Rank-sum resource set signaling technology for communication between multiple transmit and receive points

Abstract

Methods, systems, and apparatus for wireless communication are described, wherein a user equipment (UE) can transmit one or more uplink communications to multiple transmit-receive points (TRPs). Transmission parameters for each repetition may be based on parameters (e.g., the number of antenna ports, spatial domain filters or beams, rank or layer number, or any combination thereof) determined according to an indication of whether different probe reference signal (SRS) resource sets are to be used for these repetitions and the indicated SRS resources for each SRS resource set. This indication may include the same number of bits regardless of whether one SRS resource set or multiple SRS resource sets are used; and this indication may be based on the UE's previous configuration.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. Patent Application No. 17 / 538,870, filed November 30, 2021, entitled “RANK ANDRESOURCE SET SIGNALING TECHNIQUES FOR MULTIPLE TRANSMISSION-RECEPTION POINT COMMUNICATIONS”, and U.S. Provisional Patent Application No. 63 / 131,289, filed December 28, 2020, entitled “RANK ANDRESOURCE SET SIGNALING TECHNIQUES FOR MULTIPLE TRANSMISSION-RECEPTION POINT COMMUNICATIONS”, each of which is assigned to the assignee of this application. Technical Field

[0003] The following content relates to wireless communication, including rank-sum resource set signaling technology for multiple transmit-receive-point (TRP) communication. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems (such as Long Term Evolution (LTE) systems, LTE-A Advanced (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems can employ various technologies, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication from multiple communication devices, which may also be referred to as User Equipment (UE).

[0005] Some wireless communication systems can support communication using one or more antenna arrays at different devices. For example, a network can communicate with a UE using one or more transmit-receive points (TRPs), where each TRP and UE can have one or more antenna arrays to form a directional beam. Efficient communication between each UE and one or more TRPs can help improve network throughput, latency, and reliability, and therefore further improvements to techniques for efficient communication are desirable.

[0006] Overview

[0007] The described techniques relate to improved methods, systems, apparatuses, and devices for rank and resource set signaling techniques supporting communication for multiple Transmitter Receiver Points (TRPs). Various aspects provide techniques for communication between a User Equipment (UE) and multiple TRPs, wherein the UE can transmit uplink communication to one or more TRPs to enhance the likelihood of successful uplink communication reception. In some cases, the UE can transmit uplink communication based on parameters determined according to one or more Probe Reference Signal (SRS) resources (e.g., the number of antenna ports, spatial domain filters or beams, rank or layer number, or any combination thereof). The SRS resources can be selected from one or two SRS resource sets configured at the UE and can be indicated in control information provided to the UE.

[0008] In some scenarios, the base station or TRP may transmit configuration information to the UE indicating the number of bits to be included in a control information field indicating one or two SRS resource sets to which the first uplink communication will be associated. Based on this configuration information, the UE may receive the control information, determine whether one or two SRS resource sets are associated with the first uplink communication, and transmit the first uplink communication based on that one or two SRS resource sets. In some scenarios, the number of bits in the control information is determined based on the maximum number of bits required to indicate SRS resources from one SRS resource set or SRS resources from two SRS resource sets. In other scenarios, available combinations of SRS resources from one or two SRS resource sets may be jointly decoded and transmitted in the same resource indicator field having a number of bits based on the number of available combinations of SRS resources.

[0009] A method for wireless communication at a UE is described. The method may include: receiving control information configuration from a base station, the control information configuration indicating the number of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two SRS resource sets; receiving first control information communication from the base station, the first control information communication including the control information field and scheduling the first uplink communication for the UE; determining, based on the first control information communication and the control information configuration, whether one or two SRS resource sets are associated with the first uplink communication; and transmitting the first uplink communication to the base station based on the determination.

[0010] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: receive control information configuration from a base station, the control information configuration indicating a number of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two SRS resource sets; receive first control information communication from the base station, the first control information communication including the control information field and scheduling the first uplink communication for the UE; determine, based on the first control information communication and the control information configuration, whether one or two SRS resource sets are associated with the first uplink communication; and based on the determination, transmit the first uplink communication to the base station.

[0011] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving control information configuration from a base station, the control information configuration indicating the number of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two SRS resource sets; means for receiving first control information communication from the base station, the first control information communication including the control information field and scheduling the first uplink communication for the UE; means for determining, based on the first control information communication and the control information configuration, whether one or two SRS resource sets are associated with the first uplink communication; and means for transmitting the first uplink communication to the base station based on the determination.

[0012] A non-transient computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: receive control information configuration from a base station, the control information configuration indicating a number of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two SRS resource sets; receive first control information communication from the base station, the first control information communication including the control information field and scheduling the first uplink communication for the UE; determine, based on the first control information communication and the control information configuration, whether one or two SRS resource sets are associated with the first uplink communication; and based on the determination, transmit the first uplink communication to the base station.

[0013] In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, the determination may include operations, features, means, or instructions for determining the number of SRS resources for each SRS resource set associated with the first uplink communication based on the first control information communication and the control information configuration. In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, the determination may include operations, features, means, or instructions for determining whether one or two SRS resource sets are associated with the first uplink communication based on a first bit of the first control information communication, wherein the control information field includes a set of bits indicating the number of SRS resources for each SRS resource set associated with the first uplink communication. In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, the first bit may be an initial bit of the control information field or may be in a separate field in the first control information communication.

[0014] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the bit set includes the maximum of a first number of bits or a second number of bits, the first number of bits being determined based on a first maximum rank when one SRS resource set is associated with a first uplink communication, and the second number of bits being determined based on a second maximum rank when two SRS resource sets are associated with the first uplink communication. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second maximum rank is less than the first maximum rank. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second maximum rank is a fixed or configured value provided with the control information configuration. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the configured value of the second maximum rank may be based on the capability of the UE transmitted to the base station. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, zero padding may be used in the bit set when the number of bits necessary to indicate the rank of one or two SRS resource sets is less than the total number of bits in the bit set.

[0015] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the first bit count is determined based on the fact that the first SRS resource set has a different number of SRS resources than the second SRS resource set. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the first bit count may be associated with the first SRS resource set. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the first bit count may be associated with either the first SRS resource set or the second SRS resource set, and a separate bit in the control information field provides an indication of which of the first or second SRS resource sets is associated with the first uplink communication.

[0016] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second number of bits may be associated with both a first SRS resource set and a second SRS resource set, and a first subset of the second number of bits indicates one or more SRS resources within the first SRS resource set, and a second subset of the second number of bits indicates one or more SRS resources within the second SRS resource set. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second number of bits may be associated with both a first SRS resource set and a second SRS resource set, and a joint indication of one or more SRS resources within each SRS resource set is provided based on the same number of layers associated with each SRS resource set.

[0017] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the determination may include operations, features, means or instructions for: decoding the control information field to identify a set of bits, and identifying the number of SRS resources for each SRS resource set associated with the first uplink communication based on a mapping for the set of bits.

[0018] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a first SRS resource set may be ordered before a second SRS resource set, and the number of bits included in the control information field is determined to be the sum of a first number of possible SRS resources associated with a first SRS resource set when a single SRS resource set is associated with a first uplink communication and a second number of possible SRS resources associated with both the first and second SRS resource sets when both are associated with the first uplink communication.

[0019] In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, a first SRS resource set or a second SRS resource set may be ordered as an initial SRS resource set, and the number of bits included in the control information field is determined to be the sum of a first number of possibilities indicating a first number of SRS resources associated with the initial SRS resource set when a single SRS resource set is associated with the first uplink communication, and a second number of possibilities indicating a second number of SRS resources associated with both the first and second SRS resource sets when both are associated with the first uplink communication. In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, different bit values ​​of the control information field are mapped to different possibilities of the number of SRS resources associated with the first uplink communication.

[0020] A method for wireless communication at a base station is described. The method may include: transmitting control information configuration to a UE, the control information configuration indicating the amount of bits to be included in a control information field indicating whether a first uplink communication will be associated with a detection reference signal resource set (SRS) or two SRS resource sets; determining whether one or two SRS resource sets are associated with the first uplink communication; transmitting first control information communication to the UE, the first control information communication including the control information field, and scheduling the first uplink communication for the UE and indicating whether one or two SRS resource sets are associated with the first uplink communication; and receiving the first uplink communication from the UE based on the first control information communication.

[0021] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: transmit control information configuration to a UE, the control information configuration indicating the number of bits to be included in a control information field indicating whether a first uplink communication will be associated with a detection reference signal resource set (SRS) or two SRS resource sets; determine whether one or two SRS resource sets are associated with the first uplink communication; transmit first control information communication to the UE, the first control information communication including the control information field, and schedule the first uplink communication for the UE and indicate whether one or two SRS resource sets are associated with the first uplink communication; and receive the first uplink communication from the UE based on the first control information communication.

[0022] Another apparatus for wireless communication at a base station is described. The apparatus may include: means for transmitting control information configuration to a UE, the control information configuration indicating the amount of bits to be included in a control information field indicating whether a first uplink communication will be associated with a probe reference signal resource set (SRS) or two SRS resource sets; means for determining whether one or two SRS resource sets are associated with the first uplink communication; means for transmitting first control information communication to the UE, the first control information communication including the control information field, and scheduling the first uplink communication for the UE and indicating whether one or two SRS resource sets are associated with the first uplink communication; and means for receiving the first uplink communication from the UE based on the first control information communication.

[0023] A non-transient computer-readable medium is described, storing code for wireless communication at a base station. The code may include instructions executable by a processor to: transmit control information configuration to a UE, the control information configuration indicating a number of bits to be included in a control information field indicating whether a first uplink communication will be associated with one or two SRS resource sets; determine whether one or two SRS resource sets are associated with the first uplink communication; transmit first control information communication to the UE, the first control information communication including the control information field, and schedule the first uplink communication for the UE and indicate whether one or two SRS resource sets are associated with the first uplink communication; and receive the first uplink communication from the UE based on the first control information communication.

[0024] In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, the control information field further indicates the number of SRS resources associated with the first uplink communication. In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, a first bit of the first control information communication indicates whether one or two SRS resource sets are associated with the first uplink communication, and wherein the control information field includes a set of bits indicating the number of SRS resources for each SRS resource set associated with the first uplink communication. In some examples of the methods, apparatuses (devices), and non-transient computer-readable media described herein, the first bit may be an initial bit of the control information field, or it may be in a separate field within the first control information communication.

[0025] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the bit set includes the maximum of a first number of bits or a second number of bits, the first number of bits being determined based on a first maximum rank when one SRS resource set is associated with a first uplink communication, and the second number of bits being determined based on a second maximum rank set when two SRS resource sets are associated with the first uplink communication. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second maximum rank is less than the first maximum rank. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second maximum rank may be a fixed value or a configured value provided with the control information configuration. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the configured value of the second maximum rank may be based on the capability of the UE transmitted to the base station. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, zero padding may be used in the bit set when the number of bits necessary to indicate the rank of one or two SRS resource sets is less than the total number of bits in the bit set.

[0026] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the first bit count may be determined based on the fact that the first SRS resource set has a different number of SRS resources than the second SRS resource set. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the first bit count may be associated with the first SRS resource set. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the first bit count may be associated with either the first SRS resource set or the second SRS resource set, and a separate bit in the control information field provides an indication of which of the first or second SRS resource sets is associated with the first uplink communication.

[0027] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second number of bits may be associated with both a first SRS resource set and a second SRS resource set, and a first subset of the second number of bits indicates one or more SRS resources within the first SRS resource set, and a second subset of the second number of bits indicates one or more SRS resources within the second SRS resource set. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, the second number of bits may be associated with both a first SRS resource set and a second SRS resource set, and a joint indication of one or more SRS resources within each SRS resource set is provided based on the same number of layers associated with each SRS resource set.

[0028] Some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein may further include operations, features, means, or instructions for: determining the number of SRS resources for each SRS resource set associated with the first uplink communication, identifying a mapping between a code point and the determined number of SRS resources, and wherein the control information field indicates the code point. In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, different bit values ​​of the control information field may be mapped to different possibilities of SRS resources associated with the first uplink communication.

[0029] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a first SRS resource set may be ordered before a second SRS resource set, and the amount of bits included in the control information field is determined to be the sum of a first number of possible SRS resources associated with the first SRS resource set when a single SRS resource set is associated with the first uplink communication and a second number of possible SRS resources associated with both the first and second SRS resource sets when both are associated with the first uplink communication.

[0030] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a first SRS resource set or a second SRS resource set may be ordered as an initial SRS resource set, and the number of bits included in the control information field is determined to be the sum of a first number of possible SRS resources associated with the initial SRS resource set when a single SRS resource set is associated with the first uplink communication and a second number of possible SRS resources associated with both the first and second SRS resource sets when both are associated with the first uplink communication. Brief description of the attached diagram

[0032] Figure 1 Examples of wireless communication systems that support rank and resource set signaling techniques for multiple transmit-receive-point (TRP) communication, according to various aspects of this disclosure, are explained.

[0033] Figure 2 An example of a wireless communication system that supports rank and resource set signaling technology for multiple TRP communications, according to various aspects of this disclosure, is explained.

[0034] Figure 3 Examples of control and shared channel communication supported by various aspects of this disclosure for rank and resource set signaling techniques for multiple TRP communications are explained.

[0035] Figure 4 Examples of control information supporting rank and resource set signaling techniques for multiple TRP communications are explained according to various aspects of this disclosure.

[0036] Figure 5 An example of the process flow for rank and resource set signaling techniques supporting multiple TRP communications is explained according to various aspects of this disclosure.

[0037] Figure 6 and 7 A block diagram of an apparatus supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure.

[0038] Figure 8 A block diagram of a communication manager supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure.

[0039] Figure 9 A diagram of a system including an apparatus supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure.

[0040] Figure 10 and 11A block diagram of an apparatus supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure.

[0041] Figure 12 A block diagram of a communication manager supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure.

[0042] Figure 13 A diagram of a system including an apparatus supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure.

[0043] Figures 14 to 19 A flowchart illustrating a method for supporting rank and resource set signaling techniques for multiple TRP communications, according to various aspects of this disclosure, is shown.

[0044] Detailed description

[0045] In some wireless communication systems, a network may use one or more Transmitter Points (TRPs) to communicate with User Equipment (UE). For example, the network may use a single TRP at a single base station, multiple TRPs at the same base station, or multiple TRPs across multiple base stations to communicate with the UE. In such systems, the transmission parameters for each device (e.g., each UE, each TRP, each base station) may vary across the system (e.g., due to different operating frequencies, different beams, different numbers of antenna ports, etc.), and therefore separate parameters may be indicated for communication with different TRPs. For example, in a multi-TRP system, two or more TRPs may coordinate and configure the UE to transmit multiple repetitive sets of uplink communications, one repetitive set pointing to a first TRP and a different repetitive set pointing to a second TRP. Such techniques can increase the likelihood that at least one TRP will successfully receive uplink communications, and thus enhance communication reliability. However, when uplink transmissions to different TRPs have different transmission parameters, it may be desirable to provide flexible indications of the different transmission parameters to give the UE sufficient information for transmissions to different TRPs. Existing configuration and control information technologies may, in some situations, fail to provide sufficient information for uplink communication to multiple TRPs. Various aspects of this disclosure provide enhanced techniques that allow for flexible and efficient signaling of configuration and control information associated with multiple TRPs.

[0046] In some scenarios, the UE can transmit uplink communication based on parameters determined from probe reference signal (SRS) resources, such as the number of antenna ports, spatial domain filters or beams, rank or layer number, or any combination thereof. SRS resources can be selected from SRS resource sets configured at the UE, and these SRS resources can be indicated in control information provided to the UE. In some scenarios, multiple SRS resource sets can be configured at the UE, and one or more indicators in the control information (e.g., downlink control information (DCI)) can be mapped to SRS resources in one or more of these SRS resource sets.

[0047] In some deployments, SRS resources can be used to indicate uplink shared channel (e.g., Physical Uplink Shared Channel (PUSCH)) transmission parameters as well as SRS transmission parameters. In some cases, two types of PUSCH transmission are supported: codebook PUSCH transmission and non-codebook PUSCH transmission. For non-codebook-based uplink transmission, the UE can be configured with an SRS resource set where "Use" is set to "Non-codebook". In such cases, up to four SRS resources within an SRS resource set can be configured for the UE, and each SRS resource has an associated antenna port. The SRS Resource Indicator (SRI) field in DCI transmissions (e.g., DCI for scheduling PUSCH) indicates one or more SRS resources, and the number of indicated SRS resources determines the rank (e.g., layer number) used for the scheduled PUSCH. PUSCH communication is transmitted using the same precoder and spatial domain filters (e.g., beamforming) as the indicated SRS resources. The SRI may include a bit field that is mapped to an index of a configured SRS resource in the SRS resource set, wherein the size of the bit field is based on the number of configured SRS resources in the SRS resource set and the number of layers of PUSCH transport.

[0048] In situations where multiple instances of uplink communication (e.g., the same transport block (TB)) are transmitted to multiple TRPs, configuring multiple SRS resource sets to provide additional options for indicating uplink transmission parameters for those multiple uplink communications can be useful. For example, if the first link between the UE and the first TRP is blocked, the first repetition of the uplink transmission to the first TRP may not be successfully received. However, if the second link between the UE and the second TRP is not blocked, the second repetition of the uplink transmission to the second TRP can be successfully received and decoded. Thus, such techniques can increase communication diversity and thereby enhance reliability and efficiency in situations where one or more links may experience relatively poor channel conditions. However, in existing deployments, all repetitions are transmitted using the same beam (e.g., the SRI field of the DCI is applied to all repetitions), and when different PUSCH repetitions are intended to be received at different TRPs / panels / antennas on the base station side, such a identical beam for all repetitions may not be suitable for reception at each of these different TRPs / panels / antennas. According to the techniques discussed herein, a base station or TRP can be configured with multiple SRS resource sets, which can be used for different repetitions of different TRPs / panels / antennas. In some cases, different PUSCH transmission timings (i.e., repetitions) corresponding to the same TB are transmitted in different time slots or mini-time slots, and the number of repetitions can be configured (e.g., via Radio Resource Control (RRC) signaling) or can be dynamically indicated (e.g., in the DCI that schedules uplink communication, such as in the Time Domain Resource Allocation (TDRA) field).

[0049] In cases where multiple SRS resource sets are configured (e.g., two SRS resource sets configured for two TRPs), simply transmitting two separate SRI fields in the DCI can result in increased DCI overhead because twice the number of bits are required to provide these separate SRI fields. According to some aspects of this disclosure, resource indications for multiple different SRS resource sets can be provided with reduced overhead compared to simply transmitting two SRI fields. Furthermore, resource indications with the same number of bits can be provided in the DCI so that different SRS resources from one or more SRS resource sets can be indicated in information fields of consistent size, which can provide more efficient processing at the UE (e.g., the UE does not have to blindly decode multiple candidate DCI sizes or formats).

[0050] This type of technology provides that SRS resources for uplink communication can be indicated for different modes, including a first mode in which a single SRS resource set is used for uplink communication (e.g., single-beam PUSCH and / or transmission to a single TRP), and a second mode in which two SRS resource sets are used for uplink communication (e.g., for two overlapping sets, PUSCH is transmitted with two corresponding beams and / or transmitted to multiple TRPs). In the case of the first mode, the maximum number of layers that can be indicated can be denoted as L. max Therefore, a resource indication (e.g., SRI) can indicate up to L resources within an SRS resource set. max There are 10 SRS resources. In the second mode scenario, the maximum number of tiers that can be indicated for each SRS resource set can be denoted as L′. max For the associated SRS resource set, L′ max Less than L max Therefore, when using the second mode, it is less likely to indicate one or more SRS resources, and two indications are required (i.e., one associated with the first SRS resource set and the other associated with the second SRS resource set). L′ max Less than L max The reason is that when a base station chooses to allocate uplink transmissions using multiple repetitions on different beams (e.g., due to relatively poor channel conditions, reliability objectives for communication, latency objectives for communication, etc.), the base station can schedule the transmission with fewer layers to provide enhanced reliability. Therefore, the number of bits required in the DCI for the SRI fields can be determined based on the maximum number of bits required for the first and second modes, according to various techniques discussed herein. In other cases, information about which mode will be used and associated resource indications from one or more SRS resource sets can be jointly decoded and indicated by the same field (e.g., the same set of bits) in the DCI (e.g., providing a mapping for the mode and SRS resources within the SRS resource sets).

[0051] In some cases, the base station or TRP may transmit configuration information to the UE indicating the number of bits to be included in a control information field indicating one or two SRS resource sets to which a first uplink communication will be associated. Based on this configuration information, the UE may receive the control information and determine whether one or two SRS resource sets are associated with the first uplink communication, and transmit the first uplink communication based on the one or two SRS resource sets and the indicated SRS resources within those sets. In some cases, the number of bits in the control information is determined based on the maximum number of bits required to indicate SRS resources from one or two SRS resource sets. In other cases, available combinations of SRS resources from one or two SRS resource sets may be jointly decoded and transmitted in the same resource indicator field having a number of bits based on the number of available combinations of SRS resources.

[0052] The aspects of this disclosure are initially described in the context of wireless communication systems. These aspects are further illustrated and described by way of process flow diagrams, apparatus diagrams, system diagrams, and flowcharts relating to multiple repeating SRS resources and rank-sum resource set signaling techniques for multiple TRP communications.

[0053] Figure 1 Examples of a wireless communication system 100 supporting rank and resource set signaling techniques for multiple TRP communications according to various aspects of this disclosure are described. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0054] Base station 105 can be distributed across a geographical area to form wireless communication system 100, and can be different types of devices or devices with different capabilities. Base station 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, and UE 115 and base station 105 can establish one or more communication links 125 on the coverage area 110. Coverage area 110 can be an example of a geographical area over which base station 105 and UE 115 can support signal communication according to one or more radio access technologies.

[0055] Each UE 115 can be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. Each UE 115 can be a different type of device or a device with different capabilities. Figure 1 The document describes some example UE 115s. The UE 115 described herein can communicate with various types of devices, such as other UE 115s, base station 105, or network equipment (e.g., core network nodes, relay equipment, integrated access and backhaul (IAB) nodes, or other network equipment). Figure 1 As shown in the image.

[0056] Each base station 105 may communicate with the core network 130, or with each other, or both. For example, base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105), indirectly (e.g., via the core network 130), or directly and indirectly on backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul link 120 may be or include one or more radio links.

[0057] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base transceiver station, radio base station, access point, radio transceiver, B node, evolved B node (eNB), next-generation B node or gigabit B node (any of which may be referred to as gNB), home B node, home evolved B node, or other suitable terms.

[0058] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0059] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, as well as base station 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown in the image.

[0060] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the radio spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used in conjunction with frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0061] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. The carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by UE 115. The carrier may operate in an autonomous mode in which initial acquisition and connection can be performed by UE 115 via that carrier, or in a non-autonomous mode in which the carrier may connect to carriers anchored using different carriers (e.g., different carriers of the same or different radio access technologies).

[0062] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105, or downlink transmission from base station 105 to UE 115. The carrier may carry downlink or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0063] A carrier may be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several defined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz) of a carrier for a particular radio access technology. Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication over a specific carrier bandwidth, or may be configurable to support communication over a single carrier bandwidth within a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate over a portion (e.g., a subband, BWP) or all of the carrier bandwidth.

[0064] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the code rate of the modulation scheme, or both). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate the UE 115 can achieve. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and using multiple spatial layers can further improve the data rate or data integrity of communication with the UE 115.

[0065] One or more sets of parameters can be supported for a carrier, where the parameter set may include the subcarrier spacing (Δf) and the cyclic prefix. A carrier can be divided into one or more BWPs with the same or different parameter designs. In some examples, the UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communication for the UE 115 can be limited to one or more active BWPs.

[0066] The time interval of base station 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period T. s =1 / (Δf) max ·N f ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, while N fThis can represent the maximum supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0067] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into several time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) symbols. f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier interval or the operating frequency band.

[0068] A subframe, time slot, mini-slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0069] Physical channels can be multiplexed on a carrier using various techniques. Physical control channels and physical data channels can be multiplexed on a downlink carrier, for example, using one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by the number of symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more of the UEs 115 can monitor or search control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information in a control information format having a given payload size. The search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set configured to send control information to a specific UE 115.

[0070] Each base station 105 may provide communication coverage via one or more cells (e.g., macrocells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with base station 105 (e.g., on a carrier) and may be associated with an identifier used to distinguish adjacent cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or others). In some examples, a cell may also refer to a geographic coverage area 110 or a portion of geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. The extent of such cells may vary from smaller areas (e.g., structures, subsets of structures) to larger areas depending on various factors (such as the capabilities of base station 105). For example, a cell may be or include buildings, subsets of buildings, or external space between or overlapping geographic coverage areas 110, among other examples.

[0071] Macrocells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access for UEs 115 that have service subscriptions with a network provider supporting the macrocell. Small cells may be associated with a lower-power base station 105 (compared to macrocells) and may operate in the same or different (e.g., licensed or unlicensed) frequency bands as macrocells. Small cells may provide unrestricted access to UEs 115 that have service subscriptions with a network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a Closed Subscriber Group (CSG), or UEs 115 associated with a user in a home or office). Base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0072] In some examples, a carrier can support multiple cells and can be configured with different cells based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0073] In some examples, base station 105 may be mobile, and thus provide communication coverage to mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different radio access technologies to provide coverage to various geographic coverage areas 110.

[0074] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that have integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents it to people interacting with the application. Some UE 115 devices may be designed to collect information or automate the behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wilderness survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial toll collection.

[0075] Wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private or group communication and may be supported by one or more mission-critical services, such as Mission-Critical Talk-to-Talk (MCPTT), Mission-Critical Video (MCVideo), or Mission-Critical Data (MCData)). Support for mission-critical functions may include prioritization of services, and mission-critical services may be used for public safety or general business applications. The terms ultra-reliable, low latency, mission-critical, and ultra-reliable low latency are used interchangeably herein.

[0076] In some examples, UE 115 may also be able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UE 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115s in this group may be outside the geographic coverage area 110 of base station 105 or may be unable to receive transmissions from base station 105 for other reasons. In some examples, the group of UEs 115s communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between the individual UEs 115 without involving base station 105.

[0077] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles may signal information related to traffic conditions, signaling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate via vehicle-to-network (V2N) communication through one or more network nodes (e.g., base station 105) with roadside infrastructure (such as roadside units), or with the network, or with both.

[0078] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC). The EPC or 5GC may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by base station 105 associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity may be connected to one or more network operator IP services 150. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0079] Some network devices (such as base station 105) may include sub-components, such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio headends and ANCs) or combined into a single network device (e.g., base station 105).

[0080] Wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 MHz to 300 GHz. Generally, the 300 MHz to 3 GHz band is referred to as a UHF band or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter. UHF waves can be blocked or redirected by buildings and environmental features, but these waves can penetrate various structures sufficiently for macrocells to provide service to UE 115 located indoors. Compared to transmissions using smaller frequencies and longer waves in the lower HF or VHF portions of the spectrum below 300 MHz, UHF wave transmission can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0081] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) zoning using a frequency band from 3 GHz to 30 GHz (also known as the centimeter band) or in the extremely high frequency (EHF) zoning using a spectrum (e.g., from 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices can be smaller and more closely spaced than UHF antennas. In some examples, this can facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency zonings, and the frequency band usage specified across these frequency zonings may vary by country or regulatory authority.

[0082] Wireless communication system 100 may utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio spectrum bands, devices (such as base station 105 and UE 115) may employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands may be based on carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in licensed frequency bands. Operation in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0083] Base station 105 or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0084] Base station 105 or UE 115 can use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique is known as spatial multiplexing. For example, a transmitting device may transmit multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0085] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array, such that some signals propagating relative to a particular orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include the transmitting or receiving device applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element may be defined by a beamforming weight set associated with a particular orientation (e.g., the antenna array relative to the transmitting or receiving device, or relative to some other orientation).

[0086] Base station 105 or UE 115 may use beamsweeping techniques as part of beamforming operations. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by base station 105 in different directions. For example, base station 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by the transmitting device (such as base station 105) or the receiving device (such as UE 115)) to identify the beam direction that base station 105 will use for later transmission or reception.

[0087] Some signals (such as data signals associated with a specific receiving device) may be transmitted by base station 105 in a single beam direction (e.g., the direction associated with the receiving device (such as UE 115)). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0088] In some examples, transmissions performed by a device (e.g., by base station 105 or UE 115) may be executed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate combined beams for transmission (e.g., from base station 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and this feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 may transmit reference signals that may be precoded or unprecoded (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)). UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0089] A receiver device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiver device may attempt multiple receive directions by: receiving via different antenna subarrays; processing received signals according to different antenna subarrays; receiving according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing received signals according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array, any of which may be referred to as "listening" according to different receive configurations or receive directions. In some examples, the receiver device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0090] Additionally, the base station 105 in the wireless communication system 100 may include one or more TRPs. Each TRP may be associated with one or more antenna ports, beams, and beam indices. In some cases, the UE 115 may transmit one or more uplink communications to multiple TRPs, and such communications may include multiple repetitions of uplink communications to multiple TRPs to enhance the probability of successfully receiving the uplink communications. In some cases, the UE 115 may transmit uplink communications based on parameters determined according to SRS resources associated with the uplink communications (e.g., the number of antenna ports, spatial domain filters or beams, rank or layer number, or any combination thereof). SRS resources may be selected from one or more SRS resource sets configured at the UE 115 and may be indicated in control information provided to the UE 115.

[0091] Figure 2 Examples of a wireless communication system 200 supporting rank-sum resource set signaling technology for multiple TRP communications according to various aspects of this disclosure are described. For example, the wireless communication system 200 includes base stations 105-a and 105-b, and UE 115-a, which may be referenced... Figure 1Examples of the corresponding devices described herein. It should be understood that references to specific wireless devices (e.g., UE, TRP, base station) in the following figures are provided for illustrative purposes, and different wireless devices not specifically mentioned herein may be used interchangeably with those described herein. Similarly, in some cases, the operations described by UE 115 may be performed by base station 105 (or TRP), and vice versa. In some examples, multiple TRPs may each be an independent TRP or may be part of one base station 105 or different base stations 105. Additionally or alternatively, base station 105 or TRP may be a component or example of an IAB node, a repeater node (e.g., configured with some retransmission capability), etc. Furthermore, UE 115-a may be an example of a client equipment (CPE), a sidelink node, a repeater node, etc.

[0092] (For example,) a first base station 105-a (associated with a first TRP) can provide coverage area 110-a, and (for example,) a second base station 105-b (associated with a second TRP) can provide coverage area 110-b. Additionally, each base station 105 can communicate with UE 115-a on one or more communication links. For example, the first base station 105-a can transmit downlink communication to UE 115-a via link 205, and UE 115-a can transmit uplink communication to the first base station 105-a via link 210. In this example, UE 115-a can also transmit uplink communication to the second base station 105-b via link 215. In some examples, base station 105 and UE 115-a can communicate using specific directional beams identified by one or more beam training protocols.

[0093] In some cases, to allow more reliable uplink communication to the two base stations 105, UE 115-a may be configured with two SRS resource sets. SRS resources from one or both of these SRS resource sets may be indicated by resource indications (e.g., one or more SRI fields) transmitted to UE 115-a in control information 225. In some cases, UE 115-a may receive configuration information 220 that configures multiple SRS resource sets and specifies whether one or more SRS resource sets should be used, and the number of bits of SRS resources within each SRS resource set. For example, configuration information 220 may be configuration information signaled using RRC. The resource indications provide a first mode for one of the SRS resource sets to be used for the associated first uplink transmission 230 to the first base station 105-a, and an indication of the SRS resources within that SRS resource set. Alternatively, the resource indication may provide a second mode in which multiple SRS resource sets will be used for the associated first uplink transmission 230 to the first base station 105-a and the second uplink transmission 235 to the second base station, together with the associated SRS resources within each SRS resource set.

[0094] In some cases, for dynamic indication of a first mode versus a second mode via control information 225 (e.g., for DCI of non-codebook-based PUSCH), the number of bits required to indicate SRS resources within one (in the first mode) or two (in the second mode) SRS resource sets associated with the PUSCH repetition can be determined as: 1 + max(X, Y). In some cases, one bit within control information 225 will be used to indicate the first mode (one SRS resource set) versus the second mode (two SRS resource sets). For example, this bit could be the first bit of the SRI field of control information 225, or it could be a separate field. The value X is the value indicating one or more (up to L) resources within one SRS resource set in the case where the first mode is indicated. max The number of bits required for one (or up to L′) SRS resource, and the value Y indicates one or more (up to L′) SRS resources within the first SRS resource set in the case of indicating the second mode. max The number of bits required for each SRS resource plus the number of bits indicating one or more (up to L′) within the second SRS resource set. max The number of bits required for each) SRS resource (where L′ max <L max In some cases, L′ max It can be a fixed value (e.g., if only single-layer transmission is allowed for the second mode, then L′) max =1), or it can be configured via RRC, which can also vary with UE 115-a capability signaling.

[0095] In some cases, the size of control information 225 can be aligned such that the same number of bits are used to signal both the first mode information and the second mode information. In some cases, for size alignment, if X > Y (i.e., max(X, Y) = X) and the second mode is indicated (i.e., Y bits are needed), zero-padding can be used, and (XY) zeros can be appended to or prepended to the indication field in control information 225 (e.g., XY least significant or most significant bits are set to zero). Alternatively, if X > X (i.e., max(X, Y) = Y) and the first mode is indicated (i.e., X bits are needed), then (YX) zeros can be appended to or prepended to the indication field in control information 225 (e.g., YX least significant or most significant bits are set to zero).

[0096] In some cases, it is assumed that the first SRS resource set is configured with There are one SRS resource set and the second SRS resource set is configured with... For each SRS resource, the values ​​X and Y can be determined as:

[0097] For X (in the case of the first mode), it is used to indicate one or more (up to L) within an SRS resource set. max (Number of bits in each) SRS resource:

[0098] Scenario 1: If this SRS resource set is always the first SRS resource set, then

[0099]

[0100] Scenario 2: If this SRS resource set can be either the first SRS resource set or the second SRS resource set, then

[0101]

[0102] This 1 bit will indicate either the first SRS resource set or the second SRS resource set, and This is because when indicating an SRS resource set with a large number of SRS resources, the maximum number needs to be considered.

[0103] For Y (in the case of the second mode, it is used to indicate one or more (up to L′) within the first SRS resource set. max The number of bits for each SRS resource plus the bits used to indicate one or more (up to L′) within the second SRS resource set. max (Number of bits in each) SRS resource:

[0104] Scenario 1 (Separate Instructions):

[0105]

[0106] Scenario 2 (Joint indication, assuming the actual number of tiers (i.e., the number of SRS resources indicated within each set) is the same for both duplicate sets):

[0107]

[0108] Alternatively, in some cases, a joint indication of one or two SRS resource sets, along with the indicated SRS resources of each SRS resource set, can be provided. In such cases, for a dynamic indication of the first mode compared to the second mode (e.g., via DCI for a non-codebook-based PUSCH) and for an indication of SRS resources within one (in the first mode) or two (in the second mode) SRS resource sets associated with a PUSCH repetition, an SRI field can be jointly decoded to indicate one of these possibilities, including:

[0109] Case 1 (An SRS resource set is always the first SRS resource set): The number of bits required is:

[0110]

[0111] The first item (i.e., The first pattern indicates the number of possible SRS resources within the first SRS resource set, and the second pattern indicates the number of possible SRS resources within either the first or second SRS resource set, wherein the number of SRS resources indicated (across the first and second sets) is the same.

[0112] Scenario 2 (An SRS resource set can be either the first set or the second set): The required number of bits is:

[0113]

[0114] The first two items indicate: the first mode indicates the number of possible SRS resources within either the first or second SRS resource set, and the third item indicates: the second mode indicates the number of possible SRS resources within either the first or second SRS resource set, wherein the number of indicated SRS resources (across the first and second sets) is the same. Using this technique, each code point of the union field is mapped to one of the possibilities to be used in the SRS resource set and the indicated SRS resources for each set.

[0115] For example, assuming L max =4, L′ max=1. If the separate SRI fields are simply transmitted, then the two SRI fields require 8 bits (4 bits for each SRI field). In the case without joint decoding, assuming case 2 for X and case 1 / case 2 for Y (the result is the same in this example), then 6 bits are required:

[0116]

[0117]

[0118] Assuming X is case 1, and Y is case 1 / case 2 (the result is the same in this example), then 5 bits are required:

[0119]

[0120] In the case of using joint decoding, 6 bits are required:

[0121]

[0122] Assuming scenario 1: 5 bits are required

[0123]

[0124] In another example, assume L max =2, L′ max =1. If the separate SRI fields are simply transmitted, 7 bits are needed (two SRI fields, the first with 4 bits; the second with 3 bits). In the case without joint decoding, assuming case 2 (for both X and Y): 1 + max(X, Y) = 1 + max(1 + 4, 4) = 6 bits are needed. In the case with joint decoding, assuming case 2: 1 + max(X, Y) = 1 + max(1 + 4, 4) = 6 bits are needed. Each bit. Accordingly, using the techniques described herein, signaling overhead can be reduced compared to a separate SRI field used for DCI transmission.

[0125] Figure 3 Examples of control and shared channel communication 300 supporting rank and resource set signaling techniques for multiple TRP communications according to various aspects of this disclosure are explained. For example, control and shared channel communication 300 can be implemented in a manner including, as described in reference... Figure 1 and Figure 2The wireless communication system described herein uses UE 115 and base station 105. It should be understood that references to specific wireless devices (e.g., UE, TRP, base station) in the exemplary figures are provided for illustrative purposes, and different wireless devices not specifically mentioned herein may be used interchangeably with those described herein. Similarly, in some cases, the operations described by UE 115 may be performed by base station 105, and vice versa. In some examples, the base station may be an example of one or more TRPs, or may include one or more TRPs. Additionally or alternatively, the base station may each be an example of an IAB node, a repeater node (e.g., configured with some retransmission capability), etc. Furthermore, the UE may be an example of a CPE, a sidelink node, a repeater node, etc.

[0126] In this example, the scheduling DCI 305 can schedule uplink transmissions with a first repeat set 310 and a second repeat set 315. Furthermore, the first repeat set 310 may include a first repeat 310-a and a second repeat 310-b, both of which are transmitted to a first TRP. Similarly, the second repeat set 315 may include a third repeat 315-a and a fourth repeat 315-b, both of which are transmitted to a second TRP. Each repeat in both the first repeat set 310 and the second repeat set 315 may include the same TB, and therefore these multiple repeats at up to multiple different TRPs can increase the probability of successfully decoding the TB at one or both of the first and second TRPs. As discussed herein, the scheduling DCI 305 may include a resource indication field indicating whether one SRS resource set or two SRS resource sets are used, and the SRS resources within each SRS resource set, as referenced... Figure 2 The subject of discussion.

[0127] Figure 4 Examples of control information 400 supporting rank and resource set signaling techniques for multiple TRP communications according to various aspects of this disclosure are explained. For example, control information 400 can be used in a wireless communication system including UE 115 and base station 105 as described herein.

[0128] In this example, uplink DCI 405 may include scheduling information for uplink PUSCH communication from the UE to one or more TRPs. In this example, the UE may be configured (e.g., via RRC signaling) to have two SRS resource sets, including a first SRS resource set 415 and a second SRS resource set 420. Furthermore, the UE may be configured to anticipate control information in the SRI field 410, indicating whether one or both SRS resource sets will be used for the associated uplink communication, and the SRS resources within each indicated SRS resource set. According to the techniques provided herein, uplink DCI 405 and the SRI field 410 can provide relevant SRS indications, as shown in reference... Figure 2 The subject of discussion.

[0129] In this example, the first SRS resource set 415 can be configured with four SRS resources, including a first SRS resource 425-a, a second SRS resource 425-b, a third SRS resource 425-c, and a fourth SRS resource 425-d. Similarly, the second SRS resource set 420 can be configured with four SRS resources, including a first SRS resource 430-a, a second SRS resource 430-b, a third SRS resource 430-c, and a fourth SRS resource 430-d. The SRI field 410 in this example indicates (e.g., as shown in reference...) Figure 2 The discussion concerns the first SRS resources 425-a and 425-c within the first SRS resource set 415, and the second SRS resources 430-b and 430-c within the second SRS resource set 420. Therefore, in this example, uplink communication can be transmitted in a first repetition using uplink transmission parameters suitable for transmission to the first TRP using the first beam, and in a second repetition using uplink transmission parameters suitable for transmission to the second TRP using the second beam.

[0130] Figure 5 Examples of a process flow 500 supporting rank-sum resource set signaling techniques for multiple TRP communications according to various aspects of this disclosure are described. In some examples, process flow 500 may implement aspects of wireless communication systems 100 or 200. For example, process flow 500 includes UE 115-b and base stations 105-c and 105-d, each of which may be a reference Figure 1-4 Examples of the corresponding devices described. Process flow 500 can illustrate examples of how base stations 105-c and 105-d and UE 115-b (e.g., based on rank and SRS resources) determine multiple repeating uplink transmission parameters for uplink communication to different TRPs.

[0131] In the following description of process flow 500, operations between UE 115-b and base stations 105-c and 105-d may be transmitted in a different order than those shown, or operations performed by base stations 105-c and 105-d and UE 115-b may be performed in a different order or at different times. Some operations may also be excluded from process flow 500, or other operations may be added to process flow 500. It should be understood that although base stations 105-c and 105-d and UE 115-b are shown to perform several operations of process flow 500, any wireless device (e.g., UE, CPE, base station, Transmitter-Receiver Point (TRP), IAB node, repeater with different types of capabilities in terms of signal repetition (also referred to as "smart" or "dumb" repeater, or some other term), or sidelink node, etc.) may also perform the operations shown.

[0132] Optionally, at 505, UE 115-b may transmit a capability indication to a first base station 105-c (e.g., which may include a first TRP). Such a capability indication provides information about whether UE 115-b is able to receive control information, as well as configuration information that provides uplink transmission to multiple TRPs using different uplink transmission parameters scheduled using the same scheduling DCI.

[0133] At 510, the first base station 105-c may determine configuration information for UE 115-b. In some cases, the first base station 105-c may be the serving base station 105-c, and may determine multiple repetitions of uplink communication to be transmitted by UE 115-b. In some cases, the configuration information may include the configuration of multiple SRS resource sets, each of which may be associated with a different TRP (e.g., a first SRS resource set may provide SRS resources suitable for communicating with one or more TRPs, and a second SRS resource set may provide SRS resources suitable for communicating with one or more TRPs (which may include some TRPs of the same TRP as the first SRS resource set or exclude TRPs of the same TRP as the first SRS resource set). The configuration information may also include an indication of the format (e.g., number of bits) of control information for scheduling uplink communication (e.g., reference to...). Figure 2 (As discussed). Additionally, in some cases, the configuration information may also configure one of the SRS resource sets to be associated with a specific SRI field in the control information. In some cases, the first base station 105-c may optionally exchange TRP coordination information with the second base station 105-d, as indicated at 515. For example, such coordination information may include information about uplink resources used for intended uplink communication.

[0134] At 520, the first base station 105-c may transmit SRS resource configuration to UE 115-b. In some cases, the SRS resource configuration may be transmitted as part of RRC signaling between UE 115-b and the first base station 105-c. At 525, the first base station 105-c may determine the repetition level, SRS resources, and uplink allocation for uplink communication from UE 115-b.

[0135] At 530, the first base station 105-c (and / or (optionally) the second base station 105-d) may transmit a DCI to the UE 115-b. The DCI may include an indication of whether one or two SRS resource sets will be used for uplink communication, the number of repetitions of uplink communication, an indication of one or more SRS resources within one or more SRS resource sets associated with uplink communication, or any combination thereof.

[0136] In 535, UE 115-b may (e.g., as referenced) Figure 2 The UE 115-b determines the repeated uplink transmission parameters used for uplink communication. In some cases, the UE 115-b can determine which SRS resource in the configured SRS resource set should be associated with uplink communication, such as by using one or more techniques as discussed herein.

[0137] Optionally, at 540, UE 115-b may transmit one or more SRSs to the first base station 105-c and / or the second base station 105-d. As discussed herein, the one or more SRSs may have uplink transmission parameters determined based on the indicated SRS resources. At 545, UE 115-b may transmit a first PUSCH to the first base station 105-c, and at 550, UE 115-b may transmit a second PUSCH to the second base station 105-d. Repetition of PUSCHs may have uplink transmission parameters determined based on the indicated SRS resources, such as through the use of various different techniques provided herein.

[0138] Figure 6 A block diagram 600 of an apparatus 605 supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure. Apparatus 605 may be an example of various aspects of UE 115 as described herein. Apparatus 605 may include a receiver 610, a transmitter 615, and a communications manager 620. Apparatus 605 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0139] Receiver 610 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). The information may be transmitted to other components of device 605. Receiver 610 may utilize a single antenna or a collection of multiple antennas.

[0140] Transmitter 615 may provide means for transmitting signals generated by other components of device 605. For example, transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). In some examples, transmitter 615 may be co-located with receiver 610 in a transceiver module. Transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0141] The communication manager 620, receiver 610, transmitter 615, or various combinations thereof, or various components thereof, may be examples of apparatuses for performing various aspects of the rank and resource set signaling technology for multiple TRP communications as described herein. For example, the communication manager 620, receiver 610, transmitter 615, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0142] In some examples, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). This hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured to serve as or otherwise support means for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in memory by the processor).

[0143] Additionally or alternatively, in some examples, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented by processor-executable code (e.g., as communication management software or firmware). If implemented by processor-executable code, the functionality of the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor, DSP, central processing unit (CPU), ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., means configured or otherwise supported for performing the functions described in this disclosure).

[0144] In some examples, the communication manager 620 may be configured to use or otherwise cooperate with the receiver 610, transmitter 615, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated with the receiver 610, transmitter 615, or both to receive information, transmit information, or perform various other operations described herein.

[0145] According to the examples disclosed herein, communication manager 620 may support wireless communication at device 605 (e.g., UE 115). For example, communication manager 620 may be configured or otherwise support means for receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating with which a first uplink communication will be associated, either an SRS resource set or two SRS resource sets. Communication manager 620 may be configured or otherwise support means for receiving first control information communication from a base station, the first control information communication including a control information field and scheduling the first uplink communication for device 605. Communication manager 620 may be configured or otherwise support means for determining, based on the first control information communication and control information configuration, whether one or two SRS resource sets are associated with the first uplink communication. Communication manager 620 may be configured or otherwise support means for transmitting the first uplink communication to a base station based on this determination.

[0146] By including or configuring the communication manager 620 according to the examples described herein, device 605 (e.g., a processor that controls or otherwise couples to receiver 610, transmitter 615, communication manager 620, or a combination thereof) can support multiple repetitions for transmitting uplink communication to multiple different TRPs, such that the different repetitions can use techniques suitable for transmission parameters of the specific TRP associated with that repetition. Such techniques can allow for enhanced reliability of wireless communication and thus provide more efficient utilization of communication resources, reduced power consumption (through reduced retransmissions), reduced latency (through reduced retransmissions), and more efficient utilization of communication resources.

[0147] Figure 7 A block diagram 700 of a device 705 supporting rank and resource set signaling technology for multiple TRP communications is shown according to aspects of this disclosure. Device 705 may be an example of aspects of device 605 or UE 115 as described herein. Device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. Device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0148] Receiver 710 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). The information may be transmitted to other components of device 705. Receiver 710 may utilize a single antenna or a collection of multiple antennas.

[0149] Transmitter 715 may provide means for transmitting signals generated by other components of device 705. For example, transmitter 715 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). In some examples, transmitter 715 may be co-located with receiver 710 in a transceiver module. Transmitter 715 may utilize a single antenna or a collection of multiple antennas.

[0150] Device 705 or its various components may be examples of means for performing various aspects of the rank and resource set signaling techniques for multiple TRP communications as described herein. For example, communication manager 720 may include SRS configuration manager 725, control information manager 730, SRS resource set manager 735, uplink communication manager 740, or any combination thereof. Communication manager 720 may be examples of various aspects of communication manager 620 as described herein. In some examples, communication manager 720 or its various components may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using receiver 710, transmitter 715, or both, or otherwise cooperating with receiver 710, transmitter 715, or both. For example, communication manager 720 may receive information from receiver 710, send information to transmitter 715, or be integrated in combination with receiver 710, transmitter 715, or both to receive information, transmit information, or perform various other operations described herein.

[0151] According to the examples disclosed herein, communication manager 720 may support wireless communication at device 705 (e.g., UE 115). SRS configuration manager 725 may be configured or otherwise support means for receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two SRS resource sets. Control information manager 730 may be configured or otherwise support means for receiving first control information communication from a base station, the first control information communication including a control information field and scheduling the first uplink communication for device 705. SRS resource set manager 735 may be configured or otherwise support means for determining, based on the first control information communication and control information configuration, whether one or two SRS resource sets are associated with the first uplink communication. Uplink communication manager 740 may be configured or otherwise support means for transmitting the first uplink communication to a base station based on this determination.

[0152] Figure 8A block diagram 800 of a communication manager 820 supporting rank-sum resource set signaling technology for multiple TRP communications according to various aspects of this disclosure is shown. The communication manager 820 may be an example of the communication manager 620, communication manager 720, or aspects thereof described herein. The communication manager 820 or its various components may be examples of means for performing various aspects of the rank-sum resource set signaling technology for multiple TRP communications as described herein. For example, the communication manager 820 may include an SRS configuration manager 825, a control information manager 830, an SRS resource set manager 835, an uplink communication manager 840, a mapping manager 845, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0153] According to the examples disclosed herein, communication manager 820 may support wireless communication at device 805 (e.g., UE 115). SRS configuration manager 825 may be configured or otherwise support means for receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two SRS resource sets. Control information manager 830 may be configured or otherwise support means for receiving first control information communication from a base station, the first control information communication including a control information field and scheduling the first uplink communication for device 805. SRS resource set manager 835 may be configured or otherwise support means for determining, based on the first control information communication and control information configuration, whether one or two SRS resource sets are associated with the first uplink communication. Uplink communication manager 840 may be configured or otherwise support means for transmitting the first uplink communication to a base station based on this determination.

[0154] In some examples, to support determination, the SRS resource set manager 835 may be configured or otherwise supported as means for determining the number of SRS resources for each SRS resource set associated with the first uplink communication based on the first control information communication and control information configuration.

[0155] In some examples, to support determination, the control information manager 830 may be configured or otherwise support means for determining whether one or two SRS resource sets are associated with the first uplink communication based on a first bit of the first control information communication, and wherein the control information field includes a set of bits indicating the number of SRS resources for each SRS resource set associated with the first uplink communication. In some examples, the first bit is the initial bit of the control information field, or it is in a separate field in the first control information communication. In some examples, the set of bits includes the maximum of a first number of bits or a second number of bits, the first number of bits being determined based on a first maximum rank when one SRS resource set is associated with the first uplink communication, and the second number of bits being determined based on a second maximum rank when two SRS resource sets are associated with the first uplink communication. In some examples, the second maximum rank is less than the first maximum rank. In some examples, the second maximum rank is a fixed or configured value provided with the control information configuration. In some examples, the configured value of the second maximum rank is based on the capability of the device 805 transmitted to the base station. In some examples, zero padding is used in the bit set when the number of bits required to indicate the rank of one or two SRS resource sets is less than the total number of bits in the bit set.

[0156] In some examples, the first bit count is determined based on the fact that the first SRS resource set has a different number of SRS resources than the second SRS resource set. In some examples, the first bit count is associated with the first SRS resource set. In some examples, the first bit count is associated with either the first or second SRS resource set, and a separate bit in the control information field provides an indication of which of the first or second SRS resource sets is associated with the first uplink communication. In some examples, the second bit count is associated with both the first and second SRS resource sets, and a first subset of the second bit count indicates one or more SRS resources within the first SRS resource set, and a second subset of the second bit count indicates one or more SRS resources within the second SRS resource set. In some examples, the second bit count is associated with both the first and second SRS resource sets, and provides a joint indication of one or more SRS resources within each SRS resource set based on the same tier associated with each SRS resource set.

[0157] In some examples, to support determination, the mapping manager 845 may be configured or otherwise supported to support means for decoding control information fields to identify bit sets. In some examples, to support determination, the mapping manager 845 may be configured or otherwise supported to support means for identifying the number of SRS resources for each SRS resource set associated with the first uplink communication based on the mapping for bit sets.

[0158] In some examples, the first SRS resource set is ordered before the second SRS resource set, and the number of bits included in the control information field is determined to be the sum of a first number of possible SRS resources associated with the first SRS resource set when a single SRS resource set is associated with the first uplink communication and a second number of possible SRS resources associated with both the first and second SRS resource sets when both the first and second SRS resource sets are associated with the first uplink communication.

[0159] In some examples, a first SRS resource set or a second SRS resource set is ordered as an initial SRS resource set. In some examples, the number of bits included in the control information field is determined to be the sum of a first number of possibilities indicating a first number of SRS resources associated with the initial SRS resource set when a single SRS resource set is associated with the first uplink communication, and a second number of possibilities indicating a second number of SRS resources associated with both the first and second SRS resource sets when both are associated with the first uplink communication. In some examples, different bit values ​​in the control information field are mapped to different possibilities for the number of SRS resources associated with the first uplink communication.

[0160] Figure 9 A diagram of a system 900 including device 905 supporting rank and resource set signaling technology for multiple TRP communications is shown according to various aspects of this disclosure. Device 905 may be an example of device 605, device 705, or UE 115 as described herein, or a component including device 805, device 905, or UE 115. Device 905 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 905 may include components for bidirectional voice and data communications, including components for transmitting and receiving communications, including a communication manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, a memory 930, a code 935, and a processor 940. These components may be in electronic communications or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 945).

[0161] I / O controller 910 manages the input and output signals of device 905. I / O controller 910 can also manage peripheral devices not integrated into device 905. In some cases, I / O controller 910 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 910 may utilize an operating system, such as... Or another known operating system. Additionally or alternatively, the I / O controller 910 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 910 may be implemented as part of a processor (such as processor 940). In some cases, a user may interact with device 905 via the I / O controller 910 or via hardware components controlled by the I / O controller 910.

[0162] In some cases, device 905 may include a single antenna 925. However, in other cases, device 905 may have more than one antenna 925, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 915 may communicate bidirectionally via one or more antennas 925, wired or wireless links, as described herein. For example, transceiver 915 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 915 may also include a modem for modulating packets and providing modulated packets to one or more antennas 925 for transmission, and for demodulating packets received from one or more antennas 925. Transceiver 915, or transceiver 915 and one or more antennas 925, may be an example of transmitter 615, transmitter 715, receiver 610, receiver 710, or any combination thereof or components thereof as described herein.

[0163] Memory 930 may include random access memory (RAM) and read-only memory (ROM). Memory 930 may store computer-readable, computer-executable code 935, including instructions that, when executed by processor 940, cause device 905 to perform the various functions described herein. Code 935 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 935 may not be directly executed by processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 930 may, in particular, include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0164] Processor 940 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 940 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 940. Processor 940 may be configured to execute computer-readable instructions stored in memory (e.g., memory 930) to cause device 905 to perform various functions (e.g., functions or tasks supporting rank and resource set signaling techniques for multiple TRP communications). For example, device 905 or components thereof may include processor 940 and memory 930 coupled to processor 940, wherein processor 940 and memory 930 are configured to perform the various functions described herein.

[0165] According to the examples disclosed herein, the communication manager 920 may support wireless communication at device 905 (e.g., UE 115). For example, the communication manager 920 may be configured or otherwise support means for receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two SRS resource sets. The communication manager 920 may be configured or otherwise support means for receiving first control information communication from a base station, the first control information communication including a control information field and scheduling the first uplink communication for device 905. The communication manager 920 may be configured or otherwise support means for determining, based on the first control information communication and the control information configuration, whether one or two SRS resource sets are associated with the first uplink communication. The communication manager 920 may be configured or otherwise support means for transmitting the first uplink communication to the base station based on this determination.

[0166] By including or configuring the communication manager 920 according to the examples described herein, device 905 can support multiple repetitions for transmitting uplink communication to multiple different TRPs, such that the different repetitions can use techniques suitable for the transmission parameters of the specific TRP associated with that repetition. Such techniques can allow for enhanced reliability of wireless communication and thus provide more efficient utilization of communication resources, reduced power consumption (through reduced retransmissions), reduced latency (through reduced retransmissions), and more efficient utilization of communication resources.

[0167] In some examples, the communication manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the transceiver 915, one or more antennas 925, or any combination thereof. Although the communication manager 920 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 920 may be supported or performed by the processor 940, memory 930, code 935, or any combination thereof. For example, code 935 may include instructions executable by the processor 940 to cause the device 905 to perform various aspects of the rank and resource set signaling techniques for multiple TRP communications as described herein, or the processor 940 and memory 930 may be otherwise configured to perform or support such operations.

[0168] Figure 10 A block diagram 1000 of an apparatus 1005 supporting rank and resource set signaling technology for multiple TRP communications is shown according to aspects of this disclosure. Apparatus 1005 may be an example of aspects of base station 105 as described herein. Apparatus 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. Apparatus 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0169] Receiver 1010 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). The information may be transmitted to other components of device 1005. Receiver 1010 may utilize a single antenna or a collection of multiple antennas.

[0170] Transmitter 1015 may provide means for transmitting signals generated by other components of device 1005. For example, transmitter 1015 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). In some examples, transmitter 1015 may be co-located with receiver 1010 in a transceiver module. Transmitter 1015 may utilize a single antenna or a collection of multiple antennas.

[0171] The communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof, or various components thereof, may be examples of apparatuses for performing various aspects of the rank and resource set signaling technology for multiple TRP communications as described herein. For example, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof, or components thereof, may support methods for performing one or more functions described herein.

[0172] In some examples, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). The hardware may include processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured or otherwise supported for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in memory by the processor).

[0173] Additionally or alternatively, in some examples, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be implemented by code executed by a processor (e.g., as communication management software or firmware). If implemented by code executed by a processor, the functionality of the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., means configured or otherwise supported for performing the functions described in this disclosure).

[0174] In some examples, the communication manager 1020 may be configured to use or otherwise cooperate with the receiver 1010, transmitter 1015, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated with the receiver 1010, transmitter 1015, or both to receive information, transmit information, or perform various other operations described herein.

[0175] According to the examples disclosed herein, the communication manager 1020 may support wireless communication at device 1005 (e.g., base station 105). For example, the communication manager 1020 may be configured or otherwise support means for transmitting control information configuration to the UE, the control information configuration indicating the number of bits to be included in a control information field indicating whether a first uplink communication will be associated with one or two SRS resource sets. The communication manager 1020 may be configured or otherwise support means for determining whether one or two SRS resource sets are associated with the first uplink communication. The communication manager 1020 may be configured or otherwise support means for transmitting first control information communication to the UE, the first control information communication including a control information field and scheduling the first uplink communication for the UE and indicating whether one or two SRS resource sets are associated with the first uplink communication. The communication manager 1020 may be configured or otherwise support means for receiving the first uplink communication from the UE based on the first control information communication.

[0176] By including or configuring the communication manager 1020 according to the examples described herein, device 1005 (e.g., a processor that controls or is otherwise coupled to receiver 1015, transmitter 1020, communication manager 1020, or a combination thereof) can support techniques for configuring a UE to transmit uplink communications to multiple different TRPs, such that different repetitions can use transmission parameters suitable for the specific TRP associated with that repetition. Such techniques can allow for enhanced reliability of wireless communication and thus provide more efficient utilization of communication resources, reduced power consumption (through reduced retransmissions), reduced latency (through reduced retransmissions), and more efficient utilization of communication resources. Furthermore, such techniques provide the flexibility to schedule uplink communications with repetitions based on one or more SRS resource sets, which can enhance network efficiency by efficiently scheduling uplink communications according to available network and radio resources and using reduced DCI overhead.

[0177] Figure 11 A block diagram 1100 of an apparatus 1105 supporting rank and resource set signaling technology for multiple TRP communications is shown according to aspects of this disclosure. Apparatus 1105 may be an example of aspects of apparatus 1005 or base station 105 as described herein. Apparatus 1105 may include a receiver 1110, a transmitter 1115, and a communication manager 1120. Apparatus 1105 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0178] Receiver 1110 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). The information may be transmitted to other components of device 1105. Receiver 1110 may utilize a single antenna or a collection of multiple antennas.

[0179] Transmitter 1115 may provide means for transmitting signals generated by other components of device 1105. For example, transmitter 1115 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to rank and resource set signaling techniques for multiple TRP communications). In some examples, transmitter 1115 may be co-located with receiver 1110 in a transceiver module. Transmitter 1115 may utilize a single antenna or a collection of multiple antennas.

[0180] Device 1105 or its various components may be examples of means for performing various aspects of the rank and resource set signaling techniques for multiple TRP communications as described herein. For example, communication manager 1120 may include SRS configuration manager 1125, SRS resource set manager 1130, control information manager 1135, uplink communication manager 1140, or any combination thereof. Communication manager 1120 may be examples of various aspects of communication manager 1020 as described herein. In some examples, communication manager 1120 or its various components may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using receiver 1110, transmitter 1115, or both, or otherwise in cooperation with receiver 1110, transmitter 1115, or both. For example, communication manager 1120 may receive information from receiver 1110, send information to transmitter 1115, or be integrated with receiver 1110, transmitter 1115, or both to receive information, transmit information, or perform various other operations described herein.

[0181] According to the examples disclosed herein, communication manager 1120 may support wireless communication at device 1105 (e.g., base station 105). SRS configuration manager 1125 may be configured or otherwise support means for transmitting control information configuration to the UE, the control information configuration indicating the amount of bits to be included in a control information field indicating whether a first uplink communication will be associated with one or two SRS resource sets. SRS resource set manager 1130 may be configured or otherwise support means for determining whether one or two SRS resource sets are associated with the first uplink communication. Control information manager 1135 may be configured or otherwise support means for transmitting first control information communication to the UE, the first control information communication including a control information field and scheduling the first uplink communication for the UE and indicating whether one or two SRS resource sets are associated with the first uplink communication. Uplink communication manager 1140 may be configured or otherwise support means for receiving the first uplink communication from the UE based on the first control information communication.

[0182] Figure 12 A block diagram 1200 is shown of a communication manager 1220 supporting rank-sum resource set signaling technology for multiple TRP communications according to various aspects of this disclosure. Communication manager 1220 may be an example of communication manager 1020, communication manager 1120, or aspects thereof described herein. Communication manager 1220 or its various components may be examples of means for performing various aspects of rank-sum resource set signaling technology for multiple TRP communications as described herein. For example, communication manager 1220 may include SRS configuration manager 1225, SRS resource set manager 1230, control information manager 1235, uplink communication manager 1240, mapping manager 1245, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0183] According to the examples disclosed herein, communication manager 1220 may support wireless communication at device 1205 (e.g., base station 105). SRS configuration manager 1225 may be configured or otherwise support means for transmitting control information configuration to the UE, the control information configuration indicating the amount of bits to be included in a control information field indicating whether a first uplink communication will be associated with one or two SRS resource sets. SRS resource set manager 1230 may be configured or otherwise support means for determining whether one or two SRS resource sets are associated with the first uplink communication. Control information manager 1235 may be configured or otherwise support means for transmitting first control information communication to the UE, the first control information communication including a control information field and scheduling the first uplink communication for the UE and indicating whether one or two SRS resource sets are associated with the first uplink communication. Uplink communication manager 1240 may be configured or otherwise support means for receiving the first uplink communication from the UE based on the first control information communication.

[0184] In some examples, the control information field further indicates the number of SRS resources associated with the first uplink communication. In some examples, the first bit of the first control information communication indicates whether one or two SRS resource sets are associated with the first uplink communication, and the control information field includes a set of bits indicating the number of SRS resources for each SRS resource set associated with the first uplink communication. In some examples, the first bit is the initial bit of the control information field, or it is in a separate field within the first control information communication. In some examples, the set of bits includes the maximum of a first number of bits or a second number of bits, the first number of bits being determined based on a first maximum rank when one SRS resource set is associated with the first uplink communication, and the second number of bits being determined based on a second maximum rank set when two SRS resource sets are associated with the first uplink communication. In some examples, the second maximum rank is less than the first maximum rank. In some examples, the second maximum rank is a fixed or configured value provided with the control information configuration. In some examples, the configured value of the second maximum rank is based on the capabilities of the UE transmitted to device 805. In some examples, zero padding is used in the bit set when the number of bits required to indicate the rank of one or two SRS resource sets is less than the total number of bits in the bit set.

[0185] In some examples, the first bit count is determined based on the fact that the first SRS resource set has a different number of SRS resources than the second SRS resource set. In some examples, the first bit count is associated with the first SRS resource set.

[0186] In some examples, the first number of bits is associated with either a first SRS resource set or a second SRS resource set, and a separate bit in the control information field provides an indication of which of the first or second SRS resource sets is associated with the first uplink communication. In some examples, the second number of bits is associated with both the first and second SRS resource sets, and a first subset of the second number of bits indicates one or more SRS resources within the first SRS resource set, and a second subset of the second number of bits indicates one or more SRS resources within the second SRS resource set. In some examples, the second number of bits is associated with both the first and second SRS resource sets, and provides a joint indication of one or more SRS resources within each SRS resource set based on the same tier associated with each SRS resource set.

[0187] In some examples, the mapping manager 1245 may be configured or otherwise supported to provide means for determining the number of SRS resources for each SRS resource set associated with the first uplink communication. In some examples, the mapping manager 1245 may be configured or otherwise supported to provide means for identifying the mapping between code points and the determined number of SRS resources. In some examples, the mapping manager 1245 may be configured or otherwise supported to provide means for indicating code points in a control information field.

[0188] In some examples, different bit values ​​in the control information field are mapped to different possibilities of SRS resources associated with the first uplink communication. In some examples, the first SRS resource set is ordered before the second SRS resource set, and the number of bits included in the control information field is determined to be the sum of a first number of possibilities indicating a first number of SRS resources associated with the first SRS resource set when a single SRS resource set is associated with the first uplink communication, and a second number of possibilities indicating a second number of SRS resources associated with both the first and second SRS resource sets when both are associated with the first uplink communication. In some examples, either the first or second SRS resource set is ordered as the initial SRS resource set. In some examples, the number of bits included in the control information field is determined to be the sum of a first number of possible SRS resources associated with an initial SRS resource set when a single SRS resource set is associated with the first uplink communication and a second number of possible SRS resources associated with both the first and second SRS resource sets when both the first and second SRS resource sets are associated with the first uplink communication.

[0189] Figure 13A diagram of a system 1300 including device 1305 supporting rank and resource set signaling technology for multiple TRP communications is shown according to aspects of this disclosure. Device 1305 may be an example of device 1005, device 1105, or base station 105 as described herein, or a component including such devices. Device 1305 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1305 may include components for bidirectional voice and data communications, including components for transmitting and receiving communications, such as a communication manager 1320, a network communication manager 1310, a transceiver 1315, an antenna 1325, a memory 1330, a code 1335, a processor 1340, and an inter-station communication manager 1345. These components may be in electronic communications or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1350).

[0190] The network communication manager 1310 can manage communication with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communication manager 1310 can manage the delivery of data communication to client devices (such as one or more UEs 115).

[0191] In some cases, device 1305 may include a single antenna 1325. However, in other cases, device 1305 may have more than one antenna 1325, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 1315 may communicate bidirectionally via one or more antennas 1325, wired or wireless links, as described herein. For example, transceiver 1315 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 1315 may also include a modem for modulating packets and providing modulated packets to one or more antennas 1325 for transmission, and for demodulating packets received from one or more antennas 1325. Transceiver 1315, or transceiver 1315 and one or more antennas 1325, may be an example of transmitter 1015, transmitter 1115, receiver 1010, receiver 1110, or any combination thereof or components thereof as described herein.

[0192] Memory 1330 may include RAM and ROM. Memory 1330 may store computer-readable, computer-executable code 1335, including instructions that, when executed by processor 1340, cause device 1305 to perform the various functions described herein. Code 1335 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1335 may not be directly executable by processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 1330 may, in particular, include a BIOS that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0193] Processor 1340 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1340 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1330) to cause device 1305 to perform various functions (e.g., functions or tasks supporting rank and resource set signaling techniques for multiple TRP communications). For example, device 1305 or components thereof may include processor 1340 and memory 1330 coupled to processor 1340, wherein processor 1340 and memory 1330 are configured to perform the various functions described herein.

[0194] Inter-site communication manager 1345 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1345 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, inter-site communication manager 1345 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0195] Based on the examples disclosed herein, communication manager 1320 may support wireless communication at device 1305 (e.g., base station 105). For example, communication manager 1320 may be configured or otherwise support means for transmitting control information configuration to the UE, the control information configuration indicating the number of bits to be included in a control information field indicating whether a first uplink communication will be associated with one or two SRS resource sets. Communication manager 1320 may be configured or otherwise support means for determining whether one or two SRS resource sets are associated with the first uplink communication. Communication manager 1320 may be configured or otherwise support means for transmitting first control information communication to the UE, the first control information communication including a control information field and scheduling the first uplink communication for the UE and indicating whether one or two SRS resource sets are associated with the first uplink communication. Communication manager 1320 may be configured or otherwise support means for receiving the first uplink communication from the UE based on the first control information communication.

[0196] By including or configuring the communication manager 1320 according to the examples described herein, device 1305 can support multiple repetitions for configuring the UE to transmit uplink communications to multiple different TRPs, such that the different repetitions can use transmission parameters suitable for the specific TRP associated with that repetition. Such techniques can allow for enhanced reliability of wireless communication and thus provide more efficient utilization of communication resources, reduced power consumption (through reduced retransmissions), reduced latency (through reduced retransmissions), and more efficient utilization of communication resources. Furthermore, such techniques provide the flexibility to schedule uplink communications with repetitions based on one or more SRS resource sets, which can enhance network efficiency by efficiently scheduling uplink communications according to available network and radio resources and using reduced DCI overhead.

[0197] In some examples, the communication manager 1320 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the transceiver 1315, one or more antennas 1325, or any combination thereof. Although the communication manager 1320 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 1320 may be supported or performed by the processor 1340, memory 1330, code 1335, or any combination thereof. For example, code 1335 may include instructions executable by the processor 1340 to cause the device 1305 to perform various aspects of the rank and resource set signaling techniques for multiple TRP communications as described herein, or the processor 1340 and memory 1330 may be otherwise configured to perform or support such operations.

[0198] Figure 14 A flowchart illustrating a method 1400 for supporting rank and resource set signaling techniques for multiple TRP communications according to various aspects of this disclosure is shown. Operation of method 1400 can be implemented by a UE or its components as described herein. For example, operation of method 1400 can be implemented by, as referred to... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0199] At 1405, the method may include receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating with which a first uplink communication will be associated one or two SRS resource sets. Operation of 1405 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1405 may be provided as referenced... Figure 8 The SRS Configuration Manager 825 described is used to execute this.

[0200] At 1410, the method may include receiving first control information communication from a base station, the first control information communication including control information fields, and scheduling first uplink communication for the UE. Operation of 1410 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1410 may be provided as referenced... Figure 8 The control information manager 830 described is used to execute this.

[0201] At 1415, the method may include determining, based on the first control information communication and control information configuration, whether one or two SRS resource sets are associated with the first uplink communication. The operation of 1415 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1415 may be determined by, as referenced... Figure 8 The SRS Resource Set Manager 835 described is used for execution.

[0202] At 1420, the method may include transmitting first uplink communication to a base station based on the determination. The operation of 1420 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1420 may be determined by reference to... Figure 8 The described uplink communication manager 840 is used to perform this.

[0203] Figure 15 A flowchart illustrating a method 1500 for supporting rank and resource set signaling technology for multiple TRP communications according to various aspects of this disclosure is shown. Operation of method 1500 can be implemented by a UE or its components as described herein. For example, operation of method 1500 can be implemented by, as referred to... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0204] At 1505, the method may include receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating with which a first uplink communication will be associated one or two SRS resource sets. Operation of 1505 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1505 may be provided as referenced... Figure 8 The SRS Configuration Manager 825 described is used to execute this.

[0205] In 1510, the method may include receiving first control information communication from a base station, the first control information communication including control information fields and scheduling first uplink communication for the UE. Operation of 1510 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1510 may be provided as referenced... Figure 8 The control information manager 830 described is used to execute this.

[0206] At 1515, the method may include determining, based on the first control information communication and control information configuration, whether one or two SRS resource sets are associated with the first uplink communication. The operation of 1515 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1515 may be determined as described in reference to... Figure 8 The SRS Resource Set Manager 835 described is used for execution.

[0207] At 1520, the method may include determining the number of SRS resources for each SRS resource set associated with the first uplink communication based on the first control information communication and control information configuration. Operation of 1520 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1520 may be determined by reference to... Figure 8 The SRS Resource Set Manager 835 described is used for execution.

[0208] At 1525, the method may include transmitting first uplink communication to a base station based on the determination. The operation of 1525 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1525 may be determined by reference to... Figure 8 The described uplink communication manager 840 is used to perform this.

[0209] Figure 16 A flowchart illustrating a method 1600 supporting rank and resource set signaling technology for multiple TRP communications according to various aspects of this disclosure is shown. Operation of method 1600 can be implemented by a UE or its components as described herein. For example, operation of method 1600 can be implemented by, as referred to... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0210] In 1605, the method may include receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating with which a first uplink communication will be associated one or two SRS resource sets. Operation of 1605 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1605 may be provided by reference to... Figure 8 The SRS Configuration Manager 825 described is used to execute this.

[0211] In 1610, the method may include receiving first control information communication from a base station, the first control information communication including control information fields and scheduling first uplink communication for the UE. Operation of 1610 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1610 may be provided as referenced... Figure 8 The control information manager 830 described is used to execute this.

[0212] In 1615, the method may include determining, based on a first bit of the first control information communication, whether one SRS resource set or two SRS resource sets are associated with the first uplink communication, and wherein the control information field includes a set of bits indicating the number of SRS resources in each SRS resource set associated with the first uplink communication. Operation of 1615 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1615 may be provided as referenced... Figure 8 The control information manager 830 described is used to execute this.

[0213] At 1620, the method may include transmitting first uplink communication to a base station based on the determination. The operation of 1620 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1620 may be determined by reference to... Figure 8 The described uplink communication manager 840 is used to perform this.

[0214] Figure 17 A flowchart illustrating a method 1700 supporting rank and resource set signaling technology for multiple TRP communications according to various aspects of this disclosure is shown. Operation of method 1700 can be implemented by a UE or its components as described herein. For example, operation of method 1700 can be implemented by, as referred to... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0215] In 1705, the method may include receiving control information configuration from a base station, the control information configuration indicating the amount of bits to be included in a control information field indicating with which a first uplink communication will be associated one or two SRS resource sets. Operation of 1705 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1705 may be provided by reference to... Figure 8 The SRS Configuration Manager 825 described is used to execute this.

[0216] In 1710, the method may include receiving first control information communication from a base station, the first control information communication including control information fields and scheduling first uplink communication for the UE. Operation of 1710 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1710 may be provided as referenced... Figure 8 The control information manager 830 described is used to execute this.

[0217] In 1715, the method may include decoding a control information field to identify a set of bits. The operation of 1715 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1715 may be derived from, as referenced... Figure 8 The mapping manager 845 described is used to execute this.

[0218] In 1720, the method may include identifying the number of SRS resources for each SRS resource set associated with the first uplink communication based on a mapping for the bit set. The operation of 1720 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1720 may be provided as referenced. Figure 8 The mapping manager 845 described is used to execute this.

[0219] At 1725, the method may include transmitting first uplink communication to a base station based on the mapping. The operation of 1725 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1725 may be provided as referenced. Figure 8 The described uplink communication manager 840 is used to perform this.

[0220] Figure 18 A flowchart illustrating a method 1800 for supporting rank and resource set signaling techniques for multiple TRP communications according to various aspects of this disclosure is shown. Operation of method 1800 may be implemented by a base station or its components as described herein. For example, operation of method 1800 may be implemented by, as referred to... Figures 1 to 5 and Figures 10 to 13 The described base station 105 performs this function. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described function. Alternatively or additionally, the base station may use dedicated hardware to perform aspects of the described function.

[0221] At 1805, the method may include transmitting control information configuration to the UE, the control information configuration indicating the amount of bits to be included in a control information field indicating with which a first uplink communication will be associated one or two SRS resource sets. Operation of 1805 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1805 may be provided by reference to... Figure 12 The SRS Configuration Manager 1225 described herein is used for execution.

[0222] In 1810, the method may include determining whether one or two SRS resource sets are associated with the first uplink communication. The operation of 1810 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1810 may be determined by reference to... Figure 12 The SRS Resource Set Manager 1230 described is used to execute this.

[0223] At 1815, the method may include transmitting a first control information communication to the UE, the first control information communication including a control information field, and scheduling a first uplink communication for the UE and indicating whether one or two SRS resource sets are associated with the first uplink communication. The operation of 1815 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1815 may be provided as referenced... Figure 12 The control information manager 1235 described herein is used to execute this.

[0224] At 1820, the method may include receiving first uplink communication from the UE based on first control information communication. Operation of 1820 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1820 may be provided as referenced. Figure 12 The described uplink communication manager 1240 is used to perform this.

[0225] Figure 19 A flowchart illustrating a method 1900 for supporting rank and resource set signaling techniques for multiple TRP communications according to various aspects of this disclosure is shown. Operation of method 1900 can be implemented by a base station or its components as described herein. For example, operation of method 1900 can be implemented by, as referred to... Figures 1 to 5 and Figures 10 to 13 The described base station 105 performs this function. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described function. Alternatively or additionally, the base station may use dedicated hardware to perform aspects of the described function.

[0226] In 1905, the method may include transmitting control information configuration to the UE, the control information configuration indicating the amount of bits to be included in a control information field indicating with which a first uplink communication will be associated one or two SRS resource sets. Operation of 1905 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1905 may be provided by reference to... Figure 12 The SRS Configuration Manager 1225 described herein is used for execution.

[0227] In 1910, the method may include determining whether one or two SRS resource sets are associated with the first uplink communication. The operation of 1910 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1910 may be determined by reference to... Figure 12 The SRS Resource Set Manager 1230 described is used to execute this.

[0228] In 1915, the method may include determining the number of SRS resources for each SRS resource set associated with the first uplink communication. The operation of 1915 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1915 may be determined by reference to... Figure 12 The described mapping manager 1245 is used to execute this.

[0229] In 1920, the method may include a mapping between identification code points and the determined number of SRS resources. The operation of 1920 can be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1920 may be derived from, as referenced... Figure 12 The described mapping manager 1245 is used to execute this.

[0230] In 1925, the method may include first control information communication to transmit an indicator code point to the UE. Operation of 1925 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1925 may be provided as referenced. Figure 12 The control information manager 1235 described herein is used to execute this.

[0231] In 1930, the method may include receiving first uplink communication from the UE based on first control information communication. Operation of 1930 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1930 may be provided as referenced. Figure 12 The described uplink communication manager 1240 is used to perform this.

[0232] The following provides an overview of the various aspects of this disclosure:

[0233] Aspect 1: A method for wireless communication at a UE, comprising: receiving control information configuration from a base station, the control information configuration indicating a number of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two test reference signal resource sets; receiving first control information communication from the base station, the first control information communication including the control information field and scheduling the first uplink communication for the UE; determining, at least in part, whether one or two test reference signal resource sets are associated with the first uplink communication based on the first control information communication and the control information configuration; and transmitting the first uplink communication to the base station at least in part based on the determination.

[0234] Aspect 2: The method of Aspect 1, wherein the control information field further indicates the number of probe reference signal resources associated with the first uplink communication, and wherein the determination further includes: determining the number of probe reference signal resources for each set of probe reference signal resources associated with the first uplink communication based at least in part on the first control information communication and the control information configuration.

[0235] Aspect 3: The method of any one of Aspects 1 to 2, wherein the determination further comprises: determining, at least in part, based on a first bit of the first control information communication, whether one or two probe reference signal resource sets are associated with the first uplink communication, and wherein the control information field includes a set of bits indicating the number of probe reference signal resources in each probe reference signal resource set associated with the first uplink communication.

[0236] Aspect 4: The method of aspect 3, wherein the first bit is the initial bit of the control information field, or in a separate field in the first control information communication.

[0237] Aspect 5: The method of any one of Aspects 3 to 4, wherein the bit set includes the maximum of a first number of bits or a second number of bits, the first number of bits being determined at least in part based on a first maximum rank when a probe reference signal resource set is associated with the first uplink communication, and the second number of bits being determined at least in part based on a second maximum rank when two probe reference signal resource sets are associated with the first uplink communication.

[0238] Aspect 6: The method of aspect 5, wherein the second maximum rank is less than the first maximum rank.

[0239] Aspect 7: The method of any one of Aspects 5 to 6, wherein the second maximum rank is a fixed or configured value provided together with the control information configuration.

[0240] Aspect 8: The method of aspect 7, wherein the configured value of the second maximum rank is based at least in part on the capability of the UE transmitted to the base station.

[0241] Aspect 9: The method of any one of Aspects 5 to 8, wherein zero padding is used in the bit set when the number of bits required to indicate the rank of the one or two probe reference signal resource sets is less than the total number of bits in the bit set.

[0242] Aspect 10: The method of any one of Aspects 5 to 9, wherein the first number of bits is determined at least in part based on the fact that the first probe reference signal resource set has a different number of probe reference signal resources than the second probe reference signal resource set.

[0243] Aspect 11: The method of aspect 10, wherein the first number of bits is associated with the first probe reference signal resource set.

[0244] Aspect 12: The method of aspect 5, wherein the first number of bits is associated with the first probe reference signal resource set or the second probe reference signal resource set, and a separate bit in the control information field provides an indication of which of the first probe reference signal resource set or the second probe reference signal resource set is associated with the first uplink communication.

[0245] Aspect 13: The method of aspect 5, wherein the second number of bits is associated with both the first probe reference signal resource set and the second probe reference signal resource set, and a first subset of the second number of bits indicates one or more probe reference signal resources in the first probe reference signal resource set and a second subset of the second number of bits indicates one or more probe reference signal resources in the second probe reference signal resource set.

[0246] Aspect 14: The method of aspect 5, wherein the second number of bits is associated with both the first and second probe reference signal resource sets, and provides a joint indication of one or more probe reference signal resources within each probe reference signal resource set based on the same number of layers associated with each probe reference signal resource set.

[0247] Aspect 15: The method of aspect 1, wherein the determination further comprises: decoding the control information field to identify a set of bits; and identifying, at least in part, the number of probe reference signal resources for each probe reference signal resource set associated with the first uplink communication based on a mapping for the set of bits.

[0248] Aspect 16: The method of aspect 15, wherein the first probe reference signal resource set is ordered before the second probe reference signal resource set, and the number of bits included in the control information field is determined to be: the sum of a first number of possibilities for a first number of probe reference signal resources associated with the first probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication, and a second number of possibilities for a second number of probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

[0249] Aspect 17: The method of aspect 15, wherein: a first probe reference signal resource set or a second probe reference signal resource set is sorted into an initial probe reference signal resource set, and the number of bits included in the control information field is determined to be: the sum of a first number of possibilities for a first number of probe reference signal resources associated with the initial probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication and a second number of possibilities for a second number of probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

[0250] Aspect 18: The method of any one of Aspects 15 to 17, wherein different bit values ​​of the control information field are mapped to different possibilities of the number of probe reference signal resources associated with the first uplink communication.

[0251] Aspect 19: A method for wireless communication at a base station, comprising: transmitting control information configuration to a UE, the control information configuration indicating the amount of bits to be included in a control information field indicating that a first uplink communication will be associated with one or two test reference signal resource sets; determining whether one or two test reference signal resource sets are associated with the first uplink communication; transmitting first control information communication to the UE, the first control information communication including the control information field, and scheduling the first uplink communication for the UE and indicating whether one or two test reference signal resource sets are associated with the first uplink communication; and receiving the first uplink communication from the UE at least in part based on the first control information communication.

[0252] Aspect 20: The method of aspect 19, wherein the control information field further indicates the number of probe reference signal resources associated with the first uplink communication.

[0253] Aspect 21: The method of any one of Aspects 19 to 20, wherein the first bit of the first control information communication indicates whether one or two probe reference signal resource sets are associated with the first uplink communication, and wherein the control information field includes a set of bits indicating the number of probe reference signal resources in each probe reference signal resource set associated with the first uplink communication.

[0254] Aspect 22: The method of aspect 21, wherein the first bit is an initial bit of the control information field, or in a separate field in the first control information communication.

[0255] Aspect 23: The method of any one of Aspects 21 to 22, wherein the bit set includes the maximum of a first number of bits or a second number of bits, the first number of bits being determined at least in part based on a first maximum rank when a probe reference signal resource set is associated with the first uplink communication, and the second number of bits being determined at least in part based on a second maximum rank set when two probe reference signal resource sets are associated with the first uplink communication.

[0256] Aspect 24: The method of aspect 23, wherein the second maximum rank is less than the first maximum rank.

[0257] Aspect 25: The method of any one of Aspects 23 to 24, wherein the second maximum rank is a fixed or configured value provided together with the control information configuration.

[0258] Aspect 26: The method of aspect 25, wherein the configured value of the second maximum rank is based at least in part on the capability of the UE transmitted to the base station.

[0259] Aspect 27: The method of any one of Aspects 23 to 26, wherein zero padding is used in the bit set when the number of bits required to indicate the rank of the one or two probe reference signal resource sets is less than the total number of bits in the bit set.

[0260] Aspect 28: The method of any one of Aspects 23 to 27, wherein the first number of bits is determined at least in part based on the fact that the first probe reference signal resource set has a different number of probe reference signal resources than the second probe reference signal resource set.

[0261] Aspect 29: The method of aspect 28, wherein the first number of bits is associated with the first probe reference signal resource set.

[0262] Aspect 30: The method of aspect 23, wherein the first number of bits is associated with the first probe reference signal resource set or the second probe reference signal resource set, and a separate bit in the control information field provides an indication of which of the first probe reference signal resource set or the second probe reference signal resource set is associated with the first uplink communication.

[0263] Aspect 31: The method of aspect 23, wherein the second number of bits is associated with both the first probe reference signal resource set and the second probe reference signal resource set, and a first subset of the second number of bits indicates one or more probe reference signal resources in the first probe reference signal resource set and a second subset of the second number of bits indicates one or more probe reference signal resources in the second probe reference signal resource set.

[0264] Aspect 32: The method of aspect 23, wherein the second number of bits is associated with both the first and second probe reference signal resource sets, and provides a joint indication of one or more probe reference signal resources within each probe reference signal resource set based on the same number of layers associated with each probe reference signal resource set.

[0265] Aspect 33: The method of aspect 19 further includes: determining the number of probe reference signal resources in each probe reference signal resource set associated with the first uplink communication; identifying the mapping between code points and the determined number of probe reference signal resources, wherein the control information field indicates the code points.

[0266] Aspect 34: The method of aspect 33, wherein different bit values ​​of the control information field are mapped to different possibilities of a probe reference signal resource associated with the first uplink communication.

[0267] Aspect 35: The method of aspect 19, wherein the first probe reference signal resource set is ordered before the second probe reference signal resource set, and the number of bits included in the control information field is determined to be: the sum of a first number of possibilities for a first number of probe reference signal resources associated with the first probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication, and a second number of possibilities for a second number of probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

[0268] Aspect 36: The method of aspect 19, wherein: a first probe reference signal resource set or a second probe reference signal resource set is sorted into an initial probe reference signal resource set, and the number of bits included in the control information field is determined to be: the sum of a first number of possibilities for a first number of probe reference signal resources associated with the initial probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication and a second number of possibilities for a second number of probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

[0269] Aspect 37: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory, which can be executed by the processor to cause the apparatus to perform a method as described in any one of Aspects 1 to 18.

[0270] Aspect 38: An apparatus for wireless communication at a UE, comprising at least one means for performing a method as described in any one of aspects 1 to 18.

[0271] Aspect 39: A non-transient computer-readable medium storing code for wireless communication at a UE, the code including instructions executable by a processor to perform methods as described in any of Aspects 1 to 18.

[0272] Aspect 40: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of aspects 19 to 36.

[0273] Aspect 41: An apparatus for wireless communication at a base station, comprising at least one means for performing the method of any one of aspects 19 to 36.

[0274] Aspect 42: A non-transient computer-readable medium storing code for wireless communication at a base station, the code including instructions executable by a processor to perform methods as described in any of Aspects 19 to 36.

[0275] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0276] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein can also be applied to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques can be applied to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0277] The information and signals described herein can be represented using any of a wide variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0278] The various illustrative boxes and components described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration).

[0279] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed such that different parts of the function are implemented at different physical locations.

[0280] Computer-readable media includes both non-transitory computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible to a general-purpose or special-purpose computer. By way of example and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code in the form of instructions or data structures and is accessible to a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Any connection is also properly referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then such coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable media. As used in this article, disk and disc include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks often magnetically reproduce data while discs optically reproduce data using lasers. Combinations of these media are also included within the scope of computer-readable media.

[0281] As used herein (including in the claims), the word "or" in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Similarly, as used herein, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0282] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type may be distinguished by a dash following the reference numeral and a second reference numeral used to differentiate between similar components. If only the first reference numeral is used in the description, the description may apply to any of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0283] The descriptions herein, illustrated with reference to the accompanying drawings, depict exemplary configurations and are not representative of all examples that may be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not imply "superior" or "outperforming" other examples. This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0284] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the universal principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for conducting wireless communication at a user equipment (UE), comprising: Receive control information configuration, wherein the control information configuration indication will be included in the number of bits in the control information field indicating that a first uplink communication will be associated with one or two probe reference signal resource sets; Receive first control information communication, the first control information communication including the control information field, and schedule the first uplink communication for the UE; The determination of whether a breakthrough reference signal resource set or two breakthrough reference signal resource sets are associated with the first uplink communication is based at least in part on the first control information communication and the control information configuration. The first uplink communication is transmitted based at least in part on the determination; The determination further includes: determining, at least in part, based on a first bit of the first control information communication, whether one or two probe reference signal resource sets are associated with the first uplink communication, and wherein the control information field includes a set of bits indicating the number of probe reference signal resources in each probe reference signal resource set associated with the first uplink communication; and The bit set includes the maximum of a first bit number or a second bit number, the first bit number being determined at least in part based on a first maximum rank when a probe reference signal resource set is associated with the first uplink communication, and the second bit number being determined at least in part based on a second maximum rank when two probe reference signal resource sets are associated with the first uplink communication.

2. The method of claim 1, wherein the control information field further indicates the number of probe reference signal resources associated with the first uplink communication, and wherein the determination further includes: The number of probe reference signal resources for each probe reference signal resource set associated with the first uplink communication is determined at least in part based on the first control information communication and the control information configuration.

3. The method of claim 1, wherein the first bit is an initial bit of the control information field, or is in a separate field in the first control information communication.

4. The method of claim 1, wherein the second maximum rank is less than the first maximum rank.

5. The method of claim 1, wherein the second maximum rank is a fixed value or a configured value provided together with the control information configuration.

6. The method of claim 5, wherein the configured value of the second maximum rank is at least partially based on the capability of the UE.

7. The method of claim 1, wherein zero padding is used in the bit set when the number of bits required to indicate the rank of the one or two probe reference signal resource sets is less than the total number of bits in the bit set.

8. The method of claim 1, wherein the first number of bits is determined at least in part based on the fact that the first probe reference signal resource set has a different number of probe reference signal resources than the second probe reference signal resource set.

9. The method of claim 8, wherein the first number of bits is associated with the first probe reference signal resource set.

10. The method of claim 8, wherein the first number of bits is associated with the first or second probe reference signal resource set, and a separate bit in the control information field provides an indication of which of the first or second probe reference signal resource sets is associated with the first uplink communication.

11. The method of claim 1, wherein the second number of bits is associated with both the first probe reference signal resource set and the second probe reference signal resource set, and a first subset of the second number of bits indicates one or more probe reference signal resources in the first probe reference signal resource set and a second subset of the second number of bits indicates one or more probe reference signal resources in the second probe reference signal resource set.

12. The method of claim 1, wherein the second number of bits is associated with both the first and second probe reference signal resource sets, and provides a joint indication of one or more probe reference signal resources within each probe reference signal resource set based on the same number of layers associated with each probe reference signal resource set.

13. The method of claim 1, wherein the determination further comprises: Decode the control information field to identify the bit set; as well as The number of probe reference signal resources for each probe reference signal resource set associated with the first uplink communication is identified, at least in part, based on a mapping for the bit set.

14. The method of claim 13, wherein the first probe reference signal resource set is ordered before the second probe reference signal resource set, and the amount of bits included in the control information field is determined to be: the sum of a first probability number indicating the number of first probe reference signal resources associated with the first probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication, and a second probability number indicating the number of second probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

15. The method of claim 13, wherein: The first or second breakthrough reference signal resource set is sorted into the initial breakthrough reference signal resource set; and The number of bits included in the control information field is determined to be: the sum of a first probability number indicating the number of first probe reference signal resources associated with the initial probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication, and a second probability number indicating the number of second probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

16. The method of claim 13, wherein different bit values ​​of the control information field are mapped to different possibilities of the number of probe reference signal resources associated with the first uplink communication.

17. A method for wireless communication at a network node, comprising: Transmit control information configuration, wherein the control information configuration indication will be included in the number of bits in the control information field indicating that a first uplink communication will be associated with one or two probe reference signal resource sets; Determine whether one or two test link reference signal resource sets are associated with the first uplink communication; Transmit a first control information communication, the first control information communication including the control information field, and schedule the first uplink communication and indicate whether a probe reference signal resource set or two probe reference signal resource sets are associated with the first uplink communication; The first uplink communication is received at least in part based on the first control information communication; The first bit of the first control information communication indicates whether one or two probe reference signal resource sets are associated with the first uplink communication, and the control information field includes a set of bits indicating the number of probe reference signal resources in each probe reference signal resource set associated with the first uplink communication; and The bit set includes the maximum of a first bit number or a second bit number, the first bit number being determined at least in part based on a first maximum rank when a probe reference signal resource set is associated with the first uplink communication, and the second bit number being determined at least in part based on a second maximum rank when two probe reference signal resource sets are associated with the first uplink communication.

18. The method of claim 17, wherein the control information field further indicates the number of probe reference signal resources associated with the first uplink communication.

19. The method of claim 17, wherein the first bit is an initial bit of the control information field, or in a separate field in the first control information communication.

20. The method of claim 17, wherein the second maximum rank is less than the first maximum rank.

21. The method of claim 17, wherein the second maximum rank is a fixed value or a configured value provided together with the control information configuration.

22. The method of claim 21, wherein the configured value of the second maximum rank is at least partially based on the capabilities of the UE.

23. The method of claim 17, wherein zero padding is used in the bit set when the number of bits required to indicate the rank of the one or two probe reference signal resource sets is less than the total number of bits in the bit set.

24. The method of claim 17, further comprising: Determine the number of probe reference signal resources for each probe reference signal resource set associated with the first uplink communication; The mapping between the identification code points and the determined number of probe reference signal resources, and The control information field therein indicates the code point.

25. An apparatus for conducting wireless communication at a user equipment (UE), comprising: processor; Memory coupled to the processor; as well as Instructions stored in the memory and executable by the processor to cause the device to perform the following operations: Receive control information configuration, wherein the control information configuration indication will be included in the number of bits in the control information field indicating that a first uplink communication will be associated with one or two probe reference signal resource sets; Receive first control information communication, the first control information communication including the control information field, and schedule the first uplink communication for the UE; The determination of whether a breakthrough reference signal resource set or two breakthrough reference signal resource sets are associated with the first uplink communication is based at least in part on the first control information communication and the control information configuration. The first uplink communication is transmitted based at least in part on the determination; The determination further includes: determining, at least in part, based on a first bit of the first control information communication, whether one or two probe reference signal resource sets are associated with the first uplink communication, and wherein the control information field includes a set of bits indicating the number of probe reference signal resources in each probe reference signal resource set associated with the first uplink communication; and The bit set includes the maximum of a first bit number or a second bit number, the first bit number being determined at least in part based on a first maximum rank when a probe reference signal resource set is associated with the first uplink communication, and the second bit number being determined at least in part based on a second maximum rank when two probe reference signal resource sets are associated with the first uplink communication.

26. The apparatus of claim 25, wherein the control information field further indicates the number of probe reference signal resources associated with the first uplink communication, and wherein the determination further includes: The number of probe reference signal resources for each probe reference signal resource set associated with the first uplink communication is determined at least in part based on the first control information communication and the control information configuration.

27. The apparatus of claim 25, wherein the first bit is an initial bit of the control information field, or is in a separate field in the first control information communication.

28. The apparatus of claim 25, wherein the second maximum rank is less than the first maximum rank.

29. The apparatus of claim 25, wherein the second maximum rank is a fixed or configured value provided together with the control information configuration.

30. The apparatus of claim 29, wherein the configured value of the second maximum rank is at least partially based on the capability of the UE.

31. The apparatus of claim 25, wherein zero padding is used in the bit set when the number of bits required to indicate the rank of the one or two probe reference signal resource sets is less than the total number of bits in the bit set.

32. The apparatus of claim 25, wherein the first number of bits is determined at least in part based on the fact that the first probe reference signal resource set has a different number of probe reference signal resources than the second probe reference signal resource set.

33. The apparatus of claim 32, wherein the first number of bits is associated with the first probe reference signal resource set.

34. The apparatus of claim 32, wherein the first number of bits is associated with the first or second probe reference signal resource set, and a separate bit in the control information field provides an indication of which of the first or second probe reference signal resource sets is associated with the first uplink communication.

35. The apparatus of claim 25, wherein the second number of bits is associated with both the first probe reference signal resource set and the second probe reference signal resource set, and a first subset of the second number of bits indicates one or more probe reference signal resources in the first probe reference signal resource set and a second subset of the second number of bits indicates one or more probe reference signal resources in the second probe reference signal resource set.

36. The apparatus of claim 25, wherein the second number of bits is associated with both the first and second probe reference signal resource sets, and provides a joint indication of one or more probe reference signal resources within each probe reference signal resource set based on the same number of layers associated with each probe reference signal resource set.

37. The apparatus of claim 25, wherein the determination further comprises: Decode the control information field to identify the bit set; as well as The number of probe reference signal resources for each probe reference signal resource set associated with the first uplink communication is identified, at least in part, based on a mapping for the bit set.

38. The apparatus of claim 37, wherein the first probe reference signal resource set is ordered before the second probe reference signal resource set, and the amount of bits included in the control information field is determined to be: the sum of a first probability number indicating the number of first probe reference signal resources associated with the first probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication, and a second probability number indicating the number of second probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

39. The apparatus of claim 37, wherein: The first or second breakthrough reference signal resource set is sorted into the initial breakthrough reference signal resource set; and The number of bits included in the control information field is determined to be: the sum of a first probability number indicating the number of first probe reference signal resources associated with the initial probe reference signal resource set when a single probe reference signal resource set is associated with the first uplink communication, and a second probability number indicating the number of second probe reference signal resources associated with both the first probe reference signal resource set and the second probe reference signal resource set when both the first probe reference signal resource set and the second probe reference signal resource set are associated with the first uplink communication.

40. The apparatus of claim 37, wherein different bit values ​​of the control information field are mapped to different possibilities of the number of probe reference signal resources associated with the first uplink communication.

41. An apparatus for wireless communication at a network node, comprising: processor; Memory coupled to the processor; as well as Instructions stored in the memory and executable by the processor to cause the device to perform the following operations: Transmit control information configuration, wherein the control information configuration indication will be included in the number of bits in the control information field indicating that a first uplink communication will be associated with one or two probe reference signal resource sets; Determine whether one or two test link reference signal resource sets are associated with the first uplink communication; Transmit a first control information communication, the first control information communication including the control information field, and schedule the first uplink communication and indicate whether a probe reference signal resource set or two probe reference signal resource sets are associated with the first uplink communication; The first uplink communication is received at least in part based on the first control information communication; The first bit of the first control information communication indicates whether one or two probe reference signal resource sets are associated with the first uplink communication, and the control information field includes a set of bits indicating the number of probe reference signal resources in each probe reference signal resource set associated with the first uplink communication; and The bit set includes the maximum of a first bit number or a second bit number, the first bit number being determined at least in part based on a first maximum rank when a probe reference signal resource set is associated with the first uplink communication, and the second bit number being determined at least in part based on a second maximum rank when two probe reference signal resource sets are associated with the first uplink communication.

42. The apparatus of claim 41, wherein the control information field further indicates the number of probe reference signal resources associated with the first uplink communication.

43. The apparatus of claim 41, wherein the first bit is an initial bit of the control information field, or is in a separate field in the first control information communication.

44. The apparatus of claim 41, wherein the second maximum rank is less than the first maximum rank.

45. The apparatus of claim 41, wherein the second maximum rank is a fixed or configured value provided together with the control information configuration.

46. ​​The apparatus of claim 45, wherein the configured value of the second maximum rank is at least partially based on the capabilities of the UE.

47. The apparatus of claim 41, wherein zero padding is used in the bit set when the number of bits required to indicate the rank of the one or two probe reference signal resource sets is less than the total number of bits in the bit set.

48. The apparatus of claim 41, wherein the instructions are further executable by the processor to cause the apparatus to perform the following operations: Determine the number of probe reference signal resources for each probe reference signal resource set associated with the first uplink communication; The mapping between the identification code points and the determined number of probe reference signal resources, and The control information field therein indicates the code point.

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