Dynamic rewriting of control beam monitoring configuration

Abstract

Methods, systems, and devices for wireless communications are described that support overriding a beam monitoring pattern used for control channel transmissions based on channel conditions between a user equipment and a base station. The base station may select a beam monitoring pattern for sending control channel transmissions, and the beam monitoring pattern may include a pattern in which two or more beams are used for control channel transmissions. When a first beam among the beams used in the beam monitoring pattern satisfies a particular metric, use of one or more additional beams according to the beam monitoring pattern may be overridden, and transmission may continue using the first beam. The metric for continuing to use the first beam may include a channel quality metric, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination thereof.

Description

[0001] This application is a divisional application of a patent application filed on March 6, 2018, entitled “Dynamic Rewriting of Control Beam Monitoring Configuration” and application number 201880022186.7.

[0002] This patent application claims priority to U.S. patent application No. 15 / 912,144, filed on March 5, 2018, by John Wilson et al., entitled “Dynamic Overriding of Control Beam Monitoring Configuration,” and U.S. Provisional Patent Application No. 62 / 480,340, filed on March 31, 2017, by John Wilson et al., entitled “Dynamic Overriding of Control Beam Monitoring Configuration,” each of which is assigned to the assignee of the present application and expressly incorporated herein by reference. Technical Field

[0003] The following relates generally to wireless communications, and particularly to dynamically overriding control beam monitoring configurations. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems are capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division multiple access (OFDMA) systems (e.g., long-term evolution (LTE) systems, new radio (NR) systems). A wireless multiple-access communication system may include multiple base stations or network access nodes, each of which simultaneously supports communication for multiple communication devices, which may also be referred to as user equipment (UE).

[0005] Some wireless communication systems (e.g., NR systems) may operate in a frequency range associated with beamformed transmissions between wireless devices (e.g., transmissions in the millimeter wave (mmW) frequency range). These transmissions may be associated with increased signal attenuation (e.g., path loss) compared to transmissions in non-mmW frequency ranges. As a result, signal processing techniques such as beamforming may be used to coherently combine energy and overcome path loss in these systems. In some cases, control channel transmissions may be periodically sent using one or more transmit beams, and in some cases, the control channel transmissions may be sent on two or more different beams according to a beam monitoring pattern. Conventional solutions for controlling beam monitoring patterns are insufficient. Summary of the Invention

[0006] The described technology relates to improved methods, systems, devices, and apparatus that support rewriting a beam monitoring pattern for control channel transmissions based on channel conditions between a user equipment (UE) and a base station. In various examples, a base station may select a beam monitoring pattern for sending a control channel transmission, and the beam monitoring pattern may include a pattern in which two or more beams are used for control channel transmissions. An example pattern may be a time division multiplexing (TDM) pattern. When a first beam of the beams used in the beam monitoring pattern satisfies a particular metric, use of one or more additional beams according to the beam monitoring pattern may be rewritten, and transmission may continue using the first beam. In some cases, the metric for continuing to use the first beam may include a channel quality metric, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination of the foregoing.

[0007] In some cases, the base station may send an indication to the UE that the first beam is to continue to be used for control channel transmissions. In other cases, the UE may send an indication to the base station that the first beam is to continue to be used for control channel transmissions. In other cases, both the UE and the base station may be configured with the same set of metrics and may autonomously continue to use the first beam for control channel transmissions without transmitting additional signaling. In some cases, the metrics may be evaluated and re-evaluated at predetermined durations to determine whether the configured beam monitoring pattern should be used or overwritten.

[0008] A method of wireless communication is described. The method may include identifying a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; transmitting the control channel transmission during the first time period subset using the first transmission beam subset; determining, during the first time period subset, that the transmitted first transmission beam subset exceeds a reliability threshold; and, in response to the determination, continuing to transmit using the first transmission beam subset for at least a portion of the second time period subset.

[0009] An apparatus for wireless communication is described. The apparatus may include: means for identifying a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; means for transmitting the control channel transmission during the first time period subset using the first transmission beam subset; means for determining that the transmitted first transmission beam subset exceeds a reliability threshold during the first time period subset; and means for continuing to transmit using the first transmission beam subset for at least a portion of the second time period subset in response to the determination.

[0010] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be operable to cause the processor to: identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; transmit the control channel transmission during the first time period subset using the first transmission beam subset; determine, during the first time period subset, that the transmitted first transmission beam subset exceeds a reliability threshold; and, in response to the determination, continue transmitting using the first transmission beam subset for at least a portion of the second time period subset.

[0011] A non-transitory computer-readable medium for wireless communications is described. The non-transitory computer-readable medium may include instructions operable to cause a processor to: identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; transmit the control channel transmission during the first time period subset using the first transmission beam subset; determine, during the first time period subset, that the transmitted first transmission beam subset exceeds a reliability threshold; and, in response to the determination, continue transmitting using the first transmission beam subset for at least a portion of the second time period subset.

[0012] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for sending an indication to a UE indicating that the first transmission beam subset may be to be used for at least the portion of the second time period subset. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the indication indicates that the first transmission beam subset may be to be used for both the first time period subset and the second time period subset for an identified duration. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the identified duration may be indicated by the indication or may be preconfigured. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the indication may be sent in a medium access control (MAC) control element (CE) or in downlink control information (DCI) included in transmission using the control channel. Some examples of the above methods, apparatuses, and non-transitory computer-readable media may also include a process, feature, unit, or instruction for receiving an acknowledgment of the indication from the UE.

[0013] In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the first beam monitoring pattern maps the first transmission beam subset to a first number of time slots in the first time period subset, and maps the second transmission beam subset to a second number of time slots in the second time period subset. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the determining comprises determining that a predetermined number of acknowledgments may be received during the first time period subset, determining that a signal quality of the first transmission beam subset exceeds a signal quality threshold, or any combination of the foregoing. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the determining comprises receiving an indication from the UE that the transmitted first transmission beam subset exceeds the reliability threshold, and confirming receipt of the indication. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the indication may be received in a MAC CE or in uplink control information (UCI) received from the UE.

[0014] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include a process, feature, unit, or instruction for configuring a UE to determine whether the first transmission beam subset transmitted during the first time period subset exceeds the reliability threshold, and to continue using the first transmission beam subset for at least the portion of the second time period subset based on the determination, and wherein continuing to use the first transmission beam subset for transmission may be performed autonomously at the UE and at the base station. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the configuration includes configuring the UE to have the same set of metrics as the base station for determining to continue using the first transmission beam subset for at least the portion of the second time period subset.

[0015] In some examples of the above methods, apparatuses, and non-transitory computer-readable media, continuing to transmit using the first transmission beam subset includes continuing to transmit using the first transmission beam subset for an identified duration, and resuming the first beam monitoring pattern after expiration of the identified duration. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, continuing to transmit using the first transmission beam subset also includes determining, before expiration of the identified duration, that the transmitted first transmission beam subset continues to exceed the reliability threshold, and continuing to transmit using the first transmission beam subset for another identified duration.

[0016] Some examples of the above-mentioned methods, apparatuses, and non-transitory computer-readable media may also include processes, features, units, or instructions for: determining that the first transmission beam subset sent during the first time period subset does not exceed a reliability threshold; identifying a second beam monitoring pattern for sending a control channel transmission, the second beam monitoring pattern indicating that the control channel transmission is to be sent using a third transmission beam subset in a third time period subset, and indicating that the control channel transmission is to be sent using a fourth transmission beam subset in a fourth time period subset; and overwriting the beam monitoring pattern with the second beam monitoring pattern.

[0017] A method of wireless communication is described. The method may include identifying a beam monitoring pattern for monitoring a control channel transmission on a transmission beam from a base station, the beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; receiving the control channel transmission on the first transmission beam subset during the first time period subset; determining, during the first time period subset, that the transmitted first transmission beam subset exceeds a reliability threshold; and, in response to the determination, continuing to receive the control channel transmission using the first transmission beam subset for at least a portion of the second time period subset.

[0018] An apparatus for wireless communication is described. The apparatus may include: means for identifying a beam monitoring pattern for monitoring a control channel transmission on a transmission beam from a base station, the beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; means for receiving the control channel transmission on the first transmission beam subset during the first time period subset; means for determining that the transmitted first transmission beam subset exceeds a reliability threshold during the first time period subset; and means for continuing to receive the control channel transmission using the first transmission beam subset for at least a portion of the second time period subset in response to the determination.

[0019] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be operable to cause the processor to: identify a beam monitoring pattern for monitoring a control channel transmission on a transmission beam from a base station, the beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; receive the control channel transmission on the first transmission beam subset during the first time period subset; determine, during the first time period subset, that the transmitted first transmission beam subset exceeds a reliability threshold; and, in response to the determination, continue to receive the control channel transmission using the first transmission beam subset for at least a portion of the second time period subset.

[0020] A non-transitory computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions operable to cause a processor to: identify a beam monitoring pattern for monitoring a control channel transmission on a transmission beam from a base station, the beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset; receive the control channel transmission on the first transmission beam subset during the first time period subset; determine, during the first time period subset, that the transmitted first transmission beam subset exceeds a reliability threshold; and, in response to the determination, continue to receive the control channel transmission using the first transmission beam subset for at least a portion of the second time period subset.

[0021] In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the first beam monitoring pattern maps the first transmission beam subset to a first number of time slots in the first time period subset, and maps the second transmission beam subset to a second number of time slots in the second time period subset. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the determining comprises: receiving an indication from the base station indicating that the first transmission beam subset may be to be used for at least the portion of the second time period subset. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the indication indicates that the first transmission beam subset may be to be used for both the first time period subset and the second time period subset for the identified duration.

[0022] In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the identified duration may be indicated by the indication or may be preconfigured. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the indication may be sent in a MAC CE or in a DCI included in the control channel transmission. Some examples of the above methods, apparatuses, and non-transitory computer-readable media may also include a process, feature, unit, or instruction for sending an acknowledgment of the indication to the base station.

[0023] In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the determining comprises: determining that a predetermined number of acknowledgments can be received during the first subset of time periods, determining that a signal quality of the first subset of transmission beams exceeds a signal quality threshold, or any combination thereof. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the determining comprises: sending an indication to a base station that the transmitted first subset of transmission beams exceeds the reliability threshold; and receiving an acknowledgment of receipt of the indication, wherein continuing to receive the control channel transmission using the first subset of transmission beams can be performed in response to receiving the acknowledgment. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, the indication can be sent in a MAC CE or in a UCI.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described above may also include processes, features, units, or instructions for receiving configuration information from a base station to determine whether the first transmission beam subset sent during the first time period subset exceeds the reliability threshold, and to continue using the first transmission beam subset for at least the portion of the second time period subset based on the determination, and wherein continuing to use the first transmission beam subset to receive the control channel transmission can be performed autonomously at the base station and at the UE.

[0025] In some examples of the above methods, apparatuses, and non-transitory computer-readable media, continuing to receive the control channel transmission using the first transmission beam subset includes continuing to receive the control channel transmission using the first transmission beam subset for an identified duration, and resuming the first beam monitoring pattern after expiration of the identified duration. In some examples of the above methods, apparatuses, and non-transitory computer-readable media, continuing to receive the control channel transmission using the first transmission beam subset also includes determining, before expiration of the identified duration, that the transmitted first transmission beam subset continues to exceed the reliability threshold, and continuing to receive the control channel transmission using the first transmission beam subset for another identified duration.

[0026] Some examples of the above-mentioned methods, apparatuses, and non-transitory computer-readable media may also include processes, features, units, or instructions for: determining that the first transmission beam subset sent during the first time period subset does not exceed a reliability threshold; identifying a second beam monitoring pattern for receiving a control channel transmission, the second beam monitoring pattern indicating that the control channel transmission is to be sent using a third transmission beam subset in a third time period subset, and indicating that the control channel transmission is to be sent using a fourth transmission beam subset in a fourth time period subset; and overwriting the beam monitoring pattern with the second beam monitoring pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1

[0014] An example of a system for wireless communication that supports dynamic rewriting of control beam monitoring configurations in accordance with aspects of the present disclosure is shown.

[0028] Figure 2 An example of a wireless communication system supporting dynamic rewriting of control beam monitoring configurations in accordance with aspects of the present disclosure is shown.

[0029] Figure 3 Examples of beam monitoring patterns supporting dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure are shown.

[0030] Figure 4 An example of a process flow supporting dynamic rewriting of a control beam monitoring configuration in accordance with aspects of the present disclosure is shown.

[0031] Figures 5 to 7 A block diagram of an apparatus supporting dynamic rewriting of control beam monitoring configurations in accordance with aspects of the present disclosure is shown.

[0032] Figure 8 A block diagram of a system including a base station that supports dynamic rewriting of control beam monitoring configurations in accordance with aspects of the present disclosure is shown.

[0033] Figures 9 to 11 A block diagram of an apparatus supporting dynamic rewriting of control beam monitoring configurations in accordance with aspects of the present disclosure is shown.

[0034] Figure 12 A block diagram illustrating a system including a UE that supports dynamic rewriting of control beam monitoring configurations in accordance with aspects of the present disclosure is shown.

[0035] Figures 13 to 16 A method for dynamically rewriting a control beam monitoring configuration according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0036] The described technology relates to improved methods, systems, devices, and apparatus that support rewriting a beam monitoring pattern for control channel transmissions based on channel conditions between a user equipment (UE) and a base station. In various examples, a base station may select a beam monitoring pattern for sending a control channel transmission, and the beam monitoring pattern may include a pattern in which two or more beams are used for control channel transmissions. An example pattern may be a time division multiplexing (TDM) pattern. When a first beam of the beams used in the beam monitoring pattern satisfies a particular metric, use of one or more additional beams according to the beam monitoring pattern may be rewritten, and transmission may continue using the first beam. In some cases, the metric for continuing to use the first beam may include a channel quality metric, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination of the foregoing.

[0037] Some wireless communication systems may operate in a frequency range that supports beamformed transmissions between wireless devices. Communications in the mmW band may suffer from increased signal attenuation (e.g., path loss). As a result, signal processing techniques such as beamforming may be used to coherently combine energy and overcome path loss in these systems. In such systems, wireless devices (such as UEs and base stations) may be able to communicate via one or more active beams, which may correspond to a transmit beam used at a transmitting device and a receive beam used at a receiving device (e.g., a beam pair). In some cases, one or more transmit beams may be used to periodically send control channel transmissions, and in some cases, control channel transmissions may be sent on two or more different beams according to a beam monitoring pattern. Such a beam monitoring pattern may use a combination of two or more transmit beams to send control channel information so as to support reception of a control channel transmission on one of these beams at the UE when another of these beams is blocked or otherwise not successfully received.

[0038] In some cases, a beam monitoring pattern can be configured for control channel (e.g., physical downlink control channel (PDCCH)) transmissions between a base station and a UE, and the disclosed technology can support rewriting the beam monitoring pattern based on channel conditions. In some examples, a first beam monitoring pattern can be configured for sending control channel transmissions, wherein two or more beams are used for control channel transmissions (e.g., according to a TDM pattern). When a first beam of the beams used in the beam monitoring pattern meets a specific metric, the use of one or more additional beams according to the beam monitoring pattern can be rewritten, and the first beam can continue to be used for transmission. In some cases, the metric for continuing to use the first beam can include a channel quality metric, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination of the above.

[0039] In some cases, the base station may send an indication to the UE that the first beam is to continue to be used for control channel transmissions. In other cases, the UE may send an indication to the base station that the first beam is to continue to be used for control channel transmissions. In other cases, both the UE and the base station may be configured with the same set of metrics and may autonomously continue to use the first beam for control channel transmissions without transmitting additional signaling. In some cases, the metrics may be evaluated and re-evaluated at predetermined durations to determine whether the configured beam monitoring pattern should be used or overwritten.

[0040] Aspects of the present disclosure are initially described in the context of wireless communication systems.Aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow diagrams related to dynamically rewriting control beam monitoring configurations.

[0041] Figure 1 An example of a wireless communication system 100 according to various aspects of the present disclosure is shown. The wireless communication system 100 includes a base station 105, a UE 115, and a core network 130. In some examples, the wireless communication system 100 can be an LTE network, an LTE-Advanced (LTE-A) network, or an NR network. In some cases, the wireless communication system 100 can support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, or communication with low-cost and low-complexity devices. The wireless communication system 100 can support dynamic rewriting of the control beam monitoring configuration based on, for example, the reliability of the main beam used for control channel transmission.

[0042] The base station 105 can communicate wirelessly with the UE 115 via one or more base station antennas. Each base station 105 can provide communication coverage for a corresponding geographic coverage area 110. The communication link 125 shown in the wireless communication system 100 can include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. Control information and data can be multiplexed on the uplink channel or the downlink channel according to various techniques. For example, time division multiplexing (TDM) technology, frequency division multiplexing (FDM) technology, or hybrid TDM-FDM technology can be used to multiplex control information and data on the downlink channel. In some examples, the control information sent during the transmission time interval (TTI) of the downlink channel can be distributed between different control regions (e.g., between a common control region and one or more UE-specific control regions) in a cascaded manner.

[0043] UEs 115 may be dispersed throughout the wireless communication system 100, and each UE 115 may be fixed or mobile. UE 115 may also be referred to as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology. UE 115 may also be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a personal electronic device, a handheld device, a personal computer, a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, a machine type communication (MTC) device, an apparatus, an automobile, etc.

[0044] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. At least some network devices, such as the base station 105, may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC). Each access network entity may communicate with a number of UEs 115 through a number of other access network transport entities, each of which may be an example of a smart radio head or a transmission / reception point (TRP). In some configurations, the various functions of each access network entity or base station 105 may be distributed among various network devices (e.g., a radio head and an access network controller) or consolidated into a single network device (e.g., a base station 105).

[0045] The wireless communication system 100 can operate in the ultra-high frequency (UHF) frequency region, which uses a frequency band from 700 MHz to 2600 MHz (2.6 megahertz (GHz)), but in some cases, wireless local area networks (WLANs) can use frequencies up to 4 GHz. Because the wavelengths range in length from approximately one decimeter to one meter, this region can also be referred to as the decimeter band. UHF waves may primarily propagate via line of sight and may be blocked by buildings and environmental features. However, the waves can penetrate walls sufficiently to provide service to UEs 115 located indoors. Compared to transmissions using the lower frequencies (and longer wavelengths) in the high frequency (HF) or very high frequency (VHF) portions of the spectrum, transmissions using UHF waves are characterized by smaller antennas and shorter ranges (e.g., less than 100 km). In some cases, the wireless communication system 100 can also utilize the extremely high frequency (EHF) portion of the spectrum (e.g., from 30 GHz to 300 GHz). This region can also be referred to as the millimeter band because the wavelengths range in length from approximately one millimeter to one centimeter. Therefore, EHF antennas can be smaller and closer together than UHF antennas. In some cases, this may facilitate the use of antenna arrays (eg, for directional beamforming) within UE 115. However, EHF transmissions may suffer from greater atmospheric attenuation and a shorter range than UHF transmissions.

[0046] The wireless communication system 100 can therefore support mmW communications between the UE 115 and the base station 105. Devices operating in the mmW or EHF bands can have multiple antennas to allow beamforming. That is, the base station 105 can use multiple antennas or antenna arrays to perform beamforming operations for directional communications with the UE 115. Beamforming (which can also be referred to as spatial filtering or directional transmission) is a signal processing technique that can be used at a transmitter (e.g., the base station 105) to shape and / or steer the entire antenna beam in the direction of a target receiver (e.g., the UE 115). This can be achieved by combining the elements in the antenna array in such a way that signals sent at a particular angle experience constructive interference, while signals sent at different angles experience destructive interference.

[0047] A multiple-input, multiple-output (MIMO) wireless system uses a transmission scheme between a transmitter (e.g., base station 105) and a receiver (e.g., UE 115) where both the transmitter and the receiver are equipped with multiple antennas. Some portions of the wireless communication system 100 may use beamforming. For example, the base station 105 may have an antenna array with several rows and columns of antenna ports that the base station 105 may use for beamforming in its communications with the UE 115. A signal may be sent multiple times in different directions (e.g., each transmission may be beamformed differently). A mmW receiver (e.g., UE 115) may attempt multiple beams (e.g., antenna subarrays) while receiving synchronization signals.

[0048] In some cases, the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays (e.g., panels) that may support beamforming or MIMO operations. One or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some cases, the antennas or antenna arrays associated with a base station 105 may be located at different geographic locations. The base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with the UE 115.

[0049] In some cases, the wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or packet data convergence protocol (PDCP) layer can be IP-based. The radio link control (RLC) layer can perform packet segmentation and reassembly in some cases to communicate on the logical channel. The MAC layer can perform priority processing and multiplexing of logical channels to transport channels. The MAC layer can also use hybrid automatic repeat request (HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer can provide the establishment, configuration and maintenance of the RRC connection that supports the radio bearer for user plane data between the UE 115 and the base station 105 and the network equipment or core network 130. At the physical (PHY) layer, the transport channel can be mapped to the physical channel.

[0050] Thus, in wireless communication system 100, UE 115 and base station 105 communicate via one or more active beams. In some cases, control channel transmissions may be periodically transmitted according to a beam monitoring pattern. For example, a radio subframe may include two time slots, and a PDCCH transmission may be transmitted to UE 115 once per time slot. For example, a PDCCH transmission may be transmitted using a first transmission beam for a predetermined number of time slots, and then a second, different transmission beam may be used for a second predetermined number of time slots. In some cases, the control channel transmission using the second transmission beam may be transmitted at a higher power and / or aggregation level because the second transmission beam is weaker at UE 115 than the first transmission beam. Using different transmission beams in such a monitoring pattern may enable reception of the control channel transmission on either the first or second transmission beam at UE 115 even if one of the beams is blocked or otherwise unsuccessfully received. Various disclosed techniques may enable rewriting the beam monitoring pattern based on channel conditions.

[0051] Figure 2 An example of a wireless communication system 200 that supports dynamic rewriting of control beam monitoring configurations according to various aspects of the present disclosure is shown. The wireless communication system 200 includes a base station 105-a and a UE 115-a, each of which can be as described with reference to FIG. Figure 1 Examples of corresponding devices are described.

[0052] The wireless communication system 200 can operate within a frequency range associated with beamformed transmissions between the base station 105-a and the UE 115-a. For example, the wireless communication system 200 can operate using the mmW frequency range. As a result, signal processing techniques such as beamforming can be used to coherently combine energy and overcome path loss. For example, the base station 105-a can include multiple antennas. In some cases, each antenna can transmit (or receive) a phase-shifted version of the signal such that the phase-shifted versions interfere constructively in a particular area and destructively in other areas. Weights can be applied to the various phase-shifted versions to, for example, direct the transmission in a desired direction. Such techniques (or similar techniques) can be used to increase the coverage area 110-a of the base station 105-a or benefit the wireless communication system 200 in other ways.

[0053] Downlink beams 205-a, 205-b, 205-c, and 205-d represent examples of beams over which data (e.g., control information, shared channel data, or a combination thereof) may be transmitted. Accordingly, each downlink beam 205 may be directed from base station 105-a to a different area of ​​coverage area 110-a, and in some cases, two or more beams may overlap. Downlink beams 205-a and 205-b may be transmitted simultaneously or at different times. In either case, UE 115-a may be able to receive information in one or more downlink beams 205. Similarly, UE 115-a may transmit two or more uplink beams 210 (e.g., uplink beams 210-a, 210-b).

[0054] As described above, in some cases, control channel transmissions (e.g., PDCCH transmissions) may use more than one beam for robustness to channel blocking. In such cases, the base station 105-a may send the control channel transmissions, and the UE 115-a may be configured to monitor for the control channel transmissions based on a beam monitoring pattern across time slots. For example, the beam monitoring pattern may include TDM monitoring of PDCCH beams across time slots, where particular time slots may use a first subset of transmission beams (e.g., a single first transmission beam or a combination of two or more beams) while other time slots may use a second subset of transmission beams (e.g., a single second transmission beam or a combination of two or more beams). The beam pattern may be a function of mapping one or more beams to a transmission time interval (e.g., a time slot, a mini-slot, a control resource set (CORESET), a subframe, a frame, etc.). A CORESET may include, for example, one or more resource blocks in the frequency domain and one or more OFDM symbol periods in the time domain. An example beam pattern may include transmitting a first beam for a first transmission time interval (e.g., a first number of time slots (e.g., 9 time slots)) and then transmitting a second beam in a second transmission time interval (e.g., a second number of time slots (e.g., 10 time slots)). The beam pattern may include different or the same number of time slots for the first and second beams, and any number of time slots may be used. The first beam pattern may be a default function, and the second beam pattern may be an override function.

[0055] In some cases, the first transmission beam subset may use a transmission beam having a better channel quality than the channel quality of the second transmission beam subset. In such a case, whenever the weaker second transmission beam subset is used, the control channel transmission may be sent at a higher aggregation level or higher power to close the link and provide a higher likelihood of successful reception at UE 115. The benefit of using the weaker link begins to arise when there is degradation on the stronger link, where UE 115-a may initially be unable to receive control channel transmissions on the stronger link but successfully receive transmissions on the weaker link.

[0056] The present disclosure provides techniques for enhancing network efficiency when a strong link has been observed to be a reliable link. For example, if a first transmission beam subset has resulted in successful transmissions for a particular number of consecutive time slots, it is unlikely that the link will significantly degrade in one or more subsequent time slots. In such a case, transmitting on a second beam subset using a higher power and / or aggregation level may be inefficient compared to continuing to transmit using the first transmission beam subset alone. In various aspects of the present disclosure, techniques are provided that can more efficiently utilize base station 105-a resources while also providing robustness in control channel transmissions.

[0057] In some cases, the base station 105-a can dynamically indicate to the UE 115-a (e.g., via a MAC CE or DCI transmission) that the overwritten monitoring pattern is to be used. In some examples, the overwritten monitoring pattern can be used for a specific duration, such as for the next N time slots (e.g., where N is 40), before switching back to the first monitoring pattern. In some cases, before the duration expires, the first beam subset can be reevaluated and the overwritten pattern can be continued for another duration. In some cases, the second monitoring pattern can simply be to continue using the first transmission beam that has been identified as exceeding a reliability threshold for control channel transmission. In some cases, after instructing the UE 115-a to overwrite the first monitoring pattern, the UE 115-a can acknowledge receipt of the indication, and both the UE 115-a and the base station 105-a can use the second monitoring pattern.

[0058] In other cases, when UE 115-a observes that the first transmission beam subset has exceeded a reliability threshold, UE 115-a can dynamically indicate to base station 105-a that a second monitoring pattern is to be used. In some cases, similar to that shown above, the reliability threshold can be the number of consecutive control channel transmissions successfully received at UE 115-a, the signal-to-noise ratio (or signal-to-noise-and-interference ratio) at which a reference signal (RS) or synchronization signal (SS) (e.g., PDCCH RS / CSI-RS / SS) denies exceeding a threshold, or a combination thereof. In other cases, both base station 105-a and UE 115-a can implicitly determine when to use the overwrite monitoring pattern, and both can switch to the overwrite pattern (e.g., at time N1 for N time slots) before switching back to a pre-configured pattern (or re-evaluating whether to continue the overwrite pattern).

[0059] In some examples, a reliability threshold can be defined in such a way that, in most cases when the reliability threshold is met (e.g., not exceeded), the control channel should not fail. For example, when the primary control link is not faulty, communication is robust. In some cases, configuring two beams in each time slot for exchanging control information can be very robust, given that if one beam fails, the other beam can convey control information. However, always using two beams can waste resources. Compared to the example of using two beams, the monitoring pattern described herein can be used to increase the robustness of the transmission while using fewer resources.

[0060] As described above, different monitoring patterns may be used to monitor the transmission beam used for control channel transmission. Figure 3 An example of a beam monitoring pattern 300 that supports dynamic rewriting of a control beam monitoring configuration according to various aspects of the present disclosure is shown. In some examples, the beam monitoring pattern 300 can be used to implement various aspects of the wireless communication system 100. The beam monitoring pattern 300 can be, for example, as described with reference to Figure 1 and 2 The UE 115 and base station 105 described herein use the beam monitoring pattern 300. For illustration purposes, the various aspects of the beam monitoring pattern 300 have been simplified. Accordingly, the arrangement and periodicity of the various resources described below may be similar to those described herein. Figure 3 Different from what is described in .

[0061] The beam monitoring pattern 300 may provide, for example, a PDCCH monitoring pattern, which is defined as a mapping from symbols or time slots to PDCCH beam subsets. In some examples, the base station 105-b may send a control channel transmission on one or more transmission beams, the one or more transmission beams including a first transmission beam 315, a second transmission beam 320, and a third transmission beam 325. Additionally, there may be two types of PDCCH beam monitoring patterns, including a set 305 of configured patterns and a set 310 of overwrite patterns. When measurement results indicate that the set 310 of overwrite patterns will improve a function such as reliability, the set 310 of overwrite patterns may be considered a fallback pattern. In some examples, use of the set of overwrite patterns 310 may be performed in a fallback mode of operation.

[0062] In the depicted example, the configured pattern 305 can include several different patterns that can be selected by the base station 105-b. For example, the first beam monitoring pattern 305-a can support: control channel transmissions are sent using a first transmission beam 315 for the first N-1 time slots, followed by sending control channel transmissions using a second transmission beam 320 in time slot N; and the pattern can be repeated for the subsequent N time slots. In one example, the first beam monitoring pattern 305-a can map a first subset of transmission beams 315, 320, 325, and 330 (e.g., beam 315) to a first number of time slots (e.g., the first N-1 time slots) in a first time period subset (e.g., N-1 time slots out of a total of N time slots) and map a second subset of transmission beams 315, 320, 325, and 330 (e.g., beam 320) to a second number of time slots (e.g., time slot N) in a second time period subset (e.g., the Nth time slot). The time period may correspond to the N time periods allocated to the N time slots.

[0063] The second beam monitoring pattern 305-b may support that control channel transmissions are sent in even time slots using the first transmission beam 315 and that control channel transmissions are sent in odd time slots using the second transmission beam 320. In one example, the second beam monitoring pattern 305-b may map a first subset of transmission beams 315, 320, 325, and 330 (e.g., beam 315) to a first number of time slots in a first time period subset (e.g., even time slots out of N time slots) and map a second subset of transmission beams 315, 320, 325, and 330 (e.g., beam 320) to a second number of time slots in a second time period subset (e.g., odd time slots out of N time slots). In some cases, such as in the third beam monitoring pattern 305-c, the beam monitoring pattern can support that a control channel transmission is sent using more than one beam in a time slot, wherein in the third beam monitoring pattern 305-c, until the pattern repeats, the control channel transmission is sent in the first time slot using the first transmission beam 315 and the third transmission beam 325, and subsequently transmitted using the first transmission beam 315. Many other different beam monitoring patterns can be configured, and Figure 3 The examples in may be provided for purposes of discussion and illustration only and do not limit the present disclosure.

[0064] In some examples, upon determining that a beam or subset of beams meets a reliability threshold, an override pattern 310 may be selected for control channel transmission for a specific duration. Figure 3 In the example of FIG, a first rewrite pattern 310-a may include control channel transmissions using only the first beam 315. Similarly, a second rewrite pattern 310-b may include control channel transmissions using only the second beam 320. In some implementations, there may not be an explicit set of configured rewrite patterns, but simply a rewrite rule to stay on the first beam or beam subset for a duration (e.g., the next N time slots) when the first beam or beam subset meets the reliability threshold. In the case of using rewrite patterns, the control channel transmissions are provided for purposes of illustration and discussion only. Figure 3 For example, set 310 of rewrite patterns may include many different rewrite patterns. In some cases, base station 105-b may configure one or more UEs with set 305 of configured patterns and set 310 of rewrite patterns, and may signal to UE 115-a which pattern from the different sets of patterns is to be used for control channel monitoring. In some cases, the set of patterns and / or the specific pattern to be used for control channel transmission to UE 115-a may be semi-statically configured and signaled to UE 115-a via, for example, RRC signaling.

[0065] For example, base station 105-b may use first beam monitoring pattern 305-a to transmit a first subset of transmission beams 315, 320, 325, and 330 (e.g., beam 315). Base station 105-b may determine that the transmitted first subset of transmission beams (e.g., beam 315) does not exceed a reliability threshold in a first subset of time periods (e.g., the first N-1 time slots). Base station 105-b may identify second beam monitoring pattern 310 for transmitting control channel transmissions. The second beam monitoring pattern 310 may indicate that control channel transmissions are to be sent using a third subset of transmission beams 315, 320, 325, and 330 (e.g., beam 325) in a third subset of time periods (e.g., the first N-1 time slots in the second group of N time slots starting after the Nth time slot in the first group of N time slots), and indicate that control channel transmissions are to be sent using a fourth subset of transmission beams 315, 320, 325, and 330 (e.g., beam 330) in a fourth subset of time periods (e.g., the Nth time slot in the second group of N time slots). The base station 105-b may determine to overwrite the first beam monitoring pattern 305-a and instead utilize the second beam monitoring pattern 310, for example, based on a determination that the transmitted first transmission beam subset (e.g., beam 315) does not exceed a reliability threshold. In some cases, UE 115-a may make a similar determination that the transmitted first transmission beam subset (e.g., beam 315) does not exceed the reliability threshold and instruct base station 105-b to rewrite the first beam monitoring pattern 305-a and instead transmit using the second beam monitoring pattern 310.

[0066] In some cases, a determination to switch from the configured monitoring pattern 305 to the overriding monitoring pattern 310 may be made at the base station 105-b and dynamically signaled to the UE 115-a (e.g., via a MAC CE or in a DCI). As described above, in some cases, an overriding beam pattern may be configured; or there may be a rule such that when the current beam or beam subset meets a reliability threshold, the current beam or beam subset may be stayed on for a duration (e.g., for the next N time slots). For example, the base station 105-b may configure a first monitoring pattern 305-a where N is 40 and may begin control channel transmission according to the configured pattern. During the transmission, the base station 105-b may observe that the control channel transmission on the first transmission beam 315 is successfully received at the UE 115-a for 35 consecutive time slots (e.g., an ACK is received from the UE 115-a). Additionally or alternatively, the base station 105-b may identify that measurement results associated with the first transmission beam 315 (e.g., a particular number of channel quality information (CQI) reports from the UE 115-a) indicate that the channel quality of the first beam is above a threshold for a particular time period.

[0067] When the reliability of the first transmission beam 315 reaches or exceeds this reliability threshold, the base station 105-b can indicate to the UE 115-a that the first rewrite pattern 310-a (which can simply continue the current transmission beam) is to be used for the next N time slots. In response to the indication received from the base station 105-a, the UE can switch to the first rewrite pattern 310-a and continue monitoring the first transmission beam 315 until time slot 75, and then can switch back to the first beam monitoring pattern 305-a at time slot 76. Then, if the rewrite action continues, the base station 105-b can decide at time slot 76 that the first rewrite pattern 310-a is to be used again; otherwise, the base station 105-b and the UE 115-a both fall back to the first monitoring pattern 305-a. In another example, the first rewrite pattern 310-a is considered a fallback pattern, and the base station 105-b and the UE 115-a both fall back to the first rewrite pattern 310-a when operating in fallback mode. In some examples, UE 115 - a may instruct base station 105 - b to move to the first rewrite pattern 310 - a , and base station 105 - b may make the final decision based on UE feedback.

[0068] In some cases, UE 115-a may observe (e.g., based on the number of successful receptions, channel measurements, or a combination thereof) that control channel transmissions using first transmission beam 315 meet a reliability threshold for a defined number of time slots and indicate to base station 105-b to use first rewrite pattern 310-a for the next N time slots. In such a case, base station 105-b may confirm the switch and, before switching back, apply the rewrite monitoring pattern for the next N time slots and re-evaluate before the rewrite duration expires.

[0069] In some cases, both the base station 105-b and the UE 115-a may autonomously switch from the configured monitoring pattern. In this case, the UE 115-a may observe that the transmission using the first transmission beam 315 meets the reliability threshold for a set number of time slots, and the base station 105-b may make a similar determination based on the same set of metrics. Such a metric may be a predetermined threshold metric that may be specified or configured by the base station 105-b. Since the reliability threshold metric has been met at both the base station 105-b and the UE 115-a (e.g., at time slot 36), the base station 105-b and the UE 115-a may both rewrite their monitoring patterns with a rewrite pattern (e.g., the first rewrite pattern 310-a) for the next N time slots and may perform reassessment again after the set number of time slots. Thus, when the transmission beam used for the control channel transmission has good reliability, such a scheme has reduced signaling overhead and provides robustness for the control channel transmission, while also allowing for more efficient utilization of resources.

[0070] Figure 4 An example of a process flow 400 for supporting dynamic rewriting of a control beam monitoring configuration according to various aspects of the present disclosure is shown. The process flow 400 includes a UE 115-b and a base station 105-c, each of which may be a UE 115-b and a base station 105-c, each of which may be a UE 115-c. Figures 1 to 3 Examples of corresponding devices are described.

[0071] At 405, the UE 115-b and the base station 105-c may establish communication using one or more active beams. At 410, the base station 105-c may identify (e.g., via a MAC CE or DCI transmission) a beam monitoring pattern to be used to monitor control channel transmissions. In some cases, the monitoring pattern may include one or more configured monitoring patterns and one or more override patterns. In some cases, the configured monitoring pattern and override pattern may be selected from a set of available patterns and configured for control channel transmissions. The base station 105-c may send configuration information 415 to the UE 115-b. The base station 105-c may send a transmit beam with a control channel transmission 420 according to the configured pattern.

[0072] At block 425, UE 115-b may determine feedback (e.g., ACK / NACK feedback) for the control channel transmission 420 sent on the transmit beam. Such feedback may, for example, indicate that the control channel transmission was successfully received at UE 115-b. In some cases, as shown at block 430, UE 115-b may perform measurements on the received beam. Such measurements may include, for example, CQI measurements that may be performed periodically (e.g., every 5 ms). UE 115-b may send ACK / NACK feedback 435 and one or more measurement reports 440 to base station 105-c.

[0073] At block 445, UE 115-b may determine whether to rewrite the configured monitoring pattern. For example, such a determination may be made according to the techniques described above, and such a determination may be based on the reliability of transmissions on the first subset of transmission beams. Similarly, at block 450, base station 105-c may determine whether to rewrite the configured monitoring pattern. For example, such a determination may also be based on the reliability of transmissions on the first subset of transmission beams. As described above, in some examples, such a determination may be an implicit determination made at one or both of UE 115-b or base station 105-c, and separate signaling may not be required.

[0074] In an example where an indication of an override is provided, the base station 105-c or the UE 115-b or both may send an override indication 455 and, in some cases, may receive an acknowledgment of the override. In some cases, the override indication 455 may not be sent, and both the UE 115-b and the base station 105-c may autonomously switch to an override pattern or continue with the current transmission beam or subset of transmission beams. The base station 105-c may send a transmission beam 460 with a control channel transmission according to the override pattern, which may be to continue transmitting using the transmission beam determined to meet the reliability threshold. At blocks 465 and 470, in some cases, the UE 115-b and the base station 105-c may reassess channel reliability and determine whether to continue or stop the override.

[0075] In some cases, after a set duration (e.g., a set number of time slots), the base station 105-c and the UE 115-b may fall back to the configured monitoring pattern. In some cases, the base station 105-c and the UE 115-b may fall back to the configured monitoring pattern without successfully receiving any transmissions using the overwritten pattern.

[0076] Figure 5 A block diagram 500 illustrates a wireless device 505 that supports dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure. The wireless device 505 can be an example of aspects of the base station 105 as described herein. The wireless device 505 can include a receiver 510, a base station beam manager 515, and a transmitter 520. The wireless device 505 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0077] The receiver 510 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channel information, data channel information, and information related to dynamic rewriting of control beam monitoring configurations). The information may be passed to other components of the device 505. The receiver 510 may be a reference Figure 8 Examples of various aspects of the transceiver 835 are described. The receiver 510 may utilize a single antenna or a group of antennas.

[0078] The base station beam manager 515 may be a reference Figure 8 Examples of various aspects of the base station beam manager 815 are described.

[0079] At least a portion of the base station beam manager 515 and / or its various subcomponents may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functionality of at least a portion of the base station beam manager 515 and / or its various subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The base station beam manager 515 and / or its various subcomponents may be physically located at various locations, including being distributed such that various portions of functionality are implemented by one or more physical devices at different physical locations. In some examples, according to various aspects of the present disclosure, at least a portion of the base station beam manager 515 and / or its various subcomponents may be separate and distinct components. In other examples, according to various aspects of the present disclosure, at least a portion of the base station beam manager 515 and / or its various subcomponents can be combined with one or more other hardware components, including but not limited to I / O components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0080] The base station beam manager 515 may identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset. The base station beam manager 515 may also cause the control channel transmission to be transmitted during the first time period subset using the first transmission beam subset, and determine that the transmitted first transmission beam subset exceeds a reliability threshold during the first time period subset. In response to determining that the transmitted first transmission beam subset exceeds the reliability threshold, the base station beam manager 515 may cause the transmission to continue using the first transmission beam subset for at least a portion of the second time period subset.

[0081] The transmitter 520 may transmit signals generated by other components of the wireless device 505. In some examples, the transmitter 520 may be co-located with the receiver 510 in a transceiver module. For example, the transmitter 520 may be a reference Figure 8 Examples of various aspects of the transceiver 835 are described. The transmitter 520 may utilize a single antenna or a group of antennas.

[0082] Figure 6A block diagram 600 of a wireless device 605 supporting dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure is shown. The wireless device 605 may be a wireless device 605 as described with reference to FIG. Figure 5 Examples of various aspects of the described wireless device 505 or base station 105. The wireless device 605 may include a receiver 610, a base station beam manager 615, and a transmitter 620. The wireless device 605 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0083] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channel information, data channel information, and information related to dynamic rewriting of control beam monitoring configurations). The information may be passed to other components of the device 605. The receiver 610 may be a reference to Figure 8 Examples of various aspects of the transceiver 835 are described. The receiver 610 may use a single antenna or a group of antennas.

[0084] The base station beam manager 615 may be a reference Figure 8 Examples of various aspects of the described base station beam manager 815. The base station beam manager 615 may also include a monitoring pattern manager 625, a beam transmission manager 630, a measurement manager 635, and a pattern rewrite manager 640.

[0085] The monitoring pattern manager 625 may identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset. In some cases, the first beam monitoring pattern is selected from a set of available beam monitoring patterns based on channel conditions between the UE and the base station, and the second beam monitoring pattern is selected from a set of overriding beam monitoring patterns. In some cases, the second beam monitoring pattern is used when continuing to transmit using the first transmission beam subset for at least a portion of the second time period subset. In some cases, the first transmission beam subset includes a first transmission beam, and the second transmission beam subset includes a second transmission beam, wherein the second transmission beam is a weaker transmission beam than the first transmission beam. In some cases, the control channel transmission transmitted using the second transmission beam is transmitted at a higher power, a higher aggregation level, or any combination thereof relative to the control channel transmission transmitted using the first transmission beam. In some cases, the first beam monitoring pattern maps a first subset of transmission beams to a first number of time slots in a first subset of time periods and maps a second subset of transmission beams to a second number of time slots in a second subset of time periods.

[0086] The beam transmission manager 630 may use the first transmission beam subset to transmit control channel transmissions during the first time period subset. The measurement manager 635 may determine that the transmitted first transmission beam subset exceeds a reliability threshold during the first time period subset. In some cases, such a determination may include determining that a predetermined number of acknowledgments were received during the first time period subset, that a signal quality of the first transmission beam subset exceeds a signal quality threshold, or any combination thereof, and wherein an indication of the determination is transmitted to the UE.

[0087] The pattern rewrite manager 640 may indicate that a configured beam monitoring pattern is to be rewritten. In some cases, an indication that the first transmission beam subset is to be continued may be signaled to the UE, and an acknowledgement of the indication may be received from the UE. In such a case, transmission using the first transmission beam subset may continue for at least a portion of the second time period subset. In some cases, the determination includes receiving an indication from the UE that the transmitted first transmission beam subset exceeds a reliability threshold, and confirming receipt of the indication. In some cases, the indication is received in a MAC CE or in UCI received from the UE. In some cases, the monitoring pattern may be rewritten autonomously at the UE and at the base station. In some cases, continuing transmission using the first transmission beam subset includes continuing transmission using the first transmission beam subset for an identified duration, and resuming the first beam monitoring pattern after expiration of the identified duration. In some cases, continuing to transmit using the first transmission beam subset further includes: determining, before expiration of the identified duration, that the sent first transmission beam subset continues to exceed a reliability threshold; and continuing to transmit using the first transmission beam subset for another identified duration.

[0088] The transmitter 620 can transmit signals generated by other components of the wireless device 605. In some examples, the transmitter 620 can be co-located with the receiver 610 in a transceiver module. For example, the transmitter 620 can be a reference Figure 8 Examples of aspects of the transceiver 835 are described. The transmitter 620 may utilize a single antenna or a group of antennas.

[0089] Figure 7 A block diagram 700 illustrates a base station beam manager 715 that supports dynamic rewriting of control beam monitoring configurations in accordance with aspects of the present disclosure. The base station beam manager 715 may be a reference Figure 5 、 68 and 9. The base station beam manager 715 may include a monitoring pattern manager 720, a beam transmission manager 725, a measurement manager 730, a pattern rewrite manager 735, and a configuration manager 740. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0090] The monitoring pattern manager 720 may identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset. In some cases, the first beam monitoring pattern is selected from a set of available beam monitoring patterns based on channel conditions between the UE and the base station, and the second beam monitoring pattern is selected from a set of overriding beam monitoring patterns.

[0091] In some cases, a second beam monitoring pattern is used while continuing to transmit using the first transmission beam subset for at least a portion of the second time period subset. In some cases, the first transmission beam subset includes a first transmission beam and the second transmission beam subset includes a second transmission beam, and wherein the second transmission beam is a weaker transmission beam than the first transmission beam. In some cases, control channel transmissions sent using the second transmission beam are sent at a higher power, a higher aggregation level, or any combination thereof relative to control channel transmissions sent using the first transmission beam.

[0092] The beam transmission manager 725 may use the first transmission beam subset to transmit control channel transmissions during the first time period subset. The measurement manager 730 may determine that the transmitted first transmission beam subset exceeds a reliability threshold during the first time period subset. In some cases, the determination may include determining that a predetermined number of acknowledgments were received during the first time period subset, that a signal quality of the first transmission beam subset exceeded a signal quality threshold, or any combination thereof, and wherein an indication of the determination is transmitted to the UE.

[0093] The pattern rewrite manager 735 may indicate that the configured beam monitoring pattern is to be rewritten. In some cases, an indication that the first transmission beam subset is to be continued may be signaled to the UE, and an acknowledgement of the indication may be received from the UE. In such a case, transmission using the first transmission beam subset may continue for at least a portion of the second time period subset. In some cases, determining includes receiving an indication from the UE that the transmitted first transmission beam subset exceeds a reliability threshold, and acknowledging receipt of the indication.

[0094] In some cases, the indication is received in a MAC CE or in UCI received from the UE. In some cases, the monitoring pattern can be rewritten autonomously at the UE and at the base station. In some cases, continuing to transmit using the first transmission beam subset includes: continuing to transmit using the first transmission beam subset for an identified duration, and resuming the first beam monitoring pattern after the identified duration expires. In some cases, continuing to transmit using the first transmission beam subset also includes: determining, before the identified duration expires, that the transmitted first transmission beam subset continues to exceed a reliability threshold; and continuing to transmit using the first transmission beam subset for another identified duration.

[0095] The configuration manager 740 may configure the UE with a first beam monitoring pattern and one or more parameters for making a determination to override use of the second transmission beam subset of the beam monitoring pattern and to continue using the first transmission beam subset for at least a portion of the second time period subset. In some cases, an indication may be sent to the UE indicating that the first transmission beam subset is to be used for at least a portion of the second time period subset. In some cases, the configuration manager 740 may configure the UE to determine whether the transmitted first transmission beam subset exceeds a reliability threshold during the first time period subset, and configure the UE to continue using the first transmission beam subset for at least a portion of the second time period subset based on the determination.

[0096] In some cases, the configuration is semi-statically provided to the UE using control channel signaling, such as radio resource control (RRC) signaling. In some cases, the indication indicates that the first transmission beam subset is to be used for both the first time period subset and the second time period subset for an identified duration. In some cases, the identified duration may be indicated by the indication or may be pre-configured. In some cases, the indication may be sent in a MAC CE or in a DCI included in a control channel transmission. In some cases, the configuration includes configuring the UE to have the same or similar set of metrics as the base station for determining to continue using the first transmission beam subset for at least the portion of the second time period subset.

[0097] Figure 8 A diagram of a system 800 including a device 805 that supports dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure is shown. The device 805 may be, for example, a reference Figure 5 and 6Examples of wireless devices 505, wireless devices 605, or base stations 105 as described above, or including components thereof. Device 805 may include components for two-way voice and data communications, including components for sending communications and receiving communications, including a base station beam manager 815, a processor 820, a memory 825, software 830, a transceiver 835, an antenna 840, a network communication manager 845, and an inter-station communication manager 850. These components may communicate electronically via one or more buses (e.g., bus 810). Device 805 may communicate wirelessly with one or more UEs 115.

[0098] The processor 820 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 820 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 820. The processor 820 may be configured to execute computer-readable instructions stored in the memory to perform various functions (e.g., a function or task that supports dynamic rewriting of the control beam monitoring configuration).

[0099] The memory 825 may include random access memory (RAM) and read-only memory (ROM). The memory 825 may store computer-readable, computer-executable software 830 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 825 may also include a basic input / output system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0100] The software 830 may include code for implementing various aspects of the present disclosure, including code to support dynamic rewriting of control beam monitoring configurations. The software 830 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software 830 may not be directly executed by a processor, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0101] As described above, the transceiver 835 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, the transceiver 835 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 835 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission and to demodulate packets received from the antenna.

[0102] In some cases, device 805 may include a single antenna 840. However, in some cases, a device may have more than one antenna 840, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0103] The network communications manager 845 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 845 may manage the transmission of data communications for client devices, such as one or more UEs 115.

[0104] The inter-site communication manager 850 can manage communications with other base stations 105 and can include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-site communication manager 850 can coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 850 can provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0105] Figure 9 A block diagram 900 of a wireless device 905 that supports dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure is shown. The wireless device 905 can be an example of aspects of the UE 115 as described herein. The wireless device 905 can include a receiver 910, a UE beam manager 915, and a transmitter 920. The wireless device 905 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0106] The receiver 910 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channel information, data channel information, and information related to dynamic rewriting of control beam monitoring configurations, etc.). The information may be passed to other components of the device 905. The receiver 910 may be a reference Figure 12 Examples of various aspects of the transceiver 1235 are described. The receiver 910 may use a single antenna or a group of antennas.

[0107] UE beam manager 915 may be a reference Figure 12 Examples of various aspects of the UE beam manager 1215 are described.

[0108] At least a portion of the UE beam manager 915 and / or its various subcomponents may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functionality of at least a portion of the UE beam manager 915 and / or its various subcomponents may be performed by a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The UE beam manager 915 and / or its various subcomponents may be physically located at various locations, including being distributed such that the functionality of each portion is implemented by one or more physical devices at different physical locations.

[0109] In some examples, according to various aspects of the present disclosure, the UE beam manager 915 and / or at least a portion of its various subcomponents can be separate and distinct components. In other examples, according to various aspects of the present disclosure, the UE beam manager 915 and / or at least a portion of its various subcomponents can be combined with one or more other hardware components, including but not limited to I / O components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0110] The UE beam manager 915 may identify a beam monitoring pattern for monitoring control channel transmissions on a transmission beam from a base station. In some examples, the beam monitoring pattern may indicate that the control channel transmission is to be sent using a first transmission beam subset in a first time period subset, and indicate that the control channel transmission is to be sent using a second transmission beam subset in a second time period subset. The UE beam manager 915 may also receive control channel transmissions on the first transmission beam subset during the first time period subset. The UE beam manager 915 may determine that the transmitted first transmission beam subset exceeds a reliability threshold during the first time period subset, and in response to the determination, continue to receive control channel transmissions using the first transmission beam subset for at least a portion of the second time period subset.

[0111] The transmitter 920 may transmit signals generated by other components of the device. In some examples, the transmitter 920 may be co-located with the receiver 910 in a transceiver module. For example, the transmitter 920 may be a reference Figure 12 Examples of various aspects of the transceiver 1235 are described. The transmitter 920 can utilize a single antenna or a group of antennas.

[0112] Figure 10A block diagram 1000 of a wireless device 1005 supporting dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure is shown. The wireless device 1005 may be a wireless device 1005 configured as described with reference to FIG. Figure 9 Examples of various aspects of the described wireless device 905 or UE 115. The wireless device 1005 may include a receiver 1010, a UE beam manager 1015, and a transmitter 1020. The wireless device 1005 may also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0113] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channel information, data channel information, and information related to dynamic rewriting of control beam monitoring configurations). The receiver 1010 may communicate this and other information to other components of the wireless device 1005. The receiver 1010 may be a reference to Figure 12 Examples of various aspects of the transceiver 1235 are described. The receiver 1010 may use a single antenna or a group of antennas.

[0114] UE beam manager 1015 may be a reference Figure 12 Examples of various aspects of the UE beam manager 1215 are described. The UE beam manager 1015 may also include a monitoring pattern manager 1025, a beam monitoring manager 1030, a measurement manager 1035, and a pattern rewrite manager 1040.

[0115] The monitoring pattern manager 1025 can identify a beam monitoring pattern for monitoring a control channel transmission on a transmission beam from a base station, the beam monitoring pattern indicating that the control channel transmission is to be sent using a first transmission beam subset in a first time period subset, and indicating that the control channel transmission is to be sent using a second transmission beam subset in a second time period subset.

[0116] The beam monitoring manager 1030 may receive control channel transmissions during a first subset of time periods on a first subset of transmission beams.

[0117] The measurement manager 1035 may determine that the transmitted first transmission beam subset exceeds a reliability threshold during the first subset of time periods. In some cases, the determination includes determining that a predetermined number of acknowledgments are received during the first subset of time periods, determining that a signal quality of the first transmission beam subset exceeds a signal quality threshold, or any combination thereof.

[0118] The pattern rewrite manager 1040 may rewrite the configured monitoring pattern and continue to use the first transmission beam subset to receive control channel transmissions for at least a portion of the second time period subset. In some cases, an indication may be received from the base station indicating that the first transmission beam subset is to be used for at least a portion of the second time period subset. In some cases, the indication indicates that the first transmission beam subset is to be used for both the first time period subset and the second time period subset for an identified duration. In some cases, the identified duration is indicated by the indication or is preconfigured. In some cases, the indication is sent in a MAC CE or in DCI included with the control channel transmission.

[0119] In some cases, the wireless device 1005 may send an indication to the base station that the transmitted first transmission beam subset exceeds a reliability threshold, and receive an acknowledgment of receipt of the indication, wherein continuing to receive the control channel transmission using the first transmission beam subset is performed in response to receiving the acknowledgment. In some cases, the indication is sent in a MAC CE or in a UCI. In some cases, continuing to receive the control channel transmission using the first transmission beam subset includes continuing to receive the control channel transmission using the first transmission beam subset for an identified duration, and resuming the first beam monitoring pattern after expiration of the identified duration. In some cases, continuing to receive the control channel transmission using the first transmission beam subset also includes determining, before expiration of the identified duration, that the transmitted first transmission beam subset continues to exceed the reliability threshold, and continuing to receive the control channel transmission using the first transmission beam subset for another identified duration.

[0120] The transmitter 1020 may transmit signals generated by other components of the wireless device 1005. In some examples, the transmitter 1020 may be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1020 may be a reference Figure 12 Examples of various aspects of the transceiver 1235 are described. The transmitter 1020 can utilize a single antenna or a group of antennas.

[0121] Figure 11 A block diagram 1100 illustrates a UE beam manager 1115 that supports dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure. The UE beam manager 1115 may be a reference Figure 9 、 1012 and 12. The UE beam manager 1115 may include a monitoring pattern manager 1120, a beam monitoring manager 1125, a measurement manager 1130, a pattern rewrite manager 1135, and a configuration manager 1140. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0122] The monitoring pattern manager 1120 may identify a beam monitoring pattern for monitoring control channel transmissions on transmission beams from a base station. The beam monitoring pattern may indicate that the control channel transmissions are to be transmitted using a first transmission beam subset in a first time period subset and that the control channel transmissions are to be transmitted using a second transmission beam subset in a second time period subset. In some cases, the first beam monitoring pattern maps the first transmission beam subset to a first number of time slots in the first time period subset and maps the second transmission beam subset to a second number of time slots in the second time period subset.

[0123] The beam monitoring manager 1125 may receive control channel transmissions during a first subset of time periods on a first subset of transmission beams.

[0124] The measurement manager 1130 may determine that the transmitted first transmission beam subset exceeds a reliability threshold during the first subset of time periods. In some cases, the determination includes determining that a predetermined number of acknowledgments are received during the first subset of time periods, determining that a signal quality of the first transmission beam subset exceeds a signal quality threshold, or any combination thereof.

[0125] The pattern rewrite manager 1135 may rewrite the configured monitoring pattern and continue to use the first transmission beam subset to receive control channel transmissions for at least a portion of the second time period subset. In some cases, an indication may be received from the base station indicating that the first transmission beam subset is to be used for at least a portion of the second time period subset. In some cases, the indication indicates that the first transmission beam subset is to be used for both the first time period subset and the second time period subset for an identified duration. In some cases, the identified duration is indicated by the indication or is preconfigured. In some cases, the indication is sent in a MAC CE or in DCI included with the control channel transmission.

[0126] In some cases, the UE beam manager 1115 may send an indication to the base station that the transmitted first transmission beam subset exceeds a reliability threshold, and receive an acknowledgment of receipt of the indication, wherein continuing to receive the control channel transmission using the first transmission beam subset is performed in response to receiving the acknowledgment. In some cases, the indication is sent in a MAC CE or in a UCI. In some cases, continuing to receive the control channel transmission using the first transmission beam subset includes continuing to receive the control channel transmission using the first transmission beam subset for an identified duration, and resuming the first beam monitoring pattern after expiration of the identified duration. In some cases, continuing to receive the control channel transmission using the first transmission beam subset also includes determining, before expiration of the identified duration, that the transmitted first transmission beam subset continues to exceed the reliability threshold, and continuing to receive the control channel transmission using the first transmission beam subset for another identified duration.

[0127] The configuration manager 1140 may receive configuration information having a first beam monitoring pattern and one or more parameters for making a determination to override use of a second transmission beam subset for the beam monitoring pattern and to continue using the first transmission beam subset for at least a portion of a second time period subset. In some cases, the configuration manager 1140 may receive configuration information from a base station to determine whether the first transmission beam subset transmitted during the first time period subset exceeds a reliability threshold and to continue using the first transmission beam subset for at least the portion of the second time period subset based on the determination result. In some cases, continuing to receive control channel transmissions using the first transmission beam subset is performed autonomously at the base station and at the UE beam manager 1115. In some cases, the configuration information is received semi-statically using control channel signaling (e.g., RRC signaling).

[0128] Figure 12 A diagram of a system 1200 including a device 1205 that supports dynamic rewriting of control beam monitoring configurations according to aspects of the present disclosure is shown. The device 1205 may be, for example, a reference Figure 1 As described above, the example of UE 115 may include components of UE 115. Device 1205 may include components for two-way voice and data communication, including components for sending and receiving communications, including a UE beam manager 1215, a processor 1220, memory 1225, software 1230, a transceiver 1235, an antenna 1240, and an I / O controller 1245. These components may communicate electronically via one or more buses (e.g., bus 1210). Device 1205 may communicate wirelessly with one or more base stations 105.

[0129] The processor 1220 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 1220 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 1220. The processor 1220 may be configured to execute computer-readable instructions stored in the memory to perform various functions (e.g., a function or task that supports dynamic rewriting of the control beam monitoring configuration).

[0130] The memory 1225 may include RAM and ROM. The memory 1225 may store computer-readable, computer-executable software 1230 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 1225 may also include a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0131] The software 1230 may include code for implementing various aspects of the present disclosure, including code to support dynamic rewriting of control beam monitoring configurations. The software 1230 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software 1230 may not be directly executed by a processor, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0132] As described above, transceiver 1235 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, transceiver 1235 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1235 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission and to demodulate packets received from the antenna.

[0133] In some cases, the device 1205 may include a single antenna 1240. However, in some cases, the device 1205 may have more than one antenna 1240, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0134] I / O controller 1245 can manage input and output signals for device 1205. I / O controller 1245 can also manage peripherals that are not integrated into device 1205. In some cases, I / O controller 1245 can represent a physical connection or port to an external peripheral. In some cases, I / O controller 1245 can utilize a variety of interfaces such as or other known operating systems. In other cases, I / O controller 1245 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1245 may be implemented as part of a processor. In some cases, a user may interact with device 1205 via I / O controller 1245 or via hardware components controlled by I / O controller 1245.

[0135] Figure 13 A flowchart is shown illustrating a method 1300 for dynamically rewriting a control beam monitoring configuration according to aspects of the present disclosure. The operations of the method 1300 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 1300 may be implemented by the base station 105 or components thereof as described herein. Figures 5 to 8 In some examples, base station 105 may execute a set of codes to control functional elements of the device to perform the functions described below. Additionally or alternatively, base station 105 may use dedicated hardware to perform various aspects of the functions described below.

[0136] At block 1305, the base station 105 may identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset. The operations of block 1305 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1305 may be performed as described with reference to Figures 6 to 7 The monitoring pattern manager described is executed.

[0137] At block 1310, the base station 105 may transmit a control channel transmission during a first subset of time periods using a first subset of transmission beams. The operations of block 1310 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1310 may be performed as described with reference to Figures 6 to 7 The beam transmission manager described here is executed.

[0138] At block 1315, the base station 105 may determine that the first subset of transmission beams transmitted during the first subset of time periods exceeds a reliability threshold. The operations of block 1315 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1315 may be as described with reference to Figures 6 to 7 Described in the measurement manager to perform.

[0139] At block 1320, the base station 105 may, in response to the determination, continue to transmit using the first transmission beam subset for at least a portion of the second time period subset. The operations of block 1320 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1320 may be as described with reference to Figures 6 to 7 Describes the pattern rewrite manager to perform.

[0140] In some examples, method 1300 may include determining that a first transmission beam subset transmitted during a first time period subset does not exceed a reliability threshold. Method 1300 may also include identifying a second beam monitoring pattern for transmitting a control channel transmission, the second beam monitoring pattern indicating that the control channel transmission is to be transmitted using a third transmission beam subset during a third time period subset, and indicating that the control channel transmission is to be transmitted using a fourth transmission beam subset during a fourth time period subset. Method 1300 may also include overwriting the first beam monitoring pattern with the second beam monitoring pattern.

[0141] Figure 14 A flowchart is shown illustrating a method 1400 for dynamically rewriting a control beam monitoring configuration according to aspects of the present disclosure. The operations of the method 1400 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 1400 may be implemented by the base station 105 or components thereof as described herein. Figures 5 to 8 In some examples, base station 105 may execute a set of codes to control functional elements of the device to perform the functions described below. Additionally or alternatively, base station 105 may use dedicated hardware to perform various aspects of the functions described below.

[0142] At block 1405, the base station 105 may identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset. The operations of block 1405 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1405 may be performed as described with reference to Figures 6 to 7 The monitoring pattern manager described is executed.

[0143] At block 1410, the base station 105 may configure the UE with the first beam monitoring pattern and one or more parameters for making a determination to override use of the second transmission beam subset of the beam monitoring pattern and continue to use the first transmission beam subset for at least a portion of the second time period subset. The operations of block 1410 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1410 may be performed as described with reference to Figure 7Describes the configuration manager to perform.

[0144] At block 1415, the base station 105 may transmit a control channel transmission during the first subset of time periods using the first subset of transmission beams. The operations of block 1415 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1415 may be performed as described with reference to Figures 6 to 7 The beam transmission manager described here is executed.

[0145] At block 1420, the base station 105 may determine that the first subset of transmission beams transmitted during the first subset of time periods exceeds a reliability threshold. The operations of block 1420 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1420 may be as described with reference to Figures 6 to 7 Described in the measurement manager to perform.

[0146] At block 1425, the base station 105 may, in response to the determination, continue to transmit using the first transmission beam subset for at least a portion of the second time period subset. The operations of block 1425 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1425 may be as described with reference to Figures 6 to 7 Describes the pattern rewrite manager to perform.

[0147] Figure 15 A flowchart is shown illustrating a method 1500 for dynamically rewriting a control beam monitoring configuration according to aspects of the present disclosure. The operations of the method 1500 may be implemented by the base station 105 or components thereof as described herein. For example, the operations of the method 1500 may be implemented by the base station 105 or components thereof as described herein. Figures 5 to 8 In some examples, base station 105 may execute a set of codes to control functional elements of the device to perform the functions described below. Additionally or alternatively, base station 105 may use dedicated hardware to perform various aspects of the functions described below.

[0148] At block 1505, the base station 105 may identify a first beam monitoring pattern for transmitting a control channel transmission, the first beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset. The operations of block 1505 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1505 may be performed as described with reference to Figures 6 to 7 The monitoring pattern manager described is executed.

[0149] At block 1510, the base station 105 may transmit a control channel transmission during a first subset of time periods using a first subset of transmission beams. The operations of block 1510 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1510 may be as described with reference to Figures 6 to 7 The beam transmission manager described is executed.

[0150] At block 1515, the base station 105 may determine that the first subset of transmission beams transmitted during the first subset of time periods exceeds a reliability threshold. The operations of block 1515 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1515 may be as described with reference to Figures 6 to 7 Described in the measurement manager to perform.

[0151] At block 1520, the base station 105 may send an indication to the UE that the first transmission beam subset is to be used for at least a portion of the second time period subset. The operations of block 1520 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1520 may be as described with reference to Figure 7 Describes the configuration manager to perform.

[0152] At block 1525, the base station 105 may receive an acknowledgment of the indication from the UE. The operations of block 1525 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1525 may be performed as described with reference to Figures 6 to 7 Describes the pattern rewrite manager to perform.

[0153] At block 1530, the base station 105 may, in response to the determination, continue to transmit using the first transmission beam subset for at least a portion of the second time period subset. The operations of block 1530 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1530 may be as described with reference to Figures 6 to 7 Describes the pattern rewrite manager to perform.

[0154] In some examples, method 1500 may include determining that a first transmission beam subset transmitted during a first time period subset does not exceed a reliability threshold. Method 1500 may also include identifying a second beam monitoring pattern for transmitting a control channel transmission, the second beam monitoring pattern indicating that the control channel transmission is to be transmitted using a third transmission beam subset during a third time period subset, and indicating that the control channel transmission is to be transmitted using a fourth transmission beam subset during a fourth time period subset. Method 1500 may also include overwriting the first beam monitoring pattern with the second beam monitoring pattern.

[0155] Figure 16A flowchart is shown illustrating a method 1600 for dynamically rewriting a control beam monitoring configuration according to aspects of the present disclosure. The operations of the method 1600 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE 115 or a component thereof as described herein. Figures 9 to 12 In some examples, the UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform various aspects of the functions described below.

[0156] At block 1605, the UE 115 may identify a beam monitoring pattern for monitoring a control channel transmission on a transmission beam from a base station, the beam monitoring pattern indicating that the control channel transmission is to be transmitted using a first transmission beam subset in a first time period subset and indicating that the control channel transmission is to be transmitted using a second transmission beam subset in a second time period subset. The operations of block 1605 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1605 may be performed as described with reference to Figures 10 to 11 The monitoring pattern manager described is executed.

[0157] At block 1610, the UE 115 may receive a control channel transmission on a first subset of transmission beams during a first subset of time periods. The operations of block 1610 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1610 may be as described with reference to Figures 10 to 11 The beam monitoring manager described here is implemented.

[0158] At block 1615, the UE 115 may determine that the first transmission beam subset transmitted during the first subset of time periods exceeds a reliability threshold. The operations of block 1615 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1615 may be as described with reference to Figures 10 to 11 Described in the measurement manager to perform.

[0159] At block 1620, the UE 115 may, in response to the determination, continue to receive control channel transmissions using the first transmission beam subset for at least a portion of the second time period subset. The operations of block 1620 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1620 may be as described with reference to Figures 10 to 11 Describes the pattern rewrite manager to perform.

[0160] At optional block 1625, UE 115 may send an acknowledgment of the indication to the base station. The operations of block 1625 may be performed according to the methods described herein. In a specific example, aspects of the operations of block 1625 may be as described with reference to Figures 10 to 11Describes the pattern rewrite manager to perform.

[0161] It should be noted that the above methods describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Furthermore, aspects of two or more methods may be combined.

[0162] The technology described herein can be used in various wireless communication systems, such as CDMA systems, TDMA systems, FDMA systems, OFDMA systems, single-carrier frequency division multiple access (SC-FDMA) systems, and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA). CDMA2000 covers IS-2000, IS-95, and IS-856 standards. IS-2000 versions are commonly referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM).

[0163] OFDMA systems can implement radio technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and the like. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the systems and radio technologies mentioned above, as well as other systems and radio technologies. Although aspects of LTE or NR systems may be described for example, and LTE or NR terminology may be used throughout much of the description, the techniques described herein are applicable beyond LTE or NR applications.

[0164] In LTE / LTE-A networks, including such networks described herein, the term "evolved Node B (eNB)" may be generally used to describe a base station. One or more wireless communication systems described herein may include heterogeneous LTE / LTE-A or NR networks, in which different types of eNBs provide coverage for various geographic areas. For example, each eNB, next-generation Node B (gNB), or base station may provide communication coverage for a macro cell, a small cell, or other type of cell. Depending on the context, the term "cell" may be used to describe a base station, a carrier or component carrier associated with a base station, or a coverage area (e.g., a sector, etc.) of a carrier or base station.

[0165] A base station may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a Node B, an eNode B (eNB), a gNB, a Home Node B, a Home eNode B, or some other suitable term. The geographic coverage area of ​​a base station may be divided into sectors that constitute only a portion of the coverage area. One or more wireless communication systems described herein may include different types of base stations (e.g., macro cell base stations or small cell base stations). The UE described herein may be able to communicate with various types of base stations and network devices including macro eNBs, small cell eNBs, gNBs, relay base stations, etc. Overlapping geographic coverage areas may exist for different technologies.

[0166] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access to UEs 115 with a service subscription with the network provider. Compared to a macro cell, a small cell is a lower-power base station that can operate in the same or different frequency bands (e.g., licensed, unlicensed, etc.) than the macro cell. According to various examples, small cells may include pico cells, femto cells, and micro cells. For example, a pico cell may cover a smaller geographic area and can allow unrestricted access to UEs 115 with a service subscription with the network provider. A femto cell may also cover a smaller geographic area (e.g., a home) and can provide restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users at home, etc.). An eNB for a macro cell may be referred to as a macro eNB. An eNB for a small cell may be referred to as a small cell eNB, pico eNB, femto eNB, or home eNB. An eNB may support one or more (e.g., two, three, four, etc.) cells (e.g., component carriers).

[0167] One or more wireless communication systems described herein may support synchronous operation or asynchronous operation. For synchronous operation, base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, base stations may have different frame timing, and transmissions from different base stations may not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operation.

[0168] Downlink transmissions described herein may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions. Each communication link described herein—for example, including Figure 1 and 2 The wireless communication systems 100 and 200 may include one or more carriers, where each carrier may be a signal composed of multiple subcarriers (eg, waveform signals at different frequencies).

[0169] The description given herein in conjunction with the accompanying drawings describes example configurations and does not represent all examples that can be implemented or within the scope of the claims. The term "exemplary" as used herein means "serving as an example, instance, or illustration," rather than "preferred" or "more advantageous than other examples." The detailed description includes specific details to provide an understanding of the described technology. However, these technologies can be implemented without these specific details. In some cases, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0170] In the accompanying drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number to distinguish between the similar components. If only the first reference number is used in the specification, the description applies to any similar component having the same first reference number, regardless of the second reference number.

[0171] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0172] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any conventional 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, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0173] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, these functions can be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these items. The features used to implement the functions can also be physically located in various locations, including being distributed so that the various parts of the functions are implemented at different physical locations. In addition, as used herein, including in the claims, as used in a list of items (e.g., a list of items beginning with a phrase such as "at least one" or "one or more"), "or" indicates an inclusive list, so that, for example, a list of at least one of A, B, or C represents A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Moreover, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, exemplary steps described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0174] Computer-readable medium comprises both non-transitory computer storage medium and communication medium, and described communication medium comprises and promotes any medium that computer program is transferred from one place to another.Non-transitory storage medium can be any available medium that can be accessed by general or special-purpose computer.As an example and not limitation, non-transitory computer-readable medium can comprise RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disc (CD) ROM or other optical disk storage, disk storage or other disk storage device, or can be used for carrying or storing desired program code unit in the form of instruction or data structure and any other non-transitory medium that can be accessed by general or special-purpose computer or general or special-purpose processor.Moreover, any connection is all appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, optical cable, twisted pair, digital subscriber line (DSL) or wireless technology (for example, infrared, radio and microwave), then coaxial cable, optical cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of medium. Disk and disc, as used herein, include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0175] The description herein is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be 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 the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be construed to the widest extent consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication, comprising: sending a control channel transmission according to a first beam monitoring pattern in a set of beam monitoring patterns; Based at least in part on a determination to override the first beam monitoring pattern with a second beam monitoring pattern from the set of beam monitoring patterns during a time duration, sending a control channel transmission according to the second beam monitoring pattern during the time duration; and After the duration, a control channel transmission is sent according to the first beam monitoring mode.

2. The method according to claim 1, further comprising: Based at least in part on one or more first transmission beams of the first beam monitoring mode exceeding one or more reliability metrics, an indication is sent to a user equipment (UE) to indicate use of the second beam monitoring mode.

3. The method according to claim 2, wherein: Sending the instruction includes: The indication is sent in a Medium Access Control (MAC) Control Element (CE) or in Downlink Control Information (DCI).

4. The method according to claim 2, wherein: Sending the instruction includes: The indication is sent in one or more of the control channel transmissions sent according to the first beam monitoring mode.

5. The method according to claim 2, wherein: The duration is a number of time slots.

6. The method according to claim 2, further comprising: determining, before expiration of the duration, that the one or more first transmission beams of the first beam monitoring mode continue to exceed the one or more reliability metrics; as well as Based at least in part on the determination, continuing to send control channel transmissions in one or more second transmission beams of the second beam monitoring pattern for a second iteration of the duration.

7. The method according to claim 6, wherein: At least one transmission beam from the one or more second transmission beams is different from at least one transmission beam from the one or more first transmission beams.

8. The method according to claim 2, further comprising: determining, prior to expiration of the duration, that the one or more first transmission beams of the first beam monitoring mode fail to meet or exceed the one or more reliability metrics; as well as Switching back to sending the control channel transmission in the one or more first transmission beams according to the first beam monitoring mode is performed based at least in part on the determination.

9. The method according to claim 2, wherein: The first beam monitoring mode maps a first subset of transmission beams from the one or more first transmission beams of the first beam monitoring mode to a first number of time slots in a first time period subset within the duration, and maps a second subset of transmission beams from the one or more first transmission beams of the first beam monitoring mode to a second number of time slots in a second time period subset within the duration.

10. The method according to claim 2, further comprising: Determining that the one or more first transmission beams in the first beam monitoring mode exceed the one or more reliability metrics is based at least in part on: determining that a predetermined number of acknowledgments are received during a given time period; determining that a signal quality associated with the one or more first transmission beams satisfies a signal quality threshold; or any combination thereof.

11. The method according to claim 2, further comprising: Determining that the one or more first transmission beams of the first beam monitoring mode exceed the one or more reliability metrics is based at least in part on: receiving an indication from a user equipment (UE) that the one or more first transmission beams exceed a reliability threshold; as well as Acknowledge receipt of the instruction.

12. An apparatus for wireless communication, comprising: processor; a memory in electronic communication with the processor; as well as Instructions, which are stored in the memory and, when executed by the processor, are operable to cause the apparatus to: sending a control channel transmission according to a first beam monitoring pattern in a set of beam monitoring patterns; Based at least in part on a determination to override the first beam monitoring pattern with a second beam monitoring pattern from the set of beam monitoring patterns for a time duration, sending a control channel transmission according to the second beam monitoring pattern during the time duration; and After the duration, a control channel transmission is sent according to the first beam monitoring mode.

13. The device according to claim 12, wherein When the instructions are executed by the processor, the apparatus further causes the apparatus to perform the following operations: Based at least in part on one or more first transmission beams of the first beam monitoring mode exceeding one or more reliability metrics, an indication is sent to a user equipment (UE) to indicate use of the second beam monitoring mode.

14. The device according to claim 13, wherein When the processor executes the instruction for sending the indication, the processor further causes the apparatus to perform the following operations: The indication is sent in a Medium Access Control (MAC) Control Element (CE) or in Downlink Control Information (DCI).

15. The device according to claim 13, wherein When the processor executes the instruction for sending the indication, the processor further causes the apparatus to perform the following operations: The indication is sent in one or more of the control channel transmissions sent according to the first beam monitoring mode.

16. The device according to claim 13, wherein The duration is a number of time slots.

17. A method for wireless communication, comprising: receiving a control channel transmission according to a first beam monitoring pattern from a set of beam monitoring patterns; receiving a control channel transmission according to a second beam monitoring pattern during a time duration based at least in part on a determination to override the first beam monitoring pattern with a second beam monitoring pattern from the set of beam monitoring patterns during the time duration; and After the duration, a control channel transmission is received according to the first beam monitoring mode.

18. The method according to claim 17, further comprising: An indication is received to utilize the second beam monitoring mode based at least in part on one or more first transmission beams of the first beam monitoring mode exceeding one or more reliability metrics.

19. The method according to claim 18, wherein Receiving the indication includes: The indication is received in a medium access control (MAC) control element (CE) or in uplink control information (UCI).

20. The method according to claim 18, wherein The duration is preconfigured or indicated in the indication.

21. The method according to claim 18, wherein The duration is a number of time slots.

22. The method of claim 18, further comprising: determining, before expiration of the duration, that the one or more first transmission beams of the first beam monitoring mode continue to exceed the one or more reliability metrics; as well as Based at least in part on the determination, continuing to receive the control channel transmission according to the second beam monitoring pattern according to the second beam monitoring pattern for a second iteration of the duration.

23. The method of claim 18, further comprising: determining, prior to expiration of the duration, that the one or more first transmission beams of the first beam monitoring mode fail to meet or exceed the one or more reliability metrics; as well as Based at least in part on the determination, switching back to receiving the control channel transmission according to the first beam monitoring mode.

24. The method of claim 18, further comprising: Determining that the one or more first transmission beams of the first beam monitoring mode exceed the one or more reliability metrics is based at least in part on: determining that a predetermined number of transmissions associated with the one or more first transmission beams are received during a given time period, determining that a signal quality associated with the one or more first transmission beams satisfies a signal quality threshold; or any combination thereof.

25. The method of claim 18, further comprising: Determining that the one or more first transmission beams of the first beam monitoring mode exceed the one or more reliability metrics is based at least in part on: receiving an indication from a base station that the one or more first transmission beams exceed a reliability threshold; as well as Acknowledge receipt of the instruction.

26. An apparatus for wireless communication, comprising: processor; a memory in electronic communication with the processor; as well as Instructions, which are stored in the memory and, when executed by the processor, are operable to cause the apparatus to perform the following operations receiving a control channel transmission in one or more first transmission beams according to a first beam monitoring pattern from a set of beam monitoring patterns; receiving a control channel transmission according to a second beam monitoring pattern during a time duration based at least in part on a determination to override the first beam monitoring pattern with a second beam monitoring pattern from the set of beam monitoring patterns during the time duration; and After the duration, a control channel transmission is received according to the first beam monitoring mode.

27. The apparatus according to claim 26, wherein When the instructions are executed by the processor, the apparatus further causes the apparatus to perform the following operations: An indication is received that the second beam monitoring mode is to be utilized based at least in part on one or more first transmission beams associated with the first beam monitoring mode exceeding one or more reliability metrics.

28. The apparatus according to claim 27, wherein When the processor executes the instruction receiving the indication, the processor further causes the apparatus to perform the following operations: The indication is received in a Medium Access Control (MAC) Control Element (CE) or in Downlink Control Information (DCI).

29. The apparatus according to claim 27, wherein The duration is preconfigured or indicated in the indication.

30. The apparatus of claim 27, wherein: The duration is a number of time slots.

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