Technique for sequencing directional signals during discontinuous reception

Abstract

Techniques for reordering beams used to send reference signals for subsequent beam scanning of a beam management process are described herein. Beams used to send reference signals may be hierarchically ordered to enable a user equipment (UE) to terminate the beam management process as early as possible, thereby saving power when operating in a discontinuous reception mode. A base station may use a first ordered beam set as part of a first beam scan to send reference signals. The UE may send feedback information about signal quality of at least some of the reference signals to the base station. The base station may generate a second ordered beam set based on the feedback information. The base station may use the second ordered beam set as part of a second beam scan to send reference signals.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 693,214, filed on July 2, 2018, by Islam et al., and entitled “Techniques to Order Direction Signals During Discontinuous Reception,” and U.S. Patent Application No. 16 / 382,992, filed on April 12, 2019, by Islam et al., and entitled “Techniques to Order Direction Signals During Discontinuous Reception,” each of which is assigned to the assignee herein. Technical Field

[0003] The following relates generally to wireless communications, and more particularly to techniques for sequencing directional signals during discontinuous reception. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems, such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems that may be referred to as new radio (NR) systems. These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include multiple base stations or network access nodes, each of which simultaneously supports communication of multiple communication devices, which may be referred to as user equipment (UE).

[0005] In some wireless communication systems, a UE may enter a discontinuous reception (DRX) mode to save power. A beam management process may be performed when the UE operates in the DRX mode to maintain a communication link. Summary of the invention

[0006] The described technology relates to improved methods, systems, devices and apparatuses for supporting techniques for sorting directional signals during discontinuous reception. In general, the described technology provides for reordering beams used to send reference signals for subsequent beam scanning of a beam management process. The beams used to send reference signals can be hierarchically sorted so that a user equipment (UE) can terminate the beam management process as early as possible, thereby saving power when operating in a discontinuous reception mode. The base station can use a first ordered beam set as part of a first beam scan to send reference signals. The UE can send feedback information about the signal quality of at least some reference signals to the base station. The base station can generate a second ordered beam set based on the feedback information. The base station can use the second ordered beam set as part of a second beam scan to send reference signals. If the UE determines that the reference signal meets a threshold, the UE can terminate the beam management process as early as possible.

[0007] A wireless communication method is described. The method may include: transmitting a reference signal set using a first ordered beam set; receiving feedback information from a UE operating in a discontinuous reception (DRX) mode, the feedback information being based on the reference signal set; generating a second ordered beam set for the reference signal set that is different from the first ordered beam set, the second ordered beam set being based on receiving the feedback information from the UE; and transmitting the reference signal set using the second ordered beam set.

[0008] An 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 executed by the processor to cause the apparatus to: transmit a reference signal set using a first ordered beam set; receive feedback information from a UE operating in a DRX mode, the feedback information being based on the reference signal set; generate a second ordered beam set for the reference signal set that is different from the first ordered beam set, the second ordered beam set being based on receiving the feedback information from the UE; and transmit the reference signal set using the second ordered beam set.

[0009] Another apparatus for wireless communication is described. The apparatus may include means for transmitting a reference signal set using a first ordered beam set, receiving feedback information from a UE operating in a DRX mode, the feedback information being based on the reference signal set, generating a second ordered beam set for the reference signal set that is different from the first ordered beam set, the second ordered beam set being based on receiving the feedback information from the UE, and transmitting the reference signal set using the second ordered beam set.

[0010] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: transmit a reference signal set using a first ordered beam set; receive feedback information from a UE operating in a DRX mode, the feedback information based on the reference signal set; generate a second ordered beam set for the reference signal set that is different from the first ordered beam set, the second ordered beam set based on receiving the feedback information from the UE; and transmit the reference signal set using the second ordered beam set.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying a first beam in the first ordered set of beams to be used to transmit a wake-up signal to the UE based on the feedback information.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: reordering the first ordered set of beams to prioritize the first beam based on identifying the first beam, wherein generating the second ordered set of beams can be based on reordering the first ordered set of beams.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: identifying a second beam in the first ordered beam set to be used to transmit the wake-up signal based on the feedback information; and reordering the first ordered beam set to prioritize the first beam and the second beam based on identifying the first beam, wherein generating the second ordered beam set can be based on reordering the first ordered beam set.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first beam may precede the second beam in the second ordered set of beams.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first beam may be adjacent to the second beam in the second ordered set of beams.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: during an on period of the DRX mode of the UE, sending the wake-up signal using the first beam and the second beam.

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: ranking the beams in the first ordered set of beams based on the feedback information based on a signal quality of each signal associated with the beam, wherein generating the second ordered set of beams can be based on ranking the beams.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: recognizing that the feedback information fails to indicate a preference between at least some of the beams included in the feedback information, and ordering the beams used in the second ordered beam set based on which beams can be adjacent to each other.

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying an indication of signal quality based on receiving the feedback information, wherein generating the second ordered beam set may be based on identifying the indication of signal quality.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the feedback information includes received signal received power (RSRP), received signal received quality (RSRQ), signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SNIR), or a combination thereof.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: identifying a beam index of a beam selected by the UE in the first ordered beam set to be used for transmitting a wake-up signal based on the feedback information, wherein generating the second ordered beam set may be based on identifying the beam index selected by the UE.

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: identifying a departure angle of the beam in the first ordered set of beams based on the feedback information, wherein generating the second ordered set of beams may be based on identifying the departure angle of the beam.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the feedback information includes information about the departure angle, information about a receive array of the UE for receiving a signal sent using a beam in the first ordered beam set, or a combination thereof.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the reference signal set includes a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), or a physical broadcast channel (PBCH) signal, or a combination thereof.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: based on the feedback information indicating that the UE is to change the receiving array to receive two adjacent signals in the reference signal set, identifying the gap time between the transmission of the reference signal set, wherein transmitting the reference signal set using the second ordered beam set can be based on identifying the gap time.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the set of reference signals may be received during an OFF period of the DRX mode of the UE.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the UE may be in a connected discontinuous reception (C-DRX) mode.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the feedback information may be received during an on period of a DRX cycle or during an off period of the DRX cycle.

[0029] A wireless communication method is described. The method may include: receiving, by a UE operating in a DRX mode, a reference signal set in a first ordered beam set; identifying a signal quality of a subset of reference signals received by the UE; sending feedback information to the base station based on identifying the signal quality of the subset of reference signals; and receiving the reference signal set in a second ordered beam set different from the first ordered beam set, the second ordered beam set being based on sending the feedback information.

[0030] An 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 executed by the processor to cause the apparatus to: receive a reference signal set in a first ordered beam set by a UE operating in a DRX mode; identify a signal quality of a subset of reference signals received by the UE; send feedback information to the base station based on identifying the signal quality of the subset of reference signals; and receive the reference signal set in a second ordered beam set different from the first ordered beam set, the second ordered beam set being based on sending the feedback information.

[0031] Another apparatus for wireless communication is described. The apparatus may include means for receiving, by a UE operating in a DRX mode, a set of reference signals in a first ordered beam set; identifying a signal quality of a subset of reference signals received by the UE; sending feedback information to the base station based on identifying the signal quality of the subset of reference signals; and receiving the set of reference signals in a second ordered beam set different from the first ordered beam set, the second ordered beam set being based on sending the feedback information.

[0032] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: receive, by a UE operating in a DRX mode, a set of reference signals in a first ordered beam set; identify a signal quality of a subset of reference signals received by the UE; send feedback information to the base station based on identifying the signal quality of the subset of reference signals; and receive the set of reference signals in a second ordered beam set different from the first ordered beam set, the second ordered beam set being based on sending the feedback information.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: identifying a first beam to be used to transmit a wake-up signal using the UE based on identifying the signal quality of the reference signal subset, wherein receiving the reference signal set in the second ordered beam set can be based on identifying the first beam.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: identifying a second beam to be used for transmitting the wake-up signal based on identifying the signal quality of the reference signal subset, wherein receiving the reference signal set in the second ordered beam set can be based on identifying the second beam.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first beam may precede the second beam in the second ordered set of beams.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first beam may be adjacent to the second beam in the second ordered set of beams.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: during an on period of the DRX mode of the UE, receiving the wake-up signal using the first beam or the second beam based on sending the feedback information.

[0038] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for ranking the beams in the first ordered beam set based on identifying the signal quality of the reference signal subset, wherein the feedback information may be based on ranking the beams.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, identifying the signal quality of each signal may also include operations, features, components, or instructions for identifying RSRP, RSRQ, SNR, SNIR, or a combination thereof for the reference signal subset.

[0040] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: selecting a beam index of a beam in the first ordered beam set to be used to transmit a wake-up signal, wherein the feedback information may be based on selecting the beam index.

[0041] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: identifying a departure angle of the reference signal subset or a receive array for receiving the reference signal subset, wherein the feedback information includes information related to the departure angle or the receive array for receiving the reference signal subset, wherein receiving the reference signal set in the second ordered beam set can be based on identifying the departure angle or the receive array for receiving the reference signal subset.

[0042] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the reference signal set includes a CSI-RS, a DMRS, a PSS, a SSS, or a combination thereof.

[0043] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for configuring a receive array during an interstitial time between transmissions of the reference signal set, wherein receiving the reference signal set in the second ordered beam set may be based on configuring the receive array during the interstitial time.

[0044] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the set of reference signals may be transmitted during an OFF period of the DRX mode of the UE.

[0045] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the UE may be in a connected discontinuous reception (C-DRX) mode.

[0046] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the UE sends the feedback information during an on period of a DRX cycle or during an off period of the DRX cycle.

[0047] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a number of reference signals in the reference signal subset is less than a number of reference signals in the reference signal set. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 An example of a wireless communication system supporting techniques for sequencing directional signals during discontinuous reception according to aspects of the present disclosure is shown.

[0049] Figure 2 An example of a wireless communication system supporting techniques for sequencing directional signals during discontinuous reception according to aspects of the present disclosure is shown.

[0050] Figure 3 An example of a discontinuous reception (DRX) cycle supporting techniques for ordering directional signals during discontinuous reception according to aspects of the present disclosure is shown.

[0051] Figure 4 An example of a DRX process supporting techniques for ordering directional signals during discontinuous reception according to aspects of the present disclosure is shown.

[0052] Figure 5 An example of a beam management process that supports techniques for ordering directional signals during discontinuous reception is shown in accordance with aspects of the present disclosure.

[0053] Figure 6 and 7 A block diagram of a device supporting techniques for ordering directional signals during discontinuous reception in accordance with aspects of the present disclosure is shown.

[0054] Figure 8 A block diagram of a communication manager supporting techniques for ordering directional signals during discontinuous reception is shown in accordance with aspects of the present disclosure.

[0055] Fig. 9 A diagram of a system including devices supporting techniques for ordering directional signals during discontinuous reception is shown in accordance with aspects of the present disclosure.

[0056] Fig.10 and 11 A block diagram of a device supporting techniques for ordering directional signals during discontinuous reception in accordance with aspects of the present disclosure is shown.

[0057] Fig.12 A block diagram of a communication manager supporting techniques for ordering directional signals during discontinuous reception is shown in accordance with aspects of the present disclosure.

[0058] Fig.13 A diagram of a system including devices supporting techniques for ordering directional signals during discontinuous reception is shown in accordance with aspects of the present disclosure.

[0059] Figures 14 to 17 A flow chart illustrating a method of supporting techniques for ordering directional signals during discontinuous reception in accordance with aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0060] In some wireless communication systems, a user equipment (UE) may enter a discontinuous reception (DRX) mode to save power. In a wireless communication system that uses directional beams to establish a communication link, when the UE is operating in the DRX mode, the UE may perform a beam management procedure. Such a beam management procedure may consume power and may reduce the benefits of the UE operating in the DRX mode.

[0061] Techniques for reordering beams used to send reference signals for subsequent beam scanning of a beam management process are described herein. Beams used to send reference signals may be hierarchically ordered to enable a UE to terminate the beam management process early, thereby saving power. A base station may use a first ordered set of beams to send reference signals as part of a first beam scan. The UE may send feedback information about signal quality of at least some of the reference signals to the base station. The base station may generate a second ordered set of beams based on the feedback information. The base station may use the second ordered set of beams to send reference signals as part of a second beam scan. If the UE determines that the reference signal meets a threshold, the UE may terminate the beam management process early.

[0062] Aspects of the present disclosure are first described in the context of wireless communication systems. Aspects of the present disclosure are described in the context of wireless communication systems and programs. Aspects of the present disclosure are further illustrated and described with reference to device diagrams, system diagrams, and flow charts related to techniques for sorting directional signals during discontinuous reception.

[0063] Figure 1 An example of a wireless communication system 100 according to various aspects of the present disclosure is shown, the wireless communication system supporting a technique for ordering directional signals during discontinuous reception. 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 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, or a new radio (NR) network. In some cases, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, or communications with low-cost and low-complexity devices.

[0064] The base station 105 may communicate wirelessly with the UE 115 via one or more base station antennas. The base station 105 described herein may include or may be referred to by those skilled in the art as a transceiver base station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga-nodeB (any of which may be referred to as a gNB), a home NodeB, a home eNodeB, or some other suitable term. The wireless communication system 100 may include different types of base stations 105 (e.g., macro cell base stations or small cell base stations). The UE 115 described herein may be able to communicate with various types of base stations 105 and network devices, including macro eNBs, small cell eNBs, gNBs, and relay base stations, among others.

[0065] Each base station 105 may be associated with a particular geographic coverage area 110 in which communications with various UEs 115 are supported. Each base station 105 may provide communications coverage for a respective geographic coverage area 110 via a communications link 125, and the communications link 125 between the base station 105 and the UE 115 may utilize one or more carriers. The communications link 125 shown in the wireless communication system 100 may 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. Downlink transmissions may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions.

[0066] The geographic coverage area 110 of the base station 105 can be divided into sectors that constitute only a portion of the geographic coverage area 110, and each sector can be associated with a cell. For example, each base station 105 can provide communication coverage for a macro cell, a small cell, a hotspot, or other type of cell, or various combinations thereof. In some examples, the base station 105 can be mobile and thus provide communication coverage for a mobile geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, and overlapping geographic coverage areas 110 associated with different technologies can be supported by the same base station 105 or different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous LTE / LTE-A / LTE-A Pro or NR network, in which different types of base stations 105 provide coverage for various geographic coverage areas 110.

[0067] The term "cell" refers to a logical communication entity used for communication with a base station 105 (e.g., via a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID)) used to distinguish adjacent cells operating via the same or different carriers. In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types that may provide access to different types of devices (e.g., machine type communication (MTC), narrowband Internet of Things (NB-IoT), enhanced mobile broadband (eMBB), or other protocol types). In some cases, the term "cell" may refer to a portion (e.g., a sector) of a geographic coverage area 110 on which the logical entity operates.

[0068] UE 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 device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, where "device" may also be referred to as a unit, a station, a terminal, or a client. UE 115 may also be a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may also refer to a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or an MTC device, etc., and the UE may be implemented in various articles such as electrical appliances, vehicles, meters, etc.

[0069] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay the information to a central server or application, which may utilize the information or present the information to humans interacting with the program or application. Some UEs 115 may be designed to collect information or implement automated behavior of machines. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing.

[0070] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode supporting unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a power-saving "deep sleep" mode when not engaged in active communication, or operating over a limited bandwidth (e.g., in accordance with narrowband communication). In some cases, UE 115 may be designed to support critical functions (e.g., mission-critical functions), and the wireless communication system 100 may be configured to provide ultra-reliable communication for these functions.

[0071] In some cases, UE 115 may also be able to communicate directly with other UE 115 (e.g., using peer-to-peer (P2P) or device-to-device (D2D) protocols). One or more of a group of UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in the group may be outside the geographic coverage area 110 of the base station 105 or may not be able to receive transmissions from the base station 105. In some cases, multiple groups of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some cases, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of the base station 105.

[0072] The base stations 105 may communicate with the core network 130 and with each other. For example, the base stations 105 may interface with the core network 130 via a backhaul link 132 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130) via a backhaul link 134 (e.g., via X2, Xn, or other interfaces).

[0073] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one packet data network (PDN) gateway (P-GW). The MME may manage non-access stratum (e.g., control plane) functions such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the EPC. User IP packets may be transmitted via the S-GW, which itself may be connected to the P-GW. The P-GW may provide IP address allocation and other functions. The P-GW may be connected to a network operator IP service. Operator IP services may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or a packet switched (PS) streaming service.

[0074] At least some network devices, such as base stations 105, may include subcomponents, such as access network entities, which may be examples of access node controllers (ANCs). Each access network entity may communicate with UE 115 through multiple other access network transmission entities, which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). In some configurations, the various functions of each access network entity or base station 105 may be distributed across various network devices (e.g., radio heads and access network controllers), or combined into a single network device (e.g., base station 105).

[0075] The wireless communication system 100 can operate using one or more frequency bands typically in the range of 300 MHz to 300 GHz. Typically, because the length of the wavelength ranges from about one decimeter to one meter, the region of 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band. Buildings and environmental features may block or redirect UHF waves. However, the waves can penetrate the structure sufficiently so that the macrocell provides service to the UE 115 located indoors. Compared to the transmission of smaller frequencies and longer waves using the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz, the transmission of UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0076] The wireless communication system 100 may also operate in the Super High Frequency (SHF) region using a frequency band from 3 GHz to 30 GHz, also known as a centimeter band. The SHF region includes bands such as the 5 GHz Industrial, Scientific, and Medical (ISM) band, which may be used opportunistically by devices that may tolerate interference from other users.

[0077] The wireless communication system 100 may also operate in the extremely high frequency (EHF) region of the spectrum also referred to as millimeter band (e.g., from 30 GHz to 300 GHz). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices may be smaller and more closely spaced than the UHF antennas. In some cases, this may facilitate the use of antenna arrays within the UE 115. However, the propagation of EHF transmissions may be affected by greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The technology disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of bands across these frequency regions may vary from country to country or regulatory agency.

[0078] In some cases, the wireless communication system 100 can utilize both licensed radio spectrum bands and unlicensed radio spectrum bands. For example, the wireless communication system 100 can adopt license assisted access (LAA), unlicensed LTE (LTE-U) radio access technology or NR technology in unlicensed bands such as 5GHz ISM bands. When operating in unlicensed radio frequency spectrum bands, wireless devices such as base stations 105 and UE 115 can adopt a listen-before-talk (LBT) process to ensure that the channel is cleared before sending data. In some cases, operations in unlicensed bands can be based on a combination of CA configurations and CCs operating in licensed bands (e.g., LAA). Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination of these. Duplexing in unlicensed spectrum can be based on frequency division duplexing (FDD), time division duplexing (TDD), or a combination of both.

[0079] In some examples, the base station 105 or the UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. For example, the wireless communication system 100 may use a transmission scheme between a transmitting device (e.g., a base station 105) and a receiving device (e.g., a UE 115), wherein the transmitting device is equipped with multiple antennas and the receiving device is equipped with one or more antennas. MIMO communication may employ multipath signal propagation to improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers, which may be referred to as spatial multiplexing. Multiple signals may be transmitted, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams. Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) that transmits multiple spatial layers to the same receiving device and multi-user MIMO (MU-MIMO) that transmits multiple spatial layers to multiple devices.

[0080] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used in a transmitting device or a receiving device (e.g., a base station 105 or a UE 115) to shape or steer an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that signals propagating in a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements can include the transmitting device or the receiving device applying certain amplitude and phase offsets to signals carried via each of the antenna elements associated with the device. The adjustments associated with each of the antenna elements can be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0081] In one example, the base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with the UE 115. For example, some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the base station 105 in different directions, which may include signals sent according to different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used to identify (e.g., by the base station 105 or a receiving device such as the UE 115) the beam direction for subsequent transmission and / or reception by the base station 105. The base station 105 may send some signals, such as data signals associated with a specific receiving device, in a single beam direction (e.g., a direction associated with a receiving device such as the UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based at least in part on signals sent in different beam directions. For example, UE 115 may receive one or more of the signals sent by base station 105 in different directions, and UE 115 may report indications of the signals it received at the highest signal quality or another acceptable signal quality to base station 105. Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to send signals in a single direction (e.g., to send data to a receiving device).

[0082] A receiving device (e.g., a UE 115, which may be an example of a mmW receiving device) may try multiple receive beams when receiving various signals such as synchronization signals, reference signals, beam selection signals, or other control signals from a base station 105. For example, a receiving device may try multiple receive directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receive beamforming weighting groups applied to signals received in multiple antenna elements of an antenna array, or processing received signals according to different receive beamforming weighting groups applied to signals received in multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different receive beams or receive directions. In some examples, a receiving device may use a single receive beam to receive along a single beam direction (e.g., when receiving a data signal). A single receive beam may be aligned in a beam direction determined at least in part based on listening according to different receive beam directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio, or at least in part based on otherwise acceptable signal quality based on listening according to multiple beam directions).

[0083] In some cases, the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays that support MIMO operations, or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in 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 in different geographic locations. A base station 105 may have an antenna array with rows and columns of multiple antenna ports that the base station 105 may use to support beamforming for communications with a UE 115. Likewise, a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.

[0084] 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 on the bearer or packet data convergence protocol (PDCP) layer can be based on IP. In some cases, the radio link control (RLC) layer can perform packet segmentation and reorganization to communicate through logical channels. The media access control (MAC) layer can perform priority processing and multiplex logical channels into transport channels. The MAC layer can also use hybrid automatic repeat request (HARQ) to provide retransmission in the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection between the UE 115 and the base station 105 or the core network 130 that supports the radio bearer for user plane data. In the physical (PHY) layer, the transport channel can be mapped to the physical channel.

[0085] In some cases, UE 115 and base station 105 can support retransmission of data to increase the possibility of data being successfully received. HARQ feedback is a technique that increases the possibility of correctly receiving data through communication link 125. HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). Under poor radio conditions (e.g., signal-to-noise ratio conditions), HARQ may improve the throughput in the MAC layer. In some cases, a wireless device can support HARQ feedback for the same time slot, wherein the device can provide HARQ feedback for data received in a previous symbol in the time slot in a specific time slot. In other cases, the device can provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0086] The time interval in LTE or NR can be expressed as a multiple of a basic time unit, which can be, for example, a sampling period of T = 1 / 30,720,000 seconds. The time interval of the communication resources can be organized according to radio frames each having a duration of 10 milliseconds (ms), where the frame period can be expressed as T f =307,200T s . A radio frame can be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame can include 10 subframes numbered from 0 to 9, and each subframe can have a duration of 1 millisecond. The subframe can be further divided into 2 time slots, each time slot has a duration of 0.5 ms, and each time slot can contain 6 or 7 modulation symbol periods (e.g., depending on the length of the cyclic prefix before each symbol period). In addition to the cyclic prefix, each symbol period can contain 2048 sampling periods. In some cases, a subframe can be the minimum scheduling unit of the wireless communication system 100 and can be referred to as a transmission time interval (TTI). In other cases, the minimum scheduling unit of the wireless communication system 100 can be shorter than a subframe or can be dynamically selected (e.g., in a burst of a shortened TTI (sTTI) or in a selected component carrier using sTTI).

[0087] In some wireless communication systems, a time slot may be further divided into a plurality of mini-slots containing one or more symbols. In some instances, a symbol of a mini-slot or a mini-slot may be a minimum scheduling unit. For example, the duration of each symbol may vary depending on the subcarrier spacing or the operating frequency band. In addition, some wireless communication systems may implement time slot aggregation, in which a plurality of time slots or mini-slots are aggregated together and used for communication between UE 115 and base station 105.

[0088] The term "carrier" refers to a collection of radio spectrum resources having a defined physical layer structure for supporting communications over the communication link 125. For example, a carrier of the communication link 125 may include a portion of a radio frequency spectrum band that operates according to a physical layer channel for a given radio access technology. Each physical layer channel may carry user data, control information, or other signaling. A carrier may be associated with a predefined frequency channel (e.g., an Evolved Universal Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel raster for discovery by UE115. A carrier may be a downlink or uplink (e.g., in FDD mode), or may be configured to carry downlink and uplink communications (e.g., in TDD mode). In some examples, a signal waveform transmitted over a carrier may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or DFT-s-OFDM).

[0089] The organization structure of the carrier may be different for different radio access technologies (e.g., LTE, LTE-A, LTE-A Pro, NR, etc.). For example, communications through the carrier may be organized according to TTIs or time slots, each of which may include user data and control information or signaling to support decoding of the user data. The carrier may also include dedicated acquisition signaling (e.g., synchronization signals or system information, etc.) and control signaling to coordinate the operation of the carrier. In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers.

[0090] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier, for example, using a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. In some examples, control information sent in a physical control channel may be distributed in a cascaded manner between different control regions (e.g., between a common control region or common search space and one or more UE-specific control regions or UE-specific search spaces).

[0091] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of predetermined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). In some examples, each serviced UE 115 may be configured to operate on part or all of the carrier bandwidth. In other examples, some UEs 115 may be configured to operate using a narrowband protocol type associated with a predefined portion or range (e.g., a set of subcarriers or RBs) within a carrier (e.g., an "in-band" deployment of a narrowband protocol type).

[0092] In a system using MCM technology, a resource element may consist of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period is inversely proportional to the subcarrier spacing. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme). Therefore, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115. In a MIMO system, wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and space resources (e.g., space layers), and the use of multiple space layers may further increase the data rate of communication with UE 115.

[0093] A device (e.g., base station 105 or UE 115) of wireless communication system 100 may have a hardware configuration that supports communication on a specific carrier bandwidth, or may be configured to support communication on one of a set of carrier bandwidths. In some examples, wireless communication system 100 may include base station 105 and / or UE 115 that may support simultaneous communication via carriers associated with more than one different carrier bandwidths.

[0094] The wireless communication system 100 may support communication with the UE 115 on multiple cells or carriers, a feature that may be referred to as carrier aggregation (CA) or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink CCs and one or more uplink CCs. Carrier aggregation may be used with both FDD and TDD component carriers.

[0095] In some cases, the wireless communication system 100 can utilize an enhanced component carrier (eCC). An eCC can be characterized by one or more features including a wider carrier or frequency channel bandwidth, a shorter symbol duration, a shorter TTI duration, or a modified control channel configuration. In some cases, an eCC can be associated with a carrier aggregation configuration or a dual connectivity configuration (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). An eCC can also be configured for use in an unlicensed spectrum or a shared spectrum (e.g., where more than one operator is allowed to use the spectrum). An eCC characterized by a wide carrier bandwidth can include one or more segments that a UE 115 can utilize that are unable to monitor the entire carrier bandwidth or are otherwise configured to use a limited carrier bandwidth (e.g., to save power).

[0096] In some cases, an eCC may utilize a different symbol duration than other CCs, which may include using a shortened symbol duration compared to the symbol duration of other CCs. A shorter symbol duration may be associated with an increased spacing between adjacent subcarriers. A device utilizing an eCC (such as a UE 115 or a base station 105) may transmit a wideband signal with a shortened symbol duration (e.g., 16.67 microseconds) (e.g., based on a frequency channel or carrier bandwidth of 20, 40, 60, 80 MHz, etc.). A TTI in an eCC may consist of one or more symbol periods. In some cases, the TTI duration (i.e., the number of symbol periods in a TTI) may be variable.

[0097] Wireless communication systems such as NR systems can utilize any combination of licensed, shared, and unlicensed spectrum bands. The flexibility of eCC symbol duration and subcarrier spacing can allow the use of eCC across multiple spectrums. In some examples, NR shared spectrum can improve spectrum utilization and spectrum efficiency, especially through dynamic vertical sharing (e.g., across frequency domain) and horizontal sharing (e.g., across time domain) of resources.

[0098] In some cases, the base station 105 may reorder beams used to send reference signals for subsequent beam scanning of a beam management process. The beams used to send reference signals may be hierarchically ordered to enable the UE 115 to terminate the beam management process as early as possible, thereby saving power when operating in a discontinuous reception mode. The base station 105 may use a first ordered set of beams as part of a first beam scan to send reference signals. The UE 115 may send feedback information about the signal quality of at least some of the reference signals to the base station 105. The base station 105 may generate a second ordered set of beams based on the feedback information. The base station 105 may use the second ordered set of beams as part of a second beam scan to send reference signals. If the UE 115 determines that the reference signal meets a threshold, the UE 115 may terminate the beam management process as early as possible.

[0099] Figure 2 An example of a wireless communication system 200 that supports techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. The wireless communication system 200 can include one or more base stations 205 and one or more UEs 210. The base station 205 can be a reference Figure 1 UE 210 may be an example of a base station 105 described above. Figure 1 An example of UE 115 is described.

[0100] In the wireless communication system 200, the UE 210 may be configured to enter the DRX mode to save power. Many UE 210 may be battery-powered devices, which may want to save power when not actively used. One method of saving power is to enter the DRX mode. In some cases, the UE 210 may enter C-DRX. For the DRX mode, during the off cycle, the UE 210 may not be allowed to send various signals. This condition may allow the UE 210 to save power by not operating its transmission chain and / or reception chain, and may allow the base station 205 to assign these resources to other UEs to improve resource utilization efficiency.

[0101] In some cases, the wireless communication system 200 may communicate with the UE 210 using one or more directional beams. In order to maintain the communication link established using the directional beam, the base station 205 and / or the UE 210 may perform one or more beam management processes. These beam management processes may be performed periodically to maintain the communication link. Compared with wider beams or omnidirectional beams, directional beams provide services for more limited geographic areas. Thus, as the UE 210 moves through the network, the communication link using the directional beam is more prone to failure or fading.

[0102] The beam management process may include the transmission of beam management signals 215 in both the uplink and downlink. For example, the base station 205 may transmit a reference signal set using multiple different beams (e.g., multiple different directions). Examples of reference signals may include a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), or a physical broadcast channel (PBCH) signal, or a combination thereof. The UE 210 may listen to these reference signals, may measure the channel conditions of these reference signals, and may select one or more beams (e.g., a beam with the best channel conditions) for future communications. The UE 210 may report the channel condition information or the selected beam to the base station 205. As part of the beam management process, a similar procedure may be performed for uplink communications. Using this information, the base station 205 may adjust the beam used for the communication link with the UE 210. In this way, the base station 205 and the UE 210 may use the beam management process to maintain the communication link even if the UE 210 is moving through the coverage area.

[0103] When UE 210 operates in DRX mode, the beam management process for maintaining a communication link may consume more power than desired by UE 210. Because directional beams are sensitive to the movement of UE 210, in more omnidirectional networks, the beam management process may be performed more frequently than other link management procedures.

[0104] In addition, the base station 205 can configure the wake-up signal 220 to be transmitted using certain directional beams. Even in the DRX mode, the base station 205 and the UE 210 can maintain active beams to ensure that the wake-up signal 220 can be detected by the UE 210. The wake-up signal 220 can be sent to the UE 210 operating in the DRX mode during the on period of the DRX mode. The wake-up signal 220 can indicate to the UE 210 that the base station 205 has information waiting to be sent to the UE 210. Upon receiving the wake-up signal 220, the UE 210 can enter the working mode and activate its transmit / receive chain to receive information from the base station 205.

[0105] Techniques for performing beam management procedures when the UE 210 is in DRX mode are described herein. In some beam management procedures that occur during the DRX mode, the base station 205 can reorder the beams used to send reference signals based on feedback from the UE 210. In this reordering, beams with better channel conditions can be sent earlier in the beam scan of the beam management procedure. The UE 210 can listen to the beam scan and can enter a sleep mode or a micro sleep mode based on a selected beam that provides sufficient signal quality.

[0106] Figure 3 An example of a DRX cycle 300 is shown that supports techniques for sequencing directional signals during discontinuous reception in accordance with various aspects of the present disclosure. In some examples, the DRX cycle 300 can implement aspects of the wireless communication system 100 or 200.

[0107] The DRX cycle 300 shows how beam scanning 305 of a reference signal (e.g., a beam management process) and a wake-up signal 310 may be transmitted during the DRX cycle 300. The DRX cycle 300 may include an off period 315 and an on period 320. The DRX cycle 300 may represent one off period 315 and one on period 320. During the on period 320, the UE 210 may monitor a physical downlink control channel (PDCCH) (e.g., for the wake-up signal 310). During the off period 315, the UE 210 may enter a sleep state and not monitor certain channels. During the off period 315, the UE 210 may save energy by deactivating certain components for receiving and / or transmitting.

[0108] In some cases, to maintain a communication link using directional beams, the base station 205 and the UE 210 may perform a beam management procedure during an off period 315 of the DRX cycle 300. At least a portion of the beam management procedure may include the base station 205 sending a reference signal 325 in the beam scan 305. The reference signal 325 may be sent using a plurality of different beams or in a plurality of different directions. For example, a first reference signal 325-a may be sent in a first direction, a second reference signal 325-b may be sent in a second direction, a third reference signal 325-c may be sent in a third direction, a fourth reference signal 325-d may be sent in a fourth direction, a fifth reference signal 325-e may be sent in a fifth direction, and so on.

[0109] UE 210 may provide feedback information to base station 205 indicating one or more beams associated with reference signal 325 that may be used for a wake-up signal. For example, UE 210 may indicate that a beam associated with reference signal 325-c may be used for wake-up signal 330-a, and a beam associated with reference signal 325-e may be used for wake-up signal 330-b. Figure 4 Additional details are described regarding some of these operations.

[0110] In order to reduce the amount of power consumed by the UE 210 operating in DRX mode when performing the beam management process, the base station 205 can sort the beams used during the beam scanning 305. In some cases, the base station 205 can locate the beam preferred by the UE 210 early in the beam scanning. In this case, upon detecting that the channel conditions of at least one beam meet the threshold for maintaining the communication link, the UE 210 can immediately re-enter the sleep mode.

[0111] Figure 4 An example of a DRX process 400 that supports techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. In some examples, the DRX process 400 can implement aspects of the wireless communication system 100 or 200. The DRX process 400 includes operations performed by a base station 405 and a UE 410 and communications exchanged between the base station and the UE. The base station 405 can be a reference Figures 1 to 3 Examples of base stations 105 and 205 are described. The UE may be a reference Figures 1 to 3 Examples of UEs 115 and 210 are described.

[0112] The DRX process 400 may include a beam scanning process 415, a beam recovery reception process 420, and a wake-up process 425. In some cases, the beam scanning process 415 and the beam recovery reception process 420 may be at least part of a beam management process.

[0113] During the beam scanning process 415, the base station 405 may transmit a reference signal using the plurality of beams 430. For example, each beam may be used to transmit a reference signal. Each beam in the plurality of beams 430 may represent a unique beam configuration used during the beam scanning process 415. In some cases, each beam may point in a different direction. The beam scanning process 415 may be performed during an off period of a DRX cycle. Examples of reference signals may include CSI-RS, DMRS, PSS, SSS, or a combination thereof.

[0114] UE 410 may listen to a reference signal that uses a beam that has been designated for use by base station 405 and UE 410. For example, if the communication link between base station 405 and UE 410 uses the third beam of multiple beams 430. UE 410 may measure the signal quality of the beam. If the pre-configured beam meets the signal quality threshold, UE 410 may stop listening to other reference signals and may enter sleep mode. In this case, UE 410 may not send any feedback information to base station 405. Base station 405 may interpret silence from UE 410 as indicating that the communication link is sufficient as currently configured.

[0115] If the preconfigured beam cannot meet the signal quality threshold, the UE 410 may listen to the reference signal during the beam scanning process 415. The UE 410 may measure the signal quality of each of the reference signals received from the base station 405. Examples of signal quality that may be measured by the UE 410 may include received signal received power (RSRP), received signal received quality (RSRQ), signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SNIR), or a combination thereof.

[0116] In some cases, UE 410 may select one or more beams for future communications (e.g., wake-up signals). In this case, UE 410 may select a beam or beam index to be used to transmit the wake-up signal from beams 430. In some cases, UE 410 may identify a first beam to transmit the wake-up signal during an on period of a DRX cycle.

[0117] UE 410 may send feedback information about signal conditions measured for a reference signal to base station 405. In some cases, the feedback information may include RSRP, RSPQ, SNR, SNIR, or other measured quantities. In these cases, base station 405 may select a beam for a wake-up signal. In some cases, the feedback information may include a beam index of a beam selected by UE 410 for a wake-up signal that satisfies a corresponding threshold. In some cases, the feedback information may indicate a main beam preference and at least one or more auxiliary beam preferences. In this case, base station 405 may place the main beam preference at the highest priority and place one or more auxiliary beam preferences at a lower priority.

[0118] In some cases, the UE 410 may report feedback information using a beam recovery receive process 420. During the beam recovery receive process 420, the base station 405 may configure its receive chain with multiple receive configurations 435. The base station 405 may sweep through the receive configurations 435. In some cases, there is a one-to-one mapping between the beam 430 used during the beam scanning process 415 and the receive configurations 435 used during the beam recovery receive process 420.

[0119] The UE 410 may transmit one or more beam restoration signals 440 for each beam selected by the UE 410 for future communications (e.g., a beam selected for use with a wake-up signal). The UE 410 may transmit the beam restoration signal 440 to be consistent with the receive configuration 435 associated with the selected beam. For example, the UE 410 may transmit the beam restoration signal 440 during the second receive configuration and the fifth receive configuration. This indicates that the UE 410 will prefer to communicate during the use of the second beam and the fifth beam from the plurality of beams 430.

[0120] During the wake-up procedure 425, the base station 405 may transmit a wake-up signal using one or more selected beams 445. The wake-up procedure may be performed during an on period of a DRX cycle of the UE 410. If the UE 410 determines that the base station 405 includes information waiting to be sent to the UE 410, the UE 410 may enter an active mode and receive the information from the base station 405.

[0121] In some cases, the beam scanning process 415 and the beam restoration reception process 420 may be performed during the OFF period of the DRX cycle. In other cases, the base station 405 and / or the UE 410 may be configured to periodically perform the beam scanning process 415 and / or the beam restoration reception process 420 during the ON period of the DRX cycle. In this case, the UE 410 may be able to save some power by performing the beam management process during the ON period instead of during the OFF period.

[0122] Figure 5 An example of a beam management process 500 is shown that supports techniques for sorting directional signals during discontinuous reception in accordance with aspects of the present disclosure. In some examples, the beam management process 500 can implement aspects of the wireless communication system 100 or 200. The beam management process 500 includes operations performed by a base station 505 and a UE 510 and communications exchanged between the base station and the UE. The base station 505 can be a reference Figures 1 to 4 Examples of base stations 105, 205 and 405 are described. The UE may be a reference Figures 1 to 4 Examples of UEs 115, 210, and 410 are described.

[0123] The beam management process 500 illustrates a technique for reordering beams used to transmit reference signals to reduce power consumption of a UE 510 operating in DRX mode. In some cases, the beam management process 500 may occur during an off period of a DRX cycle associated with a UE 510 operating in DRX mode.

[0124] During the first beam scanning process 515, the base station 505 may use the first ordered beam set 530 to send a reference signal. For example, each beam may be used to send a reference signal. Each beam in the first ordered beam set 530 may represent a unique transmit beam configuration used during the first beam scanning process 515. The first ordered set may include an order of beams used to send reference signals. For example, the first ordered beam set 530 may include a first beam 1 for sending a first reference signal, a second beam 2 for sending a second reference signal, a third beam 3 for sending a first reference signal, a fourth beam 4 for sending a first reference signal, and a fifth beam 5 for sending a first reference signal. In some cases, each beam may point to a different direction. Examples of reference signals may include CSI-RS, DMRS, PSS, SSS, or a combination thereof.

[0125] UE 510 can listen to reference signals that use beams that have been designated for use by base station 505 and UE 510. For example, if the communication link between base station 505 and UE 510 uses the third beam 3 in the first ordered beam set 530. UE 510 can measure the signal quality of the third beam 3. If the preconfigured beam (e.g., the third beam 3) meets the signal quality threshold, UE 510 can stop listening to other reference signals and can resume the dormant state. In fact, if the signal of the beam not used for the communication link degrades, UE 510 can terminate its listening to the reference signal, thereby saving power. In this case, UE 510 may not send any feedback information to base station 505. Base station 505 can interpret the silence from UE 510 as indicating that the communication link is as good as currently configured.

[0126] If the preconfigured beam (e.g., the third beam 3) cannot meet the signal quality threshold, the UE 510 may listen to other reference signals during the first beam scanning process 515. The UE 510 may measure the signal quality of at least some reference signals transmitted using the first ordered beam set 530 received from the base station 505. Examples of signal quality that may be measured by the UE 510 may include RSRP, RSRQ, SNR, SNIR, path loss, or a combination thereof.

[0127] In some cases, UE 510 may select one or more beams for future communications (e.g., wake-up signals). In this case, UE 510 may select a beam or beam index from beam 530 to be used to transmit the wake-up signal. In some cases, UE 510 may identify a first beam to transmit the wake-up signal during an on period of a DRX cycle. In some cases, if a preconfigured beam (e.g., third beam 3) does not meet a threshold, UE 510 may select a new beam to use. For example, UE 510 may select second beam 2 and / or fifth beam 5 for future communications.

[0128] In some cases, the UE 510 may rank the beams in the first ordered beam set 530 based on the signal quality of at least one beam subset. For example, the ranking may be ordered from the reference signal with the best RSRP to the reference signal with the worst RSRP. In this way, future beam scanning (e.g., the second beam scanning process 525) may be reordered in a hierarchical manner, allowing the UE 510 to terminate the beam management process early when it is determined that a certain reference signal transmitted using a certain beam meets a threshold.

[0129] The UE 510 may send feedback information 535 about the first ordered beam set 530 to the base station 505. The UE 510 may send the feedback information 535 in various ways. In some cases, the feedback information 535 may be transmitted in a measurement report, a channel state information (CSI) report, or other report message. In some cases, the feedback information 535 may be transmitted using a beam recovery reception process 520 and a beam recovery signal 545. In some cases, the feedback information 535 may include information about signal quality collected by the UE 510. For example, the feedback information 535 may include data about RSRP, RSPQ, SNR, SNIR, or other measurement quantities of one or more beams in the first ordered beam set 530. In these cases, the base station 505 may use the feedback information 535 to rank the first ordered beam set 530 and reorder the first ordered beam set to generate a second ordered beam set 555. The UE 510 may send the feedback information 535 during an on period or an off period of a DRX cycle.

[0130] In some cases, feedback information 535 may include a beam index of a beam selected by UE 510 from the first ordered beam set 530. For example, feedback information 535 may indicate a ranked list of beams from the first ordered beam set 530. UE 510 generates the ranked list based on the signal quality of the reference signal subset transmitted using the corresponding beam. In some examples, feedback information 535 may include a beam index of one or more beams selected by UE 510 for future communication (e.g., for wake-up signals). For example, UE 510 may select a main beam (e.g., beam 5) for future transmission and an auxiliary beam (e.g., beam 2) for future transmission.

[0131] In some cases, the UE 510 may measure the radio frequency (RF) panel used to receive the reference signal. The UE 510 may include information about which RF panel is used to receive which beams in the first ordered beam set 530. The base station 505 or the UE 510 may take this into account when generating the second ordered beam set 555. For example, switching RF panels during beam scanning may consume additional time or additional power, and the second ordered beam set 555 may be ordered to reduce or minimize the number of RF panel switches that the UE 510 may perform during beam scanning. In some cases, the UE 510 may transmit the RF panel that the UE 510 uses to receive the beam, the capabilities of the UE 510, or whether the UE 510 must switch RF panels when receiving the first ordered beam set 530. The UE 510 may use PUCCH, PUSCH, sub-6 GHz channels, buffer status reports, or other messages to transmit information about the RF panel. -

[0132] In some cases, the UE 510 may report feedback information 535 using a beam recovery receive process 520. During the beam recovery receive process 520, the base station 505 may configure its receive antennas or receive chains with a plurality of receive configurations 540. The base station 505 may sweep through the receive configurations 540. In some cases, there may be a one-to-one mapping between the first ordered beam set 530 used during the first beam scanning process 515 and the receive configurations 540 used during the beam recovery receive process 520.

[0133] The UE 510 may send one or more beam recovery signals 545 for each beam selected by the UE 510 for future transmission (e.g., a beam selected for use with a wake-up signal). In some cases, the beam recovery signal 545 may include any feedback information 535 described herein. The UE 510 may send the beam recovery signal 545 to be consistent with the reception configuration 540 associated with the selected beam. For example, the UE 510 may send the beam recovery signal 545 during the second reception configuration and the fifth reception configuration. The transmission of the beam recovery signal 545 may indicate that the UE 510 will prefer to communicate during the use of the second beam and the fifth beam from the plurality of beams 530. In some cases, the UE 510 may send the beam recovery signal 545 for each reception configuration 540. In this case, each beam recovery signal 545 may include feedback information for its associated beam.

[0134] At 550, the base station 505 may reorder the first ordered set or beams 530 based on the feedback information 535 to generate a second ordered set of beams 555. By reordering the beams, the base station 505 may establish a hierarchy of reference signal transmissions that allows the UE 510 operating in DRX mode to terminate the procedure early if certain conditions are met. For example, if the UE 510 determines that its pre-configured beam meets a threshold, the UE 510 may stop listening to and analyzing other beams in the beam scan.

[0135] In some cases, the base station 505 may receive feedback information 535 that includes data about the signal quality of beams received by the UE 510. In this case, the base station 505 may be used to identify beams for future transmissions, or may rank the beams in the first ordered beam set 530 according to their signal quality. For example, the base station 505 may identify a new order for the beams of the second ordered beam set 555 based on an analysis of the signal quality data. To this end, the base station 505 may compare the signal quality data to a threshold or other signal quality data, or both.

[0136] In some cases, the base station 505 may receive feedback information 535 that includes a reference or ranking of the beams. In this case, the base station 505 may identify a new order of the beams of the second ordered set of beams 555 based on the determination made by the UE 510. In this case, the feedback information 535 may include a beam index or a list of beam indices.

[0137] In some cases, the base station 505 may insert gaps between the ordered beams in the second ordered beam set 555. The UE 510 may use the gaps to decode a previous reference signal sent using a previous beam, check to see if the next reference signal needs to be decoded, reconfigure the RF panel (if necessary), or a combination thereof. To determine the gaps, the base station 505 may consider the departure angle of each beam in the first ordered beam set. The departure angle information may be used as a proxy to estimate whether the UE 510 may have to switch RF panels to receive adjacent beams. In some cases, the feedback information 535 includes information about the capabilities of the UE 510, whether the UE 510 must switch RF panels during the first beam scanning process 515, or what RF panel is used to receive each beam in the first ordered beam set, or a combination thereof. The base station 505 may use this information to determine the gaps. In some cases, the gaps may be configured to allow the UE 510 time to process the reference signal and terminate the beam scanning early when certain conditions are met. In some cases, the base station 505 may order the beams in the second ordered set of beams 555 in such a way that beams that the UE 510 may receive using the same subarray or RF panel are adjacent in the second ordered set of beams 555. In some cases, the gap may be a single symbol.

[0138] In some cases, the UE 510 may feed back to the base station 505 the indices of the three beams selected by the UE 510. However, in some cases, the feedback information 535 may not explicitly mention the order of preference of some beams. For example, the feedback information 535 may not specify whether the first beam is preferred over the second beam or vice versa. In this case, the base station 505 may sort the beams based on which beams are adjacent.

[0139] The base station 505 generates a second ordered beam set 555 based on the feedback information 535. The second ordered beam set 555 may include the same beam configuration as the first ordered beam set 530, except that the beams are used to send reference signals in different orders. For example, the second ordered beam set 555 may include a first beam 1 for sending a first reference signal, a fifth beam 5 for sending a second reference signal, a third beam 3 for sending the first reference signal, a second beam 2 for sending the first reference signal, and a fourth beam 4 for sending the first reference signal.

[0140] The base station 505 may indicate information about the second ordered beam set 555 to the UE 510. For example, the base station 505 may indicate the order of the beams in the second ordered beam set 555 to the UE 510 (e.g., 1, 5, 3, 2, 4). In some cases, the base station 505 may inform the UE 510 how some beams are related. For example, the base station 505 may indicate how close the beams are to the preferred beam (e.g., the anchor beam). In such an example, if the second ordered beam set 555 is not available, the UE 510 may focus its search on beams adjacent to the preferred beam or on beams after the anchor beam. In some cases, the base station 505 may indicate the proximity of the beams to the preferred beam.

[0141] During the second beam scanning process 525, the base station 505 may transmit a reference signal using the second ordered beam set 555. The base station 505 and the UE 510 may repeat the process discussed herein for the second ordered beam set 555. When the UE 510 operates in DRX mode, the base station 505 and / or the UE 510 may continue to reorder the beams any number of times. The second beam scanning process 525 may occur during an off period of a second DRX cycle that is different from the DRX cycle used to perform the first beam scanning process 515.

[0142] When listening to the reference signal sent using the second ordered beam set 555, the UE 510 may first monitor the main beam (e.g., the beam with the best signal quality). If the signal quality of the main beam of the second ordered beam set 555 does not meet the threshold, the UE 510 may monitor the beam with the second best signal quality. The UE 510 may compare the beam with the threshold. When the signal quality of the beam meets the threshold, the UE 510 may use this hierarchical progression in the second ordered beam set 555 to facilitate early termination of the process. In some cases, the second ordered beam set 555 is ordered in sequence based on which beams have the best signal quality at the UE 510. If any reference signal sent using any beam meets the signal quality threshold, the UE 510 may terminate the specific beam management process.

[0143] In some cases, the base station 505 can be configured to receive feedback information 535 from multiple UEs 510. In this case, the new order of the beams in the second ordered set of beams 555 can be based on data from many different sources. In this case, the base station 505 can analyze the feedback information from each UE and determine an order of beams that benefits the entire network.

[0144] Figure 6A block diagram 600 of a device 605 supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0145] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for sequencing directional signals during discontinuous reception, etc.). The information may be passed to other components of the device 605. The receiver 610 may be a reference Fig. 9 Examples of various aspects of the transceiver 920 are described. The receiver 610 may utilize a single antenna or a group of antennas.

[0146] The communication manager 615 may receive a reference signal set in a first ordered beam set by a UE operating in a DRX mode, receive a reference signal set in a second ordered beam set different from the first ordered beam set, the second ordered beam set identifying a signal quality of a reference signal subset received by the UE based on sending feedback information, and sending feedback information to a base station based on identifying the signal quality of the reference signal subset. The communication manager 615 may be an example of aspects of the communication manager 910 described herein.

[0147] The communication manager 615 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or in any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 615 or its subcomponents may be controlled 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0148] The communication manager 615 or its subcomponents may be physically located in various locations, including being distributed such that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, another computing device, one or more other components described according to the present disclosure, or a combination thereof.

[0149] Transmitter 620 can transmit signals generated by other components of device 605. In some examples, transmitter 620 can be collocated with receiver 610 in a transceiver module. For example, transmitter 620 can be a reference Fig. 9 Examples of various aspects of the transceiver 920 are described. The transmitter 620 may utilize a single antenna or a group of antennas.

[0150] Figure 7 A block diagram 700 of a device 705 supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of the device 605 or UE 115 as described herein. The device 705 may include a receiver 710, a communication manager 715, and a transmitter 735. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0151] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for sequencing directional signals during discontinuous reception, etc.). The information may be delivered to other components of the device 705. The receiver 710 may be a reference Fig. 9 Examples of various aspects of the transceiver 920 are described. The receiver 710 may utilize a single antenna or a group of antennas.

[0152] Communications manager 715 may be an example of aspects of communications manager 615 as described herein. Communications manager 715 may include reference signal manager 720, signal quality manager 725, and feedback manager 730. Communications manager 715 may be an example of aspects of communications manager 910 as described herein.

[0153] The reference signal manager 720 may receive a reference signal set in a first ordered beam set by a UE operating in the DRX mode, and receive a reference signal set in a second ordered beam set different from the first ordered beam set, the second ordered beam set being based on transmitting feedback information.

[0154] The signal quality manager 725 may identify the signal quality of the reference signal subset received by the UE.

[0155] Feedback manager 730 may send feedback information to the base station based on identifying the signal quality of the reference signal subset.

[0156] The transmitter 735 can transmit signals generated by other components of the device 705. In some examples, the transmitter 735 can be collocated with the receiver 710 in the transceiver module. For example, the transmitter 735 can be a reference Fig. 9 Examples of various aspects of the transceiver 920 are described. The transmitter 735 can utilize a single antenna or a group of antennas.

[0157] Figure 8 A block diagram 800 of a communication manager 805 supporting techniques for ranking directional signals during discontinuous reception in accordance with aspects of the present disclosure is shown. The communication manager 805 may be an example of aspects of the communication manager 615, the communication manager 715, or the communication manager 910 described herein. The communication manager 805 may include a reference signal manager 810, a signal quality manager 815, a feedback manager 820, a beam manager 825, a wake-up signal manager 830, a ranking manager 835, and a gap manager 840. Each of these modules may communicate with each other directly or indirectly (e.g., via one or more buses).

[0158] The reference signal manager 810 may receive a reference signal set in a first ordered beam set by a UE operating in a DRX mode. In some examples, the reference signal manager 810 may receive a reference signal set in a second ordered beam set different from the first ordered beam set, the second ordered beam set being based on transmitting feedback information. In some cases, the reference signal set includes a CSI-RS, a DRMS, a PSS, a SSS, or a combination thereof. In some cases, the reference signal set is received during an off period of a DRX mode of the UE.

[0159] The signal quality manager 815 may identify the signal quality of the reference signal subset received by the UE. In some examples, the signal quality manager 815 may identify the RSRP, RSRQ, SNR, SNIR, or a combination thereof of the reference signal subset.

[0160] Feedback manager 820 may send feedback information to the base station based on identifying the signal quality of the reference signal subset. In some cases, the UE sends feedback information during an on period of a DRX cycle or during an off period of a DRX cycle.

[0161] The beam manager 825 may identify a first beam to be used for transmitting a wake-up signal with the UE based on identifying a signal quality of the reference signal subset, wherein receiving the reference signal set in the second ordered set of beams is based on identifying the first beam. In some examples, the beam manager 825 may identify a second beam to be used for transmitting a wake-up signal based on identifying a signal quality of the reference signal subset, wherein receiving the reference signal set in the second ordered set of beams is based on identifying the second beam.

[0162] In some examples, the beam manager 825 may select a beam index of a beam in a first ordered beam set to be used to transmit a wake-up signal, wherein the feedback information is based on selecting the beam index. In some examples, the beam manager 825 may identify a departure angle of a reference signal subset or a receive array for receiving the reference signal subset, wherein the feedback information includes information related to the departure angle or the receive array of the reference signal subset, wherein receiving the reference signal set in the second ordered beam set is based on identifying the departure angle or the receive array for receiving the reference signal subset. In some cases, in the second ordered beam set, the first beam is located before the second beam. In some cases, in the second ordered beam set, the first beam is adjacent to the second beam. In some cases, the UE is in a connected discontinuous reception (C-DRX) mode.

[0163] The wake-up signal manager 830 may receive the wake-up signal using the first beam or the second beam during the on period of the DRX mode of the UE based on the sending feedback information.

[0164] The ranking manager 835 may rank the beams in the first ordered set of beams based on identifying the signal quality of the reference signal subset, wherein the feedback information is based on ranking the beams.

[0165] The gap manager 840 may configure the receive array during gap times between transmissions of the reference signal sets, wherein receiving the reference signal set in the second ordered set of beams is based on configuring the receive array during the gap times.

[0166] Fig. 9 A diagram of a system 900 including a device 905 that supports techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The device 905 may be an example of or include components of the device 605, device 705, or UE 115 described herein. The device 905 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components may communicate electronically via one or more buses (e.g., bus 945).

[0167] The communication manager 910 can receive a reference signal set in a first ordered beam set by a UE operating in DRX mode, receive a reference signal set in a second ordered beam set different from the first ordered beam set, and the second ordered beam set identifies the signal quality of a reference signal subset received by the UE based on sending feedback information, and sends feedback information to the base station based on identifying the signal quality of the reference signal subset.

[0168] I / O controller 915 can manage input and output signals for device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 915 can utilize a computer such as a 905. In some cases, the I / O controller 915 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 915 may be implemented as part of a processor. In some cases, a user may interact with the device 905 via the I / O controller 915 or via hardware components controlled by the I / O controller 915.

[0169] As described herein, transceiver 920 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, transceiver 920 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 920 can also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0170] In some cases, a wireless device may include a single antenna 925. However, in some cases, the device may have more than one antenna 925, which may be capable of transmitting or receiving multiple wireless transmissions simultaneously.

[0171] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 930 may include, among other things, a basic input / output (BIOS), which may control basic hardware or software operations, such as interacting with peripheral components or devices.

[0172] The processor 940 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, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks that support techniques for sorting directional signals during discontinuous reception).

[0173] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some cases, the code 935 may not be directly executable by the processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0174] Fig.10 A block diagram 1000 of a device 1005 supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The device 1005 may be an example of aspects of a base station 105 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0175] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for sequencing directional signals during discontinuous reception, etc.). The information may be delivered to other components of the device 1005. The receiver 1010 may be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The receiver 1010 may utilize a single antenna or a group of antennas.

[0176] The communication manager 1015 can transmit a reference signal set using a first ordered beam set, transmit a reference signal set using a second ordered beam set, receive feedback information from a UE operating in a DRX mode, the feedback information being based on the reference signal set, and generate a second ordered beam set for the reference signal set that is different from the first ordered beam set, the second ordered beam set being based on receiving the feedback information from the UE. The communication manager 1015 can be an example of aspects of the communication manager 1310 described herein.

[0177] The communication manager 1015 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or in any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1015 or its subcomponents may be controlled by a general purpose processor, DSP, ASIC, 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.

[0178] The communication manager 1015 or its subcomponents may be physically located in various locations, including being distributed such that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, another computing device, one or more other components described according to the present disclosure, or a combination thereof.

[0179] Transmitter 1020 can transmit signals generated by other components of device 1005. In some examples, transmitter 1020 can be collocated with receiver 1010 in a transceiver module. For example, transmitter 1020 can be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1020 may utilize a single antenna or a group of antennas.

[0180] Fig.11 A block diagram 1100 of a device 1105 supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the device 1005 or UE 115 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1135. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0181] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to techniques for sequencing directional signals during discontinuous reception, etc.). The information may be delivered to other components of the device 1105. The receiver 1110 may be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The receiver 1110 may utilize a single antenna or a group of antennas.

[0182] The communication manager 1115 may be an example of aspects of the communication manager 1015 as described herein. The communication manager 1115 may include a reference signal manager 1120, a feedback manager 1125, and a beam order manager 1130. The communication manager 1115 may be an example of aspects of the communication manager 1310 described herein.

[0183] The reference signal manager 1120 may transmit a reference signal set using a first ordered set of beams and transmit a reference signal set using a second ordered set of beams.

[0184] The feedback manager 1125 may receive feedback information from a UE operating in DRX mode, the feedback information being based on a reference signal set.

[0185] The beam order manager 1130 may generate a second ordered beam set for the reference signal set that is different from the first ordered beam set, the second ordered beam set being based on receiving feedback information from the UE.

[0186] Transmitter 1135 can transmit signals generated by other components of device 1105. In some examples, transmitter 1135 can be collocated with receiver 1110 in a transceiver module. For example, transmitter 1135 can be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1135 may utilize a single antenna or a group of antennas.

[0187] Fig.12 A block diagram 1200 of a communication manager 1205 supporting techniques for sorting directional signals during discontinuous reception in accordance with aspects of the present disclosure is shown. The communication manager 1205 may be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 may include a reference signal manager 1210, a feedback manager 1215, a beam order manager 1220, a beam manager 1225, a sorting manager 1230, a wake-up signal manager 1235, a ranking manager 1240, a signal quality manager 1245, and a gap manager 1250. Each of these modules may communicate with each other directly or indirectly (e.g., via one or more buses).

[0188] The reference signal manager 1210 may send a reference signal set using a first ordered beam set. In some cases, the reference signal manager 1210 may send a reference signal set using a second ordered beam set. In some cases, the reference signal set includes a channel state information reference signal CSI-RS, a DMRS, a PSS, a SSS, a PBCH signal, or a combination thereof. In some cases, the reference signal set is sent during an off period of a DRX mode of the UE. In some cases, the UE is in C-DRX mode.

[0189] The feedback manager 1215 may receive feedback information from a UE operating in DRX mode, the feedback information being based on a reference signal set. In some cases, the feedback information includes RSRP, RSRQ, SNR, SNIR, or a combination thereof. In some cases, the feedback information includes information about an angle of departure, information about a receive array of a UE for receiving a signal transmitted using a beam in a first ordered beam set, or a combination thereof. In some cases, the feedback information is received during an on period of a DRX cycle or during an off period of a DRX cycle.

[0190] The beam order manager 1220 may generate a second ordered beam set for the reference signal set that is different from the first ordered beam set, wherein the second ordered beam set is based on receiving feedback information from the UE.

[0191] The beam manager 1225 may identify a first beam in the first ordered beam set to be used for transmitting a wake-up signal to the UE based on the feedback information. In some examples, the beam manager 1225 may identify a second beam in the first ordered beam set to be used for transmitting a wake-up signal based on the feedback information.

[0192] In some examples, the beam manager 1225 can identify a beam index of a beam selected by the UE in the first ordered beam set to be used for transmitting a wake-up signal based on the feedback information, wherein generating the second ordered beam set is based on identifying the beam index selected by the UE. In some examples, the beam manager 1225 can identify a departure angle of a beam in the first ordered beam set based on the feedback information, wherein generating the second ordered beam set is based on identifying the departure angle of the beam.

[0193] The ordering manager 1230 may reorder the first ordered set of beams to prioritize the first beam based on identifying the first beam, wherein generating the second ordered set of beams is based on reordering the first ordered set of beams. In some examples, the ordering manager 1230 may reorder the first ordered set of beams to prioritize the first beam and the second beam based on identifying the first beam, wherein generating the second ordered set of beams is based on reordering the first ordered set of beams.

[0194] In some examples, the ranking manager 1230 may identify that the feedback information fails to indicate a preference between at least some of the beams included in the feedback information. In some examples, the ranking manager 1230 may rank the beams for use in the second ordered set of beams based on which beams are adjacent to each other. In some cases, in the second ordered set of beams, the first beam is located before the second beam. In some cases, in the second ordered set of beams, the first beam is adjacent to the second beam.

[0195] The wake-up signal manager 1235 may transmit the wake-up signal using the first beam and the second beam during an on period of the DRX mode of the UE.

[0196] The ranking manager 1240 may rank the beams in the first ordered set of beams based on a signal quality of each signal associated with the beams, the beams being based on the feedback information, wherein generating the second ordered set of beams is based on ranking the beams.

[0197] The signal quality manager 1245 may identify an indication of signal quality based on receiving the feedback information, wherein generating the second ordered set of beams is based on identifying the indication of signal quality.In some cases, the number of reference signals in the reference signal subset is less than the number of reference signals in the reference signal set.

[0198] The gap manager 1250 may identify a gap time between transmissions of the reference signal set based on feedback information indicating that the UE is to change a receive array to receive two adjacent signals in the reference signal set, wherein transmitting the reference signal set using the second ordered beam set is based on identifying the gap time.

[0199] Fig.13 A diagram of a system 1300 including a device 1305 that supports techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The device 1305 may be an example of or include components of the device 1005, device 1105, or base station 105 described herein. The device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1310, a network communication manager 1315, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an inter-station communication manager 1345. These components may be in electronic communication via one or more buses (e.g., bus 1350).

[0200] The communication manager 1310 may send a reference signal set using a first ordered beam set, send a reference signal set using a second ordered beam set, receive feedback information from a UE operating in a DRX mode, the feedback information being based on the reference signal set, and generate a second ordered beam set for the reference signal set that is different from the first ordered beam set, the second ordered beam set being based on receiving the feedback information from the UE.

[0201] The network communications manager 1315 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1315 may manage the transmission of data communications for client devices, such as one or more UEs 115.

[0202] As described herein, transceiver 1320 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, transceiver 1320 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1320 can also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0203] In some cases, a wireless device may include a single antenna 1325. However, in some cases, the device may have more than one antenna 1325, which may be capable of transmitting or receiving multiple wireless transmissions simultaneously.

[0204] Memory 1330 may include RAM, ROM, or a combination thereof. Memory 1330 may store computer readable code 1335 including instructions that, when executed by a processor (e.g., processor 1340), cause the device to perform various functions described herein. In some cases, memory 1330 may include, among other things, a BIOS that may control basic hardware or software operations, such as interacting with peripheral components or devices.

[0205] Processor 1340 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, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1340 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause the device to perform various functions (e.g., functions or tasks that support techniques for sorting directional signals during discontinuous reception).

[0206] The inter-site communication manager 1345 may manage communications with other base stations 105 and may 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 1345 may 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 1345 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0207] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some cases, the code 1335 may not be directly executable by the processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0208] Fig.14 A flow chart illustrating a method 1400 for supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1400 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute the instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0209] At 1405, the base station may send a reference signal set using a first ordered beam set. Operation 1405 may be performed according to methods described herein. In some examples, the reference signal set may be transmitted by, for example, Figures 10 to 13 Aspects of operation 1405 are performed with reference to a signal manager as described.

[0210] At 1410, a base station may receive feedback information from a UE operating in a DRX mode, the feedback information being based on a reference signal set. Operation 1410 may be performed according to methods described herein. In some examples, the feedback information may be provided by a reference signal set. Figures 10 to 13 The described feedback manager performs aspects of operation 1410 .

[0211] At 1415, the base station may generate a second ordered set of beams for the reference signal set that is different from the first ordered set of beams, the second ordered set of beams being based on receiving feedback information from the UE. Operation 1415 may be performed according to methods described herein. In some examples, the base station may generate a second ordered set of beams for the reference signal set that is different from the first ordered set of beams, the second ordered set of beams being based on receiving feedback information from the UE. Figures 10 to 13 The beam ordering manager described herein performs aspects of operation 1415 .

[0212] At 1420, the base station may send a reference signal set using a second ordered beam set. Operation 1420 may be performed according to methods described herein. In some examples, the reference signal set may be transmitted by, for example, Figures 10 to 13 Aspects of operation 1420 are performed with reference to the signal manager described.

[0213] Fig.15A flow chart illustrating a method 1500 for supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1500 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0214] At 1505, the base station may send a reference signal set using a first ordered beam set. Operation 1505 may be performed according to methods described herein. In some examples, the reference signal set may be transmitted by a base station such as a reference signal set. Figures 10 to 13 Aspects of operation 1505 are performed with reference to a signal manager as described.

[0215] At 1510, a base station may receive feedback information from a UE operating in a DRX mode, the feedback information being based on a reference signal set. Operation 1510 may be performed according to methods described herein. In some examples, the feedback information may be provided by a reference signal set. Figures 10 to 13 The described feedback manager performs aspects of operation 1510.

[0216] At 1515, the base station may identify a first beam in the first ordered beam set to be used to transmit a wake-up signal to the UE based on the feedback information. Operation 1515 may be performed according to the methods described herein. In some examples, the base station may be configured as described in reference to Figures 10 to 13 The beam manager described is used to perform aspects of operation 1515.

[0217] At 1520, the base station may identify a second beam in the first ordered beam set to be used to transmit a wake-up signal to the UE based on the feedback information. Operation 1520 may be performed according to the methods described herein. In some examples, the base station may be configured as shown in FIG. Figures 10 to 13 The beam manager described herein performs aspects of operation 1520 .

[0218] At 1525, the base station may reorder the first ordered set of beams to prioritize the first beam and the second beam based on identifying the first beam and the second beam, wherein generating the second ordered set of beams is based on reordering the first ordered set of beams. Operation 1525 may be performed according to methods described herein. In some examples, the base station may be configured as described in reference to Figures 10 to 13 The described sort manager performs various aspects of operation 1525.

[0219] At 1530, the base station may generate a second ordered set of beams for the reference signal set that is different from the first ordered set of beams based on reordering the first ordered set of beams, the second ordered set of beams based on receiving feedback information from the UE. Operation 1530 may be performed according to the methods described herein. In some examples, the reference signal may be generated by, for example, Figures 10 to 13 The beam ordering manager described herein performs aspects of operation 1530 .

[0220] At 1535, the base station may send a reference signal set using a second ordered beam set. Operation 1535 may be performed according to methods described herein. In some examples, the reference signal set may be transmitted by a base station such as a reference signal set. Figures 10 to 13 Aspects of operation 1535 are performed with reference to the signal manager described.

[0221] Fig.16 A flow chart illustrating a method 1600 for supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0222] At 1605, the UE may receive a reference signal set in a first ordered beam set by a UE operating in a DRX mode, and operation 1605 may be performed according to the methods described herein. In some examples, the reference signal set may be received by a UE operating in a DRX mode. Figures 6 to 9 Aspects of operation 1605 are performed with reference to a signal manager as described.

[0223] At 1610, the UE may identify a signal quality of a subset of reference signals received by the UE. Operation 1610 may be performed according to methods described herein. In some examples, the UE may identify a signal quality of a subset of reference signals received by the UE. Figures 6 to 9 The signal quality manager is described to perform aspects of operation 1610.

[0224] At 1615, the UE may send feedback information to the base station based on the signal quality of the identified reference signal subset. Operation 1615 may be performed according to the methods described herein. In some examples, the UE may be configured to perform the following steps: Figures 6 to 9 The described feedback manager performs aspects of operation 1615 .

[0225] At 1620, the UE receives a reference signal set in a second ordered beam set different from the first ordered beam set, the second ordered beam set being based on sending feedback information. Operation 1620 may be performed according to methods described herein. In some examples, the reference signal set may be received by, for example, Figures 6 to 9 Aspects of operation 1620 are performed with reference to the signal manager described.

[0226] Fig.17 A flow chart illustrating a method 1700 for supporting techniques for sorting directional signals during discontinuous reception according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0227] At 1705, the UE may receive a reference signal set in a first ordered beam set by a UE operating in a DRX mode, and operation 1705 may be performed according to the methods described herein. In some examples, the reference signal set may be received by a UE operating in a DRX mode. Figures 6 to 9 Aspects of operation 1705 are performed with reference to a signal manager as described.

[0228] At 1710, the UE may identify a signal quality of a subset of reference signals received by the UE. Operation 1710 may be performed according to methods described herein. In some examples, the UE may identify a signal quality of a subset of reference signals received by the UE. Figures 6 to 9 The signal quality manager is described to perform aspects of operation 1710.

[0229] At 1715, the UE may identify a first beam to be used to transmit a wake-up signal using the UE based on the signal quality of the identified reference signal subset. Operation 1715 may be performed according to the methods described herein. In some examples, the UE may be configured as described in reference to Figures 6 to 9 The beam manager described is used to perform aspects of operation 1715.

[0230] At 1720, the UE may identify a second beam to be used for transmitting a wake-up signal based on the signal quality of the identified reference signal subset. Operation 1720 may be performed according to the methods described herein. In some examples, the UE may be configured as shown in FIG. Figures 6 to 9 The beam manager described is used to perform aspects of operation 1720.

[0231] At 1725, the UE may send feedback information to the base station based on identifying the reference signal subset, the signal quality of the first beam, and the second beam. Operation 1725 may be performed according to the methods described herein. In some examples, the UE may be configured to receive the reference signal subset, the first beam, and the second beam. Figures 6 to 9 The described feedback manager performs aspects of operation 1725.

[0232] At 1730, the UE receives a reference signal set in a second ordered beam set different from the first ordered beam set based on identifying the first beam and the second beam, the second ordered beam set based on sending feedback information. Operation 1730 may be performed according to the methods described herein. In some examples, the reference signal set may be received by, for example, Figures 6 to 9 Aspects of operation 1730 are performed with reference to a signal manager as described.

[0233] It should be noted that the methods described above describe possible embodiments, and that operations and steps may be rearranged or otherwise modified, and other embodiments are possible. Furthermore, aspects from two or more methods may be combined.

[0234] The technology described herein can be used in various wireless communication systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA) and other systems. CDMA systems can implement radio technologies such as CDMA2000, 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. TDMA systems can implement radio technologies such as Global System for Mobile Communications (GSM).

[0235] OFDMA systems can implement radio technologies such as Ultra Mobile Broadband (UMB), E-UTRA, Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-Orthogonal Frequency Division Multiplexing (Flash-OFDM), etc. UTRA and E-UTRA are parts of Universal Mobile Telecommunications System (UMTS). LTE, LTE-A and LTE-APro are UMTS versions using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR and GSM are described in documents of 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 above can be used for the systems and radio technologies mentioned herein as well as other systems and radio technologies. Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in many of the descriptions, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR applications.

[0236] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to a UE 115 that subscribes to a service from a network provider. A small cell may be associated with a base station 105 with lower power than a macro cell, and the small cell may operate in a frequency band that is the same or different (e.g., licensed, unlicensed, etc.) from the macro cell. According to various examples, a small cell may include a pico cell, a femto cell, and a micro cell. A pico cell, for example, may cover a small geographic area and may allow unrestricted access to a UE 115 that subscribes to a service from a network provider. A femto cell may also cover a small geographic area (e.g., a home) and may provide unrestricted access to a UE 115 associated with a femto cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 of a home user, 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, a pico eNB, a femto eNB, or a home eNB. An eNB may support one or more (eg, two, three, four, etc.) cells and may also support communication using one or more component carriers.

[0237] The wireless communication system 100 or the system described herein may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0238] 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 that may be mentioned throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0239] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic device (PLD), 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 optionally, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0240] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or sent via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination of these. Features that implement the functions may also be physically located in a variety of locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0241] Computer-readable media include both non-transitory computer storage media and communication media (including any media that facilitates the transfer of computer programs from one place to another).Non-transitory storage media can be any available media that can be accessed by a general or special computer.For example and without limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disc (CD) ROM, flash memory, or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or may be used to carry or store the required program code methods in the form of instructions or data structures and any other non-transitory media that can be accessed by a general or special computer, or a general or special processor.In addition, any connection is appropriately referred to as a computer-readable medium.For example, if software is sent from a website, server or other remote source using coaxial cable, optical cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, coaxial cable, optical fiber cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of the medium. Disk and disc, as used herein, includes CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with the aid of lasers. Combinations of the above are also included within the scope of computer-readable media.

[0242] Moreover, as used herein (including in the claims), "or" as used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of..." or "one or more") indicates an inclusive list, so that, for example, at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Moreover, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" can 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."

[0243] In the drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes the similar components. If only the first numerical reference label is used in the specification, the description applies to any of the similar components having the same first reference label, regardless of the second reference label or other subsequent reference labels.

[0244] The descriptions set forth herein in conjunction with the accompanying drawings describe exemplary configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "exemplary" as used herein means "used as an example, paradigm, or illustration," rather than "preferred" or "superior to other examples." The detailed description includes specific details for providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some examples, well-known structures and devices are shown in block diagram form to avoid making the concepts of the described examples unclear.

[0245] 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 given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication, comprising: Receiving, by a user equipment (UE) operating in a discontinuous reception (DRX) mode, a reference signal set in a first ordered beam set; identifying a signal quality of a subset of reference signals received by the UE; sending feedback information to a base station based at least in part on identifying the signal quality of the subset of reference signals; as well as The set of reference signals is received in a second ordered set of beams that is different from the first ordered set of beams but includes the same beam configuration as the first ordered set of beams, the second ordered set of beams being based on reordering the first ordered set of beams and at least in part on sending the feedback information.

2. The method according to claim 1, further comprising: A first beam to be used for transmitting a wake-up signal with the UE is identified based at least in part on identifying the signal quality of the reference signal subset, wherein receiving the reference signal set in the second ordered set of beams is based at least in part on identifying the first beam.

3. The method according to claim 2, further comprising: A second beam to be used for transmitting the wake-up signal is identified based at least in part on identifying the signal quality of the subset of reference signals, wherein receiving the set of reference signals in the second ordered set of beams is based at least in part on identifying the second beam.

4. The method according to claim 3, wherein: In the second set of ordered beams, the first beam is located before the second beam; and wherein, in the second set of ordered beams, the first beam is adjacent to the second beam.

5. The method according to claim 3, further comprising: Based at least in part on sending the feedback information, the wake-up signal is received using the first beam or the second beam during an on period of the DRX mode of the UE.

6. The method according to claim 1, further comprising: The beams in the first ordered set of beams are ranked based at least in part on identifying the signal qualities of the reference signal subset, wherein the feedback information is based at least in part on ranking the beams.

7. The method according to claim 1, wherein: Identifying the signal quality of each signal further comprises: Identify the received signal received power RSRP, received signal received quality RSRQ, signal to noise ratio SNR, signal to interference plus noise ratio SNIR or a combination thereof of the reference signal subset.

8. The method according to claim 1, further comprising: Selecting a beam index of a beam in the first ordered set of beams to be used for transmitting a wake-up signal, wherein the feedback information is based at least in part on selecting the beam index.

9. The method according to claim 1, further comprising: identifying an angle of departure for the reference signal subset or a receive array for receiving the reference signal subset, wherein the feedback information includes information related to the angle of departure for the reference signal subset or the receive array, wherein receiving the reference signal set in the second ordered beam set is based at least in part on identifying the angle of departure or the receive array for receiving the reference signal subset.

10. The method according to claim 1, wherein: The reference signal set includes a channel state information reference signal CSI-RS, a demodulation reference signal DMRS, a primary synchronization signal PSS or a secondary synchronization signal SSS or a combination thereof.

11. The method according to claim 1, further comprising: A receive array is configured during interstitial times between transmissions of the reference signal sets, wherein receiving the reference signal set in the second ordered set of beams is based at least in part on configuring the receive array during the interstitial times.

12. The method according to claim 1, wherein: The reference signal set is received during an off period of the DRX mode of the UE.

13. The method according to claim 1, wherein: The UE is in a connected discontinuous reception C-DRX mode.

14. The method according to claim 1, wherein: The UE sends the feedback information during an on period of a DRX cycle or during an off period of the DRX cycle.

15. The method according to claim 1, wherein: The number of reference signals in the reference signal subset is smaller than the number of reference signals in the reference signal set.

16. A method for wireless communication, comprising: transmitting a reference signal set using a first ordered beam set; receiving feedback information from a user equipment (UE) operating in a discontinuous reception (DRX) mode, the feedback information being based at least in part on the set of reference signals; generating a second ordered set of beams for the reference signal set that is different from the first ordered set of beams by reordering the first ordered set of beams, the second ordered set of beams being based at least in part on receiving the feedback information from the UE; as well as The set of reference signals is transmitted using the second ordered set of beams.

17. The method according to claim 16, further comprising: A first beam in the first ordered set of beams to be used to transmit a wake-up signal to the UE is identified based at least in part on the feedback information.

18. The method according to claim 17, further comprising: The first ordered set of beams is reordered to prioritize the first beam based at least in part on identifying the first beam, wherein generating the second ordered set of beams is based at least in part on reordering the first ordered set of beams.

19. The method according to claim 17, further comprising: identifying, based at least in part on the feedback information, a second beam in the first ordered set of beams to be used to transmit the wake-up signal; as well as The first ordered set of beams is reordered to prioritize the first beam and the second beam based at least in part on identifying the first beam, wherein generating the second ordered set of beams is based at least in part on reordering the first ordered set of beams.

20. The method according to claim 19, wherein: The first beam is located before the second beam in the second ordered set of beams; and wherein the first beam is adjacent to the second beam in the second ordered set of beams.

21. The method of claim 19, further comprising: During an on period of the DRX mode of the UE, the wake-up signal is transmitted using the first beam and the second beam.

22. The method of claim 16, further comprising: The beams in the first ordered set of beams are ranked based at least in part on a signal quality of each signal associated with the beams, the beams being based at least in part on the feedback information, wherein generating the second ordered set of beams is based at least in part on ranking the beams.

23. The method of claim 16, further comprising: Identifying an indication of signal quality based at least in part on receiving the feedback information, wherein generating the second ordered beam set is based at least in part on identifying the indication of signal quality, wherein the feedback information includes received signal received power RSRP, received signal received quality RSRQ, signal-to-noise ratio SNR, signal-to-interference-plus-noise ratio SNIR, or a combination thereof.

24. The method of claim 16, further comprising: A beam index for selecting a beam in the first ordered set of beams to be used for transmitting a wake-up signal by the UE is identified based at least in part on the feedback information, wherein generating the second ordered set of beams is based at least in part on identifying the beam index selected by the UE.

25. The method of claim 16, wherein: The reference signal set includes a channel state information reference signal CSI-RS, a demodulation reference signal DMRS, a primary synchronization signal PSS, a secondary synchronization signal SSS or a physical broadcast channel PBCH signal or a combination thereof.

26. The method of claim 16, further comprising: Based at least in part on the feedback information indicating that the UE is to change a receive array to receive two adjacent signals in the reference signal set, identifying a gap time between transmissions of the reference signal set, wherein transmitting the reference signal set using the second ordered beam set is based at least in part on identifying the gap time.

27. The method of claim 16, wherein: The UE is in a connected discontinuous reception C-DRX mode.

28. The method of claim 16, wherein: The feedback information is received during an on period of a DRX cycle or during an off period of the DRX cycle.

29. An apparatus for wireless communication, comprising: means for receiving, by a user equipment (UE) operating in a discontinuous reception (DRX) mode, a reference signal set in a first ordered beam set; means for identifying a signal quality of a subset of reference signals received by the UE; means for ranking the beams in the first ordered set of beams based at least in part on identifying the signal qualities of the reference signal subset; means for sending feedback information to a base station based at least in part on identifying the signal quality of the reference signal subset, wherein the feedback information is based at least in part on ranking the beams of the first ordered set of beams; as well as Means for receiving the set of reference signals in a second ordered set of beams different from the first ordered set of beams but comprising the same beam configuration as the first ordered set of beams, the second ordered set of beams based on reordering the first ordered set of beams and based at least in part on sending the feedback information.

30. An apparatus for wireless communication, comprising: means for transmitting a set of reference signals using a first ordered set of beams; means for receiving feedback information from a user equipment (UE) operating in a discontinuous reception (DRX) mode, the feedback information being based at least in part on the set of reference signals; means for generating a second ordered set of beams for the reference signal set that is different from the first ordered set of beams by reordering the first ordered set of beams, the second ordered set of beams being based at least in part on receiving the feedback information from the UE; as well as Means for transmitting the set of reference signals using the second ordered set of beams.

Images