Iterative validation of resources associated with linked downlink control channel candidates

Abstract

To provide improved methods and apparatus for supporting resource verification. [Solution] A method to provide that a user equipment (UE) 115-a receives an instruction from a base station 105-a that first and second downlink control channel candidates are linked for iteration, wherein the UE decodes downlink control information (DCI) from one or both candidates. The DCI schedules a shared channel resource to the same transmission time interval as at least one of the candidates. The DCI includes a channel state information request associated with a reference signal resource that is located to the same transmission time interval as one or both candidates. The UE applies rules to determine that the downlink shared channel resource or reference signal resource and the downlink control channel candidates are effectively located and communicates (e.g., receiving a downlink message or sending a report) based on the application of the rules.

Description

Technical Field

[0001] Cross-reference This patent application claims the benefit of U.S. Provisional Patent Application No. 63 / 162,473, filed Mar. 17, 2021, by Khoshnevisan et al., titled "VERIFYING RESOURCES ASSOCIATED WITH REPETITION-BASED LINKED DOWNLINK CONTROL CHANNEL CANDIDATES", assigned to the assignee of this application, and claims the priority of U.S. Patent Application No. 17 / 574,289, filed Jan. 12, 2022, by Khoshnevisan et al., titled "VERIFYING RESOURCES ASSOCIATED WITH REPETITION-BASED LINKED DOWNLINK CONTROL CHANNEL CANDIDATES".

[0002] The following relates to wireless communication and includes verifying resources associated with repetition-based linked downlink control channel candidates.

Background Art

[0003] Wireless communication systems are widely deployed to provide various types of communication content, including voice, video, packet data, messaging, and broadcast. These systems may support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), or LTE-A Pro systems, and fifth-generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may, in some cases, include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, sometimes known as user equipment (UEs).

[0004] The various channels and signal resources that a UE should use for communication in a wireless communication system may be allocated by the base station. Due to processing complexity, interference, and other considerations, the location of such resources relative to other resources can affect the reliability and efficiency of communication. [Overview of the project] [Means for solving the problem]

[0005] The techniques described relate to improved methods, systems, devices, and apparatus for supporting iterative verification of resources associated with linked downlink control channel candidates. Generally, the techniques described provide a user equipment (UE) receiving instructions from a base station that first and second downlink control channel candidates are linked. The first downlink control channel candidate may be received at least partially before the second downlink control channel candidate. The UE may decode downlink control information (DCI) from one or both candidates. The DCI may schedule downlink shared channel resources to the same transmission time interval as at least one of the candidates, or the DCI may include channel status information requests associated with reference signal resources that are placed to the same transmission time interval as one or both candidates. The UE may apply confirmation rules to determine that the downlink shared channel resources and downlink control channel candidates are effectively located, or to determine that the reference signal resources and downlink control channel candidates are effectively located. Based on the confirmation rules being met, the UE may communicate (e.g., receive a downlink message or send a channel status information report).

[0006] A method for wireless communication in a user device (UE) is described. The method may include the steps of: receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; decoding downlink control information from at least one of the first or second downlink control channel candidates, and the downlink control information schedules a resource for a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate; and receiving a downlink message on the resource based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, the confirmation rule being that at least one of the first or second downlink control channel candidates is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0007] This document describes a device for wireless communication in a UE (Unified Environment). The device may include a processor, memory coupled to the processor, and instructions stored in the memory. The instruction may be executable by the processor to cause the device to receive an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, receive that the first downlink control channel candidate is at least partially received before the second downlink control channel candidate, decode downlink control information from at least one of the first or second downlink control channel candidates, decode that the downlink control information schedules a resource for a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate, and receive a downlink message on the resource based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, the confirmation rule being that at least one of the first or second downlink control channel candidates is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0008] Another device for wireless communication in a UE is described. The device may include means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and that the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; means for decoding downlink control information from at least one of the first or second downlink control channel candidates, and that the downlink control information schedules a resource for a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate; and means for receiving a downlink message in a resource based on the fact that an acknowledgment rule associated with the linking of the first and second downlink control channel candidates is satisfied, the acknowledgment rule being that at least one of the first or second downlink control channel candidates is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0009] A non-temporary, computer-readable medium for storing codes for wireless communication in a UE is described. The code includes instructions executable by the processor to receive a signal from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and to decode downlink control information from at least one of the first or second downlink control channel candidates, which is at least partially received before the second downlink control channel candidate, and to receive a downlink message on the resource based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, which may include instructions executable by the processor to receive that at least one of the first or second downlink control channel candidates is within a threshold number of symbols at the start of the transmission interval in which the resource is scheduled.

[0010] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, the transmission time interval may be a second transmission time interval, and the methods, apparatus, and non-temporary computer-readable media may include further operations, features, means, or instructions for determining that a first downlink control channel candidate may be located within a first transmission time interval preceding a second transmission time interval containing the second downlink control channel candidate and resources, and verifying that a confirmation rule can be satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission time interval, based on the determination that the first downlink control channel candidate may be located within the first transmission time interval.

[0011] Some examples of methods, apparatus, and non-temporary computer-readable media described herein further involve determining that both a first downlink control channel candidate and a second downlink control channel candidate can be located within a transmission time interval in which resources can be scheduled, and the confirmation rule may include actions, features, means, or instructions for making such determinations, which may be applicable based on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0012] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, verification may include operations, features, means, or instructions for verifying that a confirmation rule can be satisfied by both the first and second downlink control channel candidates being located within a threshold number of symbols of a transmission time interval, based on the determination that both the first and second downlink control channel candidates can be located within a transmission time interval.

[0013] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, verification may include an operation, feature, means, or instruction for verifying that a confirmation rule can be satisfied by at least one of the first and second downlink control channel candidates being located within a threshold number of symbols of the transmission time interval, based on the determination that both the first and second downlink control channel candidates can be located within a transmission time interval.

[0014] Some examples of methods, apparatus, and non-temporary computer-readable media described herein further involve downlink control information deciding to schedule resources on a downlink shared channel using a type A resource mapping, and confirmation rules may include actions, features, means, or instructions for making such decisions, which may be applicable based on the downlink control information scheduling resources using a type A resource mapping.

[0015] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, receiving an instruction may include an operation, feature, means, or instruction to receive an instruction via a radio resource control message that a first search space set and a second search space set may be linked, and that a first downlink control channel candidate and a second downlink control channel candidate may be linked on the basis that the first search space set and the second search space set are linked.

[0016] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, the threshold symbol count may be 3.

[0017] A method for wireless communication in a UE is described. The method may include the steps of: receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, wherein the downlink control information includes a channel state information request; and transmitting a channel state information report to the base station based on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is satisfied, wherein the confirmation rule is that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0018] The present invention describes an apparatus for wireless communication in a UE. The apparatus may include a processor, memory coupled to the processor, and instructions stored in the memory. The instructions may be operable by the processor to cause the apparatus to receive an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, that the first downlink control channel candidate is received at least partially before the second downlink control channel candidate, receive downlink control information from at least one of the first or second downlink control channel candidates, decode downlink control information including a channel state information request, decode downlink control information including a channel state information request, and transmit a channel state information report to the base station based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, the confirmation rule being that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0019] Another device for wireless communication in a UE is described. The device is a means for receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the downlink control information includes a channel state information request; and a means for transmitting a channel state information report to the base station based on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is satisfied, the confirmation rule may include a means for transmitting that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0020] The present invention describes a non-temporary computer-readable medium for storing code for wireless communication in a UE. The code may include instructions executable by a processor to receive an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, that the first downlink control channel candidate is received at least partially before the second downlink control channel candidate, decode downlink control information from at least one of the first or second downlink control channel candidates, that the downlink control information includes a channel state information request, and transmit a channel state information report to the base station based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is satisfied, the confirmation rule being that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0021] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, a confirmation rule can be satisfied by verifying that a reference signal resource is located after the start symbol of the second downlink control channel candidate, based on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked.

[0022] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, a confirmation rule can be satisfied by verifying that a reference signal resource is placed only after the start symbol of the first downlink control channel candidate, based on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked and the first downlink control channel candidate was received before the second downlink control channel candidate.

[0023] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, receiving an instruction may include an operation, feature, means, or instruction to receive an instruction via a radio resource control message that a first search space set and a second search space set may be linked, and that a first downlink control channel candidate and a second downlink control channel candidate may be linked on the basis that the first search space set and the second search space set are linked.

[0024] Some examples of methods, apparatus, and non-temporary computer-readable media described herein may further include operations, features, means, or instructions for determining a reference signal resource based on a channel state information request contained in downlink control information.

[0025] A method for wireless communication at a base station is described. The method may include the steps of: sending an instruction to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, which the first downlink control channel candidate sends at least partially before the second downlink control channel candidate; sending downlink control information to the UE via the first and second downlink control channel candidates to schedule a resource on a downlink shared channel for a transmission time interval including at least the second downlink control channel candidate; and sending a downlink message on a resource based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, which confirmation rule is that at least one of the first or second downlink control channel candidates is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0026] An apparatus for wireless communication in a base station will be described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions cause the apparatus to transmit to a UE an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted at least partially before the second downlink control channel candidate, transmit downlink control information scheduling resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate to the UE via the first downlink control channel candidate and the second downlink control channel candidate, and transmit a downlink message in the resources based on that a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked is satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resources are scheduled, and may be executable by the processor to cause the above to be performed.

[0027] Another apparatus for wireless communication in a base station will be described. The apparatus is means for transmitting an indication to a UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, means for transmitting, wherein the first downlink control channel candidate is transmitted at least partially before the second downlink control channel candidate, downlink control information for scheduling resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate, to the UE via the first downlink control channel candidate and the second downlink control channel candidate, and means for transmitting a downlink message in the resources based on that a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked is satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resources are scheduled, and may include means for transmitting.

[0028] A non-temporary computer-readable medium for storing code for wireless communication at a base station is described. The code includes sending an instruction to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set; sending downlink control information to the UE via the first and second downlink control channel candidates, at least partially before the second downlink control channel candidate is sent; scheduling downlink control information for a resource on a downlink shared channel for at least a transmission time interval including the second downlink control channel candidate; and sending a downlink message on the resource based on the satisfaction of a confirmation rule associated with the linking of the first and second downlink control channel candidates, the confirmation rule may include instructions executable by a processor to send that at least one of the first or second downlink control channel candidates is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0029] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, the transmission time interval may be a second transmission time interval, and the methods, apparatus, and non-temporary computer-readable media may include further operations, features, means, or instructions for determining that a first downlink control channel candidate may be located within a first transmission time interval preceding a second transmission time interval containing the second downlink control channel candidate and resources, and verifying that a confirmation rule can be satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission time interval, based on the determination that the first downlink control channel candidate may be located within the first transmission time interval.

[0030] Some examples of methods, apparatus, and non-temporary computer-readable media described herein further involve determining that both a first downlink control channel candidate and a second downlink control channel candidate can be located within a transmission time interval in which resources can be scheduled, and the confirmation rule may include actions, features, means, or instructions for making such determinations, which may be applicable based on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0031] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, verification may include operations, features, means, or instructions for verifying that a confirmation rule can be satisfied by both the first and second downlink control channel candidates being located within a threshold number of symbols of a transmission time interval, based on the determination that both the first and second downlink control channel candidates can be located within a transmission time interval.

[0032] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, verification may include an operation, feature, means, or instruction for verifying that a confirmation rule can be satisfied by at least one of the first and second downlink control channel candidates being located within a threshold number of symbols of the transmission time interval, based on the determination that both the first and second downlink control channel candidates can be located within a transmission time interval.

[0033] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, transmitting downlink control information means transmitting downlink control information that schedules resources on a downlink shared channel using a type A resource mapping, and confirmation rules may include operations, features, means, or instructions for transmission that are applicable based on the downlink control information scheduling resources using a type A resource mapping.

[0034] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, transmitting an instruction may include an operation, feature, means, or command to transmit an instruction via a radio resource control message that a first search space set and a second search space set may be linked, and that a first downlink control channel candidate and a second downlink control channel candidate may be linked on the basis that the first search space set and the second search space set are linked.

[0035] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, the threshold symbol count may be 3.

[0036] A method for wireless communication at a base station is described. The method may include the steps of: transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, which the first downlink control channel candidate transmits at least partially before the second downlink control channel candidate; transmitting downlink control information, including a channel status information request, to the UE via the first and second downlink control channel candidates; and receiving a channel status information report from the UE based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, which the confirmation rule is that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate.

[0037] The present invention describes an apparatus for wireless communication at a base station. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. An instruction may be executable by the processor to cause the apparatus to transmit to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, which the first downlink control channel candidate transmits, at least partially, before the second downlink control channel candidate; transmit downlink control information, including a channel state information request, to the UE via the first and second downlink control channel candidates; and receive a channel state information report from the UE based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, which is a confirmation rule that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0038] Another device for wireless communication at a base station is described. The device includes means for transmitting an instruction to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted at least partially before the second downlink control channel candidate; means for transmitting downlink control information, including a channel state information request, to the UE via the first and second downlink control channel candidates; and means for receiving a channel state information report from the UE based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is satisfied, the confirmation rule being that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0039] A non-temporary computer-readable medium for storing code for wireless communication at a base station is described. The code includes instructions that can be executed by a processor to transmit to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, that the first downlink control channel candidate transmits, at least partially, before the second downlink control channel candidate, and transmits downlink control information, including a channel state information request, to the UE via the first and second downlink control channel candidates, and receive a channel state information report from the UE based on the fact that a confirmation rule associated with the linking of the first and second downlink control channel candidates is met, the confirmation rule being that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0040] Some examples of methods, apparatus, and non-temporary computer-readable media described herein may further include operations, features, means, or instructions for verifying that a confirmation rule can be satisfied by a reference signal resource being positioned after the start symbol of the second downlink control channel candidate, based on the linking of a first downlink control channel candidate and a second downlink control channel candidate.

[0041] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, a confirmation rule can be satisfied by verifying that a reference signal resource is placed only after the start symbol of the first downlink control channel candidate, based on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked and the first downlink control channel candidate was transmitted before the second downlink control channel candidate.

[0042] In some examples of the methods, apparatus, and non-temporary computer-readable media described herein, transmitting an instruction may include an operation, feature, means, or command to transmit an instruction via a radio resource control message that a first search space set and a second search space set may be linked, and that a first downlink control channel candidate and a second downlink control channel candidate may be linked on the basis that the first search space set and the second search space set are linked.

[0043] Some examples of methods, apparatus, and non-temporary computer-readable media described herein may further include operations, features, means, or instructions for indicating a reference signal resource based on a channel state information request contained in downlink control information. [Brief explanation of the drawing]

[0044] [Figure 1] This figure shows an example of a wireless communication system that supports iterative verification of resources associated with linked downlink control channel candidates, according to aspects of the present disclosure. [Figure 2] This figure shows an example of a wireless communication system that supports iterative verification of resources associated with linked downlink control channel candidates, according to aspects of the present disclosure. [Figure 3A] This figure shows an example of a resource diagram illustrating the verification of resources associated with iterative linked downlink control channel candidates according to aspects of this disclosure. [Figure 3B] This figure shows an example of a resource diagram illustrating the verification of resources associated with iterative linked downlink control channel candidates according to aspects of this disclosure. [Figure 4] This figure shows an example of a resource diagram illustrating the validation of resources associated with an iteratively linked downlink control channel candidate according to an aspect of this disclosure. [Figure 5] This figure shows an example of a process flow diagram that supports the validation of resources associated with iterative linked downlink control channel candidates according to an aspect of this disclosure. [Figure 6] This is a block diagram of a device that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 7] This is a block diagram of a device that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 8] This is a block diagram of a communications manager that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 9] This is a diagram of a system including a device that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 10] This is a block diagram of a device that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 11] This is a block diagram of a device that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 12] This is a block diagram of a communications manager that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 13] This is a diagram of a system including a device that supports the validation of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. [Figure 14] This flowchart shows a method for supporting the validation of resources associated with an iteratively linked downlink control channel candidate, according to an aspect of this disclosure. [Figure 15] This flowchart shows a method for supporting the validation of resources associated with an iteratively linked downlink control channel candidate, according to an aspect of this disclosure. [Figure 16] This flowchart shows a method for supporting the validation of resources associated with an iteratively linked downlink control channel candidate, according to an aspect of this disclosure. [Figure 17] This flowchart shows a method for supporting the validation of resources associated with an iteratively linked downlink control channel candidate, according to an aspect of this disclosure. [Modes for carrying out the invention]

[0045] The various channels and signal resources that user equipment (UEs) should use for communication in a wireless communication system can be allocated by the base station. Due to processing complexity, interference, and other considerations, the location of such resources relative to other resources can affect the reliability and efficiency of communication. In some cases, the base station may configure the resources of a physical downlink shared channel (PDSCH) for the UE using a certain resource mapping type (e.g., mapping type A). Due to various considerations, a physical downlink control channel (PDCCH) scheduling a PDSCH in the same slot of a PDCCH is not expected to schedule a PDSCH using type A mapping if the PDCCH is not received within some threshold number of symbols in the slot. That is, a PDSCH with type A mapping can be scheduled in the same slot of a scheduling PDCCH if the scheduling PDCCH is contained within the first three symbols of the slot.

[0046] Another resource consideration scenario concerns channel status information (CSI) reference signal resources. Downlink control information (DCI) messages can trigger CSI reporting on a physical uplink shared channel (PUSCH). Based on the CSI request field within the DCI, the UE can identify the CSI-RS resources that the UE should measure for CSI reporting. Due to various considerations, the UE may not expect aperiodic CSI-RS to be transmitted prior to the symbol carrying the triggering DCI (e.g., a DCI containing a CSI reporting request). More specifically, the UE expects the CSI-RS resources to be located during or after the first symbol carrying the DCI that triggers the measurement of the CSI-RS resources.

[0047] Some wireless communication systems may support PDCCH repetition to improve the reliability and efficiency of communication. That is, by repeating PDCCH transmissions, the receiving UE may increase its probability of successfully decoding the PDCCH and thus be able to identify various control information, including scheduling information for other channels. In some cases, the UE may decode one of the PDCCH candidates. In such cases, the network or base station may not have information to identify which candidate the UE was able to decode. In such cases, the applicability of resource configuration considerations may be unclear.

[0048] The implementations described herein provide techniques for applying verification rules when iterative (and linked) PDCCHs are configured. In some examples, a UE may decode a DCI from one or both of the (linked) first and second PDCCH candidates, and the DCI may schedule a PDCCH resource. At the start of a transmission time interval (e.g., a slot) in which the PDCCH resource is scheduled, the UE may apply rules to verify that at least one of the first or second PDCCH candidates is within a threshold number of symbols. In some cases, the UE may consider whether the candidates are located between or within slots in order to determine which verification rule to apply.

[0049] In some examples, the UE may decode a DCI from one or both of the (linked) first and second PDCCH candidates, and the DCI may include a CSI request. The UE may apply rules to verify that the reference signal resource associated with the CSI request is located after the start symbol of at least the first PDCCH candidate. In some cases, the UE may verify that the reference signal resource is located after the start symbols of both the first and second PDCCH candidates. These and other implementations are further described herein with reference to the following figures.

[0050] Aspects of this disclosure are first described in the context of wireless communication systems. Aspects of this disclosure are further described with respect to wireless communication systems, various resource diagrams, and process flow diagrams. Aspects of this disclosure are further illustrated and described by apparatus diagrams, system diagrams, and flowcharts relating to the verification of resources associated with iterative linked downlink control channel candidates.

[0051] Figure 1 shows an example of a wireless communication system 100 that supports iterative verification of resources associated with linked downlink control channel candidates, according to aspects of the present disclosure. 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 LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support extended broadband communication, ultra-high reliability (e.g., mission-critical) communication, low-latency communication, communication with low-cost, low-complexity devices, or any combination thereof.

[0052] The base stations 105 may be distributed across a geographical area to form a wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and base station 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographical area over which the base stations 105 and UEs 115 may support the communication of signals by one or more radio access technologies.

[0053] The UE115 may be distributed across the entire coverage area 110 of the wireless communication system 100, and each UE115 may be fixed, mobile, or both at different times. The UE115 may be devices of different forms or with different capabilities. Several exemplary UE115 are shown in Figure 1. The UE115 described herein may be capable of communicating with various types of devices, such as other UE115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in Figure 1.

[0054] Base station 105 may communicate with the core network 130, communicate with each other, or both. For example, base station 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base station 105 may communicate with each other through the backhaul links 120 (e.g., via X2, Xn, or other interfaces) directly (e.g., directly between base station 105s), indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be one or more wireless links, or may include one or more wireless links.

[0055] One or more of the base stations 105 described herein may include, or be referred to as, a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next-generation NodeB or gigaNodeB (either of which may be called a gNB), a home NodeB, a home eNodeB, or other preferred terms.

[0056] UE115 may include, or may be referred to as, a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other preferred term; “device” may also be referred to as a unit, station, terminal, or client, in the examples. UE115 may also include, or may 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, UE115 may include, or may be referred to as, a wireless local loop (WLL) station, an Internet of Things (IoT) device, any Internet of Things (IoE) device, or a machine-type communications (MTC) device, in the examples, or may be implemented in various items such as appliances, vehicles, meters, etc.

[0057] The UE115 described herein may be capable of communicating with other UE115s, which may sometimes act as repeaters, as well as with various types of devices, such as base stations 105 and network equipment, including, among other examples, macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, as shown in Figure 1.

[0058] UE115 and base station 105 may wirelessly communicate with each other via one or more communication links 125 over one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication links 125. For example, a carrier used for communication link 125 may include a portion of the radio frequency spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry collected signaling (e.g., synchronization signals, system information), control signaling to coordinate operations with the carrier, user data, or other signaling. The wireless communication system 100 may support communication with UE115 using carrier aggregation or multi-carrier operation. UE115 may consist of multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with both frequency-division duplex (FDD) component carriers and time-division duplex (TDD) component carriers.

[0059] In some examples (for instance, in carrier aggregation configurations), carriers may also have capture signaling or control signaling to coordinate their operation with other carriers. Carriers may be associated with frequency channels (e.g., Advanced Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be arranged according to a channel raster for discovery by the UE115. Carriers may operate in standalone mode, where initial acquisition and connection may be performed via the carrier by the UE115, or carriers may operate in non-standalone mode, where connection is anchored using different carriers (e.g., the same or different radio access technologies).

[0060] A communication link 125 shown in the wireless communication system 100 may include uplink transmissions from the UE 115 to the base station 105, or downlink transmissions from the base station 105 to the UE 115. The carrier may carry downlink communications or uplink communications (for example, in FDD mode), or may be configured to carry downlink communications and uplink communications (for example, in TDD mode).

[0061] A carrier may be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths for the carrier of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication on a specific carrier bandwidth, or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication over carriers related to multiple carrier bandwidths. In some examples, each UE 115 being served may be configured to operate on a portion of the carrier bandwidth (e.g., a subband, BWP), or all of it.

[0062] The signal waveform transmitted on a carrier can consist of multiple subcarriers (for example, using multicarrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM). In systems employing MCM techniques, a resource element may consist of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements the UE115 receives, and the higher the order of the modulation scheme, the higher the data rate of the UE115 can be. Wireless communication resources may refer to a combination of radio frequency spectral resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communication with the UE115.

[0063] One or more numerologies may be supported for a carrier, where the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, UE115 may consist of multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communication for UE115 may be limited to one or more active BWPs.

[0064] The time interval for base station 105 or UE115 is, for example, T s = 1 / (Δf max ·N f It can refer to a sampling period of ) seconds, and can be expressed as a multiple of the basic time unit, where Δf max This can represent the maximum supported subcarrier interval, N fThis may represent the maximum supported Discrete Fourier Transform (DFT) size. The time interval of communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0065] Each frame may contain multiple sequentially numbered subframes or slots, each subframe or slot having the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into several slots. Alternatively, each frame may contain a variable number of slots, the number of slots may depend on the subcarrier interval. Each slot may contain several symbol periods (e.g., depending on the length of the cyclic prefix prepared for each symbol period). In some wireless communication systems 100, a slot may be further divided into several minislots containing one or more symbols. Except for the cyclic prefix, each symbol period may contain one or more (e.g., N) symbols. f The sampling period may include (1) units. The duration of the symbol period may depend on the subcarrier interval or the frequency band of operation.

[0066] A subframe, slot, minislot, or symbol may be the minimum scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be called a transmit time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in the TTI) may be variable. Additionally or alternatively, the minimum scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0067] Physical channels may be multiplexed on the carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on the downlink carrier using one or more of the following techniques: time-division multiplexing (TDM), frequency-division multiplexing (FDM), or hybrid TDM-FDM. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by the number of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UE115s. For example, one or more of the UE115s may monitor or search for control regions for control information according to one or more search space sets, each search space set may contain one or more control channel candidates at one or more aggregation levels located in a cascaded manner. The aggregation level for a candidate control channel may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with encoded 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 UE115s, and a UE-specific search space set for sending control information to a specific UE115.

[0068] Each base station 105 may provide communication coverage through one or more cells, such as macrocells, small cells, hotspots, or other types of cells, or any combination thereof. The term “cell” may refer to a logical communication entity used for communication with base station 105 (for example, on a carrier) and may be associated with an identifier for distinguishing neighboring cells (for example, a physical cell identifier (PCID), a virtual cell identifier (VCID), or other). In some examples, a cell may also refer to a geographical coverage area 110 or a portion of geographical coverage area 110 (for example, a sector) on which the logical communication entity operates. Such cells may range from smaller areas (for example, structures, subsets of structures) to larger areas, depending on various factors such as the capabilities of base station 105. For example, a cell may be, in the example, a building, a subset of a building, or external space between or overlapping with geographical coverage area 110.

[0069] Macrocells generally cover relatively large geographical areas (e.g., a radius of several kilometers) and can enable unrestricted access by UE115s subscribed to the services of a network provider that supports macrocells. Small cells may be associated with lower-power base stations 105 compared to macrocells, and small cells may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macrocells. Small cells may provide unrestricted access to UE115s subscribed to the services of a network provider, or they may provide restricted access to UE115s associated with small cells (e.g., UE115s in a limited subscriber group (CSG), UE115s associated with users in a home or office). Base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0070] In some cases, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)) that can provide access to different types of devices.

[0071] In some examples, base station 105 may be mobile and therefore capable of providing communication coverage to a moving geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but these 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. The wireless communication system 100 may include, for example, heterogeneous networks in which different types of base stations 105 provide coverage to various geographic coverage areas 110 using the same or different radio access technologies.

[0072] The wireless communication system 100 may support synchronous or asynchronous operation. In synchronous operation, base stations 105 may have similar frame timings, and transmissions from different base stations 105 may be approximately synchronized in time. In asynchronous operation, base stations 105 may have different frame timings, and transmissions from different base stations 105 may, in some cases, not be synchronized in time. The techniques described herein may be used for either synchronous or asynchronous operation.

[0073] Some UE115s, such as MTC devices or IoT devices, may be low-cost or low-complexity devices that can provide automated communication between machines (for example, via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that enables devices to communicate with each other or with base stations 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that incorporate sensors or meters to measure or capture information and relay that information to a central server or application program that utilizes such information or presents it to a human interacting with the application program. Some UE115s may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security detection, physical access control, and transaction-based business billing.

[0074] Some UE115s may be configured to use power-saving operating modes, such as half-duplex communication (e.g., modes that support one-way communication via transmit or receive, but not simultaneous transmit and receive). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power-saving techniques for the UE115 include entering a power-saving deep sleep mode when not engaged in active communication, operating over a limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UE115s may be configured for operation using narrowband protocol types associated with a defined portion or range within the carrier, within the carrier's guard band, or outside the carrier (e.g., a set of subcarriers or resource blocks (RBs)).

[0075] The wireless communication system 100 may be configured to support ultra-high reliability communication, low latency communication, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-high reliability low latency communication (URLLC) or mission-critical communication. The UE 115 may be designed to support ultra-high reliability, low latency, or critical functions (e.g., mission-critical functions). Ultra-high reliability communication may include private or group communication and may 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 may include service prioritization, and mission-critical services may be used for public safety or general commercial purposes. The terms ultra-high reliability, low latency, mission-critical, and ultra-high reliability low latency may be used interchangeably herein.

[0076] In some examples, UE115 may also be able to communicate directly with other UE115 via a device-to-device (D2D) communication link 135 (for example, using a peer-to-peer (P2P) protocol or a D2D protocol). One or more UE115s utilizing D2D communication may be within the geographical coverage area 110 of base station 105. Other UE115s in such a group may be outside the geographical coverage area 110 of base station 105, or in some cases may not be able to receive transmissions from base station 105. In some examples, a group of UE115s communicating via D2D communication may utilize a one-to-many (1:M) system where each UE115 communicates with any other UE115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication occurs between UE115s without the involvement of base station 105.

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

[0078] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an advanced packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)), and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access layer (NAS) functions, such as mobility, authentication, and bearer management for UE 115 serviced by base station 105 associated with the core network 130. User IP packets may be forwarded through user plane entities that may provide IP address allocation and other functions. A user plane entity may be connected to one or more network operators' IP services 150. These IP services may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or a packet-switched streaming service.

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

[0080] The wireless communication system 100 may typically operate using one or more frequency bands in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is called the ultra-high frequency (UHF) region or decimeter band, as the wavelengths range from approximately 1 decimeter to 1 meter. While UHF waves may be blocked or redirected by building and environmental characteristics, their waves can penetrate structures well enough for a macrocell to service an indoor UE 115. Transmitting UHF waves may involve smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmitting using lower frequencies and longer waves in the shortwave (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0081] The wireless communication system 100 may also operate in the centimeter wave (SHF: super high frequency) region, using a frequency band from 3 GHz to 30 GHz, also known as the centimeter band, or in the millimeter wave (EHF: extremely high frequency) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band. In some examples, the wireless communication system 100 may support millimeter wave (mmW) communication between a UE 115 and a base station 105, where the EHF antennas of each device may be smaller and more densely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, propagation of EHF transmissions may be subject to greater atmospheric attenuation than SHF or UHF transmissions and may have shorter distances. The techniques disclosed herein may be employed across transmissions using one or more different frequency domains, and the specified use of bands across these frequency domains may vary by country or regulatory body.

[0082] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology in unlicensed 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 may employ carrier sensing for collision detection and collision avoidance. In some examples, operation in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in licensed bands (e.g., LAA). Operation in unlicensed spectrums may include, among other examples, downlink transmission, uplink transmission, P2P transmission, or D2D transmission.

[0083] Base station 105 or UE115 may be equipped with multiple antennas that 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 UE115 may be located in one or more antenna arrays or antenna panels that can support MIMO operation or transmit beamforming or receive beamforming. For example, one or more base station antennas or antenna arrays may be collated in 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 diverse geographical locations. Base station 105 may have an antenna array having several rows and columns of antenna ports that base station 105 can use to support beamforming of communication with UE115. Similarly, UE115 may have one or more antenna arrays that can support various MIMO or beamforming operations. As an addition or alternative, an antenna panel may support radio frequency beamforming for signals transmitted through antenna ports.

[0084] A base station 105 or UE115 may use MIMO communication to enhance spectral efficiency by leveraging multipath signal propagation by transmitting or receiving multiple signals across different spatial layers. Such techniques are sometimes called spatial multiplexing. Multiple signals may be transmitted by a transmitting device over different antennas or different combinations of antennas. Similarly, multiple signals may be transmitted by a receiving device over different antennas or different combinations of antennas. Each of the multiple signals may be called a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0085] Beamforming, sometimes called spatial filtering, directional transmission, or directional reception, is a signal processing technique that can be used in a transmitting or receiving device (e.g., base station 105, UE115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals communicated through the antenna elements of an antenna array such that several signals propagating in a particular direction relative to the antenna array undergo constructive interference, while other signals undergo destructive interference. The coordination of signals communicated through antenna elements may include the transmitting or receiving device applying amplitude offset, phase offset, or both to the signals carried through the antenna elements associated with the device. The coordination associated with each antenna element may be defined by a beamforming weight set associated with a particular direction (e.g., relative to the antenna array of the transmitting or receiving device, or to some other direction).

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

[0087] Some signals, such as data signals associated with a specific receiving device, may be transmitted by the base station 105 in a single beam direction (for example, a direction associated with a receiving device such as UE115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE115 may receive one or more signals transmitted by the base station 105 in different directions, and UE115 may report to the base station 105 an indication of the signal received with the highest signal quality or, in some cases, an acceptable signal quality.

[0088] In some examples, transmission by a device (e.g., by base station 105 or UE115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from base station 105 to UE115). UE115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 may transmit reference signals that may or may not be precoded (e.g., cell-specific reference signals (CRS), channel-state information reference signals (CSI-RS)). UE115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). These techniques will be described with reference to signals transmitted by the base station 105 in one or more directions, but the UE 115 may employ similar techniques to transmit signals multiple times in different directions (for example, to identify beam directions for subsequent transmission or reception by the UE 115) or to transmit signals in a single direction (for example, to transmit data to a receiving device).

[0089] When a receiving device (e.g., UE115) receives various signals from a base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals, it may attempt multiple receiving configurations (e.g., directional listening). For example, the receiving device may attempt multiple receiving directions by receiving through different antenna subarrays, by processing the received signal according to different antenna subarrays, by receiving according to different sets of receive beamforming weights (e.g., different directional listening weights) applied to the received signal at multiple antenna elements of an antenna array, or by processing the received signal according to different sets of receive beamforming weights applied to the received signal at multiple antenna elements of an antenna array, any of which may be referred to as “listening” by different receiving configurations or receiving directions. In some examples, the receiving device may use a single receiving configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receiving configuration may be matched to a beam direction determined based on listening by different receiving configuration directions (e.g., the beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or possibly acceptable signal quality, based on listening by multiple beam directions).

[0090] The wireless communication system 100 may 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 may be IP-based. The Radio Link Control (RLC) layer may perform packet segmentation and reassembly for communication on logical channels. The Medium Access Control (MAC) layer may perform priority processing and multiplexing logical channels to transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to improve link efficiency by supporting retransmission at the MAC layer. In the control plane, the Radio Resource Control (RRC) protocol layer may establish, configure, and maintain RRC connections between the UE 115 and the base station 105 or core network 130, supporting radio bearers for user plane data. At the physical layer, transport channels may be mapped to physical channels.

[0091] UE115 and base station 105 may support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Retransmission Request (ARQ) feedback is one technique to increase the likelihood of data being correctly received on communication link 125. HARQ may include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Retransmission Request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise conditions). In some examples, devices may support same-slot HARQ feedback, where the device may provide HARQ feedback within a slot for data received in a previous symbol within a particular slot. In other cases, the device may provide HARQ feedback in subsequent slots or according to some other time interval.

[0092] The wireless communication system 100 may support channel repetition to improve the reliability of communication. For example, the base station 105 may repeat PDCCH transmissions to increase the likelihood that the receiving UE 115 will decode the DCI of the PDCCH and thus identify control information and scheduling information. However, in such a case, the network (base station 105) may not be able to identify candidates for which the DCI will be decoded by the UE 115. Therefore, resource location analysis may be difficult to apply by the UE 115 and the base station 105.

[0093] The implementations described herein support confirmation rules that UE115 and / or base station 105 may apply in PDCCH iteration scenarios. For example, if UE115 is configured to monitor PDCCH iterations, UE115 may apply one or more rules when a DCI contained in one of the iterations schedules a PDSCH (e.g., type A) or triggers a CSI report. In the case of PDSCH type A scheduling, UE115 may decode the DCI in one or both of the first and second PDCCH candidates and apply a rule to determine that at least one of the first or second PDCCH candidates is within a threshold symbol count at the start of the transmission time interval in which the PDSCH resource is scheduled. Based on the application of the rule, UE115 may receive downlink messages on the PDSCH resource. In some examples, UE115 may consider whether the first and second PDCCH iterations are between or within slots and apply a rule based on that determination.

[0094] In the case of a CSI-RS report triggered by a DCI of a linked PDCCH candidate, UE115 may decode the DCI (including the CSI request) in one or both of the first and second PDCCH candidates and apply rules to determine that the reference signal resource associated with the CSI request is located after the start symbol of at least the first PDCCH candidate (e.g., the earliest candidate). Based on the application of the rules, UE115 may transmit the CSI report. In some cases, UE115 may determine that the reference signal resource is located after the start symbols of both the first and second PDCCH candidates.

[0095] Therefore, using these rules, UE115 can determine that the locations of various resources are unlikely to cause additional complexity considerations, interference, or any other error conditions. Furthermore, base station 105 may determine that such rules are relevant when scheduling various resources such as CSI-RS resources and PDSCH resources. Thus, the application of these rules can, among other things, improve the reliability and efficiency of communications.

[0096] Figure 2 shows an example of a wireless communication system 200 that supports the verification of resources associated with iteratively linked downlink control channel candidates, according to an aspect of the present disclosure. The wireless communication system 200 may implement an aspect of the wireless communication system 100. For example, the wireless communication system 200 includes a base station 105-a and a UE 115-a, which may be examples of the corresponding devices in Figure 1. Figure 2 shows an example of communication 205 between the base station 105-a and the UE 115-a.

[0097] As indicated by communication 205-a, the wireless communication system 200 may support base station 105-a transmitting control information in PDCCH210 which schedules PDSCH215. In some cases, the control information (e.g., DCI) may trigger PDSCH215 using type A mapping, as indicated by communication 205-a. According to type A PDSCH mapping, the first demodulation reference signal (DMRS) 215 symbol of PDSCH215 is either the third symbol (symbol number 2) or the fourth symbol (symbol number 3) of the transmission time interval (e.g., slot 250). The symbol location of DMRS220 may be configured in the Master Information Block (MIB). In the type A mapping scenario, the start symbol of PDSCH215 may be symbol number 0, 1, 2, or 3 of slot 250. The start symbol of PDSCH may be dynamically configured in the Time Domain Resource Allocation (TDRA) field of the DCI which may be included in PDCCH210. Given the complexity of the process, UE115-a may not expect to receive PDSCH215 in slot 250 using type A mapping (as shown in communication 205-a) if PDCCH210, which schedules PDSCH215, is received in the same slot 250 and is not included in the first three symbols of the slot. As illustrated, PDCCH210 is included in the first three symbols 225 and therefore satisfies the rule. However, if PDCCH210 is not included in the first three symbols 225, UE115-a may, depending on its implementation, throw an error, ignore the resource, or perform another action.

[0098] As shown in communication 205-a, the wireless communication system 200 may support CSI reporting. DCI235 (e.g., included in PDCCH210), which may be an example of an uplink DCI in DCI format 0_1 ​​or 0_2, may trigger a CSI report on PUSCH, which may be called an aperiodic CSI report. The DCI may include a CSI request field indicating a trigger state among several trigger states configured in RRC (e.g., via the upper layer parameter AperiodicTriggerStateList). Each trigger state in the list may be linked to a CSI-RS resource set, and each CSI-RS resource set may have multiple CSI-RS resources. UE115-a may measure a CSI-RS resource (e.g., CSI-RS resource 230) and send a CSI report on the resource in PUSCH. To determine the location of the CSI-RS resource, a slot offset may be configured for each CSI-RS resource set using control messaging such as RRC. When the slot offset of the CSI-RS resource set associated with the trigger state indicated in the DCI is 0, the CSI-RS resources in the CSI-RS resource set are received in the same slot as the DCI. Given the complexity of the processing, among other things, UE115-a may not expect a non-periodic CSI-RS to be sent before the OFDM symbol 225 carrying the trigger DCI235 when the CSI-RS resource is sent in the same slot as the trigger DCI235. However, as shown in communication 205-b, if the CSI-RS resource 230 is before the DCI235, UE115-a may, depending on the implementation of UE115-a, throw an error, ignore the resource, or perform some other action.

[0099] The wireless communication system 200 may also support configuring UE115-a with a set of control resource sets (CORESETs) in the bandwidth portion of a serving cell. Each CORESET may be associated with an active transmit configuration indicator (TCI) state. RRC signaling may be used as part of the CORESET configuration to configure the resource blocks in the frequency domain and the number of symbols in the CORESET. A PDCCH search space set (SS set) may be associated with one CORESET, and an upper limit (e.g., 10) of search space sets in the bandwidth portion of a component carrier / serving cell may be determined. Using control signaling such as RRC signaling, a search space set may be configured with the associated CORESET, the slot periodicity and offset to monitor, the symbols to monitor within the slot (e.g., to determine PDCCH monitoring opportunities for the search space set), the DCI format to monitor, and the number of PDCCH candidates for a given aggregation level.

[0100] A PDCCH candidate can be defined as part of a search space set configuration. A PDCCH candidate with a given aggregation level and a given candidate index is defined in a given search space set. A DCI may be received by one PDCCH candidate, and UE115-a may monitor PDCCH candidates in the search space set. One or more candidates that pass the cyclic redundancy check (successfully decoded) may correspond to a decoded DCI, and UE115-a may blind decode the DCI.

[0101] As described herein, the wireless communication system 200 can support PDCCH iterations, each iteration being a PDCCH candidate. Two PDCCH candidates may carry the same DCI and can therefore be considered "linked". Two linked PDCCH candidates may have the same aggregation level (same number of control channel elements), and the DCI payload transmitted using the two PDCCH candidates may be the same. UE115-b may perform soft synthesis of multiple PDCCH candidates to decode the DCI. To support soft synthesis, UE115-a may be configured to identify linked PDCCH candidates. To support linking, two search space sets (carrying PDCCH candidates) may be linked via control signaling, such as RRC signaling. The monitoring opportunities of the two linked search space sets may be mapped one-to-one. PDCCH candidates having the same aggregation level and the same candidate index in two linked search space sets can be linked, and the two linked search space sets may consist of the same number of candidates for each aggregation level.

[0102] The first search space set 240 and the second search space set 245 are shown in slot 250. Arrows spanning the first search space set 240 and the second search space set 245 indicate linked PDCCH candidates within each search space set. Communications 205-c and 205-d illustrate possible search space set configurations, but it should be understood that other configurations are contemplated within the scope of this disclosure.

[0103] When DCI235 schedules PDSCH215 with mapping type A, or when DCI235 triggers one or more aperiodic CSI-RS resources and DCI235 is received in the same slot as one or both of the linked PDCCH candidates, resource considerations for PDSCH resources and CSI-RS resources may be unclear. More specifically, since UE115-a can decode the DCI in a first PDCCH iteration, a second PDCCH iteration, or both the first and second iterations, the network (e.g., base station 105-a) may not be able to identify the iteration carrying the DCI that the UE is decoding. In such cases, UE115-a may not be able to determine where to consider resources for a PDCCH or DCI.

[0104] The implementations described herein provide one or more confirmation rules that UE115-a can apply when certain conditions occur. For example, if UE115-a discovers DCI235 in a PDCCH candidate linked for a PDCCH iteration (e.g., in two linked corresponding search space sets and monitoring opportunities) and DCI schedules a PDCCH with mapping type A, UE115-a may apply a confirmation rule that considers whether at least one of the first or second PDCCH candidate is within a threshold symbol count at the start of the transmission time interval in which the PDCCH resource is scheduled. In some cases, UE115-a may consider whether the PDCCH candidates are between slots or within a slot to determine whether one or both candidates are within a threshold symbol count at the start of the slot.

[0105] Figures 3A and 3B show examples of resource diagrams 300 that demonstrate the verification of resources associated with iterative-based linked downlink control channel candidates according to aspects of the present disclosure. In some examples, the resource diagrams may implement aspects of a wireless communication system 100. For example, UE 115 may receive instructions from base station 105 (as described with reference to Figures 1 and 2) that a first PDCCH candidate in a first search space set is linked to a second PDCCH candidate in a second search space set, and the first PDCCH candidate precedes the second PDCCH candidate, at least in part. In some examples, as shown in Figure 3A, the first PDCCH candidate may reside in a first slot (e.g., TTI), and the second PDCCH candidate may reside in a second slot. Alternatively, as shown in Figure 3B, the first and second PDCCH candidates may reside in a common slot. As will be explained in more detail, the DCI of linked PDCCH candidates in Figures 3A and 3B schedules a PDSCH (e.g., a PDSCH using type A mapping) in at least one slot (e.g., TTI) of the linked candidates. Thus, the UE and base station can apply verification rules to determine whether the PDSCH resource and PDCCH candidate are valid.

[0106] Figure 3A shows resource diagram 300-a including a first TTI 305-a and a second TTI 305-b. In some cases, a first PDCCH candidate 310-a corresponding to a first search space may be the first TTI 305-a, and a second PDCCH candidate 310-b corresponding to a second search space may be the second TTI 305-b. The locations of the search space sets, and therefore the linked PDCCH candidates 310, may be configured by the base station. In some examples, the base station may send an instruction to the UE that a first PDCCH candidate 310-a (e.g., the first PDCCH candidate) is linked to a second PDCCH candidate 310-b (e.g., the second PDCCH candidate). Specifically, the base station may send at least one RRC message (e.g., for iteration) indicating that the first and second search spaces are linked, which the UE may receive. The instructions may take the form of a CORESET and search space set configuration, as illustrated with respect to Figure 2. Based on the first search space, the second search space, and the RRC, the UE may determine that the first PDCCH candidate 310-a and the second PDCCH candidate 310-b are linked. Furthermore, the base station may schedule the search space set such that the first PDCCH candidate 310-a precedes the second PDCCH candidate 310-b, at least partially. Furthermore, based on the instructions, the UE may determine that the first PDCCH candidate 310-a is placed in the first TTI 305-a and the second PDCCH candidate 310-b is placed in the second TTI 305-b (for example, between slots).

[0107] Since PDCCH candidate 310 can be linked, a PDCCH candidate can carry the same DCI payload. The UE can decode the first PDCCH candidate 310-a, the second PDCCH candidate 310-b, or both DCIs. The UE may decide that the DCI will schedule resources for the PDSCH in a Type A resource mapping. For example, the UE may decide that the DCI will schedule resources for the PDSCH in a second TTI 305-b that includes the second PDCCH candidate 310-b. Since the PDSCH resources are scheduled in a slot (e.g., the second TTI 305-b) that includes a linked PDCCH candidate (e.g., PDCCH candidate 310-b) carrying the scheduling DCI, the UE may apply a verification rule to verify that the second PDCCH candidate 310-b is within a threshold number of symbols (e.g., 3 symbols) at the beginning of the second TTI 305-b corresponding to the resources scheduled for the PDSCH. More specifically, as shown in Figure 3A, when PDCCH candidates are placed between slots and PDSCH 315 is scheduled in the same slot as a later PDCCH candidate (e.g., a second PDCCH candidate 310-b), the UE may apply a confirmation rule. Based on the decision and confirmation, the base station may send downlink messages in the confirmed resources, including a Type A resource mapping corresponding to the scheduled PDSCH resource, which the UE may receive.

[0108] Figure 3B shows resource diagram 300-b, which includes a first PDCCH candidate 320-a and a second PDCCH candidate 320-b within a TTI 325 (e.g., a slot). The base station may send an instruction (e.g., an RRC configuration) to the UE indicating that the first PDCCH candidate 320-a is linked to the second PDCCH candidate 320-b. Based on the instruction, the UE may determine that the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are linked. The configuration may specify that both the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are located within a TTI 325 (e.g., within a slot). The base station transmits DCIs in both the first PDCCH candidate 320-a and the second PDCCH candidate 320-b. The UE may decode the DCI associated with the first PDCCH candidate 320-a, the second PDCCH candidate 320-b, or both. The UE may decide that the DCI will schedule the resources of PDSCH330 using a Type A resource mapping.

[0109] In some cases, the UE and base station may determine that the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are located within the TTI325 where the resources (e.g., PDSCH using Type A resource mapping) are scheduled. Based on this determination, the UE and base station may apply verification rules to validate the locations of the first PDCCH candidate 320-a and the second PDCCH candidate 320-b within the TTI325 relative to the PDSCH resources scheduled within the same TTI325. Specifically, the UE and base station may verify that one or both of the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are located within one or more of the initial threshold symbol counts of the TTI325 (e.g., the first three symbols in some implementations). Therefore, when both PDCCH candidates 320 are placed within the same TTI of PDSCH330 using Type A mapping, the UE and base station may apply verification rules to determine whether one or both PDCCH candidates 320 are effectively placed. The device may apply either rule (for example, to verify the placement of one or both candidates), and the rule applied may be based on the UE implementation, pre-configuration, or configuration from the base station. Based on the decision and verification, the base station may send at least one downlink message within the verified resources of PDSCH330, which the UE may receive.

[0110] Therefore, as shown in Figures 3A and 3B, when the DCI of a linked candidate schedules a PDSCH using a Type A mapping in the linked candidate, the UE may apply one of several rules, which may depend on the placement of the PDCCH candidate, to verify that the resources of the PDSCH and / or PDCCH candidate are valid. This technique can support improved communication reliability and efficiency by reducing resource complexity.

[0111] Figure 4 shows an example of a resource diagram 400 that supports the verification of resources associated with iteratively linked downlink control channel candidates according to aspects of the present disclosure. In some examples, the resource diagram 400 may implement aspects of wireless communication systems 100 and 200. For example, UE 115 may receive an instruction from base station 105 (as described with reference to Figures 1 and 2) that a first PDCCH candidate in a first search space set is linked to a second PDCCH in a second search space set, and the first PDCCH candidate precedes the second PDCCH candidate, at least in part, based on the search space set configuration. The search set configuration may be configured using control messaging such as RRC messaging. In some examples, the first and second PDCCH candidates may reside in a common slot (e.g., TTI 405) based on the configuration of their respective search space sets corresponding to the linked PDCCH candidates.

[0112] The base station may transmit a DCI containing a CSI request to the UE via a first PDCCH candidate 410-a and a second PDCCH candidate 410-b. The CSI request may include fields (e.g., trigger state indications) corresponding to the CSI-RS resource 415 that the UE should use for measurement and CSI reporting. The UE may decode the DCI from the first PDCCH candidate 410-a, the second PDCCH candidate 410-b, or both, and identify the CSI request contained in the DCI and the corresponding CSI-RS resource 415. In some cases, the UE may determine which slot the CSI-RS resource 415 is placed in based on the offset indication in the DCI, as illustrated in Figure 2. If a CSI-RS resource 415 is scheduled in the same slot as the DCI that triggers it (for example, the offset instruction in the DCI is 0), the UE and base station may apply a confirmation rule to determine that the reference signal resource associated with the CSI request (e.g., CSI-RS resource 415) is validly scheduled. That is, the UE may not expect that the CSI-RS resource 415 is scheduled before one or both of the OFDM symbols of the PDCCH candidates 410 that carry the trigger DCI. In some examples, the rule specifies that only the earliest PDCCH candidate is considered (e.g., CSI-RS resource 415-b is placed after the start symbol of the earliest PDCCH candidate 410-a). In other examples, the rule specifies that both PDCCH candidates are considered (e.g., CSI-RS resource 415-c is placed after the start symbols of both PDCCH candidates 410). Which rules apply may be pre-configured or configured by the base station.

[0113] If CSI-RS resource 415 is not effectively scheduled, UE 115 may, depending on the implementation, throw an error, ignore the invalid resource, or perform some other action. For example, as shown in Figure 4, CSI-RS resource 415-a does not satisfy the confirmation rule due to its position ahead of the earliest PDCCH candidate (and both PDCCH candidates 410), and therefore UE may issue an error, ignore CSI-RS resource 415-a, ignore the DCI, or perform some other action. If CSI-RS resource 415 satisfies the confirmation rule, UE may measure CSI-RS resource 415 and send a CSI report to the base station.

[0114] Therefore, as shown in Figure 4, when a linked candidate DCI triggers a CSI-RS resource in the TTI containing the linked candidate, the UE may apply one of the rules to verify that the CSI-RS and / or PDCCH candidate resources are valid. This technique can support improved communication reliability and efficiency by reducing resource complexity.

[0115] Figure 5 shows an example of a process flow diagram 500 that supports the verification of resources associated with an iterative-based linked downlink control channel candidate, according to an aspect of this disclosure. The process flow diagram 500 includes aspects of the wireless communication system 100 in Figure 1 and the wireless communication system 200 in Figure 2. For example, the process flow diagram includes base stations 105-b and UE 115-b, which may be examples of the corresponding devices described with respect to Figures 1 and 2. Base stations 105-b and UE 115-b may use a variety of resources for communication, such as the resources shown in resource diagram 300 in Figure 3 and resource diagram 400 in Figure 4.

[0116] In 505, UE115-b may receive a directive from base station 105-b indicating that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set. The first downlink control channel candidate may be received at least partially before the second downlink control channel candidate. The directive may take the form of an RRC configuration for each search space set corresponding to the control channel candidates. UE115-b may monitor the search space sets to identify the control channel candidates.

[0117] In 510, UE115-b may decode downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate. In some examples, the downlink control information may schedule resources on a downlink shared channel (e.g., PDSCH) for a transmission time interval that includes at least the second downlink control channel candidate. In some examples, the downlink control information may include a channel status information request.

[0118] In 515, UE115-b may apply verification rules based on resources scheduled or triggered by DCI. For example, if DCI schedules a PDSCH resource for a downlink shared channel in a transmit interval that includes one or both downlink control channel candidates, the verification rule may be that at least one of the first or second downlink control channel candidates is within a threshold symbol count at the start of the transmit interval in which the resource is scheduled. In some cases, the rule applied is based on the first and second downlink control channel candidates being in separate transmit intervals. In such cases, UE115-b may verify that the second downlink control channel candidate is within a threshold symbol count for the second transmit interval. In some cases, the rule applied is based on the fact that both downlink control channel candidates are in the same transmit interval in which the downlink shared channel resource is scheduled. In such cases, UE115-b may verify that both the first downlink control channel candidate and the second downlink control channel candidate are located within the threshold number of symbols of the transmission time interval, or that at least one of the first downlink control channel candidate and the second downlink control channel candidate is located within the threshold number of symbols of the transmission time interval.

[0119] If the DCI includes a channel state information request, the confirmation rule may be that the reference signal resource associated with the channel state information request is located after at least the start symbol of the first downlink control channel candidate. In some cases, when the DCI includes a channel state information request, the confirmation rule is that the reference signal resource is located after the start symbols of both the first and second downlink control channel candidates.

[0120] In 520, when DCI schedules a downlink shared channel, UE115-b may receive downlink messages in the resource from base station 105-b, at least partially based on the fact that the confirmation rules associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate are met.

[0121] In 525, when the DCI includes a channel status information request, UE115-b may transmit a channel status information report to base station 105-b, at least in part, based on the fact that the confirmation rules associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate are met.

[0122] Figure 6 shows a block diagram 600 of a device 605 that supports the verification of resources associated with iterative-based linked downlink control channel candidates, according to an aspect of this disclosure. Device 605 may be an example of an aspect of UE 115 as described herein. Device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. Device 605 may also include a processor. Each of these components may communicate with one another (for example, via one or more buses).

[0123] Receiver 610 may provide means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates). The information may be passed to other components of device 605. Receiver 610 may use a single antenna or a set of multiple antennas.

[0124] Transmitter 615 may provide means for transmitting signals generated by other components of device 605. For example, transmitter 615 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, transmitter 615 may be placed juxtaposed with receiver 610 in the transceiver module. Transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0125] The communication manager 620, receiver 610, transmitter 615, or various combinations thereof or various components thereof may be examples of means for performing various modes of verifying resources associated with iterative linked downlink control channel candidates, as described herein. For example, the communication manager 620, receiver 610, transmitter 615, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0126] In some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (for example, in communications management circuits). The hardware may include a processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as a means for performing, or potentially supporting, the functions described herein. In some examples, a processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (for example, by the processor executing instructions stored in memory).

[0127] As an addition or alternative, in some examples, the communications manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in code executed by a processor (for example, as communications management software or firmware). When implemented in code executed by a processor, the functions of the communications manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor, DSP, central processing unit (CPU), ASIC, FPGA, or any combination thereof or other programmable logic devices (for example, configured as means for performing the functions described herein, or optionally supporting such means).

[0128] In some examples, the communications manager 620 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may be integrated with the receiver 610, the transmitter 615, or both to receive information from the receiver 610 and send information to the transmitter 615, or to receive information and transmit information, or to perform various other operations as described herein.

[0129] The communications manager 620 may support wireless communications in the UE in accordance with the examples disclosed herein. For example, the communications manager 620 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for receiving, at least partially, before the second downlink control channel candidate, or otherwise support this. The communications manager 620 is a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the downlink control information may be configured as a means for decoding, to schedule resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate, or otherwise support this. The communication manager 620 is a means for receiving downlink messages in a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0130] In addition or alternatively, the communications manager 620 may support wireless communications in the UE in accordance with the examples disclosed herein. For example, the communications manager 620 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for receiving, or otherwise support, that is received at least partially before the second downlink control channel candidate. The communications manager 620 is a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the means for decoding may be configured as, or otherwise support, that the downlink control information includes a channel state information request. The communication manager 620 is a means for transmitting a channel status information report to a base station based on the fact that a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate is met, wherein the confirmation rule may be configured, or otherwise support, a means for transmitting that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate.

[0131] By including or configuring the communications manager 620 in accordance with the examples described herein, the device 605 (for example, a processor controlling or optionally coupled to a receiver 610, a transmitter 615, the communications manager 620, or a combination thereof) can support techniques for reducing processing by verifying that the resources do not increase the complexity of the processing, and thus can result in efficient use of communications resources.

[0132] Figure 7 shows a block diagram 700 of a device 705 that supports the verification of resources associated with an iterative-based linked downlink control channel candidate, according to an aspect of this disclosure. Device 705 may be an example of an aspect of device 605 or UE115 as described herein. Device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. Device 705 may also include a processor. Each of these components may communicate with one another (for example, via one or more buses).

[0133] The receiver 710 may provide means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates). The information may be passed to other components of device 705. The receiver 710 may use a single antenna or a set of multiple antennas.

[0134] The transmitter 715 may provide means for transmitting signals generated by other components of device 705. For example, the transmitter 715 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, the transmitter 715 may be placed juxtaposed with the receiver 710 in the transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

[0135] Device 705, or its various components, may be examples of means for performing various modes of verifying resources associated with iterative linked downlink control channel candidates, as described herein. For example, the communications manager 720 may include a PDCCH configuration interface 725, a DCI decoding component 730, a communications interface 735, or any combination thereof. The communications manager 720 may be an example of a mode of communications manager 620 as described herein. In some examples, the communications manager 720, or its various components, may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, a receiver 710, a transmitter 715, or both. For example, the communications manager 720 may be integrated with the receiver 710, the transmitter 715, or both to receive information from the receiver 710, send information to the transmitter 715, or receive information, transmit information, or perform various other operations as described herein.

[0136] The communications manager 720 may support wireless communications in the UE in accordance with the examples disclosed herein. The PDCCH configuration interface 725 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for receiving, or otherwise support, that is received at least partially before the second downlink control channel candidate. The DCI decoding component 730 is a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the downlink control information may be configured as a means for decoding, or otherwise support, that schedules resources of the downlink shared channel in a transmission time interval including at least the second downlink control channel candidate. The communication interface 735 is a means for receiving downlink messages in a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0137] In addition or alternatively, the communications manager 720 may support wireless communications in the UE in accordance with the examples disclosed herein. The PDCCH configuration interface 725 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the means for receiving the first downlink control channel candidate may be configured, or otherwise support it, to receive the first downlink control channel candidate at least partially before the second downlink control channel candidate. The DCI decoding component 730 is a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the means for decoding the downlink control information may be configured, or otherwise support it, to include a channel state information request. The communication interface 735 is a means for transmitting a channel status information report to a base station based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, wherein the confirmation rule may be configured, or otherwise support, a means for transmitting that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate.

[0138] Figure 8 shows a block diagram 800 of a communications manager 820 that supports the verification of resources associated with iterative-based linked downlink control channel candidates, according to an aspect of this disclosure. Communications manager 820 may be an example of an aspect of communications manager 620, communications manager 720, or both thereof, as described herein. Communications manager 820, or various components thereof, may be an example of means for performing various aspects of verifying resources associated with iterative-based linked downlink control channel candidates, as described herein. For example, communications manager 820 may include a PDCCH configuration interface 825, a DCI decoding component 830, a communications interface 835, a PDCCH configuration component 840, a rule-applying component 845, a resource identification component 850, or any combination thereof. Each of these components may communicate with each other directly or indirectly (for example, via one or more buses).

[0139] The communications manager 820 may support wireless communications in the UE in accordance with the examples disclosed herein. The PDCCH configuration interface 825 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for receiving, or otherwise support, that is received at least partially before the second downlink control channel candidate. The DCI decoding component 830 is a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the downlink control information may be configured as a means for decoding, or otherwise support, that schedules resources of the downlink shared channel in a transmission time interval including at least the second downlink control channel candidate. The communication interface 835 is a means for receiving downlink messages in a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, as a means for receiving messages such that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0140] In some examples, the transmission interval is a second transmission interval, and the PDCCH component 840 may be configured, or otherwise support, as a means for determining that a first downlink control channel candidate is located within a first transmission interval preceding a second transmission interval containing the second downlink control channel candidate and resources. In some examples, the transmission interval is a second transmission interval, and the rule-applying component 845 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied by the second downlink control channel candidate being located within a threshold number of symbols in the second transmission interval, based on the determination that a first downlink control channel candidate is located within a first transmission interval.

[0141] In some examples, the PDCCH component 840 is a means for determining that both a first downlink control channel candidate and a second downlink control channel candidate are located within the transmission time interval in which the resources are scheduled, and the confirmation rule may be configured as a means for determining, or otherwise support, that is applicable based on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0142] In some examples, to support verification, the rule-applying component 845 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied by determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a threshold number of symbols in the transmission time interval, based on the determination that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0143] In some examples, to support verification, the rule-applying component 845 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied by at least one of the first and second downlink control channel candidates being located within a threshold number of symbols in the transmission time interval, based on the determination that both the first and second downlink control channel candidates are located within the transmission time interval.

[0144] In some examples, the DCI decoding component 830 may be a means for determining that downlink control information schedules resources on a downlink shared channel using type A resource mapping, and the confirmation rule may be configured as a means for determining, or otherwise support, that downlink control information schedules resources using type A resource mapping, which may be applicable based on that.

[0145] In some examples, to support the reception of instructions, the PDCCH component 840 may be configured, or otherwise support, as a means for receiving instructions via a radio resource control message that a first search space set and a second search space set are linked, and that a first downlink control channel candidate and a second downlink control channel candidate are linked based on the linking of the first search space set and the second search space set.

[0146] In some examples, the threshold symbol count is 3.

[0147] In addition or alternatively, the communications manager 820 may support wireless communications in the UE according to the examples disclosed herein. In some examples, the PDCCH configuration interface 825 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the means for receiving the first downlink control channel candidate may be configured, or otherwise support it, such that the first downlink control channel candidate is received, at least partially, before the second downlink control channel candidate. In some examples, the DCI decoding component 830 is a means for decoding downlink control information from at least one of the first or second downlink control channel candidate, and the means for decoding the downlink control information may be configured, or otherwise support it, such that the downlink control information includes a channel state information request. In some examples, the communication interface 835 is a means for transmitting a channel status information report to a base station based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, a means for transmitting that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate.

[0148] In some examples, the rule-applying component 845 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied, based on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked, by having a reference signal resource positioned after the start symbol of the second downlink control channel candidate.

[0149] In some examples, the rule-applying component 845 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied, based on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked and the first downlink control channel candidate was received before the second downlink control channel candidate, by having a reference signal resource placed after the start symbol only of the first downlink control channel candidate.

[0150] In some examples, to support the reception of instructions, the PDCCH configuration interface 825 may be configured, or otherwise support, as a means for receiving instructions via radio resource control messages that a first search space set and a second search space set are linked, and that a first downlink control channel candidate and a second downlink control channel candidate are linked based on the linking of the first search space set and the second search space set.

[0151] In some examples, the resource identification component 850 may be configured as a means for determining a reference signal resource based on a channel state information request included in the downlink control information, or may otherwise support such determination.

[0152] Figure 9 shows a diagram of a system 900 including a device 905 that supports the verification of resources associated with iterative linked downlink control channel candidates, according to an aspect of the present disclosure. Device 905 may be, or include, an example of a component of device 605, device 705, or UE 115 as described herein. Device 905 may communicate wirelessly with one or more base stations 105, UE 115, or any combination thereof. Device 905 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communications manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, a memory 930, a code 935, and a processor 940. These components may communicate electronically via one or more buses (e.g., bus 945) or may be coupled in some cases (e.g., operably, communicatively, functionally, electronically, electrically).

[0153] The I / O controller 910 may manage input and output signals for device 905. The I / O controller 910 may also manage peripheral devices not integrated into device 905. In some cases, the I / O controller 910 may represent physical connections or ports to external peripheral devices. In some cases, the I / O controller 910 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally or alternatively, the I / O controller 910 may represent, or interact with, a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 910 may be implemented as part of a processor, such as processor 940. In some cases, a user may interact with device 905 via the I / O controller 910 or via hardware components controlled by the I / O controller 910.

[0154] In some cases, device 905 may include a single antenna 925. However, in some other cases, device 905 may have two or more antennas 925, and these antennas may be capable of transmitting or receiving multiple wireless transmissions simultaneously. Transceiver 915 may communicate bidirectionally via one or more antennas 925, a wired link, or a wireless link, as described herein. For example, transceiver 915 may represent a wireless transceiver and communicate bidirectionally with another wireless transceiver. Transceiver 915 may also include a modem for modulating packets, providing the modulated packets to one or more antennas 925 for transmission, and demodulating packets received from one or more antennas 925. Transceiver 915, or transceiver 915 and one or more antennas 925, may be an example of transmitter 615, transmitter 715, receiver 610, receiver 710, or any combination thereof or their components, as described herein.

[0155] Memory 930 may include random access memory (RAM) and read-only memory (ROM). Memory 930 may store computer-readable, computer-executable code 935, which, when executed by the processor 940, causes device 905 to perform various functions described herein. Code 935 may be stored in a non-temporary computer-readable medium, such as system memory or another type of memory. In some cases, code 935 may not be directly executable by the processor 940, but (for example, when compiled and executed) may cause the computer to perform the functions described herein. In some cases, memory 930 may include a basic I / O system (BIOS) that can control basic hardware or software operations, such as interaction with peripheral components or peripheral devices.

[0156] The processor 940 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in memory (e.g., memory 930) to cause device 905 to perform various functions (e.g., functions or tasks that support the verification of resources associated with iteratively linked downlink control channel candidates). For example, device 905 or components of device 905 may include the processor 940 and memory 930 coupled to the processor 940, and the processor 940 and memory 930 may be configured to perform various functions described herein.

[0157] The communications manager 920 may support wireless communications in the UE in accordance with the examples disclosed herein. For example, the communications manager 920 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for receiving, at least partially, before the second downlink control channel candidate, or otherwise support this. The communications manager 920 is a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the downlink control information may be configured as a means for decoding, to schedule resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate, or otherwise support this. The communication manager 920 is a means for receiving downlink messages in a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0158] In addition or alternatively, the communications manager 920 may support wireless communications in the UE in accordance with the examples disclosed herein. For example, the communications manager 920 is a means for receiving instructions from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for receiving, or otherwise support, that is received at least partially before the second downlink control channel candidate. The communications manager 920 is a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, and the means for decoding may be configured as, or otherwise support, that the downlink control information includes a channel state information request. The communication manager 920 is a means for transmitting a channel status information report to a base station based on the fact that a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate is met, wherein the confirmation rule may be configured, or otherwise support, a means for transmitting that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate.

[0159] By including or configuring a communications manager 920 in accordance with the examples described herein, device 905 can support techniques for improving communications reliability by verifying that resources are processable by devices such as UEs, and thus may result in more efficient use of communications resources and processing power.

[0160] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the transceiver 915, one or more antennas 925, or a combination thereof. Although the communications manager 920 is shown as a separate component, in some examples, one or more functions described with respect to the communications manager 920 may be supported or performed by the processor 940, memory 930, code 935, or a combination thereof. For example, code 935 may include instructions that can be executed by the processor 940 to cause the device 905 to perform various aspects of verifying resources associated with the iterative-based linked downlink control channel candidate described herein, or the processor 940 and memory 930 may be configured to perform or support such operations.

[0161] Figure 10 shows a block diagram 1000 of a device 1005 that supports the verification of resources associated with iterative-based linked downlink control channel candidates, according to an aspect of this disclosure. Device 1005 may be an example of an embodiment of a base station 105 as described herein. Device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. Device 1005 may also include a processor. Each of these components may communicate with one another (for example, via one or more buses).

[0162] Receiver 1010 may provide means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates). The information may be passed to other components of device 1005. Receiver 1010 may use a single antenna or a set of multiple antennas.

[0163] The transmitter 1015 may provide means for transmitting signals generated by other components of device 1005. For example, the transmitter 1015 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, the transmitter 1015 may be placed alongside the receiver 1010 in the transceiver module. The transmitter 1015 may utilize a single antenna or a set of multiple antennas.

[0164] The communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof or various components thereof may be examples of means for performing various modes of verifying resources associated with iterative linked downlink control channel candidates, as described herein. For example, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0165] In some examples, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be implemented in hardware (for example, in a communications management circuit). The hardware may include a processor, a DSP, an ASIC, an FPGA or other programmable logic device, individual gates or transistor logic, individual hardware components, or any combination thereof configured as a means for performing, or possibly supporting, the functions described herein. In some examples, a processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (for example, by the processor executing instructions stored in memory).

[0166] As an addition or alternative, in some examples, the communications manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be implemented in code executed by a processor (for example, as communications management software or firmware). When implemented in code executed by a processor, the functions of the communications manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination thereof or other programmable logic devices (for example, configured as means for performing the functions described herein, or optionally supporting such means).

[0167] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may be integrated with the receiver 1010, the transmitter 1015, or both to receive information from the receiver 1010, send information to the transmitter 1015, or receive information, transmit information, or perform various other operations as described herein.

[0168] The communication manager 1020 may support wireless communication at a base station in accordance with the examples disclosed herein. For example, the communication manager 1020 may be a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate may be configured as a means for transmitting, or otherwise support, that is transmitted, at least partially, before the second downlink control channel candidate. The communication manager 1020 may be configured as a means for transmitting downlink control information to the UE via the first and second downlink control channel candidates, which schedules resources on a downlink shared channel for a transmission time interval including at least the second downlink control channel candidate, or may otherwise support. The communication manager 1020 is a means for sending downlink messages to a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, as a means for sending, that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0169] In addition or alternatively, the communications manager 1020 may support wireless communications at a base station in accordance with the examples disclosed herein. For example, the communications manager 1020 may be a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate may be configured as a means for transmitting, or otherwise support, a means for transmitting, at least partially, before the second downlink control channel candidate. The communications manager 1020 may be configured as a means for transmitting downlink control information, including a channel status information request, to the UE via the first and second downlink control channel candidates, or otherwise support, a means for transmitting. The communication manager 1020 is a means for receiving a channel status information report from the UE based on the fact that a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate is met, the confirmation rule may be configured for receiving, or otherwise support, the fact that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate.

[0170] By including or configuring the communications manager 1020 in accordance with the examples described herein, the device 1005 (for example, a processor controlling or optionally coupled to the receiver 1010, transmitter 1015, communications manager 1020, or a combination thereof) can support techniques for reducing processing by verifying that the resources do not increase the complexity of processing, and thus can result in efficient use of communications resources.

[0171] Figure 11 shows a block diagram 1100 of a device 1105 that supports the verification of resources associated with iterative-based linked downlink control channel candidates, according to an aspect of this disclosure. Device 1105 may be an example of an aspect of device 1005 or base station 105 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 one another (for example, via one or more buses).

[0172] Receiver 1110 may provide means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates). The information may be passed to other components of device 1105. Receiver 1110 may use a single antenna or a set of multiple antennas.

[0173] The transmitter 1115 may provide means for transmitting signals generated by other components of device 1105. For example, the transmitter 1115 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to the verification of resources associated with iterative-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, the transmitter 1115 may be placed alongside the receiver 1110 in the transceiver module. The transmitter 1115 may utilize a single antenna or a set of multiple antennas.

[0174] Device 1105, or its various components, may be examples of means for performing various modes of verifying resources associated with iterative linked downlink control channel candidates, as described herein. For example, the communications manager 1120 may include the PDCCH configuration interface 1125, the DCI interface 1130, the communications interface 1135, or any combination thereof. The communications manager 1120 may be an example of a mode of communications manager 1020 as described herein. In some examples, the communications manager 1120, or its various components, may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the receiver 1110, the transmitter 1115, or both. For example, the communications manager 1120 may be integrated with the receiver 1110, the transmitter 1115, or both to receive information from the receiver 1110, send information to the transmitter 1115, or receive information, transmit information, or perform various other operations as described herein.

[0175] The communications manager 1120 may support wireless communications at a base station in accordance with the examples disclosed herein. The PDCCH configuration interface 1125 is a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for transmitting, or otherwise support, that is transmitted, at least partially, before the second downlink control channel candidate. The DCI interface 1130 may be configured as a means for transmitting downlink control information to the UE via the first and second downlink control channel candidates, which schedules resources on a downlink shared channel for a transmission time interval including at least the second downlink control channel candidate, or may otherwise support. The communication interface 1135 is a means for sending downlink messages in a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, as a means for sending, that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0176] As an addition or alternative, the communications manager 1120 may support wireless communications at the base station in accordance with the examples disclosed herein. The PDCCH configuration interface 1125 is a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for transmitting, or otherwise support, that is transmitted, at least partially, before the second downlink control channel candidate. The DCI interface 1130 may be configured as a means for transmitting downlink control information, including a channel state information request, to the UE via the first downlink control channel candidate and the second downlink control channel candidate, or otherwise support, that. The communication interface 1135 is a means for receiving a channel status information report from the UE based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, a means for receiving, a reference signal resource associated with the channel status information request being located at least after the start symbol of the first downlink control channel candidate.

[0177] Figure 12 shows a block diagram 1200 of a communications manager 1220 that supports the verification of resources associated with iterative-based linked downlink control channel candidates, according to an aspect of this disclosure. Communications manager 1220 may be an example of an aspect of communications manager 1020, communications manager 1120, or both thereof, as described herein. Communications manager 1220, or various components thereof, may be an example of means for performing various aspects of verifying resources associated with iterative-based linked downlink control channel candidates, as described herein. For example, communications manager 1220 may include a PDCCH configuration interface 1225, a DCI interface 1230, a communications interface 1235, a PDCCH configuration component 1240, a rule-applying component 1245, or any combination thereof. Each of these components may communicate with each other directly or indirectly (for example, via one or more buses).

[0178] The communications manager 1220 may support wireless communications at a base station in accordance with the examples disclosed herein. The PDCCH configuration interface 1225 is a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for transmitting, or otherwise support, that is transmitted, at least partially, before the second downlink control channel candidate. The DCI interface 1230 may be configured as a means for transmitting downlink control information to the UE via the first and second downlink control channel candidates, which schedules resources on a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate, or may otherwise support. The communication interface 1235 is a means for sending downlink messages in a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, as a means for sending, that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0179] In some examples, the transmission interval is a second transmission interval, and the PDCCH component 1240 may be configured, or otherwise support, as a means for determining that a first downlink control channel candidate is located within a first transmission interval preceding a second transmission interval containing the second downlink control channel candidate and resources. In some examples, the transmission interval is a second transmission interval, and the rule-applying component 1245 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied by the second downlink control channel candidate being located within a threshold number of symbols in the second transmission interval, based on the determination that a first downlink control channel candidate is located within a first transmission interval.

[0180] In some examples, the PDCCH component 1240 is a means for determining that both a first downlink control channel candidate and a second downlink control channel candidate are located within the transmission time interval in which the resources are scheduled, and the confirmation rule may be configured as a means for determining, or otherwise support, that is applicable based on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0181] In some examples, to support verification, the rule-applying component 1245 may be configured as a means to verify that a confirmation rule is satisfied by determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a threshold number of symbols in the transmission time interval, based on the determination that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval, or may otherwise support this.

[0182] In some examples, to support verification, the rule-applying component 1245 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied by at least one of the first and second downlink control channel candidates being located within a threshold number of symbols of the transmission time interval, based on the determination that both the first and second downlink control channel candidates are located within the transmission time interval.

[0183] In some examples, to support the transmission of downlink control information, the DCI interface 1230 may be a means for transmitting downlink control information that schedules resources on a downlink shared channel using type A resource mapping, and confirmation rules may be configured as a means for transmitting, or otherwise support, that are applicable based on the downlink control information scheduling resources using type A resource mapping.

[0184] In some examples, to support the transmission of instructions, the PDCCH configuration interface 1225 may be configured, or otherwise support, as a means for transmitting instructions via radio resource control messages that a first search space set and a second search space set are linked, and that a first downlink control channel candidate and a second downlink control channel candidate are linked based on the linking of the first search space set and the second search space set.

[0185] In some examples, the threshold symbol count is 3.

[0186] In addition or alternatively, the communications manager 1220 may support wireless communications at the base station in accordance with the examples disclosed herein. In some examples, the PDCCH configuration interface 1225 is a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate may be configured as a means for transmitting, or otherwise support, that is transmitted, at least partially, before the second downlink control channel candidate. In some examples, the DCI interface 1230 may be configured as a means for transmitting downlink control information, including a channel state information request, to the UE via the first and second downlink control channel candidates, or otherwise support, that. In some examples, the communication interface 1235 is a means for receiving channel status information reports from the UE based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured for receiving, or otherwise support, a reference signal resource associated with the channel status information request being located at least after the start symbol of the first downlink control channel candidate.

[0187] In some examples, the rule-applying component 1245 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied, based on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked, by having a reference signal resource positioned after the start symbol of the second downlink control channel candidate.

[0188] In some examples, the rule-applying component 1245 may be configured, or otherwise support, as a means for verifying that a confirmation rule is satisfied by having a reference signal resource positioned only after the start symbol of the first downlink control channel candidate, based on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked and the first downlink control channel candidate was transmitted before the second downlink control channel candidate.

[0189] In some examples, to support the transmission of instructions, the PDCCH configuration interface 1225 may be configured, or otherwise support, as a means for transmitting instructions via radio resource control messages that a first search space set and a second search space set are linked, and that a first downlink control channel candidate and a second downlink control channel candidate are linked based on the linking of the first search space set and the second search space set.

[0190] In some examples, the DCI interface 1230 may be configured, or otherwise support, a means for indicating a reference signal resource based on a channel state information request included in the downlink control information.

[0191] Figure 13 shows a diagram of system 1300 including a device 1305 that supports the verification of resources associated with iterative linked downlink control channel candidates, according to an aspect of the present disclosure. Device 1305 may be an example of, or include, a component of, device 1005, device 1105, or base station 105 as described herein. Device 1305 may communicate wirelessly with one or more base stations 105, UE 115, or any combination thereof. Device 1305 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communications manager 1320, a network communications manager 1310, a transceiver 1315, an antenna 1325, a memory 1330, a code 1335, a processor 1340, and an inter-station communications manager 1345. These components may communicate electronically or optionally (e.g., operably, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1350).

[0192] The network communication manager 1310 may manage communication with the core network 130 (for example, via one or more wired backhaul links). For example, the network communication manager 1310 may manage the transfer of data communications for one or more client devices such as UE 115.

[0193] In some cases, device 1305 may include a single antenna 1325. However, in some other cases, device 1305 may have two or more antennas 1325, and these antennas may be capable of transmitting or receiving multiple wireless transmissions simultaneously. Transceiver 1315 may communicate bidirectionally via one or more antennas 1325, a wired link, or a wireless link, as described herein. For example, transceiver 1315 may represent a wireless transceiver and communicate bidirectionally with another wireless transceiver. Transceiver 1315 may also include a modem for modulating packets, providing the modulated packets to one or more antennas 1325 for transmission, and demodulating packets received from one or more antennas 1325. Transceiver 1315, or transceiver 1315 and one or more antennas 1325, may be examples of transmitters 1015, transmitters 1115, receivers 1010, receivers 1110, or any combination thereof or their components, as described herein.

[0194] Memory 1330 may include RAM and ROM. Memory 1330 may store computer-readable, computer-executable code 1335, which, when executed by processor 1340, causes device 1305 to perform various functions described herein. Code 1335 may be stored in a non-temporary computer-readable medium such as system memory or another type of memory. In some cases, code 1335 may not be directly executable by processor 1340, but (for example, when compiled and executed) may cause the computer to perform the functions described herein. In some cases, memory 1330 may include a BIOS that can control basic hardware or software operations, in particular, such as interaction with peripheral components or devices.

[0195] The processor 1340 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 1340 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1340. The processor 1340 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1330) to cause device 1305 to perform various functions (e.g., functions or tasks that support the verification of resources associated with iteratively linked downlink control channel candidates). For example, device 1305 or components of device 1305 may include the processor 1340 and memory 1330 coupled to the processor 1340, and the processor 1340 and memory 1330 may be configured to perform various functions described herein.

[0196] The inter-station communication manager 1345 may manage communication with other base stations 105 and may include a controller or scheduler for coordinating with other base stations 105 to control communication with the UE 115. For example, the inter-station communication manager 1345 may coordinate scheduling for transmissions to the UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communication manager 1345 may provide an X2 interface within the LTE / LTE-A wireless communication network technology for communication between base stations 105.

[0197] The communications manager 1320 may support wireless communications at a base station in accordance with the examples disclosed herein. For example, the communications manager 1320 may be a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate may be configured, or otherwise support, a means for transmitting, at least partially, before the second downlink control channel candidate. The communications manager 1320 may be configured, or otherwise support, a means for transmitting downlink control information to the UE via the first and second downlink control channel candidates, which schedules resources on a downlink shared channel for a transmission time interval including at least the second downlink control channel candidate. The communication manager 1320 is a means for sending downlink messages to a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, as a means for sending, that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0198] In addition or alternatively, the communications manager 1320 may support wireless communications at a base station in accordance with the examples disclosed herein. For example, the communications manager 1320 may be a means for transmitting to the UE an instruction that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate may be configured, or otherwise support, a means for transmitting, at least partially, before the second downlink control channel candidate. The communications manager 1320 may be configured, or otherwise support, a means for transmitting downlink control information, including a channel status information request, to the UE via the first and second downlink control channel candidates. The communication manager 1320 is a means for receiving a channel status information report from the UE based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may be configured, or otherwise support, a means for receiving, a reference signal resource associated with the channel status information request being located at least after the start symbol of the first downlink control channel candidate.

[0199] By including or configuring a communications manager 1320 according to the examples described herein, device 1305 can support techniques for improving communications reliability by verifying that resources are processable by devices such as UEs, and thus can result in more efficient use of communications resources and processing power.

[0200] In some examples, the communications manager 1320 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the transceiver 1315, one or more antennas 1325, or a combination thereof. Although the communications manager 1320 is shown as a separate component, in some examples, one or more functions described with respect to the communications manager 1320 may be supported or performed by the processor 1340, memory 1330, code 1335, or a combination thereof. For example, code 1335 may include instructions that can be executed by the processor 1340 to cause the device 1305 to perform various aspects of verifying resources associated with the iterative-based linked downlink control channel candidate described herein, or the processor 1340 and memory 1330 may be configured to perform or support such operations.

[0201] Figure 14 shows a flowchart illustrating a method 1400 that supports verification of resources associated with iterative linked downlink control channel candidates, according to aspects of this disclosure. The operation of method 1400 may be performed by a UE or its components as described herein. For example, the operation of method 1400 may be performed by UE 115, as described with reference to Figures 1 to 9. In some examples, the UE may execute a set of instructions to control a functional element of the UE to perform the functions described. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described.

[0202] In 1405, the method may include the step of receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate is received, at least partially, before the second downlink control channel candidate. The operation of 1405 may be performed according to the examples disclosed herein. In some examples, the operation of 1405 may be performed by a PDCCH configuration interface 825, as described with reference to Figure 8.

[0203] In 1410, the method may include the step of decoding downlink control information from at least one of a first downlink control channel candidate or a second downlink control channel candidate, wherein the downlink control information schedules resources of the downlink shared channel in a transmission time interval including at least the second downlink control channel candidate. The operation of 1410 may be performed according to the examples disclosed herein. In some examples, the operation of 1410 may be performed by a DCI decoding component 830 as described with reference to Figure 8.

[0204] In 1415, the method includes the step of receiving a downlink message in a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may include the step of receiving that at least one of the first or second downlink control channel candidates is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled. The operation of 1415 may be performed according to the examples disclosed herein. In some examples, the operation of 1415 may be performed by a communication interface 835, as described with reference to Figure 8.

[0205] Figure 15 shows a flowchart illustrating method 1500, which supports verification of resources associated with iterative linked downlink control channel candidates, according to aspects of this disclosure. The operation of method 1500 may be implemented by a UE or its components, as described herein. For example, the operation of method 1500 may be performed by UE 115, as described with reference to Figures 1 to 9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the functions described. Additional or alternative, the UE may perform aspects of the functions described using dedicated hardware.

[0206] In 1505, the method may include receiving a signal from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate is received, at least partially, before the second downlink control channel candidate. The operation of 1505 may be performed according to the examples disclosed herein. In some examples, the operation of 1505 may be performed by a PDCCH configuration interface 825, as described with reference to Figure 8.

[0207] In 1510, the method includes the step of decoding downlink control information from at least one of a first downlink control channel candidate or a second downlink control channel candidate, wherein the downlink control information includes a channel state information request. The operation of 1510 may be performed according to the examples disclosed herein. In some examples, the operation of 1510 may be performed by a DCI decoding component 830 as described with reference to Figure 8.

[0208] In 1515, the method includes the step of transmitting a channel status information report to a base station based on the fact that a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate is satisfied, wherein the confirmation rule is that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate. The operation of 1515 may be performed according to the examples disclosed herein. In some examples, the operation of 1515 may be performed by a communication interface 835, as described with reference to Figure 8.

[0209] Figure 16 shows a flowchart illustrating a method 1600 that supports the verification of resources associated with an iterative-based linked downlink control channel candidate, according to aspects of this disclosure. The operation of method 1600 may be implemented by a base station or its components as described herein. For example, the operation of method 1600 may be performed by base station 105, as described with reference to Figures 1-5 and 10-13. In some examples, the base station may execute a set of instructions to control the base station's functional elements to perform the functions described. In addition or alternatively, the base station may perform aspects of the functions described using dedicated hardware.

[0210] In 1605, the method may include the step of sending an instruction to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being sent, at least partially, before the second downlink control channel candidate. The operation of 1605 may be performed according to the examples disclosed herein. In some examples, the operation of 1605 may be performed by a PDCCH configuration interface 1225, as described with reference to Figure 12.

[0211] In 1610, the method may include the step of transmitting downlink control information to the UE via the first and second downlink control channel candidates, which schedules resources on a downlink shared channel for a transmission time interval including at least a second downlink control channel candidate. The operation of 1610 may be performed according to the examples disclosed herein. In some examples, the operation of 1610 may be performed by a DCI interface 1230, as described with reference to Figure 12.

[0212] In 1615, the method includes the step of sending a downlink message on a resource based on the satisfaction of a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate, the confirmation rule may include the step of sending that at least one of the first or second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval on which the resource is scheduled. The operation of 1615 may be performed according to the examples disclosed herein. In some examples, the operation of 1615 may be performed by a communication interface 1235 as described with reference to Figure 12.

[0213] Figure 17 shows a flowchart illustrating a method 1700 that supports the verification of resources associated with an iterative-based linked downlink control channel candidate, according to aspects of this disclosure. The operation of method 1700 may be implemented by a base station or its components, as described herein. For example, the operation of method 1700 may be performed by a base station 105, as described with reference to Figures 1–5 and 10–13. In some examples, the base station may execute a set of instructions to control the base station's functional elements to perform the functions described. In addition or alternatively, the base station may perform aspects of the functions described using dedicated hardware.

[0214] In 1705, the method may include the step of sending a message to the UE indicating that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being sent, at least partially, before the second downlink control channel candidate. The operation of 1705 may be performed according to the examples disclosed herein. In some examples, the operation of 1705 may be performed by a PDCCH configuration interface 1225, as described with reference to Figure 12.

[0215] In 1710, the method may include the step of sending downlink control information, including a channel status information request, to the UE via a first downlink control channel candidate and a second downlink control channel candidate. The operation of 1710 may be performed according to the examples disclosed herein. In some examples, the operation of 1710 may be performed by a DCI interface 1230, as described with reference to Figure 12.

[0216] In 1715, the method includes receiving a channel status information report from the UE based on the fact that a confirmation rule associated with the linking of a first downlink control channel candidate and a second downlink control channel candidate is met, the confirmation rule being that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate. The operation of 1715 may be performed according to the examples disclosed herein. In some examples, the operation of 1715 may be performed by a communication interface 1235, as described with reference to Figure 12.

[0217] The following provides an overview of the aspects of this disclosure.

[0218] Embodiment 1: A method for wireless communication in a UE, comprising the steps of: receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, which schedules a resource for a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate; and receiving a downlink message on the resource, at least partially based on the satisfaction of a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate, wherein the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0219] Embodiment 2: The method according to Embodiment 1, wherein the transmission interval is a second transmission interval, and the method further comprises the steps of determining that a first downlink control channel candidate is located within a first transmission interval preceding a second transmission interval containing a second downlink control channel candidate and resources, and verifying, at least in part, that a confirmation rule is satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission interval.

[0220] Embodiment 3: The method according to Embodiment 1, further comprising the step of determining that both a first downlink control channel candidate and a second downlink control channel candidate are located within a transmission time interval in which the resources are scheduled, wherein the confirmation rule is applicable at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0221] Embodiment 4: The method according to Embodiment 3, wherein the verification step includes verifying that a confirmation rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols for the transmission time interval, at least on the basis of determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0222] Embodiment 5: The apparatus according to any one of Embodiments 3 to 4, wherein the verification step includes verifying that a confirmation rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval, at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0223] Embodiment 6: The method according to any one of Embodiments 1 to 5, further comprising the step of determining that downlink control information will schedule resources on a downlink shared channel using a type A resource mapping, wherein the confirmation rule is applicable at least in part on the basis that downlink control information will schedule resources using a type A resource mapping.

[0224] Embodiment 7: The method according to any one of Embodiments 1 to 6, the step of receiving an instruction, the step of receiving an instruction via a radio resource control message that a first search space set and a second search space set are linked, and that a first downlink control channel candidate and a second downlink control channel candidate are linked at least in part on the basis that the first search space set and the second search space set are linked.

[0225] Embodiment 8: The method according to any one of Embodiments 1 to 7, wherein the number of threshold symbols is 3.

[0226] Embodiment 9: A method for wireless communication in a UE, comprising the steps of: receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, and the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, wherein the downlink control information includes a channel state information request; and transmitting a channel state information report to the base station, at least partially based on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is satisfied, wherein the confirmation rule is that a reference signal resource associated with the channel state information request is located at least after the start symbol of the first downlink control channel candidate.

[0227] Embodiment 10: The method according to Embodiment 9, further comprising the step of verifying that a confirmation rule is satisfied by a reference signal resource being located after the start symbol of the second downlink control channel candidate, at least in part on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked.

[0228] Embodiment 11: The method according to Embodiment 9, further comprising the step of verifying that a confirmation rule is satisfied by a reference signal resource being placed after the start symbol only of the first downlink control channel candidate, at least on the basis that a first downlink control channel candidate and a second downlink control channel candidate are linked and the first downlink control channel candidate was received before the second downlink control channel candidate.

[0229] Embodiment 12: The method according to any one of Embodiments 9 to 11, comprising the step of receiving an instruction, which is an instruction via a radio resource control message that a first search space set and a second search space set are linked, and that a first downlink control channel candidate and a second downlink control channel candidate are linked at least in part on the basis that the first search space set and the second search space set are linked.

[0230] Embodiment 13: The apparatus according to any one of Embodiments 9 to 12, further comprising the step of determining a reference signal resource based at least in part on a channel state information request contained in downlink control information.

[0231] Embodiment 14: A method for wireless communication at a base station, comprising the steps of: transmitting an instruction to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate is transmitted at least partially before the second downlink control channel candidate; transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate to schedule a resource on a downlink shared channel for a transmission time interval including at least the second downlink control channel candidate; and transmitting a downlink message on a resource, at least partially based on the satisfaction of a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate, wherein the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled.

[0232] Embodiment 15: The method of Embodiment 14, wherein the transmission interval is a second transmission interval, and the method further comprises the steps of determining that a first downlink control channel candidate is located within a first transmission interval preceding a second transmission interval containing the second downlink control channel candidate and resources, and verifying that a confirmation rule is satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission interval, at least in part based on the determination that the first downlink control channel candidate is located within the first transmission interval.

[0233] Embodiment 16: The method of Embodiment 14, further comprising the step of determining that both a first downlink control channel candidate and a second downlink control channel candidate are located within a transmission time interval in which the resources are scheduled, wherein the confirmation rule is applicable at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0234] Embodiment 17: The method of Embodiment 16, wherein the verification step includes verifying that a confirmation rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols for the transmission time interval, at least on the basis of determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0235] Embodiment 18: The method according to any one of Embodiments 16 to 17, wherein the verification step includes verifying that a confirmation rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols for the transmission time interval, at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval.

[0236] Embodiment 19: The method according to any one of Embodiments 14 to 18, wherein the step of transmitting downlink control information is a step of transmitting downlink control information that schedules resources on a downlink shared channel using a type A resource mapping, and the confirmation rule is applicable at least in part on the downlink control information scheduling resources using a type A resource mapping.

[0237] Embodiment 20: The method according to any one of Embodiments 14 to 19, comprising the step of transmitting an instruction via a radio resource control message that a first search space set and a second search space set are linked, wherein a first downlink control channel candidate and a second downlink control channel candidate are linked at least in part on the basis that the first search space set and the second search space set are linked.

[0238] Embodiment 21: The method according to any one of Embodiments 14 to 20, wherein the number of threshold symbols is 3.

[0239] Embodiment 22: A method for wireless communication at a base station, comprising the steps of: transmitting an instruction to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted at least partially before the second downlink control channel candidate; transmitting downlink control information, including a channel status information request, to the UE via the first downlink control channel candidate and the second downlink control channel candidate; and receiving a channel status information report from the UE, at least partially based on the satisfaction of a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate, the confirmation rule being that a reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate.

[0240] Embodiment 23: The method according to Embodiment 22, further comprising the step of verifying that a confirmation rule is satisfied by a reference signal resource being located after the start symbol of the second downlink control channel candidate, at least in part on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked.

[0241] Embodiment 24: The method according to Embodiment 22, further comprising the step of verifying that a confirmation rule is satisfied by a reference signal resource being placed after the start symbol only of the first downlink control channel candidate, at least in part on the fact that a first downlink control channel candidate and a second downlink control channel candidate are linked and the first downlink control channel candidate was transmitted before the second downlink control channel candidate.

[0242] Embodiment 25: The method according to any one of Embodiments 22 to 24, comprising the step of transmitting an instruction via a radio resource control message that a first search space set and a second search space set are linked, wherein a first downlink control channel candidate and a second downlink control channel candidate are linked at least in part on the basis that the first search space set and the second search space set are linked.

[0243] Embodiment 26: The method according to any one of Embodiments 22 to 25, further comprising the step of indicating a reference signal resource based at least in part on a channel state information request contained in downlink control information.

[0244] Embodiment 27: A device for wireless communication in a UE, comprising a processor, a memory coupled to the processor, and instructions stored in the memory that can be executed by the processor to cause the device to perform any of Embodiments 1 to 8.

[0245] Embodiment 28: An apparatus for wireless communication in a UE, comprising at least one means for carrying out any of the methods of Embodiments 1 to 8.

[0246] Embodiment 29: A non-temporary computer-readable medium for storing code for wireless communication in a UE, wherein the code includes instructions that can be executed by a processor to perform any of Embodiments 1 to 8.

[0247] Embodiment 30: A device for wireless communication in a UE, comprising a processor, a memory coupled to the processor, and instructions stored in the memory that can be executed by the processor to cause the device to perform any of the methods in Embodiments 9 to 13.

[0248] Embodiment 31: Apparatus for wireless communication in a UE, comprising at least one means for performing any of the methods of Embodiments 9 to 13.

[0249] Embodiment 32: A non-temporary computer-readable medium for storing code for wireless communication in a UE, wherein the code comprises instructions that can be executed by a processor to perform any of the methods of Embodiments 9 to 13.

[0250] Embodiment 33: A device for wireless communication at a base station, comprising a processor, a memory coupled to the processor, and instructions stored in the memory that can be executed by the processor to cause the device to perform any of the methods in Embodiments 14 to 21.

[0251] Embodiment 34: An apparatus for wireless communication at a base station, comprising at least one means for performing any of the methods of Embodiments 14 to 21.

[0252] Embodiment 35: A non-temporary computer-readable medium for storing code for wireless communication at a base station, wherein the code comprises instructions that can be executed by a processor to perform any of the methods of Embodiments 14 to 21.

[0253] Embodiment 36: A device for wireless communication at a base station, comprising a processor, a memory coupled to the processor, and instructions stored in the memory that can be executed by the processor to cause the device to perform any of the methods in Embodiments 22 to 26.

[0254] Embodiment 37: An apparatus for wireless communication at a base station, comprising at least one means for performing any of the methods of Embodiments 22 to 26.

[0255] Embodiment 38: A non-temporary computer-readable medium for storing code for wireless communication at a base station, wherein the code comprises instructions that can be executed by a processor to perform any of the methods in Embodiments 22 to 26.

[0256] It should be noted that the methods described herein describe possible implementations, that the operations and steps may be reconfigured or otherwise modified, and that other implementations are possible. Furthermore, two or more embodiments of these methods may be combined.

[0257] While embodiments of LTE, LTE-A, LTE-A Pro, or NR systems may be described as examples, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used extensively in the description, the techniques described herein are applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR. For example, the techniques described may be applicable to various 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 wireless technologies not expressly described herein.

[0258] The information and signals described herein can be represented using a wide variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout this description may be represented by voltage, electric current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0259] The various exemplary blocks and components described in this disclosure may be implemented or run using general-purpose processors, DSPs, ASICs, CPUs, FPGAs or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but alternatively, a processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working with a DSP core, or any other such configuration).

[0260] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. When implemented in software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the accompanying claims. For example, due to the nature of the software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented in different physical locations.

[0261] Computer-readable media include both non-temporary computer storage media and communication media, including any media that facilitates the transfer of computer programs from one location to another. Non-temporary storage media can be any available media that can be accessed by a general-purpose or dedicated computer. Examples, rather than limitations, of non-temporary computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-temporary media that can be used to carry or store desired program code means in the form of instructions or data structures, and can be accessed by a general-purpose or dedicated computer or general-purpose or dedicated processor. Any connection is also 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 in the definition of computer-readable media. As used herein, the terms "disk" and "disc" include CDs, laserdiscs, optical discs, digital multipurpose discs (DVDs), floppy disks, and Blu-ray® discs, where a disk typically reproduces data magnetically and a disc reproduces data optically using a laser. Combinations of these terms are also included within the scope of computer-readable media.

[0262] When used herein, including within the claims, “or” as used in an enumeration of items (for example, an enumeration of items beginning with a phrase such as “at least one of” or “one or more of”) indicates an inclusive enumeration, such as the enumeration “at least one of A, B, or C” meaning A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, the phrase “based on” as used herein should not be construed as a reference to a closed set of conditions. For example, an exemplary step described as “based on condition A” may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, the phrase “based on” as used herein should be construed in the same way as the phrase “at least partially based on.”

[0263] The term "decide" or "make a decision" encompasses a wide variety of actions, and therefore "making a decision" can include calculating, calculating, processing, deriving, investigating, looking up (e.g., through a lookup in a table, database, or another data structure), confirming, etc. It can also include receiving (e.g., receiving information), accessing (e.g., accessing data in memory), etc. Furthermore, "making a decision" can include resolving, selecting, choosing, establishing, and other similar actions.

[0264] In the attached diagrams, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes similar components. Where only the first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of the second reference label or any other subsequent reference labels.

[0265] The descriptions provided herein with respect to the accompanying drawings describe exemplary configurations and do not necessarily represent all examples that may be implemented or that fall within the scope of the claims. The term “exemplary” as used herein means “acting as an example, case, or illustration,” and does not mean “preferred” or “advantageous over other examples.” Detailed descriptions include specific details to facilitate understanding of the described techniques. However, these techniques may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the examples described.

[0266] The descriptions herein are provided to enable those skilled in the art to create or use this disclosure. Various modifications of this disclosure will become apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Accordingly, this disclosure should be given the broadest scope that is consistent with the principles and novel features disclosed herein, and is not limited to the examples and designs described herein. [Explanation of Symbols]

[0267] 100 Wireless Communication Systems 105 Base station 110 coverage area 115 UE 120 backhaul links 125 Communication Link 130 Core Network 135 Device-to-Device (D2D) Communication Links 140 Access Network Entities 145 Access Network Transmitting Entities 150 IP services 200 Wireless Communication Systems 205 Communications 210 PDCCH 215 PDSCH 220 DMRS 225 Symbols 230 CSI-RS Resources 235 DCI 240 First Search Space Set 245 Second Search Space Set 250 Slot 305-a First TTI 305-b Second TTI 310-a First PDCCH Candidate 310-b Second PDCCH Candidate 315 PDSCH 320-a First PDCCH Candidate 320-b Second PDCCH Candidate 325 TTI 330 PDSCH 410-a First PDCCH Candidate 410-b Second PDCCH Candidate 415 CSI-RS Resources 605 Device 610 Receiver 615 Transmitter 620 Communication Manager 705 Device 710 Receiver 715 Transmitter 720 Communication Manager 725 PDCCH Configuration Interface 730 DCI Decoding Component 735 Communication Interface 820 Communication Manager 825 PDCCH Configuration Interface 830 DCI Decoding Component 835 Communication Interface 840 PDCCH Configuration Component 845 Rule Application Component 850 Resource Identification Component 900 System 905 Device 910 Input / Output (I / O) Controller 915 Transceiver 920 Communication Manager 925 Antenna 930 memory 935 Code 940 processor 945 Bus 1005 devices 1010 Receiver 1015 Transmitter 1020 Communications Manager 1105 devices 1110 Receiver 1115 Transmitter 1120 Communications Manager 1125 PDCCH Configuration Interface 1130 DCI Interface 1135 Communication Interface 1220 Communications Manager 1225 PDCCH Configuration Interface 1230 DCI Interface 1235 Communication Interface 1240 PDCCH Components 1245 Rule-Applying Components 1305 devices 1310 Network Communications Manager 1315 Transceiver 1320 Communications Manager 1325 Antenna 1330 memory 1335 Code 1340 processor 1345 Inter-station communications manager 1350 Bus 1400 methods 1500 ways 1600 methods 1700 methods

Claims

1. A method for wireless communication in user equipment (UE), Steps include receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; The steps include decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, wherein the downlink control information schedules resources of the downlink shared channel during a transmission time interval including at least the second downlink control channel candidate, The steps include receiving a downlink message in the resource, at least in part on the satisfaction of a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate, wherein the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled to receive; A method that includes this.

2. A step of determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval in which the resource is scheduled, wherein the confirmation rule is applicable at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The method according to claim 1, further comprising:

3. A step of verifying that the confirmation rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within the threshold number of symbols in the transmission time interval, at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The method according to claim 2, further comprising:

4. A step to verify that the confirmation rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within the threshold number of symbols in the transmission time interval, at least based on the determination that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The method according to claim 2, further comprising:

5. The step of determining that the downlink control information will schedule the resources on the downlink shared channel using a Type A resource mapping, and the confirmation rule is applicable at least in part to the downlink control information scheduling the resources using a Type A resource mapping. The method according to claim 1, further comprising:

6. The method according to claim 1, wherein the number of threshold symbols is 3.

7. The transmission time interval is a second transmission time interval, and the method is The steps include determining that the first downlink control channel candidate is located within a first transmission time interval preceding the second transmission time interval including the second downlink control channel candidate and the resources, A step of verifying that the confirmation rule is satisfied by the second downlink control channel candidate being located within the threshold number of symbols in the second transmission time interval, at least in part based on the determination that the first downlink control channel candidate is located within the first transmission time interval. The method according to claim 1, further comprising:

8. The step of receiving the instruction is, The step of receiving an instruction via a wireless resource control message that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked at least in part on the basis that the first search space set and the second search space set are linked. The method according to claim 1, including the method described in claim 1.

9. A method for wireless communication in user equipment (UE), Steps include receiving an instruction from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate is received at least partially before the second downlink control channel candidate; A step of decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, wherein the downlink control information includes a channel state information request. The steps include transmitting a channel status information report to the base station, at least in part on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is met, wherein the confirmation rule is that the reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate, and A method that includes this.

10. A step to verify that the confirmation rule is satisfied, at least in part, on the basis that the first downlink control channel candidate and the second downlink control channel candidate are linked, by having the reference signal resource positioned after the start symbol of the second downlink control channel candidate. The method according to claim 9, further comprising:

11. The step of receiving the instruction is, The step of receiving an instruction via a wireless resource control message that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked at least in part on the basis that the first search space set and the second search space set are linked. The method according to claim 9, including the method described in claim 9.

12. The step of determining the reference signal resource based at least in part on the channel state information request included in the downlink control information. The method according to claim 9, further comprising:

13. A method for wireless communication at a base station, The steps include sending an instruction to a user device (UE) that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate is sent, at least partially, before the second downlink control channel candidate. The steps include transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, which schedules resources of the downlink shared channel for a transmission time interval including at least the second downlink control channel candidate, A step of sending a downlink message on the resource, at least in part on the satisfaction of a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate, wherein the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval on which the resource is scheduled to transmit. A method that includes this.

14. A step of determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval in which the resource is scheduled, wherein the confirmation rule is applicable at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The method according to claim 13, further comprising:

15. A step of verifying that the confirmation rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within the threshold number of symbols in the transmission time interval, at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The method according to claim 14, further comprising:

16. A step to verify that the confirmation rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within the threshold number of symbols in the transmission time interval, at least based on the determination that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The method according to claim 14, further comprising:

17. The step of transmitting the downlink control information is, A step of transmitting downlink control information that schedules the resources of the downlink shared channel using a Type A resource mapping, wherein the confirmation rule is applicable to the downlink control information on at least partially using the Type A resource mapping. The method according to claim 13, including the method described in claim 13.

18. The method according to claim 13, wherein the number of threshold symbols is 3.

19. The transmission time interval is a second transmission time interval, and the method is The steps include determining that the first downlink control channel candidate is located within a first transmission time interval preceding the second transmission time interval including the second downlink control channel candidate and the resources, A step of verifying that the confirmation rule is satisfied by the second downlink control channel candidate being located within the threshold number of symbols in the second transmission time interval, at least in part based on the determination that the first downlink control channel candidate is located within the first transmission time interval. The method according to claim 13, further comprising:

20. The step of transmitting the aforementioned instruction is, The step of transmitting an instruction via a wireless resource control message that the first search space set and the second search space set are linked, wherein the first downlink control channel candidate and the second downlink control channel candidate are linked, at least in part, on the basis that the first search space set and the second search space set are linked. The method according to claim 13, including the method described in claim 13.

21. A method for wireless communication at a base station, The steps include sending an instruction to a user device (UE) that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, wherein the first downlink control channel candidate is sent, at least partially, before the second downlink control channel candidate. The steps include transmitting downlink control information, including a channel status information request, to the UE via the first downlink control channel candidate and the second downlink control channel candidate, The steps include receiving a channel status information report from the UE, at least in part on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is satisfied, wherein the confirmation rule is that the reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate, and A method that includes this.

22. A step to verify that the confirmation rule is satisfied, at least in part, on the basis that the first downlink control channel candidate and the second downlink control channel candidate are linked, by having the reference signal resource positioned after the start symbol of the second downlink control channel candidate. The method according to claim 21, further comprising:

23. The step of transmitting the aforementioned instruction is, The step of transmitting an instruction via a wireless resource control message that the first search space set and the second search space set are linked, wherein the first downlink control channel candidate and the second downlink control channel candidate are linked, at least in part, on the basis that the first search space set and the second search space set are linked. The method according to claim 21, including the method described in claim 21.

24. A step of indicating the reference signal resource, at least in part, based on the channel state information request included in the downlink control information. The method according to claim 21, further comprising:

25. A device for wireless communication in user equipment (UE), Processor and The memory coupled to the aforementioned processor, The device comprises instructions stored in the memory and executable by the processor, and the instructions are provided to the device, The first downlink control channel candidate in the first search space set receives an instruction from the base station that it is linked to a second downlink control channel candidate in the second search space set, and the first downlink control channel candidate is received, at least partially, before the second downlink control channel candidate. The process involves decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, wherein the downlink control information schedules resources of the downlink shared channel during a transmission time interval that includes at least the second downlink control channel candidate. Receiving a downlink message in the resource is at least partially based on the satisfaction of a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled to receive. To have them do it, Device.

26. The aforementioned instruction further instructs the device to: The determination is that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval in which the resources are scheduled, and the confirmation rule is applicable at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The apparatus according to claim 25, wherein the processor is capable of performing the following.

27. The aforementioned instruction further instructs the device to: Based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval, verify that the confirmation rule is satisfied by ensuring that both the first downlink control channel candidate and the second downlink control channel candidate are located within the threshold number of symbols for the transmission time interval. The apparatus according to claim 26, which is executable by the processor as described above.

28. The aforementioned instruction further instructs the device to: Based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval, verify that the confirmation rule is satisfied by ensuring that at least one of the first downlink control channel candidate and the second downlink control channel candidate is located within the threshold number of symbols for the transmission time interval. The apparatus according to claim 26, which is executable by the processor as described above.

29. The aforementioned instruction further instructs the device to: The downlink control information determines to schedule the resources of the downlink shared channel using a Type A resource mapping, and the confirmation rule determines that the downlink control information is at least partially applicable to scheduling the resources using a Type A resource mapping. The apparatus according to claim 25, which is executable by the processor as described above.

30. The number of threshold symbols is 3. The apparatus according to claim 25.

31. The aforementioned transmission time interval is a second transmission time interval, and the instruction further sends to the device, It is determined that the first downlink control channel candidate is located within a first transmission time interval that precedes the second transmission time interval including the second downlink control channel candidate and the resources, The verification rule is satisfied by, at least in part, determining that the first downlink control channel candidate is located within the first transmission time interval, and by ensuring that the second downlink control channel candidate is located within the threshold number of symbols in the second transmission time interval. The apparatus according to claim 25, wherein the processor is capable of performing the following.

32. The command for receiving the aforementioned instruction is given to the device, Receiving an instruction via a wireless resource control message that the first search space set and the second search space set are linked, and receiving that the first downlink control channel candidate and the second downlink control channel candidate are linked, at least in part, based on the fact that the first search space set and the second search space set are linked. The apparatus according to claim 25, wherein the processor is capable of performing the following.

33. A device for wireless communication in user equipment (UE), Processor and The memory coupled to the aforementioned processor, The device comprises instructions stored in the memory and executable by the processor, and the instructions are provided to the device, The first downlink control channel candidate in the first search space set receives an instruction from the base station that it is linked to a second downlink control channel candidate in the second search space set, and the first downlink control channel candidate is received, at least partially, before the second downlink control channel candidate. Decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, wherein the downlink control information includes a channel state information request. Transmitting a channel status information report to the base station, at least in part, based on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is met, wherein the confirmation rule is that the reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate. To have them do it, Device.

34. The aforementioned instruction further instructs the device to: The verification rule is to be satisfied by ensuring that the reference signal resource is placed after the start symbol of the second downlink control channel candidate, at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are linked. The apparatus according to claim 33, which is executable by the processor as described above.

35. The command for receiving the aforementioned instruction is given to the device, Receiving an instruction via a wireless resource control message that the first search space set and the second search space set are linked, and receiving that the first downlink control channel candidate and the second downlink control channel candidate are linked, at least in part, based on the fact that the first search space set and the second search space set are linked. The apparatus according to claim 33, wherein the processor is capable of performing the following.

36. The aforementioned instruction further instructs the device to: The reference signal resource is determined at least partially based on the channel state information request included in the downlink control information. The apparatus according to claim 33, which is executable by the processor as described above.

37. A device for wireless communication at a base station, Processor and The memory coupled to the aforementioned processor, The device comprises instructions stored in the memory and executable by the processor, and the instructions are provided to the device, The first downlink control channel candidate in the first search space set is linked to the second downlink control channel candidate in the second search space set, and the first downlink control channel candidate is transmitted, at least partially, before the second downlink control channel candidate. Sending downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, which schedules resources of the downlink shared channel for at least a transmission time interval including the second downlink control channel candidate, Sending a downlink message in the resource is at least partially based on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is met, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of the transmission time interval in which the resource is scheduled to transmit. To have them do it, Device.

38. The aforementioned instruction further instructs the device to: The determination is that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval in which the resources are scheduled, and the confirmation rule is applicable at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval. The apparatus according to claim 37, wherein the processor is capable of performing the following.

39. The aforementioned instruction further instructs the device to: Based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval, verify that the confirmation rule is satisfied by ensuring that both the first downlink control channel candidate and the second downlink control channel candidate are located within the threshold number of symbols for the transmission time interval. The apparatus according to claim 38, which is executable by the processor as described above.

40. The aforementioned instruction further instructs the device to: Based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval, verify that the confirmation rule is satisfied by ensuring that at least one of the first downlink control channel candidate and the second downlink control channel candidate is located within the threshold number of symbols for the transmission time interval. The apparatus according to claim 38, which is executable by the processor as described above.

41. The command for transmitting the downlink control information is sent to the device, The transmission of downlink control information that schedules the resources on the downlink shared channel using a Type A resource mapping, wherein the confirmation rule is applicable, at least in part, to scheduling the resources using the Type A resource mapping. The apparatus according to claim 37, wherein the processor is capable of performing the following.

42. The number of threshold symbols is 3. The apparatus according to claim 37.

43. The aforementioned transmission time interval is a second transmission time interval, and the instruction further sends to the device, It is determined that the first downlink control channel candidate is located within a first transmission time interval that precedes the second transmission time interval including the second downlink control channel candidate and the resources, The verification rule is satisfied by, at least in part, determining that the first downlink control channel candidate is located within the first transmission time interval, and by ensuring that the second downlink control channel candidate is located within the threshold number of symbols in the second transmission time interval. The apparatus according to claim 37, wherein the processor is capable of performing the following.

44. The command for transmitting the aforementioned instruction is given to the device, Transmitting an instruction via a wireless resource control message that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked, at least in part, on the basis that the first search space set and the second search space set are linked. The apparatus according to claim 37, wherein the processor is capable of performing the following.

45. A device for wireless communication at a base station, Processor and The memory coupled to the aforementioned processor, The device comprises instructions stored in the memory and executable by the processor, and the instructions are provided to the device, The first downlink control channel candidate in the first search space set is linked to the second downlink control channel candidate in the second search space set, and the first downlink control channel candidate is transmitted, at least partially, before the second downlink control channel candidate. Downlink control information including a channel status information request is transmitted to the UE via the first downlink control channel candidate and the second downlink control channel candidate. Receiving a channel status information report from the UE, at least in part on the fact that a confirmation rule associated with the linking of the first downlink control channel candidate and the second downlink control channel candidate is satisfied, the confirmation rule being that the reference signal resource associated with the channel status information request is located at least after the start symbol of the first downlink control channel candidate, and To have them do it, Device.

46. The aforementioned instruction further instructs the device to: The verification rule is to be satisfied by ensuring that the reference signal resource is placed after the start symbol of the second downlink control channel candidate, at least in part on the fact that the first downlink control channel candidate and the second downlink control channel candidate are linked. The apparatus according to claim 45, which is executable by the processor as described above.

47. The command for transmitting the aforementioned instruction is given to the device, Transmitting an instruction via a wireless resource control message that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked, at least in part, on the basis that the first search space set and the second search space set are linked. The apparatus according to claim 45, wherein the processor is capable of performing the following.

48. The aforementioned instruction further instructs the device to: The reference signal resource is indicated at least partially based on the channel state information request included in the downlink control information. The apparatus according to claim 45, which is executable by the processor as described above.

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