Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W76/00—Connection management
  • H04W76/20—Manipulation of established connections
  • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L5/00—Arrangements affording multiple use of the transmission path
  • H04L5/003—Arrangements for allocating sub-channels of the transmission path
  • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
  • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
  • H04W24/08—Testing, supervising or monitoring using real traffic
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
  • H04W52/02—Power saving arrangements
  • H04W52/0209—Power saving arrangements in terminal devices
  • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
  • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
  • H04W52/02—Power saving arrangements
  • H04W52/0209—Power saving arrangements in terminal devices
  • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
  • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
  • H04W52/02—Power saving arrangements
  • H04W52/0209—Power saving arrangements in terminal devices
  • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
• • 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

• the response may depend on various factors, including the time domain behavior of the PRS, the transmission point of the PRS, whether the PRS measurement is inter-frequency or intra-frequency or whether it requires measurement gaps, whether the PRS configuration is defined for a specific option, or whether the UE 1300 is configured to respond in a specific manner based on the received wake-up signal or based on configuration from the serving base station or location server, e.g., in WUS configuration or PRS configuration message, respectively.
• a user equipment configured for wireless communication and operating in a discontinuous reception (DRX) mode, includes means for receiving a positioning reference signal (PRS) configuration for receiving PRS ; means for receiving a wake-up signal from a serving base station indicating that the UE is not to wake up during a next ON time during a DRX cycle to monitor for communication signals, the communication signals comprising data signals or control signals or both; means for performing, in response to the PRS configuration and the wake-up signal, one of: remaining in a DRX sleep mode and not receiving the PRS; or transitioning to a DRX ON mode to receive the PRS but not monitoring for the communication signals; or transitioning to the DRX ON mode to receive the PRS and monitoring for the communication signals.
• PRS positioning reference signal
• FIGS. 2A and 2B illustrate example wireless network structures, according to various aspects of the disclosure.
• FIGS. 5A to 5C illustrate exemplary discontinuous reception (DRX) configurations, according to aspects of the disclosure.
• FIGs. 7A and 7B illustrate examples of a physical downlink control channel (PDCCH)-based wake-up signal with no downlink (DL) grant and with one instance of DL grant.
• PDCCH physical downlink control channel
• one of the frequencies utilized by the macro cell base stations 102 may be an anchor carrier (or “PCell”) and other frequencies utilized by the macro cell base stations 102 and/or the mmW base station 180 may be secondary carriers (“SCells”).
• PCell anchor carrier
• SCells secondary carriers
• the simultaneous transmission and/or reception of multiple carriers enables the UE 104/182 to significantly increase its data transmission and/or reception rates.
• two 20 MHz aggregated carriers in a multi-carrier system would theoretically lead to a two-fold increase in data rate (i.e., 40 MHz), compared to that attained by a single 20 MHz carrier.
• an eNB 224 may also be connected to the NGC 210 via NG-C 215 to the control plane functions 214 and NG-U 213 to user plane functions 212. Further, eNB 224 may directly communicate with gNB 222 via a backhaul connection 223. In some configurations, the New RAN 220 may only have one or more gNBs 222, while other configurations include one or more of both eNBs 224 and gNBs 222. Either gNB 222 or eNB 224 may communicate with UEs 204 (e.g., any of the UEs depicted in FIG. 1).
• Transmit processor 320 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS)) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS)).
• a transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 332a through 332t. Each modulator 332 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
• the available bandwidth may be divided into uniformly spaced orthogonal subcarriers 416 (also referred to as “tones” or “bins”).
• orthogonal subcarriers 416 may be grouped into a group of twelve (12) subcarriers.
• a resource of one OFDM symbol length in the time domain and one subcarrier in the frequency domain is referred to as a resource element (RE).
• RE resource element
• a PRS resource ID in a PRS resource set is associated with a single beam transmitted from a single TRP (where a TRP may transmit one or more beams). Note that this does not have any implications on whether the TRPs and beams from which signals are transmitted are known to the UE.
• FIGs. 7A and 7B illustrate respective an example 700 of a PDCCH-based WUS, where there is no DL grant (i.e., WUS indicates UE 104 is to remain in inactive mode) and an example 750 a PDCCH-based WUS, where there is an instance of a DL grant (i.e., WUS indicates that the UE 104 is to wake-up at the next ON mode of the DRX cycle).
• WUS indicates that the UE 104 is to wake-up at the next ON mode of the DRX cycle.
• FIG. 7A for example, the UE is in DRX mode 701 and illustrates a WUS monitoring occasion 702 during which a WUS 704 is received.
• the WUS 704 indicates that the UE 104 is not to wake up during the ON duration of the next DRX cycle. Consequently, as illustrated, UE 104 remains inactive during the ON duration of the next DRX cycle, which occurs after a pre-wakeup gap duration.
• FIG. 11 shows a flowchart for an exemplary method 1100 for wireless communication performed by a user equipment (UE), such as UE 104, operating in a discontinuous reception (DRX) mode and the interaction of a wake-up signal with DL PRS reception, in a manner consistent with disclosed implementation.
• UE user equipment
• DRX discontinuous reception
• the base station transmits to a location server an indication of the wake-up signal indicating that the UE is not to wake up during the next ON time during the DRX cycle to monitor for the communication signals, e.g., as discussed at stage 5 of FIG. 10.
• the base station may further transmit a DRX configuration to the UE, e.g., as discussed at stage 1 of FIG. 10.
• the base station may transmit the DRX configuration to the location server, e.g., as discussed at stage 1 of FIG. 10.
• the medium 1320 and/or memory 1304 may include a PRS configuration module 1326 that when implemented by the one or more processors 1302 configures the one or more processors 1302 to receive the PRS configuration for DL PRS transmissions from one or more base station via transceiver 1310, from a location server via an LPP message.
• the PRS configuration module 1326 may configure the one or more processors 1302 to receive a message from a location server indicating how to respond to a wake-up signal indicating to remain inactive during the next DRX ON duration if a DL PRS is configured to be received during that period.
• secondary memory may be operatively receptive of, or otherwise configurable to couple to a non-transitory computer readable medium 1320.
• the methods and/or apparatuses presented herein may take the form in whole or part of a computer readable medium 1320 that may include computer implementable code 1308 stored thereon, which if executed by one or more processors 1302 may be operatively enabled to perform all or portions of the example operations as described herein.
• Computer readable medium 1320 may be a part of memory 1304.
• the medium 1420 and/or memory 1404 may include a WUS configuration module 1424 that when implemented by the one or more processors 1402 configures the one or more processors 1402 to transmit a WUS configuration message via transceiver 1410, e.g., to a UE via an RRC message.
• the WUS configuration module 1424 may further configure the one or more processors to transmit the WUS configuration for the UE to a location server, via communications interface 1416.
• the wake-up signal is an indicator in a downlink control information (DCI) message
• DCI downlink control information
• the UE performs A) remaining in the DRX sleep mode and not receiving the PRS, B) transitioning to the DRX ON mode to receive the PRS but not monitoring for the communication signals, or C) transitioning to the DRX ON mode to receive the PRS and monitoring for the communication signals based on information associated with the wake-up signal in the DCI message.
• DCI downlink control information
• [0217] receive, via the transceiver, a positioning reference signal (PRS) configuration for receiving PRS;
• PRS positioning reference signal
• [0218] receive, via the transceiver, a wake-up signal from a serving base station indicating that the UE is not to wake up during a next ON time during a DRX cycle to monitor for communication signals, the communication signals comprising data signals or control signals or both;
• subset of PRS comprises a subset of PRS resources, PRS sets, PRS frequency layers, or PRS transmitted by transmission reception points (TRPs), or combination thereof.
• [0304] transmit to the location server, via the communications interface, an indication of when the UE is configured to monitor the wake-up signal and when the wake-up signal is ON or OFF.

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

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• 2020
  • 2020-12-18 WO PCT/US2020/066008 patent/WO2021154420A1/en not_active Ceased
  • 2020-12-18 EP EP20842487.9A patent/EP4098075A1/en active Pending
  • 2020-12-18 BR BR112022014294A patent/BR112022014294A2/pt unknown
  • 2020-12-18 CN CN202080094484.4A patent/CN115053628B/zh active Active
  • 2020-12-18 JP JP2022545887A patent/JP7622075B2/ja active Active
  • 2020-12-18 KR KR1020227025884A patent/KR20220133885A/ko active Pending
  • 2020-12-18 US US17/791,864 patent/US12262443B2/en active Active
  • 2020-12-22 TW TW109145580A patent/TWI897908B/zh active

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