WO2019157616A1 - Procédés, appareils et systèmes de transmission d'un signal de réveil dans une communication sans fil - Google Patents

Procédés, appareils et systèmes de transmission d'un signal de réveil dans une communication sans fil Download PDF

Info

Publication number
WO2019157616A1
WO2019157616A1 PCT/CN2018/076604 CN2018076604W WO2019157616A1 WO 2019157616 A1 WO2019157616 A1 WO 2019157616A1 CN 2018076604 W CN2018076604 W CN 2018076604W WO 2019157616 A1 WO2019157616 A1 WO 2019157616A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
wireless communication
downlink control
detect
determining
Prior art date
Application number
PCT/CN2018/076604
Other languages
English (en)
Inventor
Weiwei Yang
Bo Dai
Huiying Fang
Kun Liu
Xianming Chen
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to CN201880087657.2A priority Critical patent/CN111656822B/zh
Priority to PCT/CN2018/076604 priority patent/WO2019157616A1/fr
Publication of WO2019157616A1 publication Critical patent/WO2019157616A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving 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 master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave 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. TPC [Transmission Power Control], power saving 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 master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving 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
    • 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 disclosure relates generally to wireless communications and, more particularly, to methods, apparatus and systems for transmitting a wake up signal in a wireless communication.
  • Machine type communication also known as machine to machine (M2M) communication
  • MTC Machine type communication
  • M2M machine to machine
  • GSM Global System of Mobile communication
  • LTE-A Long term evolution
  • NB-IoT narrowband-Internet Of Things
  • An NB-IOT system focuses on low-complexity and low-throughput radio access technologies.
  • the main research directions include: improved indoor coverage, massive low-throughput user equipment support, low latency sensitivity, ultra-low device cost, low device power consumption, and network architecture.
  • a network or base station can transmit pages to both idle and connected terminals (User Equipment, UE) .
  • the paging process may be triggered by a core network to notify a certain UE to receive a paging request, and may also be triggered by the eNB to notify the system information update.
  • the process of acquiring the paging message by the terminal is as follows: the terminal detects a corresponding Physical Downlink Control Channel (PDCCH) at a paging occasion (PO) to determine whether the Physical Downlink Shared Channel (PDSCH) indicated by the PDCCH carries paging message or an indication of changes of the system message corresponding to the terminal.
  • PDCCH Physical Downlink Control Channel
  • PO paging occasion
  • the terminal does not detect the corresponding PDCCH at the PO, it indicates that no paging message corresponding to the terminal exists at this PO. The terminal will not detect again until the next PO. The terminal attempts to decode the PDCCH according to all the downlink control information formats. If it cannot decode the PDCCH, the terminal continues to try on the next sub-frame until the PDCCH is decoded. This cost unnecessary power of the terminals.
  • exemplary embodiments disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings.
  • exemplary systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these embodiments are presented by way of example and not limitation, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of the present disclosure.
  • a method performed by a wireless communication node comprises: transmitting a first signal to a plurality of wireless communication devices, wherein the first signal indicates whether a plurality of downlink control signals associated with the first signal is transmitted; and determining at least one second signal based on the first signal, wherein each second signal indicates whether a single downlink control signal associated with the second signal is transmitted.
  • a method performed by a wireless communication node comprises: transmitting a third signal to a plurality of wireless communication devices, wherein the third signal indicates whether at least one downlink control signal is associated with the third signal, wherein a presence of the third signal is monitored by at least one of the plurality of wireless communication devices; and notifying the plurality of wireless communication devices of validity information by a higher layer signaling, wherein the validity information is at least one of: back off position information and a transmit power of the third signal.
  • a method performed by a wireless communication device comprises: receiving a first signal from a wireless communication node; determining, based on the first signal, whether to detect at least one downlink control signal associated with the first signal and corresponding to the wireless communication device; and determining, based on the first signal, whether to detect at least one second signal, wherein each second signal indicates whether to detect a single downlink control signal associated with the second signal and corresponding to the wireless communication device.
  • a method performed by a wireless communication device comprises: receiving validity information from a wireless communication node, wherein the validity information is received via a higher layer signaling and comprises information related to a back off position ; detecting the downlink control signal associated with the back off position; receiving a third signal from the wireless communication node outside the back off position, wherein the third signal is used to indicate whether to detect at least one downlink control signal corresponding to the wireless communication device.
  • a method performed by a wireless communication device comprises: receiving validity information from a wireless communication node via a higher layer signaling, wherein the validity information comprises information related to a transmit power of a third signal; and determining, based on the validity information, whether to detect the third signal, wherein the third signal is used to indicate whether to detect at least one downlink control signal corresponding to the wireless communication device.
  • a method performed by a wireless communication device comprises: receiving a fourth signal from a wireless communication node; and determining, based on the fourth signal, whether to detect the third signal, wherein the third signal is used to indicate whether to detect at least one downlink control signal corresponding to the wireless communication device.
  • a wireless communication node configured to carry out a disclosed method in some embodiment is disclosed.
  • a wireless communication device configured to carry out a disclosed method in some embodiment is disclosed.
  • a non-transitory computer-readable medium having stored thereon computer-executable instructions for carrying out a disclosed method in some embodiment is disclosed.
  • FIG. 1 illustrates an exemplary communication network in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure.
  • FIG. 2 illustrates a block diagram of a base station (BS) , in accordance with some embodiments of the present disclosure.
  • FIG. 3 illustrates a flow chart for a method performed by a BS for transmitting a wake up signal in a wireless communication, in accordance with some embodiments of the present disclosure.
  • FIG. 4 illustrates a block diagram of a user equipment (UE) , in accordance with some embodiments of the present disclosure.
  • UE user equipment
  • FIG. 5 illustrates a flow chart for a method performed by a UE for detecting a wake up signal in a wireless communication, in accordance with some embodiments of the present disclosure.
  • FIG. 6 illustrates an exemplary method for transmitting two types of wake up signals to a UE, in accordance with an embodiment of the present disclosure.
  • FIG. 7 illustrates an exemplary method for transmitting one type of wake up signals to a UE, in accordance with an embodiment of the present disclosure.
  • FIG. 8 illustrates an exemplary method for receiving two types of wake up signals, in accordance with an embodiment of the present disclosure.
  • FIG. 9 illustrates an exemplary method for transmitting three types of wake up signals to a UE, in accordance with an embodiment of the present disclosure.
  • a typical wireless communication network includes one or more base stations (typically known as a “BS” ) that each provides geographical radio coverage, and one or more wireless user equipment devices (typically known as a “UE” ) that can transmit and receive data within the radio coverage.
  • BS base stations
  • UE wireless user equipment devices
  • the present disclosure provides methods for transmitting at least one wake up signal (WUS) that can indicate whether PDCCH signals associated with the wake up signal are to be transmitted.
  • the BS transmits a signal, e.g. a WUS, indicating detection of a PDCCH, before each paging occasion (PO) or PDCCH.
  • the terminal detects the WUS first and determines whether to detect the PDCCH according to the detection result.
  • WUS is detected with a wake up state
  • the terminal detects the PDCCH corresponding to the WUS; otherwise, the terminal does not detect the PDCCH.
  • An introduction of the WUS signal reduces the number of times the PDCCH is detected by the terminal, thereby saving the power consumption of the terminal.
  • the methods are applicable to any wireless communication process where a paging signal or another signal that is monitored and/or needs to be detected by terminals.
  • the methods disclosed in the present teaching can be implemented in a wireless communication network, where a BS and a UE can communicate with each other via a communication link, e.g., via a downlink radio frame from the BS to the UE or via an uplink radio frame from the UE to the BS.
  • a communication link e.g., via a downlink radio frame from the BS to the UE or via an uplink radio frame from the UE to the BS.
  • a BS in the present disclosure can be referred to as a network side and can include, or be implemented as, a next Generation Node B (gNB) , an E-UTRAN Node B (eNB) , a Transmission/Reception Point (TRP) , an Access Point (AP) , etc.; while a UE in the present disclosure can be referred to as a terminal and can include, or be implemented as, a mobile station (MS) , a station (STA) , etc.
  • gNB next Generation Node B
  • eNB E-UTRAN Node B
  • TRP Transmission/Reception Point
  • AP Access Point
  • a UE in the present disclosure can be referred to as a terminal and can include, or be implemented as, a mobile station (MS) , a station (STA) , etc.
  • MS mobile station
  • STA station
  • a BS and a UE may be described herein as non-limiting examples of “wireless communication nodes, ” and “wireless communication devices” respectively, which can practice the methods disclosed herein and may be capable of wireless and/or wired communications, in accordance with various embodiments of the present disclosure.
  • FIG. 1 illustrates an exemplary communication network 100 in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure.
  • the exemplary communication network 100 includes a base station (BS) 101 and a plurality of UEs, UE 1 110, UE 2 120 ... UE 3 130, where the BS 101 can communicate with the UEs according to wireless protocols. These UEs have been selected into the cellular network of the BS 101 based on a cell selection process. When the BS 101 has data or any information to be transmitted to any UE, the BS 101 can start a paging process.
  • BS base station
  • the paging process may be triggered by the BS 101 to notify a UE to receive a paging request, or be triggered by the BS 101 to notify a system information update to the UEs 110, 120, 130.
  • a paging message is scheduled by PDCCH information scrambled by a Paging-Radio Network Temporary Identifier (RNTI) , and is transmitted in a PDSCH. Since a PDCCH is relatively long, it costs lots of unnecessary power for the terminal to blindly detect the PDCCH signal during a paging process. As such, the BS 101 can broadcast a wake up signal to indicate a detection of a PDCCH to the UEs 110, 120, 130.
  • RNTI Paging-Radio Network Temporary Identifier
  • Each UE detects the wake up signal first and then determines whether to detect the PDCCH according to the detection result.
  • a wake up signal may correspond to two states: a wake up state and a sleep state. In this case, the UE will only detect the PDCCH when the wake up signal is detected and has a wake up state.
  • there are different types of wake up signals depending on a relationship between the wake up signal and its corresponding PDCCH signal (s) , according to various embodiments.
  • FIG. 2 illustrates a block diagram of a base station (BS) 200, in accordance with some embodiments of the present disclosure.
  • the BS 200 is an example of a device that can be configured to implement the various methods described herein.
  • the BS 200 includes a housing 240 containing a system clock 202, a processor 204, a memory 206, a transceiver 210 comprising a transmitter 212 and receiver 214, a power module 208, a first signal configurator 220, a second signal configurator 222, a validity information generator 224, and a downlink control signal generator 226.
  • the system clock 202 provides the timing signals to the processor 204 for controlling the timing of all operations of the BS 200.
  • the processor 204 controls the general operation of the BS 200 and can include one or more processing circuits or modules such as a central processing unit (CPU) and/or any combination of general-purpose microprocessors, microcontrollers, digital signal processors (DSPs) , field programmable gate array (FPGAs) , programmable logic devices (PLDs) , controllers, state machines, gated logic, discrete hardware components, dedicated hardware finite state machines, or any other suitable circuits, devices and/or structures that can perform calculations or other manipulations of data.
  • CPU central processing unit
  • DSPs digital signal processors
  • FPGAs field programmable gate array
  • PLDs programmable logic devices
  • the memory 206 which can include both read-only memory (ROM) and random access memory (RAM) , can provide instructions and data to the processor 204. A portion of the memory 206 can also include non-volatile random access memory (NVRAM) .
  • the processor 204 typically performs logical and arithmetic operations based on program instructions stored within the memory 206. The instructions (a.k.a., software) stored in the memory 206 can be executed by the processor 204 to perform the methods described herein.
  • the processor 204 and memory 206 together form a processing system that stores and executes software.
  • “software” means any type of instructions, whether referred to as software, firmware, middleware, microcode, etc. which can configure a machine or device to perform one or more desired functions or processes. Instructions can include code (e.g., in source code format, binary code format, executable code format, or any other suitable format of code) .
  • the instructions when executed by the one or more processors, cause the processing system to perform the various functions described herein.
  • the transceiver 210 which includes the transmitter 212 and receiver 214, allows the BS 200 to transmit and receive data to and from a remote device (e.g., the BS or another UE) .
  • An antenna 250 is typically attached to the housing 240 and electrically coupled to the transceiver 210.
  • the BS 200 includes (not shown) multiple transmitters, multiple receivers, and multiple transceivers.
  • the antenna 250 is replaced with a multi-antenna array 250 that can form a plurality of beams each of which points in a distinct direction.
  • the transmitter 212 can be configured to wirelessly transmit packets having different packet types or functions, such packets being generated by the processor 204.
  • the receiver 214 is configured to receive packets having different packet types or functions
  • the processor 204 is configured to process packets of a plurality of different packet types.
  • the processor 204 can be configured to determine the type of packet and to process the packet and/or fields of the packet accordingly.
  • the BS 200 may start a paging process by sending to terminals or UEs a wake up signal to indicate one or more downlink control signals (e.g. PDCCH signals) associated with the wake up signal is transmitted to the UEs.
  • the first signal configurator 220 may generate and configure a first signal that is a wake up signal to indicate whether a plurality of downlink control signals, e.g. PDCCH signals, associated with the first signal is transmitted.
  • the first signal configurator 220 can transmit, via the transmitter 212, the first signal to a plurality of UEs.
  • the first signal configurator 220 may notify a plurality of UEs of position information of the first signal via a higher layer signaling. Then the first signal configurator 220 can transmit the first signal periodically to the plurality of UEs based on the position information that includes a transmission period of the first signal.
  • a presence of the first signal may be monitored by at least one of the plurality of UEs.
  • the first signal configurator 220 can determine a first quantity of the plurality of downlink control signals associated with the first signal, and notify the plurality of UEs of the first quantity via a higher layer signaling.
  • the first signal configurator 220 may also determine a second quantity of downlink control signals to be transmitted within the transmission period of the first signal.
  • the first signal configurator 220 sends both the first quantity and the second quantity to the second signal configurator 222 for determining whether to transmit a second wake up signal.
  • the first signal configurator 220 can determine an enabling period of the first signal, and notify the plurality of UEs of the enabling period of the first signal via a higher layer signaling.
  • the first signal can indicate a transmission of any downlink control signal within the enabling period.
  • the first signal configurator 220 sends both the enabling period and the transmission period of the first signal to the second signal configurator 222 for determining whether to transmit a second wake up signal.
  • the first signal configurator 220 can configure the first signal as a synchronization signal, such that the first signal is used for synchronization of the plurality of UEs. Because the first signal is periodically transmitted, it can serve as an indicator and a synchronization signal at the same time. Since the indicator does not need to carry as much information as a downlink control signal, e.g. a PDCCH signal, the first signal or any wake up signal is shorter than the downlink control signal. As such, a UE can detect a shorter signal first to determine whether a detection of a longer signal is needed, to save power consumption compared to detecting the longer signal directly.
  • a downlink control signal e.g. a PDCCH signal
  • the second signal configurator 222 in this example can determine at least one second signal based on the first signal.
  • Each second signal is a wake up signal that indicates whether a single downlink control signal associated with the second signal is transmitted.
  • a presence of each second signal may also be monitored by at least one of the plurality of UEs.
  • the second signal Since the second signal also serves as an indicator, it does not need to carry as much information as the downlink control signal associated with it, the second signal is shorter than the downlink control signal associated with it. As such, a UE can detect a shorter signal first to determine whether a detection of a long signal is needed, to save power consumption compared to detecting a longer signal directly.
  • the BS 200 can modify the ratio between the first signals and the second signals, to further control and balance the power consumption of the UEs due to detection of the downlink control signals and the resource consumption for the BS 200 to transmit the wake up signals.
  • the first signal configurator 220 determines that there will be no or little change of the paging message or system message for a next time period, the first signal configurator 220 can configure a longer enabling period of the first signal compared to the transmission period of the first signal. In this case, there will be no or much less second signal compared to the first signals, so as to save the transmission resource at the BS 200.
  • the first signal configurator 220 when the first signal configurator 220 determines that there will be many or frequent changes of the paging message or system message for a next time period, the first signal configurator 220 can configure a shorter enabling period of the first signal compared to the transmission period of the first signal. In this case, there will be more second signals compared to the first signals, which saves power consumption of the UEs due to detection of the downlink control signals within the enabling period. This is because when the first signal has a wake up state; it indicates that at least one of the downlink control signals within the enabling period carries paging information, while the UEs need to detect all of the downlink control signals within the enabling period.
  • the second signal configurator 222 can receive both the first quantity and the second quantity from the first signal configurator 220, and determine whether to transmit the second wake up signal based on a comparison of the first quantity and the second quantity. After comparing the two quantities, if the first quantity is smaller than the second quantity, the second signal configurator 222 can determine that there is one or more downlink control signals to be transmitted within the transmission period of the first signal and not indicated by the first signal. As such, the second signal configurator 222 can generate and configure one second signal corresponding to each downlink control signal to be transmitted within the transmission period of the first signal and not indicated by the first signal, and transmit each second signal to the UEs to indicate a transmission of the single downlink control signal corresponding to the second signal.
  • the second signal configurator 222 can receive both the enabling period and the transmission period of the first signal from the first signal configurator 220, and determine whether to transmit the second wake up signal based on a comparison of the enabling period and the transmission period. After comparing the two periods, if the transmission period is longer than the enabling period, the second signal configurator 222 can determine that there is one or more downlink control signals to be transmitted within the transmission period of the first signal and not indicated by the first signal.
  • the second signal configurator 222 can generate and configure one second signal corresponding to each downlink control signal to be transmitted within the transmission period of the first signal and not indicated by the first signal, and transmit each second signal to the UEs to indicate a transmission of the single downlink control signal corresponding to the second signal.
  • the validity information generator 224 in this example may be optional and can generate validity information , e.g. the first signal generated by the first signal configurator 220, or the second signal generated by the second signal configurator 222. Since each wake up signal is an indicator for a UE to determine whether to detect a long signal, e.g. the downlink control signal, it is important for the UE to know whether the received wake up signal is valid or not.
  • the validity information is to be used by the plurality of UEs to determine whether to detect the wake up signal.
  • the validity information generator 224 may notify the plurality of UEs of the validity information of the wake up signal by a higher layer signaling.
  • the validity information comprises information related to back off position information.
  • the validity information to indicate UE detects the at least one downlink control signal directly associated with back off position information.
  • the validity information comprises information related to a transmit power of the wake up signal. For example, a UE can determine a path loss based on a received power of the wake up signal and the transmit power of the wake up signal. Based on the path loss, the UE can determine when the validity of the wake up signal is lower than a predetermined threshold. If so, the UE may detect the downlink control signal (s) directly regardless of the indication of the wake up signal.
  • the downlink control signal generator 226 in this example may generate the downlink control signals, e.g. PDCCH signals, and transmit them, via the transmitter 212, to the UEs.
  • each downlink control signal carries a first message by a PDCCH signal that indicates a physical downlink shared channel (PDSCH) signal carrying a second message.
  • the first message includes at least one of: scheduling information of PDSCH and scheduling information of physical uplink shared channel (PUSCH)
  • the second message is at least : a paging message .
  • the downlink control signal generator 226 generates the plurality of downlink control signals associated with the first signal based on the first quantity determined by the first signal configurator 220, and generates the downlink control signals to be transmitted within the transmission period of the first signal based on the second quantity determined by the first signal configurator 220. In response to transmitting each second signal by the second signal configurator 222, the downlink control signal generator 226 transmits, via the transmitter 212, within the transmission period of the first signal, the single downlink control signal that is associated with the second signal and outside the plurality of downlink control signals associated with the first signal.
  • the downlink control signal generator 226 generates a plurality of downlink control signals based on the enabling period of the first signal configured by the first signal configurator 220, and transmits the plurality of downlink control signals to the UEs within or outside the enabling period of the first signal according to the first signal.
  • the downlink control signal generator 226 transmits, via the transmitter 212, within the transmission period of the first signal, the single downlink control signal that is associated with the second signal and outside the plurality of downlink control signals associated with the first signal.
  • the power module 208 can include a power source such as one or more batteries, and a power regulator, to provide regulated power to each of the above-described modules in FIG. 2.
  • a power source such as one or more batteries
  • a power regulator to provide regulated power to each of the above-described modules in FIG. 2.
  • the power module 208 can include a transformer and a power regulator.
  • the various modules discussed above are coupled together by a bus system 230.
  • the bus system 230 can include a data bus and, for example, a power bus, a control signal bus, and/or a status signal bus in addition to the data bus. It is understood that the modules of the BS 200 can be operatively coupled to one another using any suitable techniques and mediums.
  • processor 204 can implement not only the functionality described above with respect to the processor 204, but also implement the functionality described above with respect to the first signal configurator 220.
  • each of the modules illustrated in FIG. 2 can be implemented using a plurality of separate components or elements.
  • FIG. 3 illustrates a flow chart for a method 300 performed by a BS, e.g. the BS 200 in FIG. 2, for transmitting a wake up signal in a wireless communication, in accordance with some embodiments of the present disclosure.
  • the BS configures a first signal to indicate whether a plurality of downlink control signals associated with the first signal is transmitted to a plurality of UEs.
  • the BS transmits the first signal to the plurality of UEs.
  • the BS transmits at operation 306 the plurality of downlink control signals to the plurality of UEs based on the first signal.
  • the BS determines, based on the first signal, and transmits at least one second signal each indicating whether a single downlink control signal is transmitted.
  • the BS transmits the single downlink control signal corresponding to each second signal transmitted.
  • the first signal and the second signal may be wake up signals that can wake up a UE to detect downlink control signals for paging or system information update.
  • FIG. 4 illustrates a block diagram of a UE 400, in accordance with some embodiments of the present disclosure.
  • the UE 400 is an example of a device that can be configured to implement the various methods described herein.
  • the UE 400 includes a housing 440 containing a system clock 402, a processor 404, a memory 406, a transceiver 410 comprising a transmitter 412 and a receiver 414, a power module 408, a first signal analyzer 420, a second signal analyzer 422, a validity information determiner 424, and a downlink control signal analyzer 426.
  • the system clock 402, the processor 404, the memory 406, the transceiver 410 and the power module 408 work similarly to the system clock 202, the processor 204, the memory 206, the transceiver 210 and the power module 208 in the BS 200.
  • An antenna 450 or a multi-antenna array 450 is typically attached to the housing 440 and electrically coupled to the transceiver 410.
  • the first signal analyzer 420 in this example may receive, via the receiver 414, a first signal from a BS.
  • the first signal may be a wake up signal.
  • the first signal analyzer 420 can determine whether to detect at least one downlink control signal associated with the first signal and corresponding to the UE 400.
  • the first signal analyzer 420 can determine, based on the first signal, whether to detect at least one second signal. Each second signal indicates whether to detect a single downlink control signal associated with the second signal and corresponding to the UE 400.
  • the first signal analyzer 420 may receive position information of the first signal via a higher layer signaling from the BS. The first signal is transmitted periodically by the BS based on the position information that includes a transmission period of the first signal. In one embodiment, the first signal analyzer 420 can receive a first quantity of the at least one downlink control signal associated with the first signal via a higher layer signaling, and receive or determine a second quantity of downlink control signals to be transmitted within the transmission period of the first signal and corresponding to the UE 400. The first signal analyzer 420 can determine whether to detect the at least one second signal based on a comparison of the first quantity and the second quantity, and send the determination result to the second signal analyzer 422.
  • the first signal analyzer 420 can send the first quantity and the second quantity to the second signal analyzer 422 for determining whether to detect the at least one second signal.
  • the first signal analyzer 420 receive an enabling period of the first signal via a higher layer signaling from the BS. The first signal analyzer 420 can determine whether to detect the at least one second signal based on a comparison of the transmission period and the enabling period, and send the determination result to the second signal analyzer 422.
  • the first signal analyzer 420 can send the transmission period and the enabling period to the second signal analyzer 422 for determining whether to detect the at least one second signal.
  • the UE 400 can achieve synchronization with the BS based on the first signal. Because the first signal is periodically transmitted, it can serve as both an indicator and a synchronization signal at the same time. Since the indicator does not need to carry as much information as a downlink control signal, e.g. a PDCCH signal, the first signal or any wake up signal is shorter than the downlink control signal. As such, the UE 400 can detect a shorter signal first to determine whether a detection of a longer signal is needed, to save power consumption compared to detecting the longer signal directly.
  • a downlink control signal e.g. a PDCCH signal
  • the second signal analyzer 422 in this example receives, via the receiver 414, at least one second signal from the BS. Each second signal may be a wake up signal. By analyzing each second signal, the second signal analyzer 422 can determine, based on the second signal, whether to detect a single downlink control signal that is associated with the second signal and outside the at least one downlink control signal associated with the first signal.
  • the second signal analyzer 422 may detect the at least one second signal based on the first signal, in response to that the first quantity is smaller than the second quantity. In another embodiment, the second signal analyzer 422 may detect the at least one second signal based on the first signal, in response to that the transmission period of the first signal is longer than the enabling period of the first signal.
  • the validity information determiner 424 in this example can receive validity information from the BS, e.g. via a higher layer signaling.
  • the validity information comprises information related to a back off position of a downlink control signal.
  • the validity information determiner 424 can determine, based on the validity information, a detection of the downlink control signal by the UE 400 at the back off position.
  • the validity information comprises information related to a transmit power of a wake up signal, e.g. the first signal or the second signal.
  • the validity information determiner 424 can determine, based on the validity information, whether to detect wake up signal that is used to indicate whether to detect at least one downlink control signal corresponding to the UE 400.
  • the validity information determiner 424 can determine if the received wake up signal is detected to indicate whether to detect the corresponding downlink control signal (s) .
  • the validity information determiner 424 can instruct the first signal analyzer 420 and/or the second signal analyzer 422 to receive or analyze the first or second wake up signals respectively. Otherwise, when the validity information determiner 424 determines that the wake up signal is not detected, the validity information determiner 424 can instruct the downlink control signal analyzer 426 to directly detect and analyze the downlink control signals.
  • the validity information determiner 424 may receive a signal, e.g. a validity check signal, from the BS, and determine, based on the validity check signal, whether to the wake up signal.
  • the validity information determiner 424 may obtain position information of the validity check signal via a higher layer signaling or based on a predetermined protocol. Based on the validity check signal, the validity information determiner 424 can determine if the received wake up signal is detected to indicate whether to detect the corresponding downlink control signal (s) .
  • the downlink control signal analyzer 426 in this example can receive and analyze the downlink control signals in response to a determination from the first signal analyzer 420 or the second signal analyzer 422 to detect the downlink control signals associated with the first or second signal.
  • each downlink control signal carries a first message by a PDCCH signal that indicates a PDSCH signal carrying a second message.
  • the first message includes at least one of: scheduling information of PDSCH and scheduling information of PUSCH, while the second message is at least: a paging message.
  • the various modules discussed above are coupled together by a bus system 430.
  • the bus system 430 can include a data bus and, for example, a power bus, a control signal bus, and/or a status signal bus in addition to the data bus. It is understood that the modules of the UE 400 can be operatively coupled to one another using any suitable techniques and mediums.
  • processor 404 can implement not only the functionality described above with respect to the processor 404, but also implement the functionality described above with respect to the first signal analyzer 420.
  • each of the modules illustrated in FIG. 4 can be implemented using a plurality of separate components or elements.
  • FIG. 5 illustrates a flow chart for a method 500 performed by a UE, e.g. the UE 400 in FIG. 4, for detecting a wake up signal in a wireless communication, in accordance with some embodiments of the present disclosure.
  • the UE receives from a BS a first signal and analyzes the first signal.
  • the UE determines whether to detect at least one downlink control signal associated with the first signal and corresponding to the UE.
  • the UE detects at operation 506 the at least one downlink control signal based on the first signal.
  • the UE determines at operation 508 whether to detect at least one second signal based on the first signal.
  • the UE determines whether to detect a single downlink control signal associated with the second signal based on each second signal.
  • the UE detects the single downlink control signal associated with the second signal based on each second signal.
  • FIG. 6 illustrates an exemplary method for transmitting two types of wake up signals to a UE, in accordance with an embodiment of the present disclosure.
  • the base station transmits wake up signals as discussed above, which can reduce the overhead of resources corresponding to the signals and reduce the congestion on other downlink channels or signals, in addition to effectively reducing the power consumption of the terminal.
  • the base station transmits a signal specifically as follows: the base station determines the transmission of a first signal 610 according to the transmission status of PDCCHs on the N POs, and determines the transmission of a second signal 620 according to the transmission status of the PDCCH on one PO.
  • the base station transmits the PDCCH corresponding to the signal.
  • the first signal indicates the transmission of the PDCCH on the N POs; and the second signal indicates the transmission of the PDCCH on one PO.
  • each PO corresponds to a starting position of a paging PDCCH.
  • the base station transmits the first signal according to the transmission position of the first signal.
  • the transmission position of the first signal includes a transmission period 602, with a fixed or predetermined offset; or includes a transmission period and an offset.
  • the transmission position is transmitted to the terminal through signaling, e.g. a system information block (SIB) signaling or a radio resource control (RRC) signaling dedicated to the cell.
  • SIB system information block
  • RRC radio resource control
  • the first signal is transmitted periodically.
  • the transmission position is transmitted to the terminal by signaling.
  • the base station determines the transmission of the first signal 610 according to the transmission condition of the PDCCH on the N POs, where the N POs are POs in an enabling period 604 of the first signal 610.
  • the length of the enabling period is transmitted to the terminal by signaling, e.g. a SIB signaling or a RRC signaling dedicated to the cell.
  • the first signal corresponds to PDCCHs on N POs.
  • the transmission of the second signal 620 is determined according to the transmission of the first signal. Specifically, only when the number of POs 606 included in the first signal transmission period 602 is greater than N, the second signal 620 is transmitted before each of the remaining POs after the enabling period 604.
  • FIG. 7 illustrates an exemplary method for transmitting one type of wake up signals to a UE, in accordance with the embodiment 1c. If the value of N is equal to the number of POs 706 included in the transmission period 702 of the first signal 710, the second signal is not transmitted; or if the length of the transmission period 702 of the first signal 710 is equal to the enabling period 704, the second signal is not transmitted. As such, the transmission of the second signal depends on the configuration of the first signal, and each second signal corresponds to one PO.
  • the base station when the base station transmits a signal, e.g. a wake up signal, the signal is composed of a Zadoff-Chu (ZC) sequence and a Hadamard sequence.
  • ZC Zadoff-Chu
  • a root sequence index of the ZC sequence is determined according to a cell ID.
  • the Hadamard sequence has an index being any value other than 128 * (0, 1/4, 1/2, 1) .
  • 96 taking 96 as an example, specifically:
  • PCI is the index of the cell in which the signal is located. If the signal corresponds to two states, the two states correspond to two Hadamard sequences respectively.
  • the base station when the base station transmits a signal, e.g. a wake up signal, the signal is composed of a ZC sequence and a Hadamard sequence.
  • a root sequence index of the ZC sequence is determined according to a cell ID.
  • the Hadamard sequence is a fixed sequence with the sequence index being any k values other than 128 * (0, 1/4, 1/2, 1) .
  • each Hadamard sequence corresponds to a group of terminals. That is, the terminals corresponding to the signal is divided into k groups, where each group corresponds to a Hadamard sequence. In one example, it is assumed that there are six UEs in the same PO, and the six UEs are divided into two groups: Group 1 and Group 2. The grouping is performed according to the UE index.
  • sequence index 1 of the Hadamard sequence corresponds to Group 1
  • sequence index 2 of the Hadamard sequence corresponds to Group 2.
  • sequence index 1 and the sequence index 2 are 128 *3/4, and 128 *1/8, respectively.
  • the base station transmits a signal, e.g. a wake up signal
  • the signal is a ZC sequence.
  • the root sequence index of the ZC sequence is determined according to the cell ID, where the length of the ZC sequence is 127. As such:
  • the signal when the base station transmits a signal, e.g. a wake up signal, the signal is a ZC sequence.
  • the root sequence index of the ZC sequence is determined according to the cell ID, where the length of the ZC sequence is 127.
  • the ZC sequence corresponds to k cyclic shifts.
  • Each cyclic shift corresponds to a group of terminals. That is, the terminals corresponding to the signal are divided into k groups, where each group corresponds to a cyclic shift, such that the k cyclic shifts have a maximum interval between each pair of two cyclic shifts.
  • cyclic shift 1 of the ZC sequence corresponds to Group 1
  • cyclic shift 2 of the ZC sequence corresponds to Group 2.
  • the interval between the cyclic shift 1 and the cyclic shift 2 is maximized.
  • the cyclic shift 1 is calculated by 127 * (1/4) and then rounded up
  • the cyclic shift 2 is calculated by 127 * (3/4) and then rounded up.
  • the interval between the two cyclic shifts is 127 *1/2, which is the maximum cyclic shift interval.
  • the base station when the base station transmits a signal, e.g. a wake up signal, the signal is composed of a ZC sequence, a Hadamard sequence and a PN sequence.
  • the root sequence index of the ZC sequence is determined according to the cell ID.
  • the Hadamard sequence is a fixed sequence with a sequence index being any one value other than 128 * (0, 1/4, 1/2, 1) .
  • the terminals corresponding to the signal are divided into k groups, where each group corresponds to an initial value of a PN sequence. If the signal corresponds to two states, the two states correspond to two Hadamard sequences respectively.
  • the signal when the base station transmits a signal, e.g. a wake up signal, the signal is composed of a ZC sequence, a Hadamard sequence and a PN sequence.
  • the root sequence index of the ZC sequence and a first initial value of the PN sequence are determined according to the cell ID.
  • the Hadamard sequence is a fixed sequence with a sequence index being any one value other than 128 * (0, 1/4, 1/2, 1) .
  • the terminals corresponding to the signal are divided into k groups, where each group corresponds to a second initial value of the PN sequence. If the signal corresponds to two states, the two states correspond to two Hadamard sequences respectively.
  • the initial value of the PN sequence is determined based on the first initial value and the second initial value of the PN sequence.
  • the signal length is notified to the UE through signaling, e.g. a system information block (SIB) signaling or a radio resource control (RRC) signaling dedicated to the cell.
  • SIB system information block
  • RRC radio resource control
  • the length of the signal transmitted by the base station is 16.
  • the signaling overhead depends on the maximum possible length of the signal. For example, when the maximum length is 256, the signaling has 8 bits.
  • the signaling will be 00001111.
  • the signaling overhead depends on the possible values of the signal length. For example, when the possible values are [1, 2, 4, 8, 12, 16, 32, 64] , the signaling has 3 bits.
  • the signaling will be 101, as shown below in the following table.
  • the base station when the base station transmits a signal, e.g. a wake up signal, the base station notifies, by signaling, the UE of a relative length of the signal compared to the length of the PDCCH search space at the PO.
  • the signaling overhead depends on the possible values of the signal length. For example, when the possible values are Rmax* [1/64, 1/32, 1/16, 1/8, 1/4, 1/2, 1] , the signaling has 3 bits. When the length of the signal is 16, the signaling is 010, as shown below in the following table.
  • the possible values are Rmax /16 * [1/4, 1/2, 1] , such that the signaling has 2 bits.
  • the signaling is 10, as shown below in the following table.
  • FIG. 8 illustrates an exemplary method for receiving two types of wake up signals, in accordance with an embodiment of the present disclosure.
  • the terminal detects a signal, e.g. a first wake up signal 810 or a second wake up signal 820.
  • the terminal determines the PDCCH detection according to the detected signal. Specifically, the terminal determines the PDCCH detection on M POs 806 according to the detected first signal, and the terminal determines the corresponding PDCCH detection on the single PO 806 according to the detected second signal.
  • M is a positive integer greater than or equal to 1.
  • the M POs are POs that are within the enabling period 804 of the first signal 810 and corresponding to the terminal.
  • the first signal 810 indicates the transmission of the PDCCH on multiple POs
  • the second signal 820 indicates the transmission of the PDCCH on one single PO.
  • the terminal obtains the transmission position of the first signal based on a higher layer signaling, e.g. a SIB signaling or a RRC signaling dedicated to the cell.
  • the transmission position of the first signal includes a transmission period 802, with a fixed or predetermined offset, or includes a transmission period 802 and an offset.
  • the first signal 810 is transmitted periodically and the transmission position is obtained based on signaling.
  • the terminal determines the detection of PDCCHs on the M POs according to the detected first signal, where the M POs are POs corresponding to the UE in the enabling period of the first signal.
  • the terminal obtains the length of the enabling period of the first signal by signaling, e.g. a SIB signaling or a RRC signaling dedicated to the cell.
  • the number M is the number of POs corresponding to the UE in the enabling period of the first signal.
  • the terminal determines the detection of the second signal according to the first signal transmission period. Specifically, only when the number of POs included in the first signal transmission period is greater than M, the second signal corresponding to each PO remaining in the transmission period is detected.
  • each second signal corresponds to one single PO, and the transmission of the second signal depends on the transmission period of the first signal and the M value.
  • the first signal corresponds to two states: a wake up state and a sleep state.
  • the terminal determines, according to the detected first signal, that the detection of the PDCCH on the M POs, which includes: when the first signal detected by the terminal is a wake up state, the terminal detects the PDCCHs on the M POs; and when the first signal detected by the terminal is a sleep state, the terminal does not detect PDCCHs on M POs; where the M POs are POs in the enabling period of the first signal.
  • the terminal obtains the length of the enabling period of the first signal by signaling, e.g. a SIB signaling or a RRC signaling dedicated to the cell.
  • the second signal corresponds to one state: the wake up state.
  • the terminal determines, according to the detected second signal, a detection of the PDCCH on the corresponding PO, which includes: when the terminal detects the second signal, the terminal detects the PDCCH on the corresponding PO; and when the terminal cannot detect the second signal, the terminal does not detect the PDCCH on the corresponding PO.
  • the terminal may also obtain synchronization information based on detection of the first signal.
  • the first signal corresponds to two states: a wake up state and a synchronization state.
  • the terminal determines, according to the detected first signal, a detection of the PDCCH on the M POs, which includes: when the first signal detected by the terminal is a wake up state, the terminal detects PDCCHs on the M POs; and when the first signal detected by the terminal is a synchronization state, the terminal obtains the synchronization information through the first signal and the terminal does not detect the PDCCHs on the M POs; wherein the M POs are POs in the enabling period of the first signal, and the terminal obtains the length of the enabling period of the first signal by signaling.
  • the first signal can be used as a synchronization signal at the same time as being a wake up signal.
  • the terminal may also obtain synchronization information based on detection of the first signal.
  • the terminal when the first signal detected by the terminal is a wake up state, the terminal detects PDCCHs on the M POs; when the first signal detected by the terminal is a sleep state, the terminal does not detect the PDCCH on M POs; or when the terminal does not detect the first signal, the terminal does not detect the PDCCH on M POs; wherein the M POs are POs in the enabling period of the first signal, and the terminal obtains the length of the enabling period of the first signal by signaling.
  • the first signal can be used as a synchronization signal at the same time as being a wake up signal.
  • the terminal obtains the signal length according to the signaling.
  • the length of the signal transmitted by the base station is 16.
  • the UE learns that the signal length is 16.
  • the signaling received by the UE is 101 and the possible values of the signal length are as shown in the following table, then the UE learns that the signal length is 16.
  • the terminal obtains the signal length according to the signaling and the length (Rmax) of the searching space on the PO.
  • the base station configures the channel or signal, and the terminal determines whether to detect the signal by detecting the channel or signal.
  • FIG. 9 illustrates an exemplary method for transmitting three types of wake up signals to a UE, in accordance with an embodiment of the present disclosure.
  • the base station configures a back off PO 930 and transmits the back off PO 930 to the terminal by signaling.
  • the terminal may directly detect the PDCCH at the configured back off PO position.
  • it is assumed that the back off PO 930 configured by the base station is located in the enabling period 904 of the first signal 910, then the terminal does not determine whether to detect the PDCCH on the PO according to the detection result of the first signal 910, but directly detects the PDCCH.
  • the base station configures the back off PO and transmits the back off PO to the terminal by signaling, which may include: the base station transmits a transmission period of the back off PO to the terminal through signaling; or the base station transmits the transmission period and an offset of the back off PO to the terminal through signaling; or the base station transmits to the terminal the back off PO enabled sub-frame by signaling.
  • the signaling includes H bits, where each bit indicates whether the corresponding sub-frame is a back off PO enabled sub-frame or back off PO started sub-frame. For example, it is assumed that the signaling includes 10 bits, and a corresponding state is 1000000000.
  • the sub-frame with the sub-frame index of 0 is the back off PO or a start sub-frame of the back off PO.
  • the signaling may be a SIB signaling or a RRC signaling specific to this terminal.
  • the base station can configure a back off PO to assist the terminal to determine the validity of the signal, e.g. the first or second wake up signal.
  • the base station configures a detection position for a third signal and transmits the third signal to the terminal through signaling, where the third signal corresponds to two states: a wake up state and a sleep state.
  • the terminal detects the third signal at the configured detection position, the terminal determines that its own coverage has not changed and continues to perform subsequent detection; when the terminal does not detect the third signal at the configured detection position, the terminal determines that its own coverage has changed and will perform subsequent detections with a lower detection standard.
  • the terminal can reduce the threshold for successful signal detection.
  • the base station can configure a third signal and its detection position to assist the terminal to determine the validity of the signal, e.g. the first or second wake up signal, where the third signal is always transmitted at the configured detection position.
  • the base station configures a detection position for a third signal and transmits the third signal to the terminal through signaling, where the third signal corresponds to two states: a wake up state and a synchronization state.
  • the terminal detects the third signal at the configured detection position, the terminal determines that its own coverage has not changed and continues to perform subsequent detection; when the terminal does not detect the third signal at the configured detection position, the terminal determines that its own coverage has changed and will perform subsequent detections with a lower detection standard.
  • the terminal can reduce the threshold for successful signal detection.
  • the base station can configure a third signal and its detection position to assist the terminal to determine the validity of the signal, e.g. the first or second wake up signal, where the third signal is always transmitted at the configured detection position.
  • the base station configures parameters to help the terminal to determine whether to detect signal, e.g. the first or second wake up signal.
  • the base station transmits a signal transmission power P to the terminal through signaling.
  • the terminal determines whether to (a) directly detect the PDCCH or to (b) detect the signal first and then determine the PDCCH according to the signal detection result, based on the received signal and the transmission power P notified by signaling.
  • the terminal determines a current signal-to-noise ratio range of the terminal according to the signal transmission power P and the measured downlink path loss, and detects the signal under the signal-to-noise ratio range.
  • the terminal When the probability of detecting the signal is lower than a predetermined threshold, the terminal directly detects the PDCCH; otherwise, the terminal detects the signal first, and then determines the PDCCH detection according to the signal detection result.
  • the base station configures the detection parameter, e.g. the transmission power of the signal, to assist the terminal to determine the validity of the signal.
  • the base station transmits a relative transmission power of the signal to the terminal through signaling.
  • the relative transmission power of the signal is a ratio of a transmit power of the signal relative to a transmit power of a preset signal, where the preset signal may be a narrowband reference signal (NRS) or a cell-specific reference signal (CRS) .
  • the base station configures the detection parameter, e.g. the relative transmission power of the signal, to assist the terminal to determine the validity of the signal.
  • the base station transmits a range of signal repetition times under each coverage level to the terminal through signaling.
  • the terminal determines whether to (a) directly detect the PDCCH or to (b) detect the signal first and then determine the PDCCH according to the signal detection result, based on the received signal and the range of signal repetition times under each coverage level notified by signaling.
  • the terminal obtains a range of signal repetition times according to a known coverage and the range of signal repetition times under each coverage level notified by signaling. If the number of repetitions of the received signal exceeds the obtained range of signal repetition times, the terminal directly detects the PDCCH; otherwise, the terminal detects the signal first, and then determines the detection of the PDCCH according to the signal detection result.
  • the known coverage comprises at least one of the following: a measured coverage, and coverage determined when the terminal accessed the system last time.
  • the base station transmits the RSRP (reference signal received power) /RSRQ (reference signal received quality) ranges corresponding to different ranges of repetition times of the signal to the terminal through signaling.
  • the terminal determines whether to (a) directly detect the PDCCH or to (b) detect the signal first and then determine the PDCCH according to the signal detection result, based on the received signal and the RSRP /RSRQ ranges corresponding to different ranges of repetition times of the signal notified by signaling.
  • the terminal obtains a range of signal repetition times, based on a measured RSRP /RSRQ value and the RSRP /RSRQ ranges corresponding to different ranges of repetition times of the signal notified by signaling. If the number of repetitions of the received signal exceeds the obtained range of signal repetition times, the terminal directly detects the PDCCH; otherwise, the terminal detects the signal first, and then determines the detection of the PDCCH according to the signal detection result.
  • the base station transmits a range of signal repetition times to the terminal through signaling.
  • the terminal determines whether to (a) directly detect the PDCCH or to (b) detect the signal first and then determine the PDCCH according to the signal detection result, based on the received signal and the range of signal repetition times obtained by signaling. In one example, if the number of repetitions of the received signal exceeds the obtained range of signal repetition times, the terminal directly detects the PDCCH; otherwise, the terminal detects the signal first, and then determines the detection of the PDCCH according to the signal detection result.
  • the base station transmits the RSRP (reference signal received power) /RSRQ (reference signal received quality) range corresponding to the signal to the terminal through signaling.
  • the terminal determines whether to (a) directly detect the PDCCH or to (b) detect the signal first and then determine the PDCCH according to the signal detection result, based on the received signal and the RSRP /RSRQ range corresponding to the signal notified by signaling. In one example, if a measured RSRP /RSRQ value exceeds the obtained RSRP /RSRQ range corresponding to the signal, the terminal directly detects the PDCCH; otherwise, the terminal detects the signal first, and then determines the detection of the PDCCH according to the signal detection result.
  • any reference to an element herein using a designation such as “first, “ “second, “ and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
  • any of the various illustrative logical blocks, modules, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as "software” or a "software module) , or any combination of these techniques.
  • a processor, device, component, circuit, structure, machine, module, etc. can be configured to perform one or more of the functions described herein.
  • IC integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the logical blocks, modules, and circuits can further include antennas and/or transceivers to communicate with various components within the network or within the device.
  • a general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine.
  • a processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein.
  • Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another.
  • a storage media can be any available media that can be accessed by a computer.
  • such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • module refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various modules are described as discrete modules; however, as would be apparent to one of ordinary skill in the art, two or more modules may be combined to form a single module that performs the associated functions according embodiments of the present disclosure.
  • memory or other storage may be employed in embodiments of the present disclosure.
  • memory or other storage may be employed in embodiments of the present disclosure.
  • any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present disclosure.
  • functionality illustrated to be performed by separate processing logic elements, or controllers may be performed by the same processing logic element, or controller.
  • references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.

Landscapes

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

Abstract

L'invention concerne des procédés, un appareils et des systèmes de transmission d'un signal de réveil dans une communication sans fil. Selon un mode de réalisation, l'invention concerne un procédé mis en œuvre par un nœud de communication sans fil. Le procédé consiste à : transmettre un premier signal à une pluralité de dispositifs de communication sans fil, le premier signal indiquant si une pluralité de signaux de commande de liaison descendante associés au premier signal est transmise ; et déterminer au moins un second signal sur la base du premier signal, chaque second signal indiquant si un seul signal de commande de liaison descendante associé au second signal est transmis.
PCT/CN2018/076604 2018-02-13 2018-02-13 Procédés, appareils et systèmes de transmission d'un signal de réveil dans une communication sans fil WO2019157616A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880087657.2A CN111656822B (zh) 2018-02-13 2018-02-13 用于在无线通信中传输唤醒信号的方法、装置和系统
PCT/CN2018/076604 WO2019157616A1 (fr) 2018-02-13 2018-02-13 Procédés, appareils et systèmes de transmission d'un signal de réveil dans une communication sans fil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/076604 WO2019157616A1 (fr) 2018-02-13 2018-02-13 Procédés, appareils et systèmes de transmission d'un signal de réveil dans une communication sans fil

Publications (1)

Publication Number Publication Date
WO2019157616A1 true WO2019157616A1 (fr) 2019-08-22

Family

ID=67619704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/076604 WO2019157616A1 (fr) 2018-02-13 2018-02-13 Procédés, appareils et systèmes de transmission d'un signal de réveil dans une communication sans fil

Country Status (2)

Country Link
CN (1) CN111656822B (fr)
WO (1) WO2019157616A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023287421A1 (fr) * 2021-07-15 2023-01-19 Zeku, Inc. Appareil et procédé de réception discontinue dans un réseau sans fil
WO2023284620A1 (fr) * 2021-07-13 2023-01-19 华为技术有限公司 Procédé et appareil de communication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017052596A1 (fr) * 2015-09-25 2017-03-30 Maruti Gupta Radio d'activation à faible consommation d'énergie pour des dispositifs mobiles
EP3216308A1 (fr) * 2014-11-04 2017-09-13 Qualcomm Incorporated Réception discontinue de faible puissance avec un second récepteur
EP3240348A1 (fr) * 2014-12-23 2017-11-01 LG Electronics Inc. Procédé de configuration et de programmation d'une sous-trame partielle dans un système d'accès sans fil prenant en charge une bande sans licence, et dispositif associé
EP3257321A1 (fr) * 2015-03-13 2017-12-20 Huawei Technologies Co., Ltd. Appareil et procédés dans un réseau de communication sans fil permettant une réception discontinue et une réception de données

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019086516A1 (fr) * 2017-11-03 2019-05-09 Sony Mobile Communications Inc. Signal de réveil en deux parties

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3216308A1 (fr) * 2014-11-04 2017-09-13 Qualcomm Incorporated Réception discontinue de faible puissance avec un second récepteur
EP3240348A1 (fr) * 2014-12-23 2017-11-01 LG Electronics Inc. Procédé de configuration et de programmation d'une sous-trame partielle dans un système d'accès sans fil prenant en charge une bande sans licence, et dispositif associé
EP3257321A1 (fr) * 2015-03-13 2017-12-20 Huawei Technologies Co., Ltd. Appareil et procédés dans un réseau de communication sans fil permettant une réception discontinue et une réception de données
WO2017052596A1 (fr) * 2015-09-25 2017-03-30 Maruti Gupta Radio d'activation à faible consommation d'énergie pour des dispositifs mobiles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023284620A1 (fr) * 2021-07-13 2023-01-19 华为技术有限公司 Procédé et appareil de communication
WO2023287421A1 (fr) * 2021-07-15 2023-01-19 Zeku, Inc. Appareil et procédé de réception discontinue dans un réseau sans fil

Also Published As

Publication number Publication date
CN111656822A (zh) 2020-09-11
CN111656822B (zh) 2022-05-13

Similar Documents

Publication Publication Date Title
AU2017212617B2 (en) Indicating additional PBCH symbols in unlicensed small cell environment
KR102424043B1 (ko) 동기화 시그널링을 포함하는 웨이크 업 신호를 송신하기 위한 통신 장치 및 방법들
US20180242277A1 (en) Paging user equipments on a shared communication medium
WO2016165070A1 (fr) Procédés et dispositifs pour émettre des informations de liaison ascendante, émettre et recevoir des informations de liaison descendante, et planification de système
CN111436096B (zh) 分组唤醒信号的发送方法及装置
WO2019160496A1 (fr) Indication de regroupement de dispositifs sans fil à l'aide d'un signal d'activation
CN111869273B (zh) 用于监视寻呼消息的方法和设备
CN104838722B (zh) 通信方法、用户设备和基站
CN106797673B (zh) 实现无线电通信网络中的中继的装置、网络节点和方法
US10757634B2 (en) Broadcasting system information in a wireless communication system
US20200120624A1 (en) Method and Apparatus for using Indication Information of Time Domain Resource Allocation
US9363751B2 (en) Communication device, communication method, communication system, and base station
CN110536230A (zh) 唤醒信号发送、接收方法、装置、基站、终端和存储介质
JP2024101023A (ja) 無線通信におけるシステム情報のスケジューリングおよび伝送のための方法、装置、およびシステム。
WO2019157616A1 (fr) Procédés, appareils et systèmes de transmission d'un signal de réveil dans une communication sans fil
US20200322877A1 (en) Methods, apparatus and systems for indicating a configuration of access control information in a wireless communication
CN111345080B (zh) 系统信息更新方法、接入网设备及终端设备
US20220400466A1 (en) Methods, apparatus and systems for configuring a paging resource in a wireless communication
US20230224861A1 (en) Methods, apparatus and systems for scheduling and transmission of system information in a wireless communication
US20230021951A1 (en) Methods, apparatus and systems for determining a resource for wake-up signal transmissions
KR20240041863A (ko) 포지셔닝 정보를 위한 사이드 링크 통신을 위한 시스템들 및 방법들

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18906565

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 13.01.2021)

122 Ep: pct application non-entry in european phase

Ref document number: 18906565

Country of ref document: EP

Kind code of ref document: A1