminal and the second terminal is less than the second threshold.

[0103] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0104] A third message is sent to the first terminal, which is used to indicate the interference suppression information of the first terminal to the second terminal.

[0105] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0106] The system receives capability information transmitted by a first terminal, the capability information indicating the first terminal's interference suppression capability against one or more second terminals; the interference suppression capability includes at least one of the following:

[0107] The first capability is used to instruct the first terminal to support the suppression of interference to the second terminal in non-codebook uplink transmissions.

[0108] The second capability is used to indicate the maximum number of second terminals that the first terminal can support for simultaneous interference suppression.

[0109] The third capability is used to indicate the maximum number of layers that the first terminal supports when suppressing interference to a second terminal.

[0110] In conjunction with the embodiments of the second aspect, in some embodiments, the third information sent by the network device is determined based on a third capability.

[0111] Thirdly, embodiments of this disclosure provide a communication device, wherein the communication device is used to perform the method described in the first aspect or the second aspect.

[0112] Fourthly, embodiments of this disclosure provide a communication system, including a first terminal and a network device, wherein,

[0113] The first terminal is configured to implement the method as described in the first aspect;

[0114] The network device is configured to implement the method as described in the second aspect.

[0115] Fifthly, embodiments of this disclosure provide a storage medium storing instructions, wherein...

[0116] When the instructions are executed on the communication device, the communication device causes the communication device to perform the method as described in the first aspect or the second aspect.

[0117] In a sixth aspect, embodiments of this disclosure provide a program product, including at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, they implement the method described in the first aspect or the second aspect.

[0118] In a seventh aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in alternative implementations of the first and second aspects.

[0119] Eighthly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described according to optional implementations of the first and second aspects above.

[0120] It is understood that the aforementioned communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0121] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0122] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0123] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0124] In the embodiments disclosed herein, "multiple" refers to two or more.

[0125] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0126] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0127] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0128] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0129] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0130] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0131] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0132] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0133] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.

[0134] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0135] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0136] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0137] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0138] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0139] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0140] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0141] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0142] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0143] As shown in Figure 1A, the communication system 100 includes a first terminal 101, a network device 102, and a second terminal 103.

[0144] The first terminal 101 and the second terminal 103 can represent different terminals.

[0145] In some embodiments, a terminal includes, but is not limited to, at least one of the following: a mobile phone, a wearable device, an Internet of Things device, a car with communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, 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 a wireless terminal device in a smart home.

[0146] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0147] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.

[0148] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0149] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0150] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0151] In some embodiments, core network equipment includes network elements with specific functions, such as Access Management Function (AMF) and Service Management Function (SMF).

[0152] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0153] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1A, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1A are illustrative. The communication system may include all or some of the main bodies in FIG1A, or it may include other main bodies outside of FIG1A. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0154] The embodiments disclosed herein 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), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a 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, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0155] In some implementations, mobile communications can support duplex modes. For example, 5G supports three duplex modes: Time Division Duplex (TDD), Frequency Division Duplex (FDD), and Subband Full Duplex (SBFD).

[0156] Due to limitations in spectrum resources, TDD's deployment range far exceeds that of FDD. However, compared to FDD, TDD has fewer uplink resources, resulting in limited uplink coverage; simultaneously, fewer uplink transmission opportunities lead to longer feedback latency. SBFD, a new duplex technology, can effectively solve the uplink limitation problem. As shown in Figure 1B, compared to TDD, SBFD can introduce an uplink subband (UL subband) on the frequency domain resources corresponding to downlink symbols and / or flexible symbols for uplink transmission. Therefore, SBFD can effectively improve uplink coverage and reduce feedback latency.

[0157] As shown in Figures 1B to 1D, SBFD includes subband non-overlapping full duplex and subband overlapping full duplex, and may also include flexible overlapping full duplex, flexible subband duplex, and in-band duplex (IBFD). These duplexing technologies can further improve the capacity and speed of communication systems and reduce latency.

[0158] In some implementations, duplexing techniques such as SBFD (including overlapping and non-overlapping), flexible SBFD, or IBFD introduce additional interference compared to conventional duplexing techniques such as TDD or FDD. As shown in Figure 1E, interference may include network device self-interference (e.g., gNB self-interference), inter-network device cross-link interference (gNB-gNB cross-link interference, gNB-gNB CLI), and inter-terminal device cross-link interference (UE-UE cross-link interference, UE-UE CLI). Among these, gNB self-interference refers to the interference caused by gNB downlink transmission on uplink reception, which can be caused by radio frequency leakage or environmental reflection; gNB-gNB CLI refers to the interference of gNB downlink on the uplink of other gNBs, and UE-UE CLI refers to the interference of UE uplink on the downlink of other UEs.

[0159] In some implementations, the transmission scheme includes non-codebook-based UL transmission. Non-codebook-based uplink transmission requires selecting the optimal uplink precoding from the network device side, without considering interference between terminal devices. This can lead to severe UE-UE CLI issues, especially in scenarios using subband non-overlapping full-duplex, subband overlapping full-duplex, flexible SBFD, or IBDFD duplexing technologies.

[0160] Figure 2A is an interactive schematic diagram of an uplink transmission method according to an embodiment of the present disclosure. As shown in Figure 2A, the uplink transmission method of this embodiment includes:

[0161] In step S2101, the first terminal 101 sends capability information to the network device 102.

[0162] In some embodiments, capability information is used to indicate the interference suppression capability of the first terminal 101 against one or more second terminals 103.

[0163] Optionally, the second terminal 103 is used to represent a terminal other than the first terminal 101. For example, as shown in FIG1E, the second terminal 103 represents a terminal that may be interfered with by the uplink transmission of the first terminal 101 during downlink transmission with network device 102.

[0164] In some embodiments, the interference suppression capability includes at least one of the following:

[0165] The first capability is used to instruct the first terminal to support the suppression of interference to the second terminal in non-codebook-based uplink transmissions.

[0166] The second capability is used to indicate the maximum number of second terminals that the first terminal can support for simultaneous interference suppression.

[0167] The third capability is used to indicate the maximum number of layers that the first terminal supports when suppressing interference to a second terminal.

[0168] Optionally, the first terminal 101 may report only the first capability, only the second capability, or only the third capability in the capability information. Alternatively, the first terminal 101 may report two or three of the above capabilities in the capability information.

[0169] Optionally, the first capability indicates that the first terminal 101 can suppress UE-UE CLI when performing non-codebook-based uplink transmission. When the first capability is supported, the network device 102 can schedule the first terminal 101 to perform the following embodiments. For example, when the first terminal 101 supports the first capability, the network device 102 sends first information, and the first terminal 101 determines the precoding of the uplink transmission based on the first information.

[0170] Optionally, the second capability indicates that the first terminal 101 can simultaneously suppress its CLI to a maximum of several second terminals 103 during uplink transmission.

[0171] Optionally, the third capability indicates that the first terminal can suppress the maximum number of CLI layers for a second terminal 103 during uplink transmission, and this capability can be used by the network device 102 for relevant configuration or knowledge.

[0172] In some embodiments, network device 102 receives the aforementioned capability information.

[0173] In some embodiments, step S2101 may be optional or may be omitted.

[0174] In step S2102, network device 102 sends third information to first terminal 101.

[0175] In some embodiments, the third information is used to indicate interference suppression information of the first terminal 101 on the second terminal 103.

[0176] Optionally, the interference suppression information may be, for example, the number of layers suppressed by the first terminal 101 on the second terminal 103, or the number of layers suppressed in a UE-UE CLI.

[0177] In some embodiments, when the first terminal 101 reports a third capability, the network device 102 can determine third information based on the third capability.

[0178] For example, the maximum number of layers in the third capability is the maximum number of layers indicated in the third information, that is, the number of layers indicated in the third information should be less than or equal to the maximum number of layers in the third capability.

[0179] In some embodiments, the third piece of information may also be referred to as parameter n.

[0180] In some embodiments, network device 102 may transmit third information via Media Access Control Control Element (MAC CE) or higher-layer signaling. The higher-layer signaling may be Radio Resource Control (RRC) signaling.

[0181] In some embodiments, the first terminal 101 receives third information.

[0182] In some embodiments, step S2102 may be optional or may be omitted.

[0183] In step S2103, network device 102 sends at least one first message to first terminal 101.

[0184] In some embodiments, the network device 102 sends at least one first piece of information to the first terminal 101. This can be a list of first pieces of information sent by the network device 102 to the first terminal 101, which includes one or more pieces of first information.

[0185] In some embodiments, the first information includes channel information between the first terminal 101 and the second terminal 103. In the list of first information or at least one piece of first information, such as when the list of first information or at least one piece of first information includes multiple pieces of first information, different pieces of first information correspond to different second terminals 103.

[0186] Optionally, in the list of first information or at least one first information, each first information can be used by the first terminal 101 to suppress interference with the corresponding second terminal 103, as detailed in the following embodiments.

[0187] Optionally, taking UE1 as an example, the second terminal 103 may include other terminals such as UE1, UE2, and UE3. The list of first information or at least one piece of first information includes channel information between the first terminal 101 and different second terminals 103, such as the examples shown in Table 2-1 or Table 2-2 below.

[0188] Table 2-1

[0189] Table 2-2

[0190] In some embodiments, the channel information may be a channel matrix between the first terminal 101 and the second terminal 103.

[0191] Optionally, the channel matrix can be a three-dimensional matrix, with the three dimensions being the ports of the first terminal 101, the ports of the second terminal 103, and the frequency units, respectively.

[0192] In some embodiments, the channel information is determined based on the channel matrix between the first terminal 101 and the second terminal 103, for example, based on the singular value decomposition (SVD) decomposition of the channel matrix, or based on the precoding matrix indicator (PMI) determined from the channel matrix.

[0193] In some embodiments, the first information may also be referred to as the first parameter. When the network device 102 sends at least one first information, it may mean sending at least one first parameter. At least one first information or a list of first information may also be referred to as the first parameter table. This disclosure does not limit this name.

[0194] In some embodiments, network device 102 may send at least one first message via MAC CE.

[0195] In some embodiments, in conjunction with the description of step S2102, when sending third information:

[0196] Optionally, the same third information or parameter n can be used for different first information.

[0197] Optionally, network device 102 may send at least one third piece of information to first terminal 101, each third piece of information corresponding to a first parameter. Optionally, in the list of first information, each row also includes one piece of third information, as shown in the examples in Table 2-3. Optionally, the candidate values ​​for the layer number indicated by the third information are 1, 2, 3, 4, etc.

[0198] Table 2-3

[0199] In some embodiments, the first terminal 101 receives a list of first information or at least one first information sent by the network device 102 to learn the channel information between itself and different second terminals 103.

[0200] In step S2104, network device 102 sends instruction information to first terminal 101.

[0201] In some embodiments, the instruction information is used to instruct the first terminal 101 to process at least one first piece of information.

[0202] Optionally, the instruction information may instruct the first terminal 101 to perform maintenance or processing actions on at least one first piece of information or a list of first pieces of information.

[0203] In some embodiments, the indication information includes at least one of the following:

[0204] Replace at least one piece of first information;

[0205] Add new first information to at least one first piece of information;

[0206] Delete the first information in at least one of the first pieces of information.

[0207] Optionally, still taking Table 2-1 as an example, one or more of the original first information can be replaced. For example, the first information corresponding to index 0 in Table 2-1 (i.e., the channel information of the first terminal UE1 and the second terminal UE5) can be replaced with the first information (the channel information of the first terminal UE1 and the second terminal UE5).

[0208] Optionally, taking Table 2-1 as an example, one or more first information can be added. For example, the first information of index 3 can be added to Table 2-1. This first information is the channel information between the first terminal UE1 and the second terminal UE5.

[0209] Optionally, taking Table 2-1 as an example, one or more original first information entries can be deleted, such as deleting the first information entry of index 2 in Table 2-1.

[0210] In some embodiments, when the network device 102 sends multiple first messages, the indication information may also instruct the first terminal 101 to create a list of first messages, such as creating a list of first messages as shown in Table 2-1 or 2-2.

[0211] In some embodiments, the first terminal 101 receives indication information and may maintain at least one first piece of information received based on the indication information.

[0212] In step S2105, network device 102 sends second information to first terminal 101.

[0213] In some embodiments, the second information is used to indicate, in at least one first information, the first information used to determine the first information for determining the uplink transmission precoding.

[0214] In some embodiments, based on step S2101, if the network device 102 sends one or more first messages, it can indicate to the first terminal 101 the first messages that need to be considered for this uplink transmission through the second messages.

[0215] In some embodiments, network device 102 may indicate one or more first information through second information, then first terminal 101 needs to determine the precoding of uplink transmission based on the one or more first information.

[0216] Optionally, taking Table 2-1 as an example, the second information indicates index 0; or taking Table 2-2 as an example, the second information indicates the first row; then, when the first terminal 101 determines the precoding for uplink transmission in the following embodiments, it needs to determine it according to the first information of index 0 or the first row, so as to suppress interference for the second terminal corresponding to index 0 or the first row in uplink transmission.

[0217] In some embodiments, the second information may also be referred to as the second parameter.

[0218] In some embodiments, network device 102 may indicate first information for determining uplink transmission precoding using the following example:

[0219] In one example, the second information includes a bitmap, which includes at least one bit, and the at least one bit corresponds one-to-one with at least one piece of first information, wherein the first information corresponding to the bit in the bitmap with a bit value of a first value is used to determine the first pre-encoding.

[0220] In this example, the length of the bitmap is the same as the number of rows or indices of at least one piece of first information, and each bit corresponds to a row or index of at least one piece of first information. When the value of a bit is the first value, the first information or channel information corresponding to that bit is used to determine the precoding for uplink transmission.

[0221] In this example, the first value can be 1 or 0. In this embodiment of the disclosure, the first value is 1.

[0222] In another example, the second information includes an index for determining the first pre-encoded information, wherein different first information corresponds to different indices.

[0223] In this example, the second information can be used to indicate one or more indices (or row indices), each index corresponding to a row in at least one of the first information. The first information or channel information corresponding to the indices included in the second information is used to determine the precoding for transmitting the first signal.

[0224] In some embodiments, network device 102 may send second information via downlink control information (DCI) or MAC-CE.

[0225] Optionally, for periodic SRS, a second message can be sent by triggering the SRS via DCI.

[0226] Optionally, for semi-persistent SRS, a second message can be sent via the MAC CE that activates the SRS.

[0227] Optionally, for periodic, semi-persistent, or aperiodic SRS, a second message can be sent via MAC CE.

[0228] Optionally, the time-domain characteristics of SRS can be configured using the following configuration information or SRS resource configuration.

[0229] In some embodiments, the first terminal 101 receives the second information.

[0230] In step S2106, network device 102 sends configuration information to first terminal 101.

[0231] In some embodiments, configuration information is used to configure one or more resources.

[0232] In some embodiments, configuration information can be used to configure third resources such as SRS resources. The third resource can indicate time-domain resources, frequency-domain resources, sequence information, power information, spatial information, etc., for transmitting SRS, and is used by the first terminal 101 to transmit a first signal, which may include SRS.

[0233] Optionally, airspace information may refer to the number of ports used to send the SRS and / or the port index of the SRS. For example, a third resource may indicate that the number of ports used to send the SRS is 1.

[0234] Optionally, the configuration information includes an SRS resource set.

[0235] Optionally, the SRS resource set may include at least one of the following:

[0236] The usage indicator indicates the purpose of the SRS resource set; for example, for non-codebook-based uplink transmissions, the usage field has a value of 'non-codebook'.

[0237] At least one SRS resource, for example, an SRS resource set includes 1 to 8 SRS resources, wherein each SRS resource includes time and frequency resources, sequence information and power information for transmitting SRS, and each SRS resource has 1 port;

[0238] The associated second resource's identity (ID) may include an NZP CSI-RS resource. For non-codebook-based uplink transmissions, an SRS resource set is associated with an NZP CSI-RS resource. The terminal device determines the precoding used to transmit the SRS based on the measurement results of the NZP CSI-RS resource.

[0239] In some embodiments, the configuration information can also be used to configure a second resource, such as a CSI-RS resource, which may include an NZP CSI-RS resource. For example, the second resource may indicate time-frequency resources for transmitting NZP CSI-RS, etc., for the first terminal 101 to receive a second signal, which may include CSI-RS.

[0240] Optionally, the third resource may be associated with the second resource. For example, at least one SRS resource may be associated with the same NZP CSI-RS resource; or, a set of SRS resources may be associated with one NZP CSI-RS resource.

[0241] In some embodiments, the first terminal 101 receives configuration information and can learn about the resources required for uplink transmission.

[0242] In step S2107, network device 102 sends CSI-RS to first terminal 101.

[0243] In some embodiments, the first terminal 101 receives CSI-RS according to a second resource such as a CSI-RS resource.

[0244] Optionally, CSI-RS is used by the first terminal 101 to determine the precoding for transmitting SRS.

[0245] In some embodiments, the flow of step S2107 and subsequent steps can be referred to the schematic diagram in FIG2C.

[0246] In step S2108, the first terminal 101 determines the first precoding based on the first information and CSI-RS resources.

[0247] In some embodiments, the CSI-RS resource may be an NZP CSI-RS resource.

[0248] Optionally, the first terminal 101 measures the NZP CSI-RS based on the NZP CSI-RS resources associated with the SRS resource set, thereby determining the channel information between the first terminal 101 and the network device 102.

[0249] In some embodiments, in conjunction with the description of the foregoing embodiments, the first information is used to indicate the channel information between the first terminal 101 and the second terminal 103.

[0250] In some embodiments, if the network device 102 sends only one first message in step S2103, the first message used in step S2108 can be that one first message.

[0251] In some embodiments, if the network device 102 sends multiple first messages in step S2103, the first messages used in step S2108 are determined based on the second messages in step S2105.

[0252] Optionally, the first information in this step can be one or more, determined based on the indication of the second information. For example, the second information can indicate channel information between the first terminal 101 and at least one second terminal 103, which can be used to determine the first precoding.

[0253] In some embodiments, the first terminal 101 determines the first precoding based on the channel information between the first terminal 101 and the network device 102, and the channel information between the first terminal 101 and the second terminal 103.

[0254] Optionally, the first precoding may be a precoding used for transmitting SRS.

[0255] Optionally, the first precoding includes at least one precoding.

[0256] In one example, assuming the channel information between network device 102 and first terminal 101 in a frequency unit is H1, and the channel information between first terminal 101 and second terminal 103 in the same frequency unit is H2, then the first precoding used by first terminal 101 to transmit SRS in that frequency unit is W. m .

[0257] Among them, W m Let W be the first m columns (i.e., the m right singular vectors corresponding to the m largest singular values), where m represents the number of SRS resources, and W = V[(V H V) -1 ] H , Let H1 be the first m columns of the right singular vectors obtained after SVD decomposition (i.e., the m columns of right singular vectors corresponding to the m largest singular values). H1 represents the first n columns of the right singular vector obtained after SVD decomposition of H2 (i.e., the n columns of right singular vectors corresponding to the n largest singular values), where n represents the number of layers suppressing UE-UE CLI. The rows of H1 represent the antenna ports of the network devices, and the columns of H1 represent the antenna ports of the first terminal devices. The rows of H2 represent the antenna ports of the second terminal devices, and the columns of H2 represent the antenna ports of the first terminal devices. In the operation, H represents the conjugate transpose.

[0258] In this example, the Zero forcing (ZF) algorithm is used to determine the first precoding. Using the precoding determined by the algorithm to send SRS and PUSCH can effectively suppress UE-UE CLI, that is, effectively suppress the interference of the first terminal 101 to the second terminal 103.

[0259] In step S2109, the first terminal 101 sends SRS to the network device 102 according to the first precoding.

[0260] In some embodiments, the first terminal 101 may send SRS according to the SRS resource set and the first precode.

[0261] In some embodiments, the number of first precodes determined in step S2108 may be consistent with the number of SRS resources, and the first precodes correspond one-to-one with the SRS resources.

[0262] Optionally, the first terminal 101 sends an SRS based on each SRS resource and its corresponding first precode.

[0263] Optionally, the number of SRS sent is the same as the number of SRS resources.

[0264] In some embodiments, network device 102 receives SRS and can measure SRS.

[0265] Optionally, network device 102 can determine at least one of the following based on measurements of SRS: antenna port, precoder, and number of layers used to transmit PUSCH.

[0266] Optionally, by determining the antenna port used to transmit the PUSCH, network device 102 can determine the number of layers and precoding for transmitting the PUSCH. The port used to transmit the PUSCH implicitly indicates the number of layers and precoding for transmitting the PUSCH.

[0267] In step S2110, network device 102 instructs first terminal 101 to send information for PUSCH.

[0268] In some embodiments, the information used to transmit PUSCH may include at least one of the following: the antenna port for transmitting PUSCH, precoding, and the number of layers.

[0269] In some embodiments, network device 102 indicates the antenna port, precoding, and layer number used to transmit PUSCH via SRS resource indicator (SRI) information.

[0270] Optionally, the SRI is carried on DCI or higher-layer signaling, and the SRI indicates at least one SRS resource in the set of SRS resources for uplink transmission based on non-codebook.

[0271] Optionally, the antenna port used to transmit PUSCH is the SRS port in the SRS resource indicated by the SRI;

[0272] Optionally, the precoding used to send PUSCH is: precoding corresponding to the SRS resource indicated by the SRI;

[0273] Optionally, the layer used to send PUSCH: the number of SRS resources indicated by SRI.

[0274] In some embodiments of this disclosure, the precoding used to send PUSCH is referred to as the second precoding.

[0275] Optionally, the second precoding includes at least one precoding.

[0276] Optionally, the second precoding may be a subset of the first precoding, or the same as the first precoding.

[0277] In some embodiments, the first terminal 101 receives an instruction from the network device 102 to learn about information such as the second precoding that sends PUSCH.

[0278] In step S2111, the first terminal 101 sends PUSCH to the network device 102 according to the second precoding.

[0279] In some embodiments, the first terminal 101 sends a PUSCH based on an instruction from the network device 102.

[0280] In some embodiments, the port on which the first terminal 101 transmits PUSCH can be the same as the port on which it transmits SRS, and / or the second precoding for transmitting PUSCH and the first precoding for transmitting SRS can be the same, in order to suppress interference to the second terminal 103.

[0281] Optionally, in conjunction with the description of step S2108, the first terminal 101 transmits PUSCH according to the first information and the precoding determined by the zero-breaking algorithm, which can effectively suppress the interference of the uplink transmission of the first terminal 101 on the downlink reception of the second terminal 103.

[0282] Understandably, the antenna port used to transmit PUSCH is the SRS port of the SRS resource indicated by SRI. Since the number of ports for each SRS resource is 1, it implicitly indicates that the number of layers used to transmit PUSCH is the number of SRS resources indicated by SRI; in addition, the term "port" implicitly indicates that the precoding used to transmit PUSCH is the precoding corresponding to the SRS resource indicated by SRI.

[0283] In some embodiments, network device 102 receives PUSCH.

[0284] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0285] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" can be used interchangeably. For example, a codebook can be a collection of one or more codewords / precoding matrices.

[0286] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink", as well as the terms "sidelink", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct link", "direct communication", and "direct link communication".

[0287] In some embodiments, the terms “downlink control information (DCI),” “downlink (DL) assignment,” “DL DCI,” “uplink (UL) grant,” and “UL DCI” can be used interchangeably.

[0288] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, as can terms such as "physical uplink shared channel (PUSCH)" and "UL data".

[0289] In some embodiments, the terms “radio”, “wireless”, “radio access network (RAN)”, “access network (AN)”, and “RAN-based” can be used interchangeably.

[0290] In some embodiments, the terms "synchronization signal (SS)," "synchronization signal block (SSB)," "reference signal (RS)," "pilot," and "pilot signal" can be used interchangeably.

[0291] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) status", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", and "panel" can be used interchangeably.

[0292] In some embodiments, the terms “frame”, “radio frame”, “subframe”, “slot”, “sub-slot”, “mini-slot”, “symbol”, “symbol”, and “transmission time interval (TTI)” can be used interchangeably.

[0293] In some embodiments, "acquire," "get," "obtain," "receive," "transmit," "bidirectional transmission," and "send and / or receive" can be used interchangeably and can be interpreted as receiving from other entities, acquiring from protocols, acquiring from higher layers, obtaining through self-processing, or autonomous implementation. Protocols include, for example, at least one of the 3GPP protocol, Wi-Fi protocol, and audio and / or video protocols.

[0294] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0295] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0296] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0297] 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 and / or instructions received; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the receiver to respond to the sent content.

[0298] In some embodiments, if an arrow in the interaction diagram representing the sending of information, signaling, etc. from one subject to another passes through other subjects, it can be interpreted as the information being forwarded from one subject to another via other subjects, or it can be interpreted as the information being sent from one subject to another without passing through other subjects.

[0299] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2111. For example, steps S2108 and S2111 may be implemented as independent embodiments, but are not limited thereto.

[0300] In some embodiments, steps S2101 and S2102 are optional, and one of them may be selected for execution in different embodiments, or one or more of these steps may be omitted or substituted in different embodiments.

[0301] In some embodiments, step S2103 may optionally be omitted or substituted in one or more of these steps in different embodiments, as shown in the embodiment corresponding to FIG2B.

[0302] In some embodiments, steps S2104 or S2105 may be optionally omitted or substituted in different embodiments. For example, network device 102 may send only a first message.

[0303] In some embodiments, steps S2106, S2107, S2109, and S2110 may optionally be omitted or substituted in different embodiments.

[0304] In some embodiments, steps S2103 and S2104 can be executed synchronously, such as sending indication information while sending at least one first message.

[0305] In some embodiments, the order of steps S2106 is for illustrative purposes only. For example, steps S2106 may be performed before steps S2101 or before steps S2103.

[0306] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0307] Figure 2B is an interactive schematic diagram of an uplink transmission method according to an embodiment of the present disclosure. As shown in Figure 2B, the uplink transmission method of an embodiment of the present disclosure includes:

[0308] In step S2201, the first terminal 101 sends capability information to the network device 102.

[0309] In some embodiments, the implementation of step S2201 can be referred to the implementation of step S2101 in FIG2A, and will not be repeated here.

[0310] In step S2202, network device 102 sends third information to first terminal 101.

[0311] In some embodiments, the implementation of step S2202 can be referred to the implementation of step S2102 in FIG2A, and will not be repeated here.

[0312] In step S2203, network device 102 sends at least one first resource to first terminal 101.

[0313] In some embodiments, at least one first resource is used by the first terminal to send at least one first message.

[0314] In some embodiments, the first resource may include time and frequency resources for transmitting the first information, etc.

[0315] In some embodiments, the network device is configured to periodically send first information. In this embodiment, the first resource includes a first period, which is the period for sending the first information.

[0316] In some embodiments, the network device is configured to transmit first information semi-persistently. In this embodiment, the network device 102 can configure one or more first resources for the first terminal 101, wherein each first resource includes a first cycle.

[0317] In this embodiment, network device 102 can activate or deactivate one of one or more first resources via signaling such as MAC CE. First terminal 101 can send first information according to a first period in the activated first resource.

[0318] In some embodiments, network device 102 is configured to send first information non-periodically. In this embodiment, network device 102 may configure one or more first resources for first terminal 101.

[0319] In this embodiment, network device 102 can trigger one of one or more first resources via signaling such as DCI or MAC CE. First terminal 101 can send first information once according to the triggered first resource.

[0320] In some embodiments, network device 102 is configured to send first information based on an event trigger. In this embodiment, network device 102 may be configured with a first event, upon which the first terminal 101 sends the first information according to a first resource.

[0321] In some embodiments, the first terminal 101 receives at least one first resource.

[0322] In step S2204, the first terminal 101 sends at least one first message to the network device 102.

[0323] In some embodiments, the channel information between the first terminal 101 and different second terminals 103 can be obtained based on measurements between terminal devices, and the first terminal 101 can understand the interference situation based on the channel information.

[0324] In some embodiments, after the first terminal 101 obtains at least one piece of first information based on measurement, it may send at least one piece of first information to the network device 102.

[0325] In some embodiments, the first terminal 101 sends at least one first message to the network device based on at least one first resource.

[0326] In this embodiment, for the case of periodic transmission, after receiving the first resource configured by the network device, the first terminal can periodically send at least one first message to the network device according to the first period in the first resource.

[0327] In some embodiments, the first terminal 101 sends at least one first message to the network device based on the first resource that is activated or triggered in at least one first resource.

[0328] In this embodiment, for the semi-persistent transmission case, after receiving a MAC CE from the network device activating a certain first resource, the first terminal periodically sends at least one first message to the network device according to the first period in the activated first resource.

[0329] Alternatively, in this embodiment, for non-periodic transmission, after receiving a DCI or MAC CE triggered by the network device for the first resource, the first terminal sends a first message to the network device once according to the triggered first resource.

[0330] In some embodiments, when a first event occurs, the first terminal 101 sends at least one first message to the network device based on at least one first resource.

[0331] In this embodiment, when an event is triggered, the first terminal 101 determines that a first event has occurred, and the first terminal sends a first message to the network device based on the first resource.

[0332] In some embodiments, the first event includes at least one of the following:

[0333] The measurement between the first terminal and the second terminal is greater than the first threshold;

[0334] The measurement between the first terminal and the second terminal is less than the second threshold.

[0335] Optionally, the two measurements can be the reference signal received power (RSRP) or the received signal strength indicator (RSSI).

[0336] In some embodiments, network device 102 receives at least one first piece of information.

[0337] In some embodiments, the description of the first information, or at least one description of the first information, can still refer to the implementation of step S2103 in FIG2A, such as the implementations in Tables 2-1 to 2-3. The sender of the first information in this embodiment of the disclosure is different from that in S2103.

[0338] In step S2205, the first terminal 101 sends an instruction message to the network device 102.

[0339] In some embodiments, the description in step S2205 can be found in the implementation of step S2104 in FIG2A, where the sender of the indication information is different from that in step S2104.

[0340] In step S2206, network device 102 sends second information to first terminal 101.

[0341] In some embodiments, the implementation of step S2206 can be referred to the implementation of step S2105 in FIG2A, and will not be repeated here.

[0342] In step S2207, network device 102 sends configuration information to first terminal 101.

[0343] In some embodiments, the implementation of step S2207 can be referred to the implementation of step S2106 in FIG2A, and will not be repeated here.

[0344] In step S2208, network device 102 sends CSI-RS to first terminal 101.

[0345] In some embodiments, the implementation of step S2208 can be referred to the implementation of step S2107 in FIG2A, and will not be repeated here.

[0346] In step S2209, the first terminal 101 determines the first precoding based on the first information and CSI-RS resources.

[0347] In some embodiments, the implementation of step S2209 can be referred to the implementation of step S2108 in FIG2A, and will not be repeated here.

[0348] In step S2210, the first terminal 101 sends SRS to the network device 102 according to the first precoding.

[0349] In some embodiments, the implementation of step S2210 can be referred to the implementation of step S2109 in FIG2A, and will not be repeated here.

[0350] In step S2211, network device 102 instructs first terminal 101 to send information for PUSCH.

[0351] In some embodiments, the implementation of step S2211 can be referred to the implementation of step S2110 in FIG2A, and will not be repeated here.

[0352] In step S2212, the first terminal 101 sends PUSCH to the network device 102 according to the second precoding.

[0353] In some embodiments, the implementation of step S2212 can be found in the implementation of step S2111 in FIG2A, and will not be repeated here.

[0354] The communication method involved in the embodiments of this disclosure may include at least one of steps S2201 to S2212. For example, steps S2209 and S2212 may be implemented as independent embodiments, but are not limited thereto.

[0355] In some embodiments, steps S2203 or S2204 may optionally be omitted or substituted in different embodiments, as shown in the embodiment corresponding to FIG2A.

[0356] In some embodiments, the order of steps S2207 is for illustrative purposes only. For example, steps S2207 may be executed before steps S2201, or before steps S2203, or simultaneously with steps S2203.

[0357] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0358] Figure 3A is an interactive schematic diagram of an uplink transmission method according to an embodiment of the present disclosure. As shown in Figure 3A, the uplink transmission method of an embodiment of the present disclosure includes:

[0359] In step S3101, the first terminal 101 determines the first precoding based on the first information and CSI-RS resources.

[0360] In some embodiments, the implementation of step S3101 can be found in the implementation of step S2108 in FIG2A or the implementation of step S2209 in FIG2B, and will not be repeated here.

[0361] In step S3102, the first terminal 101 sends PUSCH to the network device 102 according to the second precode in the first precode.

[0362] In some embodiments, the implementation of step S3102 can be found in the implementation of step S2111 in FIG2A or the implementation of step S2212 in FIG2B, and will not be repeated here.

[0363] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0364] Figure 3B is an interactive schematic diagram of an uplink transmission method according to an embodiment of the present disclosure. As shown in Figure 3B, the uplink transmission method of an embodiment of the present disclosure includes:

[0365] In step S3201, network device 102 sends at least one first message to first terminal 101.

[0366] In some embodiments, the implementation of step S3201 can be referred to the implementation of step S2103 in FIG2A, and will not be repeated here.

[0367] In step S3202, network device 102 sends second information to first terminal 101.

[0368] In some embodiments, the implementation of step S3202 can be referred to the implementation of step S2105 in FIG2A, and will not be repeated here.

[0369] In step S3203, the first terminal 101 determines the first precoding based on the first information and CSI-RS resources.

[0370] In some embodiments, the implementation of step S3203 can be found in the implementation of step S2108 in FIG2A or the implementation of step S2209 in FIG2B, and will not be repeated here.

[0371] In step S3204, the first terminal 101 sends PUSCH to the network device 102 according to the second precode in the first precode.

[0372] In some embodiments, the implementation of step S3204 can be found in the implementation of step S2111 in FIG2A or the implementation of step S2212 in FIG2B, and will not be repeated here.

[0373] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0374] Figure 3C is an interactive schematic diagram of an uplink transmission method according to an embodiment of the present disclosure. As shown in Figure 3C, the uplink transmission method of an embodiment of the present disclosure includes:

[0375] In step S3301, network device 102 sends third information to first terminal 101.

[0376] In some embodiments, the implementation of step S3301 can be referred to the implementation of step S2102 in FIG2A, and will not be repeated here.

[0377] In step S3302, network device 102 sends at least one first message to first terminal 101.

[0378] In some embodiments, the implementation of step S3302 can be referred to the implementation of step S2103 in FIG2A, and will not be repeated here.

[0379] In step S3303, network device 102 sends second information to first terminal 101.

[0380] In some embodiments, the implementation of step S3303 can be referred to the implementation of step S2105 in FIG2A, and will not be repeated here.

[0381] In step S3304, the first terminal 101 determines the first precoding based on the first information and CSI-RS resources.

[0382] In some embodiments, the implementation of step S3304 can be found in the implementation of step S2108 in FIG2A or the implementation of step S2209 in FIG2B, and will not be repeated here.

[0383] In step S3305, the first terminal 101 sends PUSCH to the network device 102 according to the second precode in the first precode.

[0384] In some embodiments, the implementation of step S3305 can be found in the implementation of step S2111 in FIG2A or the implementation of step S2212 in FIG2B, and will not be repeated here.

[0385] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0386] This disclosure provides an uplink transmission method based on a non-codebook, which can effectively suppress UE-UE CLI and improve the downlink performance of terminal devices. To facilitate understanding of this disclosure, some specific embodiments are described below.

[0387] Example 1:

[0388] The first terminal device determines the precoding for transmitting SRS based on the first parameter and NZP CSI-RS resources, wherein the first parameter is the channel information between the first terminal device and the second terminal device;

[0389] Optionally, the first parameter corresponds to the first information in the foregoing embodiments.

[0390] Example 1-1: The network device sends the first parameter to the first terminal device;

[0391] Optionally, while sending the first parameter to the first terminal device, the network device may also instruct the first terminal device to perform at least one of the following actions based on the first parameter: create a first parameter table, replace the first parameter table, replace at least one row in the first parameter table, add at least one row in the first parameter table, or delete at least one row in the first parameter table.

[0392] Example 1-2: A first terminal device sends a first parameter to a network device, wherein the network device configures a first resource for the first terminal device, and the first terminal device sends the first parameter to the network according to the first resource; wherein the first resource includes:

[0393] Periodicity: The first resource includes the first period. After the network device configures the first resource to the first terminal device, the first terminal device periodically sends the first parameter to the network device. The sending period is the first period.

[0394] Semi-persistent: The network device configures at least one first resource to the first terminal device, each first resource including a first cycle; then, the network device activates / deactivates one of the first resources through the Medium access control-Control element (MAC-CE), and the first terminal device periodically sends a first parameter to the network device according to the activated first resource, the sending period being the first cycle of the activated first resource;

[0395] Aperiodic: The network device configures at least one first resource for the first terminal device; then, the network device triggers one of the first resources via DCI or MAC-CE, and the first terminal device sends a first parameter to the network device once according to the triggered first resource;

[0396] Event triggering: The network device configures the first resource to the first terminal device; when the first event occurs, the first terminal device sends the first parameter to the network device once according to the first resource.

[0397] First event: The reference signal received power (RSRP) or received signal strength indicator (RSSI) between a first terminal device and a second terminal device exceeds a first threshold or falls below a second threshold;

[0398] Optionally, while sending the first parameter to the network device, the first terminal device may also instruct the network device to perform at least one of the following actions based on the first parameter: create a first parameter table, replace the first parameter table, replace at least one row in the first parameter table, add at least one row in the first parameter table, or delete at least one row in the first parameter table.

[0399] In some embodiments, whether it is embodiment 1-1 or 1-2, the first parameter is carried on MAC-CE.

[0400] Example 2:

[0401] Based on Example 1, the network device will also send a second parameter to the first terminal device. The second parameter indicates at least one row in the first parameter table. Only the channel information in the at least one row in the first parameter table indicated by the second parameter is used to determine the precoding for transmitting SRS.

[0402] The second parameter includes a bitmap: the length of the bitmap is the same as the number of rows in the first parameter table, and each bit corresponds to a row in the first parameter table. When the value of a bit is the first value, the channel information in the row of the first parameter table corresponding to that bit is used to determine the precoding for transmitting the first signal.

[0403] The second parameter includes a row index: the second parameter includes at least one row index, each row index corresponds to a row in the first parameter table, and the channel information in the row in the first parameter table corresponding to the row index included in the second parameter is used to determine the precoding for transmitting the first signal;

[0404] The second parameter is carried on DCI or MAC-CE:

[0405] Periodic SRS: DCI is the DCI that triggers SRS;

[0406] Semi-persistent SRS: MAC-CE is the MAC-CE that activates SRS; or,

[0407] Periodic SRS, semi-persistent SRS, and aperiodic SRS, the second parameter can all be carried on MAC-CE;

[0408] Example 3:

[0409] Based on Embodiment 1 and / or Embodiment 2, the network device will also send parameter n to the first terminal device. Parameter n is used to indicate the first terminal device's ability to suppress a second terminal device, or the number of layers to suppress a UE-UE CLI.

[0410] The parameter n is carried on MAC-CE or higher-layer signaling.

[0411] Example 4:

[0412] Based on any one or more of Embodiments 1 to 3, the channel information may be:

[0413] Method 1: The channel information is the channel matrix between the first terminal device and the second terminal device;

[0414] Method 2: The channel information is determined based on the channel matrix between the first terminal device and the second terminal device, for example, based on the SVD decomposition of the channel matrix, or based on the PMI determined by the channel matrix.

[0415] Example 5:

[0416] Based on any one or more of Embodiments 1 to 5, the first terminal device reports the following capabilities to the network device:

[0417] First capability: Instructs the first terminal device to suppress UE-UE CLI when performing non-codebook-based uplink transmission;

[0418] Second capability: Instructs the first terminal device to suppress CLIs of up to a maximum number of second terminal devices simultaneously when sending PUSCH;

[0419] Third capability: The third capability indicates that the first terminal device can suppress the maximum number of CLI layers for a second terminal device when sending PUSCH, i.e., the maximum value of parameter n.

[0420] Figure 4 is an interactive schematic diagram of an uplink transmission method according to an embodiment of the present disclosure. Based on the above embodiments, as shown in Figure 4, the method may include the following steps:

[0421] In step S4101, the network device sends a first parameter to the first terminal device, the first parameter being the channel information between the first terminal device and the second terminal device.

[0422] It should be understood that the channel information between the first terminal device and the second terminal device is used by the first terminal device to suppress its CLI to the second terminal device when sending PUSCH, wherein the second terminal device is a terminal device other than the first terminal device.

[0423] Optionally, "the network device sending a first parameter to the first terminal device" includes: the network device sending at least one first parameter to the first terminal device, wherein the first parameter indicates channel information between the first terminal device and a second terminal device. It should be understood that different first parameters indicate channel information between the first terminal device and different second terminal devices. It should be understood that the first terminal device may suppress its CLI to multiple second terminal devices when sending PUSCH.

[0424] Optionally, the channel information between the first terminal device and the second terminal device is a channel matrix between the first terminal device and the second terminal device. For example, the channel matrix is ​​a three-dimensional matrix, with the three dimensions being the ports of the first terminal device, the ports of the second terminal device, and the frequency units, respectively.

[0425] Optionally, the channel information between the first terminal device and the second terminal device is determined based on the channel matrix between the first terminal device and the second terminal device. For example, the channel information between the first terminal device and the second terminal device is obtained by performing SVD on the channel matrix between the first terminal device and the second terminal device. For example, the channel information between the first terminal device and the second terminal device is a PMI determined based on the channel matrix between the first terminal device and the second terminal device.

[0426] Optionally, the first parameter is carried on the MAC-CE.

[0427] Optionally, while sending the first parameter to the first terminal device, the network device may also instruct the first terminal device to perform at least one of the following actions based on the first parameter: create a first parameter table, replace the first parameter table, replace at least one row in the first parameter table, add at least one row in the first parameter table, or delete at least one row in the first parameter table; wherein the first parameter table includes at least one first parameter. For example, the first terminal device maintains a first parameter table; if the first parameter table is empty, the network device instructs the first terminal device to create a first parameter table based on the first parameter; if the first parameter table is not empty, the network device instructs the first terminal device to replace the first parameter table, or replace at least one row in the first parameter table, or add at least one row, or delete at least one row, etc., based on the first parameter.

[0428] Optionally, before executing step S4101, the first terminal device reports a first capability to the network device. The first capability indicates that the first terminal device can suppress UE-UE CLI when performing non-codebook-based uplink transmission. It should be understood that only after the first terminal device reports the first capability to the network device will the network device send the first parameter to the first terminal device, and only then will the first terminal device suppress the interference of its transmitted PUSCH to the second terminal device according to the first parameter.

[0429] Optionally, before performing step S4101, the first terminal device reports a second capability to the network device, the second capability indicating that the first terminal device can simultaneously suppress CLI requests to a maximum of several second terminal devices when sending PUSCH.

[0430] In step S4102, the network device sends a third resource (SRS resource) to the first terminal device. The third resource is associated with a second resource (NZP CSI-RS resource). The third resource is used by the first terminal device to send a first signal (SRS), and the second resource is used by the first terminal device to receive a second signal (CSI-RS).

[0431] Optionally, "the network device sends a third resource to the first terminal device" includes: the network device sending at least one third resource to the first terminal device, or the network device sending a set of third resources (SRS resource set) to the first terminal device, wherein the set of third resources includes at least one third resource.

[0432] Optionally, the third resource includes time-domain resources, frequency-domain resources, sequence information, power information, spatial information, etc., used by the first terminal device to transmit the first signal.

[0433] Optionally, "the third resource includes spatial information for the first terminal device to transmit the first signal" includes: the third resource includes the number of ports for transmitting the first signal and / or the port index of the first signal. For example, the third resource includes 1 port for transmitting the first signal.

[0434] Optionally, "associating a third resource with a second resource" includes: if the network device sends at least one third resource to the first terminal device, then the at least one third resource is associated with the same second resource; or, if the network device sends a set of third resources to the first terminal device, then the set of third resources is associated with the second resource.

[0435] Optionally, the first signal is used by the network device to determine the port, precoding, and / or layer number used by the first terminal device to send the PUSCH. It should be understood that determining the port for sending the PUSCH allows the determination of the layer number and precoding, as the port for sending the PUSCH implicitly indicates the layer number and precoding.

[0436] Optionally, the second signal is used by the first terminal device to determine the precoding for transmitting the first signal.

[0437] For example, the third resource set is an SRS resource set, the third resource is an SRS resource, the second resource is an NZP CSI-RS resource, the first signal is an SRS, and the second signal is a CSI-RS.

[0438] It should be understood that there is no fixed order between steps S4101 and S4102. Step S4101 can occur before, after, or simultaneously with step S4102.

[0439] In step S4103, the network device sends a second signal to the first terminal device.

[0440] In some embodiments, the first terminal device receives a second signal sent by the network device.

[0441] In step S4104, the first terminal device determines the precoding for transmitting the first signal based on the first parameter and the second signal.

[0442] In step S4105, the first terminal device sends a first signal to the network device according to the pre-encoding.

[0443] Optionally, "the first terminal device determines the precoding for transmitting the first signal based on the first parameter and the second signal" includes: determining the channel information between the network device and the first terminal device based on the second signal, determining the channel information between the second terminal device and the first terminal device based on the first parameter, and then determining the precoding for transmitting the first signal based on the two channel information.

[0444] Optionally, if the network device sends at least one first parameter to the first terminal device, then the channel information between at least one second terminal device and the first terminal device is determined based on the at least one first parameter, and then the precoding for transmitting the first signal is determined based on the channel information between the network device and the first terminal device and the channel information between at least one second terminal device and the first terminal device.

[0445] Optionally, if the network device sends at least one first parameter to the first terminal device, the network device may also send a second parameter to the first terminal device. The second parameter indicates that the channel information between the first terminal device and one or more second terminal devices is determined based on one or more of the at least one first parameter, and the precoding for transmitting the first signal is determined based on the channel information between the network device and the first terminal device and the channel information between the first terminal device and one or more second terminal devices.

[0446] Optionally, the second parameter is carried on either the DCI or the MAC-CE. Further optionally, if the first signal is aperiodic, the DCI is the DCI that triggers the first signal; if the first signal is semi-continuous, the MAC-CE is the MAC-CE that activates the first signal; or, for periodic SRS, semi-continuous SRS, and aperiodic SRS, the second parameter can be carried on the MAC-CE.

[0447] For example, the network device sends a first parameter to the first terminal device, and the first terminal device determines a first parameter table based on the first parameter; then, the network device sends a second parameter to the first terminal device, the second parameter indicating at least one row in the first parameter table; the first terminal device then determines the precoding for transmitting the first signal based on the channel information corresponding to the at least one row in the first parameter table indicated by the second parameter, combined with the channel information between the network device and the first terminal device. The second parameter includes:

[0448] Example 1: Bitmap; where the length of the bitmap is the same as the number of rows in the first parameter table, each bit corresponds to one row in the first parameter table, and when the value of a bit is the first value, the channel information in the corresponding row of the first parameter table is used to determine the precoding for transmitting the first signal. For example, the first value is '1';

[0449] Example 2: Row index; wherein, the second parameter includes at least one row index, each row index corresponds to a row in the first parameter table, and the channel information in the row in the first parameter table corresponding to the row index included in the second parameter is used to determine the precoding for transmitting the first signal.

[0450] For example, assuming the channel information between the network device and the first terminal device in a frequency unit is H1, and the channel information between the first terminal device and the second terminal device in the frequency unit is H2, then the precoding used to transmit the first signal in the frequency unit is W. m Among them, W m Let W be the first m columns (i.e., the m right singular vectors corresponding to the m largest singular values), where m represents the quantity of the third resource, and W = V[(V H V) -1 ] H , Let H1 be the first m columns of the right singular vectors obtained after SVD decomposition (i.e., the m columns of right singular vectors corresponding to the m largest singular values). H2 represents the first n columns of the right singular vector obtained after SVD decomposition (i.e., the n columns of right singular vectors corresponding to the n largest singular values), where n represents the number of layers suppressing UE-UE CLI. The rows of H1 represent the antenna ports of the network devices, and the columns of H1 represent the antenna ports of the first terminal device. Similarly, the rows of H2 represent the antenna ports of the second terminal device, and the columns of H2 represent the antenna ports of the first terminal device. It should be understood that the above method is the Zero forcing (ZF) algorithm. Using this algorithm to determine the precoding for transmitting SRS and PUSCH can effectively suppress UE-UE CLI, that is, effectively suppress interference from the first terminal device to the second terminal device.

[0451] Optionally, the network device sends parameter n to the first terminal device. It should be understood that the same parameter n is used for all first parameters. Optionally, the network device sends at least one parameter n to the terminal device, with each parameter n corresponding to a first parameter. For example, each row of the first parameter table also includes a parameter n. For example, the candidate values ​​for parameter n are 1, 2, 3, 4, etc.

[0452] Optionally, parameter n can be carried on MAC-CE or higher-layer signaling.

[0453] Optionally, before performing step S4101, the first terminal device reports a third capability to the network device. The third capability indicates that the first terminal device can suppress the maximum number of CLI layers for a second terminal device when sending PUSCH, i.e., the maximum value of parameter n.

[0454] It should be understood that the number of precodes used to send the first signal is the same as the number of third resources, and the precodes correspond one-to-one with the third resources. The terminal device sends a first signal according to each third resource and its corresponding precode.

[0455] In some embodiments, the network device receives a first signal sent by the first terminal device.

[0456] In step S4106, the network device determines the port, precoding and / or layer number for the first terminal device to send the PUSCH based on the first signal, and instructs the first terminal device to send the PUSCH.

[0457] Step S4107: The first terminal device sends PUSCH according to the instructions of the network device.

[0458] In some embodiments, the network device receives a PUSCH sent by the first terminal device.

[0459] In some embodiments, the port and / or precoding for transmitting PUSCH by the first terminal device is the same as the port and / or precoding for transmitting the first signal (SRS), thereby suppressing its interference with the second terminal device.

[0460] In another embodiment other than Figure 4, the first step may be different, while the remaining steps may be the same. Specifically, the first step S4101 can be replaced by the following step S4201:

[0461] In step S4201, the first terminal device sends a first parameter to the network device. The first parameter is used to indicate the channel information between the first terminal device and the second terminal device.

[0462] Optionally, the channel information between the first terminal device and the second terminal device is obtained by measurement between the terminal devices, so the terminal devices will know about the interference situation as soon as possible. Therefore, the determination of the first parameter can be reported by the terminal device to the network device.

[0463] Optionally, before step S4201, the network device sends a first resource to the first terminal device. The first resource is used by the first terminal device to send first parameters. The first resource includes:

[0464] Periodicity: The first resource includes the first period. After the network device configures the first resource to the first terminal device, the first terminal device periodically sends the first parameter to the network device. The sending period is the first period.

[0465] Semi-persistent: The network device configures at least one first resource to the first terminal device, each first resource including a first cycle; then, the network device activates / deactivates one of the first resources through MAC-CE, and the first terminal device periodically sends a first parameter to the network device according to the activated first resource, the sending period being the first cycle of the activated first resource;

[0466] Aperiodic: The network device configures at least one first resource for the first terminal device; then, the network device triggers one of the first resources via DCI or MAC-CE, and the first terminal device sends a first parameter to the network device once according to the triggered first resource;

[0467] Event triggering: The network device configures the first resource to the first terminal device; when the first event occurs, the first terminal device sends the first parameter to the network device once according to the first resource.

[0468] Optionally, the first event is: the RSRP or RSSI between the first terminal device and the second terminal device exceeds a first threshold or falls below a second threshold;

[0469] It should be understood that the channel information between the first terminal device and the second terminal device is used by the first terminal device to suppress its CLI to the second terminal device when sending PUSCH, wherein the second terminal device is a terminal device other than the first terminal device.

[0470] Optionally, "the first terminal device sending a first parameter to the network device" includes: the first terminal device sending at least one first parameter to the network device, wherein the first parameter indicates channel information between the first terminal device and a second terminal device. It should be understood that different first parameters indicate channel information between the first terminal device and different second terminal devices. It should be understood that the first terminal device may suppress its CLI to multiple second terminal devices when sending PUSCH.

[0471] Optionally, while sending the first parameter to the network device, the first terminal device may also instruct the network device to perform at least one of the following actions based on the first parameter: create a first parameter table, replace the first parameter table, replace at least one row in the first parameter table, add at least one row in the first parameter table, or delete at least one row in the first parameter table; wherein the first parameter table includes at least one first parameter. For example, the network device maintains a first parameter table; if the first parameter table is empty, the network device creates a first parameter table based on the first parameter sent by the first terminal device; if the first parameter table is not empty, the network device, according to the instructions of the first terminal device, replaces the first parameter table based on the first parameter, or replaces at least one row in the first parameter table, or adds at least one row, or deletes at least one row, etc.

[0472] The remaining steps in this embodiment can be referred to steps S4102 to S4107.

[0473] The uplink transmission method based on non-codebook provided in this disclosure can effectively suppress UE-UE CLI at the source and improve downlink performance. This method is applicable to subband overlapping full-duplex, subband non-overlapping full-duplex, flexible built-in duplex, IBD, etc.

[0474] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0475] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0476] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0477] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute 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 relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using 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 configuring the hardware circuit 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. Furthermore, 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), or a Deep Learning Processing Unit (DPU).

[0478] Figure 5A is a schematic diagram of a first terminal according to an embodiment of this disclosure. The first terminal 5100 is used to perform any of the above methods. In some embodiments, as shown in Figure 5A, the first 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 a first precoding based on first information and CSI-RS resources, wherein the first information includes channel information between the first terminal and the second terminal, and the first precoding includes at least one precoding; the transceiver module 5101 is used to send a PUSCH to a network device according to a second precoding in the first precoding, wherein the second precoding includes at least one precoding.

[0479] Optionally, the transceiver module 5101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the first terminal in any of the above methods, which will not be described in detail here. Optionally, the processing module 5102 is used to perform at least one of the other steps performed by the first terminal in any of the above methods, which will not be described in detail here.

[0480] Figure 5B is a schematic diagram of the structure of a network device proposed in an embodiment of this disclosure. The network device 5200 is used to perform any of the above methods. In some embodiments, as shown in Figure 5B, the network device 5200 may include at least one of a transceiver module 5201, a processing module 5202, etc. In some embodiments, the transceiver module 5201 is used to receive a PUSCH sent by a first terminal, wherein the PUSCH is sent according to a second precoding in a first precoding, the first precoding being determined based on first information and CSI-RS resources, the first information including channel information between the first terminal and the second terminal, the first precoding including at least one precoding, and the second precoding including at least one precoding.

[0481] Optionally, the transceiver module 5201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be described in detail here. Optionally, the processing module 5202 is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be described in detail here.

[0482] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0483] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0484] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0485] Figure 6A is a schematic diagram of the structure of the communication device 6100 proposed in an embodiment of this disclosure. The communication device 6100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0486] As shown in Figure 6A, the communication device 6100 is used to execute any of the above methods. In some embodiments, the communication device 6100 includes one or more processors 6101. The processor 6101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to execute any of the above methods. Optionally, one or more processors 6101 are used to invoke instructions to cause the communication device 6100 to execute any of the above methods.

[0487] 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 optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0488] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data and / or instructions. Optionally, one or more processors 6101 are used to invoke instructions stored in the memory 6103 to cause the communication device 6100 to perform any of the above methods. Optionally, all or part of the memory 6103 may also be located outside the communication device 6100. In optional embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6103 and can be used to receive data and / or instructions from the memory 6103 or other devices, and can be used to send data and / or instructions to the memory 6103 or other devices. For example, the interface circuit 6104 can read data and / or instructions stored in the memory 6103 and can be used to send data and / or instructions to the memory 6103 or other devices. For example, the interface circuit 6104 can read data and / or instructions stored in the memory 6103 and send the data and / or instructions to the processor 6101.

[0489] The communication device 6100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 6100 described in this 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 a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (6) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (7) others, etc.

[0490] Figure 6B is a schematic diagram of the structure of chip 6200 according to an embodiment of this disclosure. For cases where the communication device 6100 can be a chip or a chip system, please refer to the schematic diagram of chip 6200 shown in Figure 6B, but it is not limited thereto.

[0491] Chip 6200 includes one or more processors 6201. Chip 6200 is used to perform any of the methods described above.

[0492] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data and / or instructions. Optionally, all or part of the memories 6203 may be located outside of chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data and / or instructions from memory 6203 or other devices, and interface circuit 6202 can be used to send data and / or instructions to memory 6203 or other devices. For example, interface circuit 6202 can read data and / or instructions stored in memory 6203 and send the data and / or instructions to processor 6201.

[0493] 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 and / or instruction interaction 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.

[0494] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0495] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 6100, cause the communication device 6100 to perform 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 not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0496] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by the communication device 6100, cause the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0497] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods. Industrial applicability

[0498] In non-codebook-based uplink transmission, the first terminal determines the uplink precoding based on the channel information between itself and other terminals. Based on the determined uplink precoding, the uplink transmission can effectively suppress interference to the downlink transmission of other terminals and improve communication performance.

Claims

An uplink transmission method is performed by a first terminal, and the method comprises: determining a first precoding according to first information and channel state information reference signal (CSI-RS) resource, wherein the first information comprises channel information between the first terminal and a second terminal, and the first precoding comprises at least one precoding; sending a physical uplink shared channel (PUSCH) to a network device according to a second precoding in the first precoding, wherein the second precoding comprises at least one precoding. The method of claim 1, wherein, The method further comprises: sending a sounding reference signal (SRS) to the network device according to the first precoding. The method of claim 1 or 2, wherein, The method further comprises: receiving at least one first information sent by the network device, or sending the at least one first information to the network device, wherein when the at least one first information comprises a plurality of first information, different first information in the plurality of first information corresponds to different second terminals. The method of claim 3, wherein, The method further comprises: receiving second information sent by the network device, wherein the second information is used to indicate first information for determining the first precoding in the at least one first information. The method of claim 4, wherein the second information comprises a bit map, and the bit map comprises at least one bit corresponding to the at least one first information, wherein a bit with a first value in the bit map corresponds to first information used to determine the first precoding; or the second information comprises an index of first information used to determine the first precoding, wherein different first information corresponds to different indexes. The method of any one of claims 3 to 5, wherein, The method further comprises: receiving indication information sent by the network device, or sending the indication information to the network device; wherein the indication information is used to indicate that the first terminal or the network device processes the at least one first information. The method of claim 6, wherein, The indication information is used to indicate at least one of the following: replacing first information in the at least one first information; adding new first information in the at least one first information; deleting first information in the at least one first information. The method of any one of claims 3 to 7, wherein, The method further comprises: receiving at least one first resource sent by the network device, wherein the at least one first resource is used for the first terminal to send the at least one first information. The method of claim 8, wherein, The sending of the at least one first information to the network device comprises one of the following: sending the at least one first information to the network device according to the at least one first resource; sending the at least one first information to the network device according to a first resource activated or triggered in the at least one first resource; sending the at least one first information to the network device according to the at least one first resource when a first event occurs. The method of claim 9, wherein, The first event comprises at least one of the following: a measurement between the first terminal and the second terminal is greater than a first threshold; a measurement between the first terminal and the second terminal is less than a second threshold. The method of any one of claims 1 to 10, wherein, The method further comprises: receiving third information sent by the network device, the third information being used for indicating interference suppression information of the first terminal to the second terminal. The method of any one of claims 1 to 11, wherein, The method further includes: sending capability information to the network device, the capability information being used for indicating interference suppression capability of the first terminal to one or more second terminals; the interference suppression capability includes at least one of the following: a first capability, the first capability being used for indicating that the first terminal supports interference suppression to a second terminal in non-codebook-based uplink transmission; a second capability, the second capability being used for indicating that the first terminal supports a maximum number of second terminals simultaneously performing interference suppression; a third capability, the third capability being used for indicating that the first terminal supports a maximum number of layers when performing interference suppression to one second terminal. The method of claim 12, wherein the third information sent by the network device is determined according to the third capability. An uplink transmission method, performed by a network device, the method further includes: receiving a PUSCH sent by a first terminal, wherein the PUSCH is sent according to a second precoding in a first precoding, the first precoding is determined according to first information and CSI-RS resource, the first information includes channel information between the first terminal and a second terminal, and the first precoding includes at least one precoding, wherein the second precoding includes at least one precoding. The method of claim 14, wherein, The method further includes: receiving an SRS sent by the first terminal, the SRS being sent according to the first precoding. The method of claim 14 or 15, wherein, The method further includes: sending at least one first information to the first terminal, or receiving the at least one first information sent by the first terminal, wherein when the at least one first information includes a plurality of first information, different first information in the plurality of first information corresponds to different second terminals. The method of claim 16, wherein, The method further includes: sending second information to the first terminal, the second information being used for indicating first information for determining the first precoding in the at least one first information. The method of claim 17, wherein the second information includes a bit map, the bit map including at least one bit, the at least one bit corresponding to the at least one first information one by one, wherein a bit with a first value in the bit map corresponds to first information used for determining the first precoding; or the second information includes an index of first information used for determining the first precoding, wherein different first information corresponds to different indexes. The method of any one of claims 16 to 18, wherein, The method further includes: sending indication information to the first terminal, or receiving the indication information sent by the first terminal; wherein the indication information is used for indicating that the first terminal or the network device processes the at least one first information. The method of claim 19, wherein, The indication information is used for indicating at least one of the following: replacing first information in the at least one first information; adding new first information in the at least one first information; deleting first information in the at least one first information. The method of any one of claims 16 to 20, wherein, The method further includes: The first terminal is sent at least one first resource, wherein the at least one first resource is used for the first terminal to send the at least one first information. The method of claim 21, wherein, The at least one first information is sent by the terminal according to a period indicated by the at least one first resource; or, The at least one first information is sent by the terminal according to a first resource in the at least one first resource being activated or triggered; or, The at least one first information is sent by the terminal according to the at least one first resource when a first event occurs. The method of claim 22, wherein, The first event comprises at least one of: A measurement between the first terminal and the second terminal is greater than a first threshold; A measurement between the first terminal and the second terminal is less than a second threshold. The method of any one of claims 14 to 23, wherein, The method further comprises: The first terminal is sent third information, wherein the third information is used for indicating interference suppression information of the first terminal to the second terminal. The method of any one of claims 14 to 24, wherein, The method further comprises: The first terminal is received capability information sent by the terminal, wherein the capability information is used for indicating interference suppression capability of the first terminal to one or more second terminals; the interference suppression capability comprises at least one of: A first capability, wherein the first capability is used for indicating that the first terminal supports interference suppression to a second terminal in non-codebook uplink transmission; A second capability, wherein the second capability is used for indicating that the first terminal supports a maximum number of second terminals simultaneously performing interference suppression; A third capability, wherein the third capability is used for indicating a maximum layer number of the first terminal when performing interference suppression to one second terminal. The method of claim 25, wherein, The third information sent by the network device is determined according to the third capability. A communication device, wherein, The communication device is used to execute the method of any one of claims 1 to 13, or any one of claims 14 to 26. A communication system comprises a first terminal and a network device, wherein, The first terminal is configured to implement the method of any one of claims 1 to 13; The network device is configured to implement the method of any one of claims 14 to 26. A storage medium, wherein the storage medium stores instructions, wherein, When the instructions run on the communication device, the communication device executes the method of any one of claims 1 to 13, or any one of claims 14 to 26. A program product comprising at least one of a program, instructions, wherein At least one of the program, instructions is executed by the communication device to implement the method of any one of claims 1 to 13, or any one of claims 14 to 26.

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