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WO2021217469A1 - Mesures de cellule à double connectivité - Google Patents

Mesures de cellule à double connectivité Download PDF

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Publication number
WO2021217469A1
WO2021217469A1 PCT/CN2020/087649 CN2020087649W WO2021217469A1 WO 2021217469 A1 WO2021217469 A1 WO 2021217469A1 CN 2020087649 W CN2020087649 W CN 2020087649W WO 2021217469 A1 WO2021217469 A1 WO 2021217469A1
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WIPO (PCT)
Prior art keywords
cell
measurement
serving cell
cells
satisfies
Prior art date
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Ceased
Application number
PCT/CN2020/087649
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English (en)
Inventor
Yuankun ZHU
Chaofeng HUI
Fojian ZHANG
Hao Zhang
Yi Liu
Pan JIANG
Quanling ZHANG
Gang Liu
Qiang Li
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Qualcomm Inc
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Qualcomm Inc
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Publication date
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Priority to PCT/CN2020/087649 priority Critical patent/WO2021217469A1/fr
Publication of WO2021217469A1 publication Critical patent/WO2021217469A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00698—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using different RATs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • aspects of the present disclosure relate generally to wireless communication and to techniques for dual connectivity cell measurements.
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (for example, bandwidth, transmit power, etc. ) .
  • multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) .
  • LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • UMTS Universal Mobile Telecommunications System
  • a wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs) .
  • a user equipment (UE) may communicate with a base station (BS) via the downlink (DL) and uplink (UL) .
  • the DL (or forward link) refers to the communication link from the BS to the UE
  • the UL (or reverse link) refers to the communication link from the UE to the BS.
  • a BS may be referred to as a NodeB, an LTE evolved nodeB (eNB) , a gNB, an access point (AP) , a radio head, a transmit receive point (TRP) , a New Radio (NR) BS, a 5G NodeB, or the like.
  • eNB LTE evolved nodeB
  • AP access point
  • TRP transmit receive point
  • NR New Radio
  • NR which also may be referred to as 5G
  • 5G is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency-division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the DL, using CP-OFDM or SC-FDM (for example, also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the UL (or a combination thereof) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • OFDM orthogonal frequency-division multiplexing
  • SC-FDM for example, also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)
  • MIMO multiple-input multiple-output
  • the method may include determining whether a cell measurement for a serving cell of the UE satisfies a measurement threshold.
  • the method may include selectively performing, based at least in part on determining whether the cell measurement for the serving cell satisfies the measurement threshold, one or more cell measurements for one or more cells capable of supporting a single radio access technology (RAT) .
  • RAT radio access technology
  • the one or more cells are capable of supporting a Long Term Evolution (LTE) RAT.
  • the method includes determining that the one or more cells are capable of supporting a single RAT based at least in part on band information associated with the one or more cells.
  • band information for a cell of the one or more cells identifies an operating frequency band for the cell.
  • the UE is operating in an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) -New Radio (NR) dual connectivity (ENDC) configuration.
  • E-UTRA Evolved Universal Mobile Telecommunications System Terrestrial Radio Access
  • NR New Radio
  • ENDC dual connectivity
  • the serving cell is an LTE master cell for the UE in the ENDC configuration, and the UE is communicatively connected with a 5G secondary cell in the ENDC configuration.
  • the method includes receiving a measurement control order from the serving cell, and determining whether the cell measurement for the serving cell of the UE satisfies the measurement threshold is based at least in part on receiving the measurement control order from the serving cell.
  • the one or more cells are indicated by the measurement control order.
  • determining whether the cell measurement for the serving cell satisfies the measurement threshold includes determining that the cell measurement for the serving cell satisfies the measurement threshold, and selectively performing the one or more cell measurements for the one or more cells includes refraining from performing the one or more cell measurements for the one or more cells based at least in part on determining that the cell measurement for the serving cell satisfies the measurement threshold.
  • the method includes performing, based at least in part on determining that the cell measurement for the serving cell satisfies the measurement threshold, one or more second cell measurements for one or more second cells that are capable of supporting a plurality of RATs.
  • determining whether the cell measurement for the serving cell satisfies the measurement threshold includes determining that the cell measurement for the serving cell does not satisfy the measurement threshold, and selectively performing the one or more cell measurements for the one or more cells is based at least in part on determining that the cell measurement for the serving cell does not satisfy the measurement threshold.
  • the method includes performing, based at least in part on determining that the cell measurement for the serving cell does not satisfy the measurement threshold, one or more second cell measurements for one or more second cells that are capable of supporting a plurality of RATs.
  • the UE may include a memory and one or more processors operatively coupled to the memory.
  • the memory and the one or more processors may be configured to determine whether a cell measurement for a serving cell of the UE satisfies a measurement threshold.
  • the memory and the one or more processors may be configured to selectively perform, based at least in part on determining whether the cell measurement for the serving cell satisfies the measurement threshold, one or more cell measurements for one or more cells capable of supporting a single RAT.
  • the UE may perform or implement any one or more of the aspects described in connection with the method, above or elsewhere herein.
  • the non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a UE, may cause the one or more processors to determine whether a cell measurement for a serving cell of the UE satisfies a measurement threshold.
  • the one or more instructions when executed by one or more processors of a UE, may cause the one or more processors to selectively perform, based at least in part on determining whether the cell measurement for the serving cell satisfies the measurement threshold, one or more cell measurements for one or more cells capable of supporting a single RAT.
  • the non-transitory computer-readable medium may perform or implement any one or more of the aspects described in connection with the method, above or elsewhere herein.
  • the apparatus may include means for determining whether a cell measurement for a serving cell of the apparatus satisfies a measurement threshold.
  • the apparatus may include means for selectively performing, based at least in part on determining whether the cell measurement for the serving cell satisfies the measurement threshold, one or more cell measurements for one or more cells capable of supporting a single RAT.
  • the apparatus may perform or implement any one or more of the aspects described in connection with the method, above or elsewhere herein.
  • Figure 1 is a block diagram conceptually illustrating an example of a wireless network.
  • Figure 2 is a block diagram conceptually illustrating an example of a base station in communication with a user equipment (UE) in a wireless network.
  • UE user equipment
  • Figures 3 and 4 are diagrams illustrating example processes performed, for example, by a UE.
  • the described implementations may be implemented in any device, system or network that is capable of transmitting and receiving radio frequency signals according to any of the wireless communication standards, including 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 Speed Uplink Packet Access (HSUPA) , Evolved High Speed Packet Access (HSPA+) , Long Term Evolution (LTE) , AMPS, or other known signals that are used
  • a device such as a user equipment (UE) may operate in a dual (or multi) connectivity configuration, in which the UE is communicatively connected with a first cell (master cell) and one or more second cells (secondary cells) .
  • E-UTRA Evolved Universal Mobile Telecommunications System Terrestrial Radio Access
  • E-NR Evolved Universal Mobile Telecommunications System Terrestrial Radio Access
  • the master cell or primary cell, PCell
  • RAT LTE radio access technology
  • SCell secondary cell
  • a master cell in a dual (or multi) connectivity configuration may transmit a measurement control order (MCO) to configure the UE to perform cell measurements of neighboring cells of the master cell to facilitate secondary cell handover.
  • MCO measurement control order
  • not all cells may be capable of supporting more than one RAT.
  • some cells in the wireless network may be capable of supporting only an LTE RAT, whereas other cells in the wireless network may be capable of supporting both an LTE RAT and a 5G NR RAT.
  • a master cell in a dual (or multi) connectivity configuration configures a UE to perform a cell measurement of a neighboring cell that only supports a single RAT (for example, a cell that only supports an LTE RAT and is not capable of supporting a 5G NR RAT)
  • the UE may perform and report the cell measurement to the master cell.
  • the cell measurement of the cell that only supports the single RAT may cause the master cell to terminate existing connections with secondary cells that support a plurality of RATs, and to instruct the UE to establish a connection with the cell that only supports the single RAT.
  • the UE may lose access to 5G NR services provided by a secondary cell that is capable of supporting both an LTE RAT and a 5G NR RAT.
  • a UE may be capable of performing a cell measurement of a serving cell (such as a master cell in a dual or multi connectivity configuration) and determining whether the cell measurement satisfies a measurement threshold (for example, -90 dBm, -80 dBm, or another example measurement threshold) . If the UE determines that the cell measurement does not satisfy the threshold, the UE may perform cell measurements for one or more first cells (such as neighboring cells of the master cell) capable of supporting a single RAT as well as one or more second cells (such as neighboring cells of the master cell) capable of supporting a plurality of RATs.
  • a measurement threshold for example, -90 dBm, -80 dBm, or another example measurement threshold
  • the UE may perform cell measurements for the one or more second cells capable of supporting a plurality of RATs, and may refrain from performing cell measurements for the one or more first cells capable of supporting a single RAT.
  • the mobility of the UE may be maintained or improved by performing and reporting cell measurements for cells capable of supporting LTE only and cells capable of supporting both LTE and 5G NR. As such, the quantity of candidate secondary cells for the UE may be increased. Moreover, the UE may be capable of conserving battery life of the UE and increasing or prioritizing access to 5G NR services by performing and reporting cell measurements for cells capable of supporting both LTE and 5G NR.
  • FIG. 1 is a block diagram conceptually illustrating an example of a wireless network 100.
  • the wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network.
  • Wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities.
  • a BS is an entity that communicates with UEs and also may be referred to as a base station, a NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, a transmit receive point (TRP) , or the like.
  • Each BS may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a BS, a BS subsystem serving this coverage area, or a combination thereof, depending on the context in which the term is used.
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, another type of cell, or a combination thereof.
  • a macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by UEs having association with the femto cell (for example, UEs in a closed subscriber group (CSG) ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • a BS 110a may be a macro BS for a macro cell 102a
  • a BS 110b may be a pico BS for a pico cell 102b
  • a BS 110c may be a femto BS for a femto cell 102c.
  • a BS may support one or multiple (for example, three) cells.
  • eNB base station
  • NR BS NR BS
  • gNB gNode B
  • AP AP
  • node B node B
  • 5G NB 5G NB
  • cell may be used interchangeably herein.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS.
  • the BSs may be interconnected to one another as well as to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces, such as a direct physical connection, a virtual network, or a combination thereof using any suitable transport network.
  • Wireless network 100 also may include relay stations.
  • a relay station is an entity that can receive a transmission of data from an upstream station (for example, a BS or a UE) and send a transmission of the data to a downstream station (for example, a UE or a BS) .
  • a relay station also may be a UE that can relay transmissions for other UEs.
  • a relay station 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d.
  • a relay station also may be referred to as a relay BS, a relay base station, a relay, etc.
  • Wireless network 100 may be a heterogeneous network that includes BSs of different types, for example, macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100.
  • macro BSs may have a high transmit power level (for example, 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (for example, 0.1 to 2 Watts) .
  • a network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs.
  • Network controller 130 may communicate with the BSs via a backhaul.
  • the BSs also may communicate with one another, for example, directly or indirectly via a wireless or wireline backhaul.
  • UEs 120 may be dispersed throughout wireless network 100, and each UE may be stationary or mobile.
  • a UE also may be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc.
  • a UE may be a cellular phone (for example, a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (for example, smart ring, smart bracelet) ) , an entertainment device (for example, a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.
  • PDA personal digital assistant
  • WLL wireless local loop
  • Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs.
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a base station, another device (for example, remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (for example, a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some UEs may be considered Internet-of-Things (IoT) devices or may be implemented as NB-IoT (narrowband internet of things) devices.
  • Some UEs may be considered a Customer Premises Equipment (CPE) .
  • UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, similar components, or a combination thereof.
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular RAT and may operate on one or more frequencies.
  • a RAT also may be referred to as a radio technology, an air interface, etc.
  • a frequency also may be referred to as a carrier, a frequency channel, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • NR or 5G RAT networks may be deployed.
  • access to the air interface may be scheduled, where a scheduling entity (for example, a base station) allocates resources for communication among some or all devices and equipment within the scheduling entity’s service area or cell.
  • a scheduling entity for example, a base station
  • the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities utilize resources allocated by the scheduling entity.
  • Base stations are not the only entities that may function as a scheduling entity. That is, in some examples, a UE may function as a scheduling entity, scheduling resources for one or more subordinate entities (for example, one or more other UEs) . In this example, the UE is functioning as a scheduling entity, and other UEs utilize resources scheduled by the UE for wireless communication.
  • a UE may function as a scheduling entity in a peer-to-peer (P2P) network, in a mesh network, or another type of network. In a mesh network example, UEs may optionally communicate directly with one another in addition to communicating with the scheduling entity.
  • P2P peer-to-peer
  • mesh network UEs may optionally communicate directly with one another in addition to communicating with the scheduling entity.
  • a scheduling entity and one or more subordinate entities may communicate utilizing the scheduled resources.
  • two or more UEs 120 may communicate directly using one or more sidelink channels (for example, without using a base station 110 as an intermediary to communicate with one another) .
  • the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or similar protocol) , a mesh network, or similar networks, or combinations thereof.
  • V2X vehicle-to-everything
  • the UE 120 may perform scheduling operations, resource selection operations, as well as other operations described elsewhere herein as being performed by the base station 110.
  • FIG 2 is a block diagram conceptually illustrating an example 200 of a base station 110 in communication with a UE 120.
  • base station 110 and UE 120 may respectively be one of the base stations and one of the UEs in wireless network 100 of Figure 1.
  • Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T ⁇ 1 and R ⁇ 1.
  • a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (for example, encode and modulate) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs.
  • MCS modulation and coding schemes
  • CQIs channel quality indicators
  • the transmit processor 220 also may process system information (for example, for semi-static resource partitioning information (SRPI) , etc. ) and control information (for example, CQI requests, grants, upper layer signaling, etc. ) and provide overhead symbols and control symbols.
  • system information for example, for semi-static resource partitioning information (SRPI) , etc.
  • control information for example, CQI requests, grants, upper layer signaling, etc.
  • the transmit processor 220 also may generate reference symbols for reference signals (for example, the cell-specific reference signal (CRS) ) and synchronization signals (for example, the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (for example, precoding) on the data symbols, the control symbols, the overhead symbols, or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (for example, for OFDM, etc. ) to obtain an output sample stream.
  • Each modulator 232 may further process (for example, convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.
  • the synchronization signals can be generated with location encoding to convey additional information.
  • antennas 252a through 252r may receive the downlink signals from base station 110 or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively.
  • Each demodulator 254 may condition (for example, filter, amplify, downconvert, and digitize) a received signal to obtain input samples.
  • Each demodulator 254 may further process the input samples (for example, for OFDM, etc. ) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (for example, demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller or processor (controller/processor) 280.
  • a channel processor may determine reference signal received power (RSRP) , received signal strength indicator (RSSI) , reference signal received quality (RSRQ) , channel quality indicator (CQI) , etc.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSRQ reference signal received quality
  • CQI channel quality indicator
  • one or more components of UE 120 may be included in a housing.
  • a transmit processor 264 may receive and process data from a data source 262 and control information (for example, for reports including RSRP, RSSI, RSRQ, CQI, etc. ) from controller/processor 280. Transmit processor 264 also may generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (for example, for DFT-s- OFDM, CP-OFDM, etc. ) , and transmitted to base station 110.
  • the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120.
  • Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller or processor (i.e., controller/processor) 240.
  • the base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244.
  • the network controller 130 may include communication unit 294, a controller or processor (i.e., controller/processor) 290, and memory 292.
  • controller/processor 280 may be a component of a processing system.
  • a processing system may generally refer to a system or series of machines or components that receives inputs and processes the inputs to produce a set of outputs (which may be passed to other systems or components of, for example, the UE 120) .
  • a processing system of the UE 120 may refer to a system including the various other components or subcomponents of the UE 120.
  • the processing system of the UE 120 may interface with other components of the UE 120, and may process information received from other components (such as inputs or signals) , output information to other components, etc.
  • a chip or modem of the UE 120 may include a processing system, a first interface to receive or obtain information, and a second interface to output, transmit or provide information.
  • the first interface may refer to an interface between the processing system of the chip or modem and a receiver, such that the UE 120 may receive information or signal inputs, and the information may be passed to the processing system.
  • the second interface may refer to an interface between the processing system of the chip or modem and a transmitter, such that the UE 120 may transmit information output from the chip or modem.
  • the second interface also may obtain or receive information or signal inputs, and the first interface also may output, transmit or provide information.
  • the controller/processor 240 of base station 110, the controller/processor 280 of UE 120, or any other component (s) of Figure 2 may perform one or more techniques associated with dual connectivity cell measurements, as described in more detail elsewhere herein.
  • the controller/processor 240 of base station 110, the controller/processor 280 of UE 120, or any other component (s) (or combinations of components) of Figure 2 may perform or direct operations of, for example, process 400 of Figure 4 or other processes as described herein.
  • the memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively.
  • a scheduler 246 may schedule UEs for data transmission on the downlink, the uplink, or a combination thereof.
  • the stored program codes when executed by the controller/processor 280 or other processors and modules at UE 120, may cause the UE 120 to perform operations described with respect to process 400 of Figure 4 or other processes as described herein.
  • a scheduler 246 may schedule UEs for data transmission on the downlink, the uplink, or a combination thereof.
  • UE 120 may include means for determining whether a cell measurement for a serving cell of the UE satisfies a measurement threshold, means for selectively performing, based at least in part on determining whether the cell measurement for the serving cell satisfies the measurement threshold, one or more cell measurements for one or more cells capable of supporting a single RAT, or the like, or combinations thereof.
  • such means may include one or more components of UE 120 described in connection with Figure 2.
  • While blocks in Figure 2 are illustrated as distinct components, the functions described with respect to the blocks may be implemented in a single hardware, software, or combination component or in various combinations of components.
  • the functions described with respect to the transmit processor 264, the receive processor 258, the TX MIMO processor 266, or another processor may be performed by or under the control of controller/processor 280.
  • FIG. 3 is a diagram illustrating an example process 300 performed, for example, by a UE.
  • the process 300 is an example where a UE (for example, UE 120) performs selective dual connectivity cell measurements.
  • the process 300 may include determining whether a cell measurement for a serving cell of the UE satisfies a measurement threshold (block 310) .
  • the UE (such as by using receive processor 258, transmit processor 264, controller/processor 280, memory 282, another component, or a combination thereof) may determine whether a cell measurement for a serving cell of the UE satisfies a measurement threshold.
  • the process 300 may include selectively performing, based at least in part on determining whether the cell measurement for the serving cell satisfies the measurement threshold, one or more cell measurements for one or more cells capable of supporting a single RAT (block 320) .
  • the UE (such as by using receive processor 258, transmit processor 264, controller/processor 280, memory 282, another component, or a combination thereof) may selectively perform, based at least in part on determining whether the cell measurement for the serving cell satisfies the measurement threshold, one or more cell measurements for one or more cells capable of supporting a single RAT.
  • the process 300 may include additional aspects, such as any single aspect or any combination of aspects described below or in connection with one or more other processes described elsewhere herein.
  • the one or more cells are capable of supporting an LTE RAT.
  • the process 300 includes determining that the one or more cells are capable of supporting a single RAT based at least in part on band information associated with the one or more cells.
  • band information for a cell of the one or more cells identifies an operating frequency band for the cell.
  • the UE is operating in an ENDC configuration.
  • the serving cell is an LTE master cell for the UE in the ENDC configuration, and the UE is communicatively connected with a 5G secondary cell in the ENDC configuration.
  • determining whether the cell measurement for the serving cell of the UE satisfies the measurement threshold is based at least in part on receiving the measurement control order from the serving cell.
  • the one or more cells are indicated by the measurement control order.
  • determining whether the cell measurement for the serving cell satisfies the measurement threshold includes determining that the cell measurement for the serving cell satisfies the measurement threshold, and selectively performing the one or more cell measurements for the one or more cells includes refraining from performing the one or more cell measurements for the one or more cells based at least in part on determining that the cell measurement for the serving cell satisfies the measurement threshold.
  • the process 300 includes performing, based at least in part on determining that the cell measurement for the serving cell satisfies the measurement threshold, one or more second cell measurements for one or more second cells that are capable of supporting a plurality of RATs.
  • determining whether the cell measurement for the serving cell satisfies the measurement threshold includes determining that the cell measurement for the serving cell does not satisfy the measurement threshold, and selectively performing the one or more cell measurements for the one or more cells is based at least in part on determining that the cell measurement for the serving cell does not satisfy the measurement threshold.
  • the process 300 includes performing, based at least in part on determining that the cell measurement for the serving cell does not satisfy the measurement threshold, one or more second cell measurements for one or more second cells that are capable of supporting a plurality of RATs.
  • the cell measurement for the serving cell is an RSRP measurement.
  • Figure 3 shows example blocks of the process 300
  • the process 300 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Figure 3. Additionally, or alternatively, two or more of the blocks of the process 300 may be performed in parallel.
  • FIG. 4 is a diagram illustrating an example process 400 performed, for example, by a UE.
  • the process 400 is an example where a UE (for example, UE 120) performs selective dual connectivity cell measurements.
  • the process 400 may include determining whether a cell measurement for a serving cell of the UE satisfies a measurement threshold (block 410) .
  • the UE (such as by using receive processor 258, transmit processor 264, controller/processor 280, memory 282, another component, or a combination thereof) may determine whether a cell measurement for a serving cell of the UE satisfies a measurement threshold.
  • the process 400 may include performing one or more cell measurements for one or more first cells capable of supporting a single RAT and one or more second cells capable of supporting a plurality of RATs (block 420) .
  • the UE (such as by using receive processor 258, transmit processor 264, controller/processor 280, memory 282, another component, or a combination thereof) may perform one or more cell measurements for one or more first cells capable of supporting a single RAT and one or more second cells capable of supporting a plurality of RATs.
  • the process 400 may include performing one or more cell measurements for one or more cells capable of supporting a plurality of RATs (block 430) .
  • the UE (such as by using receive processor 258, transmit processor 264, controller/processor 280, memory 282, another component, or a combination thereof) may perform one or more cell measurements for one or more first cells capable of supporting a plurality of RATs.
  • the UE may refrain from performing one or more measurements for one or more cells capable of supporting a single RAT.
  • the process 400 may include additional aspects, such as any single aspect or any combination of aspects described in connection with one or more other processes described elsewhere herein.
  • Figure 4 shows example blocks of the process 400, in some aspects, the process 400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Figure 4. Additionally, or alternatively, two or more of the blocks of the process 400 may be performed in parallel.
  • the term “component” is intended to be broadly construed as hardware, firmware, or a combination of hardware and software.
  • a processor is implemented in hardware, firmware, or a combination of hardware and software.
  • the phrase “based on” is intended to be broadly construed to mean “based at least in part on. ”
  • satisfying a threshold may refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, or the like.
  • 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.
  • 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, for example, 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.
  • aspects 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.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des systèmes, des procédés et des appareils pour des mesures de cellule à double (et multi) connectivité. Selon un aspect, un équipement utilisateur (UE) peut effectuer une mesure de cellule d'une cellule de desserte (telle qu'une cellule maître dans une configuration à double ou multi-connectivité) et peut déterminer si la mesure de cellule satisfait ou non un seuil de mesure. L'UE peut effectuer des mesures de cellule pour des cellules capables de prendre en charge une technologie d'accès radio unique (RAT) et des cellules capables de prendre en charge une pluralité de RAT s'il est déterminé que la mesure de cellule satisfait le seuil de mesure, ce qui permet d'augmenter la quantité de cellules secondaires candidates pour l'UE. L'UE peut effectuer des mesures de cellule pour des cellules capables de prendre en charge une pluralité de RAT s'il est déterminé que la mesure de cellule ne satisfait pas le seuil de mesure, ce qui permet d'augmenter ou de hiérarchiser l'accès à des services NR 5G et de conserver les ressources de batterie de l'UE.
PCT/CN2020/087649 2020-04-29 2020-04-29 Mesures de cellule à double connectivité Ceased WO2021217469A1 (fr)

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CN102281552A (zh) * 2010-06-12 2011-12-14 华为技术有限公司 一种小区测量方法与装置
CN109151921A (zh) * 2017-06-16 2019-01-04 北京展讯高科通信技术有限公司 小区测量配置方法及装置
WO2019028908A1 (fr) * 2017-08-11 2019-02-14 Zte Corporation Procédés et dispositif informatique pour effectuer une communication sans fil avec de multiples noeuds d'un réseau sans fil
WO2019106575A1 (fr) * 2017-11-28 2019-06-06 Telefonaktiebolaget Lm Ericsson (Publ) Mesures de déclenchement dans un interfonctionnement lte-nr
US20200077325A1 (en) * 2018-08-30 2020-03-05 Samsung Electronics Co., Ltd. Method and apparatus for handling cell selection and re-selection in mr-dc system

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CN102281552A (zh) * 2010-06-12 2011-12-14 华为技术有限公司 一种小区测量方法与装置
CN109151921A (zh) * 2017-06-16 2019-01-04 北京展讯高科通信技术有限公司 小区测量配置方法及装置
WO2019028908A1 (fr) * 2017-08-11 2019-02-14 Zte Corporation Procédés et dispositif informatique pour effectuer une communication sans fil avec de multiples noeuds d'un réseau sans fil
WO2019106575A1 (fr) * 2017-11-28 2019-06-06 Telefonaktiebolaget Lm Ericsson (Publ) Mesures de déclenchement dans un interfonctionnement lte-nr
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