WO2023050146A1 - Procédé de communication sans fil, dispositif terminal et dispositif de réseau - Google Patents

Procédé de communication sans fil, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2023050146A1
WO2023050146A1 PCT/CN2021/121704 CN2021121704W WO2023050146A1 WO 2023050146 A1 WO2023050146 A1 WO 2023050146A1 CN 2021121704 W CN2021121704 W CN 2021121704W WO 2023050146 A1 WO2023050146 A1 WO 2023050146A1
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WIPO (PCT)
Prior art keywords
reference signal
cluster
terminal device
information
time unit
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PCT/CN2021/121704
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English (en)
Chinese (zh)
Inventor
王淑坤
徐婧
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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 CN202180099009.0A priority Critical patent/CN117461277A/zh
Priority to PCT/CN2021/121704 priority patent/WO2023050146A1/fr
Publication of WO2023050146A1 publication Critical patent/WO2023050146A1/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 embodiments of the present application relate to the communication field, and more specifically, relate to a wireless communication method, a terminal device, and a network device.
  • the secondary cell In the New Radio (NR) system, the secondary cell (Secondary Cell, SCell) can be configured through radio resource control (Radio Resource Control, RRC) dedicated signaling, and the initial configuration state of the SCell is the deactivated state. Data cannot be sent or received in this state. Data can be sent and received only after the SCell is activated through Media Access Control Control Element (MAC CE) signaling. Further, a tracking reference signal (Tracking reference signal, TRS) can be used to assist the terminal device to quickly activate the SCell. However, the TRS transmission may collide with the uplink transmission, which will lead to the failure of the TRS transmission. How to identify and deal with the conflict between the TRS transmission and the uplink transmission is an urgent problem to be solved.
  • RRC Radio Resource Control
  • TRS tracking reference signal
  • Embodiments of the present application provide a wireless communication method, a terminal device, and a network device, capable of identifying and handling a conflict between TRS transmission and uplink transmission, so that the terminal device can quickly activate an SCell based on the TRS.
  • a wireless communication method includes:
  • the terminal device receives first information, where the first information is used to determine transmission direction information;
  • the terminal device receives second information, where the second information is used to determine time-domain position information of a first reference signal, the first reference signal is used to activate a carrier, and the time-domain position information of the first reference signal includes at least One reference signal cluster, and one reference signal cluster corresponds to two consecutive time slots;
  • the terminal device determines a first receiving scheme for receiving the first reference signal according to the first information and the second information.
  • a wireless communication method in a second aspect, includes:
  • the network device sends first information and second information to the terminal device; wherein, the first information is used to determine transmission direction information, and the second information is used to determine time domain position information of a first reference signal, and the first reference signal uses
  • the time domain location information of the first reference signal includes at least one reference signal cluster, and one reference signal cluster corresponds to two consecutive time slots.
  • a terminal device configured to execute the method in the first aspect above.
  • the terminal device includes a functional module for executing the method in the first aspect above.
  • a network device configured to execute the method in the second aspect above.
  • the network device includes a functional module for executing the method in the second aspect above.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect above.
  • a sixth aspect provides a network device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect above.
  • an apparatus for implementing the method in any one of the first aspect to the second aspect above.
  • the device includes: a processor, configured to invoke and run a computer program from the memory, so that the device installed with the device executes the method in any one of the above first to second aspects.
  • a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in any one of the above-mentioned first aspect to the second aspect.
  • a computer program product including computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above first to second aspects.
  • a computer program which, when running on a computer, causes the computer to execute the method in any one of the above first to second aspects.
  • the terminal device determines the first receiving scheme for receiving the first reference signal according to the first information and the second information; wherein, the first information is used to determine the transmission direction information, and the second information is used to determine the first
  • the time-domain position information of the reference signal the first reference signal is used to activate the carrier, the time-domain position information of the first reference signal includes at least one reference signal cluster, and one reference signal cluster corresponds to two consecutive time slots. Therefore, the receiving manner of the first reference signal can be optimized, and conflict between the transmission of the first reference signal and the transmission of other signals can be avoided.
  • FIG. 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.
  • Fig. 2 is a schematic diagram of beam scanning provided by the present application.
  • Fig. 3 is a schematic diagram of a BWP provided by the present application.
  • FIG. 4 is a schematic diagram of activating or deactivating an SCell through one Oct of MAC CE provided by the present application.
  • FIG. 5 is a schematic diagram of activating or deactivating SCell through 4 Octs of MAC CE provided by the present application.
  • Fig. 6 is a schematic interaction flowchart of a wireless communication method provided according to an embodiment of the present application.
  • Fig. 7 is a schematic diagram of a TRS transmission conflict provided according to an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • Fig. 9 is a schematic block diagram of a network device provided according to an embodiment of the present application.
  • Fig. 10 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.
  • Fig. 12 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA 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 Telecommunications System
  • WLAN Wireless Local Area Networks
  • IoT Internet of Things
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and can also be applied to an independent (Standalone, SA ) meshing scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent meshing scene
  • the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to a licensed spectrum, Wherein, the licensed spectrum can also be regarded as a non-shared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user 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 user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • 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 aircraft, 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, 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, vehicle communication equipment, wireless communication chip/application-specific integrated circuit (application specific integrated circuit, ASIC)/system-on-chip (System on Chip, SoC), etc.
  • a virtual reality (Virtual Reality, VR) terminal device 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
  • vehicle communication equipment wireless communication chip/application-specific integrated circuit (application specific integrated circuit, ASIC
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, 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 devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolution
  • eNB evolved base station
  • gNB base station
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite, balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the network device may also be a base station installed on land, in water, or other locations.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico 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.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • the communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal device 120 (or called a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This embodiment of the present application does not limit it.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device.
  • the communication equipment may include a network equipment 110 and a terminal equipment 120 with communication functions.
  • the network equipment 110 and the terminal equipment 120 may be the specific equipment described above, and will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • predefined or “preconfigured” can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • the application does not limit its specific implementation.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.
  • Enhanced Mobile Broadband Enhance Mobile Broadband, eMBB
  • Ultra-Reliable and Low Latency Communication URLLC
  • Massive machine type of communication mMTC
  • eMBB still aims at users' access to multimedia content, services and data, and its demand is growing rapidly.
  • eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, the capabilities and requirements vary greatly, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios.
  • Typical applications of URLLC include: industrial automation, electric power automation, telemedicine operations (surgery), traffic safety guarantee, etc.
  • the typical characteristics of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of modules, etc.
  • NR is deployed on high frequencies.
  • the mechanism of beam sweeping is introduced to meet the coverage requirements (use space for coverage and time for space), as shown in Figure 2.
  • 5G synchronization signals are given in the form of synchronization signal blocks (SS/PBCH block, SSB), including primary synchronization signals (Primary Synchronization Signal, PSS)/ Secondary Synchronization Signal (SSS)/Physical Broadcast Channel (PBCH).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the 5G synchronization signal appears periodically in the time domain in the form of a Synchronization Signal burst set.
  • the number of beams (beams) actually transmitted by each cell is determined by configuration on the network side, but the frequency point where the cell is located determines the maximum number of beams (beams) that can be configured.
  • the maximum channel bandwidth can be 400MHz (such as wideband carrier), which is very large compared to the maximum 20M bandwidth of LTE. If a terminal device remains operating on a broadband carrier, the power consumption of the terminal device is significant. Therefore, the radio frequency (RF) bandwidth of the terminal device can be adjusted according to the actual throughput of the terminal device. And introduce the Band Width Part (BWP) to optimize the power consumption of the terminal equipment. For example, if the rate of the terminal device is very low, a smaller bandwidth can be configured for the terminal device (as shown in (a) in Figure 3). If the rate requirement of the terminal device is very high, a larger bandwidth can be configured for the terminal device ( As shown in (b) in Figure 3).
  • BWP Band Width Part
  • multiple BWPs can be configured for the terminal device (as shown in (c) in Figure 3). Another purpose of the BWP is to trigger the coexistence of multiple numerologies in a cell.
  • a terminal device can be configured with up to 4 uplink (uplink, UL) BWPs and up to 4 downlink (downlink, DL) BWPs through radio resource control (Radio Resource Control, RRC) dedicated signaling, but Only one DL BWP and UL BWP can be activated at the same time.
  • RRC Radio Resource Control
  • the first activated BWP among the configured BWPs may be indicated.
  • DCI Downlink Control Information
  • configuration parameters for each BWP include:
  • subcarrier spacing subcarrierSpacing
  • cyclicPrefix cyclic prefix
  • location and bandwidth (locationAndBandwidth);
  • BWP common configuration parameters (bwp-Common) and dedicated configuration parameters (bwp-Dedicated).
  • the UE monitors the radio link monitoring (radio link monitoring, RLM) process, only on the active BWP, the inactive BWP does not need to be operated, and when switching between different BWPs, There is also no need to reset RLM related timers and counters.
  • RLM radio link monitoring
  • RRM Radio Resource Management
  • CQI Channel Quantity Indicator
  • the initial first activated BWP is the first activated one in the RRC signaling
  • BWP id ranges from 0 to 4 in RRC signaling, and 0 defaults to the initial BWP.
  • the aggregated carrier must have downlink, but may not have uplink.
  • the primary carrier cell there must be a Physical Downlink Control Channel (PDCCH) and PUCCH of the cell, and only the primary carrier cell has the PUCCH, and other secondary carrier cells may have the PDCCH.
  • PDCCH Physical Downlink Control Channel
  • setting a bit to 0 indicates that the corresponding Scell is deactivated, and setting it to 1 indicates that the corresponding Scell is activated; or, setting a bit to 1 indicates that the corresponding Scell is deactivated, and setting it to 0 indicates that the corresponding Scell is activated.
  • the MAC CE method requires a delay from the activation of a Scell to the actual transmission of data.
  • TRS is introduced to assist the terminal equipment to quickly activate the Scell.
  • the transmission of TRS will occupy two consecutive time slots (slots), which may conflict with other transmissions. For example, the transmission of TRS and the transmission on the UL time slot conflict, resulting in unsuccessful TRS transmission. How to identify and deal with conflicts, is a problem that needs to be solved.
  • Fig. 6 is a schematic interaction flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in Fig. 6, the wireless communication method 200 may include at least part of the following content:
  • the terminal device determines a first receiving scheme for receiving the first reference signal according to the first information and the second information.
  • the first reference signal is a TRS or a reference signal with a function similar to the TRS.
  • the first reference signal may also be other reference signals, which is not limited in the present application.
  • the transmission of the first reference signal may conflict with the uplink transmission transmitted on the uplink time unit, and/or the transmission of the first reference signal may conflict with the uplink transmission transmitted on the flexible time unit , and further, cause the transmission of the first reference signal to fail.
  • the terminal device is configured to receive TRS on the first TRS cluster and the second TRS cluster, the first TRS cluster includes one DL time slot and one UL time slot, and the second TRS cluster includes two DL time slots Gap.
  • the first TRS cluster there is a conflict between the TRS transmission on the UL time slot and the uplink transmission on the uplink time slot.
  • the first information is used to determine the transmission direction information
  • the second information is used to determine the time domain position information of the first reference signal
  • the first reference signal is used to activate the carrier
  • the location information includes at least one reference signal cluster, and one reference signal cluster corresponds to two consecutive time slots. Therefore, the terminal device can determine a first receiving scheme for receiving the first reference signal based on the first information and the second information. Therefore, the receiving manner of the first reference signal can be optimized, and conflict between the transmission of the first reference signal and the transmission of other signals can be avoided.
  • the time unit described in the embodiments of the present application includes but is not limited to one of the following: time slot and symbol.
  • the second information is carried by RRC signaling or DCI.
  • the second information may be at least one of elements, fields, and fields in RRC signaling or DCI.
  • the second information may also be carried by other signaling, which is not limited in this application.
  • the first information and the second information may be carried by the same signaling, or may be carried separately by different signaling, which is not limited in the present application.
  • the interval between any two adjacent reference signal clusters in the at least one reference signal cluster meets the protocol agreement or network configuration, for example, the interval is 2 time slots.
  • the first receiving scheme includes: the terminal device does not expect any time unit used for transmitting the first reference signal to be an uplink time unit.
  • the first receiving scheme includes: the terminal device does not expect any time unit used for transmitting the first reference signal to be a flexible time unit.
  • the terminal device does not expect any time slot used to transmit the first reference signal to be a flexible (flexible) time slot, or the terminal device does not expect any symbol used to transmit the first reference signal to be a flexible (flexible) time slot. )symbol.
  • the network side needs to ensure that the time domain position of the triggered first reference signal transmission is not a flexible time slot or a flexible symbol. Even if the network side cannot guarantee it, the terminal device may adopt a method that is not restricted by the protocol, for example, the terminal device does not receive the first reference signal on a flexible time slot or a flexible symbol.
  • the first receiving scheme includes: the terminal device does not expect that two consecutive time slots in one reference signal cluster are all uplink time slots. That is, in one reference signal cluster, at least one time slot is a downlink time slot. Even if the network side cannot guarantee, the terminal device may adopt a manner not restricted by the protocol, for example, the terminal device does not receive the first reference signal on the uplink time slot.
  • the first receiving scheme includes: the terminal device does not expect that two consecutive time slots in one reference signal cluster are all flexible time slots. That is, in one reference signal cluster, at least one time slot is a downlink time slot. Even if the network side cannot guarantee, the terminal device may adopt a manner not restricted by the protocol, for example, the terminal device does not receive the first reference signal on the flexible time slot.
  • the first receiving scheme includes: the terminal device does not expect that the symbols used to transmit the first reference signal in two consecutive time slots in a reference signal cluster are uplink symbols or flexible symbols. Even if the network side cannot guarantee it, the terminal device may adopt a manner not restricted by the protocol, for example, the terminal device does not receive the first reference signal on uplink symbols or flexible symbols.
  • the first receiving scheme includes: the terminal device does not expect that the symbols used to transmit the first reference signal in two consecutive time slots in a reference signal cluster are uplink symbols. Even if the network side cannot guarantee it, the terminal device may adopt a method that is not restricted by the protocol, for example, the terminal device does not receive the first reference signal on the uplink symbol.
  • the first receiving scheme includes: in the at least one reference signal cluster, when the time unit used to transmit the first reference signal is an uplink time unit or a flexible time unit, the terminal device The first reference signal is not received.
  • the terminal device does not receive the first reference signal.
  • the terminal device does not receive the first reference signal.
  • the symbol used to transmit the first reference signal is an uplink symbol or a flexible symbol, the terminal device does not receive the first reference signal.
  • the network device does not send the first reference signal to the terminal device .
  • the network device does not send the first reference signal to the terminal device.
  • any time slot occupied by the sending of the first reference signal may be an uplink time slot, and the network device cancels the sending of the first reference signal on the time slot. It may also be that any symbol occupied by the transmission of the first reference signal is an uplink symbol, and the network device cancels the transmission of the first reference signal on the symbol. It may also be that any symbol occupied by the sending of the first reference signal is a flexible symbol, and then the network device cancels the sending of the first reference signal on the symbol. It may also be that any time slot occupied by the sending of the first reference signal is a flexible time slot, and then the network device cancels the sending of the first reference signal on the time slot.
  • the transmission of the first reference signal on the first time unit in the at least one reference signal cluster conflicts with uplink transmission.
  • the terminal device receives the first reference signal at a second time unit after the first time unit. That is, the network device sends the first reference signal to the terminal device at a second time unit after the first time unit. That is, the first reference signal that should have been sent in the first time unit is delayed until it is sent in the second time unit.
  • the first time unit may be a symbol or a time slot.
  • the second time unit is the closest downlink time unit to the first time unit.
  • the second time unit is the closest to the first time unit, and the corresponding pattern of the first reference signal does not have the second time unit A time slot in which the transmission of the reference signal collides with the uplink transmission.
  • the transmission of the first reference signal on the time unit in the first reference signal cluster of the at least one reference signal cluster conflicts with uplink transmission.
  • the terminal device receives the first reference signal on at least two consecutive downlink time slots after the first reference signal cluster.
  • the network device sends the first reference signal to the terminal device on at least two consecutive downlink time slots after the first reference signal cluster. That is, the first reference signal that should be sent on the first reference signal cluster is delayed until it is sent on the at least two consecutive downlink time slots.
  • the at least two consecutive downlink time slots are at least two consecutive downlink time slots closest to the first reference signal cluster.
  • the at least one reference signal cluster includes a first reference signal cluster and a second reference signal cluster
  • the second reference signal cluster is located after the first reference signal cluster, if the time in the first reference signal cluster
  • the transmission of the first reference signal on the unit conflicts with the uplink transmission, and the transmission of the first reference signal corresponding to the time unit in which the conflict occurs in the first reference signal cluster is delayed, then the second reference signal cluster is also postponed backward , and the interval between the time unit of the last first reference signal transmitted on the first reference signal cluster and the time unit of the first first reference signal transmitted on the second reference signal cluster is greater than or equal to the first threshold.
  • the first threshold is 2 time slots.
  • the first threshold is configured by a network device, or, the first threshold is agreed by a protocol.
  • the transmission of the first reference signal on the time unit in the at least one reference signal cluster conflicts with uplink transmission.
  • the terminal device receives the first reference signal on a target downlink resource, where the target downlink resource is obtained by an overall backward shift of the at least one reference signal cluster.
  • the network device sends the first reference signal to the terminal device on the target downlink resource. That is, the first reference signal that should be sent on the at least one reference signal cluster is delayed and sent on the target downlink resource.
  • the target downlink resource is a downlink resource closest to the at least one reference signal cluster and capable of transmitting the first reference signal corresponding to the at least one reference signal cluster.
  • the present application further defines the processing method after a conflict occurs between the transmission of the first reference signal and the uplink transmission, that is, the present application can identify and process the conflict between the transmission of the first reference signal and the uplink transmission, so that , the terminal device can quickly activate the SCell based on the first reference signal.
  • Fig. 8 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 includes:
  • the terminal device does not expect any time unit used for transmitting the first reference signal to be a flexible time unit.
  • the first receiving scheme includes:
  • the terminal device does not expect that the symbols used to transmit the first reference signal in two consecutive time slots in a reference signal cluster are uplink symbols or flexible symbols; or
  • the first receiving scheme includes:
  • the terminal device when the time unit used to transmit the first reference signal is an uplink time unit or a flexible time unit, the terminal device does not receive the first reference signal; or
  • the terminal device stops receiving the first reference signal.
  • the second time unit is the closest downlink time unit to the first time unit.
  • the second time unit is determined based on the first time domain offset carried in the medium access control control element MAC CE for activating the secondary cell.
  • the second time unit is the closest to the first time unit, and the corresponding pattern of the first reference signal does not have the second time unit A time slot in which the transmission of the reference signal collides with the uplink transmission.
  • the transmission of the first reference signal on the time unit of the first reference signal cluster in the at least one reference signal cluster conflicts with the uplink transmission
  • the communication unit 310 is further configured to transmit the first reference signal
  • the first reference signal is received on at least two consecutive downlink time slots after the cluster.
  • the at least two consecutive downlink time slots are at least two consecutive downlink time slots closest to the first reference signal cluster.
  • the at least two consecutive downlink time slots are determined based on the second time domain offset carried in the MAC CE for activating the secondary cell.
  • the first threshold is configured by a network device, or, the first threshold is agreed by a protocol.
  • the target downlink resource is a downlink resource closest to the at least one reference signal cluster and capable of transmitting the first reference signal corresponding to the at least one reference signal cluster.
  • the target downlink resource is determined based on the third time domain offset carried in the MAC CE for activating the secondary cell.
  • terminal device 300 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are for realizing the method shown in FIG. 6
  • the corresponding process of the terminal device in 200 will not be repeated here.
  • the second time unit is the closest downlink time unit to the first time unit.
  • the at least two consecutive downlink time slots are at least two consecutive downlink time slots closest to the first reference signal cluster.
  • the first threshold is configured by a network device, or, the first threshold is agreed by a protocol.
  • the target downlink resource is determined based on the third time domain offset carried in the MAC CE for activating the secondary cell.
  • the device mentioned in the embodiment of the present application may also be a chip.
  • it may be a system-on-a-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.
  • the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the methods of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the methods of the embodiments of the present application.
  • the computer program can be applied to the network device in the embodiment of the present application, and when the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application, For the sake of brevity, details are not repeated here.

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

Abstract

Des modes de réalisation de la présente demande concernent un procédé de communication sans fil, un dispositif terminal, et un dispositif de réseau, pouvant reconnaître et traiter un conflit entre la transmission du premier signal de référence et la transmission en liaison montante, de sorte qu'un dispositif terminal peut activer rapidement une cellule secondaire (SCell) sur la base du premier signal de référence. Le procédé de communication sans fil comprend les étapes suivantes : un dispositif terminal reçoit des premières informations, les premières informations étant utilisées pour déterminer des informations de direction de transmission; le dispositif terminal reçoit des deuxièmes informations, les deuxièmes informations étant utilisées pour déterminer des informations de position de domaine temporel du premier signal de référence, le premier signal de référence étant utilisé pour activer une porteuse, les informations de position de domaine temporel du premier signal de référence comprenant au moins un groupe de signaux de référence, et un groupe de signaux de référence correspondant à deux créneaux temporels consécutifs; le dispositif terminal détermine, en fonction des premières informations et des deuxièmes informations, un premier schéma de réception pour recevoir le premier signal de référence.
PCT/CN2021/121704 2021-09-29 2021-09-29 Procédé de communication sans fil, dispositif terminal et dispositif de réseau WO2023050146A1 (fr)

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PCT/CN2021/121704 WO2023050146A1 (fr) 2021-09-29 2021-09-29 Procédé de communication sans fil, dispositif terminal et dispositif de réseau

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EP3905796A1 (fr) * 2019-01-30 2021-11-03 Huawei Technologies Co., Ltd. Procédé de réception d'un signal de référence, procédé d'émission d'un signal de référence et appareil

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