Signal receiving, transmitting method and apparatus, communication device, and storage medium

Abstract

The present disclosure relates to the technical field of communication, in particular to a signal receiving method and device, a signal sending method and device, a communication device and a storage medium, wherein the signal receiving method comprises: determining a first SD pattern in at least one SD pattern associated with a CSI-RS resource according to a type of downlink transmission; and receiving a CSI-RS according to the first SD pattern. According to the present disclosure, it is beneficial to ensure that the SD pattern based on which a terminal receives a CSI-RS is the same as the SD pattern based on which a network device sends the CSI-RS, and then it is beneficial to ensure that the terminal and the network device have consistent understanding of the SD pattern of the CSI-RS, so as to ensure accurate measurement of the CSI-RS by the terminal and to obtain accurate CSI.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and more specifically, to signal receiving methods, signal transmitting methods, signal receiving devices, signal transmitting devices, terminals, network devices, communication devices, and storage media. Background Technology

[0002] Network devices can transmit Channel State Information Reference Signals (CSI-RS), and terminals can measure CSI-RS to obtain channel state information, which is then sent to the network device as a Channel State Information Report (CSI report). The network device can then determine the channel state based on this information. However, with the development of communication technology, some technical problems in this process urgently need to be solved. Summary of the Invention

[0003] The embodiments of this disclosure provide signal receiving and transmitting methods and apparatus, communication devices and storage media to solve technical problems in the related art.

[0004] According to a first aspect of the present disclosure, a signal receiving method is provided, executed by a terminal, the method comprising: determining a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission; and receiving CSI-RS according to the first SD pattern.

[0005] According to a second aspect of the present disclosure, a signal transmission method is provided, performed by a network device, the method comprising: determining a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission; and transmitting CSI-RS according to the first SD pattern.

[0006] According to a third aspect of the present disclosure, a signal receiving apparatus is provided, the apparatus comprising: a processing module, configured to determine a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a channel state information reference signal (CSI-RS) resource based on the type of downlink transmission; and a transceiver module, configured to receive CSI-RS according to the first SD pattern.

[0007] According to a fourth aspect of the present disclosure, a signal transmitting apparatus is provided, the apparatus comprising: a processing module, configured to determine a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a channel state information reference signal (CSI-RS) resource based on the type of downlink transmission; and a transceiver module, configured to transmit CSI-RS according to the first SD pattern.

[0008] According to a fifth aspect of the present disclosure, a terminal is provided, comprising: one or more processors; and a memory coupled to the one or more processors, the memory storing executable instructions, which, when executed by the one or more processors, cause the terminal to perform the signal receiving method described in the first aspect.

[0009] According to a sixth aspect of the present disclosure, a network device is provided, comprising: one or more processors; and a memory coupled to the one or more processors, the memory storing executable instructions, which, when executed by the one or more processors, cause the network device to perform the signal transmission method described in the second aspect.

[0010] According to a seventh aspect of the present disclosure, a signal transceiver method is provided, comprising: a network device determining a first SD pattern within at least one spatial adjustment scheme (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission; the network device transmitting CSI-RS to a terminal according to the first SD pattern; the terminal determining the first SD pattern within at least one SD pattern associated with the CSI-RS resource based on the type of downlink transmission; and the terminal receiving the CSI-RS transmitted by the network device according to the first SD pattern.

[0011] According to an eighth aspect of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the signal receiving method of the first aspect, and the network device is configured to implement the signal transmitting method of the second aspect.

[0012] According to a ninth aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform the signal receiving method as described in the first aspect and / or the signal transmitting method as described in the second aspect.

[0013] According to the embodiments of this disclosure, it is advantageous to ensure that the SD pattern on which the terminal receives CSI-RS is based is the same as the SD pattern on which the network device sends CSI-RS. This is beneficial to ensure that the terminal and the network device have a consistent understanding of the SD pattern of CSI-RS, thereby ensuring that the terminal accurately measures CSI-RS to obtain accurate CSI. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0016] Figure 2 This is an interactive schematic diagram illustrating a signal transmission and reception method according to an embodiment of the present disclosure.

[0017] Figure 3A This is a spatial standard diagram illustrating a downlink transmission type according to an embodiment of the present disclosure.

[0018] Figure 3B This is a spatial standard schematic diagram illustrating another downlink transmission type according to an embodiment of the present disclosure.

[0019] Figure 4 This is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure.

[0020] Figure 5 This is a schematic diagram illustrating the spatial adjustment system and sub-configuration relationship according to embodiments of the present disclosure.

[0021] Figure 6A This is a schematic diagram illustrating the structure of a first instruction signaling according to an embodiment of the present disclosure.

[0022] Figure 6B This is a schematic diagram illustrating another first instruction signaling structure according to an embodiment of the present disclosure.

[0023] Figure 7 This is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure.

[0024] Figure 8 This is a schematic block diagram of a signal receiving device according to an embodiment of the present disclosure.

[0025] Figure 9 This is a schematic block diagram of a signal transmitting device according to an embodiment of the present disclosure.

[0026] Figure 10 This is a schematic diagram of the structure of the communication device proposed in the embodiments of this disclosure.

[0027] Figure 11 This is a schematic diagram of the chip structure proposed in the embodiments of this disclosure. Detailed Implementation

[0028] Embodiments of this disclosure provide signal receiving and transmitting methods and apparatus, communication devices, and storage media.

[0029] In a first aspect, embodiments of this disclosure provide a signal receiving method executed by a terminal, the method comprising: determining a first SD pattern within at least one spatial adjustment scheme (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource, based on the type of downlink transmission; and receiving CSI-RS according to the first SD pattern.

[0030] In the above embodiments, the SD pattern on which the terminal receives CSI-RS is not fixed, but can be variable. Specifically, the terminal can determine a first SD pattern from at least one SD pattern associated with the CSI-RS resource according to the type of downlink transmission, and receive CSI-RS according to the first SD pattern. That is, the SD pattern on which the terminal receives CSI-RS can also be different depending on the type of downlink transmission.

[0031] Therefore, it is beneficial to ensure that the SD pattern on which the terminal receives CSI-RS is based is the same as the SD pattern on which the network device sends CSI-RS. This, in turn, helps to ensure that the terminal and the network device have a consistent understanding of the SD pattern of CSI-RS, thereby ensuring that the terminal accurately measures CSI-RS and obtains accurate CSI.

[0032] In conjunction with some embodiments of the first aspect, in some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjusted MFTA; Adjusted-Action AFTM.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, the downlink transmission type is AFTM, and the terminal does not expect the Channel State Information Configuration (CSI) repot config to have a different SD pattern for activating the CSI-RS resource.

[0034] In conjunction with some embodiments of the first aspect, in some embodiments, determining a first SD pattern based on the type of downlink transmission in at least one spatial adjustment mode (SD pattern) associated with Channel State Information Reference Signal (CSI-RS) resources includes: the type of downlink transmission is AFTM, multiple SD patterns in the at least one SD pattern are active, and determining the most recently activated SD pattern as the first SD pattern among the multiple active SD patterns.

[0035] In conjunction with some embodiments of the first aspect, in some embodiments, determining a first SD pattern in at least one spatial adjustment mode (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission includes: the type of downlink transmission is AFTM, and determining the first SD pattern in the at least one SD pattern based on a first indication signaling sent by the network device.

[0036] In conjunction with some embodiments of the first aspect, in some embodiments, the first indication signaling includes at least one of the following: cell-specific signaling; radio resource control signaling; downlink control information (DCI); and control unit (MAC CE).

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, the first indication signaling is used to indicate at least one of the following: an identifier of a CSI-RS resource; an identifier of an SD pattern; an identifier of a Channel State Information Reporting Configuration (CSI reportconfig); or an identifier of a subconfig within the CSI reportconfig.

[0038] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes: determining the type of downlink transmission based on an explicit or implicit method.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, determining the type of downlink transmission in an explicit manner includes: determining the type of downlink transmission based on a second indication signaling sent by the network device.

[0040] In conjunction with some embodiments of the first aspect, in some embodiments, determining the type of downlink transmission implicitly includes: determining the type of downlink transmission based on the number of ports through which the network device transmits downlink information.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, determining the type of downlink transmission based on the number of ports of downlink information sent by the network device includes: if the first number of ports of the most recently sent downlink information by the network device is less than the second number of ports of the downlink information sent by the network device before the most recently sent downlink information, the type of downlink transmission is determined to be AFTM.

[0042] Secondly, embodiments of this disclosure provide a signal transmission method performed by a network device, the method comprising: determining a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource, based on the type of downlink transmission; and transmitting CSI-RS according to the first SD pattern.

[0043] In the above embodiments, the SD pattern on which the network device sends CSI-RS may not be fixed, but may be variable. Specifically, the network device may determine a first SD pattern from at least one SD pattern associated with the CSI-RS resource according to the type of downlink transmission, and send CSI-RS according to the first SD pattern in order to meet the relevant requirements of the downlink transmission type, such as energy saving requirements.

[0044] In conjunction with some embodiments of the second aspect, in some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjusted MFTA; Adjusted-Assembled AFTM.

[0045] In conjunction with some embodiments of the second aspect, in some embodiments, the downlink transmission type is AFTM, and the channel state information configuration CSI repot config activates an SD pattern for the CSI-RS resource.

[0046] In conjunction with some embodiments of the second aspect, in some embodiments, determining a first SD pattern based on the type of downlink transmission in at least one spatial adjustment mode (SD pattern) associated with Channel State Information Reference Signal (CSI-RS) resources includes: the type of downlink transmission is AFTM, multiple SD patterns in the at least one SD pattern are active, and determining the most recently activated SD pattern as the first SD pattern among the multiple active SD patterns.

[0047] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes: the downlink transmission type is AFTM, sending a first indication signaling to the terminal, wherein the first indication signaling is used to instruct the terminal to determine the first SD pattern in at least one SD pattern, the first SD pattern being used by the terminal to receive CSI-RS sent by the network device.

[0048] In conjunction with some embodiments of the second aspect, in some embodiments, the first indication signaling includes at least one of the following: cell-specific signaling; radio resource control signaling; downlink control information (DCI); and control unit (MAC CE).

[0049] In conjunction with some embodiments of the second aspect, in some embodiments, the first indication signaling is used to indicate at least one of the following: an identifier of a CSI-RS resource; an identifier of an SD pattern; an identifier of a Channel State Information Reporting Configuration (CSI reportconfig); or an identifier of a subconfig within the CSI reportconfig.

[0050] Thirdly, embodiments of this disclosure provide a signal receiving apparatus, the apparatus comprising: a processing module, configured to determine a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission; and a transceiver module, configured to receive CSI-RS according to the first SD pattern.

[0051] Fourthly, embodiments of this disclosure provide a signal transmission apparatus, the apparatus comprising: a processing module, configured to determine a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission; and a transceiver module, configured to transmit CSI-RS according to the first SD pattern.

[0052] Fifthly, embodiments of this disclosure provide a terminal comprising: one or more processors; and a memory coupled to the one or more processors, the memory storing executable instructions, which, when executed by the one or more processors, cause the terminal to perform the signal receiving method described in the first aspect and the optional embodiments of the first aspect.

[0053] In a sixth aspect, embodiments of this disclosure provide a network device comprising: one or more processors; and a memory coupled to the one or more processors, the memory storing executable instructions which, when executed by the one or more processors, cause the network device to perform the signal transmission method described in the second aspect and optional embodiments of the second aspect.

[0054] In a seventh aspect, embodiments of this disclosure provide a signal transmission and reception method, comprising: a network device determining a first SD pattern within at least one spatial adjustment scheme (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission; the network device transmitting CSI-RS to a terminal based on the first SD pattern; the terminal determining the first SD pattern within at least one SD pattern associated with a CSI-RS resource based on the type of downlink transmission; and the terminal receiving the CSI-RS transmitted by the network device based on the first SD pattern.

[0055] Eighthly, embodiments of this disclosure provide a communication system comprising: a terminal and a network device, wherein the terminal is configured to implement the signal receiving method described in the first aspect and optional embodiments thereof, and the network device is configured to implement the signal transmitting method described in the second aspect and optional embodiments thereof.

[0056] Ninthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the signal receiving method described in the first aspect and optional embodiments of the first aspect, and / or the signal transmitting method described in the second aspect and optional embodiments of the second aspect.

[0057] In a tenth aspect, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the signal receiving method as described in the first aspect and optional embodiments of the first aspect, and / or the signal transmitting method as described in the second aspect and optional embodiments of the second aspect.

[0058] In one aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the signal receiving method as described in the first aspect and optional embodiments of the first aspect, and / or the signal transmitting method as described in the second aspect and optional embodiments of the second aspect.

[0059] It is understood that the aforementioned signal receiving device, signal transmitting device, communication equipment, communication system, storage medium, program product, and computer program are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0060] This disclosure provides methods and apparatus for receiving and transmitting signals, communication devices, and storage media. In some embodiments, the terms "signal receiving method," "signal transmitting method," "information processing method," and "communication method" can be used interchangeably; the terms "signal receiving apparatus," "signal transmitting apparatus," "information processing apparatus," and "communication apparatus" can be used interchangeably; and the terms "information processing system" and "communication system" can be used interchangeably.

[0061] 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.

[0062] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0063] 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.

[0064] In the embodiments of this disclosure, unless otherwise stated, elements expressed in the singular, such as “a,” “an,” “the,” “the,” “the,” “the,” “the,” “the,” “this,” etc., may mean “one and only one,” or “one or more,” “at least one,” etc.

[0065] For example, when using articles such as "a", "an", and "the" in translation, the noun following the article can be understood as either a singular or a plural form.

[0066] In the embodiments of this disclosure, "multiple" refers to two or more.

[0067] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0068] 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 B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0069] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); 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, C, etc.

[0070] The prefixes such as "first" and "second" in the embodiments of this disclosure are only for distinguishing different descriptive objects and do not constitute restrictions on the position, order, priority, number or content of the descriptive objects. For the description of the descriptive objects, please refer to the description in the claims or the context of the embodiments. The use of prefixes should not constitute unnecessary restrictions.

[0071] For example, if the descriptive object is "field," then 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 "level," then 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; there can be one or more. For example, in "first device," the number of "devices" can be one or more. In addition, objects modified by different prefixes can be the same or different. For example, if the descriptive object 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 descriptive object 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.

[0072] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0073] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0074] 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”.

[0075] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0076] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0077] 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.

[0078] 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 subscriberstation, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, and client can be used interchangeably.

[0079] 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.

[0080] 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.

[0081] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0082] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0083] 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.

[0084] Figure 1 This is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0085] like Figure 1 As shown, the communication system 100 includes a terminal 101 and a network device 102, wherein the network device includes at least one of the following: an access network device and a core network device.

[0086] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0087] 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, but is not limited to, 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.

[0088] 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 the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0089] 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.

[0090] 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.

[0091] 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.

[0092] The following embodiments of this disclosure can be applied to Figure 1 The communication system 100 shown, or a part thereof, but not limited to it. Figure 1 The entities shown are illustrative; a communication system may include... Figure 1 All or part of the main body, or may include Figure 1 Other entities besides the main body, the number and form of each entity are arbitrary, each entity can be physical or virtual, the connection relationship between the entities is illustrative, the entities can be unconnected or connected, and 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.

[0093] 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), Futuregeneration 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).

[0094] Figure 2 This is an interactive schematic diagram illustrating a signal transmission and reception method according to an embodiment of the present disclosure.

[0095] Step S201: The network device sends CSI-RS.

[0096] In some embodiments, the network device determines a first SD pattern.

[0097] In some embodiments, the network device sends CSI-RS according to a first SD pattern.

[0098] In some embodiments, the network device determines a first SD pattern within at least one SD pattern associated with CSI-RS resources.

[0099] In some embodiments, the network device determines the type of downlink transmission.

[0100] In some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjustment-First (MFTA); Adjustment-Adjustment-First (AFTM).

[0101] In some embodiments, the network device determines a first SD pattern within at least one SD pattern associated with CSI-RS resources, based on the type of downlink transmission.

[0102] In some embodiments, the downlink transmission type is AFTM, and the network device activates an SD pattern for the CSI-RS resource through CSI repot configuration.

[0103] In some embodiments, the downlink transmission type is AFTM, and multiple SD patterns in at least one SD pattern are active. The network device determines the most recently activated SD pattern as the first SD pattern among the multiple active SD patterns.

[0104] In some embodiments, the downlink transmission type is AFTM, and a first indication signaling is sent to the terminal, wherein the first indication signaling is used to instruct the terminal to determine the first SD pattern in at least one SD pattern, and the first SD pattern is used by the network device to send CSI-RS.

[0105] Step S202, the terminal receives CSI-RS

[0106] In some embodiments, the terminal determines a first SD pattern.

[0107] In some embodiments, the terminal receives CSI-RS according to a first SD pattern.

[0108] In some embodiments, the terminal determines a first SD pattern within at least one SD pattern associated with CSI-RS resources.

[0109] In some embodiments, the terminal determines the type of downlink transmission.

[0110] In some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjustment-First (MFTA); Adjustment-Adjustment-First (AFTM).

[0111] In some embodiments, the terminal determines a first SD pattern within at least one SD pattern associated with CSI-RS resources, based on the type of downlink transmission.

[0112] In some embodiments, the downlink transmission type is AFTM, and the terminal does not expect the Channel State Information Configuration (CSI) repot config to have a different SD pattern for activating the CSI-RS resource.

[0113] In some embodiments, determining a first SD pattern based on at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, according to the type of downlink transmission, includes:

[0114] The downlink transmission type is AFTM, and multiple SD patterns in the at least one SD pattern are in an active state. Among the multiple active SD patterns, the latest active SD pattern is determined to be the first SD pattern.

[0115] In some embodiments, determining a first SD pattern based on at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, according to the type of downlink transmission, includes:

[0116] The downlink transmission type is AFTM, and the first SD pattern is determined in the at least one SD pattern according to the first indication signaling sent by the network device.

[0117] In some embodiments, the first indication signaling includes at least one of the following: cell-specific signaling; radio resource control signaling; downlink control information (DCI); and control unit (MAC CE).

[0118] In some embodiments, the first indication signaling is used to indicate at least one of the following: the identifier of the CSI-RS resource; the identifier of the SD pattern; the identifier of the Channel State Information Reporting Configuration (CSI report config); and the identifier of a subconfig in the CSI report config.

[0119] In some embodiments, the terminal determines the type of downlink transmission either explicitly or implicitly.

[0120] In some embodiments, determining the type of downlink transmission in an explicit manner includes: determining the type of downlink transmission based on a second indication signaling sent by the network device.

[0121] In some embodiments, determining the type of downlink transmission implicitly includes determining the type of downlink transmission based on the number of ports through which the network device sends downlink information.

[0122] In some embodiments, determining the type of downlink transmission based on the number of ports of downlink information sent by the network device includes: if the first number of ports of the most recent downlink information sent by the network device is less than the second number of ports of the downlink information sent by the network device before the most recent downlink information sent, the type of downlink transmission is determined to be AFTM.

[0123] The communication method involved in the embodiments of this disclosure may include at least one of steps S201 to S202. For example, step S201 may be implemented as a separate embodiment, and step S202 may be implemented as a separate embodiment, but are not limited thereto.

[0124] In some embodiments, steps S201 and S202 may be performed in an alternate order or simultaneously.

[0125] In some embodiments, step S201 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0126] In some embodiments, step S202 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0127] In some embodiments, see Figure 2 Other optional implementation methods described before or after the corresponding instruction manual.

[0128] In some embodiments, the network device may send a Channel State Information Reference Signal (CSI-RS), and the terminal may measure the CSI-RS to obtain channel state information and send the channel state information to the network device, so that the network device can determine the channel state.

[0129] In some embodiments, the network device may send a Channel State Information Report Configuration (CSI reportconfig) to the terminal, and the terminal may receive CSI-RS and / or send a CSI report to the network device according to the CSI report configuration.

[0130] In some embodiments, network devices may adjust the spatial pattern for certain reasons. In some embodiments, adjusting the spatial pattern includes at least one of the following: adjusting the number of Transmission Resource Units (TxRUs) and adjusting the number of antenna elements, wherein antenna elements may also be referred to as spatial elements.

[0131] For example, when network devices are in a Network Energy Saving (NES) scenario, in order to reduce the power consumption of the network devices, the number of downlink spatial elements can be dynamically reduced based on the dynamic changes in transmission load, thereby reducing the energy consumption of the network devices.

[0132] In some embodiments, the network device may adjust the number of spatial elements for downlink transmission in different ways to correspond to different downlink transmission types. For example, the downlink transmission types include at least one of the following: Measurement first then adaptation (MFTA) and Adaptation first then measurement (AFTM).

[0133] In some embodiments, the CSI report config may include at least one subconfig. In some embodiments, different subconfigurations may correspond to different spatial adaptation (SD) patterns and / or different power adaptation (PD) patterns.

[0134] For example, based on multiple sub-configurations, the terminal can measure CSI-RS according to various SD or PD patterns. This helps to ensure that CSI corresponding to various SD and / or PD patterns can be obtained, so as to more comprehensively and accurately characterize the channel state of different patterns, which is beneficial to the further scheduling of subsequent data.

[0135] It should be noted that the following embodiments mainly use SD patterns to illustrate the technical solutions of this disclosure. In some embodiments, SD patterns can be replaced with PD patterns, and in some embodiments, SD patterns can be replaced with SD patterns and / or PD patterns.

[0136] For example, when network devices are in NES mode, they can achieve energy savings by adjusting the spatial format. One example is reducing the number of TxRUs. Due to the reduced number of TxRUs, the network device can only perform downlink transmissions based on a subset of SD patterns.

[0137] In some embodiments, the downlink transmission content includes at least one of the following: physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), CSI-RS, and demodulation reference signal (DMRS).

[0138] Taking downstream transmissions including CSI-RS as an example, an SD pattern can be configured through a subconfig. A subconfig is associated with both the SD pattern and a CSI-RS resource. A CSI-RS resource, in turn, can be associated with the SD pattern associated with its corresponding subconfig. Since a CSI-RS resource can be associated with at least one subconfig, it can therefore be associated with at least one SD pattern.

[0139] In some embodiments, the SD pattern and the number of antenna ports can be in one-to-one correspondence. For example, SD pattern#1 corresponds to 32 antenna ports, and SD pattern#2 corresponds to 16 antenna ports.

[0140] In some embodiments, the SD pattern corresponds to the number of antenna elements. For example, for a CSI-RS resource with 16 antenna ports, SD pattern#1 corresponds to 32 antenna elements, and SD pattern#2 corresponds to 16 antenna elements.

[0141] In some embodiments, when a subconfig activates a certain SD pattern, the network device sends CSI-RS to the terminal based on that SD pattern on the CSI-RS resource associated with the subconfig.

[0142] The terminal can determine the active subconfig, and thus determine that the SD pattern associated with the subconfig is active. Based on the active SD pattern, the terminal can receive CSI-RS sent by the network device in the CSI-RS resource associated with the active subconfig.

[0143] However, the problem is that when network devices are in NES mode, due to the reduced number of TxRUs, they can only send CSI-RS based on a portion of the active SD patterns. The terminal is unaware that the network device can only send CSI-RS based on a portion of the active SD patterns due to the reduced number of TxRUs. Therefore, the terminal will still receive CSI-RS based on all active SD patterns. This results in inaccurate CSI information obtained by the terminal from the CSI-RS, affecting the accuracy of the CSI report.

[0144] The technical solutions of this disclosure are illustrated below with reference to several accompanying drawings.

[0145] Figure 3A This is a spatial standard diagram illustrating a downlink transmission type according to an embodiment of the present disclosure.

[0146] In MFTA mode, network devices can keep all TxRUs and / or antenna units active when sending CSI-RS. Taking all TxRUs active as an example, since all TxRUs are active, the network device can send CSI-RS to the terminal based on each SD pattern, for example... Figure 3A As shown, network devices can send CSI-RS (i.e., transmit CSI-RS resource for port 32) to the terminal based on SD pattern #1, or they can send CSI-RS (i.e., transmit CSI-RS resource for port 16) to the terminal based on SD pattern #2.

[0147] It should be noted that, in Figure 3AAlthough the example shows a network device transmitting CSI-RS based on an SD pattern (SD pattern #1 or SD pattern #2) within a time-domain unit, this is only an example. Since all TxRUs are active, the network device can transmit CSI-RS based on one or more SD patterns in any time-domain unit. A time-domain unit includes at least one of the following: frame, subframe, time slot, or symbol.

[0148] The terminal can receive CSI-RS transmitted by the base station based on different SD patterns (also known as TxRU patterns), and generate a CSI report from the CSI obtained by measuring the CSI-RS, which is then sent to the network device. For example, the terminal can obtain one CSI from CSI-RS transmitted based on multiple SD patterns and generate one CSI report to send to the network device; or, the terminal can obtain multiple CSIs from CSI-RS transmitted based on multiple SD patterns and generate multiple CSI reports to send to the network device.

[0149] However, in MFTA mode, if the network device is in an NES scenario, it can keep as many corresponding TxRUs active as possible when sending CSI-RS, while shutting down some TxRUs for energy saving when sending PDSCH. Since the network device can alternate between sending CSI-RS and PDSCH, this requires the network device to frequently enable and disable TxRUs, i.e., frequently switch TxRU patterns. This increases the power consumption of the network device and, due to the switching time required, leads to a decrease in transmission performance. Therefore, AFTM mode was introduced based on MFTA.

[0150] Figure 3B This is a spatial standard schematic diagram illustrating another downlink transmission type according to an embodiment of the present disclosure.

[0151] In AFTM mode, network devices can disable some TxRUs and / or antenna units, keeping only some TxRUs and / or antenna units active. Taking disabling some TxRUs as an example, due to the limitation of some TxRUs being disabled, the network device can only send CSI-RS to the terminal based on SDpattern#2 (i.e., transmitting the CSI-RS resource of port 16), and cannot send CSI-RS to the terminal based on SDpattern#1 (i.e., transmitting the CSI-RS resource of port 32).

[0152] For example Figure 3BAs shown, the network device first sends CSI-RS to the terminal based on SD pattern #1, indicating that SD pattern #1 is active. Then, the network device decides to disable some TxRUs. Since only some TxRUs are active, the network device can only send CSI-RS to the terminal based on SD pattern #2. The terminal should then be able to measure the CSI corresponding to the CSI-RS on port 16 (however, due to the technical issues described below, current terminals cannot perform this operation), and can then send the CSI report for port 16 to the network device. After a scheduling delay, the network device can continue sending CSI-RS to the terminal based on SD pattern #2.

[0153] exist Figure 3B In the scenario shown, under AFTM mode, although the network device changes its CSI-RS transmission from SD pattern #1 to SD pattern #2, the terminal is unaware that the network device has disabled some TxRUs and can only send CSI-RS based on SD pattern #2. From the terminal's perspective, SD pattern #1 is still active, so the terminal will still receive the CSI-RS sent by the network device according to SD pattern #1. This demonstrates a discrepancy between the terminal's and network device's understanding of the SD pattern for CSI-RS, leading to inaccurate CSI results obtained by the terminal and affecting the accuracy of the CSI report.

[0154] It should be noted that, Figure 3B The above refers to only one example of a network device sending CSI-RS based on an SD pattern in AFTM mode. In AFTM mode, the network device is not limited to sending CSI-RS to the terminal based on only one SD pattern before disabling some TxRUs, nor is it limited to sending CSI-RS to the terminal based on only one SD pattern after disabling some TxRUs.

[0155] For example, in some embodiments, the network device may send CSI-RS to the terminal based on SD pattern #1 and SD pattern #2 before disabling some TxRUs, and send CSI-RS to the terminal based only on SD pattern #2 after disabling some TxRUs.

[0156] In a first aspect, embodiments of this disclosure provide a signal receiving method. Figure 4This is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure. The signal receiving method shown in this embodiment can be executed by a terminal.

[0157] like Figure 4 As shown, the signal receiving method may include the following steps:

[0158] In step S401, a first SD pattern is determined from at least one spatial adjustment mode SD pattern associated with the Channel State Information Reference Signal (CSI-RS) resource, based on the type of downlink transmission.

[0159] In step S402, CSI-RS is received according to the first SD pattern.

[0160] It should be noted that, Figure 4 The embodiments shown can be implemented independently or in combination with at least one other embodiment of this disclosure. The specific choice can be made as needed, and this disclosure does not limit the scope of the embodiments.

[0161] In some embodiments, a CSI-RS resource can be associated with at least one SD pattern. For example, an SD pattern can be configured via a subconfig, which is associated with both an SD pattern and a CSI-RS resource. A CSI-RS resource can then be associated with the SD pattern associated with its subconfig. Since a CSI-RS resource can be associated with at least one subconfig, it can therefore be associated with at least one SD pattern.

[0162] According to embodiments of this disclosure, the SD pattern on which the terminal receives CSI-RS may not be fixed, but may vary. Specifically, the terminal may determine a first SD pattern from at least one SD pattern associated with CSI-RS resources based on the type of downlink transmission, and receive CSI-RS according to the first SD pattern. That is, the SD pattern on which the terminal receives CSI-RS may also differ depending on the type of downlink transmission.

[0163] Therefore, it is beneficial to ensure that the SD pattern on which the terminal receives CSI-RS is based is the same as the SD pattern on which the network device sends CSI-RS. This, in turn, helps to ensure that the terminal and the network device have a consistent understanding of the SD pattern of CSI-RS, thereby ensuring that the terminal accurately measures CSI-RS and obtains accurate CSI.

[0164] In some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjustment-First (MFTA); Adjustment-Adjustment-First (AFTM).

[0165] For example, when the downlink transmission type is MFTA, the terminal can receive CSI-RS according to the active SD pattern. The active SD pattern can refer to one or more active SD patterns indicated by the network device through signaling in at least one SD pattern.

[0166] For example, when the downlink transmission type is AFTM, the network device can disable some TxRUs. Due to the partial TxRU shutdown, relative to the multiple SD patterns activated before the shutdown, the network device can only send CSI-RS based on a subset of the multiple SD patterns, and the terminal is unaware that the network device can only send CSI-RS based on a subset of the SD patterns. Therefore, the technical problem faced by this application mainly exists in the case of downlink transmission type AFTM. The following examples illustrate the case of downlink transmission type AFTM.

[0167] In some embodiments, the downlink transmission type is AFTM, and the terminal does not expect the Channel State Information Configuration (CSI) report config to have a different SD pattern for activating the CSI-RS resources.

[0168] In some embodiments, the SD pattern associated with CSI-RS can be activated by the CSI report config. If the terminal determines that the downlink transmission type is AFTM, it may not expect the CSI report config to activate a different SD pattern for the CSI-RS resource. In this case, it may only need to determine that the CSI report config activates one SD pattern for the CSI-RS resource.

[0169] For example, in AFTM mode, before disabling some TxRUs, the network device sends CSI-RS to the terminal based on SD pattern #1 and SD pattern #2. After disabling some TxRUs, it sends CSI-RS to the terminal only based on SD pattern #2. When the terminal determines that the downlink transmission is in AFTM mode, it may not expect the CSI report config to activate a different SD pattern for the CSI-RS resource. Therefore, it can determine only that the CSI report config activates one SD pattern for the CSI-RS resource. For example, the network device can instruct SD pattern #1 to be deactivated, thus the terminal can determine that the CSI report config only activates SD pattern #2 for the CSI-RS resource, and then receive the CSI-RS sent by the network device based on SD pattern #2. This ensures that the terminal and network device have a consistent understanding of the SD pattern for CSI-RS, thereby guaranteeing accurate measurement of CSI-RS by the terminal and obtaining accurate CSI.

[0170] Figure 5 This is a schematic diagram illustrating the spatial adjustment system and sub-configuration relationship according to embodiments of the present disclosure.

[0171] like Figure 5 As shown, this example uses 3 CSI-RS resources and 2 CSI report configs.

[0172] The three CSI-RS resources are CSI-RS resource#1, CSI-RS resource#2, and CSI-RSresource#3. CSI-RS resource#1 is associated with n1 SD patterns, namely SD pattern#1 to SDpattern#n1, CSI-RS resource#1 is associated with n2 SD patterns, namely SD pattern#1 to SDpattern#n2, and CSI-RS resource#1 is associated with n3 SD patterns, namely SD pattern#1 to SDpattern#n3.

[0173] The two CSI report configs are CSI report config#1 and CSI report config#2. CSI report config#1 contains m1 SD patterns, namely subconfig#1 to SD pattern#m1, and CSI report config#2 contains m2 SD patterns, namely subconfig#1 to SD pattern#m2.

[0174] The subconfig in CSI report config#1 is associated with the SD patterns associated with CSI-RS resource#1 and CSI-RS resource#2, and can be used to activate the SD patterns associated with CSI-RS resource#1 and CSI-RS resource#2. For example, subconfig#1 in CSI report config#1 is used to activate SD pattern#1 associated with CSI-RS resource#1, and subconfig#2 in CSI report config#1 is used to activate SD pattern#2 associated with CSI-RS resource#2; furthermore, subconfig#1 in CSI report config#1 can also be used to activate SD pattern#1 associated with CSI-RS resource#2.

[0175] The subconfig in CSI report config #2 is associated with the SD patterns associated with CSI-RS resource #2 and CSI-RS resource #3, and can be used to activate the SD patterns associated with CSI-RS resource #2 and CSI-RS resource #3. For example, subconfig #3 in CSI report config #2 is used to activate SD pattern #3 associated with CSI-RS resource #2, and subconfig #4 in CSI report config #2 is used to activate SD pattern #4 associated with CSI-RS resource #3; furthermore, subconfig #3 in CSI report config #2 can also be used to activate SD pattern #3 associated with CSI-RS resource #3.

[0176] It can be seen that, in Figure 5In the illustrated embodiment, a single CSI report config can activate multiple SD patterns for a CSI-RS resource. For example, subconfig #1 in CSI report config #1 is used to activate SD pattern #1 associated with CSI-RS resource #1, and subconfig #2 in CSI report config #1 is used to activate SD pattern #2 associated with CSI-RS resource #2. Multiple CSI report configs can activate multiple SD patterns for a CSI-RS resource. For example, subconfig #3 in CSI report config #2 is used to activate SD pattern #3 associated with CSI-RS resource #2, and subconfig #4 in CSI report config #2 is used to activate SD pattern #4 associated with CSI-RS resource #3.

[0177] When downlink transmission is in AFTM mode, due to the shutdown of some TxRUs, the network device can only send CSI-RS based on some of the multiple SD patterns that were active before the shutdown of some TxRUs. In this case, if the terminal still receives CSI-RS based on multiple SD patterns, it will lead to inconsistency between the terminal and the network device in understanding the SD patterns of CSI-RS, affecting the accuracy of CSI reports.

[0178] In some embodiments, the terminal does not expect the Channel State Information (CSI) report config to have a different SD pattern for activating the CSI-RS resources, and may include at least one of the following:

[0179] The terminal does not expect a single CSI report configuration to have a different SD pattern for activating the CSI-RS resource;

[0180] The terminal does not expect multiple CSI report configs to activate different SD patterns for the CSI-RS resources.

[0181] For example, a terminal may not expect the SD pattern activated by CSI report config #1 to be different from that activated by CSI-RS resource #1. Specifically, the terminal may not expect any subconfig in CSI report config #1 to activate a different SD pattern for CSI-RS resource #1. Therefore, the terminal can determine that any subconfig in CSI report config #1 activates only one SD pattern for CSI-RS resource #1. For example, the subconfigs activated in CSI report config #1 include subconfig #1 and subconfig #2, where subconfig #1 activates SD pattern #1 for CSI-RS resource #1, and subconfig #2 activates SD pattern #2 for CSI-RS resource #1. If the terminal determines that the downlink transmission type is AFTM, it can also determine that only subconfig #1 and subconfig #2 activate one SD pattern for CSI-RS resource #1, for example, determining that SD pattern #2 is activated. Then, the terminal can receive CSI-RS data in CSI-RS resource #1 according to SD pattern #2.

[0182] Correspondingly, when downlink transmission is in ATFM mode, network devices disable some TxRUs for energy saving and can only send CSI-RS according to SD pattern #2. This ensures that network devices and terminals have a consistent understanding of the SD pattern, both interpreting it as SD pattern #2.

[0183] For example, the terminal may not expect CSI report config#1 and CSI report config#2 to activate different SD patterns for CSI-RS resource#1. In this case, the terminal can determine that any subconfig in CSI report config#1 and any subconfig in CSI report config#2 activate only one SD pattern for CSI-RS resource#1.

[0184] For example, the subconfig activated in CSI report config#1 includes subconfig#1, and the subconfig activated in CSI report config#2 includes subconfig#3. Subconfig#1 activates SD pattern#1 for CSI-RS resource#1, and subconfig#3 activates SD pattern#3 for CSI-RS resource#1.

[0185] The network device can instruct the terminal to activate subconfig#3. Then the terminal can determine that only subconfig#1 is active, and thus determine that the SD pattern#1 configured in subconfig#1 is active. The terminal can then receive CSI-RS in CSI-RS resource#1 according to SD pattern#1.

[0186] Correspondingly, when downlink transmission is in ATFM mode, network devices disable some TxRUs for energy saving and can only send CSI-RS according to SD pattern #1. This ensures that network devices and terminals have a consistent understanding of the SD pattern, both interpreting it as SD pattern #1.

[0187] It should be noted that when the downlink transmission is in ATFM mode, the terminal can receive CSI-RS based on a single SD pattern, as shown in the previous embodiments. However, the embodiments of this disclosure are not limited to this. When the downlink transmission is in ATFM mode, the terminal can also receive CSI-RS based on multiple SD patterns. In this case, the network device also sends CSI-RS based on multiple SD patterns. For example, even if the network device disables some TxRUs, it can still send CSI-RS based on multiple SD patterns. Therefore, the terminal can also receive CSI-RS based on multiple SD patterns, as long as the terminal and the network device have a consistent understanding of the multiple SD patterns.

[0188] In some embodiments, the terminal expects the SD pattern activated by the CSI report config for CSI-RS resources to be a specific SD pattern.

[0189] For example, a specific SD pattern includes at least one of the following: a specific number of SD patterns, a specific identifier SD pattern, or a recent specific number of SD patterns.

[0190] For example, a specific SD pattern may include a specific identifier SD pattern, such as SD pattern #1 with identifier 1 and SD pattern #2 with identifier 2.

[0191] When the downlink transmission is in ATFM mode, the terminal can expect the CSI report config to activate the SD pattern for CSI-RS resources as SD pattern#1 and SD pattern#2 with the identifier 2.

[0192] For example, the subconfigs activated in CSI report config#1 include subconfig#1, subconfig#2, and subconfig#3. Subconfig#1 activates SD pattern#1 for CSI-RS resource#1, subconfig#2 activates SD pattern#2 for CSI-RS resource#1, and subconfig#3 activates SD pattern#3 for CSI-RS resource#1.

[0193] The network device can instruct the terminal to activate subconfig#3. Then the terminal can determine that only subconfig#1 and subconfig#2 are active, thereby determining that SD pattern#1 configured in subconfig#1 and SD pattern#2 configured in subconfig#2 are active. Then the terminal can receive CSI-RS in CSI-RSresource#1 according to SD pattern#1 and SD pattern#2.

[0194] Correspondingly, when downlink transmission is in ATFM mode, network devices disable some TxRUs for energy saving. Although they cannot send CSI-RS based on SD pattern #3, they can still send CSI-RS based on SD pattern #1 and SD pattern #2. Therefore, it can be ensured that network devices and terminals have a consistent understanding of the SD patterns, both using SD pattern #1 and SD pattern #2.

[0195] In some embodiments, determining a first SD pattern based on at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, according to the type of downlink transmission, includes:

[0196] The downlink transmission type is AFTM, and multiple SD patterns in the at least one SD pattern are in an active state. Among the multiple SD patterns in the active state, the latest activated SD pattern (e.g., the SD pattern corresponding to the latest activation signaling) is determined as the first SD pattern.

[0197] For example, when a terminal determines that the downlink transmission type is AFTM, and multiple SD patterns among at least one SD pattern associated with the CSI-RS resource are active, the terminal can determine the most recently activated SD pattern from among these active SD patterns and use it as the first SD pattern. Here, an activated SD pattern can refer to one or more SD patterns indicated by the network device through signaling within at least one SD pattern.

[0198] For example, for CSI-RS resource #1, the SD patterns activated by CSI report config #1 for CSI-RS resource #1 include SD pattern #1 and SD pattern #2. If the terminal determines that SD pattern #1 is activated at time T1 and SD pattern #2 is activated at time T2, and T2 is later than T1, then SD pattern #2 can be determined as the most recently activated SD pattern. Thus, SD pattern #2 is determined as the first SD pattern, and CSI-RS can be received in CSI-RS resource #1 according to SD pattern #2.

[0199] In some embodiments, determining a first SD pattern based on at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, according to the type of downlink transmission, includes:

[0200] The downlink transmission type is AFTM. Multiple subconfigs in the CSI report config are active. Among the multiple active subconfigs, the SD pattern associated with the most recently activated subconfig is determined to be the first SD pattern.

[0201] For example, when a terminal determines that the downlink transmission type is AFTM, it determines that multiple subconfigs in the CSI report config are active. The terminal can then identify the most recently activated subconfig from among these active subconfigs and use the SD pattern associated with the most recently activated subconfig as the first SD pattern. Here, an active subconfig can refer to one or more subconfigs that the network device indicates are active among the multiple subconfigs in the CSI report config via signaling.

[0202] For example, for CSI report config #1, the active subconfigs in CSI report config #1 include subconfig #1 and subconfig #2. Subconfig #1 is associated with SD pattern #1 in CSI-RS resource #1, and subconfig #2 is associated with SD pattern #2 in CSI-RS resource #1. If the terminal determines that subconfig #1 is activated at time T1 and subconfig #2 is activated at time T2, and T2 is later than T1, then subconfig #2 can be determined as the most recently activated SD pattern. Therefore, SD pattern #2 associated with subconfig #2 can be identified as the first SD pattern, and CSI-RS can be received in CSI-RS resource #1 based on SD pattern #2.

[0203] In some embodiments, determining a first SD pattern based on at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, according to the type of downlink transmission, includes:

[0204] The downlink transmission type is AFTM, and the first SD pattern is determined in the at least one SD pattern according to the first indication signaling sent by the network device.

[0205] For example, when a terminal determines that the downlink transmission type is AFTM, it can receive a first indication signaling sent by the network device. This first indication signaling can be received either before or after the terminal determines that the downlink transmission type is AFTM; this disclosure does not limit this.

[0206] The first instruction signaling can indicate an SD pattern in at least one SD pattern associated with the CSI-RS resource (e.g., it can indicate the index of the SD pattern, or it can indicate other information of the SD pattern), and the terminal can use the SD pattern indicated by the first instruction signaling as the first SD pattern.

[0207] For example, for CSI-RS resource #1, CSI-RS resource #1 is associated with SD pattern #1 to SD pattern #n1. If the terminal determines that the first indication signaling indicates SD pattern #2 in SD pattern #1 and SD pattern #n1, then SD pattern #2 can be determined as the first SD pattern, and CSI-RS can be received in CSI-RS resource #1 according to SD pattern #2.

[0208] In some embodiments, the first indication signaling may also indicate the first SD pattern among the multiple SD patterns that are active in the at least one SD pattern.

[0209] For example, for CSI-RS resource #1, SDpattern #1 and SD pattern #2 in the SD pattern associated with CSI-RS resource #1 are in an active state. If the terminal determines that the first indication signaling indicates SD pattern #2 in SD pattern #1 and SDpattern #2, then it can be determined that SD pattern #2 is the first SD pattern, and then CSI-RS can be received in CSI-RS resource #1 according to SD pattern #2.

[0210] In some embodiments, the first indication signaling includes at least one of the following:

[0211] Community-specific signaling;

[0212] Radio Resource Control (RRC) signaling;

[0213] Downlink Control Information (DCI);

[0214] Media Access Control Element (MAC CE).

[0215] For example, cell-specific signaling includes at least one of the following: System Information Block (SIB) and paging message. The SIB can be an existing SIB or a newly defined SIB.

[0216] In some embodiments, the first indication signaling is used to indicate at least one of the following:

[0217] CSI-RS resource identifier;

[0218] CSI-RS resource set identifier;

[0219] SD pattern identifier;

[0220] The identifier of the Channel State Information Reporting (CSI) configuration file.

[0221] The identifier of the subconfig in the CSI report config.

[0222] In this embodiment, the identifier can also be referred to as an index.

[0223] For example, the first instruction signaling can indicate the identifier of the CSI-RS resource as CSI-RS resource#1 and the identifier of the SD pattern as SD pattern#2. Based on this, the terminal can determine that SD pattern#2 in CSI-RS resource#1 is the first SD pattern. Of course, the identifier of the CSI-RS resource indicated by the first instruction signaling is not limited to one, but can be multiple, and the identifier of the SD pattern indicated by the first instruction signaling is not limited to one, but can also be multiple.

[0224] For example, the first instruction signaling can indicate identifier 1 of the CSI report config, allowing the terminal to determine CSIreport config#1; and identifier 2 of the subconfig, allowing the terminal to determine subconfig#2. The CSI report config and subconfig corresponding to the identifiers indicated by the first instruction signaling can be used by the terminal to determine the active CSI report config and subconfig, thereby allowing the terminal to determine the SD pattern associated with the subconfig. For CSI-RS resource#1, the terminal can thus determine that subconfig#2 in CSI report config#1 is associated with SD pattern#2 in CSI-RS resource#1 as the first SD pattern. Of course, the identifiers of the CSI report configs indicated by the first instruction signaling are not limited to one; they can be multiple. Similarly, the identifiers of the subconfigs indicated by the first instruction signaling are not limited to one; they can be multiple. Therefore, the first SD pattern determined by the terminal can also be multiple SD patterns.

[0225] Figure 6A This is a schematic diagram illustrating the structure of a first instruction signaling according to an embodiment of the present disclosure.

[0226] like Figure 6A As shown, taking the first indication signaling including a MAC CE, which is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern as an example, the MAC CE may include bytes Oct 1 to Oct N+3.

[0227] Oct 1 contains function indication information A / D, which indicates that the function of the bit at this position in the subsequent bytes is to indicate activation, deactivation, Serving Cell ID, and Bandwidth Part ID.

[0228] In some embodiments, Oct 2 includes an activation indicator R and an identifier of a CSI-RS resource set, such as CSI-RS resource set #1. For example, R being 1 indicates activation of CSI-RS resource set #1, and R being 0 indicates deactivation of CSI-RS resource set #1. Oct 3 to Oct n+3 contain identifiers of active SD patterns in the SD patterns associated with CSI-RS resource set #1, such as one or more SD patterns from SD pattern #1 to SD pattern #n. For example, if the identifier of the SD pattern in Oct 3 is SD pattern #2, it indicates that SD pattern #2 is active.

[0229] In some embodiments, Oct 2 includes an activation indicator R and an identifier for the CSI report config, such as CSIreport config#1. For example, R being 1 indicates activation of CSI report config#1, and R being 0 indicates deactivation of CSI report config#1. Oct 3 to Oct n+3 contain identifiers of active subconfigs among the subconfigs of the CSI report config, such as one or more subconfigs from subconfig#1 to subconfig#n. For example, if the identifier of the subconfig in Oct 3 is subconfig#2, it can indicate that subconfig#2 is active, and the terminal can determine that the SD pattern associated with subconfig#2 (e.g., SD pattern#2) is active.

[0230] Figure 6B This is a schematic diagram illustrating another first instruction signaling structure according to an embodiment of the present disclosure.

[0231] like Figure 6B As shown, taking the first indication signaling including a MAC CE, which is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern as an example, the MAC CE may include bytes Oct 1 to Oct N+3.

[0232] Oct 1 contains function indication information A / D, which indicates that the function of the bit at this position in the subsequent bytes is to indicate activation, deactivation, Serving Cell ID, and Bandwidth Part ID.

[0233] Oct 2 contains the activation indicator R and the identifier of the CSI-RS resource, such as CSI-RS resource #1. For example, if R is 1, it can indicate the activation of CSI-RS resource #1, and if R is 0, it can indicate the deactivation of CSI-RS resource #1.

[0234] Oct 3 to Oct n+3 contain the activation instruction R and the identifier of the SD pattern associated with CSI-RS resource #1, such as SD pattern #1 to SD pattern #n1. For example, R being 1 in Oct 3 can indicate activation of SD pattern #1 in CSI-RS resource #1, and R being 0 in Oct 3 can indicate deactivation of SD pattern #1 in CSI-RS resource #1.

[0235] In some embodiments, the method further includes determining the type of downlink transmission according to an explicit or implicit method. The terminal may determine the type of downlink transmission as MFTA or AFTM according to an explicit method, or implicitly according to an implicit method.

[0236] The following examples illustrate the explicit and implicit methods respectively.

[0237] In some embodiments, determining the type of downlink transmission in an explicit manner includes: determining the type of downlink transmission based on a second indication signaling sent by the network device.

[0238] For example, if a network device determines that a portion of the TxRU is disabled, it can send a second indication signaling message to the terminal. This second indication signaling message indicates whether the downlink transmission type is AFTM or MFTA. Based on the second indication signaling message, the terminal can determine whether the downlink transmission type after receiving the second signaling message is AFTM or MFTA.

[0239] In some embodiments, determining the type of downlink transmission implicitly includes determining the type of downlink transmission based on the number of ports on which the downlink information is sent by the network device.

[0240] In some embodiments, determining the type of downlink transmission based on the number of ports of downlink information sent by the network device includes: if the first number of ports of the downlink information most recently sent by the network device (for example, the reference point includes at least one of the following: the terminal receives downlink transmission, the terminal receives configuration information of downlink transmission, the terminal receives system information, or the terminal receives paging) is less than the second number of ports of the downlink information sent by the network device before the most recent downlink information transmission, the type of downlink transmission is determined to be AFTM.

[0241] For example, a terminal can receive downlink information sent by a network device and determine the number of ports for the downlink information. The downlink information may include at least one of the following: PDCCH, PDSCH, CSI-RS, or DMRS. Then, it can determine the first port number (port#1) of the most recently sent downlink information by the network device, and the second port number (port#2) of the downlink information sent before the most recent transmission. By comparing port#1 and port#2, if port#1 is less than port#2, the terminal can determine that the network device has reduced the number of ports for the downlink information. Generally, this indicates that the network device has entered network access mode, thus determining the downlink transmission type as AFTM.

[0242] Secondly, embodiments of this disclosure provide a signal transmission method. Figure 7 This is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure. The signal transmission method shown in this embodiment can be executed by a network device.

[0243] like Figure 7 As shown, the signal receiving method may include the following steps:

[0244] In step S701, a first SD pattern is determined within at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, based on the type of downlink transmission.

[0245] In step S702, CSI-RS is sent according to the first SD pattern.

[0246] It should be noted that, Figure 7 The embodiments shown can be implemented independently or in combination with at least one other embodiment of this disclosure. The specific choice can be made as needed, and this disclosure does not limit the scope of the embodiments.

[0247] In some embodiments, a CSI-RS resource can be associated with at least one SD pattern. For example, an SD pattern can be configured via a subconfig, which is associated with both an SD pattern and a CSI-RS resource. A CSI-RS resource can then be associated with the SD pattern associated with its subconfig. Since a CSI-RS resource can be associated with at least one subconfig, it can therefore be associated with at least one SD pattern.

[0248] According to embodiments of this disclosure, the SD pattern upon which the network device transmits CSI-RS may not be fixed, but may be variable. Specifically, the network device may determine a first SD pattern from at least one SD pattern associated with the CSI-RS resource based on the type of downlink transmission, and transmit CSI-RS according to the first SD pattern to meet the relevant needs of the downlink transmission type, such as energy saving requirements.

[0249] Correspondingly, the terminal can also determine the first SD pattern from at least one SD pattern associated with the CSI-RS resource based on the type of downlink transmission, and receive the CSI-RS according to the first SD pattern. This helps ensure that the SD pattern on which the terminal receives the CSI-RS is based is the same as the SD pattern on which the network device sends the CSI-RS, thereby ensuring that the terminal and network device have a consistent understanding of the SD pattern of the CSI-RS, thus guaranteeing accurate measurement of the CSI-RS by the terminal and obtaining accurate CSI.

[0250] In some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjustment-First (MFTA); Adjustment-Adjustment-First (AFTM).

[0251] For example, when the downlink transmission type is MFTA, the terminal can receive CSI-RS according to the active SD pattern. The active SD pattern can refer to one or more active SD patterns indicated by the network device through signaling in at least one SD pattern.

[0252] For example, when the downlink transmission type is AFTM, the network device can disable some TxRUs. Due to the partial TxRUs being disabled, the network device can only send CSI-RS based on some of the multiple SD patterns that were active before the partial TxRUs were disabled. The terminal is unaware that the network device can only send CSI-RS based on some of the multiple SD patterns.

[0253] In some embodiments, the downlink transmission type is AFTM, and the Channel State Information (CSI) repot config activates an SD pattern for the CSI-RS resource.

[0254] Correspondingly, when the downlink transmission type is AFTM, the terminal does not need to expect the CSI reportconfig to have a different SD pattern for activating CSI-RS resources.

[0255] For example, in AFTM mode, the network device sends CSI-RS to the terminal based on SD pattern#1 and SD pattern#2 before disabling some TxRUs, and sends CSI-RS to the terminal based only on SD pattern#2 after disabling some TxRUs.

[0256] When a terminal determines that the downlink transmission is in AFTM mode, it may not expect the CSI report config to activate a different SD pattern for the CSI-RS resource. Therefore, it can determine that the CSI report config activates only one SD pattern for the CSI-RS resource. For example, the network device can instruct SD pattern #1 to be activated. Then, the CSI report config will only activate SD pattern #2 for the CSI-RS resource. Thus, the terminal can determine that the CSI report config only activates SD pattern #2 for the CSI-RS resource and receive the CSI-RS sent by the network device based on SD pattern #2. This ensures that the terminal and network device have a consistent understanding of the CSI-RS SD pattern, thereby guaranteeing accurate CSI-RS measurement by the terminal and obtaining accurate CSI.

[0257] In some embodiments, a first SD pattern is determined based on the type of downlink transmission, in at least one spatial adjustment scheme (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, including:

[0258] The downlink transmission type is AFTM, and multiple SD patterns are active in at least one SD pattern. Among the multiple active SD patterns, the most recently activated SD pattern is determined as the first SD pattern.

[0259] For example, when the downlink transmission type is AFTM, and multiple SD patterns are active in at least one SD pattern associated with the CSI-RS resource, the network device can determine the most recently activated SD pattern among these active SD patterns and use it as the first SD pattern. Here, the activated SD pattern can refer to one or more SD patterns that the network device indicates are active in at least one SD pattern via signaling.

[0260] For example, for CSI-RS resource #1, the SD patterns activated by CSI report config #1 for CSI-RS resource #1 include SD pattern #1 and SD pattern #2. The network device determines that SD pattern #1 is activated at time T1, and SD pattern #2 is activated at time T2, with T2 being later than T1. Therefore, SD pattern #2 can be determined as the most recently activated SD pattern, and thus designated as the first SD pattern. Consequently, CSI-RS can be sent in CSI-RS resource #1 based on SD pattern #2. Correspondingly, the terminal receives CSI-RS in CSI-RS resource #1 based on SD pattern #2.

[0261] In some embodiments, the signal transmission method further includes: the downlink transmission type is AFTM, and a first indication signaling is sent to the terminal, wherein the first indication signaling is used to instruct the terminal to determine a first SD pattern in at least one SD pattern, and the first SD pattern is used by the network device to send CSI-RS.

[0262] For example, when a network device determines that the downlink transmission type is AFTM, it can send a first indication signaling to the terminal. This first indication signaling can be sent either before or after the network device determines that the downlink transmission type is AFTM; this disclosure does not limit this.

[0263] The first indication signaling can indicate an SD pattern (e.g., an index of the SD pattern, or other information of the SD pattern) in at least one SD pattern associated with the CSI-RS resource. The first SD pattern is used by the network device to send CSI-RS, thereby enabling the terminal to determine the first SD pattern and receive CSI-RS based on the first SD pattern.

[0264] For example, for CSI-RS resource #1, CSI-RS resource #1 is associated with SD pattern #1 to SD pattern #n1. The first indication signaling indicates SD pattern #2 in SD pattern #1 and SD pattern #n1. Then the terminal can determine that SD pattern #2 is the first SD pattern, and then receive CSI-RS in CSI-RS resource #1 according to SD pattern #2.

[0265] In some embodiments, the first indication signaling may also indicate the first SD pattern among a plurality of active SD patterns of at least one SD pattern.

[0266] For example, for CSI-RS resource #1, SDpattern #1 and SD pattern #2 in the SD pattern associated with CSI-RS resource #1 are in an active state. The first indication signaling indicates SD pattern #2 in SD pattern #1 and SD pattern #2. Then the terminal can determine that SD pattern #2 is the first SD pattern, and then receive CSI-RS in CSI-RS resource #1 according to SD pattern #2.

[0267] In some embodiments, the first indication signaling includes at least one of the following: cell-specific signaling; radio resource control signaling; downlink control information (DCI); and control unit (MAC) CE.

[0268] For example, cell-specific signaling includes at least one of the following: System Information Block (SIB) and paging message. The SIB can be an existing SIB or a newly defined SIB.

[0269] In some embodiments, the first indication signaling is used to indicate at least one of the following: an identifier of a CSI-RS resource; an identifier of an SD pattern; an identifier of a Channel State Information Reporting Configuration (CSI report config); or an identifier of a subconfig within the CSI report config. The identifier in this embodiment may also be referred to as an index.

[0270] For example, the first instruction signaling can indicate the identifier of the CSI-RS resource as CSI-RS resource#1 and the identifier of the SD pattern as SD pattern#2. Based on this, the terminal can determine that SD pattern#2 in CSI-RS resource#1 is the first SD pattern. Of course, the identifier of the CSI-RS resource indicated by the first instruction signaling is not limited to one, but can be multiple, and the identifier of the SD pattern indicated by the first instruction signaling is not limited to one, but can also be multiple.

[0271] For example, the first instruction signaling can indicate identifier 1 of the CSI report config, allowing the terminal to determine CSIreport config#1; and identifier 2 of the subconfig, allowing the terminal to determine subconfig#2. The CSI report config and subconfig corresponding to the identifiers indicated by the first instruction signaling can be used by the terminal to determine the active CSI report config and subconfig, thereby allowing the terminal to determine the SD pattern associated with the subconfig. For CSI-RS resource#1, the terminal can thus determine that subconfig#2 in CSI report config#1 is associated with SD pattern#2 in CSI-RS resource#1 as the first SD pattern. Of course, the identifiers of the CSI report configs indicated by the first instruction signaling are not limited to one; they can be multiple. Similarly, the identifiers of the subconfigs indicated by the first instruction signaling are not limited to one; they can be multiple. Therefore, the first SD pattern determined by the terminal can also be multiple SD patterns.

[0272] like Figure 6A As shown, taking the first indication signaling including a MAC CE, which is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern as an example, the MAC CE may include bytes Oct 1 to Oct N+3.

[0273] Oct 1 contains function indication information A / D, which indicates that the function of the bit at this position in the subsequent bytes is to indicate activation, deactivation, Serving Cell ID, and Bandwidth Part ID.

[0274] In some embodiments, Oct 2 includes an activation indicator R and an identifier of a CSI-RS resource set, such as CSI-RS resource set #1. For example, R being 1 indicates activation of CSI-RS resource set #1, and R being 0 indicates deactivation of CSI-RS resource set #1. Oct 3 to Oct n+3 contain identifiers of active SD patterns in the SD patterns associated with CSI-RS resource set #1, such as one or more SD patterns from SD pattern #1 to SD pattern #n. For example, if the identifier of the SD pattern in Oct 3 is SD pattern #2, it indicates that SD pattern #2 is active.

[0275] In some embodiments, Oct 2 includes an activation indicator R and an identifier for the CSI report config, such as CSIreport config#1. For example, R being 1 indicates activation of CSI report config#1, and R being 0 indicates deactivation of CSI report config#1. Oct 3 to Oct n+3 contain identifiers of active subconfigs among the subconfigs of the CSI report config, such as one or more subconfigs from subconfig#1 to subconfig#n. For example, if the identifier of the subconfig in Oct 3 is subconfig#2, it can indicate that subconfig#2 is active, and the terminal can determine that the SD pattern associated with subconfig#2 (e.g., SD pattern#2) is active.

[0276] like Figure 6B As shown, taking the first indication signaling including a MAC CE, which is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern as an example, the MAC CE may include bytes Oct 1 to Oct N+3.

[0277] Oct 1 contains function indication information A / D, which indicates that the function of the bit at this position in the subsequent bytes is to indicate activation, deactivation, Serving Cell ID, and Bandwidth Part ID.

[0278] Oct 2 contains the activation indicator R and the identifier of the CSI-RS resource, such as CSI-RS resource #1. For example, if R is 1, it can indicate the activation of CSI-RS resource #1, and if R is 0, it can indicate the deactivation of CSI-RS resource #1.

[0279] Oct 3 to Oct n+3 contain the activation instruction R and the identifier of the SD pattern associated with CSI-RS resource #1, such as SD pattern #1 to SD pattern #n1. For example, R being 1 in Oct 3 can indicate activation of SD pattern #1 in CSI-RS resource #1, and R being 0 in Oct 3 can indicate deactivation of SD pattern #1 in CSI-RS resource #1.

[0280] 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.

[0281] 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".

[0282] In some embodiments, the terms “downlink control information (DCI),” “downlink (DL) assignment,” “DL DCI,” “uplink (UL) grant,” and “UL DCI” can be used interchangeably.

[0283] 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".

[0284] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0285] 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.

[0286] 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.

[0287] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0288] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transmit,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0289] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably, such as "certain A," "preset A," "default A," "set A," and "indicated A."

[0290] Corresponding to the aforementioned embodiments of the signal receiving method and signal transmitting method, this disclosure also provides embodiments of the signal receiving device and the signal transmitting device.

[0291] Figure 8 This is a schematic block diagram illustrating a signal receiving device according to an embodiment of the present disclosure. Figure 8 As shown, the signal receiving device includes a processing module 801 and a transceiver module 802.

[0292] The processing module is used to determine a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, based on the type of downlink transmission; the transceiver module is used to receive CSI-RS according to the first SD pattern.

[0293] In some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjustment-First (MFTA); Adjustment-Adjustment-First (AFTM).

[0294] In some embodiments, the downlink transmission type is AFTM, and the terminal does not expect the Channel State Information Configuration (CSIrepot) config to have a different SD pattern for activating CSI-RS resources.

[0295] In some embodiments, the processing module is used for downlink transmission of type AFTM, and multiple SD patterns in at least one SD pattern are in an active state. Among the multiple SD patterns in the active state, the latest activated SD pattern is determined as the first SD pattern.

[0296] In some embodiments, the processing module, for downlink transmission of type AFTM, determines a first SD pattern in at least one SD pattern based on a first indication signaling sent by the network device.

[0297] In some embodiments, the first indication signaling includes at least one of the following: cell-specific signaling; radio resource control signaling; downlink control information (DCI); and control unit (MAC) CE.

[0298] In some embodiments, the first indication signaling is used to indicate at least one of the following: the identifier of the CSI-RS resource; the identifier of the SDpattern; the identifier of the Channel State Information Report Config (CSI report config); and the identifier of a subconfig in the CSI report config.

[0299] In some embodiments, the processing module is further configured to determine the type of downlink transmission based on an explicit or implicit method.

[0300] In some embodiments, the processing module is configured to determine the type of downlink transmission based on a second indication signaling sent by the network device.

[0301] In some embodiments, the processing module is configured to determine the type of downlink transmission based on the number of ports on which the downlink information is sent by the network device.

[0302] In some embodiments, the processing module determines the downlink transmission type as AFTM if the first port number of the downlink information most recently transmitted by the network device is less than the second port number of the downlink information transmitted by the network device before the most recent transmission of downlink information.

[0303] It should be noted that the modules included in the signal receiving device are not limited to those described above; for example, they may also include a storage module. This disclosure does not impose any limitations on this.

[0304] Figure 9 This is a schematic block diagram illustrating a signal transmitting device according to an embodiment of the present disclosure. Figure 9 As shown, the signal transmitting device includes a processing module 901 and a transceiver module 902.

[0305] In some embodiments, the processing module is configured to determine a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, based on the type of downlink transmission; and the transceiver module is configured to transmit CSI-RS according to the first SD pattern.

[0306] In some embodiments, the downlink transmission type includes at least one of the following: Measurement-Adjustment-First (MFTA); Adjustment-Adjustment-First (AFTM).

[0307] In some embodiments, the downlink transmission type is AFTM, and the Channel State Information (CSI) repot config activates an SD pattern for the CSI-RS resource.

[0308] In some embodiments, the processing module is used for downlink transmission of type AFTM, and multiple SD patterns in at least one SD pattern are in an active state. Among the multiple SD patterns in the active state, the latest activated SD pattern is determined as the first SD pattern.

[0309] In some embodiments, the transceiver module is further configured to send a first indication signaling to the terminal when the downlink transmission type is AFTM, wherein the first indication signaling is used to instruct the terminal to determine a first SD pattern in at least one SD pattern, and the first SD pattern is used by the network device to send CSI-RS.

[0310] In some embodiments, the first indication signaling includes at least one of the following: cell-specific signaling; radio resource control signaling; downlink control information (DCI); and control unit (MAC) CE.

[0311] In some embodiments, the first indication signaling is used to indicate at least one of the following: the identifier of the CSI-RS resource; the identifier of the SDpattern; the identifier of the Channel State Information Report Config (CSI report config); and the identifier of a subconfig in the CSI report config.

[0312] It should be noted that the modules included in the signal transmitting device are not limited to those described above; for example, they may also include a storage module. This disclosure does not impose any limitations on this.

[0313] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0314] Embodiments of this disclosure also provide a terminal, comprising: one or more processors; and a memory coupled to the one or more processors, the memory storing executable instructions, which, when executed by the one or more processors, cause the terminal to perform the signal receiving method according to any one of the first aspect and optional embodiments of the first aspect.

[0315] Embodiments of this disclosure also provide a network device, comprising: one or more processors; and a memory coupled to the one or more processors, the memory storing executable instructions, which, when executed by the one or more processors, cause the network device to perform the signal transmission method described in any one of the optional embodiments of the second aspect.

[0316] Embodiments of this disclosure also propose a signal transmission and reception method, comprising: a network device determining a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with a Channel State Information Reference Signal (CSI-RS) resource based on the type of downlink transmission; the network device transmitting CSI-RS to a terminal based on the first SD pattern; the terminal determining the first SD pattern within at least one SD pattern associated with a CSI-RS resource based on the type of downlink transmission; and the terminal receiving the CSI-RS transmitted by the network device based on the first SD pattern.

[0317] Embodiments of this disclosure also propose a communication system including a terminal and a network device, wherein the terminal is configured to implement the signal transmission method described in any one of the first aspect, the alternative embodiments of the first aspect, the second aspect, and the alternative embodiments of the second aspect.

[0318] Embodiments of this disclosure also provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform a signal transmission method as described in any one of the first aspect, alternative embodiments of the first aspect, the second aspect, and alternative embodiments of the second aspect.

[0319] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided 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.

[0320] 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.

[0321] 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).

[0322] Figure 10 This is a schematic diagram of the structure of the communication device 10100 proposed in this embodiment. The communication device 10100 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 10100 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.

[0323] like Figure 10As shown, the communication device 10100 includes one or more processors 10101. The processor 10101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can 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. The processor 10101 is used to invoke instructions to cause the communication device 10100 to execute any of the above methods.

[0324] In some embodiments, the communication device 10100 further includes one or more memories 10102 for storing instructions. Optionally, all or part of the memories 10102 may also be located outside the communication device 10100.

[0325] In some embodiments, the communication device 10100 further includes one or more transceivers 10103. When the communication device 10100 includes one or more transceivers 10103, the communication steps such as sending and receiving in the above method are performed by the transceivers 10103, and other steps are performed by the processor 10101.

[0326] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0327] Optionally, the communication device 10100 further includes one or more interface circuits 10104, which are connected to the memory 10102. The interface circuits 10104 can be used to receive signals from the memory 10102 or other devices, and can be used to send signals to the memory 10102 or other devices. For example, the interface circuits 10104 can read instructions stored in the memory 10102 and send the instructions to the processor 10101.

[0328] The communication device 10100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 10100 described in this disclosure is not limited thereto, and the structure of the communication device 10100 may vary. Figure 10The limitations. The communication device can be a standalone device or part of a larger device. For example, the communication device can be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally including storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) 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.; (6) others, etc.

[0329] Figure 11 This is a schematic diagram of the structure of chip 11200 according to an embodiment of this disclosure. For cases where the communication device 10100 can be a chip or a chip system, please refer to... Figure 11 The diagram shown is a schematic representation of the structure of chip 11200, but it is not limited to this.

[0330] Chip 11200 includes one or more processors 11201, which are used to invoke instructions to cause chip 11200 to perform any of the above methods.

[0331] In some embodiments, the chip 11200 further includes one or more interface circuits 11202, which are connected to the memory 11203. The interface circuits 11202 can be used to receive signals from the memory 11203 or other devices, and can also be used to send signals to the memory.

[0332] 11203 or other devices transmit signals. For example, interface circuit 11202 can read instructions stored in memory 11203 and send those instructions to processor 11201. Optionally, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0333] In some embodiments, chip 11200 further includes one or more memories 11203 for storing instructions. Optionally, all or part of the memories 11203 may be located outside of chip 11200.

[0334] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 10100, cause the communication device 10100 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.

[0335] This disclosure also provides a program product that, when executed by the communication device 10100, causes the communication device 10100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0336] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A signal receiving method, characterized in that, The method, executed by a terminal, includes: Based on the type of downlink transmission, a first SD pattern is determined within at least one spatial adjustment mode (SD) pattern associated with the Channel State Information Reference Signal (CSI-RS) resource; Receive CSI-RS according to the first SD pattern; The step of determining the first SD pattern based on the downlink transmission type and at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource includes one of the following: The downlink transmission type is AFTM, and multiple SD patterns in the at least one SD pattern are in an active state. Among the multiple SD patterns in an active state, the latest active SD pattern is determined to be the first SD pattern. The downlink transmission type is AFTM. Multiple subconfigs in the CSI report config are active. Among the multiple active subconfigs, the SD pattern associated with the most recently activated subconfig is determined to be the first SD pattern. The downlink transmission type is AFTM, and the first SD pattern is determined in the at least one SD pattern according to the first indication signaling sent by the network device.

2. The method according to claim 1, characterized in that, The terminal does not expect the Channel State Information Configuration (CSIrepot) config to activate the CSI-RS resource using a different SD pattern.

3. The method according to claim 1, characterized in that, The first instruction signaling includes at least one of the following: Community-specific signaling; Radio resource control signaling; Downlink Control Information (DCI); Control unit MAC CE.

4. The method according to claim 1, characterized in that, The first indication signaling is used to indicate at least one of the following: CSI-RS resource identifier; SD pattern identifier; The identifier for the Channel State Information Report (CSI) configuration file; The identifier of the subconfig in the CSI report config.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: The type of downlink transmission is determined by whether it is explicit or implicit.

6. The method according to claim 5, characterized in that, The step of determining the downlink transmission type explicitly includes: The type of downlink transmission is determined based on a second instruction signaling sent by the network device.

7. The method according to claim 5, characterized in that, The method of determining the downlink transmission type implicitly includes: The type of downlink transmission is determined based on the number of ports on which the downlink information is sent by the network device.

8. The method according to claim 7, characterized in that, Determining the type of downlink transmission based on the number of ports sending downlink information from the network device includes: If the number of first ports in the most recent downlink information sent by the network device is less than the number of second ports in the downlink information sent by the network device before the most recent downlink information sent, the type of the downlink transmission is determined to be AFTM.

9. A signal transmission method, characterized in that, Performed by a network device, the method includes: When the downlink transmission type is AFTM and multiple SD patterns in at least one spatial adjustment scheme (SD pattern) associated with Channel State Information Reference Signal (CSI-RS) resources are active, the latest active SD pattern among the active SD patterns is determined as the first SD pattern; or, when the downlink transmission type is AFTM and multiple subconfigs in the CSI report config are active, the SD pattern associated with the latest active subconfig among the active subconfigs is determined as the first SD pattern; or, when the downlink transmission type is AFTM, a first indication signaling is sent to the terminal, wherein the first indication signaling is used to instruct the terminal to determine the first SD pattern in the at least one SD pattern, and the first SD pattern is used by the network device to transmit CSI-RS; CSI-RS is sent according to the first SD pattern.

10. The method according to claim 9, characterized in that, The Channel State Information (CSI) repot config activates an SD pattern for the CSI-RS resource.

11. The method according to claim 9, characterized in that, The first instruction signaling includes at least one of the following: Community-specific signaling; Radio resource control signaling; Downlink Control Information (DCI); Control unit MAC CE.

12. The method according to claim 9, characterized in that, The first indication signaling is used to indicate at least one of the following: CSI-RS resource identifier; SD pattern identifier; The identifier for the Channel State Information Report (CSI) configuration file; The identifier of the subconfig in the CSI report config.

13. A signal transmission and reception method, characterized in that, include: When the downlink transmission type is AFTM, the network device determines the first SD pattern among at least one spatial adjustment scheme (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, where multiple SD patterns are active. Alternatively, when the downlink transmission type is AFTM and multiple subconfigs in the CSI report config are active, the SD pattern associated with the latest active subconfig is determined as the first SD pattern. Or, when the downlink transmission type is AFTM, the network device sends a first indication signaling to the terminal, wherein the first indication signaling is used to instruct the terminal to determine the first SD pattern in the at least one SD pattern, and the first SD pattern is used by the network device to transmit CSI-RS. The network device sends CSI-RS to the terminal according to the first SD pattern; When the downlink transmission type is AFTM and multiple SD patterns in the at least one SD pattern are active, the terminal determines the most recently activated SD pattern as the first SD pattern among the active SD patterns; or, when the downlink transmission type is AFTM and multiple subconfigs in the CSI report config are active, the terminal determines the SD pattern associated with the most recently activated subconfig as the first SD pattern among the active subconfigs; or, when the downlink transmission type is AFTM, the terminal determines the first SD pattern in the at least one SD pattern according to the first indication signaling. The terminal receives the CSI-RS sent by the network device according to the first SD pattern.

14. A signal receiving device, characterized in that, The device includes: The processing module is configured to determine a first SD pattern within at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource, based on the type of downlink transmission. The transceiver module is used to receive CSI-RS according to the first SD pattern; The step of determining the first SD pattern based on the downlink transmission type and at least one spatial adjustment mode (SD pattern) associated with the Channel State Information Reference Signal (CSI-RS) resource includes one of the following: The downlink transmission type is AFTM, and multiple SD patterns in the at least one SD pattern are in an active state. Among the multiple SD patterns in an active state, the latest active SD pattern is determined to be the first SD pattern. The downlink transmission type is AFTM. Multiple subconfigs in the CSI report config are active. Among the multiple active subconfigs, the SD pattern associated with the most recently activated subconfig is determined to be the first SD pattern. The downlink transmission type is AFTM, and the first SD pattern is determined in the at least one SD pattern according to the first indication signaling sent by the network device.

15. A signal transmitting device, characterized in that, The device includes: The processing module is configured to: determine the most recently activated SD pattern as the first SD pattern when multiple SD patterns in at least one spatial adjustment scheme SD pattern associated with Channel State Information Reference Signal (CSI-RS) resource are active in the downlink transmission type AFTM; or determine the SD pattern associated with the most recently activated subconfig as the first SD pattern when multiple subconfigs in the CSI report config are active in the downlink transmission type AFTM; or send a first indication signaling to the terminal when the downlink transmission type is AFTM, wherein the first indication signaling is used to instruct the terminal to determine the first SD pattern in the at least one SD pattern, and the first SD pattern is used by the network device to transmit CSI-RS. The transceiver module is used to send CSI-RS according to the first SD pattern.

16. A terminal, characterized in that, include: One or more processors; A memory coupled to the one or more processors, the memory storing executable instructions, which, when executed by the one or more processors, cause the terminal to perform the signal receiving method according to any one of claims 1 to 8.

17. A network device, characterized in that, include: One or more processors; A memory coupled to the one or more processors, the memory storing executable instructions, which, when executed by the one or more processors, cause the network device to perform the signal transmission method of any one of claims 9 to 12.

18. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the signal receiving method according to any one of claims 1 to 8, and the network device is configured to implement the signal transmitting method according to any one of claims 9 to 12.

19. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the signal receiving method as described in any one of claims 1 to 8, and / or the signal transmitting method as described in any one of claims 9 to 12.

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