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

Abstract

The present disclosure relates to the technical field of communications, and in particular to a signal receiving method and apparatus, a signal transmitting method and apparatus, and a communication device and a storage medium. The signal receiving method comprises: on the basis of the type of downlink transmission, determining a first spatial adaptation pattern (SD pattern) from among at least one SD pattern associated with a channel state information reference signal (CSI-RS) resource; and receiving a CSI-RS on the basis of the first SD pattern. The present disclosure helps to ensure that an SD pattern based on which a terminal receives a CSI-RS is the same as an SD pattern based on which a network device transmits the CSI-RS, and therefore helps to ensure that the terminal is consistent with the network device in terms of understanding the SD pattern of the CSI-RS; thus, accurate measurement for the CSI-RS by the terminal is ensured, and accurate CSI is obtained.

Description

Signal receiving and sending method and device, communication equipment and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a signal receiving method, a signal sending method, a signal receiving device, a signal sending device, a terminal, a network device, a communication device, and a storage medium. Background Art

[0002] Network devices can transmit a Channel State Information Reference Signal (CSI-RS). Terminals can measure the CSI-RS to obtain channel state information and send this information as a Channel State Information Report (CSI report) to the network device, which can then determine the channel state. However, with the advancement of communication technology, some technical issues in this process need to be addressed.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a signal receiving and transmitting method and apparatus, a communication device, and a storage medium to solve technical problems in related technologies.

[0005] According to a first aspect of an embodiment of the present disclosure, a signal receiving method is proposed, which is executed by a terminal. The method includes: determining a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; and receiving the CSI-RS according to the first SD pattern.

[0006] According to a second aspect of an embodiment of the present disclosure, a signal sending method is proposed, which is executed by a network device. The method includes: determining a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; and sending the CSI-RS according to the first SD pattern.

[0007] According to a third aspect of an embodiment of the present disclosure, a signal receiving device is proposed, comprising: a processing module for determining, according to a type of downlink transmission, a first SD pattern within at least one spatial adjustment standard SD pattern associated with a channel state information reference signal CSI-RS resource; and a transceiver module for receiving the CSI-RS according to the first SD pattern.

[0008] According to the fourth aspect of an embodiment of the present disclosure, a signal sending device is proposed, comprising: a processing module for determining a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; and a transceiver module for sending CSI-RS according to the first SD pattern.

[0009] According to the fifth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; a memory coupled to the one or more processors, wherein the memory stores executable instructions, and when the executable instructions are executed by the one or more processors, the terminal executes the signal receiving method described in the first aspect.

[0010] According to the sixth aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; a memory coupled to the one or more processors, wherein the memory stores executable instructions, and when the executable instructions are executed by the one or more processors, the network device executes the signal sending method described in the second aspect.

[0011] According to the seventh aspect of an embodiment of the present disclosure, a signal receiving and sending method is proposed, including: a network device determines a first SD pattern within at least one spatial adjustment standard SD pattern associated with a channel state information reference signal CSI-RS resource according to a type of downlink transmission; the network device sends a CSI-RS to a terminal according to the first SD pattern; the terminal determines a first SD pattern within at least one SD pattern associated with the CSI-RS resource according to the type of downlink transmission; and the terminal receives the CSI-RS sent by the network device according to the first SD pattern.

[0012] According to an eighth aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a terminal and a network device, wherein the terminal is configured to implement the signal receiving method described in the first aspect, and the network device is configured to implement the signal sending method described in the second aspect.

[0013] According to the ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the signal receiving method described in the first aspect and / or the signal sending method described in the second aspect.

[0014] According to the embodiments of the present disclosure, it is beneficial to ensure that the SD pattern based on which the terminal receives the CSI-RS is the same as the SD pattern based on which the network device sends the CSI-RS, which is beneficial to ensure that the terminal and the network device have a consistent understanding of the SD pattern of the CSI-RS, thereby ensuring that the terminal accurately measures the CSI-RS to obtain accurate CSI. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0017] FIG2 is an interactive schematic diagram illustrating a signal receiving and sending method according to an embodiment of the present disclosure.

[0018] FIG3A is a schematic diagram showing a spatial format of a downlink transmission type according to an embodiment of the present disclosure.

[0019] FIG3B is a schematic diagram showing another spatial format of downlink transmission type according to an embodiment of the present disclosure.

[0020] FIG4 is a schematic flowchart of a signal receiving method according to an embodiment of the present disclosure.

[0021] FIG5 is a schematic diagram showing the relationship between a space adjustment format and a sub-configuration according to an embodiment of the present disclosure.

[0022] FIG6A is a schematic structural diagram of a first indication signaling according to an embodiment of the present disclosure.

[0023] FIG6B is a schematic structural diagram showing another first indication signaling according to an embodiment of the present disclosure.

[0024] FIG7 is a schematic flowchart showing a signal sending method according to an embodiment of the present disclosure.

[0025] FIG8 is a schematic block diagram of a signal receiving device according to an embodiment of the present disclosure.

[0026] FIG9 is a schematic block diagram of a signal sending device according to an embodiment of the present disclosure.

[0027] FIG10 is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0028] FIG11 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The embodiments of the present disclosure provide a signal receiving and sending method and apparatus, a communication device, and a storage medium.

[0030] In a first aspect, an embodiment of the present disclosure proposes a signal receiving method, which is executed by a terminal, and the method includes: determining a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; and receiving CSI-RS according to the first SD pattern.

[0031] In the above embodiment, the SD pattern based on which the terminal receives the CSI-RS may not be fixed but may be variable. Specifically, the terminal 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 receive the CSI-RS based on the first SD pattern. In other words, the SD pattern based on which the terminal receives the CSI-RS may also vary depending on the type of downlink transmission.

[0032] This helps ensure that the SD pattern based on which the terminal receives the CSI-RS is the same as the SD pattern based on which the network device sends the CSI-RS. This helps ensure that the terminal and the network device have a consistent understanding of the SD pattern of the CSI-RS, thereby ensuring that the terminal accurately measures the CSI-RS to obtain accurate CSI.

[0033] In combination with some embodiments of the first aspect, in some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0034] In combination with some embodiments of the first aspect, in some embodiments, the downlink transmission type is AFTM, and the terminal does not expect a different SD pattern activated by a channel state information configuration (CSI repot config) for the CSI-RS resource.

[0035] In combination with some embodiments of the first aspect. In some embodiments, the determining of the first SD pattern based on the type of downlink transmission and at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource includes: the type of downlink transmission is AFTM, multiple SD patterns in the at least one SD pattern are in an activated state, and the most recently activated SD pattern among the multiple activated SD patterns is determined as the first SD pattern.

[0036] In combination with some embodiments of the first aspect. In some embodiments, the determining of the first SD pattern in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission includes: the type of downlink transmission is AFTM, and the determining of the first SD pattern in the at least one SD pattern according to a first indication signaling sent by a network device.

[0037] In combination 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; control unit MAC CE.

[0038] In combination 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 report configuration (CSI report config); or an identifier of a subconfig in the CSI report config.

[0039] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: determining the type of downlink transmission in an explicit manner or an implicit manner.

[0040] In combination 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 according to a second indication signaling sent by a network device.

[0041] In combination with some embodiments of the first aspect, in some embodiments, determining the type of downlink transmission in an implicit manner includes: determining the type of downlink transmission according to the number of ports of downlink information sent by the network device.

[0042] In combination with some embodiments of the first aspect. In some embodiments, determining the type of the downlink transmission based on the port number of the downlink information sent by the network device includes: if the first port number of the downlink information most recently sent by the network device is less than the second port number of the downlink information sent by the network device the last time before the most recently sent downlink information, then determining the type of the downlink transmission is AFTM.

[0043] In second aspect, an embodiment of the present disclosure proposes a signal sending method, which is executed by a network device, and the method includes: determining a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; and sending CSI-RS according to the first SD pattern.

[0044] In the above embodiment, the SD pattern based on which the network device transmits the 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 the CSI-RS based on the first SD pattern to meet requirements related to the downlink transmission type, such as energy saving requirements.

[0045] In combination with some embodiments of the second aspect, in some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0046] In combination 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.

[0047] In combination with some embodiments of the second aspect. In some embodiments, the determining of the first SD pattern in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission includes: the type of downlink transmission is AFTM, multiple SD patterns in the at least one SD pattern are in an activated state, and determining the most recently activated SD pattern among the multiple activated SD patterns as the first SD pattern.

[0048] In combination with some embodiments of the second aspect. In some embodiments, the method further includes: the type of the downlink transmission 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 the at least one SD pattern, and the first SD pattern is used for the terminal to receive CSI-RS sent by a network device.

[0049] In combination 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; control unit MAC CE.

[0050] In combination 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 report configuration (CSI report config); or an identifier of a subconfig in the CSI report config.

[0051] In the third aspect, an embodiment of the present disclosure proposes a signal receiving device, which includes: a processing module for determining a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; and a transceiver module for receiving CSI-RS according to the first SD pattern.

[0052] In a fourth aspect, an embodiment of the present disclosure proposes a signal sending device, comprising: a processing module for determining a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; and a transceiver module for sending CSI-RS according to the first SD pattern.

[0053] In a fifth aspect, an embodiment of the present disclosure proposes a terminal, comprising: 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, enables the terminal to execute the signal receiving method described in the first aspect and the optional embodiment of the first aspect.

[0054] In the sixth aspect, an embodiment of the present disclosure proposes a network device, comprising: 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, enables the network device to execute the signal sending method described in the second aspect and the optional embodiment of the second aspect.

[0055] In the seventh aspect, an embodiment of the present disclosure proposes a signal receiving and sending method, including: a network device determines a first SD pattern within at least one spatial adjustment standard SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; the network device sends a CSI-RS to a terminal according to the first SD pattern; the terminal determines a first SD pattern within at least one SD pattern associated with the CSI-RS resource according to the type of downlink transmission; and the terminal receives the CSI-RS sent by the network device according to the first SD pattern.

[0056] In the eighth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device, the terminal is configured to implement the signal receiving method described in the first aspect and the optional embodiment of the first aspect, and the network device is configured to implement the signal sending method described in the second aspect and the optional embodiment of the second aspect.

[0057] In the ninth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the signal receiving method described in the first aspect and the optional embodiment of the first aspect, and / or the signal sending method described in the second aspect and the optional embodiment of the second aspect.

[0058] In the tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the signal receiving method described in the first aspect and the optional embodiment of the first aspect, and / or the signal sending method described in the second aspect and the optional embodiment of the second aspect.

[0059] In the eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the signal receiving method described in the first aspect and the optional embodiment of the first aspect, and / or the signal sending method described in the second aspect and the optional embodiment of the second aspect.

[0060] It is understandable that the above-mentioned signal receiving device, signal sending device, communication device, communication system, storage medium, program product, and computer program are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0061] The present disclosure provides signal receiving and transmitting methods and apparatus, communication devices, and storage media. In some embodiments, the terms signal receiving method, signal transmitting method, information processing method, and communication method are interchangeable; the terms signal receiving apparatus, signal transmitting apparatus, information processing apparatus, and communication apparatus are interchangeable; and the terms information processing system, communication system, and so on are interchangeable.

[0062] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0063] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0064] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0065] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc.

[0066] For example, when using articles such as “a”, “an”, and “the” in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

[0067] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0068] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0069] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The same applies when there are more branches, such as A, B, and C.

[0070] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0071] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description objects, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be constituted due to the use of prefixes.

[0072] For example, if the description object is "field," the ordinal number preceding "field" in "first field" and "second field" does not restrict the position or order of the "fields." "First" and "second" do not restrict whether the modified "fields" are in the same message, nor do they restrict the order of the "first field" and "second field." For another example, if the description object is "level," the ordinal number preceding "level" in "first level" and "second level" does not restrict the priority of the "levels." For another example, the number of description objects is not restricted by the ordinal number and can be one or more. For example, in the case of "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the description object is "device," "first device" and "second device" can be the same or different devices, and their types can be the same or different. For another example, if the description object is "information," "first information" and "second information" can be the same or different information, and their content can be the same or different.

[0073] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0074] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0075] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0076] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0077] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0078] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0079] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0080] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0081] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0082] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0083] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0084] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0085] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0086] As shown in FIG1 , a 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.

[0087] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0088] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB) in a 5G communication system, a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0089] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element 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), and a Next Generation Core (NGC).

[0090] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0091] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0092] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0093] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0094] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0095] FIG2 is an interactive schematic diagram illustrating a signal receiving and sending method according to an embodiment of the present disclosure.

[0096] Step S201: The network device sends a CSI-RS.

[0097] In some embodiments, the network device determines a first SD pattern.

[0098] In some embodiments, the network device sends the CSI-RS according to a first SD pattern.

[0099] In some embodiments, the network device determines a first SD pattern within at least one SD pattern associated with a CSI-RS resource.

[0100] In some embodiments, the network device determines the type of downstream transmission.

[0101] In some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0102] In some embodiments, the network device determines a first SD pattern within at least one SD pattern associated with a CSI-RS resource according to a type of downlink transmission.

[0103] 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 config.

[0104] In some embodiments, the downlink transmission type is AFTM, multiple SD patterns in at least one SD pattern are in an activated state, and the network device determines the most recently activated SD pattern among the multiple activated SD patterns as the first SD pattern.

[0105] 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 the at least one SD pattern, and the first SD pattern is used by the network device to send CSI-RS

[0106] Step S202: The terminal receives CSI-RS

[0107] In some embodiments, the terminal determines a first SD pattern.

[0108] In some embodiments, the terminal receives the CSI-RS according to the first SD pattern.

[0109] In some embodiments, the terminal determines a first SD pattern within at least one SD pattern associated with a CSI-RS resource.

[0110] In some embodiments, the terminal determines the type of downlink transmission.

[0111] In some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0112] In some embodiments, the terminal determines a first SD pattern within at least one SD pattern associated with a CSI-RS resource according to a type of downlink transmission.

[0113] In some embodiments, the downlink transmission type is AFTM, and the terminal does not expect that the channel state information configuration CSI repot config has a different SD pattern activated for the CSI-RS resource.

[0114] In some embodiments, determining the first SD pattern based on at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission includes:

[0115] The downlink transmission type is AFTM, multiple SD patterns in the at least one SD pattern are in an activated state, and the most recently activated SD pattern in the multiple activated SD patterns is determined to be the first SD pattern.

[0116] In some embodiments, determining the first SD pattern based on at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission includes:

[0117] The downlink transmission type is AFTM, and the first SD pattern is determined in the at least one SD pattern according to a first indication signaling sent by a network device.

[0118] 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; control unit MAC CE.

[0119] 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 report configuration CSI report config; an identifier of a subconfig in the CSI report config.

[0120] In some embodiments, the terminal determines the type of downlink transmission in an explicit manner or an implicit manner.

[0121] In some embodiments, determining the type of downlink transmission in an explicit manner includes: determining the type of downlink transmission according to a second indication signaling sent by a network device.

[0122] In some embodiments, the determining the type of downlink transmission in an implicit manner includes: determining the type of downlink transmission according to the number of ports of downlink information sent by the network device.

[0123] In some embodiments, the type of the downlink transmission is determined based on the port number of the downlink information sent by the network device, including: the first port number of the downlink information most recently sent by the network device is less than the second port number of the downlink information sent by the network device the last time before the most recent downlink information was sent, and the type of the downlink transmission is determined to be AFTM.

[0124] The communication method involved in the embodiment of the present disclosure may include at least one of step S201 to step S202. For example, step S201 may be implemented as an independent embodiment, and step S202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0125] In some embodiments, steps S201 and S202 may be performed in an interchangeable order or simultaneously.

[0126] In some embodiments, step S201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0127] In some embodiments, step S202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0128] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0129] In some embodiments, the network device may send a channel state information reference signal (CSI-RS), 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 accordingly.

[0130] In some embodiments, the network device may send a channel state information report configuration (CSI report config) to the terminal, and the terminal may receive a CSI-RS and / or send a CSI report to the network device according to the CSI report config.

[0131] In some embodiments, a network device may adjust a spatial pattern for certain reasons. In some embodiments, adjusting the spatial pattern includes at least one of adjusting the number of transmission resource units (TxRUs) or adjusting the number of antenna elements, where antenna elements may also be referred to as spatial elements.

[0132] For example, when a network device is in a Network Energy Saving (NES) scenario, in order to reduce the power consumption of the network device, the number of spatial elements of downlink transmission can be dynamically reduced based on the dynamic changes of the transmission load, thereby reducing the energy consumption of the network device.

[0133] In some embodiments, the network device adjusts the number of spatial elements of downlink transmission in different ways, which can correspond to different downlink transmission types. For example, the downlink transmission type includes at least one of the following: measurement first then adaptation (MFTA) and adaptation first then measurement (AFTM).

[0134] In some embodiments, the CSI report config may include at least one subconfiguration. In some embodiments, different subconfigurations may correspond to different spatial adaptation (SD) patterns and / or different power adaptation (PD) patterns.

[0135] For example, based on multiple sub-configurations, the terminal can measure CSI-RS according to multiple SD patterns or PD patterns. This helps to ensure that CSI corresponding to multiple SD patterns and / or PD patterns can be obtained, so as to more comprehensively and accurately characterize the channel states of different patterns, which is conducive to further scheduling of subsequent data.

[0136] It should be noted that the following embodiments mainly illustrate the technical solutions of the present disclosure using the SD pattern. In some embodiments, in embodiments involving the SD pattern, the SD pattern can be replaced with a PD pattern. In some embodiments, in embodiments involving the SD pattern, the SD pattern can be replaced with an SD pattern and / or a PD pattern.

[0137] For example, when a network device is in NES mode, it can achieve energy savings by adjusting the spatial pattern. For example, adjusting the spatial pattern involves reducing the number of TxRUs. Due to the reduced number of TxRUs, the network device can only perform downlink transmission based on a partial SD pattern.

[0138] In some embodiments, the content of the downlink transmission includes at least one of the following: a physical downlink control channel (Physical Downlink Control Channel, PDCCH), a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), a CSI-RS, and a demodulation reference signal (Demodulation Reference Signal, DMRS).

[0139] For example, when downlink transmission includes CSI-RS, the SD pattern can be configured through a subconfig. The subconfig is associated with the SD pattern on the one hand, and with a CSI-RS resource on the other hand. The CSI-RS resource can be associated with the SD pattern associated with the associated subconfig. Since a CSI-RS resource can be associated with at least one subconfig, a CSI-RS resource can be associated with at least one SD pattern.

[0140] In some embodiments, the SD pattern and the number of antenna ports may correspond one to one, for example, SD pattern #1 corresponds to 32 antenna ports, and SD pattern #2 corresponds to 16 antenna ports.

[0141] 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.

[0142] In some embodiments, when a subconfig activates a certain SD pattern, the network device sends a CSI-RS to the terminal based on the SD pattern on the CSI-RS resource associated with the subconfig.

[0143] The terminal can determine the activated subconfig, and thus determine that the SD pattern associated with the sub-config is activated, and then can receive the CSI-RS sent by the network device in the CSI-RS resource associated with the activated subconfig based on the activated SD pattern.

[0144] However, the problem is that when the network device is in NES mode, it can only send CSI-RS based on partially activated SD patterns due to the reduced number of TxRUs. The terminal is unaware that the network device can only send CSI-RS based on partially activated SD patterns due to the reduced number of TxRUs. Therefore, the terminal still receives CSI-RS based on all activated SD patterns. This will result in inaccurate CSI obtained by the terminal based on CSI-RS, affecting the accuracy of the CSI report.

[0145] The technical solution of the present disclosure is exemplarily described below with reference to several drawings.

[0146] FIG3A is a schematic diagram showing a spatial format of a downlink transmission type according to an embodiment of the present disclosure.

[0147] In MFTA mode, the network device can keep all TxRUs and / or antenna units activated (active) when sending CSI-RS. Taking the activation of all TxRUs as an example, since all TxRUs are activated, the network device can send CSI-RS to the terminal based on each SD pattern. For example, as shown in Figure 3A, the network device can send CSI-RS to the terminal based on SD pattern #1 (that is, transmit 32-port CSI-RS resource), and can also send CSI-RS to the terminal based on SD pattern #2 (that is, transmit 16-port CSI-RS resource).

[0148] It should be noted that although Figure 3A shows that the network device transmits CSI-RS based on one SD pattern (SD pattern #1 or SD pattern #2) in one time domain unit, this is only an example. Since all TxRUs are activated, the network device can transmit CSI-RS based on one or more SD patterns in any time domain unit. The time domain unit includes at least one of the following: frame, subframe, time slot, and symbol.

[0149] The terminal can receive the CSI-RS sent by the base station based on different SD patterns (also called TxRU patterns), and generate a CSI report based on the CSI obtained by measuring the CSI-RS and send it to the network device. For example, the terminal can obtain a single CSI from the CSI-RS sent based on multiple SD patterns, generate a single CSI report and send it to the network device. Alternatively, the terminal can obtain multiple CSIs from the CSI-RS sent based on multiple SD patterns, generate multiple CSI reports and send them to the network device.

[0150] 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 conservation when sending PDSCH. Since network devices can send CSI-RS and PDSCH alternately, this requires the network device to frequently turn TxRUs on and off, or frequently switch the TxRU pattern. This increases the power consumption of the network device and, due to the switching time required, can lead to reduced transmission performance. Therefore, based on MFTA, the AFTM mode was introduced.

[0151] FIG3B is a schematic diagram showing another spatial format of downlink transmission type according to an embodiment of the present disclosure.

[0152] In AFTM mode, the network device can shut down some TxRUs and / or antenna units, keeping only some TxRUs and / or antenna units active. Taking the shutdown of some TxRUs as an example, due to the limitation of some TxRUs being shut down, the network device can only send CSI-RS to the terminal based on SD pattern #2 (that is, transmit 16-port CSI-RS resources), but cannot send CSI-RS to the terminal based on SD pattern #1 (that is, transmit 32-port CSI-RS resources).

[0153] For example, as shown in Figure 3B, the network device first sends CSI-RS to the terminal based on SD pattern #1, indicating to the terminal that SD pattern #1 is activated. The network device then decides to shut down some TxRUs. Due to the limitation that only some TxRUs are activated, the network device can only send CSI-RS to the terminal based on SD pattern #2. The terminal should measure the CSI corresponding to the CSI-RS of 16 ports (however, due to the following technical issues, current terminals cannot implement this operation), and then send the CSI report of 16 ports to the network device. After a scheduling delay, the network device can continue to send CSI-RS to the terminal based on SD pattern #2.

[0154] In the scenario shown in Figure 3B, in AFTM mode, although the network device adjusts its CSI-RS transmission to the terminal based on SD pattern #1 instead of SD pattern #2, the terminal is unaware that the network device has disabled some TxRUs and can only transmit CSI-RS to the terminal based on SD pattern #2. For the terminal, SD pattern #1 is still active, so the terminal will still receive the CSI-RS sent by the network device based on SD pattern #1. This shows that the terminal and the network device have inconsistent understandings of the SD pattern of the CSI-RS, which results in inaccurate CSI obtained by the terminal based on the CSI-RS, affecting the accuracy of the CSI report.

[0155] It should be noted that what is described in Figure 3B is only an 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 turning off some TxRUs, and is not limited to sending CSI-RS to the terminal based on only one SD pattern after turning off some TxRUs.

[0156] 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 shutting down part of the TxRU, and send CSI-RS to the terminal only based on SD pattern #2 after shutting down part of the TxRU.

[0157] In a first aspect, embodiments of the present disclosure provide a signal receiving method. Figure 4 is a schematic flow chart illustrating a signal receiving method according to an embodiment of the present disclosure. The signal receiving method illustrated in this embodiment can be executed by a terminal.

[0158] As shown in FIG4 , the signal receiving method may include the following steps:

[0159] In step S401, according to the type of downlink transmission, a first SD pattern is determined in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource;

[0160] In step S402, a CSI-RS is received according to the first SD pattern.

[0161] It should be noted that the embodiment shown in FIG. 4 can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed and the present disclosure does not limit it.

[0162] In some embodiments, a CSI-RS resource may be associated with at least one SD pattern. For example, the SD pattern may be configured via a subconfig, where the subconfig is associated with the SD pattern and with a CSI-RS resource. The CSI-RS resource may then be associated with the SD pattern associated with the associated subconfig. Since a CSI-RS resource may be associated with at least one subconfig, a CSI-RS resource may be associated with at least one SD pattern.

[0163] According to an embodiment of the present disclosure, the SD pattern based on which a terminal receives CSI-RS may not be fixed but may be variable. Specifically, the terminal may determine a first SD pattern from at least one SD pattern associated with a CSI-RS resource based on the type of downlink transmission, and receive CSI-RS based on the first SD pattern. This means that the SD pattern based on which the terminal receives CSI-RS may vary depending on the type of downlink transmission.

[0164] This helps ensure that the SD pattern based on which the terminal receives the CSI-RS is the same as the SD pattern based on which the network device sends the CSI-RS. This helps ensure that the terminal and the network device have a consistent understanding of the SD pattern of the CSI-RS, thereby ensuring that the terminal accurately measures the CSI-RS to obtain accurate CSI.

[0165] In some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0166] For example, when the downlink transmission type is MFTA, the terminal may receive CSI-RS according to an activated SD pattern, wherein the activated SD pattern may refer to one or more SD patterns indicated as activated in at least one SD pattern by a network device through signaling.

[0167] For example, when the downlink transmission type is AFTM, the network device can shut down some TxRUs. However, due to the shutdown of some TxRUs, the network device can only send CSI-RS based on some of the multiple SD patterns activated before the shutdown of some TxRUs, and the terminal is unaware that the network device can only send CSI-RS based on some of the multiple SD patterns. Therefore, the technical problem faced by this application mainly exists when the downlink transmission type is AFTM. The following illustrates the case where the downlink transmission type is AFTM through several embodiments.

[0168] In some embodiments, the downlink transmission type is AFTM, and the terminal does not expect that the channel state information configuration CSI report config is different from the SD pattern activated for the CSI-RS resource.

[0169] In some embodiments, the SD pattern associated with the CSI-RS can be activated by the CSI report config. When the terminal determines that the type of downlink transmission 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 be determined that the CSI report config activates one SD pattern for the CSI-RS resource.

[0170] For example, in AFTM mode, before shutting down some TxRUs, the network device sends CSI-RS to the terminal based on SD pattern #1 and SD pattern #2. After shutting down some TxRUs, the network device sends CSI-RS to the terminal based only 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 different SD patterns for the CSI-RS resources. In this case, it may only determine that the CSI report config activates one SD pattern for the CSI-RS resources. For example, the network device may instruct SD pattern #1 to be deactivated, so that the terminal can determine that the CSI report config only activates SD pattern #2 for the CSI-RS resources, and then receive the CSI-RS sent by the network device based on SD pattern #2. Accordingly, it can be ensured that the terminal and the network device have a consistent understanding of the SD pattern of the CSI-RS, thereby ensuring that the terminal accurately measures the CSI-RS to obtain accurate CSI.

[0171] FIG5 is a schematic diagram showing the relationship between a space adjustment format and a sub-configuration according to an embodiment of the present disclosure.

[0172] As shown in FIG5 , 3 CSI-RS resources and 2 CSI report configs are taken as an example.

[0173] The three CSI-RS resources are CSI-RS resource#1, CSI-RS resource#2 and CSI-RS resource#3, among which CSI-RS resource#1 is associated with n1 SD patterns, namely SD pattern#1 to SD pattern#n1, CSI-RS resource#1 is associated with n2 SD patterns, namely SD pattern#1 to SD pattern#n2, and CSI-RS resource#1 is associated with n3 SD patterns, namely SD pattern#1 to SD pattern#n3.

[0174] The two CSI report configs are CSI report config#1 and CSI report config#2, where 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.

[0175] The subconfig in CSI report config#1 is associated with the SD pattern associated with CSI-RS resource#1 and CSI-RS resource#2 and can be used to activate the SD pattern 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. Among them, subconfig#1 in CSI report config#1 can also be used to activate SD pattern#1 associated with CSI-RS resource#2.

[0176] The subconfig in CSI report config#2 is associated with the SD pattern associated with CSI-RS resource#2 and CSI-RS resource#3 and can be used to activate the SD pattern 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. Among them, subconfig#3 in CSI report config#2 can also be used to activate SD pattern#3 associated with CSI-RS resource#3.

[0177] It can be seen that in the embodiment shown in Figure 5, a single CSI report config can activate multiple SD patterns for CSI-RS resources. 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 CSI-RS resources. 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.

[0178] In downlink transmission in AFTM mode, due to the shutdown of some TxRUs, the network device can only send CSI-RS based on some SD patterns among the multiple SD patterns activated before the shutdown of some TxRUs. In this case, if the terminal still receives CSI-RS based on multiple SD patterns, it will cause the terminal and the network device to have inconsistent understanding of the SD pattern of CSI-RS, affecting the accuracy of the CSI report.

[0179] In some embodiments, the terminal does not expect the channel state information configuration CSI report config to activate a different SD pattern for the CSI-RS resource, which may include at least one of the following:

[0180] The terminal does not expect a single CSI report config to activate different SD patterns for the CSI-RS resources;

[0181] The terminal does not expect that multiple CSI report configurations activate different SD patterns for the CSI-RS resources.

[0182] For example, the terminal may not expect CSI report config#1 to activate different SD patterns for CSI-RS resource#1. Specifically, the terminal may not expect any subconfig in CSI report config#1 to activate different SD patterns for CSI-RS resource#1. In this case, the terminal may 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. When determining that the type of downlink transmission is AFTM, the terminal may also determine that only one SD pattern is activated for CSI-RS resource#1 by subconfig#1 and subconfig#2, for example, determine to activate SD pattern#2, so that the terminal can receive CSI-RS in CSI-RS resource#1 according to SD pattern#2.

[0183] Correspondingly, when downlink transmission is in ATFM mode, the network device disables some TxRUs for energy conservation and can only send CSI-RS according to SD pattern #2. This ensures that the network device and the terminal have the same understanding of the SD pattern, namely SD pattern #2.

[0184] For example, the terminal may not expect that CSI report config#1 and CSI report config#2 activate different SD patterns for CSI-RS resource#1, so the terminal may determine that any subconfig in CSI report config#1 and any subconfig in CSI report config#2 only activate one SD pattern for CSI-RS resource#1.

[0185] 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, wherein subconfig#1 activates SD pattern#1 for CSI-RS resource#1, and subconfig#3 activates SD pattern#3 for CSI-RS resource#1.

[0186] The network device can instruct the terminal to deactivate subconfig#3, so the terminal can determine that only subconfig#1 is activated, thereby determining that SD pattern#1 configured by subconfig#1 is activated, and then the terminal can receive CSI-RS in CSI-RS resource#1 according to SD pattern#1.

[0187] Correspondingly, when downlink transmission is in ATFM mode, the network device disables some TxRUs for energy conservation and can only send CSI-RS according to SD pattern #1. This ensures that the network device and the terminal have the same understanding of the SD pattern, which is SD pattern #1.

[0188] It should be noted that when the downlink transmission is in ATFM mode, the terminal can receive CSI-RS based on one SD pattern as shown in the previous embodiment. However, the embodiments of the present 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, although the network device has turned off 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.

[0189] In some embodiments, the terminal expects that the SD pattern activated by the CSI report config for the CSI-RS resource is a specific SD pattern.

[0190] For example, the specific SD pattern includes at least one of the following: a specific number of SD patterns, a specifically identified SD pattern, and a specific number of recent SD patterns.

[0191] Take the case where the specific SD pattern includes an SD pattern with a specific identifier as an example. For example, the SD pattern with a specific identifier includes SD pattern #1 with an identifier of 1 and SD pattern #2 with an identifier of 2.

[0192] When the downlink transmission is in ATFM mode, the terminal may expect that the SD pattern activated by the CSI report config for the CSI-RS resource is SD pattern #1 and SD pattern #2 identified as 2.

[0193] For example, the subconfigs activated in CSI report config#1 include subconfig#1, subconfig#2, and subconfig#3, where 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.

[0194] The network device can instruct the terminal to deactivate subconfig#3, so the terminal can determine that only subconfig#1 and subconfig#2 are activated, thereby determining that SD pattern#1 configured by subconfig#1 and SD pattern#2 configured by subconfig#2 are activated, and then the terminal can receive CSI-RS in CSI-RS resource#1 according to SD pattern#1 and SD pattern#2.

[0195] Correspondingly, when downlink transmission is in ATFM mode, the network device disables some TxRUs for energy conservation. Although CSI-RS cannot be sent based on SD pattern #3, it can still be sent based on SD pattern #1 and SD pattern #2. This ensures that the network device and the terminal have the same understanding of the SD pattern, namely SD pattern #1 and SD pattern #2.

[0196] In some embodiments, determining the first SD pattern based on at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission includes:

[0197] The downlink transmission type is AFTM, multiple SD patterns in the at least one SD pattern are in an activated state, and the latest activated SD pattern (for example, the SD pattern corresponding to the latest activation signaling) among the multiple activated SD patterns is determined to be the first SD pattern.

[0198] For example, when the terminal determines that the type of downlink transmission is AFTM, when multiple SD patterns in at least one SD pattern associated with the CSI-RS resource are in an activated state, the terminal can determine the most recently activated SD pattern among the multiple activated SD patterns and use the most recently activated SD pattern as the first SD pattern. The activated SD pattern may refer to one or more SD patterns indicated as activated in at least one SD pattern by the network device through signaling.

[0199] 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 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 latest activated SD pattern, and thus SD pattern#2 can be determined as the first SD pattern, and then CSI-RS can be received in CSI-RS resource#1 according to SD pattern#2.

[0200] In some embodiments, determining the first SD pattern based on at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission includes:

[0201] The downlink transmission type is AFTM, multiple subconfigs in the CSI report config are in an activated state, and the SD pattern associated with the most recently activated subconfig among the multiple subconfigs in the activated state is determined to be the first SD pattern.

[0202] For example, when the terminal determines that the downlink transmission type is AFTM, the terminal determines that multiple subconfigs in the CSI report config are in an activated state. The terminal can determine the most recently activated subconfig among these multiple activated subconfigs and use the SD pattern associated with the most recently activated subconfig as the first SD pattern. The activated subconfig may refer to one or more subconfigs indicated as activated by the network device through signaling among multiple subconfigs in the CSI report config.

[0203] For example, for CSI report config #1, the activated 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 that T2 is later than T1, then subconfig #2 can be determined to be the most recently activated SD pattern. Therefore, SD pattern #2 associated with subconfig #2 is determined as the first SD pattern, and CSI-RS can be received in CSI-RS resource #1 based on SD pattern #2.

[0204] In some embodiments, determining the first SD pattern based on at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission includes:

[0205] The downlink transmission type is AFTM, and the first SD pattern is determined in the at least one SD pattern according to a first indication signaling sent by a network device.

[0206] For example, when the terminal determines that the downlink transmission type is AFTM, the terminal can receive the first indication signaling sent by the network device. The first indication signaling can be received before the terminal determines that the downlink transmission type is AFTM, or can be received after the terminal determines that the downlink transmission type is AFTM, and this disclosure is not limited to this.

[0207] The first indication signaling can indicate an SD pattern in at least one SD pattern associated with the CSI-RS resource (for example, 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 indication signaling as the first SD pattern.

[0208] For example, for CSI-RS resource#1, CSI-RS resource#1 is associated with SD pattern#1 to SD pattern#n1. The terminal determines that the first indication signaling indicates SD pattern#2 in SD pattern#1 and SD pattern#n1. 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.

[0209] In some embodiments, the first indication signaling may also indicate the first SD pattern among a plurality of activated SD patterns of the at least one SD pattern.

[0210] For example, for CSI-RS resource#1, SD pattern#1 and SD pattern#2 in the SD pattern associated with CSI-RS resource#1 are in an activated state. The terminal determines that the first indication signaling indicates SD pattern#2 in SD pattern#1 and SD pattern#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.

[0211] In some embodiments, the first indication signaling includes at least one of the following:

[0212] Cell-specific signaling;

[0213] Radio Resource Control (RRC) signaling;

[0214] Downlink Control Information (DCI);

[0215] Media Access Control Control Element (MAC CE).

[0216] For example, the cell-specific signaling includes at least one of the following: a system information block (SIB) and a paging message. The SIB may be an existing SIB or a newly defined SIB.

[0217] In some embodiments, the first indication signaling is used to indicate at least one of the following:

[0218] Identification of CSI-RS resources;

[0219] Identifier of the CSI-RS resource set;

[0220] Identification of SD pattern;

[0221] Channel state information report configuration CSI report config identifier

[0222] The identifier of the subconfig in the CSI report config.

[0223] Among them, the identifier in the embodiment of the present disclosure can also be called an index.

[0224] For example, the first indication signaling may indicate that the identifier of the CSI-RS resource is CSI-RS resource#1, and the identifier of the SD pattern is SD pattern#2, so that 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 indication signaling is not limited to one, but may be multiple, and the identifier of the SD pattern indicated by the first indication signaling is not limited to one, but may be multiple.

[0225] For example, the first indication signaling may indicate the identifier 1 of the CSI report config, based on which the terminal can determine CSI report config#1; and indicate the identifier 2 of the subconfig, based on which the terminal can determine subconfig#2, wherein the CSI report config and subconfig corresponding to the identifier indicated by the first indication signaling may be the CSI report config and subconfig used by the terminal to determine the activated CSI report config and subconfig, and then the terminal can determine the SD pattern associated with the subconfig. For CSI-RS resource#1, the terminal can thereby determine that the SD pattern#2 in the CSI-RS resource#1 associated with subconfig#2 in CSI report config#1 is the first SD pattern. Of course, the identifier of the CSI report config indicated by the first indication signaling is not limited to one, but may be multiple, and the identifier of the subconfig indicated by the first indication signaling is not limited to one, but may be multiple, so the first SD pattern determined by the terminal may also be multiple SD patterns.

[0226] FIG6A is a schematic structural diagram of a first indication signaling according to an embodiment of the present disclosure.

[0227] As shown in Figure 6A, taking the example where the first indication signaling includes a MAC CE and the first indication signaling is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern, the MAC CE may include bytes Oct 1 to Oct N+3.

[0228] Among them, Oct 1 includes function indication information A / D, which is used to indicate whether the function of the bit at this position in the subsequent byte is to indicate activation, deactivation, serving cell ID (Serving Cell ID) and bandwidth part ID (BWP (Bandwidth Part) ID).

[0229] 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 of 1 may indicate activation of CSI-RS resource set #1, and R of 0 may indicate deactivation of CSI-RS resource set #1. Oct 3 to Oct n+3 include identifiers of activated SD patterns among 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 SD pattern identifier in Oct 3 is SD pattern #2, it may indicate activation of SD pattern #2.

[0230] In some embodiments, Oct 2 includes an activation indication R and an identifier of a CSI report config, such as CSI report config #1. For example, if R is 1, it may indicate activation of CSI report config #1, and if R is 0, it may indicate deactivation of CSI report config #1. Oct 3 to Oct n+3 include identifiers of activated subconfigs in the subconfig of the CSI report config, such as one or more subconfigs from subconfig #1 to subconfig #n. For example, if the subconfig identifier in Oct 3 is subconfig #2, it may indicate that subconfig #2 is activated. Based on this, the terminal can determine that the SD pattern associated with subconfig #2 (e.g., SD pattern #2) is activated.

[0231] FIG6B is a schematic structural diagram showing another first indication signaling according to an embodiment of the present disclosure.

[0232] As shown in Figure 6B, taking the example where the first indication signaling includes a MAC CE and the first indication signaling is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern, the MAC CE may include bytes Oct 1 to Oct N+3.

[0233] Among them, Oct 1 includes function indication information A / D, which is used to indicate whether the function of the bit at this position in the subsequent byte is to indicate activation, deactivation, serving cell ID (Serving Cell ID) and bandwidth part ID (BWP (Bandwidth Part) ID).

[0234] Oct 2 includes an activation indication R and an identifier of a CSI-RS resource, such as CSI-RS resource#1. For example, R is 1, which indicates activation of CSI-RS resource#1; and R is 0, which indicates deactivation of CSI-RS resource#1.

[0235] Oct 3 to Oct n+3 contain the activation indicator 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, if R in Oct 3 is 1, it can indicate activation of SD pattern #1 in CSI-RS resource #1, and if R in Oct 3 is 0, it can indicate deactivation of SD pattern #1 in CSI-RS resource #1.

[0236] In some embodiments, the method further includes: determining the type of downlink transmission in an explicit manner or an implicit manner. The terminal may determine the type of downlink transmission as MFTA or AFTM in an explicit manner or in an implicit manner.

[0237] The following describes the explicit mode and the implicit mode respectively by means of several embodiments.

[0238] In some embodiments, determining the type of downlink transmission in an explicit manner includes: determining the type of downlink transmission according to a second indication signaling sent by a network device.

[0239] For example, when the network device determines to shut down some TxRUs, it may send a second indication signaling to the terminal, where the second indication signaling is used to indicate that the downlink transmission type is AFTM or MFTA. The terminal may determine that the downlink transmission type after receiving the second indication signaling is AFTM or MFTA based on the second indication signaling.

[0240] In some embodiments, determining the type of downlink transmission in an implicit manner includes: determining the type of downlink transmission according to a port number of the downlink information sent by the network device.

[0241] In some embodiments, the type of the downlink transmission is determined based on the port number of the downlink information sent by the network device, including: the first port number of the downlink information sent by the network device most recently (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, the terminal receives paging) is less than the second port number of the downlink information sent by the network device the last time before the most recent downlink information was sent, and the type of the downlink transmission is determined to be AFTM.

[0242] For example, a terminal can receive downlink information sent by a network device and determine the port number of the downlink information, e.g., the downlink information includes at least one of the following: PDCCH, PDSCH, CSI-RS, and DMRS. Furthermore, the terminal can determine the first port number, port#1, of the downlink information most recently sent by the network device, and the second port number, port#2, of the downlink information sent by the network device before the most recently sent downlink information. The terminal compares 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 downlink information. Generally, the terminal can determine that the network device has entered network access mode, thereby determining that the downlink transmission type is AFTM.

[0243] In a second aspect, embodiments of the present disclosure provide a signal transmission method. Figure 7 is a schematic flow chart illustrating a signal transmission method according to an embodiment of the present disclosure. The signal transmission method illustrated in this embodiment can be executed by a network device.

[0244] As shown in FIG7 , the signal receiving method may include the following steps:

[0245] In step S701, according to the type of downlink transmission, a first SD pattern is determined in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource;

[0246] In step S702, a CSI-RS is sent according to a first SD pattern.

[0247] It should be noted that the embodiment shown in FIG. 7 can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed and the present disclosure does not limit it.

[0248] In some embodiments, a CSI-RS resource may be associated with at least one SD pattern. For example, the SD pattern may be configured via a subconfig, where the subconfig is associated with the SD pattern and with a CSI-RS resource. The CSI-RS resource may then be associated with the SD pattern associated with the associated subconfig. Since a CSI-RS resource may be associated with at least one subconfig, a CSI-RS resource may be associated with at least one SD pattern.

[0249] According to an embodiment of the present disclosure, the SD pattern based on which a network device transmits a 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 a CSI-RS resource based on the type of downlink transmission, and transmit the CSI-RS based on the first SD pattern to meet requirements related to the downlink transmission type, such as energy conservation.

[0250] Correspondingly, the terminal may also 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 receive the CSI-RS based on the first SD pattern. This helps ensure that the SD pattern based on which the terminal receives the CSI-RS is the same as the SD pattern based on which the network device transmits the CSI-RS, thereby ensuring that the terminal and the network device have a consistent understanding of the CSI-RS SD pattern, thereby ensuring that the terminal accurately measures the CSI-RS to obtain accurate CSI.

[0251] In some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0252] For example, when the downlink transmission type is MFTA, the terminal may receive CSI-RS according to an activated SD pattern, wherein the activated SD pattern may refer to one or more SD patterns indicated as activated in at least one SD pattern by a network device through signaling.

[0253] For example, when the downlink transmission type is AFTM, the network device can turn off some TxRUs. Due to the limitation of turning off some TxRUs, relative to the multiple SD patterns activated before turning off some TxRUs, the network device can only send CSI-RS based on some SD patterns among the multiple SD patterns, and the terminal is unaware that the network device can only send CSI-RS based on some SD patterns.

[0254] 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.

[0255] Correspondingly, when the downlink transmission type is AFTM, the terminal may not expect the CSI report config to have a different SD pattern for CSI-RS resource activation.

[0256] For example, in AFTM mode, the network device sends CSI-RS to the terminal based on SD pattern #1 and SD pattern #2 before shutting down some TxRUs, and sends CSI-RS to the terminal only based on SD pattern #2 after shutting down some TxRUs.

[0257] When the terminal determines that 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 may determine that the CSI report config activates only one SD pattern for the CSI-RS resource. For example, the network device may instruct the deactivation of SD pattern #1, and then the CSI repot config activates only SD pattern #2 for the CSI-RS resource. The terminal can then determine that the CSI report config activates only 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 the network device have a consistent understanding of the CSI-RS SD pattern, thereby ensuring that the terminal accurately measures the CSI-RS and obtains accurate CSI.

[0258] In some embodiments, determining a first SD pattern based on at least one spatially adjusted SD pattern associated with a channel state information reference signal CSI-RS resource according to a type of downlink transmission includes:

[0259] The downlink transmission type is AFTM, multiple SD patterns in at least one SD pattern are in an activated state, and a newly activated SD pattern among the multiple activated SD patterns is determined as a first SD pattern.

[0260] For example, when the downlink transmission type of the network device is AFTM, when multiple SD patterns in at least one SD pattern associated with the CSI-RS resource are in an activated state, the network device may determine the most recently activated SD pattern among the multiple activated SD patterns and use the most recently activated SD pattern as the first SD pattern. The activated SD pattern may refer to one or more SD patterns indicated as activated in the at least one SD pattern by the network device through signaling.

[0261] 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, and that T2 is later than T1. Therefore, SD pattern #2 can be determined to be the most recently activated SD pattern, and thus SD pattern #2 can be determined as the first SD pattern. CSI-RS can then be sent in CSI-RS resource #1 according to SD pattern #2. Correspondingly, the terminal receives CSI-RS in CSI-RS resource #1 according to SD pattern #2.

[0262] In some embodiments, the signal sending method also 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.

[0263] For example, when the network device determines that the downlink transmission type is AFTM, it can send a first indication signaling to the terminal. The first indication signaling can be sent before the network device determines that the downlink transmission type is AFTM, or it can be sent after the network device determines that the downlink transmission type is AFTM, and this disclosure does not limit this.

[0264] The first indication signaling can indicate an SD pattern in at least one SD pattern associated with the CSI-RS resource (for example, it can indicate the index of the SD pattern, or it can indicate other information of the SD pattern). The first SD pattern is used by the network device to send CSI-RS. Based on this, the terminal can determine the first SD pattern, and then receive CSI-RS based on the first SD pattern.

[0265] For example, for CSI-RS resource#1, CSI-RS resource#1 is associated with SD pattern#1 to SD pattern#n1, and 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 can receive CSI-RS in CSI-RS resource#1 according to SD pattern#2.

[0266] In some embodiments, the first indication signaling may also indicate the first SD pattern among a plurality of SD patterns in an activated state of at least one SD pattern.

[0267] For example, for CSI-RS resource#1, SD pattern#1 and SD pattern#2 in the SD pattern associated with CSI-RS resource#1 are in an activated state, and 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 can receive CSI-RS in CSI-RS resource#1 according to SD pattern#2.

[0268] 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; control unit MAC CE.

[0269] For example, the cell-specific signaling includes at least one of the following: a system information block (SIB) and a paging message (paging), wherein the SIB may be an existing SIB or a newly defined SIB.

[0270] 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 report configuration (CSI report config); or an identifier of a subconfig in the CSI report config. The identifier in the embodiments of the present disclosure may also be referred to as an index.

[0271] For example, the first indication signaling may indicate that the identifier of the CSI-RS resource is CSI-RS resource#1, and the identifier of the SD pattern is SD pattern#2, so that 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 indication signaling is not limited to one, but may be multiple, and the identifier of the SD pattern indicated by the first indication signaling is not limited to one, but may be multiple.

[0272] For example, the first indication signaling may indicate the identifier 1 of the CSI report config, based on which the terminal can determine CSI report config#1; and indicate the identifier 2 of the subconfig, based on which the terminal can determine subconfig#2, wherein the CSI report config and subconfig corresponding to the identifier indicated by the first indication signaling may be the CSI report config and subconfig used by the terminal to determine the activated CSI report config and subconfig, and then the terminal can determine the SD pattern associated with the subconfig. For CSI-RS resource#1, the terminal can thereby determine that the SD pattern#2 in the CSI-RS resource#1 associated with subconfig#2 in CSI report config#1 is the first SD pattern. Of course, the identifier of the CSI report config indicated by the first indication signaling is not limited to one, but may be multiple, and the identifier of the subconfig indicated by the first indication signaling is not limited to one, but may be multiple, so the first SD pattern determined by the terminal may also be multiple SD patterns.

[0273] As shown in Figure 6A, taking the example where the first indication signaling includes a MAC CE and the first indication signaling is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern, the MAC CE may include bytes Oct 1 to Oct N+3.

[0274] Among them, Oct 1 includes function indication information A / D, which is used to indicate whether the function of the bit at this position in the subsequent byte is to indicate activation, deactivation, serving cell ID (Serving Cell ID) and bandwidth part ID (BWP (Bandwidth Part) ID).

[0275] 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 of 1 may indicate activation of CSI-RS resource set #1, and R of 0 may indicate deactivation of CSI-RS resource set #1. Oct 3 to Oct n+3 include identifiers of activated SD patterns among 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 SD pattern identifier in Oct 3 is SD pattern #2, it may indicate activation of SD pattern #2.

[0276] In some embodiments, Oct 2 includes an activation indication R and an identifier of a CSI report config, such as CSI report config #1. For example, if R is 1, it may indicate activation of CSI report config #1, and if R is 0, it may indicate deactivation of CSI report config #1. Oct 3 to Oct n+3 include identifiers of activated subconfigs in the subconfig of the CSI report config, such as one or more subconfigs from subconfig #1 to subconfig #n. For example, if the subconfig identifier in Oct 3 is subconfig #2, it may indicate that subconfig #2 is activated. Based on this, the terminal can determine that the SD pattern associated with subconfig #2 (e.g., SD pattern #2) is activated.

[0277] As shown in Figure 6B, taking the example where the first indication signaling includes a MAC CE and the first indication signaling is used to indicate the identifier of the CSI-RS resource and the identifier of the SD pattern, the MAC CE may include bytes Oct 1 to Oct N+3.

[0278] Among them, Oct 1 includes function indication information A / D, which is used to indicate whether the function of the bit at this position in the subsequent byte is to indicate activation, deactivation, serving cell ID (Serving Cell ID) and bandwidth part ID (BWP (Bandwidth Part) ID).

[0279] Oct 2 includes an activation indication R and an identifier of a CSI-RS resource, such as CSI-RS resource#1. For example, R is 1, which indicates activation of CSI-RS resource#1; and R is 0, which indicates deactivation of CSI-RS resource#1.

[0280] Oct 3 to Oct n+3 contain the activation indicator 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, if R in Oct 3 is 1, it can indicate activation of SD pattern #1 in CSI-RS resource #1, and if R in Oct 3 is 0, it can indicate deactivation of SD pattern #1 in CSI-RS resource #1.

[0281] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0282] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0283] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0284] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0285] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0286] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like can be used interchangeably.

[0287] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0288] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0289] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0290] In some embodiments, the terms "certain", "preset", "preset", "set", "indicate", "a certain", "arbitrary", "first" and the like can be used interchangeably, and "certain A", "preset A", "set A", "indicate A", ...

[0291] Corresponding to the aforementioned embodiments of the signal receiving method and the signal sending method, the present disclosure also provides embodiments of a signal receiving device and a signal sending device.

[0292] FIG8 is a schematic block diagram of a signal receiving device according to an embodiment of the present disclosure. As shown in FIG8 , the signal receiving device includes: a processing module 801 and a transceiver module 802 .

[0293] The processing module is used to determine a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; the transceiver module is used to receive the CSI-RS according to the first SD pattern.

[0294] In some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0295] In some embodiments, the downlink transmission type is AFTM, and the terminal does not expect the channel state information configuration CSI repot config to be different from the SD pattern activated for the CSI-RS resource.

[0296] In some embodiments, the processing module is of AFTM type for downlink transmission, multiple SD patterns in at least one SD pattern are in an activated state, and the most recently activated SD pattern among the multiple activated SD patterns is determined as the first SD pattern.

[0297] In some embodiments, the processing module is used for downlink transmission of type AFTM, and determines a first SD pattern from at least one SD pattern according to a first indication signaling sent by a network device.

[0298] 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; control unit MAC CE.

[0299] 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 report configuration CSI report config; an identifier of a subconfig in the CSI report config.

[0300] In some embodiments, the processing module is further configured to determine the type of downlink transmission in an explicit manner or an implicit manner.

[0301] In some embodiments, the processing module is configured to determine the type of downlink transmission according to the second indication signaling sent by the network device.

[0302] In some embodiments, the processing module is configured to determine the type of downlink transmission according to the number of ports of the downlink information sent by the network device.

[0303] In some embodiments, the processing module is configured to determine that the type of downlink transmission is AFTM if the first port number of the downlink information most recently sent by the network device is less than the second port number of the downlink information sent by the network device before the most recently sent downlink information.

[0304] It should be noted that the modules included in the signal receiving device are not limited to the above modules, and may also include, for example, a storage module, etc. This disclosure does not limit this.

[0305] FIG9 is a schematic block diagram of a signal sending device according to an embodiment of the present disclosure. As shown in FIG9 , the signal sending device includes: a processing module 901 and a transceiver module 902 .

[0306] In some embodiments, the processing module is used to determine a first SD pattern within at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to the type of downlink transmission; the transceiver module is used to send CSI-RS according to the first SD pattern.

[0307] In some embodiments, the type of downlink transmission includes at least one of the following: measuring first and then adjusting MFTA; adjusting first and then measuring AFTM.

[0308] 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.

[0309] In some embodiments, the processing module is of AFTM type for downlink transmission, multiple SD patterns in at least one SD pattern are in an activated state, and the most recently activated SD pattern among the multiple activated SD patterns is determined as the first SD pattern.

[0310] In some embodiments, the transceiver module is also used 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.

[0311] 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; control unit MAC CE.

[0312] 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 report configuration CSI report config; an identifier of a subconfig in the CSI report config.

[0313] It should be noted that the modules included in the signal sending device are not limited to the above modules, and may also include, for example, a storage module, etc. This disclosure does not limit this.

[0314] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can be referred to the partial description of the method embodiment. The device embodiment described above is merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art can understand and implement it without paying any creative work.

[0315] An embodiment of the present disclosure also proposes a terminal, comprising: one or more processors; a memory coupled to the one or more processors, wherein the memory stores executable instructions, and when the executable instructions are executed by the one or more processors, the terminal executes the signal receiving method described in any one of the first aspect and the optional embodiments of the first aspect.

[0316] An embodiment of the present disclosure also proposes a network device, comprising: one or more processors; a memory coupled to the one or more processors, wherein the memory stores executable instructions, and when the executable instructions are executed by the one or more processors, the network device executes the signal sending method described in any one of the optional embodiments of the second aspect and the second aspect.

[0317] An embodiment of the present disclosure also proposes a signal receiving and sending method, including: a network device determines a first SD pattern within at least one spatial adjustment standard SD pattern associated with a channel state information reference signal CSI-RS resource according to a type of downlink transmission; the network device sends a CSI-RS to a terminal according to the first SD pattern; the terminal determines a first SD pattern within at least one SD pattern associated with the CSI-RS resource according to the type of downlink transmission; and the terminal receives the CSI-RS sent by the network device according to the first SD pattern.

[0318] An embodiment of the present disclosure also proposes a communication system, including a terminal and a network device, wherein the terminal is configured to implement the signal sending method described in any one of the first aspect, the optional embodiment of the first aspect, the second aspect, and the optional embodiment of the second aspect.

[0319] An embodiment of the present disclosure also proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes a signal sending method as described in any one of the first aspect, the optional embodiment of the first aspect, the second aspect, and the optional embodiment of the second aspect.

[0320] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0321] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0322] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0323] Figure 10 is a schematic diagram of the structure of a communication device 10100 proposed in an embodiment of the present disclosure. Communication device 10100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user device, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 10100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0324] As shown in Figure 10, the communication device 10100 includes one or more processors 10101. The processor 10101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 10101 is used to call instructions to enable the communication device 10100 to execute any of the above methods.

[0325] In some embodiments, the communication device 10100 further includes one or more memories 10102 for storing instructions. Optionally, all or part of the memory 10102 may be located outside the communication device 10100.

[0326] 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 transceiver 10103, and the other steps are performed by the processor 10101.

[0327] 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, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0328] Optionally, the communication device 10100 further includes one or more interface circuits 10104, which are connected to the memory 10102. The interface circuits 10104 may be configured to receive signals from the memory 10102 or other devices, and may be configured to send signals to the memory 10102 or other devices. For example, the interface circuits 10104 may read instructions stored in the memory 10102 and send the instructions to the processor 10101.

[0329] 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 the present disclosure is not limited thereto, and the structure of the communication device 10100 may not be limited by FIG. 10 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0330] FIG11 is a schematic diagram of the structure of a chip 11200 according to an embodiment of the present disclosure. If the communication device 10100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 11200 shown in FIG11 , but the present disclosure is not limited thereto.

[0331] The chip 11200 includes one or more processors 11201 , and the processor 11201 is used to call instructions so that the chip 11200 executes any of the above methods.

[0332] In some embodiments, the chip 11200 further includes one or more interface circuits 11202, which are connected to the memory 11203. The interface circuit 11202 can be used to receive signals from the memory 11203 or other devices, and can be used to send signals to the memory.

[0333] 11203 or other devices to send signals. For example, the interface circuit 11202 can read the instructions stored in the memory 11203 and send the instructions to the processor 11201. Optionally, the terms interface circuit, interface, transceiver pin, transceiver, etc. can be used interchangeably.

[0334] In some embodiments, the chip 11200 further includes one or more memories 11203 for storing instructions. Alternatively, all or part of the memories 11203 may be located outside the chip 11200.

[0335] The present disclosure also provides a storage medium having instructions stored thereon. When the instructions are executed on the communication device 10100, the communication device 10100 is caused to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0336] The present disclosure also provides a program product, which, when executed by the communication device 10100, enables the communication device 10100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0337] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A signal receiving method, characterized in that: Executed by a terminal, the method includes: Determining, according to the type of downlink transmission, a first SD pattern in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource; Receive CSI-RS according to the first SD pattern.

2. The method according to claim 1, characterized in that The type of downlink transmission includes at least one of the following: Measure first and adjust the MFTA later; Adjust first and then measure AFTM.

3. The method according to claim 1 or 2, characterized in that: The type of downlink transmission is AFTM, and the terminal does not expect that the channel state information configuration CSI repot config is different from the SD pattern activated by the CSI-RS resource.

4. The method according to any one of claims 1 to 3, characterized in that The determining, according to the type of downlink transmission, a first SD pattern in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource includes: The type of the downlink transmission is AFTM, multiple SD patterns in the at least one SD pattern are in an activated state, and the most recently activated SD pattern in the multiple activated SD patterns is determined to be the first SD pattern.

5. The method according to any one of claims 1 to 3, characterized in that The determining, according to the type of downlink transmission, a first SD pattern in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource includes: The type of downlink transmission is AFTM, and the first SD pattern is determined in the at least one SD pattern according to a first indication signaling sent by a network device.

6. The method according to claim 5, characterized in that The first indication signaling includes at least one of the following: Cell-specific signaling; Radio resource control signaling; Downlink control information DCI; Control unit MAC CE.

7. The method according to claim 5 or 6, characterized in that: The first indication signaling is used to indicate at least one of the following: Identification of CSI-RS resources; The identification of SD pattern; The identifier of the channel state information report configuration CSI report config; The identifier of the subconfig in the CSI report config.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The type of downlink transmission is determined based on explicit or implicit methods.

9. The method according to claim 8, characterized in that The determining the type of downlink transmission in an explicit manner includes: The type of the downlink transmission is determined according to the second indication signaling sent by the network device.

10. The method according to claim 8, characterized in that The determining the type of downlink transmission in an implicit manner includes: The type of the downlink transmission is determined according to the number of ports of the downlink information sent by the network device.

11. The method according to claim 10, characterized in that The determining the type of the downlink transmission according to the number of ports of the downlink information sent by the network device includes: The first port number of the downlink information sent by the network device most recently is less than the first port number of the downlink information sent by the network device most recently. The type of the downlink transmission is determined to be AFTM based on the second port number of the downlink information sent the last time before the downlink information is sent the next time.

12. A signal sending method, characterized in that: Executed by a network device, the method includes: Determining, according to the type of downlink transmission, a first SD pattern in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource; The CSI-RS is sent according to the first SD pattern.

13. The method according to claim 12, characterized in that The type of downlink transmission includes at least one of the following: Measure first and then adjust the MFTA; Adjust first and then measure AFTM.

14. The method according to claim 12 or 13, characterized in that The type of the downlink transmission is AFTM, and the channel state information configuration CSI repot config activates an SD pattern for the CSI-RS resource.

15. The method according to any one of claims 12 to 14, characterized in that The determining, according to the type of downlink transmission, a first SD pattern in at least one spatial adjustment SD pattern associated with a channel state information reference signal CSI-RS resource includes: The type of the downlink transmission is AFTM, multiple SD patterns in the at least one SD pattern are in an activated state, and the most recently activated SD pattern in the multiple activated SD patterns is determined to be the first SD pattern.

16. The method according to any one of claims 12 to 15, characterized in that The method further comprises: The type of downlink transmission 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 among the at least one SD pattern, and the first SD pattern is used by the network device to send CSI-RS.

17. The method according to claim 16, characterized in that The first indication signaling includes at least one of the following: Cell-specific signaling; Radio resource control signaling; Downlink control information DCI; Control unit MAC CE.

18. The method according to claim 16 or 17, characterized in that The first indication signaling is used to indicate at least one of the following: Identification of CSI-RS resources; The identification of SD pattern; The identifier of the channel state information report configuration CSI report config; Identifier of subconfig in CSI report config.

19. A signal transceiving method, characterized in that: include: The network device determines, according to the type of downlink transmission, a first SD pattern in at least one spatial adjustment pattern SD pattern associated with a channel state information reference signal CSI-RS resource; The network device sends a CSI-RS to the terminal according to the first SD pattern; The terminal determines, according to a type of downlink transmission, a first SD pattern in at least one SD pattern associated with a CSI-RS resource; The terminal receives the CSI-RS sent by the network device according to the first SD pattern.

20. A signal receiving device, characterized in that: The device comprises: A processing module, configured to determine a first SD pattern in at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to a type of downlink transmission; A transceiver module is used to receive CSI-RS according to the first SD pattern.

21. A signal sending device, characterized in that: The device comprises: A processing module, configured to determine a first SD pattern in at least one spatial adjustment format SD pattern associated with a channel state information reference signal CSI-RS resource according to a type of downlink transmission; A transceiver module is used to send CSI-RS according to the first SD pattern.

22. A terminal, characterized in that: include: one or more processors; A memory coupled to the one or more processors, wherein executable instructions are stored in the memory, and when the executable instructions are executed by the one or more processors, the terminal executes the signal receiving method according to any one of claims 1 to 11.

23. A network device, characterized in that: include: one or more processors; A memory coupled to the one or more processors, wherein executable instructions are stored in the memory, and when the executable instructions are executed by the one or more processors, the network device executes the signal sending method according to any one of claims 12 to 18.

24. A communication system, characterized in that: It comprises 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 11, and the network device is configured to implement the signal sending method according to any one of claims 12 to 18.

25. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device executes the signal receiving method according to any one of claims 1 to 11, and / or the signal sending method according to any one of claims 12 to 18.

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