Sounding reference signal resource configuration method and aparatus, and storage medium and program product

Abstract

A sounding reference signal resource configuration method and apparatus, and a storage medium and a program product. The method comprises: receiving a sounding reference signal (SRS) resource configuration, wherein the SRS resource configuration is at least used for configuring an SRS resource group or an SRS resource.

Description

Methods, apparatus, storage media and program products for configuring reference signal resources

[0001] This disclosure claims priority to Chinese patent application No. 202410579864.7, filed on May 10, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to methods, apparatus, storage media and program products for configuring reference signal resources. Background Technology

[0003] Currently, most terminals are configured with 1, 2, or 4 antennas. However, some terminals can perform uplink transmission through a 3-antenna port. But for such terminals, configuring sounding reference signal (SRS) resources is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] This disclosure provides a method, apparatus, storage medium, and program product for configuring reference signal resources, which can solve the problem of how to configure corresponding SRS resources for a terminal with three antenna ports.

[0005] On the one hand, a method for configuring sounding reference signal resources is provided, including: receiving sounding reference signal (SRS) resource configuration, wherein the SRS resource configuration is used to configure at least one SRS resource group or one SRS resource.

[0006] On the other hand, a method for configuring detection reference signal resources is provided, including: sending SRS resource configuration to a first node, wherein the SRS resource configuration is used to configure at least one SRS resource group or one SRS resource.

[0007] On another front, a detection reference signal resource configuration device is provided, comprising: a receiving unit; the receiving unit is configured to receive SRS resource configuration, wherein the SRS resource configuration is configured to configure at least one SRS resource group or one SRS resource.

[0008] On another front, a detection reference signal resource configuration device is provided, comprising: a transmitting unit; the transmitting unit is configured to transmit SRS resource configuration to a first node, wherein the SRS resource configuration is used to configure at least one SRS resource group or one SRS resource.

[0009] In another aspect, a communication node is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store a computer program; when the processor executes the computer program, it implements the detection reference signal resource configuration method described in any of the above embodiments.

[0010] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed by a processor, implement the detection reference signal resource configuration method described in any of the above embodiments.

[0011] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed by a processor, implement the detection reference signal resource configuration method described in any of the above embodiments.

[0012] This disclosure discloses an embodiment in which a first node can receive SRS resource configuration, which is used to configure at least one SRS resource group or at least one SRS resource. Thus, when the first node supports three transmit antenna ports, a second node can configure the aforementioned SRS resource group or SRS resource for the first node based on the SRS resource configuration, thereby solving the problem of how to configure appropriate SRS resources to terminals with three transmit antenna ports. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings.

[0014] Figure 1 is a system architecture diagram provided by some embodiments of this disclosure;

[0015] Figure 2 is a flowchart illustrating a method for configuring a detection reference signal resource according to some embodiments of this disclosure;

[0016] Figure 3 is an association rule diagram of a 4-1 mode SRS resource provided in some embodiments of this disclosure;

[0017] Figure 4 is an association rule diagram of an SRS resource in a 2+1 mode provided by some embodiments of this disclosure;

[0018] Figure 5 is an association rule diagram of an SRS resource in a 1+1+1 pattern provided by some embodiments of this disclosure;

[0019] Figure 6 is a schematic flowchart of a method for configuring detection reference signal resources according to some embodiments of this disclosure;

[0020] Figure 7 is a schematic diagram of the structure of a communication device provided in some embodiments of this disclosure;

[0021] Figure 8 is a schematic diagram of the structure of a communication device provided in some embodiments of this disclosure;

[0022] Figure 9 is a schematic diagram of the structure of a communication device provided in some embodiments of this disclosure. Detailed Implementation

[0023] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] It should be noted that in this disclosure, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts by way of example.

[0025] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0026] In the description of this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "more than one" means two or more.

[0027] SRS (Sound Reference Signal) is a probe reference signal configured in wireless communication for measuring the uplink channel. A terminal can transmit SRS to the base station via an antenna (or antenna port, transmit antenna port). After receiving the SRS, the base station can estimate the uplink channel between the base station and the terminal based on the SRS measurement, thereby obtaining the uplink channel information. In frequency division duplex systems, SRS can only measure uplink channel information. However, in time division duplex systems, due to the reciprocity of uplink and downlink channels, downlink channel information can be determined from uplink channel information, and SRS can also be used to determine downlink channel information.

[0028] SRS resources are various resources, such as time-frequency resources and periodic resources, configured by the base station for the terminal to transmit SRS. The base station can configure multiple SRS resources for the terminal by configuring an SRS resource set. Furthermore, when configuring an SRS resource set, the base station can assign different purposes to the SRS resource set.

[0029] For example, the purpose of an SRS resource set can be configured for antenna switching (also known as antenna rotation). Since the number of transmit antenna ports and receive antenna ports of a terminal may not be the same (e.g., the number of transmit antenna ports is less than the number of receive antenna ports), the terminal's transmit and receive capabilities will differ. Therefore, to determine the channel information between each antenna port and the base station, the terminal can transmit SRS multiple times using different antenna ports based on the SRS resources in the SRS resource set used for antenna switching. Correspondingly, the base station can receive multiple SRS transmissions from different antenna ports of the terminal, thereby determining the channel information for the entire channel between the base station and the terminal.

[0030] For example, when the SRS resource set is configured as a codebook, the terminal transmits SRS through the SRS resources in the SRS resource set. The base station can determine the channel information based on the received SRS, thereby selecting the most suitable codebook for the terminal. Subsequently, the base station can instruct the terminal to determine which precoding codebook to use for uplink transmission through the Transmit Precoding Matrix Indicator (TPMI) in the Downlink Control Information (DCI).

[0031] In addition, in related technologies, an SRS resource can support (or be associated with) one, two, or four antenna ports, so that the terminal can transmit SRS based on the antenna ports supported by the SRS resource.

[0032] Terminals can receive and transmit signals via antennas (also called antenna ports). Typically, terminals are configured with 1, 2, or 4 antennas. The terminal's transmit and receive antenna ports can satisfy xTyR, where xTyR refers to x transmit antennas (ports) and y receive antennas (ports), where x and y are positive integers. Common antenna configurations for terminals are 1T2R, 1T4R, and 2T4R. For example, with 2T4R, the terminal is configured with 4 antennas, and when transmitting signals, the terminal can use two of the 4 antennas to transmit.

[0033] However, considering factors such as hardware and cost, terminals generally do not have many antennas. Therefore, considering uplink performance, cost, and hardware limitations, using three antenna ports for uplink transmission is a feasible solution. However, for such terminals, how the base station configures the corresponding SRS resources for the three antenna ports is a pressing technical problem that needs to be solved.

[0034] To address this issue, this disclosure provides a method for configuring a detection reference signal resource (SRS). A first node can receive SRS resource configuration, which is used to configure at least one SRS resource group or at least one SRS resource. Thus, when the first node supports three transmit antenna ports, a second node can configure the aforementioned SRS resource group or SRS resource for the first node based on the SRS resource configuration, thereby solving the problem of how to configure appropriate SRS resources for terminals with three transmit antenna ports.

[0035] The probe reference signal resource configuration method provided in this disclosure can be applied to systems with various communication standards. For example, the probe reference signal resource configuration method provided in this disclosure can be applied to systems including, but not limited to, Long Term Evolution (LTE) systems, various versions based on LTE evolution, and 5th Generation Mobile Communication Technology (5G) systems. Furthermore, the probe reference signal resource configuration method provided in this disclosure can also be applied to future-oriented communication systems (such as 6G communication systems).

[0036] For example, the above-described method for configuring detection reference signal resources can be applied to the communication system shown in FIG1. ​​As shown in FIG1, the communication system includes: a first node 101 and a second node 102.

[0037] The first node 101 and the second node 102 are communicatively connected. The first node 101 can be a terminal, an IoT device, etc. The second node 102 can be a base station, etc. Figure 1 illustrates this using the example of the first node 101 being a terminal and the second node 102 being a base station.

[0038] In this embodiment of the disclosure, the second node 102 may send SRS resource configuration to the first node 101. The first node 101 may receive the SRS resource configuration, thereby determining that the second node 102 is an SRS resource group or SRS resource configured by the first node 101.

[0039] It should be noted that Figure 1 is only an exemplary framework diagram. The number of devices included in Figure 1 and the names of each device are not limited. In addition to the devices shown in Figure 1, the communication system may also include other devices, such as relay nodes.

[0040] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0041] The method for configuring detection reference signal resources provided in the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0042] The probe reference signal resource configuration method provided in this disclosure can be applied to the first node 101 in the communication system shown in FIG1. ​​FIG2 shows a schematic flowchart of a probe reference signal resource configuration method. As shown in FIG2, the probe reference signal resource configuration method includes the following S201 and S202.

[0043] S201, Receive SRS resource configuration.

[0044] Among them, SRS resource configuration is used to configure at least one SRS resource group or one SRS resource.

[0045] In some embodiments, the first node supports three transmit antenna ports. To meet the requirements of the first node, the SRS resource group configured in the SRS resource configuration can be a three-antenna port SRS resource group, and the SRS resource configured in the SRS resource configuration can be a three-antenna port SRS resource.

[0046] An SRS resource group comprises one or more SRS resources. The number of antenna ports in an SRS resource group is the sum of the number of antenna ports of all SRS resources within the group. For example, an SRS resource group comprising one SRS resource with a single antenna port and one SRS resource with two antenna ports constitutes a three-antenna-port SRS resource group. As another example, an SRS resource group comprising two SRS resources with single antenna ports constitutes a two-antenna-port SRS resource group.

[0047] When configuring SRS resources for terminals, base stations typically configure SRS resources suitable for terminals with one, two, or four transmit antenna ports, but not for terminals with three transmit antenna ports. Therefore, if the first node supports three transmit antenna ports (i.e., a three-antenna port terminal), the first node can receive SRS resource configurations from the second node. This allows it to configure an SRS resource group or SRS resources suitable for the first node's three-antenna ports, thus resolving the issue of how to configure corresponding SRS resources for terminals supporting three transmit antenna ports.

[0048] S202, The first node sends SRS based on the SRS resource configuration.

[0049] In one possible implementation, the SRS resources or SRS resource groups configured in the SRS resource configuration can also be used for antenna switching. After receiving the SRS resource configuration, the first node can transmit SRS through its three transmit antenna ports based on the configured three-antenna-port SRS resources (or resource groups). Subsequently, the first node can switch antenna ports and retransmit SRS. Thus, after multiple antenna port switching and SRS transmissions, all antenna ports of the first node have transmitted SRS. Since the second node can measure the channel information between the first and second nodes based on the received SRS, the second node, after receiving multiple SRS transmissions from the first node, can determine the channel information of the entire channel between itself and the first node based on these multiple SRS transmissions.

[0050] Next, we will introduce the SRS resources and SRS resource groups configured in the SRS resource configuration.

[0051] (1) SRS resource group with three antenna ports

[0052] In some embodiments, the three-antenna-port SRS resource group includes one of the following: a single-antenna-port SRS resource and a two-antenna-port SRS resource; or, three single-antenna-port SRS resources.

[0053] A single-antenna-port SRS resource refers to an SRS resource that supports (or is associated with) one antenna port of the first node. A dual-antenna-port SRS resource refers to an SRS resource that supports (or is associated with) two antenna ports of the first node. A three-antenna-port SRS resource group refers to an SRS resource group in which the SRS resources support (or are associated with) three antenna ports of the first node. Thus, the first node can transmit SRS on three transmit antenna ports based on a three-antenna-port SRS resource group.

[0054] In some embodiments, an SRS resource group satisfies at least one of the following: SRS resources in the same SRS resource group belong to the same SRS resource set or different SRS resource sets; SRS resources in different SRS resource groups belong to the same SRS resource set or different SRS resource sets; SRS resources in the same SRS resource group occupy the same frequency domain resources; SRS resources in different SRS resource groups occupy the same frequency domain resources; SRS resources in the same SRS resource group occupy the same time domain resources or different time domain resources; SRS resources in different SRS resource groups occupy the same time domain resources or different time domain resources.

[0055] In one possible implementation, since the second node configures SRS resources to the first node by configuring an SRS resource set, the second node can have multiple configuration methods when configuring the SRS resource group. Multiple SRS resources in an SRS resource group can belong to the same SRS resource set, or to completely different SRS resource sets, or to partially different SRS resource sets. For example, to configure a three-antenna-port SRS resource group, one of the following methods can be used: (Method 1) Configure one SRS resource set, which includes three single-antenna-port SRS resources; (Method 2) Configure two SRS resource sets, one of which includes a single-antenna-port SRS resource, and the other includes a two-antenna-port SRS resource; (Method 3) Configure three SRS resource sets, each including a single-antenna-port SRS resource. This disclosure is not limited to these methods.

[0056] Furthermore, the time-domain or frequency-domain resources occupied by SRS resources refer to the time-domain or frequency-domain resources occupied by the SRS when the first node transmits SRS based on that SRS resource. SRS resources in an SRS resource group may occupy different time-domain resources, meaning the occupied time-domain resource portions may differ or the occupied time-domain resources may be completely different. Optionally, time-domain resources include time-domain symbols and / or time slots.

[0057] (2) SRS resources of three antenna ports

[0058] In some embodiments, a three-antenna-port SRS resource is obtained by discarding one antenna port from a four-antenna-port SRS resource. When configuring a four-antenna-port SRS resource, the second node can discard one antenna port (or, by default, not associate it with the antenna port of the first node), thereby obtaining a three-antenna-port SRS resource. In this way, it is not necessary to add a new SRS resource type, but rather to use the design in the relevant protocol to ensure compatibility.

[0059] In some embodiments, a new SRS resource type may be added, namely, a three-antenna port SRS resource.

[0060] The above is an introduction to SRS resources with three antenna ports and SRS resource groups with three antenna ports. Since SRS resource configuration is used to configure at least one SRS resource with three antenna ports or one SRS resource group with three antenna ports, the configuration content of SRS resource configuration is related to the antenna transmit / receive capabilities of the first node. The following will introduce the configuration content of SRS resource configuration for first nodes with different types of antenna transmit / receive capabilities.

[0061] In some embodiments, the first node needs to report (or send) its antenna transceiver capabilities to the second node so that the second node can configure SRS resources based on the antenna transceiver capabilities of the first node. The antenna transceiver capabilities include any of the following: 3T3R, 3T4R, 3T6R, 3T8R.

[0062] Type 1: The first node is configured as 3T3R.

[0063] SRS resource configuration is used to configure a three-antenna-port SRS resource group or a three-antenna-port SRS resource.

[0064] Since the first node includes three antenna ports, and each SRS transmission is made through all three antenna ports, the first node only needs to transmit once for the second node to measure the channel information of the entire channel based on the SRS. Thus, because the antenna ports supported by the three-antenna-port SRS resource group or the three-antenna-port SRS resource correspond to the three different transmit antenna ports of the first node, the first node can transmit SRS through each of the three antenna ports separately based on the SRS resource configuration, thereby eliminating the need for retransmission.

[0065] In some embodiments, SRS resource configuration is used to configure up to three SRS resource sets or three SRS resources.

[0066] Type 2, the first node is configured as 3T4R:

[0067] SRS resource configuration is used to configure any of the following:

[0068] Two three-antenna-port SRS resource groups;

[0069] SRS resources with two three-antenna ports;

[0070] A three-antenna-port SRS resource group and a three-antenna-port SRS resource;

[0071] A three-antenna-port SRS resource group and a single-antenna-port SRS resource;

[0072] One SRS resource with three antenna ports and one SRS resource with one antenna port.

[0073] Since the first node includes four antenna ports, if the first node supports three transmit antenna ports, it can only transmit SRS through three antenna ports at a time. Therefore, the first node needs to transmit SRS at least twice to ensure that all transmit antenna ports transmit SRS. In this case, the antenna ports supported by the SRS resource correspond to at least the four transmit antenna ports of the first node.

[0074] As an example, SRS resource configuration can be used to configure any of the following: two SRS resource groups with three antenna ports; two SRS resources with three antenna ports; one SRS resource group with three antenna ports and one SRS resource with three antenna ports. In this case, the SRS resource configuration supports six antenna ports, which correspond to the four transmit antenna ports of the first node. Therefore, the transmit antenna ports of the first node corresponding to these six antenna ports partially overlap. For example, assuming the indices of the transmit antenna ports of the first node are 0, 1, 2, and 3, the SRS resource configuration is used to configure two SRS resource groups with three antenna ports. The three antenna ports supported by the first SRS resource group correspond to the three transmit antenna ports of the first node being 0, 1, and 2. The three antenna ports supported by the second SRS resource group must include 3 in the three transmit antenna ports of the first node, for example, 1, 2, and 3, where 1 and 2 are overlapping transmit antenna ports.

[0075] In addition, two three-antenna port SRS resources (or resource groups) occupy the same frequency domain resources and different time domain resources, or a three-antenna port SRS resource group and a three-antenna port SRS resource occupy the same frequency domain resources and different time domain resources, and multiple SRS resources within a three-antenna port SRS resource group occupy the same frequency domain resources and the same time domain resources.

[0076] As another example, SRS resource configuration can be used to configure either: a three-antenna-port SRS resource group and a single-antenna-port SRS resource; or a three-antenna-port SRS resource and a single-antenna-port SRS resource. In this case, the SRS resource configuration supports four antenna ports, which correspond to the four transmit antenna ports of the first node. For example, assuming the indices of the first node's transmit antenna ports are 0, 1, 2, and 3, when the SRS resource configuration is used to configure a three-antenna-port SRS resource and a single-antenna-port SRS resource, the three antenna ports supported by the three-antenna-port SRS resource correspond to the first node's transmit antenna ports 0, 1, and 2, and the one antenna port supported by the single-antenna-port SRS resource corresponds to the first node's transmit antenna port 3.

[0077] Furthermore, multiple SRS resources (or resource groups) of three-antenna ports occupy the same frequency domain resources and different time domain resources, and multiple SRS resources within a three-antenna port SRS resource group occupy the same frequency domain resources and the same time domain resources.

[0078] Type 3: The antenna transmit / receive capability of the first node is configured as 3T6R.

[0079] SRS resource configuration is used to configure any of the following:

[0080] Two three-antenna-port SRS resource groups;

[0081] SRS resources with two three-antenna ports;

[0082] A three-antenna-port SRS resource group and a three-antenna-port SRS resource.

[0083] Since the first node comprises six antennas, it needs to transmit SRS at least twice to ensure that all transmit antenna ports transmit SRS. In this case, the antenna ports supported by the SRS resource correspond to at least the six transmit antenna ports of the first node.

[0084] For example, the SRS resource configuration is used to configure six antenna ports of the SRS resource, which respectively correspond to the six transmit antenna ports of the first node, and there are no duplicates. For instance, assuming the indices of the transmit antenna ports of the first node are 0, 1, 2, 3, 4, and 5, when the SRS resource configuration is used to configure two three-antenna-port SRS resources, the antenna ports supported by the first three-antenna-port SRS resource correspond to the three transmit antenna ports 0, 1, and 2 of the first node, and the antenna ports supported by the second three-antenna-port SRS resource correspond to the three transmit antenna ports 3, 4, and 5 of the first node.

[0085] Furthermore, two three-antenna-port SRS resources (or resource groups) occupy the same frequency domain resources but different time domain resources; or, a three-antenna-port SRS resource group and a three-antenna-port SRS resource occupy the same frequency domain resources but different time domain resources. Multiple SRS resources within a three-antenna-port SRS resource group occupy the same frequency domain resources and the same time domain resources.

[0086] Type 4: The antenna transmit / receive capability of the first node is configured as 3T8R.

[0087] SRS resource configuration is used to configure any of the following:

[0088] Three three-antenna-port SRS resource groups;

[0089] SRS resources with three three-antenna ports;

[0090] Two three-antenna-port SRS resource groups and one three-antenna-port SRS resource;

[0091] A three-antenna-port SRS resource group and two three-antenna-port SRS resource groups;

[0092] Two three-antenna-port SRS resource groups and one two-antenna-port SRS resource.

[0093] Two three-antenna-port SRS resources and one two-antenna-port SRS resource group.

[0094] Two three-antenna-port SRS resources and one two-antenna-port SRS resource.

[0095] Since the first node includes eight antenna ports, it needs to send SRS at least three times to ensure that all transmit antenna ports send SRS. In this case, the antenna ports supported by the SRS resource correspond to at least the eight transmit antenna ports of the first node.

[0096] For example, the SRS resource configuration can be used to configure any of the following: a group of three three-antenna-port SRS resources; a group of three three-antenna-port SRS resources; a group of two three-antenna-port SRS resources and a group of one three-antenna-port SRS resource. In this case, the nine antenna ports of the SRS resources configured by the SRS resource configuration correspond at least to the eight transmit antenna ports of the first node. Therefore, the transmit antenna ports of the first node corresponding to the antenna ports supported by the three SRS resources (or resource groups) configured by the SRS resource configuration can be partially different or completely different. For example, assuming the indices of the transmit antenna ports of the first node are 0, 1, 2, 3, 4, 5, 6, 7, when the SRS resource configuration is used to configure three three-antenna-port SRS resources, the antenna ports supported by the first three-antenna-port SRS resource correspond to the three transmit antenna ports 0, 1, and 2 of the first node; the antenna ports supported by the second three-antenna-port SRS resource correspond to the three transmit antenna ports 3, 4, and 5 of the first node; and the antenna ports supported by the third three-antenna-port SRS resource correspond to the three transmit antenna ports 6, 7, and 2 of the first node.

[0097] In addition, SRS resources (or resource groups) of multiple three-antenna ports occupy the same frequency domain resources and different time domain resources, and SRS resources within an SRS resource group occupy the same frequency domain resources and the same time domain resources.

[0098] Another example is that the SRS resource configuration can be used to configure any of the following: a three-antenna-port SRS resource group and two three-antenna-port SRS resource groups; two three-antenna-port SRS resource groups and one two-antenna-port SRS resource; two three-antenna-port SRS resources and one two-antenna-port SRS resource group; two three-antenna-port SRS resources and one two-antenna-port SRS resource. In this case, the SRS resource configuration supports eight antenna ports, corresponding to the eight transmit antenna ports of the first node, with no overlap. For example, assuming the indices of the transmit antenna ports of the first node are 0, 1, 2, 3, 4, 5, 6, 7, when the SRS resource configuration is used to configure two three-antenna-port SRS resources and one two-antenna-port SRS resource, the antenna ports supported by the first three-antenna-port SRS resource correspond to the three transmit antenna ports 0, 1, and 2 of the first node; the antenna ports supported by the second three-antenna-port SRS resource correspond to the three transmit antenna ports 3, 4, and 5 of the first node; and the antenna ports supported by the two-antenna-port SRS resource correspond to the three transmit antenna ports 6 and 7 of the first node.

[0099] Furthermore, SRS resources (or resource groups) at three antenna ports and SRS resources at two antenna ports occupy the same frequency domain resources but different time domain resources. SRS resources within an SRS resource group occupy the same frequency domain resources and the same time domain resources.

[0100] After receiving the SRS resource configuration, the first node can send SRS based on the SRS resource configuration. However, during SRS transmission, the first node may encounter SRS resource conflicts. The following will introduce the solution to SRS resource conflicts.

[0101] In some embodiments, if there is a conflict between the first SRS resource and the second SRS resource, SRS is transmitted on the first SRS resource, and transmission of SRS is abandoned on all resources of the second SRS resource or on the conflicting resource.

[0102] The first SRS resource has a higher priority than the second SRS resource; the conflicting resource of the second SRS resource is the portion of the second SRS resource that overlaps with the first SRS resource. For example, the first and second SRS resources may include the aforementioned three-antenna-port SRS resources or a group of three-antenna-port SRS resources.

[0103] The second node can configure multiple SRS resources for the first node, and configure the SRS transmitted based on these multiple SRS resources to be aperiodic, semi-persistent, or periodic. However, when multiple SRS resources are configured to transmit at least two different types of SRS on the same time-domain resource, conflicts will occur when the first node transmits SRS based on these multiple SRS resources, causing the second node to fail to receive the SRS sent by the first node. For example, when the first SRS resource is configured to transmit aperiodic SRS on time-domain symbol 9, and the second SRS resource is configured to transmit periodic SRS on both time-domain symbols 9 and 10, both the first and second SRS resources are configured to transmit SRS on time-domain symbol 9, and the types of SRS transmitted are different. That is, the first node transmits both aperiodic and periodic signals on time-domain symbol 9 simultaneously. In this case, the first node will experience a conflict on the first and second SRS resources. For example, the first and second SRS resources can be time-domain resources for transmitting SRS.

[0104] In this scenario, the first node can determine the highest-priority SRS resource based on priority, and transmit the SRS based on the first SRS resource when a conflicting resource (such as the symbol containing the SRS) is triggered for transmission. Alternatively, the first node can choose not to transmit the SRS on the second SRS resource, i.e., it can choose not to transmit the SRS through the second SRS resource.

[0105] Alternatively, the first node may only abandon the transmission of SRS for the conflicting SRS resource in the second SRS resource, while other resources in the second SRS resource can still continue to transmit SRS. For example, if the first SRS resource is configured to transmit aperiodic SRS based on time-domain symbol 9, and the second SRS resource is configured to transmit periodic or semi-persistent SRS using time-domain symbols 9 and 10, since time-domain symbol 9 in the second SRS resource is the same time-domain resource as time-domain symbol 9 in the first SRS resource, and the type of SRS transmitted by time-domain symbol 9 in the first SRS resource is different from the type of SRS transmitted by time-domain symbol 9 in the second SRS resource, it can be determined that the first SRS resource and the second SRS resource conflict. The conflicting resource overlapping with the first SRS resource in the second SRS resource is identified as time-domain symbol 9, and the transmission of SRS for time-domain symbol 9 in the second SRS resource is abandoned, while time-domain symbol 10 in the second SRS resource is transmitted normally.

[0106] In one possible implementation, the priority of an SRS resource can be determined based on the type of SRS configured in the SRS. For example, aperiodic SRS has a higher priority than semi-persistent SRS, which in turn has a higher priority than periodic SRS. Specifically, regarding the first and second SRS resources, the first SRS resource is an aperiodic SRS resource, and the second SRS resource is either a semi-persistent or periodic SRS resource; or, the first SRS resource is a semi-persistent SRS resource, and the second SRS resource is a periodic SRS resource.

[0107] The following four examples will illustrate the two conflict resolution methods described above:

[0108] Example 1: Transmit SRS on the first SRS resource, and abandon the transmission of SRS on all resources of the second SRS resource.

[0109] When the first SRS resource is configured to transmit aperiodic SRS based on time-domain symbol 9, and the second SRS resource is configured to transmit periodic or semi-persistent SRS on time-domain symbols 9 and 10, since time-domain symbol 9 in the second SRS resource is the same time-domain resource as time-domain symbol 9 in the first SRS resource (i.e., overlapping), and the type of SRS transmitted by time-domain symbol 9 in the first SRS resource is different from the type of SRS transmitted by time-domain symbol 9 in the second SRS resource, it can be determined that the first SRS resource and the second SRS resource conflict. Therefore, when time-domain symbol 9 for transmitting aperiodic SRS is triggered, the first node still transmits aperiodic SRS based on time-domain symbol 9 and abandons the transmission of periodic or semi-persistent SRS on time-domain symbols 9 and 10. The first SRS resource is a single-antenna-port SRS resource configured to transmit SRS on one time-domain symbol, and the second SRS resource is a dual-antenna-port SRS resource or two single-antenna-port SRS resources configured to transmit SRS on two time-domain symbols.

[0110] Example 2: Transmit SRS on the first SRS resource and abandon transmitting SRS on the conflicting resource of the second SRS resource.

[0111] When the first SRS resource is configured to transmit aperiodic SRS based on time-domain symbol 9, and the second SRS resource is configured to transmit periodic or semi-persistent SRS on time-domain symbols 9 and 10, since time-domain symbol 9 in the second SRS resource is the same time-domain resource as time-domain symbol 9 in the first SRS resource (i.e., overlapping), and the type of SRS transmitted by time-domain symbol 9 in the first SRS resource is different from the type of SRS transmitted by time-domain symbol 9 in the second SRS resource, it can be determined that the first SRS resource and the second SRS resource conflict, and the conflicting resource is time-domain symbol 9. Therefore, when time-domain symbol 9 for transmitting aperiodic SRS is triggered, the first node still transmits aperiodic SRS based on time-domain symbol 9 and abandons the transmission of periodic or semi-persistent SRS on time-domain symbol 9. The first SRS resource is a single-antenna-port SRS resource configured to transmit SRS on one time-domain symbol, and the second SRS resource is a dual-antenna-port SRS resource or two single-antenna-port SRS resources configured to transmit SRS on two time-domain symbols.

[0112] Example 3: Transmit SRS on the first SRS resource and abandon transmitting SRS on all resources of the second SRS resource.

[0113] When the first SRS resource is configured to transmit semi-persistent SRS based on time-domain symbol 9, and the second SRS resource is configured to transmit periodic SRS on time-domain symbols 9 and 10, since time-domain symbol 9 in the second SRS resource is the same time-domain resource as time-domain symbol 9 in the first SRS resource (i.e., overlapping), and the type of SRS transmitted by time-domain symbol 9 in the first SRS resource is different from the type of SRS transmitted by time-domain symbol 9 in the second SRS resource, it can be determined that the first SRS resource and the second SRS resource conflict. Therefore, when time-domain symbol 9, which transmits semi-persistent SRS, is triggered, the first node still transmits semi-persistent SRS based on time-domain symbol 9 and abandons the transmission of periodic SRS on time-domain symbols 9 and 10. The first SRS resource is a single-antenna-port SRS resource configured to transmit SRS on one time-domain symbol, and the second SRS resource is a dual-antenna-port SRS resource or two single-antenna-port SRS resources configured to transmit SRS on two time-domain symbols.

[0114] Example 4: Transmit SRS on the first SRS resource and abandon transmitting SRS on the conflicting resource of the second SRS resource.

[0115] When the first SRS resource is configured to transmit semi-persistent SRS based on time-domain symbol 9, and the second SRS resource is configured to transmit periodic SRS on time-domain symbols 9 and 10, since time-domain symbol 9 in the second SRS resource is the same time-domain resource as time-domain symbol 9 in the first SRS resource (i.e., overlapping), and the type of SRS transmitted by time-domain symbol 9 in the first SRS resource is different from the type of SRS transmitted by time-domain symbol 9 in the second SRS resource, it can be determined that the first SRS resource and the second SRS resource conflict, and the conflicting resource is time-domain symbol 9. Therefore, when time-domain symbol 9 for transmitting semi-persistent SRS is triggered, the first node still transmits semi-persistent SRS based on time-domain symbol 9 and abandons the transmission of periodic SRS on time-domain symbol 9. The aforementioned first SRS resource is a single-antenna-port SRS resource configured to transmit SRS on one time-domain symbol, and the second SRS resource is a dual-antenna-port SRS resource or two single-antenna-port SRS resources configured to transmit SRS on two time-domain symbols.

[0116] After the first node sends the SRS, the second node can determine the channel state based on the SRS, and then send control information to the first node based on the determined channel state, so that the first node can perform uplink transmission based on the control information. The following will describe how the first node performs uplink transmission based on the control information sent by the second node.

[0117] It should be noted that in the scenario of a three-antenna port terminal, there is no method in the relevant technology for designing and indicating a partially coherent transmission codebook. Therefore, how to design and indicate a partially coherent transmission codebook is also a technical problem that urgently needs to be solved.

[0118] In some embodiments, the first node receives precoding indication information. The precoding indication information is used to indicate codewords from a partially coherent transmission codebook of the three transmit antenna ports. The three transmit antenna ports are divided into a first antenna port group and a second antenna port group. The first antenna port group includes two transmit antenna ports, and the second antenna port group includes one transmit antenna port.

[0119] In the partially coherent transmission codebook, the codebook elements associated with the first antenna port group are the same as the codebook elements in the fully coherent transmission codebook of the two antenna ports.

[0120] In some embodiments, the precoded indication information may be carried in at least one of the following: Radio Resource Control (RRC) signaling and Downlink Control Information (DCI).

[0121] In one possible implementation, of the three transmit antenna ports of the first node, two transmit antenna ports form a first antenna port group, and the remaining transmit antenna port forms a second antenna port group. For example, the first antenna port group includes antenna port 1 (i.e., the first transmit antenna port) and antenna port 2 (i.e., the second transmit antenna port), and the second antenna port group includes antenna port 3; or, the first antenna port group includes antenna port 1 and antenna port 3 (i.e., the third transmit antenna port), and the second antenna port group includes antenna port 2; or, the first antenna port group includes antenna port 2 and antenna port 3, and the second antenna port group includes antenna port 1.

[0122] When the SRS resource set is configured for "codebook" use, the second node, upon receiving the SRS, can determine the channel state and send precoding indication information to the first node based on the measured channel state. For partially coherent codebook transmission by the first node supporting three transmit antenna ports, after receiving the precoding indication information, the first node can determine the indicator codewords in the partially coherent transmission codebook based on the precoding indication information, thus solving the problem of how to indicate the codebook of the three-antenna-port terminal. The partially coherent transmission codebook is the codebook used by the first node when performing partially coherent transmission on its three transmit antenna ports.

[0123] In some embodiments, in a partially coherent transmission codebook, the non-zero codebook elements associated with the first antenna port group are the same as the codebook elements in the fully coherent transmission codebook of both antenna ports.

[0124] The non-zero codebook elements at corresponding positions in the coherent transmission codebook for the first antenna port group are identical to the codebook elements in the fully coherent transmission codebooks of both antenna ports. The codebook elements at corresponding positions in the coherent transmission codebook for the second antenna port group are padded with 0s or 1s based on the uplink transport stream number, and the matrix coefficients are corrected. The precoding indication information can also indicate the uplink transport stream number.

[0125] In some embodiments, for any transport stream, non-zero codebook elements in the partially coherent transport codebook are associated with either the first antenna port group or the second antenna port group. For example, the number of uplink transport streams can be single-stream, dual-stream, triple-stream, etc.

[0126] In some embodiments, for a single transport stream, the codebook element associated with the second antenna port group in the partially coherent transport codebook is 0, and the codebook element associated with the first antenna port group in the partially coherent transport codebook (i.e. the non-zero codebook element mentioned above) is the same as the codebook element in the fully coherent transport codebook of the two antenna ports under a single transport stream.

[0127] With only one uplink transport stream, the first node can transmit this single transport stream using the first antenna port group. Therefore, the codebook element at the corresponding position in the partially coherent transport codebook of the first antenna port group is the same as the codebook element of the fully coherent codebook for a single stream from two antenna ports. Since only the first antenna port group needs to transmit this single transport stream, and the second antenna port group does not need to transmit, the codebook element at the corresponding position in the partially coherent transport codebook of the second antenna port group is 0. This solves the problem of how to design and indicate the partially coherent transport codebook for a three-antenna-port terminal.

[0128] For example, when the first antenna port group includes antenna port 1 and antenna port 3, and the second antenna port group includes antenna port 2, the partial coherent transmission codebook satisfies the following (Formula 1):

[0129] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, and the third row corresponds to antenna port 3.

[0130] When the first antenna port group includes antenna port 1 and antenna port 2, and the second antenna port group includes antenna port 3, the partial coherent transmission codebook satisfies the following (Formula 2):

[0131] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, and the third row corresponds to antenna port 3.

[0132] When the first antenna port group includes antenna port 2 and antenna port 3, and the second antenna port group includes antenna port 1, the partial coherent transmission codebook satisfies the following (Formula 3):

[0133] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, and the third row corresponds to antenna port 3.

[0134] In some embodiments, for two transport streams, the codebook element associated with the second antenna port group (i.e., the non-zero codebook element mentioned above) in the partially coherent transport codebook is 1, and the codebook element associated with the first antenna port group in the partially coherent transport codebook is the same as the codebook element in the fully coherent transport codebook of the two antenna ports under a single transport stream.

[0135] With two uplink transport streams, the first node can transmit one transport stream using the first antenna port group and the other transport stream using the second antenna port group. Therefore, the non-zero codebook elements at corresponding positions in the partially coherent transport codebook of the first antenna port group are the same as the codebook elements in the fully coherent codebook of the single stream with two antenna ports. The codebook elements at corresponding positions in the partially coherent transport codebook of the second antenna port group are 1, and the remaining positions are padded with 0.

[0136] For example, when the first antenna port group includes antenna port 1 and antenna port 3, and the second antenna port group includes antenna port 2, the partial coherent transmission codebook satisfies the following (Formula 4):

[0137] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, the third row corresponds to antenna port 3, the first column corresponds to the first transmission stream, and the second column corresponds to the second transmission stream.

[0138] When the first antenna port group includes antenna port 1 and antenna port 2, and the second antenna port group includes antenna port 3, the partial coherent transmission codebook satisfies the following (Formula 5):

[0139] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, the third row corresponds to antenna port 3, the first column corresponds to the first transmission stream, and the second column corresponds to the second transmission stream.

[0140] When the first antenna port group includes antenna port 2 and antenna port 3, and the second antenna port group includes antenna port 1, the partial coherent transmission codebook satisfies the following (Formula 6):

[0141] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, the third row corresponds to antenna port 3, the first column corresponds to the first transmission stream, and the second column corresponds to the second transmission stream.

[0142] In some embodiments, for three transport streams, the codebook element at the corresponding position of the transport stream corresponding to the second antenna port group in the partially coherent transport codebook is 1, and the codebook element related to the first antenna port group in the partially coherent transport codebook is the same as the codebook element in the fully coherent transport codebook of the two antenna ports under the two transport streams.

[0143] With three uplink transport streams, the first node can use the first antenna port group to transmit two transport streams and the second antenna port group to transmit the remaining transport stream. Therefore, the codebook elements at the corresponding positions in the partially coherent transport codebook of the first antenna port group are the same as the codebook elements in the fully coherent codebook of the three streams with two antenna ports. The codebook elements at the corresponding positions in the partially coherent transport codebook of the second antenna port group are 1, and the remaining positions are padded with 0.

[0144] For example, when the first antenna port group includes antenna port 1 and antenna port 3, and the second antenna port group includes antenna port 2, the partial coherent transmission codebook satisfies the following (Formula 7):

[0145] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, the third row corresponds to antenna port 3, the first column corresponds to the first transmission stream, the second column corresponds to the second transmission stream, and the third column corresponds to the third transmission stream.

[0146] When the first antenna port group includes antenna port 1 and antenna port 2, and the second antenna port group includes antenna port 3, the partial coherent transmission codebook satisfies the following (Equation 8):

[0147] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, the third row corresponds to antenna port 3, the first column corresponds to the first transmission stream, the second column corresponds to the second transmission stream, and the third column corresponds to the third transmission stream.

[0148] When the first antenna port group includes antenna port 2 and antenna port 3, and the second antenna port group includes antenna port 1, the partial coherent transmission codebook satisfies the following (Formula 9):

[0149] Where j is an imaginary number, the first row in the above matrix formula corresponds to antenna port 1, the second row corresponds to antenna port 2, the third row corresponds to antenna port 3, the first column corresponds to the first transmission stream, the second column corresponds to the second transmission stream, and the third column corresponds to the third transmission stream.

[0150] In one possible implementation, the precoding indication information may include TPMI. TPMI is used to indicate the precoding information used by the first node to determine a partial coherent codebook. The design of the TPMI table will be described below.

[0151] When the Maxrank resource is configured to be 1, the values ​​of the TPMI field are shown in Table 1:

[0152] Table 1

[0153] Here, "Bit field mapped to index" refers to the bit field mapped to the index, and "layer" refers to the number of layers, which is equal to the number of uplink transport streams. Different numbers of uplink transport streams correspond to different TPMIs.

[0154] When the maxrank resource is configured to 2, the values ​​of the TPMI field are shown in Table 2:

[0155] Table 2

[0156] Here, "Bit field mapped to index" refers to the bit field mapped to the index, and "layer" refers to the number of layers, which is equal to the number of uplink transport streams. Different numbers of uplink transport streams correspond to different TPMIs.

[0157] When the maxrank resource is configured to 3, the values ​​of the TPMI field are shown in Table 3:

[0158] Table 3

[0159] Here, "Bit field mapped to index" refers to the bit field mapped to the index, and "layer" refers to the number of layers, which is equal to the number of uplink transport streams. Different numbers of uplink transport streams correspond to different TPMIs.

[0160] In some embodiments, the first node may pre-divide the antenna ports in the first antenna port group and the second antenna port group, or it may be indicated by the second node.

[0161] When the first antenna port group and the second antenna port group are pre-defined, the first antenna port group and the second antenna port group are pre-defined; wherein, the pre-defined first antenna port group includes a first transmit antenna port and a second transmit antenna port, and the pre-defined second antenna port group includes a third transmit antenna port; or, the pre-defined first antenna port group includes a first transmit antenna port and a third transmit antenna port, and the pre-defined second antenna port group includes a second transmit antenna port; or, the pre-defined first antenna port group includes a second transmit antenna port and a third transmit antenna port, and the pre-defined second antenna port group includes a first transmit antenna port.

[0162] When the division of the first antenna port group and the second antenna port group is indicated by the second node, the first node can receive first indication information, which is used to indicate the division method for the first antenna port group and the second antenna port group; or, the first indication information can also be used to indicate which antenna ports are included in the first antenna port group and the second antenna port group respectively.

[0163] During uplink transmission, in addition to determining the codebook based on the precoding indication information, the first node also needs to determine which antenna ports will be used as transmitting antenna ports during uplink transmission.

[0164] It should be noted that since the first node includes multiple antenna ports, and the first node needs to determine the transmit antenna port used for uplink transmission through the Detection Reference Signal Resource Indicator (SRI) field during uplink transmission, the relevant technology does not support SRI indication adapted to three-antenna-port terminals (i.e., terminals that support three transmit antenna ports). Therefore, the following will introduce the SRI indication method adapted to three-antenna-port terminals.

[0165] In some embodiments, the first node receives control information for uplink transmission. The number of Probe Reference Signal Resource Indicators (SRIs) in the uplink transmission control information is determined based on the number of SRS resource sets configured for uplink transmission by the first node and the contents of the SRS resource sets.

[0166] In some embodiments, the control information transmitted uplink is carried in at least one of the following: RRC signaling, DCI.

[0167] In some embodiments, SRI and TPMI can be issued based on the same message, such as DCI.

[0168] After receiving the SRS, the second node can determine the optimal transmit antenna port based on the measured channel state. Then, the second node can send downlink transmission control information to the first node to instruct the first node to determine the transmit antenna port used for uplink transmission.

[0169] In one possible implementation, the control information for uplink transmission includes at least one SRI. Each SRI corresponds to an SRS resource set, and each SRI is used to indicate the SRS resources corresponding to the uplink transmission from the SRS resource set corresponding to the SRI. For example, if an SRS resource set contains multiple SRS resources, then the SRI is used to indicate that these multiple SRS resources are the SRS resources required to determine the transmit antenna port. Then, the first node can determine the transmit antenna port for the uplink transmission based on the antenna port supported by the required SRS resources indicated by the SRI.

[0170] In another possible implementation, when the SRS resource configuration uses a three-antenna-port SRS resource group that includes three single-antenna-port SRS resources, the first node can receive one or more SRI fields. For example, the three single-antenna-port SRS resources belong to one, two, or three SRS resource sets. Therefore, when the second node sends SRS, it can use one SRI field to indicate three single-antenna-port SRS resources in one SRS resource set, or two SRI fields to indicate three single-antenna-port SRS resources in two SRS resource sets (i.e., one SRI field indicates one SRS resource and the other indicates two SRS resources), or one of the three SRI fields indicates one SRS resource in one SRS resource set. In this way, the second node can indicate the SRS resource to the first node through this SRI field, thereby solving the problem of SRI indication method in scenarios that do not support three-antenna-port terminals in related technologies.

[0171] When there are two or three SRI fields, the two or three SRI fields can indicate a three-antenna-port SRS resource group, and one SRS resource group corresponds to all transmit antenna ports of an uplink transmission. Alternatively, the two or three SRI fields can also individually indicate multiple SRS resources, in which case the uplink transmission can be regarded as a three-antenna-port uplink transmission, rather than being supported by a combination of SRS resources. However, when three single-antenna-port SRS resource groups indicated by two or three SRI fields jointly support all transmit antenna ports of an uplink transmission, at least one of the following should be satisfied: the first node supports three transmit antenna ports; the first node is indicated by a combination of two or three SRI fields (i.e., two or three SRI fields are used together to indicate the SRS resources required for the uplink transmission); when two SRS fields are used, one of the two SRI fields indicates two single-antenna-port SRS resources in one SRS resource set, and the other indicates one single-antenna-port SRS resource in another SRS resource set; or when three SRS fields are used, one of the three SRI fields indicates one SRS resource in one SRS resource set.

[0172] In some embodiments, the number of SRIs included in the uplink control information is determined based on the number of SRS resource sets configured for uplink transmission by the first node and the configuration of the SRS resource sets. One SRI field indicates an SRS resource in one SRS resource set; therefore, the number of SRI fields is related to the number of SRS resource sets. Furthermore, when the number of SRS resources in multiple SRS resource sets is three, no SRI field indication is needed; therefore, the number of SRIs is related to the configuration of the SRS resource sets. The number of SRI fields in different cases will be described below.

[0173] Scenario 1: Configure an SRS resource set, which includes three or more single-antenna-port SRS resources, with a single SRI. One SRI indicates the SRS resource group used for configuration, which consists of three single-antenna-port SRS resources. Therefore, a single SRI field is needed to indicate which three single-antenna-port SRS resources are included in the configuration.

[0174] Scenario 2: Configure two SRS resource sets. One SRS resource set includes two or more single-antenna-port SRS resources, and the other SRS resource set includes one or more single-antenna-port SRS resources. The number of SRIs is 2, and each SRI corresponds to one SRS resource set. Therefore, two SRI fields are needed to indicate which three single-antenna-port SRS resources are in the two SRS resource sets.

[0175] Scenario 3: Configure three SRS resource sets, each containing more than one single-antenna-port SRS resource, with three SRIs, and each SRI corresponding to one SRS resource set. Therefore, three SRI fields are needed to indicate which three SRS resources (or which SRS resource group) are in the three SRS resource sets.

[0176] Scenario 4: Configure an SRS resource set containing three single-antenna-port SRS resources, with SRIs either ignored or zero in number. Since an SRS resource set includes three single-antenna-port SRS resources, the specific three resources can be identified without an SRI field, or the SRI field can be ignored.

[0177] Scenario 5: Configure two SRS resource sets. One SRS resource set includes two single-antenna-port SRS resources, and the other SRS resource set includes one single-antenna-port SRS resource. The SRI is ignored or has a quantity of 0. The two SRS resource sets together include three SRS resources. Therefore, it is possible to determine which three single-antenna-port SRS resources are included without the SRI field indication, or the SRI field can be ignored.

[0178] Scenario 6: Configure three SRS resource sets, each containing one single-antenna-port SRS resource. The SRI is ignored or has a quantity of 0. The three SRS resource sets collectively contain three single-antenna-port SRS resources. Therefore, the specific three single-antenna-port SRS resources can be determined without an SRI field indication, or the SRI field can be ignored.

[0179] Next, after determining the SRS resource used for transmission based on the SRI field, the first node also needs to determine which transmit antenna ports of the first node are associated with that SRS resource. The following will describe how the first node determines the transmit antenna ports for uplink transmission.

[0180] It should be noted that since the antenna ports supported by the three-antenna-port SRS resource (or resource group) are associated with the three transmit antenna ports of the first node, the first node can transmit SRS based on the antenna ports associated with different SRS resources (or resource groups). Subsequently, the second node determines the channel state between all antenna ports and the second node based on the received SRS, thereby determining the optimal three transmit antenna ports and precoding indication information. Then, the second node can determine the SRS resource used by the optimal three transmit antenna ports to transmit SRS and indicate this SRS resource through the SRI field. After receiving the SRI field, the first node can determine that the antenna port associated with the indicated SRS resource is the transmit antenna port for uplink transmission.

[0181] In some embodiments, after receiving the SRS resource, the first node can determine the index of the antenna port supported by the SRS resource, and can determine the index of the transmitting antenna port of the first node associated with the index of the antenna port supported by the SRS resource through a pre-defined association rule.

[0182] In one possible implementation, for a three-antenna-port SRS resource or a three-antenna-port SRS resource group, the three antenna ports in the SRS resource or SRS resource group are associated with the three transmit antenna ports in the index order of the transmit antenna ports; or, the three antenna ports in the SRS resource or SRS resource group are associated with the three transmit antenna ports in the order of the antenna port group.

[0183] For example, the indexes of the antenna ports supported by the SRS resource (or resource group) of the three antenna ports are associated in the order of the indexes of the transmitting antenna ports of the first node, that is, SRS P_0 (i.e., the first port supported by the SRS resource) is associated with antenna port P_0 (i.e., the first antenna port of the first node), SRS P_1 is associated with antenna port P_1, and SRS P_2 is associated with antenna port P_2.

[0184] Another example is that the indexes of the antenna ports supported by the SRS resource (or resource group) of the three antenna ports are associated according to the order of the antenna port group of the first node. For example, if the first antenna port group includes antenna port 1 and antenna port 2, and the second antenna port group includes antenna port 1, assuming that the order of the first antenna port group is before the order of the second antenna port group, then SRS P_0 is associated with antenna port P_0, SRS P_1 is associated with antenna port P_2, and SRS P_2 is associated with antenna port P_1.

[0185] The following sections will introduce these two association rules using three different SRS resource models.

[0186] The first type of SRS resource is the SRS resource of 4 antenna ports that discards one antenna port (i.e., 4-1 mode):

[0187] Figure 3 illustrates the association rule diagram for a 4-1 mode SRS resource. As shown in Figure 3, SRS1 is a four-antenna-port SRS resource, supporting antenna ports including: SRS1 P_0, SRS1 P_1, SRS1 P_2, and SRS1 P_3, but the last antenna port, SRS1 P_3, is discarded (i.e., this antenna port is not used). The antenna ports of the first node used for uplink transmission (e.g., Physical Uplink Shared Channel, PUSCH) include: P_0, P_1, and P_2.

[0188] When associating antenna ports according to the order of the first node's antenna ports, SRS1 P_0 is associated with antenna port P_0, SRS1 P_1 with antenna port P_1, and SRS1 P_2 with antenna port P_2. Alternatively, when associating antenna ports according to the order of their groups, and the first antenna port group (including antenna ports P_0 and P_2) precedes the second antenna port group (including antenna port P_1), SRS1 P_0 is associated with antenna port P_0, SRS1 P_1 with antenna port P_2, and SRS1 P_2 with antenna port P_1.

[0189] The second type of SRS resource consists of two SRS resources, one of which supports two antenna ports and the other supports one antenna port (i.e., 2+1 mode):

[0190] Figure 4 illustrates the association rule diagram for a 2+1 mode SRS resource. As shown in Figure 4, SRS1 is a dual-antenna-port SRS resource, supporting antenna ports SRS1 P_0 and SRS1 P_1. SRS2 is a single-antenna-port SRS resource, supporting antenna port SRS2 P_0. The antenna ports used for uplink transmission (PUSCH) of the first node include P_0, P_1, and P_2. The two SRS resources combined support the three antenna ports P_0, P_1, and P_2 of the first node, which are the three transmit antenna ports used for PUSCH.

[0191] When associating antenna ports according to the order of the first node's antenna ports, SRS1 P_0 is associated with antenna port P_0, SRS1 P_1 with antenna port P_1, and SRS2 P_0 with antenna port P_2. Alternatively, when associating antenna ports according to the order of their groups, and the first antenna port group (including antenna ports P_0 and P_2) precedes the second antenna port group (including antenna port P_1), SRS1 P_0 is associated with antenna port P_0, SRS1 P_1 with antenna port P_2, and SRS2 P_0 with antenna port P_1.

[0192] The third type of SRS resource consists of three single-antenna port SRS resources (i.e., 1+1+1 mode):

[0193] Figure 5 illustrates the association rule diagram of SRS resources in a 1+1+1 mode. As shown in Figure 5, SRS1, SRS2, and SRS3 are three single-antenna-port SRS resources, supporting antenna ports: SRS1 P_0, SRS2 P_0, and SRS3 P_0, respectively. The antenna ports of the first node used for uplink transmission (PUSCH) include: P_0, P_1, and P_2. The three SRS resources combined support the three antenna ports P_0, P_1, and P_2 of the first node, which are the three transmit antenna ports used for PUSCH.

[0194] When associating antenna ports according to the order of the first node's antenna ports, SRS1 P_0 is associated with antenna port P_0, SRS2 P_0 with antenna port P_1, and SRS3 P_0 with antenna port P_2. Alternatively, when associating antenna ports according to the order of their groups, and the first antenna port group (including antenna ports P_0 and P_2) precedes the second antenna port group (including antenna port P_1), SRS1 P_0 is associated with antenna port P_0, SRS2 P_0 with antenna port P_2, and SRS3 P_0 with antenna port P_1.

[0195] The probe reference signal resource configuration method provided in this embodiment can be applied to the second node 102 in the communication system shown in FIG1. ​​FIG6 shows a schematic flowchart of probe reference signal resource configuration. As shown in FIG6, the probe reference signal resource configuration method includes the following S601 and S602.

[0196] S601, Send SRS resource configuration to the first node.

[0197] The SRS resource configuration is used to configure at least one SRS resource group or one SRS resource. For example, the first node supports three transmit antenna ports. The SRS resource configuration is used to configure an SRS resource group with three antenna ports, and the SRS resource configuration is used to configure an SRS resource with three antenna ports.

[0198] When configuring SRS resources for the first node, the second node typically configures SRS resources suitable for terminals with one, two, or four transmit antenna ports, but not for terminals with three transmit antenna ports. Therefore, if the first node supports three transmit antenna ports (i.e., a three-antenna port terminal), it can receive SRS resource configurations from the second node. This allows it to configure an SRS resource group or SRS resources suitable for the first node's three-antenna ports, thus resolving the issue of how to configure corresponding SRS resources for terminals supporting three transmit antenna ports.

[0199] S602, Receive the SRS sent by the first node based on the SRS resource configuration.

[0200] It should be noted that the second node indicates SRS resources (or resource groups), indicates SRI, indicates codebook, and the association rules between SRS resources and antenna ports can refer to the content of the first node, and will not be repeated here in this embodiment of the disclosure.

[0201] In some embodiments, prior to S601 described above, the second node may receive the antenna transceiver capability reported by the first node.

[0202] It should be understood that the description of the receiving antenna's transceiver capability of the second node can refer to the content of the transmitting antenna's transceiver capability of the first node described above, and will not be repeated here in the embodiments of this disclosure.

[0203] In some embodiments, after S602 described above, the second node may send precoding indication information to the first node.

[0204] It should be understood that the description of the precoding instruction information sent by the second node can refer to the content of the precoding instruction information received by the first node described above, and will not be repeated here in the embodiments of this disclosure.

[0205] In one possible implementation, the second node may also send first indication information to the first node. The first indication information and the precoded indication information may be carried in the same DCI, or the first indication information may also be carried in the precoded indication information. The description of the second node sending the first indication information can be found in the above description of the first node receiving the first indication information; this will not be repeated here.

[0206] In some embodiments, the second node may send uplink transmission control information to the first node. For example, the uplink transmission control information may be carried in the same DCI as the precoded indication information. The description of the second node sending the uplink transmission control information can be found in the description of the first node receiving the uplink transmission control information described above, and will not be repeated here.

[0207] It is understood that, in order to achieve the above-mentioned functions, the detection reference signal resource configuration device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the algorithmic steps of the various examples described in conjunction with the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0208] This disclosure embodiment can divide the detection reference signal resource configuration device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0209] Figure 7 is a schematic diagram of a probe reference signal resource configuration device provided in an embodiment of this disclosure. The probe reference signal resource configuration device can execute the probe reference signal resource configuration method provided in the above-described method embodiment. As shown in Figure 7, the probe reference signal resource configuration device includes: a receiving unit 701.

[0210] The receiving unit 701 is used to receive the detection reference signal SRS resource configuration, which is used to configure at least one SRS resource group or one SRS resource.

[0211] In one possible implementation, the SRS resource group is a three-antenna-port SRS resource group, which includes one of the following: a single-antenna-port SRS resource and a two-antenna-port SRS resource; or, three single-antenna-port SRS resources.

[0212] In one possible implementation, the SRS resource is a three-antenna-port SRS resource; wherein, the three-antenna-port SRS resource is obtained by relinquishing one antenna port from the four-antenna-port SRS resource.

[0213] In one possible implementation, an SRS resource group satisfies at least one of the following: SRS resources in the same SRS resource group belong to the same SRS resource set or different SRS resource sets; SRS resources in different SRS resource groups belong to the same SRS resource set or different SRS resource sets; SRS resources in the same SRS resource group occupy the same frequency domain resources; SRS resources in different SRS resource groups occupy the same frequency domain resources; SRS resources in the same SRS resource group occupy the same time domain resources or different time domain resources; SRS resources in different SRS resource groups occupy the same time domain resources or different time domain resources.

[0214] In one possible implementation, the probe reference signal resource configuration device further includes a transmitting unit 702.

[0215] The transmitting unit 702 is used to report the antenna transmit / receive capability to the second node, wherein the antenna transmit / receive capability includes any one of the following: 3T3R, 3T4R, 3T6R, or 3T8R.

[0216] In one possible implementation, the first node is configured as 3T3R, and the SRS resource configuration is used to configure a three-antenna-port SRS resource group or a three-antenna-port SRS resource.

[0217] In one possible implementation, the first node is configured as 3T4R, and the SRS resource configuration is used to configure any of the following: two three-antenna port SRS resource groups; two three-antenna port SRS resources; one three-antenna port SRS resource group and one three-antenna port SRS resource; one three-antenna port SRS resource group and one single-antenna port SRS resource; one three-antenna port SRS resource and one single-antenna port SRS resource.

[0218] In one possible implementation, the first node is configured as 3T6R, and the SRS resource configuration is used to configure any of the following: two three-antenna port SRS resource groups; two three-antenna port SRS resources; one three-antenna port SRS resource group and one three-antenna port SRS resource.

[0219] In one possible implementation, the first node is configured as 3T8R, and the SRS resource configuration is used to configure any of the following: a group of three three-antenna ports SRS resources; three three-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of one three-antenna port SRS resources; a group of one three-antenna port SRS resources and a group of two three-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of two two-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of two two-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of two two-antenna ports SRS resources.

[0220] In one possible implementation, the receiving unit 701 is further configured to receive precoding indication information, which is used to indicate codewords from a partial coherent transmission codebook of the three transmit antenna ports supported by the first node; the three transmit antenna ports are divided into a first antenna port group and a second antenna port group, wherein the first antenna port group includes two transmit antenna ports and the second antenna port group includes one transmit antenna port.

[0221] In one possible implementation, the non-zero codebook elements associated with the first antenna port group in the partially coherent transmission codebook are the same as the codebook elements in the fully coherent transmission codebook of both antenna ports.

[0222] In one possible implementation, for any transport stream, non-zero codebook elements in the partially coherent transport codebook are associated with either the first antenna port group or the second antenna port group.

[0223] In one possible implementation, the receiving unit 701 is further configured to receive first indication information, which indicates the division method of the first antenna port group and the second antenna port group.

[0224] In one possible implementation, the first antenna port group and the second antenna port group are pre-divided; wherein the pre-divided first antenna port group includes a first transmit antenna port and a second transmit antenna port, and the pre-divided second antenna port group includes a third transmit antenna port; or, the pre-divided first antenna port group includes a first transmit antenna port and a third transmit antenna port, and the pre-divided second antenna port group includes a second transmit antenna port; or, the pre-divided first antenna port group includes a second transmit antenna port and a third transmit antenna port, and the pre-divided second antenna port group includes a first transmit antenna port.

[0225] In one possible implementation, the three antenna ports of the three-antenna-port SRS resource or the three antenna ports in the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the index order of the transmit antenna ports; or, the three antenna ports of the three-antenna-port SRS resource or the three antenna ports in the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the order of the antenna port group.

[0226] In one possible implementation, the receiving unit 701 is further configured to receive control information for uplink transmission; wherein the number of Probe Reference Signal Resource Indicators (SRIs) in the control information for uplink transmission is determined based on the number of SRS resource sets configured for uplink transmission by the first node and the content of the SRS resource sets.

[0227] In one possible implementation, the number of SRIs in the uplink control information satisfies at least one of the following: configuring an SRS resource set, which includes 3 single-antenna port SRS resources, where the SRIs are ignored or have a quantity of 0; configuring an SRS resource set, which includes more than 3 single-antenna port SRS resources, where the number of SRIs is 1; configuring two SRS resource sets, one of which includes two single-antenna port SRS resources and the other of which includes one single-antenna port SRS resource, where the SRIs are ignored or have a quantity of 0. Configure two SRS resource sets: one SRS resource set includes two or more single-antenna-port SRS resources, and the other SRS resource set includes one or more single-antenna-port SRS resources. The number of SRIs is 2, and each SRI corresponds to one SRS resource set. Configure three SRS resource sets: each SRS resource set includes one single-antenna-port SRS resource, and the number of SRIs is ignored or zero. Configure three SRS resource sets: each SRS resource set includes one or more single-antenna-port SRS resources, and the number of SRIs is 3. Each SRI corresponds to one SRS resource set.

[0228] In one possible implementation, the transmitting unit 702 is further configured to transmit SRS on the first SRS resource and abandon transmitting SRS on all resources or conflicting resources of the second SRS resource when the first SRS resource and the second SRS resource conflict; wherein, the priority of the first SRS resource is higher than the priority of the second SRS resource; the conflicting resources of the second SRS resource are the part of the second SRS resource that overlaps with the first SRS resource.

[0229] In one possible implementation, the first SRS resource is an aperiodic SRS resource, and the second SRS resource is a semi-persistent SRS resource or a periodic SRS resource; or, the first SRS resource is a semi-persistent SRS resource, and the second SRS resource is a periodic SRS resource.

[0230] Figure 8 is a schematic diagram of another probe reference signal resource configuration device provided in an embodiment of this disclosure. The probe reference signal resource configuration device can execute the probe reference signal resource configuration method provided in the above method embodiment. As shown in Figure 8, the probe reference signal resource configuration device includes: a transmitting unit 801.

[0231] The sending unit 801 is used to send SRS resource configuration to the first node. The SRS resource configuration is used to configure at least one SRS resource group or one SRS resource.

[0232] In one possible implementation, the SRS resource group is a three-antenna-port SRS resource group, which includes one of the following: a single-antenna-port SRS resource and a two-antenna-port SRS resource; or, three single-antenna-port SRS resources.

[0233] In one possible implementation, the SRS resource is a three-antenna-port SRS resource; the three-antenna-port SRS resource is obtained by relinquishing one antenna port of the four-antenna-port SRS resource.

[0234] In one possible implementation, an SRS resource group satisfies at least one of the following: SRS resources in the same SRS resource group belong to the same SRS resource set or different SRS resource sets; SRS resources in different SRS resource groups belong to the same SRS resource set or different SRS resource sets; SRS resources in the same SRS resource group occupy the same frequency domain resources; SRS resources in different SRS resource groups occupy the same frequency domain resources; SRS resources in the same SRS resource group occupy the same time domain resources or different time domain resources; SRS resources in different SRS resource groups occupy the same time domain resources or different time domain resources.

[0235] In one possible implementation, the probe reference signal resource configuration device further includes a receiving unit 802.

[0236] The receiving unit 802 is used to receive the antenna transceiver capability reported by the first node, wherein the antenna transceiver capability includes any one of the following: 3T3R, T4R, 3T6R, or 3T8R.

[0237] In one possible implementation, the first node is configured as 3T3R, and the SRS resource configuration is used to configure a three-antenna-port SRS resource group or a three-antenna-port SRS resource.

[0238] In one possible implementation, the first node is configured as 3T4R, and the SRS resource configuration is used to configure any of the following: two three-antenna port SRS resource groups; two three-antenna port SRS resources; one three-antenna port SRS resource group and one three-antenna port SRS resource; one three-antenna port SRS resource group and one single-antenna port SRS resource; one three-antenna port SRS resource and one single-antenna port SRS resource.

[0239] In one possible implementation, the first node is configured as 3T6R, and the SRS resource configuration is used to configure any of the following: two three-antenna port SRS resource groups; two three-antenna port SRS resources; one three-antenna port SRS resource group and one three-antenna port SRS resource.

[0240] In one possible implementation, the first node is configured as 3T8R, and the SRS resource configuration is used to configure any of the following: a group of three three-antenna ports SRS resources; three three-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of one three-antenna port SRS resources; a group of one three-antenna port SRS resources and a group of two three-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of two two-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of two two-antenna ports SRS resources; a group of two three-antenna ports SRS resources and a group of two two-antenna ports SRS resources.

[0241] In one possible implementation, the transmitting unit 801 is further configured to transmit precoding indication information to the first node. The precoding indication information is used to indicate codewords from a partially coherent transmission codebook of the three transmitting antenna ports supported by the first node. The three transmitting antenna ports are divided into a first antenna port group and a second antenna port group, wherein the first antenna port group includes two transmitting antenna ports and the second antenna port group includes one transmitting antenna port.

[0242] In one possible implementation, the non-zero codebook elements associated with the first antenna port group in the partially coherent transmission codebook are the same as the codebook elements in the fully coherent transmission codebook of both antenna ports.

[0243] In one possible implementation, for any transport stream, non-zero codebook elements in the partially coherent transport codebook are associated with either the first antenna port group or the second antenna port group.

[0244] In one possible implementation, the transmitting unit 801 is further configured to transmit first indication information to the first node, the first indication information being used to indicate the division method of the first antenna port group and the second antenna port group.

[0245] In one possible implementation, the first antenna port group and the second antenna port group are pre-divided; wherein the pre-divided first antenna port group includes a first transmit antenna port and a second transmit antenna port, and the pre-divided second antenna port group includes a third transmit antenna port; or, the pre-divided first antenna port group includes a first transmit antenna port and a third transmit antenna port, and the pre-divided second antenna port group includes a second transmit antenna port; or, the pre-divided first antenna port group includes a second transmit antenna port and a third transmit antenna port, and the pre-divided second antenna port group includes a first transmit antenna port.

[0246] In one possible implementation, the three antenna ports of the three-antenna-port SRS resource or the three antenna ports in the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the index order of the transmit antenna ports; or, the three antenna ports of the three-antenna-port SRS resource or the three antenna ports in the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the order of the antenna port group.

[0247] In one possible implementation, the transmitting unit 801 is further configured to transmit uplink transmission control information to the first node, wherein the number of Probe Reference Signal Resource Indicators (SRIs) in the uplink transmission control information is determined based on the number of SRS resource sets configured for uplink transmission by the first node and the content of the SRS resource sets.

[0248] In one possible implementation, the number of SRIs in the uplink control information satisfies at least one of the following: configuring an SRS resource set, which includes 3 single-antenna port SRS resources, where the SRIs are ignored or have a quantity of 0; configuring an SRS resource set, which includes more than 3 single-antenna port SRS resources, where the number of SRIs is 1; configuring two SRS resource sets, one of which includes two single-antenna port SRS resources and the other of which includes one single-antenna port SRS resource, where the SRIs are ignored or have a quantity of 0. Configure two SRS resource sets: one SRS resource set includes two or more single-antenna-port SRS resources, and the other SRS resource set includes one or more single-antenna-port SRS resources. The number of SRIs is 2, and each SRI corresponds to one SRS resource set. Configure three SRS resource sets: each SRS resource set includes one single-antenna-port SRS resource, and the number of SRIs is ignored or zero. Configure three SRS resource sets: each SRS resource set includes one or more single-antenna-port SRS resources, and the number of SRIs is 3. Each SRI corresponds to one SRS resource set.

[0249] In implementing the functions of the integrated modules described above in hardware, this disclosure also provides a communication device 90. This communication device 90 can serve as a possible hardware structure for the detection reference signal resource configuration device involved in the above embodiments. As shown in FIG9, the communication device 90 includes: a processor 902 and a bus 904. For example, the communication device may also include a memory 901; and for another example, the communication device may also include a communication interface 903.

[0250] Processor 902 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 902 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 902 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0251] The communication interface 903 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0252] The memory 901 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0253] As one possible implementation, the memory 901 can exist independently of the processor 902. The memory 901 can be connected to the processor 902 via a bus 904 and is used to store instructions or program code. When the processor 902 calls and executes the instructions or program code stored in the memory 901, it can implement the detection reference signal resource configuration method provided in the embodiments of this disclosure.

[0254] In another possible implementation, the memory 901 can also be integrated with the processor 902.

[0255] Bus 904 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 904 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 9, but this does not mean that there is only one bus or one type of bus.

[0256] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the probe reference signal resource configuration method as described in any of the above embodiments.

[0257] Exemplary examples show that the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0258] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to execute the detection reference signal resource configuration method described in any of the above embodiments.

[0259] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

A method for configuring reference signal resources for detection, applied to a first node, the method comprising: Receive detection reference signal (SRS) resource configuration, wherein the SRS resource configuration is used to configure at least one SRS resource group or one SRS resource. According to the method of claim 1, wherein, The SRS resource group is a three-antenna-port SRS resource group, and the three-antenna-port SRS resource group includes one of the following: A single-antenna-port SRS resource and a two-antenna-port SRS resource; or, SRS resources for three single-antenna ports. According to the method of claim 1, wherein, The SRS resource is a three-antenna-port SRS resource; wherein, the three-antenna-port SRS resource is obtained by abandoning one antenna port of the four-antenna-port SRS resource. According to the method of claim 1, wherein, The SRS resource group satisfies at least one of the following: SRS resources in the same SRS resource group belong to the same SRS resource set or different SRS resource sets; SRS resources in different SRS resource groups belong to the same SRS resource set or different SRS resource sets; SRS resources in the same SRS resource group occupy the same frequency domain resources; SRS resources in different SRS resource groups occupy the same frequency domain resources; SRS resources in the same SRS resource group may occupy the same time domain resources or different time domain resources; or SRS resources in different SRS resource groups may occupy the same time domain resources or different time domain resources. According to the method of claim 1, wherein, The method further includes: The antenna transmit / receive capability is reported to the second node, wherein the antenna transmit / receive capability includes any one of the following: 3T3R, 3T4R, 3T6R, or 3T8R. According to the method of claim 1, wherein, The first node is configured as 3T3R, and the SRS resource configuration is used to configure a three-antenna-port SRS resource group or a three-antenna-port SRS resource. According to the method of claim 1, wherein, The first node is configured as 3T4R, and the SRS resource configuration is used to configure any of the following: Two three-antenna-port SRS resource groups; SRS resources with two three-antenna ports; A three-antenna-port SRS resource group and a three-antenna-port SRS resource; A three-antenna-port SRS resource group and a single-antenna-port SRS resource; or One SRS resource with three antenna ports and one SRS resource with one antenna port. According to the method of claim 1, wherein, The first node is configured as 3T6R, and the SRS resource configuration is used to configure any of the following: Two three-antenna-port SRS resource groups; SRS resources with two three-antenna ports; or A three-antenna-port SRS resource group and a three-antenna-port SRS resource. According to the method of claim 1, wherein, The first node is configured as 3T8R, and the SRS resource configuration is used to configure any of the following: Three three-antenna-port SRS resource groups; SRS resources with three three-antenna ports; Two three-antenna-port SRS resource groups and one three-antenna-port SRS resource; A three-antenna-port SRS resource and a two-antenna-port SRS resource group; Two three-antenna-port SRS resource groups and one two-antenna-port SRS resource. Two three-antenna-port SRS resources and one two-antenna-port SRS resource group; or Two three-antenna-port SRS resources and one two-antenna-port SRS resource. According to the method of claim 1, wherein, The method further includes: The system receives precoding indication information, which is used to indicate codewords from a partial coherent transmission codebook of the three transmit antenna ports supported by the first node. The three transmit antenna ports are divided into a first antenna port group and a second antenna port group, wherein the first antenna port group includes two transmit antenna ports and the second antenna port group includes one transmit antenna port. The method according to claim 10, wherein, In the partially coherent transmission codebook, the non-zero codebook elements associated with the first antenna port group are the same as the codebook elements in the fully coherent transmission codebook of the two antenna ports. The method according to claim 11, wherein, For any transport stream, the non-zero codebook elements in the partially coherent transport codebook are associated with either the first antenna port group or the second antenna port group. The method according to claim 10, wherein, The method further includes: Receive first indication information, which is used to indicate the division method of the first antenna port group and the second antenna port group. The method according to claim 10, wherein, The first antenna port group and the second antenna port group are pre-defined; Wherein, the pre-divided first antenna port group includes a first transmit antenna port and a second transmit antenna port, and the pre-divided second antenna port group includes a third transmit antenna port; or, The pre-defined first antenna port group includes a first transmit antenna port and a third transmit antenna port, and the pre-defined second antenna port group includes a second transmit antenna port; or, The pre-divided first antenna port group includes a second transmit antenna port and a third transmit antenna port, and the pre-divided second antenna port group includes a first transmit antenna port. The method according to claim 10, wherein, The three antenna ports of the three-antenna-port SRS resource or the three antenna ports of the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the index order of the three transmit antenna ports; or, the three antenna ports of the three-antenna-port SRS resource or the three antenna ports of the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the order of the antenna port group. According to the method of claim 1, wherein, The method further includes: Receive control information for uplink transmission; wherein, the number of Probe Reference Signal Resource Indicators (SRIs) in the control information for uplink transmission is determined based on the number of SRS resource sets configured for uplink transmission by the first node and the content of the SRS resource sets. The method according to claim 16, wherein, The number of SRIs in the control information of the uplink transmission satisfies at least one of the following: Configure an SRS resource set, which includes 3 single-antenna-port SRS resources, wherein the SRI is ignored or has a quantity of 0; Configure an SRS resource set, which includes more than 3 single-antenna port SRS resources, and the number of SRIs is 1. Configure two SRS resource sets, one SRS resource set includes two single-antenna-port SRS resources, and the other SRS resource set includes one single-antenna-port SRS resource, wherein the SRI is ignored or the number is 0; Configure two SRS resource sets. One SRS resource set includes two or more single-antenna port SRS resources, and the other SRS resource set includes one or more single-antenna port SRS resources. The number of SRIs is 2, and each SRI corresponds to one SRS resource set. Configure three SRS resource sets, each SRS resource set including one single-antenna port SRS resource, wherein the SRI is ignored or the number is 0; Configure three SRS resource sets, each SRS resource set includes more than one single-antenna port SRS resource, the number of SRIs is 3, and each SRI corresponds to one SRS resource set. According to the method of claim 1, wherein, The method further includes: In the event of a conflict between the first SRS resource and the second SRS resource, the SRS is transmitted on the first SRS resource, and the transmission of the SRS on all or conflicting resources of the second SRS resource is abandoned; wherein, the priority of the first SRS resource is higher than the priority of the second SRS resource; the conflicting resource of the second SRS resource is the part of the second SRS resource that overlaps with the first SRS resource. The method according to claim 18, wherein, The first SRS resource is an aperiodic SRS resource, and the second SRS resource is a semi-persistent SRS resource or a periodic SRS resource; or, The first SRS resource is a semi-persistent SRS resource, and the second SRS resource is a periodic SRS resource. A method for configuring reference signal resources for detection, applied to a second node, the method comprising: Send SRS resource configuration to the first node, wherein the SRS resource configuration is used to configure at least one SRS resource group or one SRS resource. The method according to claim 20, wherein, The SRS resource group is a three-antenna-port SRS resource group, and the three-antenna-port SRS resource group includes one of the following: A single-antenna-port SRS resource and a two-antenna-port SRS resource; or, SRS resources for three single-antenna ports. The method according to claim 20, wherein, The SRS resource is a three-antenna-port SRS resource; wherein, the three-antenna-port SRS resource is obtained by abandoning one antenna port of the four-antenna-port SRS resource. The method according to claim 20, wherein, The SRS resource group satisfies at least one of the following: SRS resources in the same SRS resource group belong to the same SRS resource set or different SRS resource sets; SRS resources in different SRS resource groups belong to the same SRS resource set or different SRS resource sets; SRS resources in the same SRS resource group occupy the same frequency domain resources; SRS resources in different SRS resource groups occupy the same frequency domain resources; SRS resources in the same SRS resource group may occupy the same time domain resources or different time domain resources; or SRS resources in different SRS resource groups may occupy the same time domain resources or different time domain resources. The method according to claim 20, wherein, The method further includes: Receive the antenna transmit / receive capability reported by the first node, wherein the antenna transmit / receive capability includes any one of the following: 3T3R, T4R, 3T6R, 3T8R. The method according to claim 20, wherein, The first node is configured as 3T3R, and the SRS resource configuration is used to configure a three-antenna-port SRS resource group or a three-antenna-port SRS resource. The method according to claim 20, wherein, The first node is configured as 3T4R, and the SRS resource configuration is used to configure any of the following: Two three-antenna-port SRS resource groups; SRS resources with two three-antenna ports; A three-antenna-port SRS resource group and a three-antenna-port SRS resource; A three-antenna-port SRS resource group and a single-antenna-port SRS resource; or One SRS resource with three antenna ports and one SRS resource with one antenna port. The method according to claim 20, wherein, The first node is configured as 3T6R, and the SRS resource configuration is used to configure any of the following: Two three-antenna-port SRS resource groups; SRS resources with two three-antenna ports; or A three-antenna-port SRS resource group and a three-antenna-port SRS resource. The method according to claim 20, wherein, The first node is configured as 3T8R, and the SRS resource configuration is used to configure any of the following: Three three-antenna-port SRS resource groups; SRS resources with three three-antenna ports; Two three-antenna-port SRS resource groups and one three-antenna-port SRS resource; A three-antenna-port SRS resource and a two-antenna-port SRS resource group; Two three-antenna-port SRS resource groups and one two-antenna-port SRS resource. Two three-antenna-port SRS resources and one two-antenna-port SRS resource group; or Two three-antenna-port SRS resources and one two-antenna-port SRS resource. The method according to claim 20, wherein, The method further includes: The first node is sent with precoding indication information, which is used to indicate codewords from a partial coherent transmission codebook of the three transmit antenna ports supported by the first node; the three transmit antenna ports are divided into a first antenna port group and a second antenna port group, wherein the first antenna port group includes two transmit antenna ports and the second antenna port group includes one transmit antenna port. The method according to claim 29, wherein, In the partially coherent transmission codebook, the non-zero codebook elements associated with the first antenna port group are the same as the codebook elements in the fully coherent transmission codebook of the two antenna ports. The method according to claim 30, wherein, For any transport stream, the non-zero codebook elements in the partially coherent transport codebook are associated with either the first antenna port group or the second antenna port group. The method according to claim 29, wherein, The method further includes: Send a first indication message to the first node, the first indication message being used to indicate the division method of the first antenna port group and the second antenna port group. The method according to claim 29, wherein, The first antenna port group and the second antenna port group are pre-defined; Wherein, the pre-divided first antenna port group includes a first transmit antenna port and a second transmit antenna port, and the pre-divided second antenna port group includes a third transmit antenna port; or, The pre-defined first antenna port group includes a first transmit antenna port and a third transmit antenna port, and the pre-defined second antenna port group includes a second transmit antenna port; or, The pre-divided first antenna port group includes a second transmit antenna port and a third transmit antenna port, and the pre-divided second antenna port group includes a first transmit antenna port. The method according to claim 29, wherein, The three antenna ports of the three-antenna-port SRS resource or the three antenna ports of the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the index order of the three transmit antenna ports; or, the three antenna ports of the three-antenna-port SRS resource or the three antenna ports of the three-antenna-port SRS resource group are associated with the three transmit antenna ports in the order of the antenna port group. The method according to claim 20, wherein, The method further includes: Uplink transmission control information is sent to the first node, wherein the number of Probe Reference Signal Resource Indicators (SRIs) in the uplink transmission control information is determined based on the number of SRS resource sets configured for uplink transmission on the first node and the content of the SRS resource sets. The method according to claim 35, wherein, The number of SRIs in the control information of the uplink transmission satisfies at least one of the following: Configure an SRS resource set, which includes 3 single-antenna-port SRS resources, wherein the SRI is ignored or has a quantity of 0; Configure an SRS resource set, which includes more than 3 single-antenna port SRS resources, and the number of SRIs is 1. Configure two SRS resource sets, one SRS resource set includes two single-antenna-port SRS resources, and the other SRS resource set includes one single-antenna-port SRS resource, wherein the SRI is ignored or the number is 0; Configure two SRS resource sets. One SRS resource set includes two or more single-antenna port SRS resources, and the other SRS resource set includes one or more single-antenna port SRS resources. The number of SRIs is 2, and each SRI corresponds to one SRS resource set. Configure three SRS resource sets, each SRS resource set including one single-antenna port SRS resource, wherein the SRI is ignored or the number is 0; Configure three SRS resource sets, each SRS resource set includes more than one single-antenna port SRS resource, the number of SRIs is 3, and each SRI corresponds to one SRS resource set. A communication device, comprising: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method according to any one of claims 1-36. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method according to any one of claims 1-36. A computer program product, comprising: Computer program instructions, which, when executed by a processor, implement the method according to any one of claims 1-36.

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