CN110071749B - Antenna selection indication method, device and system - Google Patents

Abstract

The application provides a communication method, a device and a system, wherein the communication method comprises the following steps: receiving reference signal indication information, wherein the reference signal indication information indicates a first reference signal resource and/or a first reference signal resource group; the first reference signal resource group and the first antenna of the terminal device have a corresponding relationship. According to the communication method, the corresponding relation between the reference signal resource and the antenna is indicated through the reference signal indication information, so that the antenna for sending the uplink data by the terminal equipment and the scheduling of the uplink data by the network equipment are kept consistent.

Description

Antenna selection indication method, device and system

Technical Field

The present application relates to the field of wireless communications, and more particularly, to a communication method, apparatus and system.

Background

In the case of limited capability of the terminal device, the terminal device is configured with less antenna radio frequency circuits (RF chain), and the channel of the transmitting antenna is generally smaller than that of the receiving antenna. The Physical Uplink Shared Channel (PUSCH) uplink antenna selection technology refers to selecting an antenna to transmit data, and a terminal device switches antennas connected to a radio frequency circuit through a switching device, so as to transmit data.

New generation Radio Access Technology, such as 5G (New Radio Access Technology, NR), does not support the network device to configure the terminal device with PUSCH antenna selection functions (including closed-loop antenna selection and open-loop antenna selection), and the channels experienced by multiple antennas of the terminal device may be different, and the difference in channel state cannot be utilized. Therefore, how to utilize the difference of the channel states becomes an urgent problem to be solved.

Disclosure of Invention

The application provides a communication method, a communication device and a communication system, which indicate the corresponding relation between reference signal resources and antennas through reference signal indication information so as to support the realization of an antenna selection function, and further improve the performance of the system by utilizing the difference of channel states.

In a first aspect, a communication method is provided, and the communication method includes: receiving reference signal indication information, wherein the reference signal indication information indicates a first reference signal resource and/or a first reference signal resource group; the first reference signal resource group and the first antenna have a corresponding relationship.

In some possible implementations, the receiving reference signal indication information includes: reference signal indication information is received from a first network device.

In some possible implementations, the reference signal includes a reference signal for uplink sounding.

Further, the reference signal is a reference signal for uplink sounding.

In some possible implementations, the reference signal indication information is carried in downlink control information DCI (e.g., DCI carried by a downlink control channel), or the reference signal indication information is carried in higher layer signaling.

According to the communication method, the corresponding relation between the reference signal resource and the antenna is indicated through the reference signal indication information, so that the antenna for sending the uplink data by the terminal equipment and the scheduling of the uplink data by the network equipment are kept consistent.

In some possible implementations, the first antenna includes one or more antennas.

With reference to the first aspect, in some possible implementations of the first aspect, the method further includes: transmitting uplink data to at least part of the first antennas; or transmitting uplink data through at least part of the first antennas; or, controlling the power of at least part of the first antennas to be not 0 when transmitting uplink data, or, to be greater than or equal to a first threshold; or, transmitting uplink data with non-zero power or one or more powers greater than or equal to a first threshold through at least some of the first antennas.

In some possible implementations, the transmitting uplink data through at least some of the first antennas includes: and transmitting uplink data to the second network equipment through at least part of the first antennas.

In some possible implementation manners, the terminal device receives reference signal indication information from a first network device, and sends uplink data to a second network device, where the first network device and the second network device are the same network device, or the first network device and the second network device are different network devices.

In some possible implementations, the first network device and the second network device are different network devices, the first network device and the second network device are in different geographical locations, or the first network device and the second network device are separate physical devices (i.e., the first network device and the second network device are not integrated in the same device).

With reference to the first aspect, in some possible implementation manners of the first aspect, the reference signal indication information includes at least one of indication information of at least one reference signal resource group, indication information of at least one reference signal resource, or antenna port indication information corresponding to the at least one reference signal resource, where the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource.

In some possible implementations, the reference signal indication information includes indication information of at least one reference signal resource group, the indication information of the at least one reference signal resource, or when at least two kinds of indication information in antenna port indication information corresponding to the at least one reference signal resource are indicated, the at least two kinds of indication information are indicated by joint coding, or the at least two kinds of indication information are indicated by separate coding.

With reference to the first aspect, in some possible implementation manners of the first aspect, the reference signal indication information is further used to indicate weight information of a transmission uplink data channel, where the weight information includes at least one of precoding matrix information, a precoder, spatial beamforming, or a spatial transmission filter.

In some possible implementations, the precoding matrix refers to a weight in a form of a mathematical matrix used by the transmitting end to perform precoding processing. The set of at least one precoding matrix may be a codebook, and the precoding matrix in the codebook may be determined by an index of the precoding matrix. The index may be composed of one or more indexes. The precoding matrix information may be embodied as an index of the precoding matrix.

In some possible implementation manners, when the weight information is precoding indication information, the weight information is identified by an index of a precoding matrix.

With reference to the first aspect, in some possible implementations of the first aspect, the method further includes: receiving resource configuration information, the resource configuration information including at least one reference signal resource group, the at least one reference signal resource group including at least one reference signal resource, the at least one reference signal resource including a first reference signal resource.

In some possible implementations, the receiving resource configuration information includes: resource configuration information is received from a third network device.

In some possible implementations, the terminal device receives reference signal indication information from the first network device, the terminal device receives resource configuration information from the third network device, and the first network device and the third network device are the same network device, or the first network device and the third network device are different network devices.

In some possible implementations, the first network device and the third network device are different network devices, and the first network device and the third network device are in different geographical locations, or the first network device and the third network device are separate physical devices (i.e., the first network device and the third network device are not integrated in the same device).

With reference to the first aspect, in some possible implementation manners of the first aspect, the resource configuration information is carried in a higher layer signaling.

In some possible implementations, the higher layer signaling may include, for example, radio resource control messages and medium access control elements.

With reference to the first aspect, in some possible implementations of the first aspect, the at least one reference signal resource has a correspondence with at least one antenna.

In some possible implementations, the identity of each of the at least one reference signal resource has a correspondence with the identity of each of the at least one antenna.

With reference to the first aspect, in some possible implementations of the first aspect, at least a part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function.

With reference to the first aspect, in some possible implementations of the first aspect, the uplink transmission function is a codebook-based uplink transmission function or a non-codebook-based uplink transmission function.

In some possible implementations, when the uplink transmission mode is codebook-based transmission, the antenna port of the reference signal resource has a quasi-co-location relationship with the antenna port transmitting the uplink data.

In some possible implementations, when the uplink transmission mode is non-codebook-based transmission, (the antenna port of) the reference signal resource applies the same or similar spatial transmission filter as (the antenna port of) the uplink data is transmitted.

With reference to the first aspect, in some possible implementations of the first aspect, the at least one reference signal resource group includes a first set of reference signal resource groups and a second set of reference signal resource groups, the first set of reference signal resource groups has a reference signal switching function, the second set of reference signal resource groups has an uplink transmission function, and the first set of reference signal resource groups is associated with the second set of reference signal resource groups.

According to the communication method, the network equipment can receive the reference signals sent by the specific antenna by establishing the association relation between the reference signal resource groups, and the uplink data sending antenna is indicated through the reference signal indication information, so that the effect of controlling the uplink data sending antenna by using the reference signals is achieved, and the configuration complexity and the configuration overhead are reduced.

With reference to the first aspect, in some possible implementations of the first aspect, at least a part of the at least one reference signal resource group has an antenna selection function for uplink data; or, at least a part of the at least one reference signal resource has an antenna selection function for uplink data.

According to the communication method, the reference signal resources are used for antenna selection of the uplink data, so that the channels experienced by the transmission of the reference signals and the transmission of the uplink data are consistent, and the network equipment is facilitated to determine the scheduling information. The scheduling information may include at least one of modulation coding information, code block size information, weight information, and the like.

In a second aspect, a communication method is provided, which includes: transmitting reference signal indication information, wherein the reference signal indication information indicates a first reference signal resource and/or a first reference resource group; the first reference resource group and the first antenna have a corresponding relationship, and the first reference signal resource group and the first antenna have a corresponding relationship.

In some possible implementations, the first antenna includes one or more antennas.

In some possible implementations, the sending the reference signal indication information includes: the first network device transmits reference signal indication information.

In some possible implementations, the reference signal includes a reference signal for uplink sounding.

Further, the reference signal is a reference signal for uplink sounding.

In some possible implementations, the reference signal indication information is carried in downlink control information DCI, or the reference signal indication information is carried in higher layer signaling.

With reference to the second aspect, in some possible implementations of the second aspect, the method further includes: and receiving uplink data from at least part of the first antennas.

In some possible implementations, the receiving uplink data includes: the second network device receives the uplink data from the terminal device.

In some possible implementation manners, a first network device sends reference signal indication information, a second network device receives uplink data, and the first network device and the second network device are the same network device, or the first network device and the second network device are different network devices.

In some possible implementations, the first network device and the second network device are different network devices, the first network device and the second network device are in different geographical locations, or the first network device and the second network device are separate physical devices (i.e., the first network device and the second network device are not integrated in the same device).

With reference to the second aspect, in some possible implementations of the second aspect, the reference signal indication information includes at least one of indication information of at least one reference signal resource group, indication information of at least one reference signal resource, or antenna port indication information corresponding to the at least one reference signal resource, where the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource.

With reference to the second aspect, in some possible implementation manners of the second aspect, the reference signal indication information is further used to indicate weight information of an uplink data channel, where the weight information includes at least one of precoding matrix information, a precoder, spatial beamforming, or a spatial transmission filter.

With reference to the second aspect, in some possible implementations of the second aspect, the method further includes: sending resource configuration information, the resource configuration information including at least one reference signal resource group, the at least one reference signal resource group including at least one reference signal resource, the at least one reference signal resource group including the first reference signal resource group, the at least one reference signal resource including the first reference signal resource.

In some possible implementations, the sending the resource configuration information includes: the third network device sends the resource configuration information.

In some possible implementation manners, a first network device sends reference signal indication information, a third network device sends resource configuration information, and the first network device and the third network device are the same network device, or the first network device and the third network device are different network devices.

In some possible implementations, the first network device and the third network device are different network devices, and the first network device and the third network device are in different geographical locations, or the first network device and the third network device are separate physical devices (i.e., the first network device and the third network device are not integrated in the same device).

With reference to the second aspect, in some possible implementations of the second aspect, the resource configuration information is carried in higher layer signaling.

In some possible implementations, the higher layer signaling may include radio resource control messages and medium access control elements.

With reference to the second aspect, in some possible implementations of the second aspect, the at least one reference signal resource has a correspondence with at least one antenna.

With reference to the second aspect, in some possible implementations of the second aspect, at least a part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function.

With reference to the second aspect, in some possible implementations of the second aspect, the uplink transmission function is a codebook-based uplink transmission function or a non-codebook-based uplink transmission function.

In some possible implementations, when the uplink transmission mode is codebook-based transmission, the antenna port of the reference signal resource has a quasi-co-location relationship with the antenna port transmitting the uplink data.

In some possible implementations, when the uplink transmission mode is non-codebook-based transmission, (the antenna port of) the reference signal resource applies the same or similar spatial transmission filter as (the antenna port of) the uplink data is transmitted.

With reference to the second aspect, in some possible implementations of the second aspect, the at least one reference signal resource group includes a first set of reference signal resource groups having a reference signal switching function and a second set of reference signal resource groups having an uplink transmission function, and the first set of reference signal resource groups is associated with the second set of reference signal resource groups.

With reference to the second aspect, in some possible implementations of the second aspect, at least a part of the at least one reference signal resource group has an antenna selection function for uplink data; or, at least a part of the at least one reference signal resource has an antenna selection function for uplink data.

In a third aspect, an apparatus is provided. The apparatus provided by the present application has the functionality to implement the behavior of the terminal device or the network device in the above-described method aspect, which comprises means (means) corresponding to the steps or functionalities described for performing the above-described method aspect. The steps or functions may be implemented by software, or by hardware (e.g., a circuit), or by a combination of hardware and software.

In one possible design, the apparatus includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform the corresponding functions of the terminal device in the above method. For example, uplink data is sent to the network device according to the reference signal indication information. The communication unit is used for supporting the device to communicate with other equipment and realizing receiving and/or sending functions. For example, reference signal indication information is received.

Optionally, the apparatus may also include one or more memories for coupling with the processor that hold the necessary program instructions and/or data for the apparatus. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.

The apparatus may be a smart terminal or a wearable device, and the communication unit may be a transceiver or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or interface.

The device may also be a communication chip. The communication unit may be an input/output circuit or an interface of the communication chip.

In another possible design, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver or the input/output circuit to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, so that the apparatus performs the method performed by the terminal device in the first aspect or any one of the possible implementations of the first aspect.

In one possible design, the apparatus includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform the corresponding functions of the network device in the above method. For example, reference signal indication information is generated. The communication unit is used for supporting the device to communicate with other equipment and realizing receiving and/or sending functions. For example, reference signal indication information is transmitted.

Optionally, the apparatus may also include one or more memories for coupling with the processor, which stores program instructions and/or data necessary for the network device. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.

The apparatus may be a base station, a gNB, a TRP, or the like, and the communication unit may be a transceiver, or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or interface.

The device may also be a communication chip. The communication unit may be an input/output circuit or an interface of the communication chip.

In another possible design, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver or the input/output circuit to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, so that the apparatus performs the method performed by the network device in any of the possible implementations of the second aspect or the second aspect.

In a fourth aspect, a system is provided, which includes the terminal device and the network device.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program comprising instructions for performing the method of the first aspect or any one of the possible implementations of the first aspect.

A sixth aspect provides a computer-readable storage medium for storing a computer program comprising instructions for performing the method of the second aspect or any one of the possible implementations of the second aspect.

In a seventh aspect, a computer program product is provided, the computer program product comprising: computer program code for causing a computer to perform the method of the first aspect or any of the possible implementations of the first aspect when the computer program code runs on a computer.

In an eighth aspect, there is provided a computer program product comprising: computer program code for causing a computer to perform the method of any of the above second aspects and possible implementations of the second aspect when said computer program code is run on a computer.

Drawings

Fig. 1 is a schematic diagram of a communication system suitable for use in the communication method of the embodiment of the present application.

Fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of a transmitting antenna and a receiving antenna inside a terminal device.

Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: long Term Evolution (LTE) systems, Worldwide Interoperability for Microwave Access (WiMAX) communication systems, future fifth Generation (5th Generation, 5G) systems, such as new radio access technology (NR), and future communication systems, such as 6G systems.

This application is intended to present various aspects, embodiments or features around a system that may include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.

In addition, in the embodiments of the present application, the word "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.

In the embodiment of the present application, information (information), signal (signal), message (message), channel (channel) may be mixed, and it should be noted that the intended meanings are consistent when the differences are not emphasized. "of", "corresponding", and "corresponding" may sometimes be used in combination, it being noted that the intended meaning is consistent when no distinction is made.

In the embodiment of the present application, sometimes a subscript such as W1 may be mistaken for a non-subscript form such as W1, and its intended meaning is consistent when the distinction is not emphasized.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The embodiment of the application can be applied to a Time Division Duplex (TDD) scene and can also be applied to a Frequency Division Duplex (FDD) scene.

The embodiment of the application can be applied to a traditional typical network, and can also be applied to a future UE-centric (UE-centric) network. A UE-centric network introduces a network architecture without a cell (Non-cell), that is, a large number of small stations are deployed in a certain area to form a super cell (super cell), and each small station is a Transmission Point (TP) or a TRP of the super cell and is connected to a centralized controller (controller). When the UE moves in the Hyper cell, the network side equipment selects a new sub-cluster for the UE to serve, thereby avoiding real cell switching and realizing the continuity of UE service. The network side device comprises a wireless network device. Or, in a network with UE as the center, multiple network side devices, such as small stations, may have independent controllers, such as distributed controllers, each small station may independently schedule users, and there is interaction information between small stations over a long period of time, so that there is also a certain flexibility when providing cooperative service for UE.

In the embodiment of the present application, different base stations may be base stations with different identities, and may also be base stations with the same identity and deployed in different geographic locations. Since the base station does not know whether the base station relates to the application scenario of the embodiment of the present application before the base station is deployed, the base station or the baseband chip should support the method provided by the embodiment of the present application before the base station is deployed. It is to be understood that the aforementioned base stations with different identities may be base station identities, cell identities, or other identities.

Some scenarios in the embodiment of the present application are described by taking a scenario of an NR network in a wireless communication network as an example, it should be noted that the scheme in the embodiment of the present application may also be applied to other wireless communication networks, and corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.

For the convenience of understanding the embodiments of the present application, a communication system applicable to the embodiments of the present application will be first described in detail by taking the communication system shown in fig. 1 as an example. Fig. 1 shows a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application. As shown in fig. 1, the communication system 100 includes a network device 102 and a terminal device 106, where the network device 102 may be configured with multiple antennas and the terminal device may also be configured with multiple antennas. Optionally, the communication system may further include the network device 104, and the network device 104 may also be configured with multiple antennas.

It should be understood that network device 102 or network device 104 may also include a number of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, etc.).

The network device is a device with a wireless transceiving function or a chip that can be set in the device, and the device includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WIFI) system Access Point (AP), wireless relay Node, wireless backhaul Node, transmission point (TRP or transmission point, TP), etc., and may also be 5G, such as NR, a gbb in the system, or a transmission point (TRP or TP), a set (including multiple antennas) of a base station in the 5G system, or a panel of a base station (including multiple antennas, or a BBU) in the 5G system, or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU implements Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layers, and the DU implements Radio Link Control (RLC), Medium Access Control (MAC) and Physical (PHY) layers. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered to be transmitted by the DU or by the DU + RU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, or may be divided into network devices in the core network CN, which is not limited herein.

A terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. In the present application, a terminal device having a wireless transceiving function and a chip that can be installed in the terminal device are collectively referred to as a terminal device.

In the communication system 100, the network device 102 and the network device 104 may each communicate with a plurality of terminal devices (e.g., the terminal device 106 shown in the figure). Network device 102 and network device 104 may communicate with one or more terminal devices similar to terminal device 106. It should be understood that the terminal device communicating with network device 102 and the terminal device communicating with network device 104 may be the same or different. The terminal device 106 shown in fig. 1 may communicate with both the network device 102 and the network device 104, but this only illustrates one possible scenario, and in some scenarios, the terminal device may only communicate with the network device 102 or the network device 104, which is not limited in this application.

It should be understood that fig. 1 is a simplified schematic diagram of an example for ease of understanding only, and that other network devices or other terminal devices may also be included in the communication system, which are not shown in fig. 1.

With the development of multi-antenna technology, a network device and a terminal device may be respectively configured with a plurality of transmitting antennas and receiving antennas. Some terminal devices may support fewer transmit antennas than receive antennas, e.g., 1T2R (i.e., one transmit antenna, two receive antennas), or 2T4R (i.e., two transmit antennas, four receive antennas), or aitbr (a < b), etc. Taking 1T2R as an example, this can be understood as: the terminal equipment can only use one antenna to transmit uplink signals/channels at the same time, and can use two antennas to receive downlink signals/channels at the same time. Therefore, when Channel State Information (CSI) CSI of a downlink channel needs to be acquired through channel reciprocity, it may be required that the terminal device sends reference signals for channel sounding, such as Sounding Reference Signals (SRS), through different antennas at different times. This approach may be referred to as antenna switching, or antenna selection.

Before describing the embodiments of the present application, a few relevant concepts in NR will be briefly described.

Antenna port: the uplink data channel comprises at least one of an antenna port for a channel (referred to as an uplink data channel for short), such as a Physical Uplink Shared Channel (PUSCH), a reference signal (referred to as a demodulation reference signal for short), such as a demodulation reference signal (DMRS), for demodulation, a reference signal (referred to as a channel sounding reference signal for short), such as a Sounding Reference Signal (SRS), for channel sounding, and the like, which are used for carrying a specific physical channel and/or a physical signal. The signals transmitted through the same antenna port, regardless of whether the signals are transmitted through the same or different physical antennas, the channels corresponding to the paths they travel through in the spatial transmission may be regarded as the same or related (e.g., large-scale channel characteristics, such as the channel matrix H, are the same), that is, the receiving end may consider the channels of the signals transmitted through the same antenna port to be the same or related when demodulating. Antenna port is a logical meaning. Generally, a signal receiving end recognizes signals having different transmission channels through an antenna port.

An antenna: may also be referred to as a user antenna, or a user antenna port, or a user port, etc., may also be referred to as a transmit antenna or a receive antenna. The antenna may have a corresponding relationship with the feed port of the antenna. The transmit antenna refers to an antenna port associated with a physical transmit antenna, and generally, a physical antenna refers to an element of the physical antenna. Antennas are also identified by ports, but are different from the antenna ports that carry the physical channels. The transmitting antenna is a physical meaning, and may or may not be associated with a logical port in the design, and different antennas may be distinguished by different identifiers or indexes.

In general, the mapping relationship of logical antennas and physical antennas is an implementation issue. One or more physical antennas may be weighted to form a logical antenna. The mapping of the logical port and the transmitting antenna array subunit of the user can also realize the problem for the user, and the user can number the transmitting antenna array subunit and map the transmitting antenna array subunit of the logical port domain.

The reference signals comprise uplink reference signals and downlink reference signals. The uplink reference signal is at least one of a reference signal for uplink channel measurement and a reference signal for demodulation. The reference signal for uplink channel measurement may be a channel sounding signal SRS, or other reference signals with an uplink channel measurement function. The downlink reference signal includes a reference signal for demodulation, a channel state measurement signal, and the like.

Channel Sounding Reference Signal (SRS) resource group: at least one SRS resource may be included. The groups of SRS resources can be distinguished by the identification of the groups of SRS resources. One or more SRS resources can be configured in one SRS resource group, and the configuration of one SRS resource can include an identifier of the SRS resource. One or more SRS resources configured in one SRS resource group can be distinguished by SRS resource identification. The SRS resource identifiers in one SRS resource group may be numbered within one SRS resource group (that is, the SRS resource identifiers may be the same in different SRS resource groups, the SRS resource identifiers are specific to each SRS resource group, and the SRS resources represented by the SRS resources having the same identifier in a plurality of SRS resource groups are different), or may be numbered for one terminal device (that is, the SRS resource identifiers may be different in different SRS resource groups, or the SRS resources represented by the SRS resources having the same identifier in a plurality of SRS resource groups are the same), or may be numbered within a cell (that is, the SRS resource numbers may be shared for different terminal devices within a cell, and the SRS resources having the same identifier for different terminal devices are the same). For one set of SRS resources, its use can be configured. Such use may be considered to be related to transmission characteristics, and alternative uses include: beam management, antenna switching, codebook-based uplink transmission, non-codebook-based uplink transmission, codebook-based uplink antenna selection (antenna selection) transmission, non-codebook-based uplink antenna selection transmission, and the like.

The beam management means that at least one of a transmission beam and a reception beam of at least two SRS resources in the SRS resource group is different when the SRS resource group is configured for the function.

The antenna switching means that when the SRS resource group is configured for the function, SRS transmission antennas of at least two SRS resources in the SRS resource group are not completely the same.

The codebook-based uplink transmission refers to that when the SRS resource group is configured for the function, the SRS resource group may be used to indicate precoding matrix information in a codebook.

The non-codebook-based uplink transmission refers to that when the SRS resource group is configured for the function, the SRS resource group may be used to indicate weight information of at least one of a precoder, a spatial transmission filter, and the like.

The uplink antenna selection (antenna selection) transmission based on the codebook refers to that when the SRS resource group is configured for the function, the SRS resource group can be used to indicate an antenna and precoding matrix information in the codebook.

The non-codebook-based uplink antenna selection transmission refers to that when the SRS resource group is configured for the function, the SRS resource group can be used to indicate an antenna and weight information of at least one of a precoder or a spatial transmission filter.

Further, generally speaking, the terminal device does not expect to receive the number of antenna ports configured with different configurations for each SRS resource in one SRS resource group, or the terminal device does not expect to receive the number of bandwidth configured with different configurations for each SRS resource in one SRS resource group.

Number of antenna ports of physical uplink shared channel: in codebook-based transmission (including no day selection and with day selection), the number of the antenna ports of the SRS configured by the indicated SRS resource can be determined; in non-codebook-based transmission (including when there is no day selection and there is a day selection), the number of SRS resources in the indicated SRS resource group can be determined, or the total number of SRS resources in the configured SRS resource group can be determined.

Weight information: in the multi-antenna technology, weighting is performed on multiple antennas (both logical and physical), and by such weighting, a transmitted or received signal has a certain energy distribution characteristic in space, such as representing the accumulation of energy in a partial direction. The signal directivity effect achieved by such weight adjustment may also be referred to as precoding or beamforming.

Generally, the digital weight information operating at the baseband can be identified by a precoding matrix, a precoder, and the like. The weights formed by phase adjustment of phase shifters connected to physical antennas can be considered as analog weights, and can also be referred to as spatial transmission filters. Generally, the digital weights and the analog weights can be mixed, for example, a digital weight matrix is applied at the baseband and an analog weight matrix is applied at the rf. Therefore, there is no strict technical distinction between precoding matrices, precoders, spatial transmission filters, and the like.

In addition, the weights are applied in combination with the antennas and/or antenna ports in a functional manner, for example, the function may be a multiplication, meaning that the weights may be multiplied by the signals on the antennas and/or antenna ports as a matrix. Specifically, for example, when the weight is a precoding matrix, the precoding matrix may be multiplied by a vector formed by the data stream carried by the DMRS antenna port, so as to achieve the purpose of precoding the data stream, so as to reduce inter-stream interference and improve the system gain. Or, for example, by adjusting the phase of a phase shifter connected to an antenna, an analog weight is formed for a transmitted signal, which is also an effect of performing multiplication weighting on a physical antenna mathematically.

When the weight value information refers to precoding matrix information, the process that the terminal equipment acquires uplink precoding matrix information is as follows: the network device configures one or more SRS resources for the terminal device, and configures the number of corresponding antenna ports for the SRS resources, such as 1, 2, and 4, to indicate how many antenna ports the SRS resources use for transmission. Optionally, the antenna ports of the SRS resources select antenna ports corresponding to the number of the correspondingly configured antenna ports from the lowest position of the selectable SRS antenna ports, for example, when the number of the antenna ports configured with the SRS resources is 4 and the lowest position of the antenna ports selectable by the SRS is 3000, the antenna ports of the SRS resources are 3000, 3001, 3002, and 3003. Optionally, the SRS resource configuration information may include specific SRS antenna port information, such as antenna ports 3000 and 3003. The network device indicates the SRS resource in Downlink Control Information (DCI), and the terminal device obtains the number of SRS antenna ports of the indicated SRS resource according to the SRS resource indication, and determines the number of antenna ports of the PUSCH. Generally, in codebook-based transmission, the number of antenna ports of the PUSCH is equal to the number of SRS antenna ports of the indicated SRS resource. The number of antenna ports and the precoding indication information domain have a corresponding relation. The terminal equipment determines the indicated precoding matrix according to the number of the antenna ports and the precoding indication information field (precoding information and number of layers) in the DCI. The method specifically comprises the steps that the terminal equipment determines which table to search according to the port number, and determines which pre-coding matrix (index) in the table according to the value of the pre-coding indication information field of the DCI, so that the corresponding pre-coding matrix is determined. And, the rank of the uplink is also indicated in the precoding moment indication information field. The uplink rank represents the number of independent data streams of uplink data, and is related to the antenna correlation of the channel, and the higher the antenna correlation of the channel is, the smaller the rank is, and conversely, the lower the antenna correlation of the channel is, the higher the rank is.

Further, a precoding information and number of layers (DCI) field is used to indicate precoding matrix information and uplink transmission layers (i.e., rank).

When the weight information refers to a precoder or a spatial transmission filter, etc., the terminal device obtains the following procedures: the terminal device may send at least one SRS resource according to the configuration of the network device, where one SRS resource corresponds to one weight information (that is, there is a correspondence between the SRS resource and the weight information), and each SRS resource may include 1 SRS antenna port, and send the SRS resource by using the weight information. After the network device receives at least one SRS resource, the network device may perform measurement, the network device schedules the SRS resource considered by the network device to be better for the terminal device, and the network device indicates SRS resource indication information to the terminal device, where the indication information may be carried by a high layer signaling or a physical layer signaling, for example, by DCI. And the terminal equipment performs weighting (or precoding, beam forming and the like) on the PUSCH by using the weight information corresponding to the SRS resource according to the SRS resource indication indicated by the network equipment.

The relationship between the weight information and the logical antenna and the physical antenna is as follows: different physical antennas may correspond to the same logical antenna, but channels of the different physical antennas may be different, so that suitable weight information measured by the network device may be different. Therefore, it can be considered that the weight information indicated by the network device and the transmitting antenna indicated by the network device to the terminal device have a corresponding relationship. Often, the network device may measure and determine the weight information corresponding to the uplink transmission data based on the channel experienced by the uplink detection signal, and the channels of the uplink detection signals sent by different antennas are different, so that the network device may measure and determine different weight information corresponding to different physical antennas. And weight information, such as a precoding matrix, typically weights the logical antennas. Precoders, spatial transmission filters, etc., are weights to the antennas, and/or, logical antennas.

Use of SRS resource(s): the usage of the SRS resource (group) corresponds to the transmission characteristics of the SRS resource (group), and the like. If the configuration is used for beam management, at least two of the SRS resource groups may be configured to use different transmit beams (i.e. different spatial transmission filters) or different receive beams (i.e. different receive spatial filtering, or receive non-co-location); when the configured usage is SRS antenna switching, at least two resources in the SRS resource group are switched and transmitted on different antennas.

The two antenna ports have a quasi co-located (QCL) relationship, which means that the channel large-scale parameter of one antenna port can be inferred by the channel large-scale parameter obtained by the other antenna port. The large-scale parameters may include one or more of average gain (average gain), average delay (average delay), delay spread (delay spread), Doppler shift (Doppler shift), Doppler spread (Doppler spread), spatial parameters (spatial parameters, or spatial Rx parameters).

The spatial parameter may include one or more of an angle of arrival (AOA), a main angle of arrival (dominant AOA), an average angle of arrival (average AOA), an angle of departure (AOD), a channel correlation matrix, a power angle spread spectrum of the angle of arrival, an average angle of departure (average AOD), a power angle spread spectrum of the angle of departure, a transmit channel correlation, a receive channel correlation, a transmit beamforming, a receive beamforming, a spatial channel correlation, a spatial filter, or a spatial filtering parameter, or a spatial receiving parameter, or weight information.

The following describes embodiments of the present application in detail with reference to the drawings.

It should be understood that the technical solution of the present application may be applied to a wireless communication system, for example, the communication system 100 shown in fig. 1, and the communication system may include at least one network device and at least one terminal device, and the network device and the terminal device may communicate through a wireless air interface. For example, the network devices in the communication system may correspond to network device 102 and network device 106 shown in fig. 1, and the terminal devices may correspond to terminal device 104 shown in fig. 1.

It should also be understood that, in the embodiment of the present application, for convenience of understanding, the technical solution is described by taking the PUSCH as an example, but this should not limit the present application at all, and the method provided in the embodiment of the present application is not only applicable to transmission of the PUSCH, but also applicable to transmission of other uplink data channels/signals. In addition, the present application also does not limit the reference signal for performing channel measurement, and the reference signal may be a demodulation reference signal, a phase noise reference signal, or another reference signal for implementing the same or similar functions.

In the following, without loss of generality, the embodiments of the present application are described in detail by taking an interaction process between a terminal device and a network device as an example, where the terminal device may be a terminal device in a wireless communication system and having a wireless connection relationship with the network device. It is understood that the network device may transmit the reference signal based on the same technical scheme with a plurality of terminal devices having a wireless connection relationship in the wireless communication system. This is not a limitation of the present application.

Fig. 2 is a schematic flow chart of a communication method 200 provided by an embodiment of the present application, shown from the perspective of device interaction. As shown in fig. 2, the method 200 may include:

s210, the network device sends reference signal indication information to the terminal device, and the terminal device receives the reference signal indication information sent by the network device, where the reference signal indication information is used to indicate a first reference signal resource and/or a first reference signal resource group, where the first reference signal resource has a corresponding relationship with a first antenna of the terminal device, and the first reference signal resource group has a corresponding relationship with the first antenna.

In the present application, the corresponding relationship may be embodied by one or more items in a table, a character string, a formula, or a function, which is not limited herein.

Specifically, the network device schedules uplink data, and may send reference signal indication information to the terminal device, where the reference signal indication information includes a first reference signal resource and/or a first reference signal resource group, where the first reference signal resource has a correspondence relationship with a first antenna, and the first reference signal resource group has a correspondence relationship with the first antenna.

According to the communication method, the corresponding relation between the reference signal resources and the antennas is indicated through the reference signal indication information, so that the realization of the antenna selection function is supported, and the performance of the system is improved by utilizing the difference of channel states.

Optionally, the first reference signal resource group is an SRS resource group.

The SRS resource may be understood as a resource for transmitting a sounding reference signal. By way of example and not limitation, SRS resources may include at least one of: the resource identifier, the frequency domain resource, the time domain resource, the code domain resource, and the spatial domain resource may include at least one of: sequence, cyclic shift, Orthogonal Cover Code (OCC). The spatial domain resources may include at least one of antenna ports, weight information, and the like.

It should be understood that the first antenna may be one or more antennas.

It should also be understood that the first antenna of the embodiments of the present application may also be referred to as a first antenna group, which includes one or more antennas.

Optionally, the network device may perform channel measurement, and the network device may determine the reference signal indication information according to a result of the channel measurement, where the reference signal indication information includes the first reference signal resource and/or the first reference signal resource group.

Optionally, the reference signal indication information may also be used to indicate antenna port information (e.g., the number of antenna ports) for transmitting uplink data.

Optionally, the reference signal indication information includes one or more of indication information of at least one reference signal resource group, indication information of the at least one reference signal resource, or indication information of an antenna port corresponding to the at least one reference signal resource.

Optionally, when the reference signal indication information includes indication information of at least one reference signal resource group, indication information of the at least one reference signal resource, or at least two kinds of indication information in indication information of an antenna port corresponding to the at least one reference signal resource, the at least two kinds of indication information are indicated according to joint coding, or the at least two kinds of indication information are indicated according to separate coding.

For example, the at least two indication information are jointly coded indications. The reference signal indication information may be carried in an indication field, which may be interpreted as at least one index, and one of the at least one index may indicate (or correspond to) the at least two kinds of indication information.

For another example, the at least two types of indication information are any two types of indication information, and the two types of indication information are respectively indicated by encoding. The reference signal indication information may be carried in an indication field, which may be interpreted as at least two indexes, any two indexes of the at least two indexes respectively indicating (or corresponding to) the two kinds of indication information.

For another example, the at least two types of indication information are any two types of indication information, and the two types of indication information are respectively indicated by encoding. The reference signal indication information includes a plurality of indication fields, which can be interpreted as a plurality of indexes, any two indexes of the plurality of indexes respectively indicate (or correspond to) the two kinds of indication information. It should be understood that any two indexes may correspond to different indication fields, and may also correspond to the same indication field.

Optionally, the reference signal indication information may indicate a first reference signal resource, where the first reference signal resource is one of at least one reference signal resource group, and the first reference signal resource has a corresponding relationship with the first antenna.

Fig. 3 shows a schematic diagram of a transmitting antenna and a receiving antenna of a terminal device, and as shown in fig. 3, the terminal device may be equipped with 2 rf channels after its baseband processing module to support a dual-transmission function. And the terminal equipment has 4 antenna elements and can carry out simultaneous reception. After the radio frequency channels, each radio frequency channel is provided with a switch module, by switching the switches, the upper radio frequency channel can be selected to switch between the antennas 0 and 1 for transmission, and the lower radio frequency channel can be selected to switch between the antennas 2 and 3 for transmission.

Alternatively, the SRS resource information may be indicated by information bits.

Assuming that there are N reference signal resource groups (N is a positive integer), which are resource group #1, resource group #2, …, and resource group # N, respectively, the number of resources in each reference signal resource group may be the same or different (assuming that there are N reference signal resources in each reference signal resource group, N is a positive integer), for example, resource group #1 includes resource #1, resource #2, …, and resource # N, and the reference signal resources may be indicated by information bits X, and table 1 shows an information bit indication manner, as shown in table 1.

Table 1 information bit indication scheme

It should be understood that the resource group in the above table may be a reference signal resource group, and the resource may be a reference signal resource, which is not described in detail below.

Alternatively, assuming that there is one reference signal resource group, where there are n reference signal resources, the reference signal resources may be indicated by the information bits X, as shown in table 2, another information bit indication manner is shown as shown in table 2. The resource group may not be indicated at this time or indicated by higher layer signaling. The terminal device should understand the set of SRS resources in which the indicated SRS resources are located.

Table 2 information bit indication scheme

X	Meaning of information bits
		Value 0	Resource #1
Value 1	Resource #2
		…	…
Value n-1	Resource # n

Table 3 shows a correspondence relationship between reference signal resources and transmission antennas, assuming that there is a resource group including resource #1, resource #2, resource #3, and resource #4, where resource #1, resource #2, resource #3, and resource #4 correspond to antenna (group) #1, antenna (group) #2, antenna (group) #3, and antenna (group) #4, respectively, as shown in table 3.

Table 3 correspondence of reference signal resources and transmitting antennas

The self-determination of the terminal equipment comprises the self-determination of the terminal equipment according to the number of the SRS resources configured in the SRS resource group. When the number of the SRS resources in the SRS resource group is more than 1, the terminal equipment maps at least two SRS resources in one SRS resource group to incompletely same antennas for transmission.

It should be understood that the first reference signal resource and the first antenna have a corresponding relationship, which can be understood as that resource #1 corresponds to antenna (group) #1, resource #2 corresponds to antenna (group) #2, and other corresponding relationships in table 3.

It should be understood that the table is an example, and the specific number of antenna ports per resource is not limited in this application, and may be 2 ports, or 1port, etc. The antenna corresponding to each resource is not limited, and for example, the resource #1 corresponds to the antennas 0 and 2 in the example, and may also correspond to other antennas.

For example, the reference signal indication information indicates a first reference signal resource (e.g., resource #1 in table 3 above), resource #1 in the resource group #1 corresponds to antennas 0 and 2 in fig. 3, and after receiving the reference signal indication information, the terminal device may transmit uplink data to the network device through antennas 0 and 2; or may send uplink data to the network device through the antenna 0; uplink data may also be transmitted to the network device via antenna 2.

Further, the corresponding relationship between the first reference signal resource and the first antenna may be embodied in a table manner, or embodied in a function of a parameter, where the function of the parameter may refer to a function between an SRS antenna port and a PUSCH antenna port, or a function between an SRS antenna port and a user port, or a function between a PUSCH antenna port and a user port. The mapping relation between the first reference signal resource and the antenna is expressed in several ways.

It should be understood that the present embodiment may be designed for the terminal device with the antenna switching function, and the present embodiment is applicable to the case where the transceiving antenna is asymmetric, and such a structure in fig. 3 may also be referred to as a 2T4R capability, and further, there are 1T2R, 1T4R, 2T8R, and the like, and the present application is not limited thereto.

It should also be understood that the above information bit indication manner and the corresponding relationship between the reference signal resource and the transmitting antenna can also be as shown in table 4.

Table 4 information bit indication mode and corresponding relation between reference signal resource and transmitting antenna

It should be understood that the above listed information bit indication modes, the correspondence between the reference signal resources and the transmitting antennas are only exemplary illustrations, and should not limit the present application in any way.

Optionally, the reference signal indication information may indicate a first reference signal resource group, where the first reference signal resource group is one of at least one reference signal resource group, and the first reference signal resource group has a corresponding relationship with the first antenna.

Alternatively, the set of reference signal resources may be indicated by information bits X, and table 5 shows an indication manner of the information bits, as shown in table 5.

TABLE 5 information bit indication scheme

X	Meaning of information bits
		Value 0	Resource group #1
Value 1	Resource group #2
		…	…
Value N-1	Resource group # N

Table 6 shows a correspondence relationship between reference signal resource groups and transmission antennas, as shown in table 6.

Table 6 correspondence between reference signal resource groups and transmission antennas

For example, the reference signal indication information indicates a first reference signal resource group (e.g., resource group #1), the resource group #1 corresponds to antennas 0 and 2 in fig. 3, and after receiving the reference signal indication information, the terminal device may transmit uplink data to the network device through antennas 0 and 2; or may send uplink data to the network device through the antenna 0; uplink data may also be transmitted to the network device via antenna 2. It should be understood that the above-mentioned information bit indication manner and the corresponding relationship between the reference signal resource group and the transmitting antenna can also be as shown in table 7.

Table 7 information bit indication method and correspondence between reference signal resource group and transmission antenna

It should be understood that, taking resource group #1 as an example, the resource group #1 may include one or more resources, and when the resource group #1 includes only one reference signal resource, the corresponding transmit antennas of the resource are antennas 0 and 2; alternatively, when the resource group #1 includes a plurality of resources, the plurality of resources may correspond to the same transmit antenna, such as antennas 0 and 2.

It should also be understood that when the resource group #1 includes multiple resources, the multiple resources may also correspond to different transmit antennas, for example, the resource group #1 includes resource #1 and resource #2, the resource #1 corresponds to antennas 0 and 2, and the resource #2 corresponds to antennas 1 and 3, then after the terminal device receives the reference signal indication information, the terminal device may determine, based on other information, to transmit uplink data on at least some of antennas 0, 1, 2 and 3, or to transmit uplink data on antennas 0 and 2 corresponding to the resource #1, or to transmit uplink data on antennas 1 and 3 corresponding to the resource # 2. For example, the terminal device may determine to transmit uplink data on antennas 0 and 2 corresponding to the resource #1 or transmit uplink data on antennas 1 and 3 corresponding to the resource #2 according to other information in the DCI.

It should be noted that, in the embodiment of the present application, it is not limited whether the number of antennas corresponding to each reference signal resource group is the same or not, that is, the number of antennas corresponding to each reference signal resource group may be the same, partially the same, or all the same.

Alternatively, the reference signal indication information may indicate the first reference signal resource group and the first reference signal resource.

It should be understood that the manner in which the reference signal indication information indicates the first reference signal resource group and the first reference signal resource may be as indicated in table 1, or may also be through other manners of indication, for example, the terminal device may determine the first reference signal resource group of the at least one reference signal resource group through the reference signal indication information, and then determine the first reference signal resource in the at least one reference signal resource group included in the first reference signal resource group.

Optionally, the network device indicates a correspondence between the reference signal resource and the antenna through the first reference resource group and the first reference resource, the identifier of the SRS resource is independent of the resource group, and the correspondence between the reference signal resource and the antenna may be as shown in table 8.

Table 8 correspondence between reference signal resources and antennas

Wherein, the resource in the plurality of resource groups has a distinguishable identification, so that the SRS resource can be indicated by the information bit to determine the corresponding antenna.

Optionally, the reference signal indication information may also be used to indicate weight information for sending uplink data.

Optionally, the weight information includes at least one of precoding matrix information, a precoder, spatial beamforming, or a spatial transmission filter.

Optionally, the precoding matrix refers to a weight in a mathematical matrix form used by the transmitting end for precoding. The set of at least one precoding matrix may be a codebook, and the precoding matrix in the codebook may be determined by an index of the precoding matrix. The index may be composed of one or more indexes. The precoding matrix information may be embodied as an index of the precoding matrix.

Illustratively, the weight information includes precoding matrix information and a spatial transmission filter. That is, the reference signal indication information indicates a spatial transmission filter, which can be understood as analog weight beam information. The weight information further includes precoding matrix information, that is, the reference signal indication information further indicates information related to a precoding matrix, such as the number of antenna ports of the precoding matrix.

For example, the weight information may include precoding matrix information of the SRS (it may be determined by referring to the signal indication information that the antenna port transmitting the uplink data is P ═ 1, 2, 4, so as to know which table in the corresponding protocol to interpret the indication field of the precoding matrix).

S220, the terminal device sends uplink data to the network device according to the reference signal indication information, and the network device receives the uplink data sent by the terminal device according to the reference signal indication information.

Optionally, the terminal device sends uplink data to be sent to at least part of the antennas in the first antenna.

Specifically, the baseband chip in the terminal device generates uplink data to be transmitted, and outputs the uplink data to be transmitted to at least part of the antennas in the first antennas.

Optionally, the power of the antennas may also be controlled in a power control manner, and uplink data is sent to the network device according to the first power through at least part of the antennas in the first antenna.

It is to be understood that the first power may be a non-zero power, which may index a power other than 0; or, the first power may refer to a power satisfying a certain power index, and the power satisfying the certain power index may be represented as a power greater than or equal to the index power, which is considered as a non-zero power; or, the first power is power for transmitting uplink data. The power for transmitting uplink data may be a power calculated by the terminal device according to a requirement of power control. The requirement for power control may be embodied as a formula, table, etc. for power control.

For example, the baseband chip or other chips or components of the terminal device control the power of at least part of the antennas in the first antenna to be 0, and output the generated uplink data to be transmitted to the first antenna, and because the power of at least part of the antennas in the first antenna is 0, the uplink data to be transmitted is transmitted to the network device through the other antennas. Or the baseband chip controls the transmission power of at least part of the first antennas to be the functional power for transmitting the uplink data, and controls the antenna power which is not expected to map the uplink data to be zero power, so that the uplink data is only transmitted on at least part of the first antennas with non-zero power.

It should be understood that the uplink data may be jointly received by multiple network devices, for example, a first network device controls a transmitting antenna of a terminal device, one or more second network devices may also receive uplink data transmitted by the terminal device, the first network device and the second network device may be the same network device or different network devices, and the uplink data is transmitted through at least a part of antennas in a first antenna of the terminal device.

It should also be understood that the first network device and the second network device are different network devices, the first network device and the second network device are in different geographical locations, or the first network device and the second network device are separate physical devices (i.e., the first network device and the second network device are not integrated in the same device).

According to the communication method, the antenna information for sending the PUSCH is indicated in the reference signal indication information, so that the fact that a channel corresponding to an antenna for sending uplink data by the end equipment is possibly consistent with a channel measurement result used by the network equipment for scheduling the PUSCH is guaranteed, performance loss is avoided, and performance gain brought by transmission diversity is improved.

Optionally, the communication method 200 may further include:

s201, the network device sends resource configuration information to the terminal device, the terminal device receives the resource configuration information sent by the network device, the resource configuration information includes at least one reference signal resource group, the at least one reference signal resource group includes at least one reference signal resource, the at least one reference signal resource group includes the first reference signal resource group, and the at least one reference signal resource includes the first reference signal resource.

It should be understood that the resource configuration information may be associated with the reference signal indication information, for example, the resource configuration information includes at least one reference signal resource group, the at least one reference signal resource group includes at least one reference signal resource, the at least one reference signal resource group includes the first reference signal resource group, the at least one reference signal resource includes the first reference signal resource, and the correspondence between at least one reference signal resource and at least one antenna in the resource configuration information may be as shown in tables 1 to 8, or may be configured to the terminal device in other manners, which is not limited in this application.

It should also be understood that the correspondence between the at least one reference signal resource/the at least one reference signal resource group and the at least one antenna in the resource configuration information may be determined by one or more of predefined rules, explicit indications, implicit indications, or self-determination.

The self-determination of the terminal equipment comprises that the terminal equipment can self-determine antennas corresponding to the SRS resources according to the number of the SRS resources configured in the SRS resource group. When the number of the SRS resources in the SRS resource group is more than 1, the terminal equipment maps at least two SRS resources in one SRS resource group to incompletely same antennas for transmission.

Optionally, the communication method 200 may further include:

s202, the terminal device sends a reference signal to the network device on at least one reference signal resource, and the network device receives the reference signal sent by the terminal device on the at least one reference signal resource.

It should be understood that, in the embodiment of the present application, there is no actual sequence between S210-S220 and S201-S202, and there may be no actual connection between S210-S220 and S201-S202.

Optionally, the resource configuration information is carried in a higher layer signaling.

The higher layer signaling may include one or more of a Radio Resource Control (RRC) message and a Medium Access Control (MAC) -Control Element (CE), for example.

It should be understood that the above-listed high layer signaling is only an exemplary illustration and should not constitute any limitation to the present application. The higher layer signaling may also include other signaling from higher layers, which are not listed here for brevity. For the sake of brevity, the description of the related higher layer signaling is omitted below when it is referred to.

Optionally, the at least one reference signal resource has a corresponding relationship with at least one antenna.

The following description will take the reference signal as an SRS as an example.

In S202, the terminal device may transmit SRS on a jth SRS resource in an ith SRS resource group by using a kth antenna (group) corresponding to the jth SRS resource, where i, j, and k are positive integers.

Here, the "correspondence" relationship of the kth antenna (group) corresponding to the jth SRS resource may be understood as: the terminal device may transmit SRS on the jth SRS resource using the kth antenna (group).

It should be understood that the kth antenna(s) includes one or more antennas.

In this embodiment, the terminal device may determine the kth antenna (group) corresponding to the jth SRS resource in any one of the following manners:

in the first mode, the terminal device may determine the kth antenna (group) corresponding to the jth SRS resource according to a predefined rule. For example, the predefined rules may be embodied in the form of tables, functions, and the like. For example, the relationship between the jth SRS resource and the corresponding antenna (group) is related to the resource identifier of the SRS resource, or the sequential order of the resource identifiers of the SRS resources.

Optionally, the SRS antenna ports may have a one-to-one correspondence with the antennas, for example, the number of the SRS antenna ports of the SRS resource is consistent with the number of the antennas.

In a second mode, the terminal device may receive antenna configuration information sent by the network device, and determine a kth antenna (group) corresponding to the jth SRS resource according to the antenna configuration information. Optionally, the network device may configure antenna information corresponding to the SRS resource through a high-level signaling, where the antenna information corresponding to the SRS resource is embodied as one field of the configuration information of the SRS resource.

And thirdly, the terminal equipment determines the kth antenna (group) corresponding to the jth SRS resource.

Further, the resource and the corresponding antenna may be considered as quasi co-located, and the network device may configure, for the terminal device, an SRS antenna port of the resource and the quasi co-located antenna. The network device may configure the jth SRS resource to have a quasi-co-location relationship with the kth antenna (group).

The following description will be given by taking 2T4R as an example.

For the terminal device of 2T4R, the network device configures an SRS resource group, where the SRS resource group includes 2 SRS resources, each SRS resource is a 2-port SRS resource, the 2 SRS resources should be transmitted by using different antennas, and further, an antenna set that transmits the two SRS resources is a non-overlapping antenna set. The specific SRS resource and the antenna (group) on which the SRS resource is transmitted may be predefined, configured by the network device, or implemented by the terminal device.

For example, two SRS resources are defined, the smaller resource ID is transmitted on one antenna set, e.g., 0, 2, and the larger resource ID is transmitted on the other antenna set, e.g., 1, 3. Thus, the network device can instruct the terminal device to transmit the SRS resource (group) to measure the channels corresponding to the antennas.

Alternatively, the network device and the terminal device may determine the one-to-one correspondence relationship between the jth reference signal resource and the kth antenna (group) based on a predefined rule. Optionally, the network device and the terminal device may determine the one-to-one correspondence relationship between the j reference signal resources and the kth antenna (group) according to the identifiers of the antennas and the identifier of the reference signal resource.

In one possible design, the one-to-one correspondence relationship between the jth SRS resource and the kth antenna (group) may be determined sequentially according to the order of the small identifiers of the antennas and the order of the small identifiers of the SRS resources.

Table 9 below gives, for the antenna configuration of 2T4R, an exemplary correspondence between the identification of possible SRS resources (srsrsresource Indicator, SRI) and the identification of antenna groups. In the correspondence shown in table 9 below, { SRI0, SRI1, SRI2, SRI3} may be the identities of four SRS resources, and satisfy SRI0< SRI1< SRI2< SRI 3.

As shown in table 9, a one-to-one correspondence relationship between the jth SRS resource and the kth antenna (group) may be established according to the identifier of the antenna (group) or the identifier of the SRS resource. For example, the SRIs 0 are respectively associated with the first antenna (group) in a one-to-one correspondence. When a certain SRS resource is used, the corresponding antenna group or antenna can be determined.

TABLE 9

It should be understood that the correspondence between the above listed SRS resource identifications and antenna (group) is only an exemplary one and should not constitute any limitation to the present application, for example, { SRI0, SRI1, SRI2, SRI3} may also satisfy SRI0 > SRI1 > SRI2 > SRI 3. It should also be understood that the correspondence relationship between SRS resources and antennas or antenna groups is indicated by a table, which is only one possible implementation manner and should not constitute any limitation to the present application. The present application is not particularly limited to the implementation manner of indicating the correspondence between SRS resources and antennas or antenna groups.

It should be noted that, for ease of understanding and description, the present application takes the transmission of a reference signal as an example to describe a specific process of transmitting and receiving the reference signal. This should not be construed as limiting the application in any way. Optionally, the number of times that the terminal device transmits the reference signal may be determined according to any one of the following: the ratio of the number of downlink antennas to the number of uplink antennas and the ratio of the number of uplink antennas to the number of uplink antennas that can transmit simultaneously. For example, for a terminal device with an antenna configured as aTbR, one antenna switch can be completed by a/b times of reference signal transmission. Wherein a and b are positive integers, and when a/b is not an integer, the integer can be rounded up, rounded down or rounded down, which is not limited in the application.

Optionally, the antenna for the terminal device to send uplink data includes at least part of the first antenna and a second antenna, and the communication method 200 further includes:

the network device sends first indication information to the terminal device, the terminal device receives the first indication information sent by the network device, and the first indication information is used for indicating the second antenna.

It should be understood that the second antenna includes one or more antennas.

It is further understood that the second antenna can also be obtained by one or more of predefined, explicit indication of other indication information, or implicit indication of other indication information.

For example, a part of antennas transmitting uplink data may be indicated by the reference signal indication information, and the second antenna (another part of antennas transmitting uplink data) may be indicated by one or more of the following indications: a field in the DCI, a field in a media access control layer control element, MAC CE, or a Cyclic Redundancy Check (CRC) mask of the DCI.

Optionally, at least part of the antennas for transmitting the uplink data is the same as at least part of the antennas for transmitting the at least one reference signal.

Optionally, at least part of the antennas for transmitting the uplink data and at least part of the antennas for transmitting the at least one reference signal may also be embodied as: and the antenna port for sending the uplink data and the reference signal antenna port for sending the reference signal are quasi co-located, or the antenna port for sending the uplink data and the user port corresponding to the reference signal are quasi co-located. Further, a reference signal antenna port of the reference signal is quasi co-located with a user port corresponding to the reference signal.

Optionally, the network device configures at least one of a reference signal switching function or an uplink transmission function for at least a part of the at least one reference signal resource group.

In particular, the network device may configure at least one SRS resource for the terminal device, which may form one or more resource groups. The network device may configure the usage of the SRS resource group in RRC signaling, including one or more of beam management (beamManagement), codebook based transmission (codebook), Non-codebook based transmission (Non-codebook), and antenna switching (antenna switching) functions. Alternatively, if codebook or Non-codebook is defined for uplink transmission (i.e., no distinction is made in the in-use indication), the usage of the SRS resource group includes one or more of beam management, uplink transmission (codebook/Non-codebook), or antenna switching.

For example, the network device may configure a certain set of SRS resources as SRS switching and uplink transmission, where the uplink transmission includes codebook-based transmission and non-codebook-based transmission; alternatively, the network device may configure a certain set of SRS resources as SRS switching and codebook-based transmission; alternatively, the network device may configure a certain set of SRS resources as a set of SRS resources for SRS switching and non-codebook based transmission. Or, the network device may configure a certain SRS resource group as uplink transmission, where the uplink transmission includes codebook-based transmission or non-codebook-based transmission, and combines with the antenna selection enabling information, and the SRS resource group for uplink transmission has a functional feature of antenna switching. The functional characteristics of the antenna switching may include that the transmission antennas of at least two SRS resources within the SRS resource group are at least partially different. The antenna selection enabling information may be configured by the base station through higher layer signaling.

Optionally, the at least one reference signal resource group includes a first set of reference signal resource groups having a reference signal switching function and a second set of reference signal resource groups having an uplink transmission function, and the first reference signal resource group is associated with the second reference signal resource group.

In particular, the associating may be embodied as at least one reference signal resource in the at least one set of reference signal resource groups in the first set of reference signal resource groups having a relation with at least one reference signal resource in the at least one set of reference signal resource groups in the second set of reference signal resource groups, in particular having the same resource identity, or the resource identities having a correspondence.

For example, the network device allows the SRS resource group configured as the SRS switching function to have a corresponding relationship with the SRS resource group indicated by the uplink transmission, specifically, the SRS resources in the two SRS resource groups have a relationship, for example, have the same resource ID, or have a specific mapping relationship. When the SRS resource in the SRS switching function corresponds to the SRS resource for the uplink transmission instruction, the SRS resource is allocated to the same transmission antenna. Further, when one of the SRS resource groups is configured or reconfigured, the other SRS resource group updates the resource therein correspondingly, for example, the corresponding resource may be updated by an antenna corresponding to the updated resource.

According to the communication method, the network equipment can receive the reference signals sent by the specific antenna by establishing the association relation among the reference signal resource groups, and the uplink data sending antenna is indicated through the reference signal indication information, so that the effect of controlling the uplink data sending antenna by using the reference signal group is achieved, and the configuration complexity and the configuration overhead can be reduced.

Optionally, the at least one reference signal resource group may be embodied in an implicit manner for uplink antenna selection. For example, the network device configures an SRS antenna port of an SRS resource in the at least one reference signal resource group to be quasi-co-located with an antenna port of a PUSCH carrying uplink data. So that the terminal device can know that the at least one reference signal resource group is for indicating transmit antenna information of the PUSCH.

According to the communication method, the reference signal resources are used for antenna selection of uplink data, so that the reference signals can be sent on different antennas, the network equipment can obtain channel information of corresponding antennas, and the network can indicate the antennas for sending the uplink data through the reference signal indication information, so that the functions of the reference signal resources are clear, and the system can flexibly apply the functions of the reference signals.

Optionally, at least a part of the at least one reference signal resource group has an antenna selection function for uplink data; or, at least a part of the at least one reference signal resource has an antenna selection function for uplink data.

It should be understood that the resource configuration information configured by the network device includes a transmit antenna information indication; or, the reference signal resource configured by the network device has a corresponding relationship with the transmitting antenna, for example, the identifier of the reference signal resource corresponds to an increasing or decreasing order of the numbers of the transmitting antennas according to an increasing or decreasing order; alternatively, the reference signal antenna port of the reference signal resource has a quasi-co-location relationship with the transmit antenna (user port).

Further, when the uplink transmission scheme is codebook-based transmission, it may be considered that the SRS antenna port of the SRS resource and the antenna port of the PUSCH have a quasi-co-location relationship, and when the uplink transmission scheme is non-codebook-based transmission, it may be considered that the same or similar spatial transmission filter is applied to (the SRS antenna port of) the SRS resource and (the antenna port of) the PUSCH.

Specifically, when the network device configures the antenna selection function of uplink data, the network device is allowed to configure the SRS resource group for uplink transmission. Wherein the uplink transmission comprises one or more of a codebook-based transmission of an uplink data antenna selection, a codebook-based transmission, a non-codebook-based transmission of an uplink data antenna selection, or a non-codebook-based transmission.

The codebook-based transmission and the non-codebook-based transmission may refer to codebook-based transmission or non-codebook-based transmission that does not allow the terminal device to perform open-loop antenna selection, or codebook-based transmission or non-codebook-based transmission that allows the terminal device to perform open-loop antenna selection.

It should be understood that the above configurations may be limited to the premise that the network device allows the antenna selection function.

It should also be understood that one resource group for SRS switching includes at least one SRS resource, each SRS resource in one SRS resource group is applied to different antenna transmission, and each SRS resource includes an SRS port number related to the number of antennas supporting simultaneous transmission by the terminal device. In the non-codebook based transmission method, the number of SRS ports included in each SRS resource may be, for example, 1, regardless of the number of antennas transmitting simultaneously.

Optionally, the communication method further includes:

the terminal device sends the capability of the terminal device to the network device, and the network device receives the capability of the terminal device sent by the terminal device.

Optionally, the communication method further includes:

the network device sends indication information to the terminal device, the terminal device receives the indication information sent by the network device, and the indication information is used for indicating the terminal device to select an antenna.

Specifically, the terminal device may report the capability of the terminal device through a higher layer cell, where the capability of the terminal device includes a capability of whether to support antenna selection. Further, the capability of the terminal device further includes information related to an antenna structure of the terminal device, such as antenna grouping information, and the network device may obtain which antennas of the terminal device are capable of transmitting simultaneously and which antennas are incapable of transmitting simultaneously through the information related to the antenna structure of the terminal device.

The network device may further send indication information to the terminal device, where the indication information is used to indicate the terminal device to perform antenna selection, and through the indication information, the terminal device may obtain: whether to perform antenna selection, whether to perform closed-loop antenna selection, or whether to perform at least one of open-loop antenna selection.

It should be understood that the network device configures the antenna selection function as a separate signaling or as one of the uplink transmission modes, for example, the uplink transmission mode may include: one or more of a codebook-based transmission scheme, a non-codebook-based transmission scheme, a codebook-based transmission scheme with a day selection function, and the like.

The communication method according to the embodiment of the present application is described in detail above with reference to fig. 2 and 3. The communication device according to the embodiment of the present application is described in detail below with reference to fig. 4 to 6.

Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device can be applied to the system shown in fig. 1, and performs the functions of the terminal device in the above method embodiment. For ease of illustration, fig. 4 shows only the main components of the terminal device. As shown in fig. 4, the terminal device 40 includes a processor, a memory, a control circuit, an antenna, and an input-output means. The processor is mainly configured to process a communication protocol and communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device to perform the actions described in the foregoing method embodiments, such as sending uplink data according to the reference signal indication information. The memory is mainly used for storing software programs and data, for example, storing the corresponding relationship between the indication information and the combination information described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 4 shows only one memory and one processor for ease of illustration. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this embodiment of the present application.

As an alternative implementation manner, the processor may include a baseband processor and/or a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor in fig. 4 may integrate the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In the embodiment of the present application, an antenna and a control circuit having a transceiving function may be regarded as the transceiving unit 401 of the terminal device 40, for example, for supporting the terminal device to perform a receiving function and a transmitting function as described in part of fig. 2. The processor with processing functionality is considered to be the processing unit 402 of the terminal device 40. As shown in fig. 4, the terminal device 40 includes a transceiving unit 401 and a processing unit 402. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Optionally, a device for implementing a receiving function in the transceiver 401 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver 401 may be regarded as a sending unit, that is, the transceiver 401 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

The processor 402 is configured to execute the instructions stored in the memory to control the transceiver unit 401 to receive and/or transmit signals, so as to implement the functions of the terminal device in the above-described method embodiments. As an implementation manner, the function of the transceiving unit 401 may be considered to be implemented by a transceiving circuit or a dedicated chip for transceiving.

Fig. 5 is a schematic structural diagram of a network device provided in an embodiment of the present application, for example, a schematic structural diagram of a base station. As shown in fig. 5, the base station can be applied to the system shown in fig. 1, and performs the functions of the network device in the above method embodiment. The base station 50 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 501 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 502. The RRU 501, which may be referred to as a transceiver unit, transceiver circuitry, or transceiver, etc., may include at least one antenna 5011 and a radio frequency unit 5012. The RRU 501 is mainly used for transceiving radio frequency signals and converting the radio frequency signals and baseband signals, for example, for sending the reference signal indication information described in the above embodiments to a terminal device. The BBU 502 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 501 and the BBU 502 may be physically disposed together, or may be physically disposed separately, that is, distributed base stations.

The BBU 502 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing unit) 502 can be used to control the base station to execute the operation flow related to the network device in the above method embodiment.

In an example, the BBU 502 may be formed by one or more boards, and the boards may jointly support a radio access network (e.g., an LTE network) with a single access indication, or may respectively support radio access networks (e.g., LTE networks, 5G networks, or other networks) with different access schemes. The BBU 502 also includes a memory 5021 and a processor 5022, the memory 5021 being used to store necessary instructions and data. For example, the memory 5021 stores the correspondence between the codebook index and the precoding matrix in the above embodiment. The processor 5022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedures of the above method embodiments with respect to the network device. The memory 5021 and the processor 5022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits

Fig. 6 shows a schematic structural diagram of a communication device 600. The apparatus 600 may be used to implement the methods described in the above method embodiments, and reference may be made to the description of the above method embodiments. The communication apparatus 600 may be a chip, a network device (e.g., a base station), a terminal device or other network devices.

The communication device 600 includes one or more processors 601. The processor 601 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control a communication device (e.g., a base station, a terminal, or a chip), execute a software program, and process data of the software program. The communication device may include a transceiving unit to enable input (reception) and output (transmission) of signals. For example, the communication device may be a chip, and the transceiving unit may be an input and/or output circuit of the chip, or a communication interface. The chip can be used for a terminal or a base station or other network equipment. As another example, the communication device may be a terminal or a base station or other network equipment, and the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The communication apparatus 600 includes one or more processors 601, and the one or more processors 601 may implement the method of the network device or the terminal device in the embodiment shown in fig. 2.

In one possible design, the communication device 600 includes means (means) for generating reference signal indication information and means (means) for transmitting the reference signal indication information. The functions of generating the means for reference signal indication information and transmitting the means for reference signal indication information may be implemented by one or more processors. The reference signal indication information may be generated, for example, by one or more processors, and transmitted through a transceiver, or an interface of an input/output circuit, or chip. The reference signal indication information may be referred to the related description in the above method embodiments.

In one possible design, the communication device 600 includes means (means) for receiving reference signal indication information and means (means) for transmitting uplink data according to the reference signal indication information. For the reference signal indication information and how to send uplink data according to the reference signal indication information, reference may be made to the relevant description in the above method embodiment. The reference signal indication information may be received, for example, by a transceiver, or an interface of an input/output circuit, or a chip, and uplink data may be transmitted by one or more processors according to the reference signal indication information.

Optionally, the processor 601 may also implement other functions besides the method of the embodiment shown in fig. 2.

Alternatively, in one design, the processor 601 may execute instructions to cause the communication device 600 to perform the method described in the above method embodiment. The instructions may be stored in whole or in part within the processor, such as instructions 603, or in whole or in part in a memory 602 coupled to the processor, such as instructions 604, or collectively may cause the communication apparatus 600 to perform the method described in the above method embodiments, via instructions 603 and 604.

In yet another possible design, the communication apparatus 600 may also include a circuit, which may implement the functions of the network device or the terminal device in the foregoing method embodiments.

In yet another possible design, the communication device 600 may include one or more memories 602 having instructions 604 stored thereon, which are executable on the processor to cause the communication device 600 to perform the methods described in the above method embodiments. Optionally, the memory may further store data therein. Instructions and/or data may also be stored in the optional processor. For example, the one or more memories 602 may store the corresponding relations described in the above embodiments, or the related parameters or tables referred to in the above embodiments, and the like. The processor and the memory may be provided separately or may be integrated together.

In yet another possible design, the communication device 600 may further include a transceiver 605 and an antenna 606. The processor 601 may be referred to as a processing unit and controls a communication device (terminal or base station). The transceiver 605 may be referred to as a transceiver, a transceiving circuit, a transceiver, or the like, and is used for implementing transceiving functions of the communication device through the antenna 606.

The present application also provides a communication system comprising one or more of the aforementioned network devices, and one or more of the terminal devices.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The present application further provides a computer-readable medium, on which a computer program is stored, where the computer program is executed by a computer to implement the communication method in any of the above method embodiments.

The embodiment of the present application further provides a computer program product, and when executed by a computer, the computer program product implements the communication method described in any of the above method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to execute the communication method according to any one of the above method embodiments.

It should be understood that the processing device may be a chip, the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor, located external to the processor, or stand-alone.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Additionally, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that in the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented in hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a Digital Subscriber Line (DSL), or a wireless technology such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, the DSL, or the wireless technology such as infrared, radio, and microwave are included in the fixation of the medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy Disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

In short, the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (12)

1. A method of communication, comprising:

receiving reference signal indication information, wherein the reference signal indication information indicates a first reference signal resource and/or a first reference signal resource group;

the first reference signal resource group has a corresponding relation with a first antenna of a terminal device;

the method further comprises the following steps:

receiving resource configuration information, the resource configuration information including at least one reference signal resource group, the at least one reference signal resource group including at least one reference signal resource, the at least one reference signal resource group including the first reference signal resource group, the at least one reference signal resource including the first reference signal resource;

at least part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function;

the at least one set of reference signal resource groups includes a first set of reference signal resource groups having reference signal switching functionality and a second set of reference signal resource groups having uplink transmission functionality, the first set of reference signal resource groups being associated with the second set of reference signal resource groups.

2. The method of claim 1, further comprising:

transmitting uplink data to at least part of the first antennas; alternatively, the first and second electrodes may be,

transmitting uplink data through at least part of the first antennas; alternatively, the first and second electrodes may be,

controlling the power of at least part of the first antennas to be nonzero when the first antennas transmit uplink data, or to be greater than or equal to a first threshold; alternatively, the first and second electrodes may be,

and transmitting uplink data with non-zero power or one or more powers greater than or equal to a first threshold value through at least part of the first antennas.

3. A method of communication, comprising:

transmitting reference signal indication information, wherein the reference signal indication information indicates a first reference signal resource and/or a first reference resource group;

the first reference resource group and a first antenna of terminal equipment have a corresponding relation, and the first reference signal resource group and the first antenna have a corresponding relation;

the method further comprises the following steps:

transmitting resource configuration information, the resource configuration information comprising at least one set of reference signal resources, the at least one set of reference signal resources comprising the first set of reference signal resources;

at least part of the at least one reference signal resource group has at least one of a reference signal switching function or an uplink transmission function;

the at least one set of reference signal resource groups includes a first set of reference signal resource groups having reference signal switching functionality and a second set of reference signal resource groups having uplink transmission functionality, the first set of reference signal resource groups being associated with the second set of reference signal resource groups.

4. The method of claim 3, further comprising:

and receiving uplink data from at least part of the first antennas.

5. The method of any one of claims 1 to 4, wherein the reference signal indication information comprises at least one of indication information of at least one reference signal resource group, indication information of at least one reference signal resource, or antenna port indication information corresponding to at least one reference signal resource, wherein the at least one reference signal resource group comprises the first reference signal resource group, and the at least one reference signal resource comprises the first reference signal resource.

6. The method according to any one of claims 1 to 4, wherein the reference signal indication information is further used for indicating weight information for transmitting uplink data, and the weight information includes at least one of precoding matrix information, a precoder, spatial beamforming, or a spatial transmission filter.

7. The method according to claim 1 or 3, wherein the resource configuration information is carried in higher layer signaling.

8. The method of claim 1 or 3, wherein the at least one reference signal resource has a correspondence with at least one antenna.

9. The method of claim 1 or 3, wherein the uplink transmission function is a codebook-based uplink transmission function or a non-codebook-based uplink transmission function.

10. The method of claim 1 or 3, wherein at least some of the at least one set of reference signal resources have an antenna selection function for uplink data; or, at least part of the at least one reference signal resource has an antenna selection function for uplink data.

11. A communications apparatus, comprising: a processor coupled with a memory;

a memory for storing a computer program;

a processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any of claims 1-10.

12. A readable storage medium comprising a program or instructions for performing the method of any of claims 1-10 when the program or instructions are run on a computer.

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