WO2022082678A1 - Procédé d'activation de cellule secondaire, dispositif de terminal et dispositif de réseau - Google Patents

Procédé d'activation de cellule secondaire, dispositif de terminal et dispositif de réseau Download PDF

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Publication number
WO2022082678A1
WO2022082678A1 PCT/CN2020/123007 CN2020123007W WO2022082678A1 WO 2022082678 A1 WO2022082678 A1 WO 2022082678A1 CN 2020123007 W CN2020123007 W CN 2020123007W WO 2022082678 A1 WO2022082678 A1 WO 2022082678A1
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Prior art keywords
scell
dci format
terminal device
dormancy
value
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PCT/CN2020/123007
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English (en)
Chinese (zh)
Inventor
徐婧
王淑坤
徐伟杰
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202080103319.0A priority Critical patent/CN115943595A/zh
Priority to PCT/CN2020/123007 priority patent/WO2022082678A1/fr
Publication of WO2022082678A1 publication Critical patent/WO2022082678A1/fr

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    • 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

Definitions

  • the present application relates to the field of communications, and more particularly, to a method for activating a secondary cell, a terminal device, and a network device.
  • Carrier Aggregation enables the communication system to support a larger bandwidth and achieve a higher system peak rate through joint scheduling and use of resources on multiple Component Carriers (CC).
  • PCC Principal Component Carrier
  • SCC Secondary Component Carrier
  • Scell secondary Cell
  • the SCell is configured through RRC dedicated signaling, and the initial configuration state is in the deactivated state, in which data transmission and reception cannot be performed. After activation, the SCell switches from the deactivated state to the activated state to send and receive data.
  • embodiments of the present application provide a secondary cell activation method, a terminal device, and a network device, which can be used for rapid activation of a secondary cell Scell.
  • An embodiment of the present application provides a method for activating a secondary cell, which is applied to a terminal device, including:
  • the terminal device receives first indication information, where the first indication information includes downlink control information DCI, and the first indication information is used to indicate whether to activate the secondary cell Scell and/or send a reference signal RS;
  • the terminal device activates the Scell and/or sends the RS according to the first indication information, or does not activate the Scell and/or does not send the RS.
  • An embodiment of the present application provides a method for activating a secondary cell, which is applied to a network device, including:
  • the network device sends first indication information to the terminal device, where the first indication information includes downlink control information DCI, and the first indication information is used to instruct the terminal device to activate the secondary cell Scell and/or send a reference signal RS, or, The secondary cell Scell is not activated and/or the reference signal RS is not sent.
  • the first indication information includes downlink control information DCI
  • the first indication information is used to instruct the terminal device to activate the secondary cell Scell and/or send a reference signal RS, or, The secondary cell Scell is not activated and/or the reference signal RS is not sent.
  • the embodiment of the present application also provides a terminal device, including:
  • a receiving module configured to receive first indication information, where the first indication information includes downlink control information DCI, and the first indication information is used to indicate whether to activate the secondary cell Scell and/or send a reference signal RS;
  • An activation processing module configured to activate the Scell and/or send the RS according to the first indication information, or deactivate the Scell and/or not send the RS.
  • the embodiment of the present application also provides a network device, including:
  • a sending module configured to send first indication information to the terminal equipment, where the first indication information includes downlink control information DCI, and the first indication information is used to instruct the terminal equipment to activate the secondary cell Scell and/or send a reference signal RS , or, the secondary cell Scell is not activated and/or the reference signal RS is not sent.
  • An embodiment of the present application further provides a terminal device, including: a processor and a memory, where the memory is used to store a computer program, and the processor invokes and executes the computer program stored in the memory to execute the above method.
  • An embodiment of the present application further provides a network device, including: a processor and a memory, where the memory is used to store a computer program, and the processor invokes and executes the computer program stored in the memory to execute the above method.
  • An embodiment of the present application further provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device on which the chip is installed executes the above method.
  • Embodiments of the present application further provide a computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the above method.
  • Embodiments of the present application further provide a computer program product, including computer program instructions, wherein the computer program instructions cause a computer to execute the above method.
  • the embodiments of the present application also provide a computer program, the computer program enables a computer to execute the above method.
  • the network device tries to send the first indication information to the terminal, the indication information includes DCI, or the indication information is carried by the DCI, and the terminal device can determine to activate or not activate the secondary cell Scell according to the indication information, and further It can be determined whether to send the RS or not to send the RS.
  • the rapid activation process of the Scell can be realized, and the Scell activation delay can be reduced.
  • the control signaling overhead can be reduced, and the complexity of the terminal can be reduced , saves system resources, and also avoids synchronization between Scell activation and RS activation.
  • FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the concept effect of carrier aggregation CA.
  • FIG. 3 is a flowchart of a method for activating a Scell of a secondary cell according to an embodiment of the present application on the terminal side.
  • FIG. 4 is a flowchart of a method for activating a Scell of a secondary cell according to an embodiment of the present application on the network side.
  • FIG. 5 is a flowchart of a terminal-side Scell activation operation according to an embodiment of the present application.
  • FIG. 6 is a schematic structural block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural block diagram of a network device according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a chip according to an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • CDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • Wireless Fidelity Wireless Fidelity
  • WiFi fifth-generation communication
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA standalone
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device can be a station (STAION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • STAION, ST in the WLAN
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • a mobile phone Mobile Phone
  • a tablet computer Pad
  • a computer with a wireless transceiver function a virtual reality (Virtual Reality, VR) terminal device
  • augmented reality (Augmented Reality, AR) terminal Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network device may be a satellite or a balloon station.
  • the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc.
  • the network device may also be a base station set in a location such as land or water.
  • a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device (
  • the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • Pico cell Femto cell (Femto cell), etc.
  • These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • FIG. 1 schematically shows one network device 1100 and two terminal devices 1200.
  • the wireless communication system 1000 may include a plurality of network devices 1100, and the coverage of each network device 1100 may include other numbers terminal equipment, which is not limited in this embodiment of the present application.
  • the wireless communication system 1000 shown in FIG. 1 may also include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF). This is not limited in the application examples.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • corresponding may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.
  • the 5G system also supports carrier aggregation CA technology.
  • the carrier aggregation CA enables the NR system to support a larger bandwidth and achieve a higher system peak rate by jointly scheduling and using resources on multiple component carriers CC.
  • Aggregated carriers include continuous carrier aggregation and discontinuous carrier aggregation according to the continuity of the spectrum where the aggregated carriers are located; and according to whether the frequency bands where the aggregated carriers are located are the same, the aggregated carriers include intra-band carrier aggregation and inter-band inter-band carrier aggregation. band carrier aggregation.
  • PCC There is one and only one main carrier PCC, and the PCC can provide radio resource control (Radio Resource Control, RRC) signaling connection, non-access stratum (Non-Access Stratrum, NAS) functions, etc.
  • RRC Radio Resource Control
  • NAS Non-Access Stratrum
  • the Physical Uplink Control Channel (PUCCH) exists on the PCC and only exists on the PCC.
  • the secondary carrier SCC only provides additional radio resources.
  • PCC and SCC may also be collectively referred to as serving cells.
  • the aggregated carriers support at most 5, that is, the maximum bandwidth after aggregation is 100MHZ, and the aggregated carriers belong to the same base station. All aggregated carriers use the same Cell Radio Network Temporary Identifier (C-RNTI), and the base station can ensure that the C-RNTI does not collide in the cell where each carrier is located.
  • C-RNTI Cell Radio Network Temporary Identifier
  • the SCell is configured through RRC dedicated signaling, and the initial configuration state is a deactivated state, in which data transmission and reception cannot be performed. Then, it is necessary to activate the Scell through the MAC CE to transmit and receive data. From the perspective of the delay of Scell configuration and activation, the current Scell activation architecture has the problem of too long delay.
  • TRS tracking reference signal
  • a Scell needs to experience a long delay from activation to the actual transmission of data, and the Scell activation mechanism that relies on SSB will also increase the delay, which is increasingly unable to meet the low latency of 5G application scenarios. need.
  • the purpose of the embodiments of the present application is to introduce an activation mechanism for activating Scell based on DCI, to provide various DCI designs, and further, to provide an activation scheme for activating reference signal RS transmission.
  • an embodiment of the present application provides a method for activating a secondary cell, which is applied to a terminal device, and the method includes:
  • a terminal device receives first indication information, where the first indication information includes downlink control information DCI, and the first indication information is used to indicate whether to activate a secondary cell Scell and/or send a reference signal RS;
  • the terminal device activates the Scell and/or sends the RS according to the first indication information, or does not activate the Scell and/or does not send the RS.
  • the terminal device receives the first indication information sent by the network device, the indication information includes DCI, or the indication information is carried by the DCI, and the terminal device can perform the Scell activation or deactivation of the secondary cell according to the indication information.
  • the indication information can also instruct the terminal equipment to activate the sending process of the reference signal RS, or instruct not to send the RS, that is, based on the DCI Determining the transmission of the RS can be used as an activation mechanism for activating the transmission of the RS, wherein the RS can be used for the activation of the Scell of the secondary cell; optionally, whether to activate the Scell and whether to send the RS, the indication information can also indicate together, for example, according to the indication
  • the information terminal equipment can send RS when Scell is activated, or deactivate Scell and do not send RS; this mechanism of processing Scell activation and reference signal RS transmission activation at the same time can realize the rapid activation process of Scell, and because Scell is activated
  • Multiplexing the same indication information with the RS can not only reduce the system control signaling overhead, but also avoid the situation that the Scell activation and the RS activation are not
  • an embodiment of the present application further provides a method for activating a secondary cell, which is applied to a network device.
  • the method includes:
  • a network device sends first indication information to a terminal device, where the first indication information includes downlink control information DCI, and the first indication information is used to instruct the terminal device to activate the secondary cell Scell and/or send a reference signal RS, Alternatively, the secondary cell Scell is not activated and/or the reference signal RS is not sent.
  • the first indication information includes downlink control information DCI
  • the first indication information is used to instruct the terminal device to activate the secondary cell Scell and/or send a reference signal RS, Alternatively, the secondary cell Scell is not activated and/or the reference signal RS is not sent.
  • the network device tries to send the first indication information to the terminal, the indication information includes DCI, or the indication information is carried by the DCI, and the terminal device can determine to activate or not activate the secondary cell Scell according to the indication information, and further It can be determined whether to send the RS or not to send the RS, where the RS can be used for the activation of the Scell of the secondary cell, and the fast activation process of the Scell can be realized by using the embodiment of the present application, and the control signaling overhead can also be reduced when the Scell and the RS multiplex the same indication information , reduces the complexity of the terminal, saves system resources, and further prevents the Scell activation and the RS activation from being out of synchronization due to signaling loss.
  • the indication information includes DCI
  • the indication information is carried by the DCI
  • the terminal device can determine to activate or not activate the secondary cell Scell according to the indication information, and further It can be determined whether to send the RS or not to send the RS, where the RS can be used for
  • the reference signal RS may be a tracking reference signal TRS, a channel state information measurement reference signal CSI-RS, or other types of references applicable to the embodiments of the present application Signal.
  • the reference signal RS can be used for activation of the secondary cell Scell.
  • the first indication information includes a first DCI format
  • the first information field in the first DCI format is used to indicate whether to activate the Scell and/or send the RS .
  • the terminal device activates the Scell and/or sends or the RS; if the first information field is a second value value, the terminal device does not activate the Scell and/or does not send the RS.
  • the first DCI format includes DCI format 2_6 or a user-specific DCI format.
  • the first information field in the first DCI format includes a secondary cell dormancy indication SCell dormancy indication field.
  • the SCell dormancy indication field is used to configure the dormancy bandwidth part dormancy BWP; if the current Scell is in the deactivated state, the SCell dormancy
  • the indication field can be used for at least one of the following:
  • the SCell dormancy indication field is used to indicate that the Scell is activated
  • the SCell dormancy indication field is used to indicate that the RS is sent
  • the SCell dormancy indication field is used to indicate that the Scell is activated and the RS is sent.
  • the indication field can be interpreted according to the value (for example, 1 or 0) of the SCell dormancy indication field, as follows:
  • the terminal device configures the Scell as a dormancy BWP
  • the terminal device keeps the Scell deactivated and/or does not send the RS;
  • the terminal device configures the Scell as a non-dormancy BWP non-dormancy BWP;
  • the terminal device activates the Scell and/or sends the RS.
  • the first DCI format (such as DCI format 2-6) includes a first bit, and the first bit is used to indicate the purpose of the first DCI format;
  • the first DCI format is used to indicate the dormancy BWP configuration, and if the first bit is a second value, the first DCI format is used to indicate Whether to activate the Scell and/or send the RS.
  • the usage of the first DCI format may also be configured by higher layer signaling.
  • the first DCI format includes multiple bits, the multiple bits respectively correspond to multiple information fields in the first DCI format, the multiple bits The bits are respectively used to indicate the corresponding uses of the plurality of information fields;
  • the information field corresponding to the second bit is used to indicate the dormancy BWP configuration, and if the second bit in the plurality of bits is the first value If the bit is a second value, the information field corresponding to the second bit is used to indicate whether to activate the Scell and/or to generate the RS.
  • the uses of the multiple information fields in the first DCI format may also be configured by higher layer signaling.
  • the first indication information includes a second DCI format, where the second DCI format is used to configure a dormancy BWP; the second DCI format is multiplexed to indicate whether to activate the Scell and/or transmit the RS.
  • the second DCI format includes DCI format 1_1.
  • the terminal equipment determines that the purpose of the DCI format 1_1 is to configure the dormancy BWP;
  • the terminal device determines that the purpose of the DCI format 1_1 is to indicate activation of the Scell and/or the RS.
  • the state of the information field (frequency domain resource assignment field) is used to distinguish the dormancy BWP and the Scell activation, which can avoid increasing scheduling restrictions.
  • the first bit is a first value, it indicates that the SCell and/or the RS is deactivated; if the second bit is If the bit is the second value, it means that the SCell and/or the RS is activated.
  • the first indication information is multicast information or user-specific information.
  • the terminal device optionally, if the terminal device receives activation signaling for deactivating the first RS on the first carrier, the terminal device activates the first carrier and the first RS. RS.
  • the activation of the Scell depends on the TRS; if the terminal device does not activate the TRS, the activation of the Scell depends on synchronization Signal block SSB.
  • the first indication information includes a second DCI
  • the second DCI includes a dormancy BWP indication field
  • the dormancy BWP indication field is multiplexed to indicate whether to activate the Scell and/or sending the RS.
  • the dormancy BWP indication field is used to configure the dormancy BWP; if the current Scell is in the deactivated state, the dormancy BWP indication field It is used to indicate whether to activate the Scell and/or send the RS.
  • the indication content of the dormancy BWP indication field can be determined in the following manner:
  • the terminal device configures the Scell as a dormancy BWP
  • the terminal device configures the Scell as a non-dormancy BWP non-dormancy BWP;
  • the terminal device activates the Scell and/or sends the RS;
  • the terminal device keeps the Scell deactivated and/or does not send the RS.
  • the indication content of the dormancy BWP indication field can also be determined in the following manner:
  • the terminal device configures the Scell as a dormancy BWP
  • the terminal device keeps the Scell deactivated and/or does not send the RS;
  • the terminal device configures the Scell as a non-dormancy BWP
  • the terminal device activates the Scell and/or sends the RS.
  • This embodiment of the present application defines a method for activating Scell based on at least one of the above embodiments, wherein, to activate Scell based on DCI, the indication fields in the DCI (for example, the dormancy BWP indication field, etc.) can be reused, and the redundant fields in the DCI can also be used. As the Scell fast activation domain, the TRS transmission process can also be activated when the Scell is activated.
  • the indication fields in the DCI for example, the dormancy BWP indication field, etc.
  • the redundant fields in the DCI can also be used.
  • the terminal-side behavior may include the following two steps:
  • Step 1 The terminal receives Scell activation signaling; wherein the signaling may be DCI.
  • Step 2 The terminal performs an Scell activation operation; wherein activating the Scell means activating the corresponding carrier.
  • the Scell activation signaling can be used to activate the Scell and/or the reference signal RS.
  • the Scell activation signaling can be used to activate the Scell and the reference signal RS at the same time, wherein an identifier can be used to indicate whether to activate the Scell and the reference signal at the same time.
  • the identifier can be configured in advance through RRC signaling or MAC CE signaling, or the identifier can be included in the Scell activation signaling, where the RS can be used for the activation of the secondary cell Scell.
  • the reference signal and the Scell in the embodiment of the present application are activated by multiplexing the same signaling, which can reduce the Scell activation delay, reduce the control signaling overhead, and avoid the asynchrony between the Scell activation and the reference signal activation caused by the loss of signaling.
  • the reference signal RS may be TRS or CSI-RS, and may also be other applicable reference signals. Reference signals are sent in the Scell.
  • TRS tracking reference signal
  • CSI-RS CSI-RS
  • the existing DCI format or the existing domain may be reused, and in addition, control signaling specially used for activating the Scell may also be added.
  • the embodiment of the present application multiplexes the existing DCI format or the existing domain, which can reduce the standard workload, and can also reduce the number of DCI formats blindly detected by the terminal, and reduce the complexity of the terminal.
  • Embodiment 1 Multiplexing DCI format 2_6
  • the Scell fast activation indication is realized by multiplexing the secondary cell dormancy indication information field (Scell dormancy indication field) in the DCI format format 2_6.
  • the information field is interpreted as the dormancy BWP indication
  • This information field indicates Scell activation and/or deactivation
  • this information field indicates TRS activation and/or deactivation (or, in other words, sending TRS and/or not sending TRS);
  • This information field indicates Scell activation and/or deactivation, and TRS activation and/or deactivation, that is, the activation of Scell and TRS is indicated at the same time.
  • the terminal is configured with 5 secondary cell groups Scell group, each Scell group contains one Scell, corresponding to Scell1, Scell2, Scell3, Scell4 and Scell5 respectively. Among them, Scell 1, 3 and 5 are activated, and Scell 2 and 4 are deactivated.
  • Scell 1, 3 and 5 are activated, and Scell 2 and 4 are deactivated.
  • Scell1 and 3 are configured as dormancy BWP.
  • Scell5 is configured as non-dormancy BWP.
  • ⁇ "1" is interpreted as: Scell2 is configured to activate Scell and/or activate TRS.
  • Scell4 is configured to keep Scell deactivated and/or not send TRS.
  • the terminal is configured with 1 Scell group, and 1 Scell group includes 5 Scells, corresponding to Scell1, Scell2, Scell3, Scell4 and Scell5 respectively. Among them, Scell 1, 3 and 5 are activated, and Scell 2 and 4 are deactivated.
  • Scell1, 3 and 5 are active states, "1" is interpreted as: Scell1, 3 and 5 are configured as dormancy BWP.
  • Scell2 and 4 are deactivated, "1" is interpreted as: Scell2 and 4 are configured to keep Scell deactivated and/or not send TRS.
  • Scell1, 3 and 5 are active states, "0" is interpreted as: Scell1, 3 and 5 are configured as non-dormancy BWP.
  • Scell2 and 4 are deactivated, "0" is interpreted as: Scell2 and 4 are configured to activate Scell and/or activate
  • This embodiment of the present application also designs one or more bits in the DCI format 2-6 to indicate the purpose of the DCI. Two design methods or instruction methods are given below.
  • Design 1 One bit of DCI format 2_6 is used to indicate the purpose of the DCI format.
  • the one bit may be the first bit in DCI format 2_6.
  • DCI format 2_6 when the first bit of the DCI format 2_6 is 0, the DCI is at least used to indicate the dormancy BWP (see Table 1). When the first bit of DCI format 2_6 is 1, the DCI is used to indicate Scell activation and/or TRS activation (see Table 2). DCI format 2_6 contains multiple fields. Table 1 and Table 2 show “flag, block 1, block 2" in DCI format 2_6, where the flag "flag" is the first bit, and each block includes Wakeup indication "wakeup indication” and secondary cell dormancy indication "scell dormancy indication”.
  • this DCI is used to indicate dormancy BWP configuration 1
  • Wakeup indication 0 Scell group 1 dormancy off (secondary cell group 1 stops dormancy) 0 Scell group 2 dormancy off (secondary cell group 2 stops dormancy) 1 Scell group 3 dormancy on (secondary cell group 3 dormancy) 1 Scell group 4 dormancy on (secondary cell group 4 dormancy) 1 Scell group 5 dormancy on (secondary cell group 5 dormancy)
  • Design 2 Use multiple bits in DCI format 2_6 to indicate the usage of multiple fields in the DCI format.
  • an identification function similar to the above flag can also be implemented by means of high-level configuration (eg, RRC signaling). That is to say, whether the relevant indication field is used to configure the dormancy BWP, or used to indicate the state of reference signal and/or Scell activation, is configured by higher layers.
  • RRC signaling e.g, RRC signaling
  • the DCI format 2_6 is used for the dormancy BWP indication.
  • the DCI format 2_6 is used to indicate Scell activation and/or TRS activation.
  • Embodiment 2 Multiplexing the dormancy BWP indication field in the DCI format
  • the fast activation indication is performed by multiplexing an existing field in the DCI format, for example, multiplexing the dormancy BWP indication field.
  • the indication field is interpreted as Scell activation and/or TRS activation.
  • the indication field is interpreted as dormancy BWP configuration.
  • the terminal is configured with 5 Scell groups, and each Scell group contains one Scell, corresponding to Scell1, Scell2, Scell3, Scell4 and Scell5 respectively. Among them, Scell 1, 3 and 5 are activated, and Scell 2 and 4 are deactivated.
  • Scell 1, 3 and 5 are activated, and Scell 2 and 4 are deactivated.
  • Scell1 and 3 are configured as dormancy BWP.
  • Scell5 is configured as non-dormancy BWP.
  • ⁇ "1" is interpreted as: Scell2 is configured to activate Scell and/or activate TRS.
  • Scell4 is configured to remain deactivated and/or not to transmit TRS.
  • the terminal is configured with one Scell group, and one Scell group includes five Scells, corresponding to Scell1, Scell2, Scell3, Scell4 and Scell5 respectively. Among them, Scell 1, 3 and 5 are activated, and Scell 2 and 4 are deactivated.
  • Scells 1, 3, and 5 are active states, "1" is interpreted as: Scells 1, 3, and 5 are configured as dormancy BWPs.
  • Scell2 and 4 are deactivated (including not sending TRS), "1" is interpreted as: Scell2 and 4 are configured to keep Scell deactivated and/or not sending TRS.
  • Scells 1, 3, and 5 are active states, "0" is interpreted as: Scells 1, 3, and 5 are configured as non-dormancy BWPs.
  • Scell2 and 4 are deactivated, "0" is interpreted as: Scell2 and 4 are configured to activate Scell and/or activate TRS.
  • Example 3 Multiplexing of DCI format 1_1 for dormancy BWP configuration
  • the Scell fast activation indication is realized by multiplexing the DCI format 1_1 used for dormancy BWP configuration.
  • DCI format 1_1 is used to configure the dormancy BWP, which is actually a redundant design, that is, regardless of the bit Position 0 or set to 1, the meaning of the indication is the same.
  • the terminal device determines that the purpose of the DCI format 1_1 is to configure the dormancy BWP;
  • the terminal device determines that the purpose of the DCI format 1_1 is to indicate activation of Scell and/or RS.
  • the first bit is a first value (for example, 0)
  • it means to deactivate the SCell and/or the RS
  • the second bit is a second value (eg 1), indicating that the SCell and/or the RS are activated.
  • search space sets to monitor PDCCH for detection of DCI format 1_1,
  • the CRC of DCI format 1_1 is scrambled by a C-RNTI or a MCS-C-RNTI,and if
  • a one-shot HARQ-ACK request field is not present or has a'0'value,and if
  • the UE detects a DCI format 1_1 on the primary cell that does not include a carrier indicator field, or detects a DCI format 1_1 on the primary cell that includes a carrier indicator field with value equal to 0, and if
  • the UE considers the DCI format 1_1 as indicating SCell dormancy,not scheduling a PDSCH reception or indicating a SPS PDSCH release,and for transport block 1 interprets the sequence of fields of
  • - a'0'value for a bit of the bitmap indicate an active DL BWP,provided by dormantBWP-Id,for the UE for a corresponding activated SCell
  • the UE sets the active DL BWP to the indicated active DL BWP
  • the UE considers the DCI format 1_1 as indicating SCell and/or TRS activation,not scheduling a PDSCH reception or indicating a SPS PDSCH release,and for transport block 1 interprets the sequence of fields of
  • multiplexing the state of the dormancy BWP indication field to indicate dormancy BWP and Scell activation differently can avoid increasing scheduling restrictions; This occurs only after the Scell is activated, so multiplexing the same information field indicates that there will be no conflict of use.
  • the DCI dedicated to activating the Scell may be multicast signaling, or may be user-specific (UE-specific) signaling.
  • the multicast signaling may adopt at least one of the following designs:
  • the signaling is scrambled with an RNTI dedicated to Scell activation, such as "ScellActivation_RNTI";
  • the signaling includes multiple user-specific domains, that is, the location of each domain is configured to the user through the user-specific signaling.
  • Each user-specific domain may include at least one of the following:
  • One or more bits indicate carrier or carrier group information, which can be indexed or bitmap;
  • the user-specific signaling may adopt at least one of the following designs:
  • Reuse existing DCI formats such as DCI format 1_1, and use Scell activation-specific RNTI scrambling.
  • search space sets to monitor PDCCH for detection of DCI format 1_1,and if
  • the CRC of DCI format 1_1 is scrambled by a C-RNTI or a MCS-C-RNTI,and if
  • a one-shot HARQ-ACK request field is not present or has a'0'value,and if
  • the UE detects a DCI format 1_1 on the primary cell that does not include a carrier indicator field, or detects a DCI format 1_1 on the primary cell that includes a carrier indicator field with value equal to 0, and if
  • the UE considers the DCI format 1_1 as indicating SCell and/or TRS activation,not scheduling a PDSCH reception or indicating a SPS PDSCH release,and for transport block 1 interprets the sequence of fields of
  • the mode of recessive activation is also included.
  • the terminal receives RS activation signaling on an inactive carrier, such as A-TRS activation signaling
  • the terminal defaults that the carrier is activated, and further, the activation of the carrier is implemented based on the A-TRS.
  • the signaling may also be associated with activation of CSIRS for subsequent CSI reporting.
  • the time domain relationship between A-TRS and CSI-RS may be agreed or configured in advance.
  • the terminal when the terminal performs the Scell activation operation in step 2, it can perform, for example, time-frequency synchronization, automatic gain control (Automatic Gain Control, AGC) setting, channel state information (Channel State Information, CSI) measurement and reporting and so on.
  • AGC Automatic Gain Control
  • CSI Channel State Information
  • an embodiment of the present application further provides a terminal device 100, referring to FIG. 6, which includes:
  • a receiving module 110 configured to receive first indication information, where the first indication information includes downlink control information DCI, and the first indication information is used to indicate whether to activate the secondary cell Scell and/or send a reference signal RS;
  • An activation processing module 120 configured to activate the Scell and/or send the RS according to the first indication information, or deactivate the Scell and/or not send the RS.
  • the reference signal RS includes a tracking reference signal TRS and/or a channel state information measurement reference signal CSI-RS.
  • the first indication information includes a first DCI format
  • the first information field in the first DCI format is used to indicate whether to activate the Scell and/or send the RS .
  • the terminal device activates the Scell and/or sends or the RS;
  • the terminal device does not activate the Scell and/or does not send the RS.
  • the first DCI format includes DCI format 2_6 or a user-specific DCI format.
  • the first information field in the first DCI format includes a secondary cell dormancy indication SCell dormancy indication field.
  • the SCell dormancy indication field is used to configure the dormancy bandwidth part dormancy BWP;
  • the SCell dormancy indication field is used to instruct to activate the Scell; or, if the current Scell is in a deactivated state, the SCell dormancy indication field is used to instruct to send the SCell RS; or, if the current Scell is in a deactivated state, the SCell dormancy indication field is used to indicate that the Scell is activated and the RS is sent.
  • the terminal device configures the Scell as a dormancy BWP; if the SCell is in an active state The dormancy indication field is the first value, and the current Scell is in the deactivated state, the terminal device keeps the Scell deactivated and/or does not send the RS; if the SCell dormancy indication field is the second value, And the current Scell is in an active state, then the terminal device configures the Scell as a non-dormancy BWP non-dormancy BWP; if the SCell dormancy indication field is the second value and the current Scell is in a deactivated state, then the terminal The device activates the Scell and/or transmits the RS.
  • the first DCI format includes a first bit, and the first bit is used to indicate the usage of the first DCI format; wherein, if the first bit bit is the first value, then the first DCI format is used to indicate the dormancy BWP configuration, if the first bit is the second value, then the first DCI format is used to indicate whether to activate the Scell and/or The RS is sent.
  • the usage of the first DCI format is configured by higher layer signaling.
  • the first DCI format includes multiple bits, the multiple bits respectively correspond to multiple information fields in the first DCI format, the multiple bits The bits are respectively used to indicate the use of the corresponding multiple information fields; wherein, if the second bit in the multiple bits is the first value, the information field corresponding to the second bit is used for In order to indicate the dormancy BWP configuration; if the second bit in the plurality of bits is the second value, the information field corresponding to the second bit is used to indicate whether to activate the Scell and/or the occurrence of the RS.
  • the uses of the multiple information fields in the first DCI format are configured by higher layer signaling.
  • the first indication information includes a second DCI format, where the second DCI format is used to configure a dormancy BWP; the second DCI format is multiplexed to indicate whether to activate the Scell and/or transmit the RS.
  • the second DCI format includes DCI format 1_1.
  • the terminal device determines that the purpose of the DCI format 1_1 is to configure the dormancy BWP;
  • the terminal device determines that the purpose of the DCI format 1_1 is to indicate activation of the Scell and/or the RS.
  • the first bit is a first value, it indicates that the SCell and/or the RS is deactivated; if the second bit is If the bit is the second value, it means that the SCell and/or the RS is activated.
  • the first indication information is multicast information or user-specific information.
  • the terminal device optionally, if the terminal device receives activation signaling for deactivating the first RS on the first carrier, the terminal device activates the first carrier and the first RS. RS.
  • the activation of the Scell depends on the TRS; if the terminal device does not activate the TRS, the activation of the Scell depends on synchronization Signal block SSB.
  • an embodiment of the present application further provides a network device 200, referring to FIG. 7, which includes:
  • a sending module 210 configured to send first indication information to the terminal equipment, where the first indication information includes downlink control information DCI, and the first indication information is used to instruct the terminal equipment to activate the secondary cell Scell and/or send a reference signal RS, or, the secondary cell Scell is not activated and/or the reference signal RS is not sent.
  • the first indication information includes downlink control information DCI
  • the first indication information is used to instruct the terminal equipment to activate the secondary cell Scell and/or send a reference signal RS, or, the secondary cell Scell is not activated and/or the reference signal RS is not sent.
  • the terminal device 100 and the network device 200 in the embodiments of the present application can implement the corresponding functions of the terminal devices in the foregoing method embodiments.
  • the terminal device 100 and each module (submodule, unit, or component, etc.) in the network device 200 correspond
  • each module submodule, unit, or component, etc.
  • the functions described by the respective modules (submodules, units, or components, etc.) in the terminal device 100 and the network device 200 in the embodiments of the present application may be implemented by different modules (submodules, units, or components, etc.), It can also be implemented by the same module (sub-module, unit or component, etc.).
  • the first sending module and the second sending module can be different modules or the same module, both of which can implement the embodiments of the present application. the corresponding functions of the terminal equipment.
  • FIG 8 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application, wherein the communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may also include a memory 620 .
  • the processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices .
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of the antennas may be one or more.
  • the above-mentioned functions of the receiving module 110 and the transmitting module 210 may be implemented by the transceiver 630 or a receiver in the transceiver 630 .
  • the above-mentioned receiving module 110 and transmitting module 210 may also be implemented by two different transceivers.
  • the communication device 600 may be a terminal device in this embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the terminal device in each method in the embodiment of the present application, which is not repeated here for brevity.
  • An embodiment of the present application further provides a network device, the network device includes a plurality of units for implementing the above-mentioned method executed by the network device; or the network device includes a processor, a memory and a transceiver, involving steps of internal processing of the network device It is implemented by the processor by calling the program in the memory, and the part related to the communication between the network device and the terminal is implemented by the transceiver or by triggering the transceiver to execute the corresponding steps by the processor.
  • FIG. 9 is a schematic structural diagram of a chip 700 according to an embodiment of the present application, wherein the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720 .
  • the processor 710 may call and run a computer program from the memory 720 to implement the methods in the embodiments of the present application.
  • the memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .
  • the chip 700 may further include an input interface 730 .
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.
  • the chip can be applied to the terminal device in the embodiment of FIG. 6 of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For brevity, details are not repeated here. .
  • Chips applied to network equipment and terminal equipment can be the same chip or different chips.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • the general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.
  • the memory mentioned above may be either volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM).
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • FIG. 10 is a schematic block diagram of a communication system 800 according to an embodiment of the present application, where the communication system 800 includes a terminal device 810 and a network device 820 .
  • the terminal device 810 may be used to implement the corresponding functions implemented by the terminal device in the methods of the various embodiments of the present application
  • the network device 820 may be used to implement the corresponding functions implemented by the network device in the methods of the various embodiments of the present application. function. For brevity, details are not repeated here.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media.
  • the available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

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

Abstract

La présente demande concerne un procédé d'activation de cellule secondaire, un dispositif de terminal et un dispositif de réseau. Le procédé comprend les étapes suivantes : un dispositif de terminal reçoit des premières informations d'indication, les premières informations d'indication comprenant des informations de commande de liaison descendante (DCI) et les premières informations d'indication étant utilisées pour indiquer s'il faut activer ou non une cellule secondaire (SCell) et/ou envoyer ou non un signal de référence (RS) ; et selon les premières informations d'indication, le dispositif de terminal active la SCell et/ou envoie le signal RS, ou le dispositif de terminal s'abstient d'activer la SCell et/ou s'abstient d'envoyer le signal RS. Les modes de réalisation de la présente demande permettent de réaliser l'activation rapide d'une SCell.
PCT/CN2020/123007 2020-10-22 2020-10-22 Procédé d'activation de cellule secondaire, dispositif de terminal et dispositif de réseau WO2022082678A1 (fr)

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CN202080103319.0A CN115943595A (zh) 2020-10-22 2020-10-22 辅小区激活方法、终端设备和网络设备
PCT/CN2020/123007 WO2022082678A1 (fr) 2020-10-22 2020-10-22 Procédé d'activation de cellule secondaire, dispositif de terminal et dispositif de réseau

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Citations (4)

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CN109391986A (zh) * 2017-08-11 2019-02-26 华为技术有限公司 一种辅小区激活方法、接入网设备、通信装置以及系统
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CN111106912A (zh) * 2018-10-29 2020-05-05 中国移动通信有限公司研究院 一种辅小区控制方法、网络侧设备及终端

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