Multiple sounding reference signal transmissions triggered by downlink control information

Abstract

Methods, systems, and apparatus for wireless communication are described. A user equipment (UE) can use the techniques described herein to identify time slots in which multiple sets of sounding reference signals (SRS) resources triggered by one or more downlink control information (DCI) messages are transmitted. In one aspect, the UE can determine the next available time slot for transmitting the SRS resource set based on availability information at a timestamp and a reference time slot (e.g., the time slot in which the latest DCI message is received or the time slot offset from the time slot in which the latest DCI message is received). In another aspect, the UE can receive an indication of one or more time slots in which multiple SRS resource sets are transmitted. In yet another aspect, the UE can follow one or more rules to identify time slots in which multiple SRS resource sets are transmitted.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. Patent Application No. 17 / 575,341, filed January 13, 2022, entitled “MULTIPLE SOUNDING REFERENCE SIGNAL TRANSMISSIONS TRIGGERED BY DOWNLINK CONTROL INFORMATION”, filed by Abdelghaffar et al., which claims the benefit of U.S. Provisional Patent Application No. 63 / 138,512, filed January 17, 2021, entitled “MULTIPLE SOUNDING REFERENCE SIGNAL TRANSMISSIONS TRIGGERED BY DOWNLINK CONTROL INFORMATION”, each of which is assigned to the assignee of this application, and the entire contents of each of which is expressly incorporated herein by reference. Technical Field

[0003] The following discussion pertains to wireless communication, including the transmission of multiple probe reference signals triggered by downlink control information. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. 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 (e.g., Long Term Evolution (LTE) systems, improved LTE (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 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).

[0005] Wireless multiple access communication systems may include multiple base stations or network access nodes, each supporting communication with multiple communication devices (which may also be referred to as user equipment (UE)). In some wireless communication systems, the UE can be configured to send a set of sounding reference signals (SRS) resources to the base station, allowing the base station to determine channel quality and efficiently schedule communication with the UE. Efficient techniques for triggering the UE to send multiple SRS resource sets are desirable. Summary of the Invention

[0006] The described technology relates to improved methods, systems, devices, and apparatuses for supporting the transmission of multiple Sounding Reference Signals (SRS) triggered by Downlink Control Information (DCI). A User Equipment (UE) can use the techniques described herein to identify time slots in which multiple SRS resource sets triggered by one or more DCI messages are transmitted. In one aspect, the UE can determine the next available time slot for transmitting the SRS resource sets based on availability information at a timestamp and a reference time slot (e.g., the time slot in which the latest DCI message is received or a time slot offset from the time slot in which the latest DCI message is received). In another aspect, the UE can receive an indication of one or more time slots in which multiple SRS resource sets are to be transmitted. In yet another aspect, the UE can follow one or more rules to identify the time slots in which multiple SRS resource sets are to be transmitted.

[0007] A method for wireless communication at a UE is described. The method may include: receiving first downlink control information from a first transmitting and receiving point, the first downlink control information triggering the transmission of a first probe reference signal resource set; receiving second downlink control information from a second transmitting and receiving point, the second downlink control information triggering the transmission of a second probe reference signal resource set; identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identifying a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by a first offset indicated in the first downlink control information (e.g., a first available time slot offset), and the second available time slot is offset from the reference time slot by a second offset indicated in the second downlink control information (e.g., a second available offset); and transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0008] 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. The instructions may be executable by the processor to cause the apparatus to perform the following operations: receiving first downlink control information from a first transmitting and receiving point, the first downlink control information triggering the transmission of a first probe reference signal resource set; receiving second downlink control information from a second transmitting and receiving point, the second downlink control information triggering the transmission of a second probe reference signal resource set; identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identifying a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by a first available time slot offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by a second available time slot offset indicated in the second downlink control information; and transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include: a unit for receiving first downlink control information from a first transmitting and receiving point, the first downlink control information triggering the transmission of a first probe reference signal resource set; a unit for receiving second downlink control information from a second transmitting and receiving point, the second downlink control information triggering the transmission of a second probe reference signal resource set; a unit for identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; a unit for identifying a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by a first available time slot offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by a second available time slot offset indicated in the second downlink control information; and a unit for transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0010] A non-transitory computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: receive first downlink control information from a first transmitting and receiving point, the first downlink control information triggering the transmission of a first probe reference signal resource set; receive second downlink control information from a second transmitting and receiving point, the second downlink control information triggering the transmission of a second probe reference signal resource set; identify reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identify a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by a first available time slot offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by a second available time slot offset indicated in the second downlink control information; and transmit the first probe reference signal resource set in the first available time slot and transmit the second probe reference signal resource set in the second available time slot.

[0011] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot for the first probe reference signal resource set may include operations, features, units, or instructions for performing the following: identifying the first available time slot for the first probe reference signal resource set from one or more candidate time slots following a processing time after a timestamp determined based on the receipt of the first downlink control information and the second downlink control information. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: identifying the timestamp as the last symbol of a control channel including the second downlink control information or the last symbol of a search space associated with the control channel including the second downlink control information.

[0012] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot for the first probe reference signal resource set may include operations, features, units, or instructions for performing the following: identifying the first available time slot for the first probe reference signal resource set from one or more candidate time slots following a timestamp determined based on receiving the first downlink control information and the second downlink control information. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: identifying the timestamp as a symbol that has reached a processing time preceding one or more symbols in the candidate time slots available for the first probe reference signal resource set.

[0013] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the second downlink control information may be received and correctly decoded using the timestamp. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, at least one of the first downlink control information or the second downlink control information may be received and correctly decoded using the timestamp.

[0014] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining the reference time slot as a time slot in which the second downlink control information can be received. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving an indication of an offset in the second downlink control information; and determining the reference time slot based on the offset and a time slot in which the second downlink control information can be received.

[0015] A method for wireless communication at a UE is described. The method may include: receiving a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set; receiving downlink control information triggering transmission of the first probe reference signal resource set and the second probe reference signal resource set, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set; and transmitting the first probe reference signal resource set in the first available time slot, transmitting the second probe reference signal resource set in the second available time slot, or both.

[0016] 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. The instructions may be executable by the processor to cause the apparatus to: receive a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set; receive downlink control information triggering transmission of the first probe reference signal resource set and the second probe reference signal resource set, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set; and transmit the first probe reference signal resource set in the first available time slot, transmit the second probe reference signal resource set in the second available time slot, or both.

[0017] Another apparatus for wireless communication at a UE is described. The apparatus may include: a unit for receiving a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set; a unit for receiving downlink control information triggering transmission of the first probe reference signal resource set and the second probe reference signal resource set, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set; and a unit for transmitting the first probe reference signal resource set in the first available time slot, transmitting the second probe reference signal resource set in the second available time slot, or both.

[0018] A non-transitory computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: receive a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set; receive downlink control information triggering transmission of the first and second probe reference signal resource sets, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set; and transmit the first probe reference signal resource set in the first available time slot, transmit the second probe reference signal resource set in the second available time slot, or both.

[0019] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a bit field in the downlink control information indicating a first available time slot offset and a second available time slot offset. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving in the configuration message a first list of trigger codes for triggering transmission of the first probe reference signal resource set, wherein each trigger code in the first list corresponds to an offset for the first probe reference signal resource set; and receiving in the downlink control information a trigger code from the first list of trigger codes, the trigger code triggering transmission of the first probe reference signal resource set and indicating the first available time slot offset.

[0020] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a first bit field indicating a first available time slot offset and a second bit field indicating a second available time slot offset in the downlink control information. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining, based on the order of the first bit field and the second bit field in the downlink control information, that the first bit field indicates the first available time slot offset and the second bit field indicates the second available time slot offset.

[0021] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing: identifying a first available time slot for the first probe reference signal resource set prior to a second available time slot for the second probe reference signal resource set; and identifying a second available time slot for the second probe reference signal resource set based on the fact that the first available time slot is not available for the second probe reference signal resource set.

[0022] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot before the second available time slot may include operations, features, units, or instructions for identifying the first available time slot before the second available time slot based on the first available time slot offset being greater than the second available time slot offset.

[0023] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot prior to the second available time slot may include operations, features, units, or instructions for identifying the first available time slot prior to the second available time slot based on a first index of the first probe reference signal resource set and a second index of the second probe reference signal resource set. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot prior to the second available time slot may include operations, features, units, or instructions for identifying the first available time slot prior to the second available time slot based on a first use of the first probe reference signal resource set and a second use of the second probe reference signal resource set.

[0024] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot prior to the second available time slot may include operations, features, units, or instructions for performing the following: identifying the first available time slot prior to the second available time slot based on the first probe reference signal resource set being scheduled for transmission on a portion of the frequency resources. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot prior to the second available time slot may include operations, features, units, or instructions for performing the following: identifying the first available time slot prior to the second available time slot based on a first configuration of the first probe reference signal resource set and a second configuration of the second probe reference signal resource set, wherein the first configuration and the second configuration each include a number of probe reference signal resources, transmit power, frequency hopping configuration, number of repetitions, or any combination thereof.

[0025] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the first available time slot prior to the second available time slot may include operations, features, units, or instructions for identifying the first available time slot prior to the second available time slot based on: the first available time slot offset being different from the second available time slot offset; a first index of the first probe reference signal resource set; a second index of the second probe reference signal resource set; the first probe reference signal resource set being scheduled for transmission on a portion of frequency resources; a first configuration of the first probe reference signal resource set; a second configuration of the second probe reference signal resource set; or any combination thereof, wherein the first configuration and the second configuration each include a number of probe reference signal resources, transmit power, frequency hopping configuration, number of repetitions, or any combination thereof.

[0026] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first available time slot indicated for the first probe reference signal resource set and the second available time slot indicated for the second probe reference signal resource set may be the same time slot. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, transmitting the first probe reference signal resource set, the second probe reference signal resource set, or both may include operations, features, units, or instructions for performing the following: transmitting the first probe reference signal resource set on a first subset of symbols in the same time slot, and transmitting the second probe reference signal resource set on a second subset of symbols in the same time slot.

[0027] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, transmitting the first probe reference signal resource set, the second probe reference signal resource set, or both may include operations, features, units, or instructions for transmitting either the first probe reference signal resource set or the second probe reference signal resource set. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for determining whether to transmit the first probe reference signal resource set or the second probe reference signal resource set based on a first purpose, index, or configuration of the first probe reference signal resource set and a second purpose, index, or configuration of the second probe reference signal resource set.

[0028] A method for wireless communication at a base station is described. The method may include: sending a configuration message indicating a first offset list for a first sounding reference signal resource set and a second offset list for a second sounding reference signal resource set; sending downlink control information that triggers transmission of the first and second sounding reference signal resource sets, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first sounding reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second sounding reference signal resource set; and receiving the first sounding reference signal resource set in the first available time slot, receiving the second sounding reference signal resource set in the second available time slot, or both.

[0029] 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. The instructions may be executable by the processor to cause the apparatus to: send a configuration message indicating a first offset list for a first sounding reference signal resource set and a second offset list for a second sounding reference signal resource set; send downlink control information triggering transmission of the first and second sounding reference signal resource sets, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first sounding reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second sounding reference signal resource set; and receive the first sounding reference signal resource set in the first available time slot, receive the second sounding reference signal resource set in the second available time slot, or both.

[0030] Another apparatus for wireless communication at a base station is described. The apparatus may include: a unit for transmitting a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set; a unit for transmitting downlink control information that triggers transmission of the first probe reference signal resource set and the second probe reference signal resource set, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set; and a unit for receiving the first probe reference signal resource set in the first available time slot, receiving the second probe reference signal resource set in the second available time slot, or both.

[0031] A non-transitory computer-readable medium is described, storing code for wireless communication at a base station. The code may include instructions executable by a processor to: send a configuration message indicating a first offset list for a first sounding reference signal resource set and a second offset list for a second sounding reference signal resource set; send downlink control information triggering transmission of the first and second sounding reference signal resource sets, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first sounding reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second sounding reference signal resource set; and receive the first sounding reference signal resource set in the first available time slot, receive the second sounding reference signal resource set in the second available time slot, or both.

[0032] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: transmitting a bit field in the downlink control information indicating the first available time slot offset and the second available time slot offset. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: transmitting in the configuration message a first list of trigger codes for triggering transmission of the first probe reference signal resource set, wherein each trigger code in the first list corresponds to an offset for the first probe reference signal resource set; and transmitting in the downlink control information trigger codes from the first list of trigger codes, the trigger codes triggering transmission of the first probe reference signal resource set and indicating the first available time slot offset.

[0033] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for transmitting a first bit field indicating a first available time slot offset and a second bit field indicating a second available time slot offset in the downlink control information. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, transmitting the first bit field indicating the first available time slot offset and the second bit field indicating the second available time slot offset may include operations, features, units, or instructions for transmitting the first bit field and the second bit field in an order that causes the first bit field to correspond to the first probe reference signal resource set and the second bit field to correspond to the second probe reference signal resource set.

[0034] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first available time slot indicated for the first probe reference signal resource set and the second available time slot indicated for the second probe reference signal resource set may be the same time slot. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, receiving the first probe reference signal resource set, the second probe reference signal resource set, or both may include operations, features, units, or instructions for performing the following: receiving the first probe reference signal resource set on a first subset of symbols in the same time slot, and receiving the second probe reference signal resource set on a second subset of symbols in the same time slot. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, receiving the first probe reference signal resource set, the second probe reference signal resource set, or both may include operations, features, units, or instructions for performing the following: receiving the first probe reference signal resource set or the second probe reference signal resource set.

[0035] A method for wireless communication at a user equipment (UE) is described. The method may include: receiving first downlink control information from a first transmitting and receiving point at a first time, the first downlink control information triggering the transmission of a first probe reference signal resource set; receiving second downlink control information from a second transmitting and receiving point at a second time, the second downlink control information triggering the transmission of a second probe reference signal resource set, wherein the first time occurs before the second time; identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identifying a timestamp as the last symbol of a control channel including the second downlink control information or the last symbol of a search space associated with the control channel including the second downlink control information; identifying each of a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set based at least in part on a processing time following the timestamp, wherein the first available time slot is offset from the reference time slot by a first available time slot offset, and the second available time slot is offset from the reference time slot by a second available time slot offset; and transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0036] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the device to perform the following operations: receiving first downlink control information from a first transmitting and receiving point at a first time, the first downlink control information triggering the transmission of a first probe reference signal resource set; receiving second downlink control information from a second transmitting and receiving point at a second time, the second downlink control information triggering the transmission of a second probe reference signal resource set, wherein the first time occurs before the second time; identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identifying a timestamp as the last symbol of a control channel including the second downlink control information or the last symbol of a search space associated with the control channel including the second downlink control information; identifying each of a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set based at least in part on processing time after the timestamp, wherein the first available time slot is offset from the reference time slot by a first available time slot offset, and the second available time slot is offset from the reference time slot by a second available time slot offset; and transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0037] Another apparatus for wireless communication at a UE is described. The apparatus may include: a unit for receiving first downlink control information from a first transmitting and receiving point at a first time, the first downlink control information triggering the transmission of a first probe reference signal resource set; a unit for receiving second downlink control information from a second transmitting and receiving point at a second time, the second downlink control information triggering the transmission of a second probe reference signal resource set, wherein the first time occurs before the second time; a unit for identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; and a unit for identifying a timestamp as the last symbol of a control channel including the second downlink control information or a packet... The unit includes the last symbol of the search space associated with the control channel of the second downlink control information; a unit for identifying each of the first available time slot for the first probe reference signal resource set and the second available time slot for the second probe reference signal resource set based at least in part on the processing time after the timestamp, wherein the first available time slot is offset from the reference time slot and the second available time slot is offset from the reference time slot; and a unit for transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0038] A non-transitory computer-readable medium is described. The code may include instructions executable by a processor to perform the following operations: receiving first downlink control information from a first transmitting and receiving point at a first time, the first downlink control information triggering the transmission of a first probe reference signal resource set; receiving second downlink control information from a second transmitting and receiving point at a second time, the second downlink control information triggering the transmission of a second probe reference signal resource set, wherein the first time occurs before the second time; identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identifying a timestamp as the last symbol of a control channel including the second downlink control information or the last symbol of a search space associated with the control channel including the second downlink control information; identifying each of a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set based at least in part on processing time after the timestamp, wherein the first available time slot is offset from the reference time slot by a first available time slot offset, and the second available time slot is offset from the reference time slot by a second available time slot offset; and transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0039] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, identifying the first available time slot for the first probe reference signal resource set may include operations, features, units or instructions for performing the following: identifying the first available time slot for the first probe reference signal resource set from one or more candidate time slots, wherein the timestamp may be determined based on receiving the first downlink control information and the second downlink control information.

[0040] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for determining the reference time slot as a time slot in which the second downlink control information can be received.

[0041] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing: receiving an indication of an offset in the second downlink control information; and determining the reference time slot based on the offset and the time slot in which the second downlink control information may be received. Attached Figure Description

[0042] Figure 1An example of a wireless communication system that supports the transmission of multiple probe reference signals (SRS) triggered by downlink control information (DCI) is shown, according to various aspects of this disclosure.

[0043] Figure 2 Several options are shown for determining the available time slots for sending SRS resource sets.

[0044] Figure 3 An example of a wireless communication system supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0045] Figure 4 Several options for determining available time slots for repeating the Physical Downlink Control Channel (PDCCH) are shown according to various aspects of this disclosure.

[0046] Figure 5 Several options for determining the available time slots for utilizing PDCCH repetition are shown according to various aspects of this disclosure.

[0047] Figure 6 An example of signaling for indicating available time slots for multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0048] Figure 7 An example of determining available time slots for multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0049] Figure 8 Examples of conflict resolution for multiple SRS transmissions triggered by DCI are shown, according to various aspects of this disclosure.

[0050] Figure 9 An example of a process flow supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0051] Figure 10 An example of a process flow supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0052] Figure 11 and 12 A block diagram of a device supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0053] Figure 13 A block diagram of a communication manager supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0054] Figure 14A diagram of a system including devices supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0055] Figure 15 and 16 A block diagram of a device supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0056] Figure 17 A block diagram of a communication manager supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0057] Figure 18 A diagram of a system including devices supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown.

[0058] Figures 19 to 21 A flowchart illustrating a method for supporting multiple SRS transmissions triggered by DCI according to various aspects of this disclosure is shown. Detailed Implementation

[0059] In some wireless communication systems, user equipment (UE) can be configured to transmit sounding reference signal (SRS) resource sets to a base station. The UE can support both periodic and aperiodic transmission of SRS resource sets. To facilitate aperiodic transmission of SRS resource sets, the base station can send downlink control information (DCI) to the UE to trigger the transmission of SRS resource sets. In some cases, to improve reliability, the base station can send multiple DCI messages to the UE via at least one transmit and receive point (TRP), and each DCI message can trigger the UE to transmit at least one SRS resource set. In other cases, the base station can send a single DCI message that triggers the UE to transmit multiple SRS resource sets. In any case, enabling the UE to identify the appropriate resources for transmitting multiple SRS resource sets (e.g., to efficiently utilize resources and prevent collisions) can be challenging.

[0060] As described herein, wireless communication systems can support efficient techniques at the UE for transmitting multiple SRS resource sets. Specifically, the UE can use the techniques described herein to identify time slots in which multiple SRS resource sets triggered by one or more DCI messages are transmitted. In one aspect, the UE can determine the next available time slot for transmitting the SRS resource set based on available information at a timestamp and a reference time slot (e.g., the time slot in which the latest DCI message is received or a time slot offset from the time slot in which the latest DCI message is received). In another aspect, the UE can receive an indication of one or more time slots in which multiple SRS resource sets are to be transmitted. In yet another aspect, the UE can follow one or more rules to identify time slots in which multiple SRS resource sets are to be transmitted. In yet another aspect, the UE can support conflict resolution techniques to identify time slots in which multiple SRS resource sets are to be transmitted when the UE is triggered to transmit multiple SRS resource sets in the same time slot.

[0061] The aspects of this disclosure described above are described below in the context of a wireless communication system. Examples of procedures and signaling exchanges supporting multiple SRS transmissions triggered by a DCI are then described. Aspects of this disclosure are further illustrated by apparatus diagrams, system diagrams, and flowcharts relating to multiple SRS transmissions triggered by a DCI, and are described with reference to these diagrams.

[0062] Figure 1 Examples of a wireless communication system 100 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, are shown. 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 improved 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, or communication with low-cost and low-complexity devices, or any combination thereof.

[0063] Base stations 105 can be distributed throughout a geographical area to form a wireless communication system 100, and can be devices of different forms or with different capabilities. Base stations 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 where base station 105 and UE 115 can support signal transmission according to one or more radio access technologies.

[0064] UE 115 can be distributed throughout the entire coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary, mobile, or both at different times. UE 115 can be devices of different forms or with different capabilities. Figure 1 Some example UE 115s are shown in the document. The UE 115 described herein is capable of communicating with various types of devices, such as other UE 115s, base station 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as... Figure 1 As shown.

[0065] Base station 105 can communicate with core network 130, communicate with each other, or perform both of these operations. For example, base station 105 can interface with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base station 105 can communicate with each other directly (e.g., directly between base stations 105) on backhaul links 120 (e.g., via X2, Xn, or other interfaces), or indirectly (e.g., via core network 130), or perform both of these operations. In some examples, backhaul link 120 can be or includes one or more radio links.

[0066] 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 station transceiver, radio base station, access point, radio transceiver, node B, evolved node B (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), home node B, home evolved node B, or some other suitable term.

[0067] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or some other suitable term, wherein "device" may also be referred to as a unit, station, terminal, or client, and other examples. 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, and other examples, which may be implemented in various items such as appliances, vehicles, meters, and other examples.

[0068] The UE 115 described in this document can communicate with various types of devices, such as other UE 115s that can sometimes act as repeaters, as well as base station 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, and other examples, such as... Figure 1 As shown.

[0069] 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 a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates 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 operation for the carrier, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0070] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition or control signaling that coordinates operation against 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 positioned according to a channel grid for discovery by UE 115. The carrier may operate in standalone mode, where UE 115 performs initial acquisition and connection via the carrier, or the carrier may operate in non-standalone mode, where different carriers (e.g., the same or different radio access technologies) are used to anchor the connection.

[0071] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105 (e.g., in a Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH)) or downlink transmission from base station 105 to UE 115 (e.g., in a Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH)). A carrier may carry either 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).

[0072] The signal waveform transmitted on a carrier can consist of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as Orthogonal Frequency Division Multiplexing (OFDM) or Discrete Fourier Transform Spread Spectrum OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element can 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 can depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements UE 115 receives and the higher the order of the modulation scheme, the higher the data rate can be for UE 115. 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 the use of multiple spatial layers can further increase the data rate or data integrity used for communication with UE 115.

[0073] One or more digital schemes (numerologies) can be supported for a carrier, where the digital scheme may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier can be divided into one or more BWPs with the same or different digital schemes. In some examples, 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 UE 115 can be restricted to one or more active BWPs.

[0074] It can be expressed in a basic unit of time (which can be, for example, T). s =1 / (Δf) max ·N f The sampling period is ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, and N f The time interval for base station 105 or UE 115 can be represented as a multiple of the maximum supported Discrete Fourier Transform (DFT) size. The time interval for communication resources can be organized based on radio frames, each having 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).

[0075] 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 be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of 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 a number of symbol periods (e.g., this depends 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 micro-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0076] A subframe, time slot, micro-time 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. Alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst form of a shortened TTI (sTTI)).

[0077] Physical channels can be multiplexed on a carrier using various techniques. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels on a downlink carrier. 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 group of UEs 115. For example, one or more of the UEs 115 can monitor or search for control regions against control information based on one or more search space sets, and each search space set can include one or more control channel candidates arranged in a cascaded manner at one or more aggregation levels. The 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 for 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 used to send control information to a specific UE 115.

[0078] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used (e.g., on a carrier) to communicate with base station 105 and may be associated with an identifier used to distinguish neighboring cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or other identifier). 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. Depending on various factors (such as the capabilities of base station 105), the range of such cells can range from small areas (e.g., structures, subsets of structures) to large areas. For example, a cell may be or include buildings, subsets of buildings, or external space between or overlapping geographic coverage areas 110, and other examples.

[0079] In some examples, base station 105 may be mobile, and therefore provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but 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 for various geographic coverage areas 110.

[0080] Wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private or group communication and can be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData)). Support for mission-critical functions can include service prioritization, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency are used interchangeably herein.

[0081] In some examples, UE 115 is able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using peer-to-peer (P2P) or D2D protocols). One or more UE 115s utilizing D2D communication can be within the geographic coverage area 110 of base station 105. Other UE 115s in such a group may be outside the geographic coverage area 110 of base station 105 or otherwise unable to receive transmissions from base station 105. In some examples, groups of UE 115s communicating via D2D communication can 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 UE 115s without involving base station 105.

[0082] Core network 130 can provide 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), and can include at least one control plane entity (e.g., a mobility management entity (MME), access and mobility management function unit (AMF)) 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 unit (UPF)) routing packets to or interconnecting with external networks. The control plane entity can manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by base station 105 associated with core network 130. User IP packets can be transmitted through the user plane entity, which can provide IP address allocation and other functions. The user plane entity can connect to IP service 150 for one or more network operators. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0083] Some network devices (e.g., 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 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 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 individual network devices (e.g., radio headends and ANCs) or incorporated into a single network device (e.g., base station 105).

[0084] Wireless communication system 100 can operate using one or more frequency bands (typically in the range of 300 MHz to 300 GHz). The region from 300 MHz to 3 GHz is often referred to as the Ultra High Frequency (UHF) region or decimeter band because the wavelength range extends from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves can be sufficiently permeable to penetrate structures for use in macrocells to provide service to UE 115 located indoors. Compared to the transmission of smaller frequencies and longer waves in the lower 300 MHz portion of the spectrum in the High Frequency (HF) or Very High Frequency (VHF) regions, UHF wave transmission can be associated with smaller antennas and shorter distances (e.g., less than 100 km).

[0085] Wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, wireless communication system 100 can 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 frequency spectrum bands, devices (such as base station 105 and UE 115) can employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands can be based on carrier aggregation configurations that combine component carriers operating in licensed frequency bands (e.g., LAA). Operation in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and other examples.

[0086] Base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ techniques 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 (which may 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 having a number of 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, antenna panels may support radio frequency beamforming for signals transmitted via antenna ports.

[0087] 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 form or guide an antenna beam (e.g., transmit beam, 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 specific orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements can include applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with the transmitting or receiving device. The adjustments associated with each antenna element can be defined by a set of beamforming weights associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device, or relative to some other orientation).

[0088] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer can perform packet fragmentation and reassembly for transmission over logical channels. The Media Access Control (MAC) layer can perform priority handling and multiplexing of logical channels to transport channels. The MAC layer can also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide the establishment, configuration, and maintenance of RRC connections (which support radio bearers for user plane data) between the UE 115 and the base station 105 or core network 130. At the physical layer, transport channels can be mapped to physical channels.

[0089] In the wireless communication system 100, UE 115 can be configured to transmit SRS resource sets to base station 105. UE 115 can support periodic and aperiodic transmission of SRS resource sets. To facilitate aperiodic transmission of SRS resource sets, base station 105 can transmit a DCI to UE 115 to trigger the transmission of the SRS resource set. The DCI can be referred to as the triggering DCI, and the PDCCH carrying the DCI can be referred to as the triggering PDCCH. A given aperiodic SRS resource set can be transmitted in the (t+1)th available time slot counted from the reference time slot (e.g., instead of using a fixed time slot offset from the triggering DCI). UE 115 can receive RRC signaling indicating one or more values ​​of t for each SRS resource set, where candidate values ​​of t include at least zero. In some cases, the value of t associated with the SRS resource set can be updated. The value of t can then be indicated in the DCI (e.g., uplink or downlink DCI) (e.g., explicitly or implicitly). Alternatively, the value of t can be indicated in the RRC signaling (e.g., if only one value of t is configured in the RRC). Furthermore, the reference time slot can be a time slot that includes a DCI (e.g., a trigger DCI), or the reference time slot can be a time slot with an offset value (e.g., a trigger offset) indicated from a time slot offset DCI that includes a DCI.

[0090] The definition of available time slots can take into account UE processing complexity, the timeline for determining available time slots, and potential coexistence with conflict handling. Based solely on RRC configuration, an available time slot can refer to a time slot that meets one or more conditions. The first condition can be that the time slot includes an uplink or flexible symbol in the time domain location of all SRS resources in the SRS resource set. The second condition can be that the time slot meets the minimum timing requirement between triggering the PDCCH and all SRS resources in the SRS resource set.

[0091] Figure 2Several options 200 are shown for determining the available time slots for sending the SRS resource set. Figure 2 In this configuration, the first time slot 205-a, the second time slot 205-b, the third time slot 205-c, the fourth time slot 205-d, and the fifth time slot 205-e can be configured as uplink. Base station 105 can send DCI 210 to UE 115, which triggers the transmission of two aperiodic SRS resource sets: SRS resource set 215 (e.g., SRS resource set #1) and SRS resource set 220 (e.g., SRS resource set #2). Base station 105 can also indicate (e.g., via DCI 210, RRC, or both): for SRS resource set 215 (e.g., the first SRS resource set), t = 0, and for SRS resource set 220 (e.g., the second resource set), t = 1, where t corresponds to the available time slots for the SRS resource sets.

[0092] In option 200-a, the reference time slot can be a time slot including DCI 210 (e.g., time slot 205-a). Therefore, UE 115 can transmit SRS resource set 215 at a first (t=0) available time slot, and UE 115 can transmit SRS resource set 220 at a second (t=1) available time slot. Because the second time slot 205-b and the third time slot 205-c can be configured for downlink, the first available time slot can be time slot 205-d, and the second available time slot can be time slot 205-e. In option 200-b, the reference time slot can be a time slot offset from the time slot including DCI 210. DCI 210 can indicate different offsets of the reference time slot for different SRS resource sets. For example, the time slot offset 225 for SRS resource set 215 can be one, and the time slot offset 230 for SRS resource set 220 can be two.

[0093] Therefore, the reference time slot for SRS resource set 215 can be time slot 205-b, and the reference time slot for SRS resource set 220 can be time slot 205-c. Since the second time slot 205-b and the third time slot 205-c can be configured as downlinks, the first available time slot for SRS resource set 215 after the second time slot 205-b (e.g., the reference time slot) can be time slot 205-d, and the second available time slot for SRS resource set 220 after the third time slot 205-c (e.g., the reference time slot) can be time slot 205-e. In some cases, when determining available time slots (e.g., based on offset value t), only available time slots may be counted. Furthermore, in some cases, the term "first available time slot" may refer to the first available time slot in time (e.g., with a value of t=0), and in other cases, the term "first available time slot" may be used to distinguish it from another available time slot (e.g., the second or third available time slot), and may refer to an available time slot with any value of t.

[0094] In some cases, to improve reliability, base station 105 may send multiple DCI messages to UE 115 via multiple TRPs, and each DCI message may trigger UE 115 to send at least one SRS resource set. That is, base station 105 may utilize PDCCH repetition to increase reliability via multiple TRPs. In other cases, base station 105 may send a single DCI message that triggers UE 115 to send multiple SRS resource sets. For example, a single DCI may trigger two SRS resource sets, one for the codebook and one for non-codebook uses. UE 115 can then send the SRS resource sets to base station 105.

[0095] In some aspects, when UE 115 is triggered to transmit multiple SRS resource sets, enabling UE 115 to identify the appropriate resources for transmitting multiple SRS resource sets (e.g., to efficiently utilize resources and prevent collisions) can be challenging. Wireless communication system 100 can support efficient techniques for transmitting multiple SRS resource sets at UE 115. For example, the techniques described herein can address the timeline for determining available time slots when two PDCCHs are transmitted from two TRPs (e.g., for reliability). Furthermore, the techniques described herein can address DCI-based indication of available time slots for multiple (e.g., two) aperiodic SRS resource sets. Additionally, the techniques described herein can provide rules for determining available time slots for multiple (e.g., two or more) triggered SRS resource sets.

[0096] Figure 3 An example of a wireless communication system 300 supporting multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, is shown. The wireless communication system 300 includes a UE 115-a, which may be a reference... Figure 1 and 2 An example of UE 115 is described. The wireless communication system 300 also includes a base station 105-a, which may be a reference... Figure 1 and 2 An example of base station 105 is described. Base station 105-a can provide communication coverage for coverage area 110-a. Wireless communication system 300 can implement various aspects of wireless communication system 100. For example, wireless communication system 300 can support efficient techniques for transmitting multiple SRS resource sets at UE 115-a.

[0097] Base station 105-a may send one or more DCI messages 305 to UE 115-a, which triggers the transmission of multiple SRS resource sets from UE 115-a, including SRS resource set 310 and SRS resource set 315. Upon receiving one or more DCI messages 305, UE 115-a may use the techniques described herein to identify the time slot in which SRS resource set 310 and SRS resource set 315 are transmitted. In one aspect, UE 115-a may determine the next available time slot for transmitting the SRS resource set (e.g., SRS resource set 310) based on available information at a timestamp and based on a reference time slot. The reference time slot may be the time slot in which the latest DCI message in one or more DCI messages 305 is received, or a time slot offset from the time slot in which the latest DCI message in one or more DCI messages 305 is received. In another aspect, UE 115-a may receive an indication of one or more time slots in which multiple SRS resource sets are transmitted. In another aspect, UE 115-a may follow one or more rules to identify time slots in which multiple SRS resource sets are transmitted. In yet another aspect, UE 115-a may support conflict resolution techniques to identify time slots in which multiple SRS resource sets are transmitted when UE 115-a is triggered to transmit multiple SRS resource sets in the same time slot.

[0098] Figure 4Multiple options 400 for determining available time slots using PDCCH repetition, according to various aspects of this disclosure, are illustrated. Each option 400 shows a single timestamp at which UE 115 can determine the next available time slot for transmitting an SRS resource set. UE 115 can determine what the next available time slot is based on the availability information at the single timestamp. In both options 400, base station 105 can transmit and UE 115 can receive a first DCI 405 from a first TRP triggering transmission of a first SRS resource set and a second DCI 410 from a second TRP triggering transmission of a second SRS resource set. In some cases, the first DCI 405 and the second DCI 410 can be the same (i.e., include the same payload), and both the first DCI 405 and the second DCI 410 can trigger transmissions of both the first and second SRS resource sets. Base station 105 can transmit each DCI in PDCCH 415, and UE 115 can receive each DCI in PDCCH 415 (e.g., shown in option 400-a). UE 115 can then identify available resources 420 in at least two time slots to transmit a first SRS resource set and a second SRS resource set. Although Figure 4 The first DCI 405 and the second DCI 410 are shown to be received in the same time slot (e.g., in the first and second PDCCHs, respectively), but it should be understood that the techniques described herein are applicable to scenarios in which the first DCI 405 and the second DCI 410 are received in different time slots (e.g., time slot n and time slot n+k).

[0099] In option 400-a, timestamp 425-a can be the last symbol of the second PDCCH 415 (e.g., including the second DCI 410), or the last symbol of the search space associated with the second PDCH (e.g., including the last symbol of the coreset of the second PDCCH). The UE 115 can then identify available time slots for transmitting the SRS resource set after a processing time 430-a (T_proc) following the timestamp. That is, the first candidate available time slot can be a time slot following the processing time (T_proc) following the timestamp. The processing time (T_proc) can refer to the minimum duration (e.g., minimum processing timeline capability) allocated to the UE 115 for processing the second DCI 410, and can be counted based on symbols. The processing time 430-a (T_proc) can be associated with UE capabilities or can be configured via RRC signaling.

[0100] In option 400-b, timestamp 425-b may be a symbol that reaches processing time 430-b (T_proc) before one or more symbols in the candidate available time slots for the first SRS resource set (e.g., available resource 420). That is, timestamp 425-b may reach processing time 430-b (T_proc) before one or more symbols. Timestamp 425-b may be referred to as n-T_proc, where n is the time at which UE 115 can begin transmission of the first symbol of the triggered transmission of the SRS resource set. The first symbol of the triggered transmission of the SRS resource set (e.g., the first symbol of available resource 420) may be referred to as the start position and may be configured with RRC per SRS resource. In some cases, UE 115 may receive and correctly decode the second DCI 410 (e.g., in the second PDCCH) via timestamp 425-b. In other cases, UE 115 may receive and correctly decode at least one of the first DCI 405 or the second DCI 410 via timestamp 425-b.

[0101] Figure 5 Several options 500 for determining available time slots for utilizing PDCCH repetition are shown according to various aspects of this disclosure. Figure 5 In this configuration, the first time slot 505-a, the second time slot 505-b, the third time slot 505-c, the fourth time slot 505-d, and the fifth time slot 505-e can be configured as uplink. Base station 105 can transmit a first DCI 510 in the first time slot 505-a to trigger the transmission of the first SRS resource set 520, and base station 105 can transmit a second DCI 515 in the second time slot 505-b to trigger the transmission of the second SRS resource set. UE 115 can receive the first DCI 510 and the second DCI 515 and identify the appropriate time slot in which to transmit the first SRS resource set 520 and the second SRS resource set.

[0102] The determination of available time slots at UE 115 can begin with counting from a reference time slot. Specifically, the first DCI 510 may include a first available time slot offset for the first SRS resource set 520, and the second DCI 515 may include a second available time slot offset for the second SRS resource set. UE 115 can then identify available time slots for transmitting the first SRS resource set 520 based on the reference time slot and the first available time slot offset, wherein the available time slots for the first SRS resource set 520 are offset from the reference time slot by the first available time slot offset (e.g., only available time slots are counted). Similarly, UE 115 can identify available time slots for transmitting the second SRS resource set based on the reference time slot and the second available time slot offset, wherein the available time slots for the second SRS resource set are offset from the reference time slot by the second available time slot offset (e.g., only available time slots are counted).

[0103] As mentioned above, the first available time slot offset and the second available time slot offset (i.e., the offset used to identify available time slots for transmitting the SRS resource set) can specifically refer to available time slots. Therefore, the time slot indicated by the offset (t) can be the t-th available time slot following the reference time slot, rather than the t-th available time slot following the reference time slot (e.g., as in the case of a fixed or absolute offset). Therefore, UE 115 can determine the available time slots for transmitting the SRS resource set by counting the available time slots (e.g., rather than all time slots) based on the offset. That is, UE 115 can determine the available time slots for the SRS resource set, at least in part, based on the offset, by counting the available time slots corresponding to the offset (e.g., where the number of available time slots between the reference time slot and the available time slots for the SRS resource set equals the offset).

[0104] In both options 500-a and 500-b, the reference time slot can be the same for the first SRS resource set and the second SRS resource set.

[0105] In option 500-a, the reference time slot can be the time slot in which the latest DCI (e.g., the second DCI 515) is received. That is, the reference time slot can be based on the triggering DCI, and for the case where the reference time slot is based on the triggering DCI, the reference time slot is the time slot in which the second DCI 515 is received (e.g., in the second PDCCH). Therefore, the reference time slot in option 500-a can be time slot 505-b. Furthermore, for the first SRS resource set, DCI 510 can indicate a value of t=0. Therefore, since time slot 505-c can be configured for downlink, UE 115 can determine that time slot 505-d is the first available time slot after reference time slot 505-b, and UE 115 can transmit SRS resource set 520 in time slot 505-d.

[0106] In option 500-b, the reference timeslot may be a timeslot offset from the timeslot in which the latest DCI (e.g., the second DCI 515) is received. An offset 525 between the timeslot in which the latest DCI is received and the reference timeslot may be indicated in the latest DCI. Offset 525 may be referred to as trigger offset 525. That is, the reference timeslot may be based on the timeslot indicated by the trigger offset, and for the case where the reference timeslot is based on the timeslot indicated by the trigger offset, the reference timeslot may be based on the trigger offset 525 determined according to the latest DCI or PDCCH (e.g., the second DCI 515). The trigger offset 525 may be different from the offset (t) used to determine the available timeslots for the SRS resource set. The trigger offset 525 in option 500-b may be one, and therefore, the reference timeslot may be timeslot 505-c (i.e., a timeslot following the timeslot in which the second DCI 515 is received). Furthermore, for the first SRS resource set, DCI 510 may indicate a value of t = 0. Therefore, UE 115 can determine that time slot 505-d is the first available time slot after reference time slot 505-c, and UE 115 can send SRS resource set 520 in time slot 505-d.

[0107] Figure 6 Examples of first signaling 600-a and second signaling 600-b for indicating available time slots of multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, are shown. Figure 6 In this configuration, the first time slot 605-a can be configured as downlink (D), the second time slot 605-b can be configured as downlink, the third time slot 605-c can be configured as uplink (U), the fourth time slot 605-d can be configured as flexible (F), the fifth time slot 605-e can be configured as downlink, the sixth time slot 605-f can be configured as downlink, the seventh time slot 605-g can be configured as uplink, and the eighth time slot 605-h can be configured as flexible (e.g., following the DDUF half-time slot format). Base station 105 can transmit DCI 610, which triggers the transmission of multiple SRS resource sets, including the first SRS resource set 615 and the second SRS resource set 620. That is, a single DCI can trigger one or more SRS resource sets (e.g., regardless of the purpose of the SRS resource set). Multiple SRS resource sets can be two codebook-based SRS resource sets (e.g., for codebook transmission), two non-codebook-based SRS resource sets (e.g., for non-codebook-based transmission), two antenna-switching SRS resource sets, two beam management SRS resource sets, or any combination thereof.

[0108] In some cases, each SRS resource set can be configured with one or more candidate available time slots by RRC (e.g., a single candidate available time slot (t value) or a list of candidate available time slots (multiple t values)). For example, base station 105 can send an RRC message to UE 115 indicating a trigger (e.g., aperiodic-SRS-ResourceTrigger) or a trigger list (e.g., aperiodic-SRS-ResourceTriggerList) for each SRS resource set, where the trigger corresponds to a single candidate available time slot (t value) and the trigger list corresponds to a list of candidate available time slots (e.g., a list of t values). Base station 105 can then use DCI to indicate (or select) one of the candidate available time slots (e.g., t value). Table 1 below shows examples of the values ​​of the SRS request fields included in the DCI to indicate which SRS resource sets are triggered. The candidate available time slots for each triggered SRS set are indicated by DCI bit fields (e.g., time slot offset indicator), as shown in Table 2.

[0109] Table 1: SRS Requests

[0110]

[0111] Base station 105 may include any value in the SRS request field in the DCI to indicate the offset or t value corresponding to the available time slot in which UE 115 intends to transmit the SRS resource set. However, in Figure 6 In this embodiment, base station 105 can use a single DCI to trigger the transmission of multiple SRS resource sets. The techniques described herein allow base station 105 to indicate available time slots for transmitting multiple SRS resource sets in the DCI.

[0112] Base station 105 may first send, and UE 115 may receive, an RRC message indicating a first trigger list for a first SRS resource set 615 and a second trigger list for a second SRS resource set 620. The first trigger list may include two offset values ​​or values ​​of t: t = 0 and t = 1, and the second trigger list may also include two offset values ​​or values ​​of t: t = 0 and t = 2. Base station 105 may then indicate in DCI 610 a first available timeslot offset or t value from the first trigger list for the first SRS resource set 615 and a second available timeslot offset or t value from the second trigger list for the second SRS resource set 620. Table 2 below shows the correspondence between the indication and the offset or t value in the DCI.

[0113] Table 2: DCI Indication and Offset or t-value

[0114]

[0115] In the first signaling 600-a, base station 105 can transmit and UE 115 can receive DCI 610, which includes the same bit field or bit value for indicating or selecting available time slots for all triggered SRS resource sets (e.g., SRS resource set 615 and SRS resource set 620). This option can be applied to data scheduling DCI (e.g., to limit overhead). In one example, the bit field or bit value can be one (“1”), and according to Table 2, for the first SRS resource set 615, a bit field or bit value of one can correspond to t=1, and for the second SRS resource set 620, a bit field or bit value of one can correspond to t=2. Therefore, UE 115 can transmit the first SRS resource set 615 in the second available time slot, and UE 115 can transmit the second SRS resource set 620 in the third available time slot. Since time slots 605-a, 605-b, 605-e, and 605-f are downlink time slots, the first available time slot can be time slot 605-c, the second available time slot can be time slot 605-d, and the third available time slot can be time slot 605-g.

[0116] The same bit field used in the first signaling 600-a to indicate or select available time slots for all triggered SRS resource sets can be an explicit bit field or an implicit bit field. An example of an implicit bit field can be based on an SRS request (e.g., the association between a trigger code and an available time slot). In this example, the SRS request field in the DCI 610 used to trigger transmissions for the first SRS resource set 615 and the second SRS resource set 620 can be linked to a bit field or bit value (e.g., a) corresponding to an available time slot for the first SRS resource set 615 and the second SRS resource set 620.

[0117] In the second signaling 600-b, base station 105 can transmit and UE 115 can receive DCI 610, which includes multiple bit fields or bit values ​​for indicating or selecting available time slots for all triggered SRS resource sets (e.g., SRS resource set 615 and SRS resource set 620). This option can be applied to non-scheduled DCIs (e.g., DCI formatted as 0_1 or 0_2), where some of these fields can be reused to indicate the available time slots for each SRS resource set. Furthermore, the order of the bit fields or bit values ​​can follow the index of the SRS resource set (e.g., SRS resource set identifier (ID)) based on some rule (e.g., ascending or descending). For example, the first bit field or bit value can correspond to the SRS resource set with the lowest index, and the last bit field or bit value can correspond to the SRS resource set with the highest index, and vice versa.

[0118] In one example, a bit field or bit value can be zero or one (“01”), and the first bit field or value can correspond to the first SRS resource set 615, while the second bit field or bit value can correspond to the second SRS resource set 620. According to Table 2, for the first SRS resource set 615, a bit field or bit value of zero can correspond to t=0, and for the second SRS resource set 620, a bit field or bit value of one can correspond to t=2. Therefore, UE 115 can transmit the first SRS resource set 615 in the first available time slot, and UE 115 can transmit the second SRS resource set 620 in the third available time slot. Because time slots 605-a, 605-b, 605-e, and 605-f are downlink time slots, the first available time slot can be time slot 605-c, the second available time slot can be time slot 605-d, and the third available time slot can be time slot 605-g.

[0119] Figure 7 Examples of determining a first available time slot 700-a and a second available time slot 700-b for multiple SRS transmissions triggered by DCI, according to various aspects of this disclosure, are shown. Figure 7 In this configuration, the first time slot 705-a can be configured as a downlink, the second time slot 705-b can be configured as a downlink, the third time slot 705-c can be configured as an uplink, the fourth time slot 705-d can be configured as flexible, the fifth time slot 705-e can be configured as a downlink, the sixth time slot 705-f can be configured as a downlink, the seventh time slot 705-g can be configured as an uplink, and the eighth time slot 705-h can be configured as flexible (e.g., following the DDUF time slot format). The base station 105 can send a DCI 710 to the UE 115, which triggers the transmission of multiple SRS resource sets, including the first SRS resource set 715 and the second SRS resource set 720. That is, a single DCI can trigger one or more aperiodic SRS resource sets, where the SRS resource sets may or may not have overlapping time and frequency resources.

[0120] In addition to being triggered to transmit the first SRS resource set 715 and the second SRS resource set 720, the UE can also receive from the base station 105 an indication of available time slots in which the first SRS resource set 715 and the second SRS resource set 720 are to be transmitted. Specifically, the base station 105 can transmit, and the UE 115 can receive, indications of a first available time slot offset corresponding to the first available time slot for transmitting the first SRS resource set 715 and a second available time slot offset corresponding to the second available time slot for transmitting the second SRS resource set 720.

[0121] In some cases, it may be appropriate for UE 115 to identify a first available time slot before a second available time slot or to identify a second available time slot before a first available time slot (e.g., when SRS resource sets 715 and 720 have overlapping time or frequency allocations). UE 115 can then identify a second available time slot based on the first available time slot being unavailable, or vice versa.

[0122] As described herein, UE 115 can be configured with one or more rules to determine whether to identify the first available time slot before the second available time slot or the second available time slot before the first available time slot.

[0123] In one aspect, UE 115 may determine the SRS resource set for which UE 115 will first determine available time slots based on the offset or t-value associated with the SRS resource set. Specifically, UE 115 may first determine available time slots for the SRS resource set associated with the maximum or minimum offset or t-value. For example, DCI 710 may indicate the offset or t-value for each of the first SRS resource set 715 and the second SRS resource set 720, and UE 115 may determine the available time slots for the SRS resource set having the maximum or minimum offset or t-value.

[0124] In another scenario, UE 115 can determine the SRS resource set for which it will first identify available time slots based on the SRS resource set ID. Specifically, UE 115 can first identify available time slots for the SRS resource set with the largest or smallest ID.

[0125] In another aspect, UE 115 can determine the SRS resource sets for which it will first identify available time slots based on the purpose of the SRS resource sets. For example, UE 115 can first identify available time slots for SRS resource sets whose purpose is set for antenna switching, followed by SRS resource sets whose purpose is set for codebooks, then SRS resource sets whose purpose is set for beam management, and finally SRS resource sets whose purpose is set for non-codebooks. UE 115 can receive indications of the purpose of the SRS resource sets in RRC messages from base station 105.

[0126] In another aspect, UE 115 can determine the SRS resource set for which it will first determine available time slots based on the frequency resources allocated for transmitting the SRS resource set. For example, UE 115 can first determine available time slots for the SRS resource set scheduled for transmission on a portion of the frequency resources, followed by the SRS resource set scheduled for transmission on the entire set of frequency resources. UE 115 can receive an indication of frequency resource allocation for the SRS resources in a DCI or RRC message.

[0127] In another aspect, UE 115 can determine the SRS resource set for which it will first identify available time slots based on the configuration used for the SRS resource set. The configuration of the SRS resource set can refer to the number of SRS resources in the SRS resource set, the transmit power configured for the SRS resource set, the frequency hopping configuration used for the SRS resource set, the repetition configured for the SRS resource set, etc. Therefore, as an example, UE 115 can first determine available time slots for an SRS resource set with the minimum number of SRS resources, the highest transmit power, enabled or disabled frequency hopping configuration, and the maximum or minimum number of repetitions configured, etc.

[0128] In another aspect, UE 115 may not expect to be triggered (e.g., by a single DCI) to transmit multiple SRS resource sets (e.g., on overlapping time or frequency resources). Therefore, if UE 115 is triggered to transmit multiple SRS resource sets (e.g., in an error condition), UE 115 can suppress the transmission of SRS resource sets (e.g., UE 115 does not transmit any SRS resource sets).

[0129] As an example, Figure 7 The DCI 710 in the middle can indicate the first available time slot offset or t value for the first SRS resource set 715 as zero, and the second available time slot offset or t value for the second SRS resource set 720 as two.

[0130] In the first available time slot determination 700-a, UE 115 can determine the available time slot for the first SRS resource set 715 before the available time slot for the second SRS resource set 720. Since time slot 705-b can be configured as a downlink, UE 115 can determine that the available time slot for the first SRS resource set 715 corresponding to a t value of zero is time slot 705-c. Therefore, UE 115 can transmit the first SRS resource set 715 in time slot 705-c. Furthermore, since time slot 705-c can be considered unavailable, and time slots 705-b, 705-e, and 705-f can be configured as downlinks, UE 115 can determine that the available time slot for the second SRS resource set 720 corresponding to a t value of two is time slot 705-h. Therefore, UE 115 can transmit the second SRS resource set 720 in time slot 705-h.

[0131] In the second available time slot determination 700-b, UE 115 can determine the available time slot for the second SRS resource set 720 before the available time slot for the first SRS resource set 715. Since time slots 705-b, 705-e, and 705-f can be configured for downlink, UE 115 can determine that the available time slot for the second SRS resource set 720 corresponding to a t value of two is time slot 705-g. Therefore, UE 115 can transmit the second SRS resource set 720 in time slot 705-g. Furthermore, since time slot 705-b is configured for downlink, UE 115 can determine that the available time slot for the first SRS resource set 715 corresponding to a t value of zero is time slot 705-c. Therefore, UE 115 can transmit the first SRS resource set 715 in time slot 705-c.

[0132] Figure 8 Examples of a first conflict resolution 800-a and a second conflict resolution 800-b for multiple SRS transmissions triggered by a DCI, according to various aspects of this disclosure, are shown. Figure 8 In this configuration, the first time slot 805-a can be configured for downlink, the second time slot 805-b can be configured for downlink, the third time slot 805-c can be configured for uplink, and the fourth time slot 805-d can be configured flexibly (e.g., following the DDUF time slot format). Base station 105 can send DCI 810 to UE 115, which triggers the transmission of multiple SRS resource sets, including the first SRS resource set 815 and the second SRS resource set 820. That is, a single DCI can trigger one or more aperiodic SRS resource sets.

[0133] exist Figure 8In this context, base station 105 can indicate the same indication or configuration for available time slots for the first SRS resource set 815 and the second SRS resource set 820. For example, a single value of t=0 can be configured for both the first SRS resource set 815 and the second SRS resource set 820. As described herein, UE 115 can be configured with one or more rules for conflict resolution to handle situations where UE 115 is triggered to transmit multiple SRS resource sets (e.g., the first SRS resource set 815 and the second SRS resource set 820) in the same available time slot.

[0134] In one aspect, UE 115 can use different time-domain resources, enabling both the first SRS resource set 815 and the second SRS resource set 820 to be transmitted within the same available time slot. In this aspect, transmit power variations with back-to-back SRS symbols are acceptable. That is, UE 115 can transmit the first SRS resource set 815 within a first symbol subset within the same available time slot, and the second SRS resource set 820 within a second symbol subset within the same available time slot (e.g., with transmit power variations across symbols used for different SRS resource sets).

[0135] In another scenario, UE 115 can transmit either the first SRS resource set 815 or the second SRS resource set 820 within the same available time slot, and UE 115 can abandon or postpone the transmission of other SRS resource sets. That is, when UE 115 is triggered to transmit the first SRS resource set 815 and the second SRS resource set 820 on overlapping time and frequency resources, only one SRS resource set from the SRS resource set is transmitted on the overlapping frequency and time resources. UE 115 can select the SRS resource set to transmit based on one or more rules.

[0136] In one example, UE 115 may select the SRS resource set to transmit based on the SRS purpose configured for each SRS resource set (e.g., prioritizing the transmission of SRS resource sets used for downlink channel state information (CSI) acquisition). In another example, UE 115 may select the SRS resource set to transmit based on the SRS resource set ID used for each SRS resource set. In yet another example, UE 115 may select the SRS resource set to transmit based on the configuration used for each SRS resource set (e.g., prioritizing the transmission of SRS resource sets with the minimum number of SRS resources, the highest transmit power, enabled or disabled frequency hopping configuration, the maximum or minimum number of repetitions, etc.).

[0137] In both the first conflict resolution 800-a and the second conflict resolution 800-b, UE 115 can be triggered to transmit the first SRS resource set 815 and the second SRS resource set 820 in the same available time slot. For example, DCI 810 can indicate that the offset or t-value for both the first SRS resource set 815 and the second SRS resource set 820 is zero corresponding to time slot 805-c. In the first conflict resolution 800-a, UE 115 can transmit the second SRS resource set 820 in time slot 805-c, and UE 115 can postpone the transmission of the first SRS resource set to time slot 805-d. In the second conflict resolution 800-b, UE 115 can transmit the first SRS resource set 815 in time slot 805-c, and UE 115 can postpone the transmission of the second SRS resource set 820 to time slot 805-d.

[0138] Figure 9 An example of a process flow 900 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Process flow 900 includes a UE 115-b, which can be a reference... Figure 1-8 An example of UE115 is described. Process flow 900 also includes base station 105-b, which may be a reference. Figure 1-8 An example of a base station 105 is described. Process flow 900 can implement various aspects of the wireless communication system 300. For example, process flow 900 can support efficient techniques at UE 115-b for transmitting multiple SRS resource sets.

[0139] In the following description of process flow 900, the signaling exchanged between UE 115-b and base station 105-b may be exchanged in a different order than the example order shown, or the operations performed by UE 115-b and base station 105-b may be performed in a different order or at different times. Some operations may also be omitted from process flow 900, and other operations may be added to process flow 900. Furthermore, although process flow 900 and process flow 1000 depict some different signaling and operations, it should be understood that the techniques described with reference to process flow 900 can be combined with the techniques described with reference to process flow 1000.

[0140] At 905, base station 105-b can transmit and UE 115-b can receive a first DCI from a first TRP, the first DCI triggering the transmission of a first SRS resource set. At 910, base station 105-b can transmit and UE 115-b can receive a second DCI from a second TRP, the second DCI triggering the transmission of a second SRS resource set. In some cases, the first DCI and the second DCI can be the same (e.g., including the same payload). In such cases, both the first DCI and the second DCI can trigger the transmission of the first SRS resource set and the second SRS resource set. Furthermore, the first DCI and the second DCI can include parameters for UE 115-b to transmit the first SRS resource set and the second SRS resource set (e.g., a first available timeslot offset(t) for the first SRS resource set and a second available timeslot offset(t) for the second SRS resource set).

[0141] At 915, UE 115-b can identify a timestamp at which it determines at least one available time slot for transmitting the first SRS resource set (e.g., available time slots for both the first and second SRS resource sets). In some cases, UE 115-b can identify the timestamp as the last symbol of the control channel including the second DCI or the last symbol of the search space associated with the control channel including the second DCI. In such cases, UE 115-b can identify a first available time slot for the first SRS resource set from one or more candidate time slots following the processing time after the timestamp. In other cases, UE 115-b can identify the timestamp as a symbol preceding one or more symbols in the candidate time slots available for the first SRS resource set up to the processing time. In such cases, UE 115-b can identify a first available time slot for the first SRS resource set from one or more candidate time slots following the timestamp. Furthermore, the second DCI can be received and correctly decoded via a timestamp, or only the first DCI can be received and correctly decoded via a timestamp (e.g., the second DCI can be received and correctly decoded after the timestamp).

[0142] At 920, UE 115-b can identify reference time slots for the first SRS resource set and the second SRS resource set. In some examples, UE 115-b can determine the reference time slot as the time slot in which the second DCI is received. In other examples, UE 115-b can receive an indication of the offset in the second DCI, and UE 115-b can determine the reference time slot based on the offset and the time slot in which the second DCI is received. UE 115-b can then identify a first available time slot for the first SRS resource set and a second available time slot for the second SRS resource set, wherein the first available time slot is offset from the reference time slot by the first available time slot offset indicated in the first DCI, and the second available time slot is offset from the reference time slot by the second available time slot offset indicated in the second DCI. At 925, UE 115-b can transmit and base station 105-b can receive the first SRS resource set in the first available time slot, and at 930, UE 115-b can transmit and base station 105-b can receive the second SRS resource set in the second available time slot.

[0143] Figure 10 An example of a process flow 1000 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Process flow 1000 includes a UE 115-c, which can be a reference... Figure 1-9 An example of UE 115 is described. Process flow 1000 also includes base station 105-c, which may be a reference. Figure 1-9 An example of a base station 105 is described. Process flow 1000 can implement various aspects of the wireless communication system 300. For example, process flow 1000 can support efficient techniques at UE 115-c for transmitting multiple SRS resource sets.

[0144] In the following description of process flow 1000, the signaling exchanged between UE 115-c and base station 105-c may be exchanged in a different order than the example order shown, or the operations performed by UE 115-c and base station 105-c may be performed in a different order or at different times. Some operations may also be omitted from process flow 1000, and other operations may be added to process flow 1000. Furthermore, although process flow 1000 and process flow 900 depict some different signaling and operations, it should be understood that the techniques described with reference to process flow 1000 can be combined with the techniques described with reference to process flow 900.

[0145] At 1005, base station 105-c can transmit and UE 115-c can receive a configuration message (e.g., an RRC message) indicating a first offset list for a first SRS resource set and a second offset list for a second SRS resource set. At 1010, base station 105-c can then transmit and UE 115-c can receive a DCI that triggers transmissions for the first and second SRS resource sets. At 1015, UE 115-c can identify a first available timeslot offset from a reference timeslot in the DCI to identify a first available timeslot for the first SRS resource set, and at 1020, UE 115-c can identify a second available timeslot offset from a reference timeslot in the DCI to identify a second available timeslot for the second SRS resource set.

[0146] Therefore, the DCI can indicate a first available time slot offset from a first offset list corresponding to a first available time slot for a first SRS resource set, and a second available time slot offset from a second offset list corresponding to a second available time slot for a second SRS resource set. In some cases, base station 105-c can transmit in the DCI and UE 115-c can receive in the DCI a bit field indicating the first and second available time slot offsets. In other cases, base station 105-c can transmit in a configuration message and UE 115-c can receive in the configuration message a first list of trigger codes for triggering transmission of the first SRS resource set and a second list of trigger codes for triggering transmission of the second SRS resource set. Each trigger code in the first list can correspond to an offset for the first SRS resource set, and each trigger code in the second list can correspond to an offset for the second SRS resource set. Then, base station 105-c can transmit in the DCI and UE 115-c can receive in the DCI a trigger code that triggers the transmission of a first SRS resource set and indicates a first available time slot offset from a first list of trigger codes, and a trigger code that triggers the transmission of a second SRS resource set and indicates a second available time slot offset from a second list of trigger codes. In other cases, base station 105-c can transmit and UE 115-c can receive a first bit field indicating a first available time slot offset and a second bit field indicating a second available time slot offset. In such cases, UE 115-c can determine that the first bit field indicates a first available time slot offset and the second bit field indicates a second available time slot offset based on the order of the first bit field and the second bit field in the DCI.

[0147] In some aspects, UE 115-c can identify a first available time slot for a first SRS resource set before a second available time slot for a second SRS resource set, and UE 115-c can identify a second available time slot for a second SRS resource set based on the first available time slot being unavailable for the second SRS resource set. In such aspects, UE 115-c can identify a first available time slot before a second available time slot based on a first available time slot offset being greater than a second available time slot offset. Alternatively, UE 115-c can identify a first available time slot before a second available time slot based on a first available time slot offset being less than a second available time slot offset. Alternatively, UE 115-c can identify a first available time slot before a second available time slot based on a first index of the first SRS resource set and a second index of the second SRS resource set.

[0148] Alternatively, UE 115-c may identify the first available time slot prior to the second available time slot based on a first use of the first SRS resource set and a second use of the second SRS resource set. Alternatively, UE 115-c may identify the first available time slot prior to the second available time slot based on the first SRS resource set being scheduled for transmission on a portion of the frequency resources (e.g., and the second SRS resource set being scheduled for transmission across the entire frequency band of the frequency resources). Alternatively, UE 115-c may identify the first available time slot prior to the second available time slot based on a first configuration of the first SRS resource set and a second configuration of the second SRS resource set, wherein the first and second configurations include the number of SRS resources, transmit power, frequency hopping configuration, or the number of repetitions for each SRS resource set.

[0149] At 1025, UE 115-c can then transmit and base station 105-c can receive the first SRS resource set in the first available time slot, and at 1030, UE 115-c can transmit and base station 105-c can receive the second SRS resource set in the second available time slot. However, in some cases, the first available time slot indicated for the first SRS resource set and the second available time slot indicated for the second SRS resource set can be the same time slot. In such an aspect, UE 115-c can transmit the first SRS resource set on a first subset of symbols in the same time slot, and UE 115-c can transmit the second SRS resource set on a second subset of symbols in the same time slot. Alternatively, UE 115-c can transmit either the first SRS resource set or the second SRS resource set (e.g., and discard or postpone other SRS resource sets). UE 115-c can determine whether to send the first SRS resource set or the second SRS resource set based on the first purpose, index or configuration of the first SRS resource set and the second purpose, index or configuration of the second SRS resource set.

[0150] Figure 11 A block diagram 1100 of a device 1105 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Device 1105 may be an example of various aspects of a UE 115 as described herein. Device 1105 may include a receiver 1110, a transmitter 1115, and a communications manager 1120. Device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0151] Receiver 1110 may provide a unit 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 associated with multiple probe reference signal transmissions triggered by downlink control information). Information may be passed to other components of device 1105. Receiver 1110 may utilize a single antenna or a collection of multiple antennas.

[0152] Transmitter 1115 may provide a unit 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 associated with multiple probe reference signal transmissions triggered by downlink control information). 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.

[0153] The communication manager 1120, receiver 1110, transmitter 1115, or various combinations thereof, or various components thereof, may be examples of units for performing various aspects of the transmission of multiple probe reference signals triggered by downlink control information as described herein. For example, the communication manager 1120, receiver 1110, transmitter 1115, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0154] In some examples, the communication manager 1120, receiver 1110, transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The 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 or otherwise support units for performing the functions described herein. In some examples, a processor and memory coupled to a 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).

[0155] Alternatively or concurrently, in some examples, the communication manager 1120, receiver 1110, transmitter 1115, or various combinations or components thereof, may be implemented using code executed by a processor (e.g., as communication management software or firmware). If implemented using processor-executed code, the functionality of the communication manager 1120, receiver 1110, transmitter 1115, 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., a unit configured or otherwise supported for performing the functions described in this disclosure).

[0156] In some examples, the communication manager 1120 may be configured to use or otherwise cooperate with the receiver 1110, transmitter 1115, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 1120 may receive information from the receiver 1110, send information to the transmitter 1115, or integrate with the receiver 1110, transmitter 1115, or both to receive information, send information, or perform various other operations as described herein.

[0157] According to the examples disclosed herein, the communication manager 1120 may support wireless communication at the UE. For example, the communication manager 1120 may be configured or otherwise supported to support elements for receiving first downlink control information from a first transmitting and receiving point (e.g., at a first time), the first downlink control information triggering the transmission of a first probe reference signal resource set. The communication manager 1120 may be configured or otherwise supported to support elements for receiving second downlink control information from a second transmitting and receiving point (e.g., at a second time different from the first time), the second downlink control information triggering the transmission of a second probe reference signal resource set. The communication manager 1120 may be configured or otherwise supported to support elements for identifying reference time slots for the first and second probe reference signal resource sets. The communication manager 1120 may be configured or otherwise support elements for identifying a first available time slot for a first probe reference signal resource set and a second available time slot for a second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by an offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by an offset indicated in the second downlink control information. The communication manager 1120 may be configured or otherwise support elements for transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0158] Alternatively or additionally, according to the examples disclosed herein, the communication manager 1120 may support wireless communication at the UE. For example, the communication manager 1120 may be configured or otherwise supported to support elements for receiving configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The communication manager 1120 may be configured or otherwise supported to support elements for receiving downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. The communication manager 1120 may be configured or otherwise supported to support elements for transmitting the first probe reference signal resource set in the first available time slot, transmitting the second probe reference signal resource set in the second available time slot, or both.

[0159] By including or configuring the communication manager 1120 according to the examples described herein, device 1105 (e.g., a processor that controls or is otherwise coupled to receiver 1110, transmitter 1115, communication manager 1120, or any combination thereof) can support techniques for more efficient utilization of communication resources. In particular, the UE can efficiently identify resources on which it transmits SRS to the base station, and the base station can use SRS to efficiently schedule communication with the UE. This efficient scheduling can lead to improved communication reliability, reduced latency, lower power consumption, and improved utilization of processing power.

[0160] Figure 12 A block diagram 1200 of a device 1205 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Device 1205 may be an example of aspects of device 1105 or UE 115 as described herein. Device 1205 may include a receiver 1210, a transmitter 1215, and a communications manager 1220. Device 1205 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0161] Receiver 1210 may provide a unit 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 associated with multiple probe reference signal transmissions triggered by downlink control information). Information may be transmitted to other components of device 1205. Receiver 1210 may utilize a single antenna or a collection of multiple antennas.

[0162] Transmitter 1215 may provide a unit for transmitting signals generated by other components of device 1205. For example, transmitter 1215 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 associated with multiple probe reference signal transmissions triggered by downlink control information). In some examples, transmitter 1215 may be co-located with receiver 1210 in a transceiver module. Transmitter 1215 may utilize a single antenna or a collection of multiple antennas.

[0163] Device 1205 or its various components may be examples of units for performing various aspects of multiple probe reference signal transmissions triggered by downlink control information as described herein. For example, communication manager 1220 may include DCI manager 1225, reference time slot manager 1230, available time slot identifier 1235, SRS manager 1240, configuration message manager 1245, or any combination thereof. Communication manager 1220 may be examples of various aspects of communication manager 1120 as described herein. In some examples, communication manager 1220 or its various components may be configured to use receiver 1210, transmitter 1215, or both, or otherwise cooperate with receiver 1210, transmitter 1215, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, communication manager 1220 may receive information from receiver 1210, transmit information to transmitter 1215, or be integrated with receiver 1210, transmitter 1215, or both to receive information, transmit information, or perform various other operations as described herein.

[0164] According to the examples disclosed herein, the communication manager 1220 may support wireless communication at the UE. The DCI manager 1225 may be configured or otherwise supported to support elements for receiving first downlink control information from a first transmitting and receiving point (e.g., at a first time), the first downlink control information triggering the transmission of a first probe reference signal resource set. The DCI manager 1225 may be configured or otherwise supported to support elements for receiving second downlink control information from a second transmitting and receiving point (e.g., at a second time different from the first time), the second downlink control information triggering the transmission of a second probe reference signal resource set. The reference time slot manager 1230 may be configured or otherwise supported to support elements for identifying reference time slots for the first and second probe reference signal resource sets. Available time slot identifier 1235 may be configured or otherwise supported for identifying a first available time slot for a first probe reference signal resource set and a second available time slot for a second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by a first available time slot offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by a second available time slot offset indicated in the second downlink control information. SRS manager 1240 may be configured or otherwise supported for transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0165] Alternatively or concurrently, according to the examples disclosed herein, the communication manager 1220 may support wireless communication at the UE. The configuration message manager 1245 may be configured or otherwise supported to receive configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The DCI manager 1225 may be configured or otherwise supported to receive downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. The SRS manager 1240 may be configured or otherwise supported to transmit the first probe reference signal resource set in a first available time slot, transmit the second probe reference signal resource set in a second available time slot, or both.

[0166] Figure 13 A block diagram 1300 is shown of a communication manager 1320 supporting multiple probe reference signal transmissions triggered by downlink control information, according to various aspects of this disclosure. The communication manager 1320 may be an example of a communication manager 1120, a communication manager 1220, or aspects thereof as described herein. The communication manager 1320 or its various components may be examples of units for performing various aspects of multiple probe reference signal transmissions triggered by downlink control information as described herein. For example, the communication manager 1320 may include a DCI manager 1325, a reference slot manager 1330, an available slot identifier 1335, an SRS manager 1340, a configuration message manager 1345, a timestamp manager 1350, a conflict resolution manager 1355, or any combination thereof. Each of these components may communicate with each other directly or indirectly (e.g., via one or more buses).

[0167] According to the examples disclosed herein, the communication manager 1320 may support wireless communication at the UE. The DCI manager 1325 may be configured or otherwise supported to support elements for receiving first downlink control information from a first transmitting and receiving point (e.g., at a first time), the first downlink control information triggering the transmission of a first probe reference signal resource set. In some examples, the DCI manager 1325 may be configured or otherwise supported to support elements for receiving second downlink control information from a second transmitting and receiving point (e.g., at a second time different from the first time), the second downlink control information triggering the transmission of a second probe reference signal resource set. The reference time slot manager 1330 may be configured or otherwise supported to support elements for identifying reference time slots for the first and second probe reference signal resource sets. Available time slot identifier 1335 may be configured or otherwise supported for identifying a first available time slot for a first probe reference signal resource set and a second available time slot for a second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by a first available time slot offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by a second available time slot offset indicated in the second downlink control information. SRS manager 1340 may be configured or otherwise supported for transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0168] In some examples, to support the identification of a first available time slot for the first probe reference signal resource set, the available time slot identifier 1335 may be configured or otherwise supported to identify a first available time slot for the first probe reference signal resource set from one or more candidate time slots following a processing time determined based on the timestamps received based on the first and second downlink control information. In some examples, the timestamp manager 1350 may be configured or otherwise supported to identify a timestamp as the last symbol of a control channel including the second downlink control information or the last symbol of a search space associated with a control channel including the second downlink control information.

[0169] In some examples, to support the identification of a first available time slot for a first probe reference signal resource set, the available time slot identifier 1335 may be configured or otherwise supported to identify a first available time slot for the first probe reference signal resource set from one or more candidate time slots following a timestamp determined based on the reception of first downlink control information and second downlink control information. In some examples, the timestamp manager 1350 may be configured or otherwise supported to identify a symbol whose processing time has reached one or more symbols in the candidate time slots available for the first probe reference signal resource set. In some examples, the second downlink control information is received and correctly decoded via a timestamp. In some examples, at least one of the first downlink control information or the second downlink control information is received and correctly decoded via a timestamp.

[0170] In some examples, the reference time slot manager 1330 may be configured or otherwise supported as a unit for determining a reference time slot in which second downlink control information is received. In some examples, the reference time slot manager 1330 may be configured or otherwise supported as a unit for receiving an indication of offset in the second downlink control information. In some examples, the reference time slot manager 1330 may be configured or otherwise supported as a unit for determining a reference time slot based on the offset and the time slot in which the second downlink control information is received.

[0171] Alternatively or additionally, according to the examples disclosed herein, the communication manager 1320 may support wireless communication at the UE. The configuration message manager 1345 may be configured or otherwise supported to receive configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. In some examples, the DCI manager 1325 may be configured or otherwise supported to receive downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. In some examples, the SRS manager 1340 may be configured or otherwise supported to transmit the first probe reference signal resource set in a first available time slot, transmit the second probe reference signal resource set in a second available time slot, or both.

[0172] In some examples, the available time slot identifier 1335 may be configured or otherwise supported for receiving bit fields in downlink control information indicating a first available time slot offset and a second available time slot offset. In some examples, the configuration message manager 1345 may be configured or otherwise supported for receiving in a configuration message a first list of trigger codes for triggering transmission of a first probe reference signal resource set, wherein each trigger code in the first list corresponds to an offset for the first probe reference signal resource set. In some examples, the available time slot identifier 1335 may be configured or otherwise supported for receiving trigger codes from the first list of trigger codes in downlink control information, which trigger transmission of the first probe reference signal resource set and indicate a first available time slot offset.

[0173] In some examples, the available time slot identifier 1335 may be configured or otherwise supported to receive a first bit field indicating a first available time slot offset and a second bit field indicating a second available time slot offset in the downlink control information. In some examples, the available time slot identifier 1335 may be configured or otherwise supported to determine, based on the order of the first bit field indicating a first available time slot offset and the second bit field indicating a second available time slot offset, the first bit field in the downlink control information.

[0174] In some examples, the available time slot identifier 1335 may be configured or otherwise supported for identifying a first available time slot for the first probe reference signal resource set prior to a second available time slot for the second probe reference signal resource set. In some examples, the available time slot identifier 1335 may be configured or otherwise supported for identifying a second available time slot for the second probe reference signal resource set based on the first available time slot being unavailable for the second probe reference signal resource set.

[0175] In some examples, to support the identification of a first available time slot before a second available time slot, the available time slot identifier 1335 may be configured or otherwise supported to support elements for identifying the first available time slot before a second available time slot based on the first available time slot offset being greater than the second available time slot offset. In some examples, to support the identification of a first available time slot before a second available time slot, the available time slot identifier 1335 may be configured or otherwise supported to support elements for identifying the first available time slot before a second available time slot based on the first available time slot offset being less than the second available time slot offset.

[0176] In some examples, to support the identification of a first available time slot before a second available time slot, the available time slot identifier 1335 may be configured or otherwise support elements for identifying the first available time slot before a second available time slot based on a first index of a first probe reference signal resource set and a second index of a second probe reference signal resource set. In some examples, to support the identification of a first available time slot before a second available time slot, the available time slot identifier 1335 may be configured or otherwise support elements for identifying the first available time slot before a second available time slot based on a first use of a first probe reference signal resource set and a second use of a second probe reference signal resource set. In some examples, to support the identification of a first available time slot before a second available time slot, the available time slot identifier 1335 may be configured or otherwise support elements for identifying the first available time slot before a second available time slot based on the first probe reference signal resource set being scheduled for transmission on a portion of frequency resources.

[0177] In some examples, to support the identification of a first available time slot prior to a second available time slot, the available time slot identifier 1335 may be configured or otherwise supported for identifying the first available time slot prior to a second available time slot based on a first configuration of a first probe reference signal resource set and a second configuration of a second probe reference signal resource set, wherein the first configuration and the second configuration each include the number of probe reference signal resources, transmit power, frequency hopping configuration, number of repetitions, or any combination thereof. In some examples, the first available time slot indicated for the first probe reference signal resource set and the second available time slot indicated for the second probe reference signal resource set are the same time slot.

[0178] In some examples, to support the transmission of a first probe reference signal resource set, a second probe reference signal resource set, or both, the SRS manager 1340 may be configured or otherwise support units for transmitting a first probe reference signal resource set on a first subset of symbols in the same time slot. In some examples, to support the transmission of a first probe reference signal resource set, a second probe reference signal resource set, or both, the SRS manager 1340 may be configured or otherwise support units for transmitting a second probe reference signal resource set on a second subset of symbols in the same time slot.

[0179] In some examples, to support the transmission of a first probe reference signal resource set, a second probe reference signal resource set, or both, the SRS manager 1340 may be configured or otherwise support units for transmitting either the first or second probe reference signal resource set. In some examples, the conflict resolution manager 1355 may be configured or otherwise support units for determining whether to transmit the first or second probe reference signal resource set based on a first purpose, index, or configuration of the first probe reference signal resource set and a second purpose, index, or configuration of the second probe reference signal resource set.

[0180] Figure 14 A diagram of a system 1400 including device 1405 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Device 1405 may be an example of device 1105, device 1205, or UE 115 as described herein, or include components thereof. Device 1405 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1405 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1420, an input / output (I / O) controller 1410, a transceiver 1415, an antenna 1425, a memory 1430, a code 1435, and a processor 1440. These components may be electronically communicated or otherwise coupled via one or more buses (e.g., bus 1445) or otherwise (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground).

[0181] I / O controller 1410 can manage input and output signals for device 1405. I / O controller 1410 can also manage peripheral devices not integrated into device 1405. In some cases, I / O controller 1410 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1410 can utilize, for example... MS- MS- This can be an operating system such as I / O controller 1410 or another known operating system. Alternatively, I / O controller 1410 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, I / O controller 1410 may be implemented as part of a processor (such as processor 1440). In some cases, a user may interact with device 1405 via I / O controller 1410 or via hardware components controlled by I / O controller 1410.

[0182] In some cases, device 1405 may include a single antenna 1425. However, in other cases, device 1405 may have more than one antenna 1425, which are capable of transmitting or receiving multiple wireless transmissions simultaneously. Transceiver 1415 may communicate bidirectionally via one or more antennas 1425, wired or wireless links as described herein. For example, transceiver 1415 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 1415 may also include a modem for modulating packets, providing modulated packets to one or more antennas 1425 for transmission, and demodulating packets received from one or more antennas 1425. Transceiver 1415, or transceiver 1415 and one or more antennas 1425, may be an example of transmitter 1115, transmitter 1215, receiver 1110, receiver 1210, or any combination thereof or components thereof as described herein.

[0183] Memory 1430 may include random access memory (RAM) and read-only memory (ROM). Memory 1430 may store computer-readable, computer-executable code 1435, which includes instructions that, when executed by processor 1440, cause device 1405 to perform the various functions described herein. Code 1435 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1435 may not be directly executable by processor 1440, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some additional cases, memory 1430 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0184] Processor 1440 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 1440 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1440. Processor 1440 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1430) to cause device 1405 to perform various functions (e.g., functions or tasks that support multiple probe reference signal transmissions triggered by downlink control information). For example, device 1405 or components of device 1405 may include processor 1440 and memory 1430 coupled to processor 1440, processor 1440 and memory 1430 being configured to perform the various functions described herein.

[0185] According to the examples disclosed herein, the communication manager 1420 can support wireless communication at the UE. For example, the communication manager 1420 can be configured or otherwise supported to support elements for receiving first downlink control information from a first transmitting and receiving point (e.g., at a first time), the first downlink control information triggering the transmission of a first probe reference signal resource set. The communication manager 1420 can be configured or otherwise supported to support elements for receiving second downlink control information from a second transmitting and receiving point (e.g., at a second time different from the first time), the second downlink control information triggering the transmission of a second probe reference signal resource set. The communication manager 1420 can be configured or otherwise supported to support elements for identifying reference time slots for the first and second probe reference signal resource sets. The communication manager 1420 may be configured or otherwise support elements for identifying a first available time slot for a first probe reference signal resource set and a second available time slot for a second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by an offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by an offset indicated in the second downlink control information. The communication manager 1420 may be configured or otherwise support elements for transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0186] Alternatively or additionally, according to the examples disclosed herein, the communication manager 1420 may support wireless communication at the UE. For example, the communication manager 1420 may be configured or otherwise supported to support elements for receiving configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The communication manager 1420 may be configured or otherwise supported to support elements for receiving downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. The communication manager 1420 may be configured or otherwise supported to support elements for transmitting the first probe reference signal resource set in the first available time slot, transmitting the second probe reference signal resource set in the second available time slot, or both.

[0187] By including or configuring the communication manager 1420 according to the examples described herein, the device 1405 can support techniques for more efficient utilization of communication resources. Specifically, the UE can efficiently identify resources on which it transmits SRS to the base station, and the base station can use the SRS to efficiently schedule communication with the UE. This efficient scheduling can lead to improved communication reliability, reduced latency, lower power consumption, and improved utilization of processing power.

[0188] In some examples, the communication manager 1420 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or in cooperation with transceiver 1415, one or more antennas 1425, or any combination thereof. Although the communication manager 1420 is shown as a separate component, in some examples, one or more functions described with reference to the communication manager 1420 may be supported or executed by processor 1440, memory 1430, code 1435, or any combination thereof. For example, code 1435 may include instructions executable by processor 1440 to cause device 1405 to perform various aspects of multiple probe reference signal transmissions triggered by downlink control information as described herein, or processor 1440 and memory 1430 may be otherwise configured to perform or support such operations.

[0189] Figure 15 A block diagram 1500 of an apparatus 1505 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Apparatus 1505 may be an example of various aspects of base station 105 as described herein. Apparatus 1505 may include a receiver 1510, a transmitter 1515, and a communication manager 1520. Apparatus 1505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0190] Receiver 1510 may provide a unit 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 associated with multiple probe reference signal transmissions triggered by downlink control information). Information may be passed to other components of device 1505. Receiver 1510 may utilize a single antenna or a collection of multiple antennas.

[0191] Transmitter 1515 may provide a unit for transmitting signals generated by other components of device 1505. For example, transmitter 1515 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 associated with multiple probe reference signal transmissions triggered by downlink control information). In some examples, transmitter 1515 may be co-located with receiver 1510 in a transceiver module. Transmitter 1515 may utilize a single antenna or a collection of multiple antennas.

[0192] The communication manager 1520, receiver 1510, transmitter 1515, or various combinations thereof, or various components thereof, may be examples of units for performing various aspects of the transmission of multiple probe reference signals triggered by downlink control information as described herein. For example, the communication manager 1520, receiver 1510, transmitter 1515, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0193] In some examples, the communication manager 1520, receiver 1510, transmitter 1515, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). 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 to or otherwise support units for performing the functions described herein. In some examples, a processor and memory coupled to a 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).

[0194] Alternatively or concurrently, in some examples, the communication manager 1520, receiver 1510, transmitter 1515, or various combinations or components thereof, may be implemented using code executed by a processor (e.g., as communication management software or firmware). If implemented using processor-executed code, the functionality of the communication manager 1520, receiver 1510, transmitter 1515, 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., a unit configured or otherwise supported for performing the functions described in this disclosure).

[0195] In some examples, the communication manager 1520 may be configured to use or otherwise cooperate with the receiver 1510, transmitter 1515, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 1520 may receive information from the receiver 1510, send information to the transmitter 1515, or integrate with the receiver 1510, transmitter 1515, or both to receive information, send information, or perform various other operations as described herein.

[0196] According to the examples disclosed herein, the communication manager 1520 can support wireless communication at a base station. For example, the communication manager 1520 can be configured or otherwise supported to support elements for transmitting configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The communication manager 1520 can be configured or otherwise supported to support elements for transmitting downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. The communication manager 1520 can be configured or otherwise supported to support elements for receiving the first probe reference signal resource set in the first available time slot, receiving the second probe reference signal resource set in the second available time slot, or both.

[0197] By including or configuring the communication manager 1520 according to the examples described herein, device 1505 (e.g., a processor that controls or is otherwise coupled to receiver 1510, transmitter 1515, communication manager 1520, or any combination thereof) can support techniques for more efficient utilization of communication resources. In particular, the UE can efficiently identify resources on which it transmits SRS to the base station, and the base station can use SRS to efficiently schedule communication with the UE. This efficient scheduling can lead to improved communication reliability, reduced latency, lower power consumption, and improved utilization of processing power.

[0198] Figure 16A block diagram 1600 of a device 1605 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Device 1605 may be an example of aspects of device 1505 or base station 165 as described herein. Device 1605 may include a receiver 1610, a transmitter 1615, and a communication manager 1620. Device 1605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0199] Receiver 1610 may provide a unit 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 associated with multiple probe reference signal transmissions triggered by downlink control information). Information may be passed to other components of device 1605. Receiver 1610 may utilize a single antenna or a collection of multiple antennas.

[0200] Transmitter 1615 may provide a unit for transmitting signals generated by other components of device 1605. For example, transmitter 1615 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 associated with multiple probe reference signal transmissions triggered by downlink control information). In some examples, transmitter 1615 may be co-located with receiver 1610 in a transceiver module. Transmitter 1615 may utilize a single antenna or a collection of multiple antennas.

[0201] Device 1605 or its various components may be examples of units for performing various aspects of multiple probe reference signal transmissions triggered by downlink control information as described herein. For example, communication manager 1620 may include configuring message manager 1625, DCI manager 1630, SRS manager 1635, or any combination thereof. Communication manager 1620 may be examples of various aspects of communication manager 1520 as described herein. In some examples, communication manager 1620 or its various components may be configured to use receiver 1610, transmitter 1615, or both, or otherwise cooperate with receiver 1610, transmitter 1615, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, communication manager 1620 may receive information from receiver 1610, send information to transmitter 1615, or integrate with receiver 1610, transmitter 1615, or both to receive information, send information, or perform various other operations as described herein.

[0202] According to the examples disclosed herein, the communication manager 1620 can support wireless communication at a base station. The configuration message manager 1625 can be configured or otherwise supported to support elements for sending configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The DCI manager 1630 can be configured or otherwise supported to support elements for sending downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. The SRS manager 1635 can be configured or otherwise supported to support elements for receiving the first probe reference signal resource set in the first available time slot, receiving the second probe reference signal resource set in the second available time slot, or both.

[0203] Figure 17 A block diagram 1700 is shown of a communication manager 1720 supporting multiple probe reference signal transmissions triggered by downlink control information, according to various aspects of this disclosure. The communication manager 1720 may be an example of a communication manager 1520, a communication manager 1620, or aspects thereof as described herein. The communication manager 1720 or its various components may be examples of units for performing various aspects of multiple probe reference signal transmissions triggered by downlink control information as described herein. For example, the communication manager 1720 may include a configuration message manager 1725, a DCI manager 1730, an SRS manager 1735, an available timeslot indicator 1740, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0204] According to the examples disclosed herein, the communication manager 1720 can support wireless communication at a base station. The configuration message manager 1725 can be configured or otherwise supported to support elements for sending configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The DCI manager 1730 can be configured or otherwise supported to support elements for sending downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. The SRS manager 1735 can be configured or otherwise supported to support elements for receiving the first probe reference signal resource set in a first available time slot, receiving the second probe reference signal resource set in a second available time slot, or both.

[0205] In some examples, the available time slot indicator 1740 may be configured or otherwise supported to include a unit for sending a bit field in the downlink control information indicating a first available time slot offset and a second available time slot offset. In some examples, the configuration message manager 1725 may be configured or otherwise supported to include a unit for sending in a configuration message a first list of trigger codes for triggering transmission of a first probe reference signal resource set, wherein each trigger code in the first list corresponds to an offset for the first probe reference signal resource set. In some examples, the available time slot indicator 1740 may be configured or otherwise supported to include a unit for sending in the downlink control information a trigger code from the first list of trigger codes that triggers transmission of the first probe reference signal resource set and indicates a first available time slot offset.

[0206] In some examples, the available time slot indicator 1740 may be configured or otherwise supported to include elements for transmitting a first bit field indicating a first available time slot offset and a second bit field indicating a second available time slot offset in downlink control information. In some examples, to support the transmission of the first bit field indicating the first available time slot offset and the second bit field indicating the second available time slot offset, the available time slot indicator 1740 may be configured or otherwise supported to include elements for transmitting the first bit field and the second bit field in an order such that the first bit field corresponds to a first probe reference signal resource set and the second bit field corresponds to a second probe reference signal resource set.

[0207] In some examples, the first available time slot indicated for the first probe reference signal resource set and the second available time slot indicated for the second probe reference signal resource set are the same time slot. In some examples, to support reception of the first probe reference signal resource set, the second probe reference signal resource set, or both, the SRS manager 1735 may be configured or otherwise support units for receiving the first probe reference signal resource set on a first subset of symbols in the same time slot. In some examples, to support reception of the first probe reference signal resource set, the second probe reference signal resource set, or both, the SRS manager 1735 may be configured or otherwise support units for receiving the second probe reference signal resource set on a second subset of symbols in the same time slot. In some examples, to support reception of the first probe reference signal resource set, the second probe reference signal resource set, or both, the SRS manager 1735 may be configured or otherwise support units for receiving either the first or second probe reference signal resource set.

[0208] Figure 18 A diagram of a system 1800 including device 1805 supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Device 1805 may be an example of device 1505, device 1605, or base station 105 as described herein, or may include components thereof. Device 1805 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1805 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1820, a network communication manager 1810, a transceiver 1815, an antenna 1825, a memory 1830, a code 1835, a processor 1840, and an inter-station communication manager 1845. These components may be electronically communicated or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1850).

[0209] The network communication manager 1810 can manage communication with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communication manager 1810 can manage the transmission of data communication to client devices (e.g., one or more UEs 115).

[0210] In some cases, device 1805 may include a single antenna 1825. However, in other cases, device 1805 may have more than one antenna 1825, which are capable of transmitting or receiving multiple wireless transmissions simultaneously. Transceiver 1815 may communicate bidirectionally via one or more antennas 1825, wired or wireless links as described herein. For example, transceiver 1815 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 1815 may also include a modem for modulating packets, providing modulated packets to one or more antennas 1825 for transmission, and demodulating packets received from one or more antennas 1825. Transceiver 1815, or transceiver 1815 and one or more antennas 1825, may be an example of transmitter 1515, transmitter 1615, receiver 1510, receiver 1610, or any combination thereof or components thereof as described herein.

[0211] Memory 1830 may include RAM and ROM. Memory 1830 may store computer-readable, computer-executable code 1835, which includes instructions that, when executed by processor 1840, cause device 1805 to perform the various functions described herein. Code 1835 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1835 may not be directly executable by processor 1840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some additional cases, memory 1830 may also contain a BIOS, which controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0212] Processor 1840 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 1840 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1840. Processor 1840 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1830) to cause device 1805 to perform various functions (e.g., functions or tasks that support multiple probe reference signal transmissions triggered by downlink control information). For example, device 1805 or components of device 1805 may include processor 1840 and memory 1830 coupled to processor 1840, processor 1840 and memory 1830 being configured to perform the various functions described herein.

[0213] Inter-site communication manager 1845 can manage 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 1845 can coordinate the scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, inter-site communication manager 1845 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0214] According to the examples disclosed herein, the communication manager 1820 can support wireless communication at a base station. For example, the communication manager 1820 can be configured or otherwise supported to support elements for transmitting configuration messages indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The communication manager 1820 can be configured or otherwise supported to support elements for transmitting downlink control information that triggers transmission of the first and second probe reference signal resource sets and indicates a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set. The communication manager 1820 can be configured or otherwise supported to support elements for receiving the first probe reference signal resource set in the first available time slot, receiving the second probe reference signal resource set in the second available time slot, or both.

[0215] By including or configuring the communication manager 1820 according to the examples described herein, the device 1805 can support techniques for more efficient utilization of communication resources. Specifically, the UE can efficiently identify resources on which it transmits SRS to the base station, and the base station can use the SRS to efficiently schedule communication with the UE. This efficient scheduling can lead to improved communication reliability, reduced latency, lower power consumption, and improved utilization of processing power.

[0216] In some examples, the communication manager 1820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or in cooperation with transceiver 1815, one or more antennas 1825, or any combination thereof. Although the communication manager 1820 is shown as a separate component, in some examples, one or more functions described with reference to the communication manager 1820 may be supported or executed by processor 1840, memory 1830, code 1835, or any combination thereof. For example, code 1835 may include instructions executable by processor 1840 to cause device 1805 to perform various aspects of multiple probe reference signal transmissions triggered by downlink control information as described herein, or processor 1840 and memory 1830 may be otherwise configured to perform or support such operations.

[0217] Figure 19 A flowchart illustrating a method 1900 for supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Operation of method 1900 can be implemented by a UE or its components as described herein. For example, operation of method 1900 can be implemented by, as described in reference... Figures 1 to 14 The UE 115 described is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional units of the UE to perform the described function. Alternatively, the UE can use dedicated hardware to perform aspects of the described function.

[0218] At 1905, the method may include: receiving first downlink control information from a first transmitting and receiving point (e.g., at a first time), the first downlink control information triggering the transmission of a first probe reference signal resource set. The operation at 1905 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1905 may be determined by reference to... Figure 13 The DCI manager 1325 described is used for execution.

[0219] At 1910, the method may include: receiving second downlink control information from a second transmitting and receiving point (e.g., at a second time different from the first time), the second downlink control information triggering the transmission of a second probe reference signal resource set. The operation at 1910 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1910 may be determined by reference to... Figure 13 The DCI manager 1325 described is used for execution.

[0220] At 1915, the method may include: identifying reference time slots for a first probe reference signal resource set and a second probe reference signal resource set. The operation at 1915 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1915 may be determined by reference to... Figure 13The description refers to the time slot manager 1330 for execution.

[0221] At 1920, the method may include: identifying a first available timeslot for a first probe reference signal resource set and a second available timeslot for a second probe reference signal resource set, wherein the first available timeslot is offset from the reference timeslot by a first offset indicated in the first downlink control information (e.g., a first available timeslot offset), and the second available timeslot is offset from the reference timeslot by a second offset indicated in the second downlink control information (e.g., a second available timeslot offset). The operation at 1920 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1920 may be determined by reference to... Figure 13 The described time slot identifier 1335 can be used to perform this.

[0222] At 1925, the method may include: transmitting a first probe reference signal resource set in a first available time slot and transmitting a second probe reference signal resource set in a second available time slot. The operation at 1925 can be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1925 may be determined by reference to... Figure 13 The SRS manager 1340 described is used to execute this.

[0223] Figure 20 A flowchart illustrating a method 2000 for supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Operation of method 2000 can be implemented by a UE or its components as described herein. For example, operation of method 2000 can be implemented by, as described in reference... Figures 1 to 14 The UE 115 described is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional units of the UE to perform the described function. Alternatively, the UE can use dedicated hardware to perform aspects of the described function.

[0224] At 2005, the method may include: receiving a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The operation of 2005 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2005 may be determined by reference to... Figure 13 The configuration message manager 1345 described is used for execution.

[0225] At 2010, the method may include: receiving downlink control information that triggers transmission of a first probe reference signal resource set and a second probe reference signal resource set, and indicating a first timeslot offset (e.g., a first available timeslot offset) from a first offset list corresponding to a first available timeslot for the first probe reference signal resource set and a second timeslot offset (e.g., a second available timeslot offset) from a second offset list corresponding to a second available timeslot for the second probe reference signal resource set. Operation 2010 can be performed according to examples as disclosed herein. In some examples, aspects of operation 2010 may be determined by reference to... Figure 13 The DCI manager 1325 described is used for execution.

[0226] At 2015, the method may include: transmitting a first set of probe reference signals in a first available time slot, transmitting a second set of probe reference signals in a second available time slot, or both. The operation of 2015 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2015 may be determined by reference to... Figure 13 The SRS manager 1340 described is used to execute this.

[0227] Figure 21 A flowchart illustrating a method 2100 for supporting the transmission of multiple probe reference signals triggered by downlink control information, according to various aspects of this disclosure, is shown. Operation of method 2100 can be implemented by a base station or its components as described herein. For example, operation of method 2100 can be implemented by... Figures 1 to 10 The base station 105 described in sections 15 to 18 performs this function. In some examples, the base station may execute a set of instructions to control the functional units of the base station to perform the described functions. Alternatively, the base station may use dedicated hardware to perform aspects of the described functions.

[0228] At 2105, the method may include: sending a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set. The operation of 2105 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2105 may be determined by reference to... Figure 17 The configuration message manager 1725 described is used for execution.

[0229] At 2110, the method may include: sending downlink control information that triggers transmission of a first probe reference signal resource set and a second probe reference signal resource set, and indicating a first timeslot offset (e.g., a first available timeslot offset) from a first offset list corresponding to a first available timeslot for the first probe reference signal resource set and a second timeslot offset (e.g., a second available timeslot offset) from a second offset list corresponding to a second available timeslot for the second probe reference signal resource set. The operation of 2110 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2110 may be provided by reference to... Figure 17 The DCI Manager 1730 described is used for execution.

[0230] At 2115, the method may include: receiving a first set of probe reference signals in a first available time slot, receiving a second set of probe reference signals in a second available time slot, or both. The operation of 2115 can be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2115 may be provided by reference to... Figure 17 The SRS Manager 1735 described is used for execution.

[0231] The following provides a summary of various aspects of this disclosure:

[0232] Aspect 1: A method for wireless communication at a UE, comprising: receiving first downlink control information from a first transmitting and receiving point, the first downlink control information triggering the transmission of a first probe reference signal resource set; receiving second downlink control information from a second transmitting and receiving point, the second downlink control information triggering the transmission of a second probe reference signal resource set; identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identifying a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set, wherein the first available time slot is offset from the reference time slot by a first available time slot offset indicated in the first downlink control information, and the second available time slot is offset from the reference time slot by a second available time slot offset indicated in the second downlink control information; and transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0233] Aspect 2: According to the method of aspect 1, wherein identifying the first available time slot for the first probe reference signal resource set comprises: identifying the first available time slot for the first probe reference signal resource set from one or more candidate time slots following a processing time after at least partly based on a timestamp determined by receiving the first downlink control information and the second downlink control information.

[0234] Aspect 3: The method according to aspect 2 further includes: identifying the timestamp as the last symbol of a control channel including the second downlink control information or the last symbol of a search space associated with the control channel including the second downlink control information.

[0235] Aspect 4: The method according to any one of Aspects 1 to 3, wherein identifying the first available time slot for the first probe reference signal resource set comprises: identifying the first available time slot for the first probe reference signal resource set from one or more candidate time slots following a timestamp determined at least in part based on receiving the first downlink control information and the second downlink control information.

[0236] Aspect 5: The method according to aspect 4 further includes: identifying the timestamp as a symbol that has reached a processing time before one or more symbols in the candidate time slots available for the first probe reference signal resource set.

[0237] Aspect 6: According to the method of aspect 5, the second downlink control information is received and correctly decoded by the timestamp.

[0238] Aspect 7: The method according to any one of Aspects 5 to 6, wherein at least one of the first downlink control information or the second downlink control information is received and correctly decoded by the timestamp.

[0239] Aspect 8: The method according to any one of aspects 1 to 7 further includes: determining the reference time slot as the time slot in which the second downlink control information is received.

[0240] Aspect 9: The method according to any one of Aspects 1 to 8 further includes: receiving an indication of offset in the second downlink control information; and determining the reference time slot based at least in part on the offset and the time slot in which the second downlink control information is received.

[0241] Aspect 10: A method for wireless communication at a UE, comprising: receiving a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set; receiving downlink control information triggering transmission of the first probe reference signal resource set and the second probe reference signal resource set, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set; and transmitting the first probe reference signal resource set in the first available time slot, transmitting the second probe reference signal resource set in the second available time slot, or both.

[0242] Aspect 11: The method according to aspect 10 further includes: receiving a bit field in the downlink control information indicating the first available time slot offset and the second available time slot offset.

[0243] Aspect 12: The method according to any one of Aspects 10 to 11 further includes: receiving in the configuration message a first list of trigger codes for triggering transmission of the first probe reference signal resource set, wherein each trigger code in the first list corresponds to an offset for the first probe reference signal resource set; and receiving in the downlink control information a trigger code from the first list of trigger codes, the trigger code triggering transmission of the first probe reference signal resource set and indicating the first available time slot offset.

[0244] Aspect 13: The method according to any one of aspects 10 to 12 further includes: receiving a first bit field indicating the offset of the first available time slot and a second bit field indicating the offset of the second available time slot in the downlink control information.

[0245] Aspect 14: The method according to aspect 13 further includes: determining, at least in part, based on the order of the first bit field and the second bit field in the downlink control information, that the first bit field indicates the first available time slot offset and the second bit field indicates the second available time slot offset.

[0246] Aspect 15: The method according to any one of aspects 10 to 14 further includes: identifying the first available time slot for the first probe reference signal resource set before the second available time slot for the second probe reference signal resource set; and identifying the second available time slot for the second probe reference signal resource set based at least in part on the fact that the first available time slot is not available for the second probe reference signal resource set.

[0247] Aspect 16: According to the method of aspect 15, identifying the first available time slot before the second available time slot includes: identifying the first available time slot before the second available time slot based at least in part on the fact that the offset of the first available time slot is greater than the offset of the second available time slot.

[0248] Aspect 17: The method according to any one of Aspects 15 to 16, wherein identifying the first available time slot before the second available time slot comprises: identifying the first available time slot before the second available time slot based at least in part on the fact that the offset of the first available time slot is less than the offset of the second available time slot.

[0249] Aspect 18: The method according to any one of Aspects 15 to 17, wherein identifying the first available time slot prior to the second available time slot comprises: identifying the first available time slot prior to the second available time slot based at least in part on a first index of the first probe reference signal resource set and a second index of the second probe reference signal resource set.

[0250] Aspect 19: The method according to any one of Aspects 15 to 18, wherein identifying the first available time slot prior to the second available time slot comprises: identifying the first available time slot prior to the second available time slot based at least in part on a first use of the first probe reference signal resource set and a second use of the second probe reference signal resource set.

[0251] Aspect 20: The method according to any one of aspects 15 to 19, wherein identifying the first available time slot prior to the second available time slot comprises: identifying the first available time slot prior to the second available time slot based at least in part on the fact that the first probe reference signal resource set is scheduled for transmission on a portion of the frequency resources.

[0252] Aspect 21: The method according to any one of Aspects 15 to 20, wherein identifying the first available time slot prior to the second available time slot comprises: identifying the first available time slot prior to the second available time slot based at least in part on a first configuration of the first probe reference signal resource set and a second configuration of the second probe reference signal resource set, wherein the first configuration and the second configuration each include a number of probe reference signal resources, transmit power, frequency hopping configuration, number of repetitions, or any combination thereof.

[0253] Aspect 21: The method according to any one of Aspects 15 to 21, wherein identifying the first available time slot before the second available time slot comprises: identifying the first available time slot before the second available time slot based at least in part on the following: the first available time slot offset is different from the second available time slot offset, a first index of the first probe reference signal resource set, a second index of the second probe reference signal resource set, the first probe reference signal resource set being scheduled for transmission on a portion of frequency resources, a first configuration of the first probe reference signal resource set, a second configuration of the second probe reference signal resource set, or any combination thereof, wherein the first configuration and the second configuration each include a number of probe reference signal resources, transmit power, frequency hopping configuration, number of repetitions, or any combination thereof.

[0254] Aspect 23: The method according to any one of aspects 10 to 22, wherein the first available time slot indicated for the first probe reference signal resource set and the second available time slot indicated for the second probe reference signal resource set are the same time slot.

[0255] Aspect 24: According to the method of aspect 23, transmitting the first probe reference signal resource set, the second probe reference signal resource set, or both comprises: transmitting the first probe reference signal resource set on a first symbol subset in the same time slot; and transmitting the second probe reference signal resource set on a second symbol subset in the same time slot.

[0256] Aspect 25: The method according to any one of Aspects 23 to 24, wherein transmitting the first detection reference signal resource set, the second detection reference signal resource set, or both comprises: transmitting the first detection reference signal resource set or the second detection reference signal resource set.

[0257] Aspect 26: The method according to aspect 25 further includes: determining whether to transmit the first probe reference signal resource set or the second probe reference signal resource set based at least in part on a first use, index, or configuration of the first probe reference signal resource set and a second use, index, or configuration of the second probe reference signal resource set.

[0258] Aspect 27: A method for wireless communication at a base station, comprising: sending a configuration message indicating a first offset list for a first probe reference signal resource set and a second offset list for a second probe reference signal resource set; sending downlink control information that triggers transmission of the first probe reference signal resource set and the second probe reference signal resource set, and indicating a first available time slot offset from the first offset list corresponding to a first available time slot for the first probe reference signal resource set and a second available time slot offset from the second offset list corresponding to a second available time slot for the second probe reference signal resource set; and receiving the first probe reference signal resource set in the first available time slot, receiving the second probe reference signal resource set in the second available time slot, or both.

[0259] Aspect 28: The method according to aspect 27 further includes: sending a bit field indicating the first available time slot offset and the second available time slot offset in the downlink control information.

[0260] Aspect 29: The method according to any one of Aspects 27 to 28 further includes: sending in the configuration message a first list of trigger codes for triggering transmission of the first probe reference signal resource set, wherein each trigger code in the first list corresponds to an offset for the first probe reference signal resource set; and sending in the downlink control information a trigger code from the first list of trigger codes, the trigger code triggering transmission of the first probe reference signal resource set and indicating the first available time slot offset.

[0261] Aspect 30: The method according to any one of aspects 27 to 29 further includes: transmitting a first bit field indicating the offset of the first available time slot and a second bit field indicating the offset of the second available time slot in the downlink control information.

[0262] Aspect 31: According to the method of aspect 30, transmitting the first bit field indicating the offset of the first available time slot and the second bit field indicating the offset of the second available time slot comprises: transmitting the first bit field and the second bit field in an order such that the first bit field corresponds to the first probe reference signal resource set and the second bit field corresponds to the second probe reference signal resource set.

[0263] Aspect 32: The method according to any one of Aspects 27 to 31, wherein the first available time slot indicated for the first probe reference signal resource set and the second available time slot indicated for the second probe reference signal resource set are the same time slot.

[0264] Aspect 33: According to the method of aspect 32, receiving the first probe reference signal resource set, the second probe reference signal resource set, or both includes: receiving the first probe reference signal resource set on a first symbol subset in the same time slot; and receiving the second probe reference signal resource set on a second symbol subset in the same time slot.

[0265] Aspect 34: The method according to any one of aspects 32 to 33, wherein receiving the first detection reference signal resource set, the second detection reference signal resource set, or both comprises: receiving the first detection reference signal resource set or the second detection reference signal resource set.

[0266] Aspect 35: A method for wireless communication at a UE, comprising: receiving first downlink control information from a first transmitting and receiving point at a first time, the first downlink control information triggering the transmission of a first probe reference signal resource set; receiving second downlink control information from a second transmitting and receiving point at a second time, the second downlink control information triggering the transmission of a second probe reference signal resource set, wherein the first time occurs before the second time; identifying reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; identifying a timestamp as the last symbol of a control channel including the second downlink control information or the last symbol of a search space associated with the control channel including the second downlink control information; identifying each of a first available time slot for the first probe reference signal resource set and a second available time slot for the second probe reference signal resource set based at least in part on a processing time after the timestamp, wherein the first available time slot is offset from the reference time slot by a first available time slot offset, and the second reference time slot is offset from the available time slot by a second available time slot offset; and transmitting the first probe reference signal resource set in the first available time slot and transmitting the second probe reference signal resource set in the second available time slot.

[0267] Aspect 36: According to the method of aspect 35, identifying the first available time slot for the first probe reference signal resource set includes: identifying the first available time slot for the first probe reference signal resource set from one or more candidate time slots, wherein the timestamp is determined at least in part based on receiving the first downlink control information and the second downlink control information.

[0268] Aspect 37: The method according to any one of aspects 35 to 36 further includes: determining the reference time slot as the time slot in which the second downlink control information is received.

[0269] Aspect 38: The method according to any one of aspects 35 to 37 further includes: receiving an indication of offset in the second downlink control information; and determining the reference time slot based at least in part on the offset and the time slot in which the second downlink control information is received.

[0270] Aspect 39: An apparatus for wireless communication at a UE, 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 according to any one of aspects 1 to 9.

[0271] Aspect 40: An apparatus for wireless communication at a UE, comprising at least one unit for performing the method according to any one of aspects 1 to 9.

[0272] Aspect 41: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 1 to 9.

[0273] Aspect 42: An apparatus for wireless communication at a UE, 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 according to any one of aspects 10 to 26.

[0274] Aspect 43: An apparatus for wireless communication at a UE, comprising at least one unit for performing the method according to any one of aspects 10 to 26.

[0275] Aspect 44: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 10 to 26.

[0276] Aspect 45: 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 according to any one of aspects 27 to 34.

[0277] Aspect 46: An apparatus for wireless communication at a base station, comprising at least one unit for performing the method according to any one of aspects 27 to 34.

[0278] Aspect 47: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code including instructions executable by a processor to perform a method according to any one of aspects 27 to 34.

[0279] Aspect 48: 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 according to any one of aspects 35 to 38.

[0280] Aspect 49: An apparatus for wireless communication at a base station, comprising at least one unit for performing the method according to any one of aspects 35 to 38.

[0281] Aspect 50: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform a method according to any one of aspects 35 to 38.

[0282] 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 possible. Furthermore, aspects from two or more methods can be combined.

[0283] 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 extensively in the description, the techniques described herein apply beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described 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.

[0284] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, the data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0285] The various illustrative blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but alternatively, 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 combined with a DSP core, or any other such configuration).

[0286] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions can be stored as one or more instructions or code on or transmitted through a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the functions are implemented in different physical locations.

[0287] Computer-readable media includes both non-transitory computer storage media and communication media, with communication media encompassing any medium that facilitates the transfer of computer programs from one place to another. Non-transitory storage media can be any available medium accessible by a general-purpose computer or a special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired units of program code in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately 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 coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs, wherein disks typically copy data magnetically, while optical discs use lasers to copy data optically. The combinations described above are also included within the scope of computer-readable media.

[0288] As used herein (including in the claims), the word "or" in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such that a list of at least one of 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). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could 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 way as the phrase "at least partially based on".

[0289] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by a dash and a second reference numeral following the reference numeral, used to differentiate between similar components. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral, without regard to the second reference numeral or other subsequent reference numerals.

[0290] This document describes exemplary configurations in conjunction with the accompanying drawings, and does not represent all examples that can be implemented or that are within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," and not "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0291] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is to be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: At the first time point, first downlink control information is received from the first transmitting and receiving point, and the first downlink control information triggers the transmission of the first probe reference signal resource set; Second downlink control information is received from a second transmitting and receiving point at a second time point, and the second downlink control information triggers the transmission of a second probe reference signal resource set, wherein the first time point occurs before the second time point; Identify reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; The timestamp is identified as the last symbol of the control channel that includes the second downlink control information or the last symbol of the search space associated with the control channel that includes the second downlink control information; Each of the first available time slot for the first probe reference signal resource set and the second available time slot for the second probe reference signal resource set is identified at least in part based on the processing time following the timestamp, wherein the first available time slot is offset from the reference time slot by a first available time slot offset, and the second available time slot is offset from the reference time slot by a second available time slot offset; and The first probe reference signal resource set is transmitted in the first available time slot, and the second probe reference signal resource set is transmitted in the second available time slot.

2. The method according to claim 1, further comprising: The reference time slot is determined as the time slot in which the second downlink control information is received.

3. The method according to claim 1, further comprising: Receive an indication of the offset in the second downlink control information; as well as The reference time slot is determined at least in part based on the offset and the time slot in which the second downlink control information is received.

4. The method according to claim 1, wherein, The first downlink control information and the second downlink control information include the same payload.

5. The method according to claim 1, wherein, The first downlink control information and the second downlink control information include the first available timeslot offset and the second available timeslot offset.

6. An apparatus for wireless communication at a user equipment (UE), comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, cause the device to perform the following operations: At the first time point, first downlink control information is received from the first transmitting and receiving point, and the first downlink control information triggers the transmission of the first probe reference signal resource set; Second downlink control information is received from a second transmitting and receiving point at a second time point, and the second downlink control information triggers the transmission of a second probe reference signal resource set, wherein the first time point occurs before the second time point; Identify reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; The timestamp is identified as the last symbol of the control channel that includes the second downlink control information or the last symbol of the search space associated with the control channel that includes the second downlink control information; Each of the first available time slot for the first probe reference signal resource set and the second available time slot for the second probe reference signal resource set is identified at least in part based on the processing time following the timestamp, wherein the first available time slot is offset from the reference time slot by a first available time slot offset, and the second available time slot is offset from the reference time slot by a second available time slot offset; and The first probe reference signal resource set is transmitted in the first available time slot, and the second probe reference signal resource set is transmitted in the second available time slot.

7. The apparatus according to claim 6, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: The reference time slot is determined as the time slot in which the second downlink control information is received.

8. The apparatus according to claim 6, wherein, The instructions can also be executed by the processor to cause the device to perform the following operations: Receive an indication of offset in the second downlink control information; and The reference time slot is determined at least in part based on the offset and the time slot in which the second downlink control information is received.

9. The apparatus according to claim 6, wherein, The first downlink control information and the second downlink control information include the same payload.

10. The apparatus according to claim 6, wherein, The first downlink control information and the second downlink control information include the first available timeslot offset and the second available timeslot offset.

11. A computer-readable medium including processor-executable instructions that, when executed by a processor of a user equipment (UE), cause the UE to perform the following operations: At the first time point, first downlink control information is received from the first transmitting and receiving point, and the first downlink control information triggers the transmission of the first probe reference signal resource set; At a second time point, second downlink control information is received from a second transmitting and receiving point. This second downlink control information triggers the transmission of a second probe reference signal resource set. The first time occurred before the second time; Identify reference time slots for the first probe reference signal resource set and the second probe reference signal resource set; The timestamp is identified as the last symbol of the control channel that includes the second downlink control information or the last symbol of the search space associated with the control channel that includes the second downlink control information; Each of the first available time slot for the first probe reference signal resource set and the second available time slot for the second probe reference signal resource set is identified at least in part based on the processing time after the timestamp, wherein the first available time slot is offset from the reference time slot by a first available time slot offset, and the second available time slot is offset from the reference time slot by a second available time slot offset; as well as The first probe reference signal resource set is transmitted in the first available time slot, and the second probe reference signal resource set is transmitted in the second available time slot.

12. The computer-readable medium of claim 11, wherein, The processor-executable instructions can also be executed by the processor to cause the UE to perform the following operations: The reference time slot is determined as the time slot in which the second downlink control information is received.

13. The computer-readable medium of claim 11, wherein, The processor-executable instructions can also be executed by the processor to cause the UE to perform the following operations: Receive an indication of offset in the second downlink control information; and The reference time slot is determined at least in part based on the offset and the time slot in which the second downlink control information is received.

14. The computer-readable medium of claim 11, wherein, The first downlink control information and the second downlink control information include the same payload.

15. The computer-readable medium of claim 11, wherein, The first downlink control information and the second downlink control information include the first available timeslot offset and the second available timeslot offset.

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