Communication method, terminal, network device, system and storage medium

Abstract

The invention relates to a communication method, a terminal, network equipment, a system and a storage medium. The method comprises: receiving codebook parameters sent by a network device, grouping processing objects, generating K groups of processing objects, K being a positive integer, generating indication information according to the K groups of processing objects and the codebook parameters, and sending the indication information to the network device. Therefore, the candidate processing objects are subjected to grouping indication, the memory of the terminal is not increased while the indication overhead of the processing object selected by the terminal is ensured to be unchanged or less, indication reporting of the processing object selected by the terminal is realized, and larger antenna port transmission is supported.

Description

Communication method, terminal, network device, system and storage medium Technical Field

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

[0002] To improve the spectral efficiency and coverage of the communication system, the number of supported transmit antenna ports can be expanded from 32 to a maximum of 128. With a larger number of transmit antenna ports, the Rel-16 eType II codebook, Rel-17 Type II port selection, and Rel-18 Type II Doppler codebook can be used to implement CSI (Channel Status Information) feedback. In related technologies, the maximum number of CSI-RS ports for a single CSI-RS (Channel State Information-Reference Signal) resource is 32. To support 128 antenna ports, the base station needs to configure multiple CSI-RS resources for the terminal, and each CSI-RS resource must have the same number of ports.

[0003] Summary of the Invention

[0004] In order to overcome the technical problem of large overhead in reporting indications of spatial basis vectors in related technologies, the present disclosure provides a communication method, terminal, network device, system and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a terminal. The method includes:

[0006] Receiving codebook parameters sent by a network device;

[0007] Grouping the processing objects to generate K groups of processing objects, where K is a positive integer;

[0008] Generate indication information according to the K groups of processing objects and the codebook parameters and send it to the network device, where the indication information is used to indicate a first processing object selected by the terminal.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a network device. The method includes:

[0010] Sending a codebook parameter to the terminal, where the codebook parameter is used to instruct the terminal to group processing objects according to the codebook parameter to generate K groups of processing objects, where K is a positive integer;

[0011] Indication information sent by the terminal is received, where the indication information is used to indicate a first processing object selected by the terminal, and the indication information is generated by the terminal according to the K groups of processing objects and the codebook parameters.

[0012] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0013] a transceiver module configured to receive codebook parameters sent by a network device;

[0014] a processing module configured to group processing objects to generate K groups of processing objects, where K is a positive integer;

[0015] The transceiver module is configured to generate indication information according to the K groups of processing objects and the codebook parameters and send it to the network device, where the indication information is used to indicate the first processing object selected by the terminal.

[0016] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0017] a transceiver module configured to send a codebook parameter to a terminal, wherein the codebook parameter is used to instruct the terminal to group processing objects to generate K groups of processing objects, where K is a positive integer;

[0018] The transceiver module is configured to receive indication information sent by the terminal, where the indication information is used to indicate a first processing object selected by the terminal, and the indication information is generated by the terminal according to the K groups of processing objects and the codebook parameters.

[0019] According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0020] one or more processors;

[0021] The processor is configured to execute the communication method described in any one of the first aspects of the present disclosure.

[0022] According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0023] one or more processors;

[0024] The processor is configured to execute the communication method described in any one of the second aspects of the version disclosure.

[0025] According to the seventh 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 communication method described in any one of the first aspects of the present disclosure, and the network device is configured to implement the communication method described in any one of the second aspects of the present disclosure.

[0026] According to an eighth 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 a communication method as described in any one of the first aspects of the present disclosure, or the communication device executes a communication method as described in any one of the second aspects of the present disclosure.

[0027] According to a ninth aspect of an embodiment of the present disclosure, a computer program product is proposed, comprising a computer program and / or instructions, characterized in that when the computer program and / or instructions are executed by a communication device, they implement the communication method described in any one of the first aspects of the present disclosure, or when the computer program and / or instructions are executed by a communication device, they implement the communication method described in any one of the second aspects of the present disclosure.

[0028] In the above solution, codebook parameters sent by a network device are received, and processing objects are grouped to generate K groups of processing objects, where K is a positive integer. Based on the K groups of processing objects and the codebook parameters, indication information is generated and sent to the network device. The indication information indicates the first processing object selected by the terminal. This grouping of candidate processing objects ensures that the indication overhead of the terminal's selected processing object remains constant or is reduced, while not increasing the terminal's memory. This enables reporting of the terminal's selected processing object indication to support transmission on larger antenna ports. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0030] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0031] FIG2A is a schematic diagram of an interaction flow of a communication method according to an embodiment of the present disclosure.

[0032] FIG2B is a schematic diagram of an interaction flow of a communication method according to an embodiment of the present disclosure.

[0033] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure.

[0034] FIG4 is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0035] FIG5 is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0036] FIG6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.

[0037] FIG7 is a schematic diagram of the structure of a network device proposed according to an embodiment of the present disclosure.

[0038] FIG8 is a schematic structural diagram of a communication device 8100 according to an embodiment of the present disclosure.

[0039] FIG9 is a schematic structural diagram of a chip 8200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] The embodiments of the present disclosure provide a communication method, a terminal, a network device, a system, and a storage medium.

[0041] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a terminal. The method includes:

[0042] Receiving codebook parameters sent by a network device;

[0043] Grouping the processing objects to generate K groups of processing objects, where K is a positive integer;

[0044] Generate indication information according to the K groups of processing objects and the codebook parameters and send it to the network device, where the indication information is used to indicate a first processing object selected by the terminal.

[0045] In combination with some embodiments of the first aspect, the processing object includes a spatial basis vector, and the first processing object includes a first spatial basis vector.

[0046] In combination with some embodiments of the first aspect, the processing object includes a port, and the first processing object includes a first port.

[0047] In combination with some embodiments of the first aspect, the indication information includes first bit information, where the first bit information is used to indicate a first orthogonal spatial basis vector group, and the first orthogonal spatial basis vector group includes the first spatial basis vector.

[0048] In combination with some embodiments of the first aspect, the indication information includes second information, and the second information is used to indicate the first processing object.

[0049] In combination with some embodiments of the first aspect, the indication information includes first information, and the first information is used to indicate quantity information of the first processing object.

[0050] In combination with some embodiments of the first aspect, the first information includes second bit information, and the second bit information is used to indicate the number of the first spatial basis vectors, and the number of bits of the second bit information is or Wherein, L is the quantity information of the first spatial basis vectors, and L″ represents the number of combinations of the number of optional spatial basis vectors in each group in K groups.

[0051] In combination with some embodiments of the first aspect, the first information includes third bit information, the third bit information is used to indicate the quantity information of the first port, and the number of bits of the third bit information is or Wherein, L' is the number of combinations of the number of optional ports in each group of K groups, and P i is the number of ports in the i-th group of ports, the i-th group of ports is any of the K groups of ports, and i is a positive integer less than or equal to K.

[0052] In combination with some embodiments of the first aspect, the second information includes fourth bit information, the fourth bit information is used to indicate the first processing object, and the number of bits of the fourth bit information is Among them, the L i is the quantity information of the first processing objects in the i-th group of processing objects, the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0053] In combination with some embodiments of the first aspect, the first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports the channel state information CSI through the first part of information and the second part of information.

[0054] In combination with some embodiments of the first aspect, the first information and the second information are both carried by the second part of information, and the terminal reports CSI through the first part of information and the second part of information.

[0055] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a network device. The method includes:

[0056] Sending a codebook parameter to the terminal, where the codebook parameter is used to instruct the terminal to group processing objects according to the codebook parameter to generate K groups of processing objects, where K is a positive integer;

[0057] Indication information sent by the terminal is received, where the indication information is used to indicate a first processing object selected by the terminal, and the indication information is generated by the terminal according to the K groups of processing objects and the codebook parameters.

[0058] In combination with some embodiments of the second aspect, the processing object includes a spatial basis vector, and the first processing object includes a first spatial basis vector.

[0059] In combination with some embodiments of the second aspect, the processing object includes a port, and the first processing object includes a first port.

[0060] In combination with some embodiments of the second aspect, the processing object includes second information, and the second information is used to indicate the first processing object.

[0061] In combination with some embodiments of the second aspect, the processing object includes first information, and the first information is used to indicate quantity information of the first processing object.

[0062] In combination with some embodiments of the second aspect, the first information includes second bit information, and the second bit information is used to indicate the number of the first spatial basis vectors, and the number of bits of the second bit information is or Wherein, L is the quantity information of the first spatial basis vectors, and L″ represents the number of combinations of the number of optional spatial basis vectors in each group in K groups.

[0063] In combination with some embodiments of the second aspect, the first information includes third bit information, the third bit information is used to indicate the quantity information of the first port, and the number of bits of the third bit information is or Wherein, L' is the number of combinations of the number of optional ports in each group of K groups, and P i is the number of ports in the i-th group of ports, the i-th group of ports is any of the K groups of ports, and i is a positive integer less than or equal to K.

[0064] In combination with some embodiments of the second aspect, the second information includes fourth bit information, the fourth bit information is used to indicate the first processing object, and the number of bits of the fourth bit information is Among them, the L i is the quantity information of the first processing objects in the i-th group of processing objects, the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0065] In combination with some embodiments of the second aspect, the first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports CSI through the first part of information and the second part of information.

[0066] In combination with some embodiments of the second aspect, the first information and the second information are both carried by the second part of information, and the terminal reports CSI through the first part of information and the second part of information.

[0067] In conjunction with some embodiments of the second aspect, the codebook parameter includes at least one of the following:

[0068] The number of ports in the first dimension and the number of ports in the second dimension;

[0069] quantity information of the first spatial basis vectors;

[0070] The number of ports corresponding to the channel state information reference signal CSI-RS;

[0071] Port parameter information, where the port parameter information is used to instruct the terminal to determine the port number of the first port according to the port parameter information.

[0072] In combination with some embodiments of the second aspect, the codebook parameter includes first quantity information, and the first quantity information is used to determine the number of the first processing objects in the i-th group of processing objects, the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0073] In combination with some embodiments of the second aspect, the number of ports is the total number of ports of one or more CSI-RS resources, and the number of ports of each CSI-RS resource is equal.

[0074] In conjunction with some embodiments of the second aspect, the method further includes:

[0075] The first processing object is determined according to the indication information, where the first processing object is used to perform precoding calculation for downlink data transmission.

[0076] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0077] a transceiver module configured to receive codebook parameters sent by a network device;

[0078] a processing module configured to group processing objects to generate K groups of processing objects, where K is a positive integer;

[0079] The transceiver module is configured to generate indication information according to the K groups of processing objects and the codebook parameters and send it to the network device, where the indication information is used to indicate the first processing object selected by the terminal.

[0080] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0081] a transceiver module configured to send a codebook parameter to a terminal, wherein the codebook parameter is used to instruct the terminal to group processing objects according to the codebook parameter to generate K groups of processing objects, where K is a positive integer;

[0082] The transceiver module is configured to receive indication information sent by the terminal, where the indication information is used to indicate a first processing object selected by the terminal, and the indication information is generated by the terminal according to the K groups of processing objects and the codebook parameters.

[0083] In a fifth aspect, an embodiment of the present disclosure provides a communication device, including:

[0084] one or more processors;

[0085] The processor is configured to execute the communication method described in any one of the first aspects of the present disclosure.

[0086] In a sixth aspect, an embodiment of the present disclosure provides a communication device, including:

[0087] one or more processors;

[0088] The processor is used to execute the communication method described in any one of the second aspects of this disclosure.

[0089] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of the first aspects of the present disclosure, and the network device is configured to implement the communication method described in any one of the second aspects of the present disclosure.

[0090] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes a communication method as described in any one of the first aspects of the present disclosure, or the communication device executes a communication method as described in any one of the second aspects of the present disclosure.

[0091] In the ninth aspect, an embodiment of the present disclosure proposes a computer program product, comprising a computer program and / or instructions, which, when executed by a communication device, implement the communication method as described in any one of the first aspects of the present disclosure, or implement the communication method as described in any one of the second aspects of the present disclosure when the computer program and / or instructions are executed by a communication device.

[0092] Through the above method, codebook parameters sent by a network device are received, and processing objects are grouped to generate K groups of processing objects, where K is a positive integer. Based on the K groups of processing objects and the codebook parameters, indication information is generated and sent to the network device. The indication information is used to indicate the first processing object selected by the terminal. This grouping of candidate processing objects ensures that the indication overhead of the terminal's selected processing object remains unchanged or is reduced, while not increasing the terminal's memory. This enables reporting of the terminal's selected processing object indication when supporting transmission on larger antenna ports.

[0093] It is understandable that the above-mentioned terminal, access network device, first network element, second network element, core network device, communication system, storage medium, program product, computer program, chip or chip system 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.

[0094] The present disclosure provides a communication method, terminal, network device, system, and storage medium. In some embodiments, the terms communication method and information processing method are interchangeable, the terms communication device and information processing device are interchangeable, and the terms information processing system and communication system are interchangeable.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0099] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0100] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0101] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0102] 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.

[0103] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0104] 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.

[0105] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0115] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0116] 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.

[0117] FIG1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0118] 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.

[0119] In some embodiments, the network device 102 is, for example, a node or device that accesses the terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0120] 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.

[0121] In some embodiments, the 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.

[0122] 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.

[0123] 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.

[0124] 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).

[0125] In some embodiments, for the CSI feedback of the Rel-16 eType II codebook and the Rel-18 Type II Doppler codebook, in one polarization direction, the total number of candidate spatial basis vectors (SD basis vectors) is O1O2N1N2, and the O1O2N1N2 candidate SD basis vectors can be divided into O1O2 orthogonal candidate SD basis vector groups, each group containing N1N ２ Candidate SD basis vectors. UE (User Equipment) reports Indicates the L different SD basis vectors selected by the UE in a single polarization direction. The SD basis vector can be used for channel state information feedback, beamforming and beam tracking, multi-antenna transmission and reception configuration, and network optimization. ２ Indicates the value of the port corresponding to the CSI-RS (Channel Status Information-Reference Signal) resource in a single polarization direction. １ The maximum value of N2 is 16, Indicates the number of combinations, log2O1O ２ Used to indicate the orthogonal group corresponding to the spatial basis vector selected by the UE. For example, It can also be used to indicate the offset of the horizontal dimension and the vertical dimension after sampling of the spatial basis vector. represents the L SD basis vectors selected from the candidate spatial basis vector group. The L SD basis vectors selected in the two polarization directions are the same.

[0126] In some embodiments, for Rel-17 Type II port selection codebook, the UE selects Indicates the L different ports selected in a single polarization direction, where the L SD basis vectors selected for the two polarization directions are the same.

[0127] In some embodiments, the codebook-based CSI indication reporting includes two parts of reporting: Part-1 (first part) and Part-2 (second part), wherein the indication information of the spatial basis vector or port selected by the UE is reported in Part-2.

[0128] In some embodiments, for Rel-16 eType II or Rel-18 Type II Doppler codebooks, the results of calculation based on the number of combinations in the related art are given in a tabular form, as shown in Table 1A:

[0129] As shown in Table 1A above, in any combination number C(N1, N2), N1=0-15, N2=1-4, where the above table needs to be saved in the UE memory, the UE can determine the SD basis vector selected by the UE based on Table 1A above through the algorithm described in the relevant protocol.

[0130] In some embodiments, for the Rel-17 Type II PS (Port Selection) codebook, since a larger number of ports needs to be selected, Table 1B is additionally configured in the standard to determine the value of the combination number C(N1, N2). As shown in Table 1B:

[0131] As shown in Table 1B, it is used to indicate the corresponding relationship between N1N2 and the combination coefficient C(N1, N2) in the Rel-17 Type II PS codebook.

[0132] In some embodiments, when the number of CSI-RS ports supported by the communication system reaches 128, the UE needs to use more memory to store the values ​​corresponding to the above-mentioned combination coefficients, resulting in an increase in the UE's memory. Therefore, in this embodiment, by dividing the total candidate spatial basis vectors into multiple groups, and then indicating the spatial basis vectors selected by the UE in each group, respectively, this achieves the reporting of the indication of the spatial basis vectors selected by the UE when supporting larger transmit antenna ports while ensuring low feedback overhead and without increasing the UE's memory.

[0133] FIG2A is a schematic diagram of an interaction process of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0134] Step S2101: The network device sends codebook parameters to the terminal.

[0135] In some embodiments, the terminal encodes the indication information to be reported based on codebook parameters, generates a codebook, and sends it to the network device. For example, to improve transmission efficiency and reduce overhead during signal transmission, the communication system uses encoding to transmit relevant information, where the codebook parameters can be used for beamforming, antenna (port) selection, MIMO (Multiple-Input Multiple-Output) system transmission, and channel estimation.

[0136] In some embodiments, the name of the codebook parameter is not limited, and may be, for example, "codebook data", "codebook configuration", "codebook information", "configuration information", etc.

[0137] Optionally, in some embodiments, the codebook parameter includes at least one of the following:

[0138] The number of ports in the first dimension and the number of ports in the second dimension;

[0139] The quantity information of the first spatial basis vector;

[0140] The number of ports corresponding to the channel state information reference signal CSI-RS;

[0141] The port parameter information is used to instruct the terminal to determine the port number of the first port according to the port parameter information.

[0142] For example, the first spatial basis vector is the terminal selecting multiple candidate spatial basis vectors based on the current network environment to determine the spatial basis vector to be reported, and the first port is the terminal selecting multiple candidate ports based on the current network environment to determine the port to be reported. The number of ports N1 in the first dimension and the number of ports N2 in the second dimension are used to determine the total number of candidate spatial basis vectors in the terminal, or the total number of candidate ports in the terminal. The number information L of the first spatial basis vector is: the total number of first spatial basis vectors that the network device indicates the terminal can choose to report. The number of ports P corresponding to the CSI-RS CSI-RS The network device indicates the number of ports corresponding to the CSI-RS resources under the current codebook type. The terminal can determine the number of ports of the selected first port according to the port parameter information α.

[0143] For example, N1 and N2 or P CSI-RS Can be used to determine the P tot The value of P tot is the total number of candidate spatial basis vectors, or the total number of candidate ports, for example, P tot =N1N2, or And α and P CSI-RS It can be used to determine the port number L of the first port, for example,

[0144] Optionally, in some embodiments, the codebook parameters further include first quantity information, and the first quantity information is used to determine the number of first processing objects in the i-th group of processing objects, where the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0145] For example, in this embodiment, after the network device sends the codebook parameters, the terminal groups the current candidate spatial basis vectors or the current candidate ports into K groups of candidate spatial basis vectors or K groups of candidate ports. The number of spatial basis vectors in the i-th group of spatial basis vectors can be indicated by the network device through first quantity information, or the number of candidate ports in the i-th group of candidate ports can be indicated by the network device through first quantity information. The i-th group of spatial basis vectors is any group of candidate spatial basis vectors in the K groups of candidate spatial basis vectors, and the i-th group of candidate ports is any group of candidate ports in the K groups of candidate ports. i is a positive integer less than or equal to K.

[0146] Optionally, in some embodiments, the number of ports is the total number of ports of one or more CSI-RS resources, and the number of ports of each CSI-RS resource is equal.

[0147] For example, during the communication transmission process, the network device needs to configure one or more CSI-RS resources for the terminal for CSI transmission, and configure the total number of ports of one or more CSI-RS resources through codebook parameters, and the number of ports of each CSI-RS resource is equal, so that the terminal determines the number of ports corresponding to each CSI-RS resource for subsequent CSI feedback.

[0148] In step S2102, the terminal groups the spatial basis vectors to generate K groups of spatial basis vectors, where K is a positive integer.

[0149] For example, in this embodiment, the total number of candidate spatial basis vectors included in the nth orthogonal spatial basis vector group is P tot , the terminal randomly divides all candidate spatial basis vectors in each orthogonal spatial basis vector group into K groups of spatial basis vectors, and the terminal selects the spatial basis vectors that need to be indicated and reported from the K groups of spatial basis vectors. Among them, K is a positive integer, and the number of candidate spatial basis vectors in each group of spatial basis vectors is P i , i is a positive integer less than or equal to K, and P in each group of spatial basis vectors i Can be the same or different.

[0150] For example, spatial basis vectors are a set of vectors in physical space, typically used to describe signal transmission and reception in a multi-antenna (port) system. In a multi-antenna (port) system, each antenna processes and handles the transmitted and received signals, and the signals processed by these antennas can be described by a set of spatial basis vectors. For example, spatial basis vectors can be used to represent signal transmission at different locations and directions in the system. In a communication system, by selecting appropriate spatial basis vectors, beamforming and spatial multiplexing can be achieved, thereby improving the reliability and capacity of signal transmission. In a MIMO system (multiple-input, multiple-output system), spatial basis vectors are the basis vectors that represent the spatial correlation between different antennas. These basis vectors can help system personnel perform channel modeling, beamforming design, and multi-user interference cancellation. In this embodiment, the terminal can encode the selected spatial basis vectors based on the codebook parameters sent by the network device, generate indication information, and then send it to the network device. The spatial basis vectors can be used by the network device to perform precoding calculations for downlink data transmission.

[0151] For example, in this embodiment, the candidate spatial basis vectors in the orthogonal spatial basis vector group in the terminal are grouped to facilitate the subsequent separate indication of the spatial basis vectors selected in each group of spatial basis vectors. For multi-port coding transmission, the terminal can reuse the stored combination coefficients for spatial basis vector indication, thereby avoiding the terminal adding new storage space to store the extended combination coefficients. While ensuring less feedback overhead, the spatial basis vectors of the terminal in the grouped candidate spatial basis vector group are indicated and reported.

[0152] In step S2103, the terminal generates indication information according to the K groups of spatial basis vectors and codebook parameters and sends the information to the network device.

[0153] In some embodiments, the indication information is used to indicate the first spatial basis vector selected by the terminal.

[0154] In some embodiments, the name of the indication information is not limited, and it can be, for example, "coding bit information", "coding indication information", "spatial basis vector indication information", "spatial basis vector information", etc.

[0155] For example, the terminal generates K groups of spatial basis vectors based on the above grouping, analyzes the current network environment, selects the first spatial basis vector that needs to be indicated and reported from the K groups of spatial basis vectors, and then uses the codebook parameters as a reference to encode the first spatial basis vector for the indication report, generates indication information, and indicates the spatial basis vector selected by the terminal to the network device through the indication information.

[0156] In some embodiments, the indication information includes first bit information, where the first bit information is used to indicate a first orthogonal spatial basis vector group.

[0157] In some embodiments, the number of bits of the first bit information is Wherein, O1 and O2 are the orthogonal groups corresponding to the first orthogonal spatial basis vector group. For example, in this embodiment, the aforementioned spatial basis vectors are spatial basis vectors in the first orthogonal spatial basis vector group. The terminal groups all candidate spatial basis vectors in the first orthogonal spatial basis vector group to generate K groups of spatial basis vectors. The terminal then selects a spatial basis vector from the K groups of spatial basis vectors based on the current network environment to determine the first spatial basis vector. Therefore, the first spatial basis vector is a spatial basis vector in the first orthogonal spatial basis vector group.

[0158] Optionally, in some embodiments, the first orthogonal spatial basis vector group is a spatial basis vector group in a single polarization direction. For example, a single polarization direction refers to the direction in which the electric field or magnetic field oscillates during the propagation of electromagnetic waves. In wireless communications and antenna port communications, polarization is generally used to describe the mode and characteristics of electromagnetic wave propagation. Common polarization directions include horizontal polarization, vertical polarization, and circular polarization. In horizontal polarization, the electric field oscillation is parallel to the ground, while in vertical polarization, the electric field oscillation is perpendicular to the ground. Circular polarization includes right-hand circular polarization and left-hand circular polarization, in which the horizontal and vertical components (orthogonal components) of the electric field oscillate with the same amplitude and phase. A single polarization direction refers to a specific polarization direction among the above polarization directions. In wireless communication scenarios, a specific polarization direction is used for a specific antenna or communication system to meet signal transmission requirements. Selecting a specific polarization direction can help reduce multipath interference, improve signal quality, and enhance the performance of the communication system. In this embodiment, the spatial basis vector groups in a single polarization direction are grouped, and the orthogonal spatial basis vectors in the single polarization direction selected by the terminal are indicated and reported.

[0159] In some embodiments, the indication information includes second information, where the second information is used to indicate the first spatial basis vector.

[0160] For example, in this embodiment, the indication information includes second information, which can indicate all first spatial basis vectors selected by the terminal in each group of spatial basis vectors, and can also be used to indicate the first spatial basis vectors selected by the terminal in each group of spatial basis vectors.

[0161] Optionally, in some embodiments, the second information includes fourth bit information.

[0162] In some embodiments, the fourth bit information is used to indicate the first spatial basis vector, and the number of bits of the fourth bit information is Among them, L iis the number information of the first spatial basis vector in the i-th group of spatial basis vectors, P i is the total number of spatial basis vectors in the i-th group of spatial basis vectors. The i-th group of spatial basis vectors is any K group of spatial basis vectors.

[0163] Optionally, in some embodiments, the K groups of spatial basis vectors are orthogonal spatial basis vectors in a single polarization direction. Therefore, the fourth bit of information is used to indicate the first orthogonal spatial basis vector in a single polarization direction.

[0164] Optionally, in some embodiments, the indication information further includes first information, where the first information is used to indicate quantity information of the first spatial basis vectors.

[0165] For example, the first spatial basis vector selected by the terminal is indicated by indication information, wherein the first information is used to indicate the total number of first spatial basis vectors selected by the terminal from K groups of spatial basis vectors, and the second information is used to indicate each spatial basis vector selected by the terminal from the i-th group of spatial basis vectors.

[0166] For example, when the terminal indicates the first spatial basis vector selected by each group, after determining the number of first spatial basis vectors in other groups, the number of first spatial basis vectors in the Kth group of spatial basis vectors can be obtained by: Therefore, when the terminal indicates and reports the K groups of selected first spatial basis vectors, it can only report the second information to indicate the first spatial basis vectors selected in the K-th group of spatial basis vectors, without reporting the first information to indicate the number of first spatial basis vectors in the K-th group of spatial basis vectors. That is, in the process of indicating and reporting through indication information, the first information does not exist in some indication information, and only the second information in the indication information needs to be used to report the first spatial basis vectors selected by the terminal.

[0167] In some embodiments, the first information includes second bit information, and the second bit information is used to indicate the number information of the first spatial basis vectors.

[0168] In some embodiments, the number of bits of the second bit information is: or Wherein L is the number information of the first spatial basis vectors configured by the network device, and L″ represents the number of combinations of the number of optional spatial basis vectors in each group in K groups. For example, the number information of the first spatial basis vectors configured by the network is L=4, the spatial basis vectors in the terminal are divided into 2 groups, and the combinations of the number of optional first spatial basis vectors in each group of spatial basis vectors are: {0,4}, {1,3}, {2,2}, {3,1}, {4,0}, then the number of combinations L″=5.

[0169] Optionally, in some embodiments, the second bit information is used to indicate the number information of the first orthogonal spatial basis vectors in a single polarization direction. Therefore, or Used to indicate the number of first orthogonal spatial basis vectors in a single polarization direction.

[0170] In some embodiments, the first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports the channel state information CSI through the first part of information and the second part of information.

[0171] For example, the CSI reporting in the terminal is performed using two parts: a first part of information (Part 1) and a second part of information (Part 2). The first information is reported by carrying the first part of information, and the second information is reported by carrying the second part of information.

[0172] Optionally, in some embodiments, both the first information and the second information are carried by the second part of information, and the terminal reports CSI by using the first part of information and the second part of information.

[0173] For example, the CSI reporting in the terminal is performed using two parts, namely, the first part of information (Part 1) and the second part of information (Part 2). The first information and the second information in this embodiment are reported by carrying the second part of information.

[0174] Step S2104: The network device determines the first spatial basis vector according to the instruction information.

[0175] For example, the network device decodes the indication information based on the codebook parameters according to the indication information, thereby determining the first spatial basis vector selected by the terminal.

[0176] In some embodiments, the first spatial basis vector is used to perform precoding calculation for downlink data transmission.

[0177] For example, the network device is configured with codebook parameters N1=8, N2=4, and L=4, and the codebook type is Rel-16 eType II codebook or Rel-18 Type II Doppler codebook. The UE indicates the selected spatial basis vector to the network device, and the corresponding P tot =N1N2=32. Using the two-part indication method in the above embodiment, first tot =N1N2=32 is divided into two groups, each group contains 16 candidate spatial basis vectors, that is, P1=P2=16. For the first part of the indication information, the UE passes Indicates the number of selected spatial basis vectors in group 1, then L2 = L-L1 in group 2. For the second part of the indication information, the UE reports Indicates the L1 spatial basis vectors selected in the first group, by Indicates the L2 spatial basis vectors selected in the second group. For example, based on the above embodiment, the UE also needs to pass Indicates the orthogonal spatial basis vector group of the selected spatial basis vector, that is, the offset in the horizontal and vertical dimensions after sampling. If O1=O2=4, 4 bits are required to indicate the orthogonal spatial basis vector group. For example, the following Table 2 shows the overhead of the selected spatial basis vector when the number of candidate spatial basis vectors in the first and second groups is the same for different L1 and L2 values:

[0178] For example, if the first and second groups contain P1=13 and P2=19 candidate spatial basis vectors respectively, that is, when P1≠P2, the following Table 3 shows the total cost of the selected spatial basis vectors for different values ​​of L1 and L2:

[0179] In some embodiments, if the indication method in the related art is adopted, the UE needs indicates the selected spatial basis vector. But since P tot If it is greater than 15, it is necessary to expand the combination values ​​in Table 1 (including Table 1A and Table 1B), resulting in the need for additional memory in the UE to store the expanded combination values. Based on Table 2 above, it can be seen that by adopting the grouping and two-part reporting method of this embodiment, the bit information reported by the UE can be reduced by 2 bits under certain values. For example, when L1=4 and L2=0, the indication overhead is 4+3+11+0=18. Under certain values, the bit information reported by the UE can be increased by 1 bit. For example, when L1=1 and L2=3, the indication overhead is 4+3+4+10=21. However, in this embodiment, the combination values ​​in Table 1 above can be directly adopted without the need to increase the UE memory to store other combination values. Therefore, while ensuring the indication overhead, the UE storage space does not need to be increased, and the indication reporting of the spatial basis vector selected by the UE is realized when supporting a larger transmitting antenna port.

[0180] Optionally, in some embodiments, for the first part of the above indication information, the UE selects L1 and L2 spatial basis vectors from the two sets of candidate spatial basis vectors, where all possible combinations of L1 and L2 are: {0,4}, {1,3}, {2,2}, {3,1}, {4,0}, totaling L′=5. For the first part, Indicates the number of spatial basis vectors selected by each group. The overhead of the UE reporting the indication information can be found in Table 2 above. This method can be more effective than using For example, when L = 4 and is divided into 4 groups, the combined indication L′ = 35 requires 6 bits for indication, while Therefore, by adopting the combination method for indication in this embodiment, 3 bits can be saved.

[0181] 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.

[0182] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0187] In some embodiments, the terms "search space", "search space set", "search space configuration", "search space set configuration", "control resource set (CORESET)", "CORESET configuration" and the like may be used interchangeably.

[0188] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0189] 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.

[0190] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0191] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0192] In some embodiments, terms such as wireless access scheme and waveform may be used interchangeably.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0197] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0198] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0199] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0200] In some embodiments, step S2101 and step S2102 may be executed in an interchanged order or simultaneously.

[0201] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0202] Through the above method, the network device sends the codebook parameters to the terminal, and the terminal groups the spatial basis vectors to generate K groups of spatial basis vectors, where K is a positive integer. The terminal generates indication information based on the K groups of spatial basis vectors and the codebook parameters and sends it to the network device. The network device determines the first spatial basis vector based on the indication information. This grouping indicates the candidate spatial basis vectors, ensuring that the indication overhead of the terminal's selected spatial basis vector remains unchanged or is reduced without increasing the terminal's memory. This enables the indication of the terminal's selected spatial basis vector to be reported, supporting transmission on larger antenna ports.

[0203] FIG2B is a schematic diagram of an interaction flow of a communication method according to an embodiment of the present disclosure. As shown in FIG2B , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0204] Step S2201: The network device sends codebook parameters to the terminal.

[0205] In some embodiments, the terminal encodes the indication information to be reported based on codebook parameters, generates a codebook, and sends it to the network device. For example, to improve transmission efficiency and reduce overhead during signal transmission, the communication system uses encoding to transmit relevant information, where the codebook parameters can be used for beamforming, antenna (port) selection, MIMO (Multiple-Input Multiple-Output) system transmission, and channel estimation.

[0206] Optionally, in some embodiments, the codebook parameter includes at least one of the following:

[0207] The number of ports in the first dimension and the number of ports in the second dimension;

[0208] The quantity information of the first spatial basis vector;

[0209] The number of ports corresponding to the channel state information reference signal CSI-RS;

[0210] The port parameter information is used to instruct the terminal to determine the port number of the first port according to the port parameter information.

[0211] Optionally, in some embodiments, the codebook parameter further includes first quantity information, where the first quantity information is used to indicate the number of first processing objects in the i-th group of processing objects, where the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0212] Optionally, in some embodiments, the number of ports is the total number of ports of one or more CSI-RS resources, and the number of ports of each CSI-RS resource is equal.

[0213] The optional implementation of step S2201 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0214] Step S2202: The terminal groups the ports to generate K groups of ports, where K is a positive integer.

[0215] For example, in this embodiment, the total number of candidate ports included in the nth port group is P tot , the terminal randomly divides all candidate ports in each candidate port group into K groups of candidate ports, and selects the first port that needs to be indicated and reported from the K groups of candidate ports. Where K is a positive integer, and the number of candidate ports in each group of candidate ports is P i , i is a positive integer less than or equal to K, and P in each group of candidate ports i Can be the same or different.

[0216] For example, in this embodiment, the port is the same as the antenna port. The purpose of the terminal reporting the selected antenna port is to inform the base station or other communication equipment of the antenna port currently selected by the terminal. By determining the antenna port selected by the terminal, the base station can better perform beamforming, signal negotiation, and power control. At the same time, this also helps to reduce interference in multi-antenna systems and improve communication quality and system capacity. The terminal reporting the information of the selected antenna port is also helpful in helping the network optimize the antenna selection (Antenna Selection) or beamforming (Beamforming) algorithm. It can also be used for multi-user interference elimination, beam tracking, and other resource allocation decision-making processes.

[0217] For example, the candidate ports in the candidate port group in the terminal are grouped to facilitate the subsequent separate indication of the ports selected in each group of candidate ports. For multi-port coded transmission, the terminal can reuse the stored combination coefficients to indicate the selected port, thereby avoiding the terminal adding new storage space to store the extended combination coefficients. While ensuring less feedback overhead, the port of the terminal in the candidate port is indicated and reported.

[0218] Step S2203: The terminal generates indication information according to the K groups of ports and codebook parameters and sends it to the network device.

[0219] In some embodiments, the indication information is used to indicate the first port selected by the terminal.

[0220] In some embodiments, the name of the indication information is not limited, and may be, for example, “port indication information”, “coding bit information”, “port coding information”, “port information”, etc.

[0221] For example, the terminal generates K groups of candidate ports based on the above grouping, analyzes the current network environment, selects the first port that needs to be indicated and reported from the K groups of candidate ports, and then uses the codebook parameter as a reference to encode the first port indicated and reported, generates indication information, and indicates the port selected by the terminal to the network device by means of the indication information.

[0222] In some embodiments, the indication information includes first bit information, where the first bit information is used to indicate the first orthogonal port group.

[0223] In some embodiments, the number of bits of the first bit information is Wherein, O1 and O2 are orthogonal groups corresponding to the first orthogonal port group. For example, in this embodiment, the aforementioned ports are ports in the first orthogonal port group. The terminal groups all candidate ports in the first orthogonal port group to generate K groups of ports. Then, based on the current network environment, the terminal selects a port from the K groups of ports to determine the first port. Therefore, the first port is a port in the first orthogonal port group.

[0224] Optionally, in some embodiments, the first orthogonal port group is a port group in a single polarization direction. For example, a single polarization direction refers to the direction in which the electric field or magnetic field oscillates during the propagation of electromagnetic waves. In wireless communications and antenna port communications, polarization is generally used to describe the mode and characteristics of electromagnetic wave propagation. Common polarization directions include horizontal polarization, vertical polarization, and circular polarization. In horizontal polarization, the electric field oscillates parallel to the ground, while in vertical polarization, the electric field oscillates perpendicular to the ground. Circular polarization includes right-hand circular polarization and left-hand circular polarization, in which the horizontal and vertical components (orthogonal components) of the electric field oscillate with the same amplitude and phase. A single polarization direction refers to a specific polarization direction among the above polarization directions. In wireless communication scenarios, a specific polarization direction is used for a specific antenna or communication system to meet signal transmission requirements. Selecting a specific polarization direction can help reduce multipath interference, improve signal quality, and enhance the performance of the communication system. In this embodiment, port groups in a single polarization direction are grouped, and the orthogonal port in the single polarization direction selected by the terminal is indicated and reported.

[0225] In some embodiments, the indication information includes second information, where the second information is used to indicate the first port.

[0226] For example, in this embodiment, the indication information includes the second information. The second information may indicate all first ports selected by the terminal in each group of ports, and may also be used to indicate the first port selected by the terminal in each group of ports.

[0227] Optionally, in some embodiments, the second information includes fourth bit information.

[0228] In some embodiments, the fourth bit information is used to indicate the first port, and the number of bits of the fourth bit information is Among them, L i is the number information of the first port in the i-th group of ports, P i is the total number of ports in the i-th group of ports. The i-th group of ports is any K group of ports.

[0229] Optionally, in some embodiments, the K groups of ports are orthogonal ports in a single polarization direction. Therefore, the fourth bit of information is used to indicate the first orthogonal port in a single polarization direction.

[0230] Optionally, in some embodiments, the indication information further includes first information, where the first information is used to indicate quantity information of the first port.

[0231] For example, the first port selected by the terminal is indicated through indication information, wherein the first information is used to indicate the total number of first ports selected by the terminal from K groups of ports, and the second information is used to indicate each port selected by the terminal from the i-th group of ports.

[0232] For example, when the terminal indicates the first port selected for each group, after determining the number of first ports in other groups, the number of first ports in the Kth group of ports can be determined by: Therefore, when the terminal reports the indication of the K selected first ports, it can only report the second information to indicate the first port selected in the K group of ports, without reporting the first information to indicate the number of first ports in the K group of ports. That is, during the process of reporting the indication using indication information, some indication information does not contain the first information, and only the second information in the indication information is needed to report the first port selected by the terminal.

[0233] In some embodiments, the first information includes third bit information.

[0234] In some embodiments, the third bit information is used to indicate the quantity information of the first port, and the number of bits of the third bit information is or Where L′ is the number of combinations of the number of optional ports in each group of K, P iis the number of ports in the i-th group of ports, the i-th group of ports is any K groups of ports, and i is a positive integer less than or equal to K.

[0235] For example, the third bit information is used to indicate the number of first ports, and the number of bits of the third bit information is: or Where L′ is the number of combinations of the number of optional ports in each group of K, P i is the number of ports in the i-th group of ports. For example, the total number of ports configured on a network device is parameter Determine the number of ports selected by the UE: Put P tot Divided into 2 groups, each group contains 16 ports. The combinations of the number of optional ports in each group are: {8,16}, {9,15}…, {16,8}, then L′=9.

[0236] Optionally, in some embodiments, the second bit information is used to indicate the number information of the first orthogonal ports in a single polarization direction. Therefore, or Used to indicate the number of first orthogonal ports in a single polarization direction.

[0237] In some embodiments, the first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports the channel state information CSI through the first part of information and the second part of information.

[0238] For example, the CSI reporting in the terminal is performed using two parts: a first part of information (Part 1) and a second part of information (Part 2). The first information is reported by carrying the first part of information, and the second information is reported by carrying the second part of information.

[0239] Optionally, in some embodiments, both the first information and the second information are carried by the second part of information, and the terminal reports CSI by using the first part of information and the second part of information.

[0240] For example, the CSI reporting in the terminal is performed using two parts, namely, the first part of information (Part 1) and the second part of information (Part 2). The first information and the second information in this embodiment are reported by carrying the second part of information.

[0241] Step S2204: The network device determines the first port according to the instruction information.

[0242] For example, the network device decodes the indication information based on the codebook parameters according to the indication information, thereby determining the first port selected by the terminal.

[0243] In some embodiments, the first port is used to perform precoding calculation for downlink data transmission.

[0244] In some embodiments, the network device configures K=2 CSI-RS resources for the terminal, each CSI-RS resource has 32 ports, the codebook type is Rel-17 Type II, codebook, P CSI-RS =64, And the network device is also configured with parameters The number of ports selected by the UE is determined to be If P tot Divided into 2 groups, each group contains 16 ports, that is, P1 = P2 = 16. For the number of ports in the first part, P i is the total number of ports in the i-th group of ports, where i<K. For example, the number of ports selected in the K-th group is Therefore, the number of selected ports in group K does not need to be reported. The number of selectable ports in each group is 9, including {8, 16}, {9, 15}, ..., and {16, 8}, i.e., L′ = 9. Table 4 below shows the total overhead of the selected ports when P1 = P2 = 16 and L1 and L2 take different values:

[0245] If the first group and the second group contain P1=13 and P2=19 ports respectively, that is, when P1≠P2, Table 5 shows the total overhead of the selected ports when L1 and L2 take different values.

[0246] Based on the above overhead, when the UE provides feedback on the selected port, it can complete the feedback of the selected port based on the coefficient combination in Table 1. No additional UE memory is required to store the values ​​of other combinations, thereby enabling the reporting of the UE's selected antenna port indication when supporting larger transmit antenna ports.

[0247] In this manner, the network device sends codebook parameters to the terminal, which groups ports into K groups, where K is a positive integer. Based on the K groups and the codebook parameters, the terminal generates indication information and sends it to the network device. The network device then determines the first port based on the indication information. This grouping of candidate ports ensures that the indication overhead for the terminal's selected port remains constant or is reduced, while also minimizing the terminal's memory usage. This allows for reporting of the terminal's selected antenna port, supporting transmission on a wider range of antenna ports.

[0248] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3 , the embodiment of the present disclosure relates to a communication method, which is executed by a terminal. The method includes:

[0249] Step S3101: Receive codebook parameters sent by a network device.

[0250] In some embodiments, the codebook parameter includes at least one of the following:

[0251] The number of ports in the first dimension and the number of ports in the second dimension;

[0252] The quantity information of the first spatial basis vector;

[0253] The number of ports corresponding to the channel state information reference signal CSI-RS;

[0254] The port parameter information is used to instruct the terminal to determine the port number of the first port according to the port parameter information.

[0255] In some embodiments, the codebook parameter includes first quantity information, where the first quantity information is used to indicate the number of first processing objects in the i-th group of processing objects, where the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0256] Step S3102: group the processing objects to generate K groups of processing objects, where K is a positive integer.

[0257] In some embodiments, the processing object includes a spatial basis vector, and the first processing object includes a first spatial basis vector.

[0258] The indication information includes first bit information, where the first bit information is used to indicate a first orthogonal spatial basis vector group, where the first orthogonal spatial basis vector group includes the first spatial basis vector.

[0259] In some embodiments, the processing object comprises a port, and the first processing object comprises a first port.

[0260] For the optional implementation of step S3102, please refer to the optional implementation of step S2102 in Figure 2A and other related parts in the embodiment involved in Figure 2A, or refer to the optional implementation of step S2202 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0261] Step S3103: Generate indication information based on the K groups of processing objects and codebook parameters and send it to the network device.

[0262] In some embodiments, the indication information is used to indicate the first processing object selected by the terminal.

[0263] In some embodiments, the indication information includes second information, and the second information is used to indicate the first processing object.

[0264] In some embodiments, the indication information includes first information, and the first information is used to indicate quantity information of the first processing object.

[0265] In some embodiments, the first information includes second bit information, the second bit information is used to indicate the number of the first spatial basis vectors, and the number of bits of the second bit information is or Wherein, L is the number information of the first spatial basis vectors, and L″ represents the number of combinations of the number of optional spatial basis vectors in each group of K groups.

[0266] In some embodiments, the first information includes a third bit of information, the third bit of information is used to indicate the number of the first port, and the number of bits of the third bit of information is or Where L′ is the number of combinations of the number of optional ports in each group of K, P i is the number of ports in the i-th group of ports, the i-th group of ports is any K groups of ports, and i is a positive integer less than or equal to K.

[0267] In some embodiments, the second information includes a fourth bit of information, the fourth bit of information is used to indicate the first processing object, and the number of bits of the fourth bit of information is Among them, L i is the number information of the first processing object in the i-th group of processing objects, the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0268] In some embodiments, the first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports the channel state information CSI through the first part of information and the second part of information.

[0269] In some embodiments, both the first information and the second information are carried by the second part of information, and the terminal reports CSI through the first part of information and the second part of information.

[0270] For the optional implementation of step S3103, please refer to the optional implementation of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, or refer to the optional implementation of step S2203 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0271] Through the above method, codebook parameters sent by the network device are received, and processing objects are grouped to generate K groups of processing objects, where K is a positive integer. Based on the K groups of processing objects and the codebook parameters, indication information is generated and sent to the network device. This grouping of candidate processing objects ensures that the indication overhead of the terminal's selected processing object remains unchanged or is reduced while not increasing the terminal's memory. This enables the terminal to report the indication of the selected processing object when supporting transmission on a larger antenna port.

[0272] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a communication method, which is executed by a network device. The method includes:

[0273] Step S4101: Send codebook parameters to the terminal.

[0274] In some embodiments, the codebook parameter is used to instruct the terminal to group processing objects to generate K groups of processing objects, where K is a positive integer.

[0275] In some embodiments, the codebook parameter includes at least one of the following:

[0276] The number of ports in the first dimension and the number of ports in the second dimension;

[0277] The quantity information of the first spatial basis vector;

[0278] The number of ports corresponding to the channel state information reference signal CSI-RS;

[0279] The port parameter information is used to instruct the terminal to determine the port number of the first port according to the port parameter information.

[0280] In some embodiments, the codebook parameter includes first quantity information, where the first quantity information is used to indicate the number of first processing objects in the i-th group of processing objects, where the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0281] In some embodiments, the number of ports is the total number of ports of one or more CSI-RS resources, and the number of ports of each CSI-RS resource is equal.

[0282] Step S4102: receiving instruction information sent by the terminal.

[0283] In some embodiments, the indication information is used to indicate the first processing object selected by the terminal, and the indication information is generated by the terminal according to K groups of processing objects and codebook parameters.

[0284] In some embodiments, the processing object includes a spatial basis vector, and the first processing object includes a first spatial basis vector.

[0285] In some embodiments, the processing object comprises a port, and the first processing object comprises a first port.

[0286] In some embodiments, the processing object includes second information, and the second information is used to indicate the first processing object.

[0287] In some embodiments, the processing object includes first information, and the first information is used to indicate quantity information of the first processing object.

[0288] In some embodiments, the first information includes second bit information, the second bit information is used to indicate the number of the first spatial basis vectors, and the number of bits of the second bit information is or Wherein, L is the number information of the first spatial basis vectors, and L″ represents the number of combinations of the number of optional spatial basis vectors in each group of K groups.

[0289] In some embodiments, the first information includes a third bit of information, the third bit of information is used to indicate the number of the first port, and the number of bits of the third bit of information is or Where L′ is the number of combinations of the number of optional ports in each group of K, P i is the number of ports in the i-th group of ports, the i-th group of ports is any K groups of ports, and i is a positive integer less than or equal to K.

[0290] In some embodiments, the second information includes a fourth bit of information, the fourth bit of information is used to indicate the first processing object, and the number of bits of the fourth bit of information is Among them, L i is the number information of the first processing object in the i-th group of processing objects, the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

[0291] In some embodiments, the first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports CSI through the first part of information and the second part of information.

[0292] In some embodiments, both the first information and the second information are carried by the second part of information, and the terminal reports CSI through the first part of information and the second part of information.

[0293] In some embodiments, a first processing object is determined based on the indication information.

[0294] In some embodiments, the first processing object is used to perform precoding calculation for downlink data transmission.

[0295] The optional implementation of step S4102 can refer to the optional implementation of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, or refer to the optional implementation of step S2203 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0296] Through the above method, codebook parameters are sent to the terminal, and indication information sent by the terminal is received. The indication information is used to indicate the first processing object selected by the terminal. This grouping indicates the candidate processing objects, ensuring that the indication overhead of the terminal's selected processing object remains unchanged or is reduced while not increasing the terminal's memory. This enables reporting of the indication of the terminal's selected antenna port to support transmission on a larger number of antenna ports.

[0297] FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a communication method, which includes:

[0298] Step S5101: The network device sends codebook parameters to the terminal.

[0299] For example, the network device sends codebook parameters to the terminal, so that the terminal encodes the reported indication information based on the codebook parameters. For example, the terminal can encode the indication information to be reported based on the Rel-16 eType II, Rel-17 Type II PS codebook, and Rel-18 Type II Doppler codebook sent by the network device, and send the encoded codeword to the network device.

[0300] Optionally, in some embodiments, the codebook parameter includes at least one of the following:

[0301] The number of ports in the first dimension is N1 and the number of ports in the second dimension is N2;

[0302] The total number L of first spatial basis vectors selected by the UE;

[0303] The number of ports corresponding to CSI-RS P CSI-RS ;

[0304] The port parameter information α is used to instruct the terminal to determine the port number of the first port according to the port parameter information, where the first port is a port selected by the terminal.

[0305] Among them, N1 and N2 or P CSI-RS Used to determine the P tot The value of,example,P tot =N1N2, or Optionally, in some embodiments, the codebook parameters also include L i , the L iUsed to indicate the number of spatial basis vectors selected by the UE in each group of candidate spatial basis vectors in the first part of the above two parts of indication information, or the number of ports selected by the UE in each group of candidate ports.

[0306] In some embodiments, the number of CSI-RS ports P CSI-RS , is the sum of the number of ports of one or more CSI-RS resources, and the number of ports of each CSI-RS resource is the same.

[0307] In step S5102 , the terminal divides the candidate spatial basis vectors in the orthogonal candidate spatial basis vector group into K groups of candidate spatial basis vectors, or divides the candidate ports into K groups of candidate ports.

[0308] For example, in this embodiment, the total number of candidate spatial basis vectors included in the nth orthogonal spatial basis vector group is P tot , or the total number of candidate ports in the terminal is P tot , group the candidate spatial basis vectors in each orthogonal spatial basis vector group to obtain K groups of candidate spatial basis vector groups, where the number of candidate spatial basis vectors in the i-th (i∈[1, K]) group of candidate spatial basis vector groups is P i , the number of candidate spatial basis vectors in each group P i The sum of the number of candidate spatial basis vectors in each group is the total number of candidate spatial basis vectors, and

[0309] In some embodiments, P tot is the number of candidate spatial basis vectors in a polarization direction, or the number of ports in a polarization direction. tot Refers to the number of spatial basis vectors contained in the nth orthogonal candidate spatial basis vector group among all orthogonal candidate spatial basis vector groups. For example, the nth orthogonal spatial basis vector group can still be obtained by Instructions confirmed.

[0310] In step S5103, the terminal indicates the selected L spatial basis vectors or L ports by reporting two parts of information.

[0311] For example, the UE analyzes the current network environment based on the above-mentioned K groups of candidate spatial basis vectors or K groups of candidate ports, selects the spatial basis vectors from the K groups of candidate spatial basis vectors based on actual communication needs, and determines the spatial basis vectors selected for reporting in each group, or selects the K groups of candidate ports to determine the ports selected for reporting in each group.

[0312] In some embodiments, the first part of the two-part indication information is used to indicate the number L of spatial basis vectors selected by the UE to be reported in the i-th group of candidate spatial basis vectors. i, or the number of ports L selected by the UE in the i-th group of ports i The second part is used to indicate the L selected by group i i Spatial basis vectors. For example, there are 8 candidate spatial basis vectors in the nth orthogonal candidate spatial basis vector group, A, B, C, D, E, F, G, H; the 8 candidate spatial basis vectors are randomly grouped to generate 4 groups of orthogonal candidate spatial basis vector groups: (A, B), (C), (D, E, F), (G, H). The UE analyzes the current network environment and determines the selection: the first group A, the third group E and the fourth group G and H as the spatial basis vectors to be reported, then the first part of the information indicates: 1 in the first group, 0 in the second group, 1 in the third group, and 2 in the fourth group, and the first group A, the third group E, and the fourth group G and H are indicated in the second part of the information.

[0313] Optionally, in some embodiments, if the number of spatial basis vectors or the number of ports L in the first part is i When configured by the network device, the UE does not need to report the number L in the first part of the information when reporting the indication based on the two parts of information. i .

[0314] In some embodiments, for K groups of candidate spatial basis vectors or K groups of candidate ports, the UE can or Indicates the total number of selected spatial basis vectors in the K groups of candidate spatial basis vectors, or the total number of selected ports in the K groups of candidate ports, where L″ represents the number of combinations of the number of optional spatial basis vectors in each group in the K groups, or the number of combinations of the number of optional candidate ports in each group in the K groups of candidate ports. For example, in this embodiment, when the terminal reports the selected spatial basis vectors or selected ports in the i-th group of candidate spatial basis vectors or the i-th group of candidate ports based on the indication information, the number of spatial basis vectors or the number of ports in the K-th group is equal to Therefore, the number of spatial basis vectors selected by the UE from the Kth group of candidate spatial basis vectors, or the number of ports selected by the UE from the Kth group of candidate ports, does not need to be reported, where i<K.

[0315] Optionally, in some embodiments, if the i-th group selects L i Spatial basis vectors or L i ports, then there are L' combinations of all spatial basis vectors or all port numbers selected by the UE. For the first part above, Indicates the number of spatial basis vectors selected by each group. As for the indication of the number of ports in the first part, the UE can or Indicates the number of selected ports. When the maximum number of ports that can be selected in one polarization direction is fixed, L' is the number of combinations of selectable ports in each group of ports. i is the total number of ports in the i-th group of ports, where i < K, and the number of ports selected by the UE in the K-th group is equal to Therefore, the number of ports selected by the UE from the Kth group of ports does not need to be reported.

[0316] In some embodiments, for the second part of the two parts of the indication information, the UE can Indicates the L selected by the UE in the i group of candidate spatial basis vectors i Spatial basis vectors.

[0317] Step S5104: The network device determines the spatial basis vector or port selected by the terminal according to the indication information reported by the terminal.

[0318] For example, after receiving the indication information sent by the terminal, the network device determines the spatial basis vector or port selected by the UE through the indication information, and the spatial basis vector or port is used for precoding calculation of downlink data transmission.

[0319] For example, the network device is configured with codebook parameters N1=8, N2=4, and L=4, and the codebook type is Rel-16 eType II codebook. The UE indicates the selected spatial basis vector to the network device, and the corresponding P tot =N1P2=32. Using the two-part indication method in the above embodiment, first tot =N1N2=32 is divided into two groups, each group contains 16 candidate spatial basis vectors, that is, P1=P2=16. For the first part of the indication information, the UE passes Indicates the number of selected spatial basis vectors in the first group, then L2 = L-L1 in the second group. For the second part of the indication information, the UE reports Indicates the L1 spatial basis vectors selected in the first group, by Indicates the L selected in the second group ２ For example, based on the above embodiment, the UE also needs to pass Indicates the orthogonal spatial basis vector group of the selected spatial basis vector, that is, the offset in the horizontal and vertical directions after sampling. If O １ =O2=4, then 4 bits are needed to indicate the orthogonal spatial basis vector group. For example, the following Table 2 gives different L １ When the number of candidate spatial basis vectors in the first and second groups is the same, the overhead of the selected spatial basis vectors is:

[0320] For example, if the first and second groups contain P1=13 and P2=19 candidate spatial basis vectors respectively, that is, when P1≠P2, the following Table 3 shows the total cost of the selected spatial basis vectors for different values ​​of L1 and L2:

[0321] In some embodiments, if the indication method in the related art is adopted, the UE needs Indicates the selected spatial basis vector. But since P tot If it is greater than 15, it is necessary to expand the combination values ​​in Table 1 (including Table 1A and Table 1B), resulting in the need for additional memory in the UE to store the expanded combination values. Based on Table 2 above, it can be seen that by adopting the grouping and two-part reporting method of this embodiment, the bit information reported by the UE can be reduced by 2 bits under certain values. For example, when L1=4 and L2=0, the indication overhead is 4+3+11+0=18. Under certain values, the bit information reported by the UE can be increased by 1 bit. For example, when L1=1 and L2=3, the indication overhead is 4+3+4+10=21. However, in this embodiment, the combination values ​​in Table 1 above can be directly adopted without the need to increase the UE memory to store other combination values. Therefore, while ensuring the indication overhead, the UE storage space does not need to be increased, and the indication reporting of the spatial basis vector selected by the UE is realized when supporting a larger transmitting antenna port.

[0322] Optionally, in some embodiments, for the first part of the above indication information, the UE selects L1 and L2 spatial basis vectors from the two sets of candidate spatial basis vectors, where all possible combinations of L1 and L2 are: {0,4}, {1,3}, {2,2}, {3,1}, {4,0}, totaling L'=5. For the first part, the UE can select L1 and L2 spatial basis vectors from the two sets of candidate spatial basis vectors. Indicates the number of spatial basis vectors selected by each group. The overhead of the UE reporting the indication information can be found in Table 2 above. This method can be more effective than using For example, when L = 4 and is divided into 4 groups, the combined indication L′ = 35 requires 6 bits for indication, while Therefore, by adopting the combination method for indication in this embodiment, 3 bits can be saved.

[0323] In some embodiments, the network device configures K=2 CSI-RS resources for the terminal, and each CSI-RS resource has 32 ports. Then P CSI-RS =64, And the network device is also configured with parameters The number of ports selected by the UE is determined to be If Ptot Divided into 2 groups, each group contains 16 ports, that is, P1 = P2 = 16. For the number of ports in the first part, P i is the total number of ports in the i-th group of ports, where i<K. For example, the number of ports selected in the K-th group is Therefore, the number of selected ports in group K does not need to be reported. The number of selectable ports in each group is 9, including {8, 16}, {9, 15}, ..., and {16, 8}, which means L' = 9. Table 4 below shows the total overhead of the selected ports when P1 = P2 = 16 and L1 and L2 take different values:

[0324] If the first group and the second group contain P1=13 and P2=19 ports respectively, that is, when P1≠P2, Table 5 shows the total overhead of the selected ports when L1 and L2 take different values.

[0325] Based on the above overhead, when the UE provides feedback on the selected port, it can complete the feedback of the selected port based on the coefficient combination in Table 1. No additional UE memory is required to store the values ​​of other combinations, thereby enabling the reporting of the UE's selected antenna port indication when supporting larger transmit antenna ports.

[0326] Through the above method, the total candidate spatial basis vectors in the UE are divided into multiple groups, and then the spatial basis vectors selected in each group are indicated separately, thereby ensuring less feedback overhead and not increasing the terminal memory, and realizing the indication reporting of the spatial basis vector or port selected by the terminal when supporting a larger transmitting antenna port.

[0327] Figure 6 is a structural diagram of a terminal proposed according to an embodiment of the present disclosure. As shown in Figure 6, the terminal 6100 may include: a transceiver module 6101, a processing module 6102, and a transceiver module 6103. In some embodiments, the transceiver module 6101 is configured to receive codebook parameters sent by a network device, the processing module 6102 is configured to group processing objects to generate K groups of processing objects, K is a positive integer, and the transceiver module 6103 is configured to generate indication information based on the K groups of processing objects and the codebook parameters and send it to the network device, the indication information is used to indicate the first processing object selected by the terminal. Optionally, the transceiver module 6101, the processing module 6102, and the transceiver module 6103 are used to perform at least one of the communication steps such as determination and / or acquisition performed by the terminal 101 in any of the above methods, which will not be repeated here.

[0328] In some embodiments, the transceiver module 6101 and the transceiver module 6103 may include a receiving module and a transmitting module. The receiving module and the transmitting module may be separate or integrated. Optionally, the transmitting module may be interchangeable with the transmitter. The receiving module may be interchangeable with the receiver.

[0329] In some embodiments, the processing module 6102 may include an execution module and an acquisition module, which may be separate or integrated. Optionally, the execution module and the executor may be interchangeable.

[0330] Figure 7 is a structural diagram of a network device proposed according to an embodiment of the present disclosure. As shown in Figure 7, the network device 7100 may include: a transceiver module 7101 and a transceiver module 7102. In some embodiments, the transceiver module 7101 is configured to send codebook parameters to the terminal, and the codebook parameters are used to instruct the terminal to group the processing objects according to the codebook parameters to generate K groups of processing objects, where K is a positive integer. The transceiver module 7102 is configured to receive indication information sent by the terminal, and the indication information is used to indicate the first processing object selected by the terminal, and the indication information is generated by the terminal based on the K groups of processing objects and the codebook parameters. Optionally, the transceiver module 7101 and the transceiver module 7102 are used to perform at least one of the communication steps such as determination and / or acquisition performed by the network device 102 in any of the above methods, which will not be repeated here.

[0331] In some embodiments, the transceiver module 7101 and the transceiver module 7102 may include a receiving module and a transmitting module. The receiving module and the transmitting module may be separate or integrated. Optionally, the transmitting module may be interchangeable with the transmitter. The receiving module may be interchangeable with the receiver.

[0332] Figure 8 is a schematic diagram of the structure of a communication device 8100 according to an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device 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 8100 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.

[0333] As shown in Figure 8, the communication device 8100 includes one or more third processors 8101. The third processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 8100 is used to perform any of the above methods. Optionally, one or more third processors 8101 are used to call instructions to cause the communication device 8100 to perform any of the above methods.

[0334] In some embodiments, the communication device 8100 further includes one or more third transceivers 8102. When the communication device 8100 includes one or more third transceivers 8102, the third transceiver 8102 performs at least one of the communication steps, such as sending and / or receiving, in the above method, and the third processor 8101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0335] In some embodiments, the communication device 8100 further includes one or more third memories 8103 for storing data. Alternatively, all or part of the third memories 8103 may be located outside the communication device 8100. In an alternative embodiment, the communication device 8100 may include one or more first interface circuits 8104. Optionally, the first interface circuit 8104 is connected to the third memories 8103. The first interface circuit 8104 may be configured to receive data from the third memories 8103 or other devices, and to send data to the third processor 8101 or other devices. For example, the first interface circuit 8104 may read data stored in the third memories 8103 and send the data to the third processor 8101.

[0336] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8 . 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 and 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.

[0337] FIG9 is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG9 , but the present invention is not limited thereto.

[0338] The chip 8200 includes one or more fourth processors 8201. The chip 8200 is configured to execute any one of the above methods.

[0339] In some embodiments, the chip 8200 further includes one or more second interface circuits 8202. The terms interface circuit, interface, and transceiver pins are optionally interchangeable. In some embodiments, the chip 8200 further includes one or more fourth memories 8203 for storing data. Optionally, all or part of the fourth memories 8203 may be located external to the chip 8200. Optionally, the second interface circuit 8202 is connected to the fourth memory 8203. The second interface circuit 8202 can be used to receive data from the fourth memory 8203 or other devices, or to send data to the fourth memory 8203 or other devices. For example, the second interface circuit 8202 can read data stored in the fourth memory 8203 and send the data to the fourth processor 8201.

[0340] In some embodiments, the second interface circuit 8202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the second interface circuit 8202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the second interface circuit 8202 performs data exchange between the fourth processor 8201, the chip 8200, the fourth memory 8203, or the transceiver device. In some embodiments, the fourth processor 8201 performs at least one of the other steps.

[0341] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0342] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 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 temporary storage medium.

[0343] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0344] 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 communication method, characterized in that: Executed by a terminal, the method includes: Receiving codebook parameters sent by a network device; Grouping the processing objects to generate K groups of processing objects, where K is a positive integer; Generate indication information according to the K groups of processing objects and the codebook parameters and send it to the network device, where the indication information is used to indicate a first processing object selected by the terminal.

2. The method according to claim 1, characterized in that The processing object includes a spatial basis vector, and the first processing object includes a first spatial basis vector.

3. The method according to claim 1, characterized in that The processing object includes a port, and the first processing object includes a first port.

4. The method according to claim 2, characterized in that The indication information includes first bit information, where the first bit information is used to indicate a first orthogonal spatial basis vector group, where the first orthogonal spatial basis vector group includes the first spatial basis vector.

5. The method according to claim 1, wherein The indication information includes second information, and the second information is used to indicate the first processing object.

6. The method according to claim 5, characterized in that The indication information includes first information, and the first information is used to indicate quantity information of the first processing objects.

7. The method according to claims 2 and 6, characterized in that The first information includes second bit information, and the second bit information is used to indicate the number of the first spatial basis vectors. The number of bits of the second bit information is or Wherein, L is the quantity information of the first spatial basis vectors, and L″ represents the number of combinations of the number of optional spatial basis vectors in each group in K groups.

8. The method according to claims 3 and 6, characterized in that The first information includes third bit information, and the third bit information is used to indicate the quantity information of the first port. The number of bits of the third bit information is or Wherein, L' is the number of combinations of the number of optional ports in each group of K groups, and P i is the number of ports in the i-th group of ports, the i-th group of ports is any of the K groups of ports, and i is a positive integer less than or equal to K.

9. The method according to claim 5, characterized in that The second information includes fourth bit information, the fourth bit information is used to indicate the first processing object, and the number of bits of the fourth bit information is Among them, the L i is the quantity information of the first processing objects in the i-th group of processing objects, the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

10. The method according to claim 5, characterized in that The first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports channel state information CSI through the first part of information and the second part of information.

11. The method according to claim 5, characterized in that The first information and the second information are both carried by the second part of information, and the terminal reports CSI by using the first part of information and the second part of information.

12. A communication method, characterized in that: Executed by a network device, the method includes: Sending a codebook parameter to the terminal, where the codebook parameter is used to instruct the terminal to group processing objects according to the codebook parameter to generate K groups of processing objects, where K is a positive integer; Indication information sent by the terminal is received, where the indication information is used to indicate a first processing object selected by the terminal, and the indication information is generated by the terminal according to the K groups of processing objects and the codebook parameters.

13. The method according to claim 12, characterized in that The processing object includes a spatial basis vector, and the first processing object includes a first spatial basis vector.

14. The method according to claim 12, characterized in that The processing object includes a port, and the first processing object includes a first port.

15. The method according to claim 12, characterized in that The processing object includes second information, and the second information is used to indicate the first processing object.

16. The method according to claim 15, characterized in that The processing object includes first information, and the first information is used to indicate quantity information of the first processing object.

17. The method according to claims 13 and 16, characterized in that The first information includes second bit information, and the second bit information is used to indicate the number of the first spatial basis vectors. The number of bits of the second bit information is or Wherein, L is the quantity information of the first spatial basis vectors, and L″ represents the number of combinations of the number of optional spatial basis vectors in each group in K groups.

18. The method according to claims 14 and 16, characterized in that The first information includes third bit information, and the third bit information is used to indicate the quantity information of the first port. The number of bits of the third bit information is or Wherein, L' is the number of combinations of the number of optional ports in each group of K groups, and P i is the number of ports in the i-th group of ports, the i-th group of ports is any of the K groups of ports, and i is a positive integer less than or equal to K.

19. The method according to claim 15, characterized in that The second information includes fourth bit information, the fourth bit information is used to indicate the first processing object, and the number of bits of the fourth bit information is Among them, the L i is the quantity information of the first processing objects in the i-th group of processing objects, the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

20. The method according to claim 16, wherein The first information is carried by the first part of information, the second information is carried by the second part of information, and the terminal reports CSI through the first part of information and the second part of information.

21. The method according to claim 16, wherein The first information and the second information are both carried by the second part of information, and the terminal reports CSI by using the first part of information and the second part of information.

22. The method according to claims 13 and 14, characterized in that The codebook parameter includes at least one of the following: The number of ports in the first dimension and the number of ports in the second dimension; quantity information of the first spatial basis vectors; The number of ports corresponding to the channel state information reference signal CSI-RS; Port parameter information, where the port parameter information is used to instruct the terminal to determine the port number of the first port according to the port parameter information.

23. The method according to claim 22, characterized in that The codebook parameter includes first quantity information, where the first quantity information is used to indicate the number of the first processing objects in the i-th group of processing objects, where the i-th group of processing objects is any K groups of processing objects, and i is a positive integer less than or equal to K.

24. The method according to claim 22, characterized in that The number of ports is the total number of ports of one or more CSI-RS resources, and the number of ports of each CSI-RS resource is equal.

25. The method according to claim 12, wherein The method further comprises: The first processing object is determined according to the indication information, where the first processing object is used to perform precoding calculation for downlink data transmission.

26. A terminal, characterized in that: include: a transceiver module configured to receive codebook parameters sent by a network device; a processing module configured to group processing objects to generate K groups of processing objects, where K is a positive integer; The transceiver module is configured to generate indication information according to the K groups of processing objects and the codebook parameters and send it to the network device, where the indication information is used to indicate the first processing object selected by the terminal.

27. A network device, characterized in that: include: a transceiver module configured to send a codebook parameter to a terminal, wherein the codebook parameter is used to instruct the terminal to group processing objects according to the codebook parameter to generate K groups of processing objects, where K is a positive integer; The transceiver module is configured to receive indication information sent by the terminal, where the indication information is used to indicate a first processing object selected by the terminal, and the indication information is generated by the terminal according to the K groups of processing objects and the codebook parameters.

28. A communication device, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 1 to 11.

29. A communication device, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 12 to 25.

30. A communication system, characterized in that: The invention comprises a terminal and a network device, wherein the terminal is configured to implement the communication method according to any one of claims 1 to 11, and the network device is configured to implement the communication method according to any one of claims 12 to 25.

31. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1 to 11, or the communication device is caused to execute the communication method according to any one of claims 12 to 25.

32. A computer program product comprising a computer program and / or instructions, characterized in that When the computer program and / or instruction is executed by a communication device, the communication method according to any one of claims 1 to 11 is implemented; or when the computer program and / or instruction is executed by a communication device, the communication method according to any one of claims 12 to 25 is implemented.

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