WO2019109309A1 - Valeur de réception discontinue spécifiée par un équipement utilisateur - Google Patents

Valeur de réception discontinue spécifiée par un équipement utilisateur Download PDF

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Publication number
WO2019109309A1
WO2019109309A1 PCT/CN2017/115041 CN2017115041W WO2019109309A1 WO 2019109309 A1 WO2019109309 A1 WO 2019109309A1 CN 2017115041 W CN2017115041 W CN 2017115041W WO 2019109309 A1 WO2019109309 A1 WO 2019109309A1
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WIPO (PCT)
Prior art keywords
drx
value
drx value
mode
message
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PCT/CN2017/115041
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English (en)
Inventor
Zhenqing CUI
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Qualcomm Incorporated
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Publication date
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Priority to PCT/CN2017/115041 priority Critical patent/WO2019109309A1/fr
Publication of WO2019109309A1 publication Critical patent/WO2019109309A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication

Definitions

  • the following relates generally to wireless communication, and more specifically to user equipment (UE) specified discontinuous reception (DRX) value.
  • UE user equipment
  • DRX discontinuous reception
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • a wireless multiple-access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) .
  • UE user equipment
  • a UE may be configured to operate with more than one public land mobile network (PLMN) operator.
  • PLMN public land mobile network
  • SIM subscriber identification module
  • Some models may be referred to as dual SIM dual standby (DSDS) UEs where the SIM cards share a common communication chain.
  • DSDS UEs may utilize time multiplexing techniques to access the SIM cards such that one SIM card might be active while the other SIM card is idle or otherwise in a standby mode.
  • wireless communication systems may be configured with a discontinuous reception (DRX) mode of operation where an idle device transitions between a radio resource control (RRC) idle state where the device powers down certain functions and/or processes for a time period and an on state where the device powers up certain functions and/or processes to monitor for paging signals from a network device.
  • the DRX operation is typically configured by the network according to a DRX cycle (or value) .
  • the DRX cycle generally spans the time period between consecutive on states (or idle states) .
  • the DRX mode is configured and signaled to the UE in RRC signaling.
  • DRX configurations may present a problem for certain UEs, such a DSDS UEs.
  • a first subscriber (SUB) associated with the first SIM card may have an ongoing wireless communication (e.g., an ongoing call, an ongoing data exchange, etc. ) while the second SUB associated with the second SIM car may be operating in a DRX mode.
  • the DRX cycle is configured by the network and, in some instances, may interfere with the ongoing wireless communications of the first SUB.
  • DRX operations where the DRX cycle is relatively short may result in the first SUB being placed in standby while the second SUB tunes to its associated provider to monitor for the paging messages.
  • These “tune-aways” while operating in the DRX mode may disrupt the ongoing wireless communications of the first SUB (e.g., in a low latency scenario) .
  • the described techniques relate to improved methods, systems, devices, or apparatuses that support user equipment (UE) specified discontinuous reception (DRX) value.
  • UE user equipment
  • DRX discontinuous reception
  • the described techniques provide for the UE to select the DRX value to be used while operating in the DRX mode.
  • the network may broadcast signals containing system information (SI) .
  • SI system information
  • One aspect of the SI may indicate a default DRX value, which may indicate the DRX cycle length or duration of a DRX cycle.
  • the UE may receive the indication and respond by transmitting a UE-specific DRX value that is different from the broadcast or default DRX value.
  • the UE and network e.g., associated base station
  • the UE and network may adopt the UE-specific DRX value based on the UE-specific DRX value being longer than the default DRX value, e.g., the fact that the indicated UE-specific DRX value is longer may signal to the network to overwrite the default DRX value for that UE with the UE-specific DRX value.
  • the UE and network may adopt the UE-specific DRX value simply based on the UE-specific DRX value being indicated, e.g., the default DRX value may be overwritten for that UE by the UE-specific DRX value.
  • the UE may transmit the indication of the UE-specific DRX value based on power consumption concerns related to the default DRX value (e.g., the default DRX value is too short, thus resulting in increased power consumption by the UE) .
  • the UE may transmit the indication of the UE-specific DRX value based on an operating mode, such as the UE operating in a dual-subscriber (SUB) mode. For example, the UE may determine that a first SUB has ongoing communications and a second SUB is in an idle mode.
  • an operating mode such as the UE operating in a dual-subscriber (SUB) mode. For example, the UE may determine that a first SUB has ongoing communications and a second SUB is in an idle mode.
  • the UE may determine that the default DRX value is too short, e.g., the frequent transitions to the on state to monitor for paging signals for the second SUB may interfere with the ongoing communications of the first SUB. Accordingly, the UE may select a duration of the UE-specific DRX value that is longer than the duration of the default DRX value.
  • a method of wireless communication may include receiving an indication of a default DRX value to be used for a DRX mode, transmitting a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and operating in the DRX mode in accordance with the UE-specific DRX value.
  • the apparatus may include means for receiving an indication of a default DRX value to be used for a DRX mode, means for transmitting a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and means for operating in the DRX mode in accordance with the UE-specific DRX value.
  • the apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory.
  • the instructions may be operable to cause the processor to receive an indication of a default DRX value to be used for a DRX mode, transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and operate in the DRX mode in accordance with the UE-specific DRX value.
  • a non-transitory computer-readable medium for wireless communication may include instructions operable to cause a processor to receive an indication of a default DRX value to be used for a DRX mode, transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and operate in the DRX mode in accordance with the UE-specific DRX value.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may further include processes, features, means, or instructions for operating in the DRX mode in accordance with the UE-specific DRX value may be based at least in part on the UE-specific DRX value being transmitted.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may further include processes, features, means, or instructions for determining that the duration of the default DRX value may not satisfy a threshold, wherein the message may be transmitted based at least in part on the determining.
  • the determining may be based at least in part on an available power level associated with the UE.
  • receiving the indication of the default DRX value comprises: receiving a broadcast message carrying SI that indicates the default DRX value.
  • the broadcast message comprises one or more of a master information block (MIB) message, or a system information block (SIB) message, or a primary synchronization signal (PSS) , or a secondary synchronization signal (SSS) , or a combination thereof.
  • MIB master information block
  • SIB system information block
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • transmitting the message indicating the UE-specific DRX value comprises: transmitting at least one of a tracking area update (TAU) message or an attach request message to indicate the UE-specific DRX value.
  • TAU tracking area update
  • determining that the UE may be operating in the dual-subscriber mode comprises: determining that a first subscriber may be in an active operational mode associated with ongoing wireless communications, the ongoing wireless communications being associated with a latency requirement.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may further include processes, features, means, or instructions for determining that a second subscriber may be in an idle mode associated with the DRX mode.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may further include processes, features, means, or instructions for selecting the duration of the UE-specific DRX value based on the latency requirement of the ongoing wireless communications.
  • operating in the DRX mode comprises: tuning away from a first subscriber that may be in an active operational mode and to a second subscriber to perform DRX operations.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may further include processes, features, means, or instructions for tuning away from the second subscriber to the first subscriber based at least in part on a result of the DRX operations.
  • the UE-specific DRX value is a configured value or selected by the UE.
  • a method of wireless communication may include transmitting an indication of a default DRX value to be used by a UE for a DRX mode, receiving a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and transmitting one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • the apparatus may include means for transmitting an indication of a default DRX value to be used by a UE for a DRX mode, means for receiving a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and means for transmitting one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • the apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory.
  • the instructions may be operable to cause the processor to transmit an indication of a default DRX value to be used by a UE for a DRX mode, receive a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and transmit one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • a non-transitory computer-readable medium for wireless communication may include instructions operable to cause a processor to transmit an indication of a default DRX value to be used by a UE for a DRX mode, receive a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and transmit one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • Some examples of the method, apparatus, and non-transitory computer-readable medium described above may further include processes, features, means, or instructions for transmitting the one or more paging messages according to the UE-specific DRX value may be based at least in part on the UE-specific DRX value being received.
  • transmitting the indication of the default DRX value comprises: transmitting a broadcast message carrying SI that indicates the default DRX value.
  • the broadcast message comprises one or more of a MIB message, or a SIB message, or a PSS, or a SSS, or a combination thereof.
  • receiving the indication of the UE-specific DRX value comprises: receiving at least one of a TAU message or an attach request message that indicates the UE-specific DRX value.
  • FIG. 1 illustrates an example of a system for wireless communication that supports user equipment (UE) specified discontinuous reception (DRX) value in accordance with aspects of the present disclosure.
  • UE user equipment
  • DRX discontinuous reception
  • FIG. 2 illustrates an example of a timing diagram that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of a process that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • FIG. 4 illustrates an example of a flowchart that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • FIGs. 5 through 7 show block diagrams of a device that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • FIG. 8 illustrates a block diagram of a system including a UE that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • FIGs. 9 through 11 show block diagrams of a device that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • FIG. 12 illustrates a block diagram of a system including a base station that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • FIGs. 13 through 15 illustrate methods for UE specified DRX value in accordance with aspects of the present disclosure.
  • Certain user equipment may operate in a dual subscriber (SUB) identification module (SIM) dual standby (DSDS) mode where two SUBs share a single communication chain of the UE. That is, only one SUB can utilize the communication chain at any given instance. Moreover, switching between the two SUBs incurs a delay time while the communication chain is tuned away from one SUB and to the second SUB, and then again tuned from the second SUB and back to the first SUB. In some situations, one SUB may be idle and operating in a discontinuous reception (DRX) mode while the second SUB has ongoing communications. Operating in the DRX mode by the first SUB may include the communication chain being periodically tuned from the second SUB to the first SUB to monitor for paging signals.
  • DRX discontinuous reception
  • the frequency that this tune-away procedure occurs is determined by the DRX value (also referred to as the DRX cycle) of the DRX mode.
  • DRX value also referred to as the DRX cycle
  • the UE may still be power-constrained, and thus may benefit from having longer DRX values. Shorter DRX values may result in a UE waking up too frequently, from a power consumption perspective. Longer DRX values may result in reduced power consumption by the UE.
  • Conventional wireless communication systems are configured such that the network advertises a default DRX value in a broadcast message, e.g., system information (SI) indicating the default DRX value that is broadcast by base stations.
  • SI system information
  • the UE may provide a UE-specific DRX value to the network, but the UE and network are configured such that the shortest of the default DRX value and the UE-specific DRX value is adopted for the DRX mode of the UE.
  • This approach does not provide a mechanism for the UE to determine which DRX value is adopted for the DRX mode operations. Accordingly, this may result in adoption of a short DRX value that interferes with the ongoing communications of the second SUB when the UE tunes to the first SUB more often to monitor for the paging signals.
  • aspects of the disclosure are initially described in the context of a wireless communications system. Aspects of the present disclosure provide for the UE to determine which DRX value is implemented for operations in a DRX mode. Broadly, the UE may transmit a signal indicating the UE-specific DRX value and then operate in the DRX mode according to the UE-specific DRX mode. In some aspects, the UE-specific DRX value may be longer than the default DRX value, e.g., may have a longer duration or DRX cycle periodicity. In some aspects, the UE and network may adopt the UE-specific DRX value based on the UE-specific DRX value being longer than the default DRX value.
  • the UE and network may adopt the UE-specific DRX value based on the UE transmitting an indication of the UE-specific DRX value.
  • the UE may determine that the default DRX value is too short, such as when the UE is power constrained or is DSDS configured and one SUB has ongoing communications while the other SUB is idle.
  • the UE may select the duration of the UE-specific DRX value based on the type of ongoing communications of the active SUB, e.g., based on the type of ongoing communications, based on the latency requirements of the ongoing communications, based on the priority of the ongoing communications, and the like. Accordingly, aspects of the described techniques provide a mechanism where the UE can control which DRX value is used during DRX operations.
  • FIG. 1 illustrates an example of a wireless communications system 100 in accordance with various aspects of the present disclosure.
  • the wireless communications system 100 includes base stations 105, UEs 115, and a core network 130.
  • the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-A Pro LTE-A Pro
  • NR New Radio
  • wireless communications 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.
  • ultra-reliable e.g., mission critical
  • Base stations 105 may wirelessly communicate with UEs 115 via one or more base station antennas.
  • Base stations 105 described herein may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation Node B or giga-nodeB (either of which may be referred to as a gNB) , a Home NodeB, a Home eNodeB, or some other suitable terminology.
  • Wireless communications system 100 may include base stations 105 of different types (e.g., macro or small cell base stations) .
  • the UEs 115 described herein may be able to communicate with various types of base stations 105 and network equipment including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like.
  • Each base station 105 may be associated with a particular geographic coverage area 110 in which communications with various UEs 115 is supported. Each base station 105 may provide communication coverage for a respective geographic coverage area 110 via communication links 125, and communication links 125 between a base station 105 and a UE 115 may utilize one or more carriers. Communication links 125 shown in wireless communications system 100 may include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115. Downlink transmissions may also be called forward link transmissions while uplink transmissions may also be called reverse link transmissions.
  • the geographic coverage area 110 for a base station 105 may be divided into sectors making up only a portion of the geographic coverage area 110, and each sector may be associated with a cell.
  • each base station 105 may provide communication coverage for a macro cell, a small cell, a hot spot, or other types of cells, or various combinations thereof.
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap, and overlapping geographic coverage areas 110 associated with different technologies may be supported by the same base station 105 or by different base stations 105.
  • the wireless communications 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.
  • the term “cell” refers to a logical communication entity used for communication with a base station 105 (e.g., over a carrier) , and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) ) operating via the same or a different carrier.
  • a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., machine-type communication (MTC) , narrowband Internet-of-Things (NB-IoT) , enhanced mobile broadband (eMBB) , or others) that may provide access for different types of devices.
  • MTC machine-type communication
  • NB-IoT narrowband Internet-of-Things
  • eMBB enhanced mobile broadband
  • the term “cell” may refer to a portion of a geographic coverage area 110 (e.g., a sector) over which the logical entity operates.
  • UEs 115 may be dispersed throughout the wireless communications system 100, and each UE 115 may be stationary or mobile.
  • a 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 terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client.
  • a 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.
  • PDA personal digital assistant
  • a 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, or the like, which may be implemented in various articles such as appliances, vehicles, meters, or the like.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • MTC massive machine type communications
  • Some UEs 115 may be low cost or low complexity devices, and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) .
  • M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a base station 105 without human intervention.
  • M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay that information to a central server or application program that can make use of the information or present the information to humans interacting with the program or application.
  • Some UEs 115 may be designed to collect information or enable 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 charging.
  • Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception simultaneously) . In some examples half-duplex communications may be performed at a reduced peak rate. Other power conservation techniques for UEs 115 include entering a power saving “deep sleep” mode when not engaging in active communications, or operating over a limited bandwidth (e.g., according to narrowband communications) . In some cases, UEs 115 may be designed to support critical functions (e.g., mission critical functions) , and a wireless communications system 100 may be configured to provide ultra-reliable communications for these functions.
  • critical functions e.g., mission critical functions
  • a UE 115 may also be able to communicate directly with other UEs 115 (e.g., using a peer-to-peer (P2P) or device-to-device (D2D) protocol) .
  • P2P peer-to-peer
  • D2D device-to-device
  • One or more of a group of UEs 115 utilizing D2D communications may be within the geographic coverage area 110 of a base station 105.
  • Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105, or be otherwise unable to receive transmissions from a base station 105.
  • groups of UEs 115 communicating via D2D communications may utilize a one-to-many (1: M) system in which each UE 115 transmits to every other UE 115 in the group.
  • a base station 105 facilitates the scheduling of resources for D2D communications.
  • D2D communications are carried out between UEs 115 without the involvement of a base
  • Base stations 105 may communicate with the core network 130 and with one another. For example, base stations 105 may interface with the core network 130 through backhaul links 132 (e.g., via an S1 or other interface) . Base stations 105 may communicate with one another over backhaul links 134 (e.g., via an X2 or other interface) either directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130) .
  • backhaul links 132 e.g., via an S1 or other interface
  • backhaul links 134 e.g., via an X2 or other interface
  • 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 UEs 115 served by base stations 105 associated with the EPC.
  • User IP packets may be transferred through the S-GW, which itself may be connected to the P-GW.
  • the P-GW may provide IP address allocation as well as other functions.
  • the P-GW may be connected to the network operators IP services.
  • the operators IP services may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched (PS) Stream
  • At least some of the network devices may include subcomponents such as an access network entity, which may be an example of an access node controller (ANC) .
  • Each access network entity may communicate with UEs 115 through a number of other access network transmission entities, which may be referred to as a radio head, a smart radio head, or a transmission/reception point (TRP) .
  • TRP transmission/reception point
  • 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 consolidated into a single network device (e.g., a base station 105) .
  • Wireless communications system 100 may operate using one or more frequency bands, typically in the range of 300 MHz to 300 GHz.
  • the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band, since the wavelengths range from approximately one decimeter to one meter in length.
  • UHF waves may be blocked or redirected by buildings and environmental features. However, the waves may penetrate structures sufficiently for a macro cell to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter range (e.g., less than 100 km) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • HF high frequency
  • VHF very high frequency
  • Wireless communications system 100 may also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band.
  • SHF region includes bands such as the 5 GHz industrial, scientific, and medical (ISM) bands, which may be used opportunistically by devices that can tolerate interference from other users.
  • ISM bands 5 GHz industrial, scientific, and medical bands
  • Wireless communications system 100 may also operate in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) , also known as the millimeter band.
  • EHF extremely high frequency
  • wireless communications system 100 may support millimeter wave (mmW) communications between UEs 115 and base stations 105, and EHF antennas of the respective devices may be even smaller and more closely spaced than UHF antennas. In some cases, this may facilitate use of antenna arrays within a UE 115.
  • mmW millimeter wave
  • the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. Techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.
  • wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands.
  • wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz ISM band.
  • LAA License Assisted Access
  • LTE-U LTE-Unlicensed
  • NR NR technology
  • an unlicensed band such as the 5 GHz ISM band.
  • wireless devices such as base stations 105 and UEs 115 may employ listen-before-talk (LBT) procedures to ensure a frequency channel is clear before transmitting data.
  • LBT listen-before-talk
  • operations in unlicensed bands may be based on a CA configuration in conjunction with CCs operating in a licensed band (e.g., LAA) .
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination of these.
  • Duplexing in unlicensed spectrum may be based on frequency division duplexing (FDD) , time division duplexing (TDD) , or a combination of both.
  • FDD frequency division duplexing
  • TDD time division duplexing
  • base station 105 or 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) communications, or beamforming.
  • wireless communications 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) , where the transmitting device is equipped with multiple antennas and the receiving devices are equipped with one or more antennas.
  • MIMO communications may employ multipath signal propagation to increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers, which may be referred to as spatial multiplexing.
  • the multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the 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 used for channel measurement and reporting.
  • MIMO techniques include single-user MIMO (SU-MIMO) where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) where multiple spatial layers are transmitted to multiple devices.
  • SU-MIMO single-user MIMO
  • MU-MIMO multiple-user MIMO
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at 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 receive beam) along a spatial path between the transmitting device and the receiving device.
  • Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a 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 may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
  • a base station 105 may use multiple antennas or antenna arrays to conduct beamforming operations for directional communications with a UE 115. For instance, some signals (e.g. synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a base station 105 multiple times in different directions, which may include a signal being transmitted according to different beamforming weight sets associated with different directions of transmission. Transmissions in different beam directions may be used to identify (e.g., by the base station 105 or a receiving device, such as a UE 115) a beam direction for subsequent transmission and/or reception by the base station 105.
  • some signals e.g. synchronization signals, reference signals, beam selection signals, or other control signals
  • Transmissions in different beam directions may be used to identify (e.g., by the base station 105 or a receiving device, such as a UE 115) a beam direction for subsequent transmission and/or reception by the base station 105.
  • Some signals may be transmitted by a base station 105 in a single beam direction (e.g., a direction associated with the receiving device, such as a UE 115) .
  • the beam direction associated with transmissions along a single beam direction may be determined based at least in in part on a signal that was transmitted in different beam directions.
  • a UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions, and the UE 115 may report to the base station 105 an indication of the signal it received with a highest signal quality, or an otherwise acceptable signal quality.
  • a UE 115 may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) , or transmitting a signal in a single direction (e.g., for transmitting data to a receiving device) .
  • a receiving device may try multiple receive beams when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive beams or receive directions.
  • a receiving device may use a single receive beam to receive along a single beam direction (e.g., when receiving a data signal) .
  • the single receive beam may be aligned in a beam direction determined based at least in part on listening according to different receive beam directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio, or otherwise acceptable signal quality based at least in part on listening according to multiple beam directions) .
  • the antennas of a base station 105 or UE 115 may be located within one or more antenna arrays, which may support MIMO operations, or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations.
  • a base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • wireless communications system 100 may be a packet-based network that operate according to a layered protocol stack.
  • PDCP Packet Data Convergence Protocol
  • a Radio Link Control (RLC) layer may in some cases perform packet segmentation and reassembly to communicate over logical channels.
  • RLC Radio Link Control
  • a Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer may also use hybrid automatic repeat request (HARQ) to provide retransmission at the MAC layer to improve link efficiency.
  • HARQ hybrid automatic repeat request
  • the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or core network 130 supporting radio bearers for user plane data.
  • RRC Radio Resource Control
  • PHY Physical
  • UEs 115 and base stations 105 may support retransmissions of data to increase the likelihood that data is received successfully.
  • HARQ feedback is one technique of increasing the likelihood that data is received correctly over a communication link 125.
  • HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) .
  • FEC forward error correction
  • ARQ automatic repeat request
  • HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., signal-to-noise conditions) .
  • a wireless device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
  • the radio frames may be identified by a system frame number (SFN) ranging from 0 to 1023.
  • SFN system frame number
  • Each frame may include 10 subframes numbered from 0 to 9, and each subframe may have a duration of 1 ms.
  • a subframe may be further divided into 2 slots each having a duration of 0.5 ms, and each slot may contain 6 or 7 modulation symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . Excluding the cyclic prefix, each symbol period may contain 2048 sampling periods.
  • a subframe may be the smallest scheduling unit of the wireless communications system 100, and may be referred to as a transmission time interval (TTI) .
  • TTI transmission time interval
  • a smallest scheduling unit of the wireless communications system 100 may be shorter than a subframe or may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) or in selected component carriers using sTTIs) .
  • a slot may further be divided into multiple mini-slots containing one or more symbols.
  • a symbol of a mini-slot or a mini-slot may be the smallest unit of scheduling.
  • Each symbol may vary in duration depending on the subcarrier spacing or frequency band of operation, for example.
  • some wireless communications systems may implement slot aggregation in which multiple slots or mini-slots are aggregated together and used for communication between a UE 115 and a base station 105.
  • carrier refers to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communications over a communication link 125.
  • a carrier of a communication link 125 may include a portion of a radio frequency spectrum band that is operated according to physical layer channels 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 pre-defined frequency channel (e.g., an E-UTRA absolute radio frequency channel number (EARFCN) ) , and may be positioned according to a channel raster for discovery by UEs 115.
  • E-UTRA absolute radio frequency channel number E-UTRA absolute radio frequency channel number
  • Carriers may be downlink or uplink (e.g., in an FDD mode) , or be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
  • signal waveforms transmitted over a carrier may be made up of multiple sub-carriers (e.g., using multi-carrier modulation (MCM) techniques such as OFDM or DFT-s-OFDM) .
  • MCM multi-carrier modulation
  • the organizational structure of the carriers may be different for different radio access technologies (e.g., LTE, LTE-A, LTE-A Pro, NR, etc. ) .
  • communications over a carrier may be organized according to TTIs or slots, each of which may include user data as well as control information or signaling to support decoding the user data.
  • a carrier may also include dedicated acquisition signaling (e.g., synchronization signals or system information, etc. ) and control signaling that coordinates operation for the carrier.
  • acquisition signaling e.g., synchronization signals or system information, etc.
  • control signaling that coordinates operation for the carrier.
  • a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers.
  • Physical channels may be multiplexed on a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.
  • control information transmitted in a physical control channel may be distributed between different control regions in a cascaded manner (e.g., between a common control region or common search space and one or more UE-specific control regions or UE-specific search spaces) .
  • a carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100.
  • the carrier bandwidth may be one of a number of predetermined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz) .
  • each served UE 115 may be configured for operating over portions or all of the carrier bandwidth.
  • some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a predefined portion or range (e.g., set of subcarriers or RBs) within a carrier (e.g., “in-band” deployment of a narrowband protocol type) .
  • a narrowband protocol type that is associated with a predefined portion or range (e.g., set of subcarriers or RBs) within a carrier (e.g., “in-band” deployment of a narrowband protocol type) .
  • a resource element may consist of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related.
  • the number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme) .
  • the more resource elements that a UE 115 receives and the higher the order of the modulation scheme the higher the data rate may be for the UE 115.
  • a wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers) , and the use of multiple spatial layers may further increase the data rate for communications with a UE 115.
  • a spatial resource e.g., spatial layers
  • Devices of the wireless communications system 100 may have a hardware configuration that supports communications over a particular carrier bandwidth, or may be configurable to support communications over one of a set of carrier bandwidths.
  • the wireless communications system 100 may include base stations 105 and/or UEs that can support simultaneous communications via carriers associated with more than one different carrier bandwidth.
  • Wireless communications system 100 may support communication with a UE 115 on multiple cells or carriers, a feature which may be referred to as carrier aggregation (CA) or multi-carrier operation.
  • a UE 115 may be configured with multiple downlink CCs and one or more uplink CCs according to a carrier aggregation configuration.
  • Carrier aggregation may be used with both FDD and TDD component carriers.
  • wireless communications system 100 may utilize enhanced component carriers (eCCs) .
  • eCC may be characterized by one or more features including wider carrier or frequency channel bandwidth, shorter symbol duration, shorter TTI duration, or modified control channel configuration.
  • an eCC may be associated with a carrier aggregation configuration or a dual connectivity configuration (e.g., when multiple serving cells have a suboptimal or non-ideal backhaul link) .
  • An eCC may also be configured for use in unlicensed spectrum or shared spectrum (e.g., where more than one operator is allowed to use the spectrum) .
  • An eCC characterized by wide carrier bandwidth may include one or more segments that may be utilized by UEs 115 that are not capable of monitoring the whole carrier bandwidth or are otherwise configured to use a limited carrier bandwidth (e.g., to conserve power) .
  • an eCC may utilize a different symbol duration than other CCs, which may include use of a reduced symbol duration as compared with symbol durations of the other CCs.
  • a shorter symbol duration may be associated with increased spacing between adjacent subcarriers.
  • a device such as a UE 115 or base station 105, utilizing eCCs may transmit wideband signals (e.g., according to frequency channel or carrier bandwidths of 20, 40, 60, 80 MHz, etc. ) at reduced symbol durations (e.g., 16.67 microseconds) .
  • a TTI in eCC may consist of one or multiple symbol periods. In some cases, the TTI duration (that is, the number of symbol periods in a TTI) may be variable.
  • Wireless communications systems such as an NR system may utilize any combination of licensed, shared, and unlicensed spectrum bands, among others.
  • the flexibility of eCC symbol duration and subcarrier spacing may allow for the use of eCC across multiple spectrums.
  • NR shared spectrum may increase spectrum utilization and spectral efficiency, specifically through dynamic vertical (e.g., across frequency) and horizontal (e.g., across time) sharing of resources.
  • a base station 105 may transmit an indication of a default DRX value to be used by a UE 115 for a DRX mode.
  • the base station 105 may receive a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • the base station 105 may transmit one or more paging messages to the UE 115 operating in the DRX mode according to the UE-specific DRX value.
  • a UE 115 may receive an indication of a default DRX value to be used for a DRX mode.
  • the UE 115 may transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • the UE 115 may operating in the DRX mode in accordance with the UE-specific DRX value.
  • FIG. 2 illustrates an example of a timing diagram 200 that supports UE specified DRX value in accordance with various aspects of the present disclosure.
  • timing diagram 200 may implement aspects of wireless communication system 100. Aspects of timing diagram 200 may be implemented by a UE and/or base station, which may be examples of the corresponding device described herein. Broadly, timing diagram 200 illustrates one example of a system where the UE determines which DRX value is implemented during DRX mode operations.
  • timing diagram 200 illustrates a timing diagram associated with a default DRX value, a UE-specific DRX value, and an ongoing communication timing diagram.
  • the default DRX value may be a network configured DRX value that is transmitted by base stations of the network in broadcast messages.
  • the broadcast messages may include any combination of master information block (MIB) messages, system information block (SIB) messages, synchronization signals such as primary synchronization signal (PSS) and/or secondary synchronization signal (SSS) , or any other message transmitted by the network.
  • the default DRX value may be indicated in a SI field.
  • the default DRX value timing diagram may be associated with a DRX mode that include transitions to an on state 205 where a UE monitors for paging messages from the base station, followed by idle state 210 where the UE shuts down various circuitry, functions, and/or processes to conserve power.
  • the DRX mode of operation may have an associated default DRX value 215 (also referred to as a DRX cycle) associated with how often the UE transitions to the on state 205.
  • the default DRX value 215 may be measured between subsequent instances of the on state 205 (e.g., between on state 205-a and 205-b) or between subsequent instances of the idle state 210 (e.g., between idle state 210-a and 210-b) .
  • the default DRX value 215 is configured by the network and indicated in the SI of the broadcast messages.
  • Each instance of the UE transitioning between an idle state 210 to an on state 205 and then back to the idle state 210 may have an associated cost in terms of power usage/available power for the UE.
  • the UE-specific DRX value timing diagram may be associated with a DRX mode that include transitions to an on state 220 where a UE monitors for paging messages from the base station, followed by idle state 225 where the UE shuts down various circuitry, functions, and/or processes to conserve power.
  • the DRX mode of operation may have an associated UE-specific DRX value 230 associated with how often the UE transitions to the on state 220.
  • the UE-specific DRX value 230 may be measured between subsequent instances of the on state 220 (e.g., between on state 220-a and 220-b) or between subsequent instances of the idle state 225 (not shown) .
  • the UE-specific DRX value 230 is configured by the UE and indicated in the network in a message, such as an attach request message, a tracking area update (TAU) message, and the like.
  • TAU tracking area update
  • the UE-specific DRX value 230 is longer than the default DRX value 215. That is and as illustrated in timing diagram 200, there may be fewer instances (for a certain time period) of the UE transitioning between the one state and the idle state for UE-specific DRX value 230 than for default DRX value 215. As discussed, there is a power cost associated with each transition and, therefore, the UE-specific DRX value 230 may use less UE power than the default DRX value 215, e.g., the UE-specific DRX value 230 may conserve the available power of the UE.
  • the UE may select and transmit the indication of the UE-specific DRX value 230 based on the UE-specific DRX value 230 being longer than the default DRX value 215.
  • the UE and network may use the UE-specific DRX value 230 for DRX mode operations of the UE. For example, the UE may enter the DRX mode of operations according to the UE-specific DRX value 230 rather than the default DRX value 215. Accordingly, the network may transmit (via a base station) paging signals to the UE using a schedule selected according to the UE-specific DRX value 230.
  • the UE-specific DRX value 230 may be used for the UE DRX mode of operations based on the fact that the UE transmitted the indication of the UE-specific DRX value 230. In some aspects, the UE-specific DRX value 230 may be used for the UE DRX mode of operations based on the UE-specific DRX value 230 being longer than the default DRX value 215.
  • the UE may transmit the indication of the UE-specific DRX value 230 based on power considerations.
  • the UE-specific DRX value 230 generally uses less power due to the reduced number of on state/idle state transitions. Accordingly, the UE may determine to conserve power and therefore transmit the indication of the UE-specific DRX value 230. In some aspects, this may be triggered by the available power level of the UE being below a threshold, or otherwise not satisfying the threshold. In other aspects, this may be triggered as an automatic consideration of the current power level of the UE. In some aspects, the UE may select the duration of the UE-specific DRX value 230 based on power level/conservation considerations.
  • the UE and network may be configured to adopt the UE-specific DRX value 230 for the UE DRX mode of operations according to the following protocols: the value T may refer to the DRX cycle of the UE. T may be determined UE specific-DRX value (e.g., if allocated by upper layers of the UE) . If the UE-specific DRX value 230 is not configured, the default DRX value broadcast in SI may be applied.
  • the UE may include the UE-specific DRX value (or parameter) in the DRX parameter information element (IE) in the attach request message, e.g., during attach procedure initiation. If the UE-specific DRX value 230 (or parameter) was included in the DRX parameter IE in the attach request message, the MME may replace any stored UE-specific DRX value with the received parameter and use it (the UE-specific DRX value 230) for the downlink transfer of signaling and user data, e.g., when attach accepted by the network.
  • IE DRX parameter information element
  • the UE may be configured for DSDS operations where two SUBs (e.g., different subscribers associated with different SIM cards) .
  • the UE-specific DRX value 230 may be selected and indicated to the network based on the dual-SUB operations where the two SUBs share a communication chain.
  • SUB 1 may be in an idle state and operate in a DRX mode whereas SUB2 may be operating in an active mode.
  • the active operational mode of SUB 2 is illustrated in the ongoing communications timing diagram where the SUB2 has wireless communications 235.
  • the wireless communications 235 may have an associated latency requirement, priority level, redundancy requirement, etc.
  • the UE may select the UE-specific DRX value 230 to use for the DRX mode of operations for SUB1 due to UE-specific DRX value 230 having a longer duration than default DRX value 215.
  • UE-specific DRX value 230 having a longer duration than default DRX value 215.
  • timing diagram 200 when SUB1 and SUB2 share a common communication chain there is a disruption for the ongoing communications 235 during each period 240 where the communication chain must tune away from SUB2 and to SUB1 to monitor for the paging messages during the on duration.
  • each disruption period 240 may take more time than the corresponding on duration (e.g., due to tuning procedures, processing changes, etc. ) the interference to ongoing communications 240 would be even more severe if the UE and network were to adopt the default DRX value 215 rather than the UE-specific DRX value 230.
  • the UE may determine that the duration of the default DRX value 215 does not satisfy a threshold (e.g., too short, which may interfere with ongoing communications 240 and/or based on an available power level of the UE) .
  • the UE may transmit the message indicating the UE-specific DRX value 230 based on the default DRX value 215 being below the threshold
  • the UE may determine that a SUB2 is in an active operational mode associated with ongoing wireless communications (e.g., ongoing communications 235) that are associated with a latency requirement.
  • the UE may determine that SUB1 is in an idle mode associated with the DRX mode and therefore select the duration of the UE-specific DRX value 230 based on the latency requirement of the ongoing wireless communications.
  • FIG. 3 illustrates an example of a process 300 that supports UE specified DRX value in accordance with various aspects of the present disclosure.
  • process 300 may implement aspects of wireless communication system 100 and/or timing diagram 200. Aspects of process 300 may be implemented by a UE and/or a base station, which may be examples of the corresponding device described herein.
  • base station 305 may transmit (and UE 310 may receive) an indication of a default DRX value to be used for a DRX mode.
  • the indication may be transmitted in a SI of a broadcast message, such as an MIB message, SIB message, PSS, SSS, and the like.
  • UE 310 may transmit (and base station 305 may receive) a message indicating a UE-specific DRX value to be used for the DRX mode.
  • the UE-specific DRX value may have a duration that is longer than a duration of the default DRX value.
  • the UE 310 may transmit a tracking area update message, an attach request message, and the like, to convey the UE-specific DRX value indication.
  • the UE 310 may operate in a DRX mode in accordance with the UE-specific DRX value.
  • this may include the UE 310 and network (e.g., base station 305) adopting the UE-specific DRX value instead of the default DRX value.
  • this adoption may be due to the UE-specific DRX value being longer than the default DRX value.
  • this adoption may be due to the UE 310 transmitting the message indicating the UE-specific DRX value.
  • the UE 310 may determine that it is operating in a dual-subscriber mode with one communication chain. Accordingly, the UE 310 may select the duration of the UE-specific DRX value based at least in part on the determination.
  • the UE 310 determining that it is operating in the dual-SUB mode may include UE 310 determining that a first SUB is in an active operational mode associated with ongoing wireless communications, the ongoing wireless communications being associated with a latency requirement and that a second SUB is in an idle mode associated with the DRX mode. Accordingly, UE 310 may select the duration of the UE-specific DRX value based on the latency requirement of the ongoing wireless communications.
  • operating in the DRX mode may include UE 310 tuning away from the first SUB that is in an active operational mode and to a second SUB to perform DRX operations.
  • the UE 310 may then tune away from the second SUB to the first SUB based at least in part on a result of the DRX operations.
  • the UE operating in the DRX mode in accordance with the UE-specific DRX value may include base station 305 transmitting (and UE 310 receiving) paging messages according to the UE-specific DRX value.
  • the base station 305 may transmit paging messages during the corresponding on state of the UE-specific DRX value.
  • FIG. 4 illustrates an example of a flowchart 400 that supports UE specified DRX value in accordance with various aspects of the present disclosure.
  • flowchart 400 may be implemented by a UE and/or a base station, which may be examples of the corresponding device described herein.
  • the UE may determine that it is operating in a dual-SUB mode where the SUBs share a common communication chain.
  • the UE may be configured as a DSDS device having two SIM cards and each SIM card is associated with a different SUB.
  • the UE may receive a default DRX value indication from a network (e.g., via a base station) .
  • the default DRX value indication may be received in a SI of a broadcast message transmitted from the base station.
  • the UE may determine whether there is an active SUB. For example, the UE may determine whether a first SUB is in an active operational mode with ongoing wireless communications.
  • the ongoing wireless communications may have a latency requirement, priority level, reliability requirement, etc., that must satisfy a threshold.
  • the UE may implement a DRX mode using the default DRX value. For example, the UE may enter the DRX mode for one or both SUBs using the default DRX value that is broadcast in the SI from the base station.
  • the UE may determine whether the default DRX value is too short. For example, this may include the UE determining whether the interfering periods associated with the inactive SUB would interfere with the ongoing wireless communications of the active SUB more than a threshold. For example, the default DRX value might be considered too short when the frequency of on states (and their associated tuning times) would interfere with the ongoing wireless communications such that the latency requirement cannot be met, etc. If the default DRX value is not too short, the UE may return to 420 and operate in the DRX mode using the default DRX value.
  • the UE may transmit a message indicating a UE-specific DRX value.
  • the UE may transmit the UE-specific value indication in an attach request message, in a tracking area update message, and the like.
  • the UE-specific DRX value may have a duration that is longer than the duration of the default DRX value.
  • the UE may operate in the DRX mode in accordance with the UE-specific DRX value. That is, the UE and network may adopt the UE-specific DRX value rather than the default DRX value.
  • Operating in the DRX mode in accordance with the UE-specific DRX value may include the UE receiving paging messages during the on state of the UE-specific DRX value.
  • FIG. 5 shows a block diagram 500 of a wireless device 505 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • Wireless device 505 may be an example of aspects of a UE 115 as described herein.
  • Wireless device 505 may include receiver 510, UE communications manager 515, and transmitter 520.
  • Wireless device 505 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • Receiver 510 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 UE specified DRX value, etc. ) . Information may be passed on to other components of the device.
  • the receiver 510 may be an example of aspects of the transceiver 835 described with reference to FIG. 8.
  • the receiver 510 may utilize a single antenna or a set of antennas.
  • UE communications manager 515 may be an example of aspects of the UE communications manager 815 described with reference to FIG. 8.
  • UE communications manager 515 and/or at least some of its various sub-components 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 of the UE communications manager 515 and/or at least some of its various sub-components may be executed by a general-purpose processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , an 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.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • the UE communications manager 515 and/or at least some of its various sub-components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices.
  • UE communications manager 515 and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • UE communications manager 515 and/or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to an I/O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • UE communications manager 515 may receive an indication of a default DRX value to be used for a DRX mode, transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and operate in the DRX mode in accordance with the UE-specific DRX value.
  • Transmitter 520 may transmit signals generated by other components of the device.
  • the transmitter 520 may be collocated with a receiver 510 in a transceiver module.
  • the transmitter 520 may be an example of aspects of the transceiver 835 described with reference to FIG. 8.
  • the transmitter 520 may utilize a single antenna or a set of antennas.
  • FIG. 6 shows a block diagram 600 of a wireless device 605 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • Wireless device 605 may be an example of aspects of a wireless device 505 or a UE 115 as described with reference to FIG. 5.
  • Wireless device 605 may include receiver 610, UE communications manager 615, and transmitter 620.
  • Wireless device 605 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • 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 UE specified DRX value, etc. ) . Information may be passed on to other components of the device.
  • the receiver 610 may be an example of aspects of the transceiver 835 described with reference to FIG. 8.
  • the receiver 610 may utilize a single antenna or a set of antennas.
  • UE communications manager 615 may be an example of aspects of the UE communications manager 815 described with reference to FIG. 8.
  • UE communications manager 615 may also include default DRX value manager 625, UE-specific DRX value manager 630, and DRX mode manager 635.
  • Default DRX value manager 625 may receive an indication of a default DRX value to be used for a DRX mode.
  • receiving the indication of the default DRX value includes: receiving a broadcast message carrying SI that indicates the default DRX value.
  • the broadcast message includes one or more of a MIB message, or a SIB message, or a PSS, or a SSS, or a combination thereof.
  • UE-specific DRX value manager 630 may transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • transmitting the message indicating the UE-specific DRX value includes: transmitting at least one of a TAU message or an attach request message to indicate the UE-specific DRX value.
  • DRX mode manager 635 may operate in the DRX mode in accordance with the UE-specific DRX value.
  • Transmitter 620 may transmit signals generated by other components of the device.
  • the transmitter 620 may be collocated with a receiver 610 in a transceiver module.
  • the transmitter 620 may be an example of aspects of the transceiver 835 described with reference to FIG. 8.
  • the transmitter 620 may utilize a single antenna or a set of antennas.
  • FIG. 7 shows a block diagram 700 of a UE communications manager 715 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • the UE communications manager 715 may be an example of aspects of a UE communications manager 515, a UE communications manager 615, or a UE communications manager 815 described with reference to FIGs. 5, 6, and 8.
  • the UE communications manager 715 may include default DRX value manager 720, UE-specific DRX value manager 725, DRX mode manager 730, DRX value selection manager 735, and dual-SUB mode manager 740. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • Default DRX value manager 720 may receive an indication of a default DRX value to be used for a DRX mode.
  • receiving the indication of the default DRX value includes: receiving a broadcast message carrying SI that indicates the default DRX value.
  • the broadcast message includes one or more of a MIB message, or a SIB message, or a PSS, or a SSS, or a combination thereof.
  • UE-specific DRX value manager 725 may transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • transmitting the message indicating the UE-specific DRX value includes: transmitting at least one of a TAU message or an attach request message to indicate the UE-specific DRX value.
  • DRX mode manager 730 may operate in the DRX mode in accordance with the UE-specific DRX value.
  • DRX value selection manager 735 may operate in the DRX mode in accordance with the UE-specific DRX value is based on the UE-specific DRX value being transmitted and determine that the duration of the default DRX value does not satisfy a threshold, where the message is transmitted based on the determining. In some cases, the determining is based on an available power level associated with the UE.
  • Dual-SUB mode manager 740 may determine that the UE is operating in a dual-subscriber mode with one communication chain, select the duration of the UE-specific DRX value based on the determination, determine that a second subscriber is in an idle mode associated with the DRX mode, select the duration of the UE-specific DRX value based on the latency requirement of the ongoing wireless communications, and tune away from the second subscriber to the first subscriber based on a result of the DRX operations.
  • determining that the UE is operating in the dual-subscriber mode includes: determining that a first subscriber is in an active operational mode associated with ongoing wireless communications, the ongoing wireless communications being associated with a latency requirement.
  • operating in the DRX mode includes: tuning away from a first subscriber that is in an active operational mode and to a second subscriber to perform DRX operations.
  • the UE-specific DRX value is a configured value or selected by the UE.
  • FIG. 8 shows a diagram of a system 800 including a device 805 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • Device 805 may be an example of or include the components of wireless device 505, wireless device 605, or a UE 115 as described above, e.g., with reference to FIGs. 5 and 6.
  • Device 805 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including UE communications manager 815, processor 820, memory 825, software 830, transceiver 835, antenna 840, and I/O controller 845. These components may be in electronic communication via one or more buses (e.g., bus 810) .
  • Device 805 may communicate wirelessly with one or more base stations 105.
  • Processor 820 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a central processing unit (CPU) , a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • processor 820 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 820.
  • Processor 820 may be configured to execute computer-readable instructions stored in a memory to perform various functions (e.g., functions or tasks supporting UE specified DRX value) .
  • Memory 825 may include random access memory (RAM) and read only memory (ROM) .
  • the memory 825 may store computer-readable, computer-executable software 830 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 825 may contain, among other things, a basic input/output system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic input/output system
  • Software 830 may include code to implement aspects of the present disclosure, including code to support UE specified DRX value.
  • Software 830 may be stored in a non- transitory computer-readable medium such as system memory or other memory. In some cases, the software 830 may not be directly executable by the processor but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • Transceiver 835 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 835 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 835 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 840. However, in some cases the device may have more than one antenna 840, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • I/O controller 845 may manage input and output signals for device 805. I/O controller 845 may also manage peripherals not integrated into device 805. In some cases, I/O controller 845 may represent a physical connection or port to an external peripheral. In some cases, I/O controller 845 may utilize an operating system such as or another known operating system. In other cases, I/O controller 845 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, I/O controller 845 may be implemented as part of a processor. In some cases, a user may interact with device 805 via I/O controller 845 or via hardware components controlled by I/O controller 845.
  • FIG. 9 shows a block diagram 900 of a wireless device 905 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • Wireless device 905 may be an example of aspects of a base station 105 as described herein.
  • Wireless device 905 may include receiver 910, base station communications manager 915, and transmitter 920.
  • Wireless device 905 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • Receiver 910 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 UE specified DRX value, etc. ) . Information may be passed on to other components of the device.
  • the receiver 910 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the receiver 910 may utilize a single antenna or a set of antennas.
  • Base station communications manager 915 may be an example of aspects of the base station communications manager 1215 described with reference to FIG. 12.
  • Base station communications manager 915 and/or at least some of its various sub-components 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 of the base station communications manager 915 and/or at least some of its various sub-components may be executed by a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • the base station communications manager 915 and/or at least some of its various sub-components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices.
  • base station communications manager 915 and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure. In other examples, base station communications manager 915 and/or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to an I/O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • Base station communications manager 915 may transmit an indication of a default DRX value to be used by a UE for a DRX mode, receive a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value, and transmit one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • Transmitter 920 may transmit signals generated by other components of the device.
  • the transmitter 920 may be collocated with a receiver 910 in a transceiver module.
  • the transmitter 920 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the transmitter 920 may utilize a single antenna or a set of antennas.
  • FIG. 10 shows a block diagram 1000 of a wireless device 1005 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • Wireless device 1005 may be an example of aspects of a wireless device 905 or a base station 105 as described with reference to FIG. 9.
  • Wireless device 1005 may include receiver 1010, base station communications manager 1015, and transmitter 1020.
  • Wireless device 1005 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • 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 UE specified DRX value, etc. ) . Information may be passed on to other components of the device.
  • the receiver 1010 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the receiver 1010 may utilize a single antenna or a set of antennas.
  • Base station communications manager 1015 may be an example of aspects of the base station communications manager 1215 described with reference to FIG. 12.
  • Base station communications manager 1015 may also include default DRX value manager 1025, UE-specific DRX value manager 1030, and DRX mode manager 1035.
  • Default DRX value manager 1025 may transmit an indication of a default DRX value to be used by a UE for a DRX mode.
  • transmitting the indication of the default DRX value includes: transmitting a broadcast message carrying system information (SI) that indicates the default DRX value.
  • SI system information
  • the broadcast message includes one or more of a MIB message, or a SIB message, or a PSS, or a SSS, or a combination thereof.
  • UE-specific DRX value manager 1030 may receive a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • receiving the indication of the UE-specific DRX value includes: receiving at least one of a TAU message or an attach request message that indicates the UE-specific DRX value.
  • DRX mode manager 1035 may transmit one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • Transmitter 1020 may transmit signals generated by other components of the device.
  • the transmitter 1020 may be collocated with a receiver 1010 in a transceiver module.
  • the transmitter 1020 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the transmitter 1020 may utilize a single antenna or a set of antennas.
  • FIG. 11 shows a block diagram 1100 of a base station communications manager 1115 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • the base station communications manager 1115 may be an example of aspects of a base station communications manager 1215 described with reference to FIGs. 9, 10, and 12.
  • the base station communications manager 1115 may include default DRX value manager 1120, UE-specific DRX value manager 1125, DRX mode manager 1130, and paging message manager 1135. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • Default DRX value manager 1120 may transmit an indication of a default DRX value to be used by a UE for a DRX mode.
  • transmitting the indication of the default DRX value includes: transmitting a broadcast message carrying SI that indicates the default DRX value.
  • the broadcast message includes one or more of a MIB message, or a SIB message, or a PSS, or a SSS, or a combination thereof.
  • UE-specific DRX value manager 1125 may receive a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • receiving the indication of the UE-specific DRX value includes: receiving at least one of a TAU message or an attach request message that indicates the UE-specific DRX value.
  • DRX mode manager 1130 may transmit one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • Paging message manager 1135 may transmit the one or more paging messages according to the UE-specific DRX value is based on the UE-specific DRX value being received.
  • FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports UE specified DRX value in accordance with aspects of the present disclosure.
  • Device 1205 may be an example of or include the components of base station 105 as described above, e.g., with reference to FIG. 1.
  • Device 1205 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including base station communications manager 1215, processor 1220, memory 1225, software 1230, transceiver 1235, antenna 1240, network communications manager 1245, and inter-station communications manager 1250. These components may be in electronic communication via one or more buses (e.g., bus 1210) .
  • Device 1205 may communicate wirelessly with one or more UEs 115.
  • Processor 1220 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • processor 1220 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1220.
  • Processor 1220 may be configured to execute computer-readable instructions stored in a memory to perform various functions (e.g., functions or tasks supporting UE specified DRX value) .
  • Memory 1225 may include RAM and ROM.
  • the memory 1225 may store computer-readable, computer-executable software 1230 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 1225 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • Software 1230 may include code to implement aspects of the present disclosure, including code to support UE specified DRX value.
  • Software 1230 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software 1230 may not be directly executable by the processor but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • Transceiver 1235 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1235 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1235 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 1240. However, in some cases the device may have more than one antenna 1240, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • Network communications manager 1245 may manage communications with the core network (e.g., via one or more wired backhaul links) .
  • the network communications manager 1245 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • Inter-station communications manager 1250 may manage communications with other base station 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other base stations 105. For example, the inter-station communications manager 1250 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, inter-station communications manager 1250 may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations 105.
  • FIG. 13 shows a flowchart illustrating a method 1300 for UE specified DRX value in accordance with aspects of the present disclosure.
  • the operations of method 1300 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1300 may be performed by a UE communications manager as described with reference to FIGs. 5 through 8.
  • a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the UE 115 may receive an indication of a default DRX value to be used for a DRX mode.
  • the operations of 1305 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1305 may be performed by a default DRX value manager as described with reference to FIGs. 5 through 8.
  • the UE 115 may transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • the operations of 1310 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1310 may be performed by a UE-specific DRX value manager as described with reference to FIGs. 5 through 8.
  • the UE 115 may operate in the DRX mode in accordance with the UE-specific DRX value.
  • the operations of 1315 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1315 may be performed by a DRX mode manager as described with reference to FIGs. 5 through 8.
  • FIG. 14 shows a flowchart illustrating a method 1400 for UE specified DRX value in accordance with aspects of the present disclosure.
  • the operations of method 1400 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1400 may be performed by a UE communications manager as described with reference to FIGs. 5 through 8.
  • a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the UE 115 may receive an indication of a default DRX value to be used for a DRX mode.
  • the operations of 1405 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1405 may be performed by a default DRX value manager as described with reference to FIGs. 5 through 8.
  • the UE 115 may transmit a message indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • the operations of 1410 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1410 may be performed by a UE-specific DRX value manager as described with reference to FIGs. 5 through 8.
  • the UE 115 may operate in the DRX mode in accordance with the UE-specific DRX value.
  • the operations of 1415 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1415 may be performed by a DRX mode manager as described with reference to FIGs. 5 through 8.
  • the UE 115 may determine that the UE is operating in a dual-subscriber mode with one communication chain.
  • the operations of 1420 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1420 may be performed by a dual-SUB mode manager as described with reference to FIGs. 5 through 8.
  • the UE 115 may select the duration of the UE-specific DRX value based at least in part on the determination.
  • the operations of 1425 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1425 may be performed by a dual-SUB mode manager as described with reference to FIGs. 5 through 8.
  • FIG. 15 shows a flowchart illustrating a method 1500 for UE specified DRX value in accordance with aspects of the present disclosure.
  • the operations of method 1500 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 1500 may be performed by a base station communications manager as described with reference to FIGs. 9 through 12.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may transmit an indication of a default DRX value to be used by a UE for a DRX mode.
  • the operations of 1505 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1505 may be performed by a default DRX value manager as described with reference to FIGs. 9 through 12.
  • the base station 105 may receive a message from the UE indicating a UE-specific DRX value to be used for the DRX mode, the UE-specific DRX value having a duration that is longer than a duration of the default DRX value.
  • the operations of 1510 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1510 may be performed by a UE-specific DRX value manager as described with reference to FIGs. 9 through 12.
  • the base station 105 may transmit one or more paging messages to the UE operating in the DRX mode according to the UE-specific DRX value.
  • the operations of 1515 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1515 may be performed by a DRX mode manager as described with reference to FIGs. 9 through 12.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • a CDMA system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA) , etc.
  • CDMA2000 covers IS-2000, IS-95, and IS-856 standards.
  • IS-2000 Releases may be commonly referred to as CDMA2000 1X, 1X, etc.
  • IS-856 TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD) , etc.
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • a TDMA system may implement a radio technology such as Global System for Mobile Communications (GSM) .
  • GSM Global System for Mobile Communications
  • An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB) , Evolved UTRA (E-UTRA) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, etc.
  • UMB Ultra Mobile Broadband
  • E-UTRA Evolved UTRA
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Institute of Electrical and Electronics Engineers
  • IEEE 802.16 WiMAX
  • IEEE 802.20 Flash-OFDM
  • UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS) .
  • LTE, LTE-A, and LTE-A Pro are releases of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR, and GSM are described in documents from the organization named “3rd Generation Partnership Project” (3GP
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • 3GPP2 3rd Generation Partnership Project 2
  • the techniques described herein may be used for the systems and radio technologies mentioned above as well as other systems and radio technologies. While aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR applications.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 115 with service subscriptions with the network provider.
  • a small cell may be associated with a lower- powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed, etc. ) frequency bands as macro cells.
  • Small cells may include pico cells, femto cells, and micro cells according to various examples.
  • a pico cell for example, may cover a small geographic area and may allow unrestricted access by UEs 115 with service subscriptions with the network provider.
  • a femto cell may also cover a small geographic area (e.g., a home) and may provide restricted access by UEs 115 having an association with the femto cell (e.g., UEs 115 in a closed subscriber group (CSG) , UEs 115 for users in the home, and the like) .
  • 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 multiple (e.g., two, three, four, and the like) cells, and may also support communications using one or multiple component carriers.
  • the wireless communications system 100 or systems described herein may support synchronous or asynchronous operation.
  • the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time.
  • 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 either synchronous or asynchronous operations.
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • PLD programmable logic device
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
  • 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 transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that can be accessed by a general purpose or special purpose computer.
  • non-transitory computer-readable media may comprise random-access memory (RAM) , read-only memory (ROM) , electrically erasable programmable read only memory (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read only memory
  • CD compact disk
  • magnetic disk storage or other magnetic storage devices or any other non-transitory medium
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
  • Disk and disc include 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 lasers. Combinations of the above are also included within the scope of computer-readable media.

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Abstract

L'invention concerne des procédés, des systèmes et des dispositifs de communication sans fil. Une station de base peut transmettre (et un équipement utilisateur (UE) peut recevoir) une indication d'une valeur de réception (DRX) discontinue par défaut devant être utilisée pour un mode DRX. L'UE peut transmettre (et la station de base peut recevoir) un message indiquant une valeur DRX spécifique à un UE devant être utilisée pour le mode DRX. La valeur DRX spécifique à l'UE peut présenter une durée plus longue qu'une durée de la valeur DRX par défaut. L'UE peut fonctionner dans le mode DRX conformément à la valeur DRX spécifique à l'UE. L'invention peut comprendre la transmission par la station de base d'un ou plusieurs messages de radiorecherche à l'UE en fonction de la valeur DRX spécifique à l'UE.
PCT/CN2017/115041 2017-12-07 2017-12-07 Valeur de réception discontinue spécifiée par un équipement utilisateur WO2019109309A1 (fr)

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Cited By (4)

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CN112738760A (zh) * 2019-10-28 2021-04-30 通用汽车环球科技运作有限责任公司 用户控制的车辆连通可用性
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