WO2021068184A1 - Messagerie de demande configurable pour la reprise de communication - Google Patents

Messagerie de demande configurable pour la reprise de communication Download PDF

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Publication number
WO2021068184A1
WO2021068184A1 PCT/CN2019/110547 CN2019110547W WO2021068184A1 WO 2021068184 A1 WO2021068184 A1 WO 2021068184A1 CN 2019110547 W CN2019110547 W CN 2019110547W WO 2021068184 A1 WO2021068184 A1 WO 2021068184A1
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WIPO (PCT)
Prior art keywords
message
request message
bit
resume
communications
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PCT/CN2019/110547
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English (en)
Inventor
Peng Cheng
Huichun LIU
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Qualcomm Incorporated
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Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2019/110547 priority Critical patent/WO2021068184A1/fr
Publication of WO2021068184A1 publication Critical patent/WO2021068184A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections

Definitions

  • the following relates generally to wireless communications, and more specifically to configurable request messaging for communication resume.
  • 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, such as 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 wireless multiple-access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, such as UEs.
  • a UE may be configured to simultaneously connect to and communicate with a network using multiple cells, such as in dual connectivity (DC) configurations.
  • DC dual connectivity
  • the UE may resume communications with one or more of the cells after a period of inactivity. Techniques to more efficiently resume communications between the UE and network are desired.
  • the described techniques relate to improved methods, systems, devices, and apparatuses that support configurable request messaging for communication resume.
  • a user equipment operating in a dual connectivity (DC) configuration with a master node (MN) and a secondary node (SN) to determine to resume communications with the SN or the MN.
  • the UE may receive from the MN a radio resource control (RRC) release message which instructs the UE to enter an inactive state.
  • RRC radio resource control
  • the release message may indicate information to include in a spare bit of the request message, such as a RRC Resume Request message, from the UE.
  • the network may configure how the UE is to implement the spare bit or bits in the RRC Resume Request message.
  • the spare bit may be used to indicate the availability of early measurement results, whether the UE may apply a stored secondary cell group (SCG) configuration of the last serving SN, or whether the network may blindly reconfigure the SCG with the UE’s last serving SCG configuration.
  • SCG secondary cell group
  • the network may configure whether the UE may use the RRC resume request with a shortened radio network temporary identifier (RNTI) , such as 48 bits.
  • RNTI radio network temporary identifier
  • the UE may implement the remaining 16 bits of the total 64 bits in a RNTI to provide index information or information for the spare bit of the RRC Resume Request message, such as one (1) bit per configured SN.
  • the two configurations in the RRC release message, such as the spare bit and shortened RNTI may be stored by the MN in the inactive access stratum (AS) context and may be sent to a base station among other source RRC configurations during the UE context retrieval.
  • AS inactive access stratum
  • the method may include receiving a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, determining, by the UE in the inactive state, to resume communications with the secondary node or the master node, transmitting, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and receiving a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to receive a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, determine, by the UE in the inactive state, to resume communications with the secondary node or the master node, transmit, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and receive a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the apparatus may include means for receiving a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, determining, by the UE in the inactive state, to resume communications with the secondary node or the master node, transmitting, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and receiving a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the code may include instructions executable by a processor to receive a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, determine, by the UE in the inactive state, to resume communications with the secondary node or the master node, transmit, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and receive a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of
  • the type of information includes an availability of the UE to perform early measurements.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, in the at least one bit of the request message, an indication that the UE may be capable of performing early measurements, receiving, in the resume message, an uplink grant for performing early measurements by the UE, and transmitting a resume complete message to the master node after receiving the uplink grant, where the resume complete message includes a report of one or more early measurements performed by the UE.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, in the at least one bit of the request message, an indication that the UE may be incapable of performing early measurements.
  • the type of information includes a capability of the UE to apply a stored secondary cell group configuration.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for validating the stored secondary cell group configuration based on configuration information indicated by the release message, transmitting, in the at least one bit of the request message, an indication that the stored secondary cell group configuration may be valid, and receiving a restore message from the master node indicating the UE to restore the stored secondary cell group configuration.
  • the type of information includes a capability of the UE for blind reconfiguration of a secondary cell group configuration for the UE.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, in the at least one bit of the request message, an indication that blind secondary cell group reconfiguration may be supported by the UE, and receiving a restore message from the master node indicating a secondary cell group configuration for the UE in response to the indication.
  • the type of information includes an index of one or more secondary nodes
  • the release message indicates a request message type and a short radio network temporary identifier for the request message.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for measuring one or more secondary cell group configurations indicated by the release message, and transmitting, in the at least one bit of the request message, an index of at least one secondary node corresponding to one of the one or more secondary cell group configurations based on the measuring.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a restore message from the master node indicating the UE to restore the one of the one or more secondary cell group configurations corresponding to the index of the at least one secondary node.
  • the method may include transmitting a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, receiving, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and transmitting a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to transmit a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, receive, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and transmit a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the apparatus may include means for transmitting a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, receiving, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and transmitting a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the code may include instructions executable by a processor to transmit a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, receive, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and transmit a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the type of information includes an availability of the UE to perform early measurements.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, in the at least one bit of the request message, an indication that the UE may be capable of performing early measurements, transmitting, in the resume message, an uplink grant for performing early measurements by the UE, and receiving a resume complete message from the UE after transmitting the uplink grant, where the resume complete message includes a report of one or more early measurements performed by the UE.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, in the at least one bit of the request message, an indication that the UE may be incapable of performing early measurements.
  • the type of information includes a capability of the UE to apply a stored secondary cell group configuration.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, in the at least one bit of the request message, an indication that the stored secondary cell group configuration may be valid, and transmitting a restore message to the UE instructing the UE to restore the stored secondary cell group configuration.
  • the type of information includes a capability of the UE for blind reconfiguration of a secondary cell group configuration for the UE.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, in the at least one bit of the request message, an indication that blind secondary cell group reconfiguration may be supported by the UE, and transmitting a restore message to the UE indicating a secondary cell group configuration for the UE in response to the indication.
  • the type of information includes an index of one or more secondary nodes
  • the release message indicates a request message type and a short radio network temporary identifier for the request message.
  • Some implementations of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, in the at least one bit of the request message, an index of at least one secondary node corresponding to one of the one or more secondary nodes, and transmitting a restore message to the UE instructing the UE to restore the a secondary cell group configuration corresponding to the index of the at least one secondary node.
  • Figure 1 illustrates an example of a system for wireless communications that supports configurable request messaging for communication resume.
  • Figure 2 illustrates an example of a process flow that supports configurable request messaging for communication resume.
  • Figure 3 illustrates an example of a process flow that supports configurable request messaging for communication resume.
  • Figure 4 illustrates an example of a process flow that supports configurable request messaging for communication resume.
  • Figure 5 illustrates an example of a process flow that supports configurable request messaging for communication resume.
  • Figures 6 and 7 show block diagrams of devices that support configurable request messaging for communication resume.
  • Figure 8 shows a block diagram of a communications manager that supports configurable request messaging for communication resume.
  • Figure 9 shows a diagram of a system including a device that supports configurable request messaging for communication resume.
  • Figures 10 and 11 show block diagrams of devices that support configurable request messaging for communication resume.
  • Figure 12 shows a block diagram of a communications manager that supports configurable request messaging for communication resume.
  • Figure 13 shows a diagram of a system including a device that supports configurable request messaging for communication resume.
  • Figures 14 and 15 show flowcharts illustrating methods that support configurable request messaging for communication resume.
  • the following description is directed to certain implementations for the purposes of describing the innovative aspects of this disclosure.
  • the teachings herein can be applied in a multitude of different ways.
  • the described implementations may be implemented in any device, system or network that is capable of transmitting and receiving RF signals according to any of the IEEE 16.11 standards, or any of the IEEE 802.11 standards, the standard, code division multiple access (CDMA) , frequency division multiple access (FDMA) , time division multiple access (TDMA) , Global System for Mobile communications (GSM) , GSM/General Packet Radio Service (GPRS) , Enhanced Data GSM Environment (EDGE) , Terrestrial Trunked Radio (TETRA) , Wideband-CDMA (W-CDMA) , Evolution Data Optimized (EV-DO) , 1xEV-DO, EV-DO Rev A, EV-DO Rev B, High Speed Packet Access (HSPA) , High Speed Downlink Packet Access (HSDPA) , High
  • a user equipment may communicate with a network using dual connectivity (DC) .
  • DC dual connectivity
  • the UE may simultaneously communicate with different base stations, where a first base station may provide a first cell and be referred to as a master node (MN) .
  • MN master node
  • SN secondary node
  • the first and second cells may each be associated with a same or different radio access technology (RAT) .
  • RAT radio access technology
  • various DC deployments may be referred to as evolved universal terrestrial radio access (E-UTRA) new radio (NR) -dual connectivity (EN-DC) , NR E-UTRA-DC (NE-DC) , NR NR-DC, Long Term Evolution (LTE) LTE-DC, or may include other types of multi-radio access technology-dual connectivity (MR-DC) deployments based on the RAT implemented by each cell.
  • E-UTRA evolved universal terrestrial radio access
  • NR E-UTRA-DC NR E-UTRA-DC
  • NR NR-DC Long Term Evolution
  • MR-DC multi-radio access technology-dual connectivity
  • the different cells a UE communicates with for DC may use the same or different radio frequency (RF) spectrum bands.
  • RF radio frequency
  • NR may support different sizes of a radio resource control (RRC) resume request message, such as a shortened radio network temporary identifier (RNTI) of 48 bits or a full RNTI of 64 bits.
  • RRC radio resource control
  • RNTI shortened radio network temporary identifier
  • DCCA Downlink clear channel assessment
  • WI work items
  • a UE in an inactive communication state may report early measurements in an RRC resume complete message to the MN.
  • an RRC resume request message there may be a spare bit available.
  • the spare bit may not provide the MN of the UE indication of availability of early measurement results.
  • the network may blindly request the UE to report early measurements and the scheduled radio resource may not be implemented if the UE does not have available early measurements.
  • the UE may receive from the MN a release message which instructs the UE to enter an inactive state.
  • the release message may indicate information to include in the spare bit of the request message, such as a RRC Resume Request message, from the UE.
  • the MN may send an RRC release message to the UE.
  • the network may configure how the UE is to implement the spare bit or bits in the RRC Resume Request message.
  • the spare bit may be used to indicate the availability of early measurement results, whether the UE may apply a stored secondary cell group (SCG) configuration of the last serving SN, or whether the network may blindly reconfigure the SCG with the UE’s last serving SCG configuration.
  • SCG stored secondary cell group
  • the network may configure whether the UE may use the RRC Resume Request with a shortened radio network temporary identifier (RNTI) , such as 48bits.
  • RNTI radio network temporary identifier
  • the UE may implement the remaining 16 bits of the total 64bits in a RNTI to provide index information or information for the spare bit of the RRC Resume Request, such as one (1) bit per configured SN.
  • the two configurations in the RRC release message, such as the spare bit and shortened RNTI may be stored by the MN in the inactive access stratum (AS) context and may be sent to a base station among other source RRC configurations during the UE context retrieval.
  • AS inactive access stratum
  • unused or spare bits may be utilized by the network or a UE to convey additional information within messages such as RRC messages related to a connection resume procedure.
  • a UE may implement techniques to provide additional information to the network used one or more spare bits, which may result in more efficient use of system resources.
  • aspects of the disclosure are initially described in the context of a wireless communications system. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to configurable request messaging for communication resume.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports configurable request messaging for communication resume.
  • 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
  • NR New Radio
  • wireless communications system 100 may support enhanced broadband communications, ultra-reliable (such as mission critical) communications, low latency communications, or communications with low-cost and low-complexity devices.
  • ultra-reliable such as 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 NodeB 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 (such as 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 also may be called forward link transmissions while uplink transmissions also may be called reverse link transmissions.
  • the geographic coverage area 110 for a base station 105 may be divided into sectors making up 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 (such as over a carrier) , and may be associated with an identifier for distinguishing neighboring cells (such as 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 (such as 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 (such as 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 also may 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” also may be referred to as a unit, a station, a terminal, or a client.
  • a UE 115 also may 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 also may 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
  • Some UEs 115 may be low cost or low complexity devices, and may provide for automated communication between machines (such as 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 (such as a mode that supports one-way communication via transmission or reception, but not transmission and reception simultaneously) . In some implementations 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 (such as according to narrowband communications) . In some implementations, UEs 115 may be designed to support critical functions (such as mission critical functions) , and a wireless communications system 100 may be configured to provide ultra-reliable communications for these functions.
  • critical functions such as mission critical functions
  • a UE 115 also may be able to communicate directly with other UEs 115 (such as 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 station 105
  • Base stations 105 may communicate with the core network 130 and with one another.
  • base stations 105 may interface with the core network 130 through backhaul links 132 (such as via an S1, N2, N3, or another interface) .
  • Base stations 105 may communicate with one another over backhaul links 134 (such as via an X2, Xn, or other interface) either directly (such as directly between base stations 105) or indirectly (such as via core network 130) .
  • 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 (such as 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) Streaming Service.
  • 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 (such as radio heads and access network controllers) or consolidated into a single network device (such as a base station 105) .
  • Wireless communications system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (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 (such as 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 also may 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 may be capable of tolerating interference from other users.
  • ISM bands 5 GHz industrial, scientific, and medical bands
  • Wireless communications system 100 also may operate in an extremely high frequency (EHF) region of the spectrum (such as 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 implementations, 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 carrier aggregation configuration in conjunction with component carriers operating in a licensed band (such as 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 (such as a base station 105) and a receiving device (such as a UE 115) , where the transmitting device is equipped with multiple antennas and the receiving device is 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.
  • 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 (such as 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 also may 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 (such as a base station 105 or a UE 115) to shape or steer an antenna beam (such as 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 (such as 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 (such as 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 (such as 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 (such as 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 (such as for identifying a beam direction for subsequent transmission or reception by the UE 115) , or transmitting a signal in a single direction (such as 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. For example, 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 (such as 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 (such as 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 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 also may 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
  • transport channels may be mapped to physical channels.
  • 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 (such as using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (such as automatic repeat request (ARQ) ) .
  • FEC forward error correction
  • ARQ automatic repeat request
  • HARQ may improve throughput at the MAC layer in poor radio conditions (such as 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 (such as 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 (such as 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 (such as an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN) ) , and may be positioned according to a channel raster for discovery by UEs 115.
  • E-UTRA evolved universal mobile telecommunication system terrestrial radio access
  • E-UTRA absolute radio frequency channel number
  • Carriers may be downlink or uplink (such as in an FDD mode) , or be configured to carry downlink and uplink communications (such as in a TDD mode) .
  • signal waveforms transmitted over a carrier may be made up of multiple sub-carriers (such as using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) .
  • MCM multi-carrier modulation
  • OFDM orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform spread OFDM
  • the organizational structure of the carriers may be different for different radio access technologies (such as LTE, LTE-A, LTE-A Pro, NR) .
  • 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 also may include dedicated acquisition signaling (such as synchronization signals or system information, etc. ) and control signaling that coordinates operation for the carrier.
  • acquisition signaling such as synchronization signals or system information, etc.
  • control signaling that coordinates operation for the carrier.
  • a carrier also may 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 (such as 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 implementations 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 (such as 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 (such as set of subcarriers or RBs) within a carrier (such as “in-band” deployment of a narrowband protocol type) .
  • a resource element may consist of one symbol period (such as 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 (such as 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 (such as spatial layers) , and the use of multiple spatial layers may further increase the data rate for communications with a UE 115.
  • 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 115 that 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 or multi-carrier operation.
  • a UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers 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 (such as when multiple serving cells have a suboptimal or non-ideal backhaul link) .
  • An eCC also may be configured for use in unlicensed spectrum or shared spectrum (such as 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 (such as to conserve power) .
  • an eCC may utilize a different symbol duration than other component carriers, which may include use of a reduced symbol duration as compared with symbol durations of the other component carriers.
  • 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 (such as according to frequency channel or carrier bandwidths of 20, 40, 60, 80 MHz, etc. ) at reduced symbol durations (such as 16.67 microseconds) .
  • a TTI in eCC may consist of one or multiple symbol periods. In some implementations, the TTI duration (that is, the number of symbol periods in a TTI) may be variable.
  • Wireless communications system 100 may be an NR system that 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 (such as across the frequency domain) and horizontal (such as across the time domain) sharing of resources.
  • SCG configuration latency may be reduced through blind SCG configuration with UE assistance information.
  • Blind SCG configuration may include the UE applying a stored UE context SCG, such as a high layer and low layer configuration of last serving SN.
  • Blind SCG configuration also may include the network blindly reconfiguring the SCG in a RRC Resume message or in an RRC Reconfiguration message following the RRC Resume message.
  • the UE assistance information may include whether the UE can apply a stored SCG configuration of the last serving SN or whether the network may blindly reconfigure SCG with the UE’s last serving SCG configuration.
  • the MN may store the context of the SN, such as the SCG lower layer configuration, so that the MN may simultaneously send the RRC Resume message to the UE and send the SN activation request message to the SN.
  • the UE may not release the secondary cell (SCell) configuration upon the initiation of the resume procedure.
  • the RRC resume message may include the master cell group (MSG) SCell configuration for delta signaling.
  • the UE may release the MCG SCells if the MCG SCell does not contain an indication to restore, or resume, the MCG SCells.
  • the UE may not release the SCG configuration upon the initiation of the resume procedure.
  • the RRC resume message may include the SCG configuration for delta signaling. The UE may release the SCG if the SCG does not contain an indication to restore, or resume, the SCG.
  • the UE may receive from the MN a release message which instructs the UE to enter an inactive state.
  • the release message may indicate information to include in a spare bit of a radio resource control (RRC) Resume Request message, from the UE.
  • RRC radio resource control
  • the MN may send an RRC release message to the UE.
  • the network may configure how the UE is to implement the spare bit in the RRC Resume Request message.
  • FIG. 2 illustrates an example of a process flow 200 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the process flow 200 may implement aspects of wireless communications systems 100.
  • the process flow 200 may include a UE 115-a, a new MN 205, and a last serving MN 210.
  • UE 115-a may be an example of a UE 115 as described above with reference to Figures 1.
  • New MN 205 may be an example of a base station 105, MN, MCG, PCell, etc., as described above with reference to Figure 1.
  • last serving MN 210 may be an example of a base station 105, SN, SCG, SCell, Primary SCell (PSCell) , etc., as described above with reference to Figures 1.
  • new MN 205 may operate in a first RAT
  • last serving 210 may operate in a second RAT, which may be different or the same as the first RAT, indicating a MR-DC configuration for communications between UE 115-a, last serving MN 610, and new MN 205.
  • the process flow 200 may include signaling between UE 115-a, new MN 205, and last serving 210 for an early measurement reporting scheme when UE 115-a is initially in an inactive communication state.
  • last serving MN 210 may transmit an RRC release message, where UE 115-a may obtain a measurement configuration of potential SCell frequencies in the RRC release message.
  • the network may indicate to UE 115-a in an information element (IE) how to implement the spare bit or bits in the RRC Resume Request of Message3 (Msg3) .
  • the spare bit may be used to indicate the availability of early measurement results, whether UE 115-a can apply stored SCG configuration of last serving MN, or blind configuration.
  • Blind configuration may include UE 115-a applying a previously stored context for the SCG, such as including higher-layer and lower-layer configurations of a last serving MN of the DC scheme.
  • the blind configuration may include the network blindly reconfiguring the SCG and transmitting this indication in a resume communications message, such as RRC resume message, to UE 115-a.
  • the IE may be stored by last serving MN 210 in an inactive access stratum (AS) context of UE 115-a.
  • the IE may be transmitted to a base station, such as a target base station, among other source RRC configurations during UE 115-a context retrieval.
  • UE 115-a may enter the inactive communication state, dropping any lower-layer SCG configurations for last serving MN 210.
  • the measurement configuration of potential SCell frequencies may enable UE 115-a to perform L3 measurements of the different SCell frequencies while in the inactive communication state after receiving the RRC release message.
  • UE 115-a may transition from the inactive communication state to a connected communication state. As such, UE 115-a may initiate a RACH procedure with its new MN 205 through a Message1 (Msg1) of the RACH procedure, including a PRACH preamble. Subsequently, at 225, new MN 205 may transmit a Message2 (Msg2) of the RACH procedure, including a RAR.
  • Msg1 Message1
  • RAR Message2
  • UE 115-a when transmitting a Msg3 of the RACH procedure to request to resume an RRC connection with last serving MN 605, UE 115-a also may indicate an availability of early measurement based on the L3 measurements performed for the different SCell frequencies while in the inactive communication state. For example, UE 115-a may include a one (1) bit indication in the Msg3 for the availability of early measurement results.
  • new MN 205 may transmit to last serving MN 210 a context retrieval request for UE 115-a.
  • last serving MN 210 may respond and transmit to new MN 205 a context retrieval response for UE 115-a.
  • the context retrieval response may include the spare one (1) bit indication in the Msg3 for the availability of early measurement configuration results.
  • new MN 205 may identify the spare bit in Msg3 indicates the availability of early measurement configuration results. After identifying the spare bit in Msg3, new MN 205 may not blind configure the uplink grant for UE 115-a.
  • new MN 205 may include a request for the measurement reporting based on receiving the indication for the availability of early measurements in the Msg3.
  • UE 115-a may report the L3 measurement results based on receiving the request in the Msg4.
  • new MN 205 and UE 115-a may establish the SCG connection for UE 115-a based on an additional RRC reconfiguration message and an additional RRC reconfiguration complete message.
  • the additional RRC reconfiguration message may carry an RRC configuration for last serving MN 210 based on the UE 115-a context retrieval establishment performed at 235 and 340.
  • UE 115-a and last serving MN 210 may perform a RACH procedure, such as a random access procedure, to establish a connection for completing the DC configuration.
  • a RACH procedure such as a random access procedure
  • UE 115-a and last serving MN 210 may transmit uplink and downlink data between each other.
  • Figure 3 illustrates an example of a process flow 300 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the process flow 300 may implement aspects of wireless communications systems 100 and/or 200.
  • the process flow 300 may include a UE 115-b, a last serving MN 305, and an SN 310.
  • UE 115-b may be an example of a UE 115 as described above with reference to Figures 1 and 2.
  • Last serving MN 305 may be an example of a base station 105, MN, MCG, PCell, etc., as described above with reference to Figures 1 and 2.
  • SN 310 may be an example of a base station 105, SN, SCG, SCell, PSCell, etc., as described above with reference to Figures 1 and 2.
  • UE 115-b may be operating in a DC configuration with last serving MN 305 and SN 310.
  • last serving MN 305 may operate in a first RAT
  • SN 310 may operate in a second RAT, which may be different or the same as the first RAT, indicating a MR-DC configuration for communications between UE 115-b, last serving MN 305, and SN 310.
  • the process flow 300 may include similar messages as described and transmitted in process flow 200. However, in some implementations, UE 115-b may be unable to store a previously used lower-layer SCG configuration, such as due to memory limitations. However, last serving MN 305 may still store a lower-layer SCG configuration for SN 310.
  • last serving MN 305 when transmitting a release message to suspend communications between UE 115-b and SN 310, such as for UE 115-b to enter an inactive communication state, last serving MN 305 also may include a measurement configuration for a SCG including SN 310 of the DC configuration. Additionally, the additional IEs for determining whether a SCG configuration is valid also may be transmitted with the release message, such as the validity area, validity time, and threshold measurement value. In some implementations, last serving MN 305 may still transmit an IE for storing the lower-layer SCG configuration, but may set it to false.
  • the network may indicate to UE 115-b in the IE how to implement the spare bit or bits in Msg3.
  • the spare bit may be used to indicate whether UE 115-b can apply the stored SCG configuration of SN 310.
  • last serving MN 305 retrieves the SCG configuration from SN 310, last serving MN 305 may identify the spare bit in Msg3 and determine that UE 115-b may restore the SCG configuration of SN 310.
  • the network may indicate to UE 115-b to restore SCG configuration in the RRC Resume message of Msg4.
  • UE 115-b may enter the inactive communication state and store the higher-layer SCG configuration and the lower-layer SCG configuration.
  • UE 115-b and last serving MN 305 may transmit similar RACH messages as described above with reference to process flow 200.
  • UE 115-b may determine whether one or more cells in the SCG can be used for resumption of the SN communication based on the measurement configuration. For example, UE 115-b may perform measurements in accordance with the measurement configuration and determine whether to include an indication that a previously stored lower-layer secondary cell group configuration is available for resuming the SN communications based on the measurements. In some implementations, UE 115-b may perform measurements on cells that are included in the validity area, and if UE 115-b reselects to a cell or RNA outside a list of cells indicated by the validity area, measurements may no longer be required for that cell/RNA.
  • UE 115-b may regard the measurement configuration for the SCG to not be valid and may stop performing the measurements. In some implementations, UE 115-b also may stop performing the measurements for a particular SCell if a cell quality for that SCell falls below the threshold measurement value.
  • UE 115-b when transmitting a Msg3 of the RACH procedure, UE 115-b also may transmit assistance information to last serving MN 305 based on the measurements performed at 335.
  • the assistance information may include information to assist last serving MN 305 in determining whether to resume and apply the previously stored higher or lower-layer SCG configuration at the last serving MN 305 or an updated higher or lower-layer SCG configuration.
  • UE 115-b may include a suggested PSCell identifier with the assistance information.
  • last serving MN 305 and SN 310 may confirm that SN 310 is activated in the DC configuration based on an SN activation request message and an SN activation request ACK message.
  • last serving MN 305 may transmit a restore higher or lower-layer SCG configuration based on the spare bit information received in the Msg3 of the RACH procedure.
  • the higher or lower-layer SCG configuration may enable UE 115-b to resume the RRC connection with SN 310.
  • Msg4 may include an indication to restore the stored SCG configuration and resume the RRC connection with UE 115-a
  • new MN 205 may include a request for the measurement reporting based on receiving the indication for the availability of early measurements in the Msg3.
  • UE 115-b may apply the restored SCG configuration with the highest quality measurements.
  • UE 115-c may apply the initial SCG configuration selected by UE 115-b to communicate with the SN.
  • UE 115-b may perform similar steps as described in process flow 200 to complete a resuming of a connection with last serving MN 305, such as 360, perform an additional RACH with SN 310 such as 370, resume connections with both last serving MN 305 and SN 310, and transmitting data back and forth with SN 310 based on resuming the connections, such as 375.
  • Figure 4 illustrates an example of a process flow 400 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the process flow 400 may implement aspects of wireless communications systems 100 and/or 200.
  • the process flow 400 may include a UE 115-c, a last serving MN 405, and an SN 410.
  • UE 115-c may be an example of a UE 115 as described above with reference to Figures 1 and 2.
  • Last serving MN 405 may be an example of a base station 105, MN, MCG, PCell, etc., as described above with reference to Figures 1–3.
  • SN 410 may be an example of a base station 105, SN, SCG, SCell, PSCell, etc., as described above with reference to Figures 1–3.
  • UE 115-c may be operating in a DC configuration with last serving MN 405 and SN 410.
  • last serving MN 405 may operate in a first RAT
  • SN 410 may operate in a second RAT, which may be different or the same as the first RAT, indicating a MR-DC configuration for communications between UE 115-c, last serving MN 405, and SN 410.
  • the process flow 400 may include similar messages as described and transmitted in process flows 200 and 300. However, in some implementations, UE 115-c may be unable to store a previously used lower-layer SCG configuration, such as due to memory limitations. However, last serving MN 405 may still store a lower-layer SCG configuration for SN 410.
  • last serving MN 405 when transmitting a release message to suspend communications between UE 115-c and SN 410, such as for UE 115-c to enter an inactive communication state, last serving MN 405 also may include a measurement configuration for a SCG including SN 410 of the DC configuration.
  • the network may indicate to UE 115-c in the IE how to implement the spare bit or bits in Msg3.
  • the spare bit may be used to indicate whether the network may blindly reconfigure SCG with UE 115-c last serving SCG configuration.
  • last serving MN 405 retrieves the SCG configuration from SN 410, last serving MN 405 may identify the spare bit in Msg3 and determine that UE 115-c may not store the SCG configuration but instead the network may blindly configure SCG configuration.
  • the network may blindly provide the SCG configuration in the RRC Resume message of Msg4.
  • UE 115-c may enter the inactive communication state and store the higher-layer SCG configuration and the lower-layer SCG configuration.
  • UE 115-c and last serving MN 405 may transmit similar RACH messages as described above with reference to process flow 200.
  • UE 115-c may determine whether one or more cells in the SCG can be used for resumption of the SN communication based on the measurement configuration. For example, UE 115-c may perform measurements in accordance with the measurement configuration and determine whether to include an indication that a previously stored lower-layer secondary cell group configuration is available for resuming the SN communications based on the measurements. In some implementations, UE 115-c may perform measurements on cells that are included in the validity area, and if UE 115-c reselects to a cell or RNA outside a list of cells indicated by the validity area, measurements may no longer be required for that cell/RNA.
  • UE 115-c may regard the measurement configuration for the SCG to not be valid and may stop performing the measurements. In some implementations, UE 115-c also may stop performing the measurements for a particular SCell if a cell quality for that SCell falls below the threshold measurement value.
  • UE 115-c when transmitting a Msg3 of the RACH procedure, UE 115-c also may transmit assistance information to last serving MN 405 based on the measurements performed at 435.
  • the assistance information may include information to indicate the network may blindly reconfigure the SCG configuration.
  • UE 115-c may include a suggested PSCell identifier with the assistance information.
  • last serving MN 405 and SN 410 may confirm that SN 410 is activated in the DC configuration based on an SN activation request message and an SN activation request ACK message.
  • last serving MN 405 may transmit a higher or lower-layer SCG configuration based on the spare bit information received in the Msg3 of the RACH procedure.
  • Msg4 may include the SCG configuration.
  • UE 115-c may apply the SCG configuration with the highest quality measurements.
  • UE 115-c may apply the initial SCG configuration selected by UE 115-c to communicate with the SN.
  • UE 115-c may perform similar steps as described in process flow 200 to complete a resuming of a connection with last serving MN 405, such as 460, perform an additional RACH with SN 410 such as 470, resume connections with both last serving MN 405 and SN 410, and transmitting data back and forth with SN 410 based on resuming the connections, such as 475.
  • Figure 5 illustrates an example of a process flow 500 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the process flow 500 may implement aspects of wireless communications systems 100 or 200.
  • the process flow 500 may include a UE 115-d, a last serving MN 505, and an SN 510.
  • UE 115-d may be an example of a UE 115 as described herein with reference to Figures 1–4.
  • Last serving MN 505 may be an example of a base station 105, MN, MCG, PCell, etc., as described herein with reference to Figures 1–4.
  • SN 510 may be an example of a base station 105, SN, SCG, SCell, PSCell, etc., as described herein with reference to Figures 1–4.
  • UE 115-d may operate in a DC configuration with last serving MN 505 and SN 510.
  • last serving MN 505 may operate in a first RAT
  • SN 510 may operate in a second RAT, which may be different or the same as the first RAT, indicating a MR-DC configuration for communications between UE 115-d, last serving MN 505, and SN 510.
  • UE 115-d may receive, from last serving MN 505, a release message instructing UE 115-d to enter an inactive communications state with SN 510, and suspend communications between UE 115-c and SN 510.
  • the release message such as an RRC Release, may include an indication for UE 115-d to suspend communications on the initial SCG configuration.
  • the network may indicate to UE 115-d in an IE whether UE 115-d may use the RRC resume request of Msg3 with a shortened radio network temporary identifier (RNTI) , such as 48bits.
  • RNTI radio network temporary identifier
  • UE 115-d may implement the remaining 16 bits of the total 64bits in a RNTI to provide index information.
  • UE 115-a may measure multiple SN configurations and determine the highest quality configurations. After determining the highest quality configurations, UE 115-d may send the last serving MN 505 the indices of the highest quality SN configurations. Last serving MN 505 may provide the indices information in the RRC release message.
  • the remaining 16 bits of the RNTI also may include an indication of the availability of early measurement results, whether UE 115-a can apply stored SCG configuration of last serving MN, or whether the network may blindly reconfigure SCG with UE 115-c last serving SCG configuration.
  • the IE may be stored by last serving MN 210 in an inactive AS context of UE 115-d.
  • the release message also may include an indication of the cell state, such as StateSCell, of each SCell in the MCG and in the SCG.
  • the cell state may be one of deactivated, activated, or dormant.
  • the release message also may include a new set of security keys, generated using NCC.
  • the release message may include an indication of a set of SCG configurations for the UE.
  • the release message may include an indication from the MN of the SCG configuration to use to resume communications with the SN, such as a resume-indication.
  • UE 115-d may store the SCG configuration designated by MN 505 as the SCG configuration to resume communications on.
  • UE 115-c may store a set of higher layer SCG configurations and a corresponding set of lower layer SCG configurations based on the set of SCG configurations.
  • UE 115-d may determine to resume communications with a secondary node. Based on this determination, UE 115-d may determine an SCG configuration for communication with the secondary node based on a process of network based blind resume.
  • UE 115-d and last serving MN 505 may transmit similar RACH messages as described herein with reference to process flow 200.
  • UE 115-d may conduct measurements on one or more of the received set of candidate SCG configurations, which may have been received as part on the release message at 515.
  • UE 115-d may measure signaling from at least one SN after determining to resume communications with the SN, and the SCG may be selected based on measuring the signaling.
  • UE 115-d may select an initial SCG configuration based on a previous set of RSRP/RSRQ measurements or other measurements, and UE 115-d may determine which SCG configuration of the set of SCG configurations received in the release message that it has selected at the SCG configuration to resume communications on.
  • UE 115-d may transmit a Msg3, resume request message, such as RRCResume Request with the shortened RNTI and SCG configuration indices, to MN 505.
  • Msg3 may include an indication of the selected initial SCG configuration.
  • the selected SCG configuration also may be sent multiplexed with Msg3 at 540.
  • the security keys received by UE 115-d at 515 may be used for ciphering Msg3 at 540 or for multiplexing the preferred SCG configuration with Msg3 at 540.
  • last serving MN 505 may transmit, to SN 510 of the DC configuration an activation request message for the SN communications based on receiving the message from the UE that the secondary node communications are to resume, such as Msg3 at 540.
  • last serving MN 505 may transmit, to UE 115-d, a resume communications message, such as Msg4 of the RACH procedure or RRCResume message, including an indication for UE 115-d to resume communications with the SN using the SCG.
  • the indication may be received via an RRC message that includes data for UE 115-d.
  • 545 and 550 may be transmitted by last serving MN 505 at the same time, where last serving MN 505 transmits the resume communications message 550 and the activation request message 545 simultaneously based on last serving MN 505 storing a context for SN 510, such as including a lower-layer SCG configuration that may be used for SN 510. Additionally, at 555, SN 510 may transmit an SN addition request ACK message based on receiving the activation request message, where the SN addition request ACK message confirms that UE 115-d may initiate communications with SN 510 for the DC configuration.
  • UE 115-d may receive the resume communications message, such as Msg4 of the RACH procedure or RRCResume message, indicating to UE 115-d to resume communication with SN 510.
  • Msg4 may include the RRCResume message and an indication to restore the SCG configuration associated with the highest quality SN indexes UE 115-d reported.
  • Msg4 also may include an indication of the SCell states, such as SCellState.
  • the SCell states may be one or more of activated, deactivated, or dormant.
  • Msg4 may include a one bit indication, which may indicate either “true” or “false. ” In cases where the one bit indicates true, it may mean that the SCG configuration stored by UE 115-d and previously sent in the third message at 540, is the SCG configuration to be resumed on. In cases where the one bit indicates “false, ” the last serving MN may indicate that the SCG configuration stored by UE 115-d is not the SCG configuration to use, and the MN also may include a new SCG configuration in the fourth message.
  • UE 115-d may apply either the stored configuration or the transmitted new configuration after receiving Msg4, indicating the selected SCG configuration.
  • Msg4 does not include a resume indication
  • UE 115-d may discard the stored SCG configuration and may perform a set of SCG configuration measurements to report to the network in order to determine a new SCG configuration.
  • UE 115-d also may discard the set of SCG configurations based on the SCG configuration indicated by MN 505 being different than all SCG configurations of the set of SCG configurations.
  • UE 115-d may transmit a Msg5 of the RACH procedure to complete the resuming of communications with last serving MN 505, such as a RRCResumeComplete message.
  • UE 115-d may perform a RACH procedure with SN 510 based on the determined SCG configuration.
  • UE 115-d may communicate with the SN based on the performed RACH procedure.
  • UE 115-d may resume connections with both last serving MN 505 and SN 510 based on the applied SCG configuration.
  • UE 115-d may transmit data back and forth with SN 510 based on resuming the connections on the determined SCG configuration.
  • Figure 6 shows a block diagram 600 of a device 605 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the device 605 may be an example of aspects of a UE 115 as described herein.
  • the device 605 may include a receiver 610, a communications manager 615, and a transmitter 620.
  • the device 605 also may include a processor. Each of these components may be in communication with one another (such as via one or more buses) .
  • the receiver 610 may receive information such as packets, user data, or control information associated with various information channels (such as control channels, data channels, and information related to configurable request messaging for communication resume, etc. ) . Information may be passed on to other components of the device 605.
  • the receiver 610 may be an example of aspects of the transceiver 920 described with reference to Figure 9.
  • the receiver 610 may utilize a single antenna or a set of antennas.
  • the communications manager 615 may receive a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, determine, by the UE in the inactive state, to resume communications with the secondary node or the master node, transmit, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and receive a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the communications manager 615 may be an example of aspects of the communications manager 910 described herein.
  • the communications manager 615 may be implemented in hardware, code (such as software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 615, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a 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.
  • code such as software or firmware executed by a processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate
  • the communications manager 615 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 components.
  • the communications manager 615, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 615, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (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.
  • I/O input/output
  • the transmitter 620 may transmit signals generated by other components of the device 605.
  • 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 920 described with reference to Figure 9.
  • the transmitter 620 may utilize a single antenna or a set of antennas.
  • Figure 7 shows a block diagram 700 of a device 705 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the device 705 may be an example of aspects of a device 605, or a UE 115 as described herein.
  • the device 705 may include a receiver 710, a communications manager 715, and a transmitter 740.
  • the device 705 also may include a processor. Each of these components may be in communication with one another (such as via one or more buses) .
  • the receiver 710 may receive information such as packets, user data, or control information associated with various information channels (such as control channels, data channels, and information related to configurable request messaging for communication resume, etc. ) . Information may be passed on to other components of the device 705.
  • the receiver 710 may be an example of aspects of the transceiver 920 described with reference to Figure 9.
  • the receiver 710 may utilize a single antenna or a set of antennas.
  • the communications manager 715 may be an example of aspects of the communications manager 615 as described herein.
  • the communications manager 715 may include a release message receiver 720, a resumption manager 725, a request transmitter 730, and a resume receiver 735.
  • the communications manager 715 may be an example of aspects of the communications manager 910 described herein.
  • the release message receiver 720 may receive a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE.
  • the resumption manager 725 may determine, by the UE in the inactive state, to resume communications with the secondary node or the master node.
  • the request transmitter 730 may transmit, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message.
  • the resume receiver 735 may receive a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the transmitter 740 may transmit signals generated by other components of the device 705.
  • the transmitter 740 may be collocated with a receiver 710 in a transceiver module.
  • the transmitter 740 may be an example of aspects of the transceiver 920 described with reference to Figure 9.
  • the transmitter 740 may utilize a single antenna or a set of antennas.
  • FIG. 8 shows a block diagram 800 of a communications manager 805 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the communications manager 805 may be an example of aspects of a communications manager 615, a communications manager 715, or a communications manager 910 described herein.
  • the communications manager 805 may include a release message receiver 810, a resumption manager 815, a request transmitter 820, a resume receiver 825, an indication transmitter 830, a grant receiver 835, a resume complete transmitter 840, a validation module 845, a restore message receiver 850, a measurement component 855, and an index manager 860.
  • Each of these modules may communicate, directly or indirectly, with one another (such as via one or more buses) .
  • the release message receiver 810 may receive a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE.
  • the type of information includes an availability of the UE to perform early measurements.
  • the type of information includes a capability of the UE to apply a stored secondary cell group configuration.
  • the type of information includes a capability of the UE for blind reconfiguration of a secondary cell group configuration for the UE.
  • the type of information includes an index of one or more secondary nodes.
  • the release message indicates a request message type and a short radio network temporary identifier for the request message.
  • the resumption manager 815 may determine, by the UE in the inactive state, to resume communications with the secondary node or the master node.
  • the request transmitter 820 may transmit, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message.
  • the resume receiver 825 may receive a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the indication transmitter 830 may transmit, in the at least one bit of the request message, an indication that the UE is capable of performing early measurements.
  • the indication transmitter 830 may transmit, in the at least one bit of the request message, an indication that the UE is incapable of performing early measurements.
  • the indication transmitter 830 may transmit, in the at least one bit of the request message, an indication that the stored secondary cell group configuration is valid.
  • the indication transmitter 830 may transmit, in the at least one bit of the request message, an indication that blind secondary cell group reconfiguration is supported by the UE.
  • the grant receiver 835 may receive, in the resume message, an uplink grant for performing early measurements by the UE.
  • the resume complete transmitter 840 may transmit a resume complete message to the master node after receiving the uplink grant, where the resume complete message includes a report of one or more early measurements performed by the UE.
  • the validation module 845 may validate the stored secondary cell group configuration based on configuration information indicated by the release message.
  • the restore message receiver 850 may receive a restore message from the master node indicating the UE to restore the stored secondary cell group configuration.
  • the restore message receiver 850 may receive a restore message from the master node indicating a secondary cell group configuration for the UE in response to the indication.
  • the restore message receiver 850 may receive a restore message from the master node indicating the UE to restore the one of the one or more secondary cell group configurations corresponding to the index of the at least one secondary node.
  • the measurement component 855 may measure one or more secondary cell group configurations indicated by the release message.
  • the index manager 860 may transmit, in the at least one bit of the request message, an index of at least one secondary node corresponding to one of the one or more secondary cell group configurations based on the measuring.
  • Figure 9 shows a diagram of a system 900 including a device 905 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the device 905 may be an example of or include the components of device 605, device 705, or a UE 115 as described herein.
  • the device 905 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 910, an I/O controller 915, a transceiver 920, an antenna 925, memory 930, and a processor 940. These components may be in electronic communication via one or more buses (such as bus 945) .
  • buses such as bus 945
  • the communications manager 910 may receive a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, determine, by the UE in the inactive state, to resume communications with the secondary node or the master node, transmit, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and receive a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the I/O controller 915 may manage input and output signals for the device 905.
  • the I/O controller 915 also may manage peripherals not integrated into the device 905.
  • the I/O controller 915 may represent a physical connection or port to an external peripheral.
  • the I/O controller 915 may utilize an operating system such as or another known operating system.
  • the I/O controller 915 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 915 may be implemented as part of a processor.
  • a user may interact with the device 905 via the I/O controller 915 or via hardware components controlled by the I/O controller 915.
  • the transceiver 920 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 920 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 920 also may 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 925. However, in some implementations the device may have more than one antenna 925, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 930 may include RAM and ROM.
  • the memory 930 may store computer-readable, computer-executable code 935 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 930 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 940 may include an intelligent hardware device, (such as 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) .
  • the processor 940 may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into the processor 940.
  • the processor 940 may be configured to execute computer-readable instructions stored in a memory (such as the memory 930) to cause the device 905 to perform various functions (such as functions or tasks supporting configurable request messaging for communication resume) .
  • the code 935 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 935 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory.
  • the code 935 may not be directly executable by the processor 940 but may cause a computer (such as when compiled and executed) to perform functions described herein.
  • Figure 10 shows a block diagram 1000 of a device 1005 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the device 1005 may be an example of aspects of a base station 105 as described herein.
  • the device 1005 may include a receiver 1010, a communications manager 1015, and a transmitter 1020.
  • the device 1005 also may include a processor. Each of these components may be in communication with one another (such as via one or more buses) .
  • the receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (such as control channels, data channels, and information related to configurable request messaging for communication resume, etc. ) . Information may be passed on to other components of the device 1005.
  • the receiver 1010 may be an example of aspects of the transceiver 1320 described with reference to Figure 13.
  • the receiver 1010 may utilize a single antenna or a set of antennas.
  • the communications manager 1015 may transmit a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, receive, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and transmit a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the communications manager 1015 may be an example of aspects of the communications manager 1310 described herein.
  • the communications manager 1015 may be implemented in hardware, code (such as software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 1015, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a 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.
  • code such as software or firmware executed by a processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate
  • the communications manager 1015 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 components.
  • the communications manager 1015, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 1015, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (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.
  • I/O input/output
  • the transmitter 1020 may transmit signals generated by other components of the device 1005.
  • 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 1320 described with reference to Figure 13.
  • the transmitter 1020 may utilize a single antenna or a set of antennas.
  • Figure 11 shows a block diagram 1100 of a device 1105 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the device 1105 may be an example of aspects of a device 1005, or a base station 105 as described herein.
  • the device 1105 may include a receiver 1110, a communications manager 1115, and a transmitter 1135.
  • the device 1105 also may include a processor. Each of these components may be in communication with one another (such as via one or more buses) .
  • the receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (such as control channels, data channels, and information related to configurable request messaging for communication resume, etc. ) . Information may be passed on to other components of the device 1105.
  • the receiver 1110 may be an example of aspects of the transceiver 1320 described with reference to Figure 13.
  • the receiver 1110 may utilize a single antenna or a set of antennas.
  • the communications manager 1115 may be an example of aspects of the communications manager 1015 as described herein.
  • the communications manager 1115 may include a release message transmitter 1120, a request receiver 1125, and a resume transmitter 1130.
  • the communications manager 1115 may be an example of aspects of the communications manager 1310 described herein.
  • the release message transmitter 1120 may transmit a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE.
  • the request receiver 1125 may receive, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message.
  • the resume transmitter 1130 may transmit a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the transmitter 1135 may transmit signals generated by other components of the device 1105.
  • the transmitter 1135 may be collocated with a receiver 1110 in a transceiver module.
  • the transmitter 1135 may be an example of aspects of the transceiver 1320 described with reference to Figure 13.
  • the transmitter 1135 may utilize a single antenna or a set of antennas.
  • FIG. 12 shows a block diagram 1200 of a communications manager 1205 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the communications manager 1205 may be an example of aspects of a communications manager 1015, a communications manager 1115, or a communications manager 1310 described herein.
  • the communications manager 1205 may include a release message transmitter 1210, a request receiver 1215, a resume transmitter 1220, an indication receiver 1225, a grant transmitter 1230, a resume complete receiver 1235, a restore message transmitter 1240, and an index receiver 1245.
  • Each of these modules may communicate, directly or indirectly, with one another (such as via one or more buses) .
  • the release message transmitter 1210 may transmit a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE.
  • the type of information includes an availability of the UE to perform early measurements.
  • the type of information includes a capability of the UE to apply a stored secondary cell group configuration.
  • the type of information includes a capability of the UE for blind reconfiguration of a secondary cell group configuration for the UE.
  • the type of information includes an index of one or more secondary nodes.
  • the release message indicates a request message type and a short radio network temporary identifier for the request message.
  • the request receiver 1215 may receive, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message.
  • the resume transmitter 1220 may transmit a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the indication receiver 1225 may receive, in the at least one bit of the request message, an indication that the UE is capable of performing early measurements.
  • the indication receiver 1225 may receive, in the at least one bit of the request message, an indication that the UE is incapable of performing early measurements.
  • the indication receiver 1225 may receive, in the at least one bit of the request message, an indication that the stored secondary cell group configuration is valid.
  • the indication receiver 1225 may receive, in the at least one bit of the request message, an indication that blind secondary cell group reconfiguration is supported by the UE.
  • the grant transmitter 1230 may transmit, in the resume message, an uplink grant for performing early measurements by the UE.
  • the resume complete receiver 1235 may receive a resume complete message from the UE after transmitting the uplink grant, where the resume complete message includes a report of one or more early measurements performed by the UE.
  • the restore message transmitter 1240 may transmit a restore message to the UE instructing the UE to restore the stored secondary cell group configuration.
  • the restore message transmitter 1240 may transmit a restore message to the UE indicating a secondary cell group configuration for the UE in response to the indication.
  • the restore message transmitter 1240 may transmit a restore message to the UE instructing the UE to restore the a secondary cell group configuration corresponding to the index of the at least one secondary node.
  • the index receiver 1245 may receive, in the at least one bit of the request message, an index of at least one secondary node corresponding to one of the one or more secondary nodes.
  • Figure 13 shows a diagram of a system 1300 including a device 1305 that supports configurable request messaging for communication resume in accordance with aspects of the present disclosure.
  • the device 1305 may be an example of or include the components of device 1005, device 1105, or a base station 105 as described herein.
  • the device 1305 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 1310, a network communications manager 1315, a transceiver 1320, an antenna 1325, memory 1330, a processor 1340, and an inter-station communications manager 1345. These components may be in electronic communication via one or more buses (such as bus 1350) .
  • buses such as bus 1350
  • the communications manager 1310 may transmit a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE, receive, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message, and transmit a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the network communications manager 1315 may manage communications with the core network (such as via one or more wired backhaul links) .
  • the network communications manager 1315 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • the transceiver 1320 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1320 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1320 also may 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 1325. However, in some implementations the device may have more than one antenna 1325, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 1330 may include RAM, ROM, or a combination thereof.
  • the memory 1330 may store computer-readable code 1335 including instructions that, when executed by a processor (such as the processor 1340) cause the device to perform various functions described herein.
  • the memory 1330 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 1340 may include an intelligent hardware device, (such as 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) .
  • the processor 1340 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1340.
  • the processor 1340 may be configured to execute computer-readable instructions stored in a memory (such as the memory 1330) to cause the device 1305 to perform various functions (such as functions or tasks supporting configurable request messaging for communication resume) .
  • the inter-station communications manager 1345 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 1345 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission. In some implementations, the inter-station communications manager 1345 may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations 105.
  • the code 1335 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 1335 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory.
  • the code 1335 may not be directly executable by the processor 1340 but may cause a computer (such as when compiled and executed) to perform functions described herein.
  • Figure 14 shows a flowchart illustrating a method 1400 that supports configurable request messaging for communication resume 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 communications manager as described with reference to Figures 6 through 9.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally, or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may receive a release message from the master node instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE.
  • the operations of 1405 may be performed according to the methods described herein. In some implementations, aspects of the operations of 1405 may be performed by a release message receiver as described with reference to Figures 6 through 9.
  • the UE may determine, by the UE in the inactive state, to resume communications with the secondary node or the master node.
  • the operations of 1410 may be performed according to the methods described herein. In some implementations, aspects of the operations of 1410 may be performed by a resumption manager as described with reference to Figures 6 through 9.
  • the UE may transmit, by the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message.
  • the operations of 1415 may be performed according to the methods described herein. In some implementations, aspects of the operations of 1415 may be performed by a request transmitter as described with reference to Figures 6 through 9.
  • the UE may receive a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the operations of 1420 may be performed according to the methods described herein. In some implementations, aspects of the operations of 1420 may be performed by a resume receiver as described with reference to Figures 6 through 9.
  • Figure 15 shows a flowchart illustrating a method 1500 that supports configurable request messaging for communication resume 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 communications manager as described with reference to Figures 10 through 13.
  • a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally, or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.
  • the base station may transmit a release message to the UE instructing the UE to enter an inactive state, the release message including an indication of a type of information to include in at least one bit of a request message from the UE.
  • the operations of 1505 may be performed according to the methods described herein. In some implementations, aspects of the operations of 1505 may be performed by a release message transmitter as described with reference to Figures 10 through 13.
  • the base station may receive, from the UE in the inactive state, the request message to request resumption of communications with the secondary node or the master node, where the at least one bit of the request message includes information associated with the type of information indicated by the release message.
  • the operations of 1510 may be performed according to the methods described herein. In some implementations, aspects of the operations of 1510 may be performed by a request receiver as described with reference to Figures 10 through 13.
  • the base station may transmit a resume message in response to the request message, the resume message indicating one or more parameters for resuming communications with the master node or the secondary node based on the information indicated by the at least one bit of the request message.
  • the operations of 1515 may be performed according to the methods described herein. In some implementations, aspects of the operations of 1515 may be performed by a resume transmitter as described with reference to Figures 10 through 13.
  • a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members.
  • “at least one of: a, b, or c” is intended to cover: a, b, c, a-b, a-c, b-c, and a-b-c.
  • the hardware and data processing apparatus used to implement the various illustrative logics, logical blocks, modules and circuits described in connection with the aspects disclosed herein may be implemented or performed with a general purpose single-or multi-chip processor, a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor, or, any conventional processor, controller, microcontroller, or state machine.
  • a processor also may be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • particular processes and methods may be performed by circuitry that is specific to a given function.
  • the functions described may be implemented in hardware, digital electronic circuitry, computer software, firmware, including the structures disclosed in this specification and their structural equivalents thereof, or in any combination thereof. Implementations of the subject matter described in this specification also can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions, encoded on a computer storage media for execution by, or to control the operation of, data processing apparatus.
  • Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program from one place to another.
  • a storage media may be any available media that may be accessed by a computer.
  • such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to store desired program code in the form of instructions or data structures and that may be accessed by a computer.
  • Disk and disc includes compact disc (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 should also be included within the scope of computer-readable media. Additionally, the operations of a method or algorithm may reside as one or any combination or set of codes and instructions on a machine readable medium and computer-readable medium, which may be incorporated into a computer program product.
  • 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 herein 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 (such as several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a small cell may be associated with a lower-powered base station, as compared with a macro cell, and a small cell may operate in the same or different (such as 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 with service subscriptions with the network provider.
  • a femto cell also may cover a small geographic area (such as a home) and may provide restricted access by UEs having an association with the femto cell (such as UEs in a closed subscriber group (CSG) , UEs 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 (such as two, three, four, and the like) cells, and also may support communications using one or multiple component carriers.
  • the wireless communications systems described herein may support synchronous or asynchronous operation.
  • the base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time.
  • the base stations may have different frame timing, and transmissions from different base stations may not be aligned in time.
  • the techniques described herein may be used for either synchronous or asynchronous operations.
  • 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 also may be implemented as a combination of computing devices (such as 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 implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions also may 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 include random-access memory (RAM) , read-only memory (ROM) , electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-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 ROM
  • flash memory compact disk (CD) ROM or other optical disk storage
  • magnetic disk storage or other magnetic storage devices
  • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des procédés, des systèmes, et des dispositifs destinés aux communications sans fil sont décrits. Un équipement utilisateur (UE) peut fonctionner dans une configuration à double connectivité (DC) avec un nœud maître (MN) et un nœud secondaire (SN). L'UE peut recevoir en provenance du MN un message de libération de commande de ressource radio (RRC) qui ordonne à l'UE d'entrer dans un état de communication inactif. Le message de libération peut indiquer des informations à inclure dans un bit de réserve d'un message de demande de reprise RRC, à partir de l'UE. Dans le message de libération RRC, le réseau peut configurer la manière dont l'UE doit mettre en œuvre le bit de réserve dans le message de demande de reprise RRC. Le bit de réserve peut indiquer la disponibilité des premiers résultats de mesure, si l'UE peut appliquer une configuration de groupe de cellules secondaires (SCG) stockée du dernier SN de desserte, ou si le réseau peut reconfigurer de manière aveugle le SCG avec la dernière configuration SCG de desserte de l'UE.
PCT/CN2019/110547 2019-10-11 2019-10-11 Messagerie de demande configurable pour la reprise de communication WO2021068184A1 (fr)

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