Secondary cell activation method, terminal equipment and network equipment

Abstract

The present application relates to a secondary cell activation method, a terminal device and a network device, the method comprising: the terminal device receives first indication information, the first indication information comprises downlink control information DCI, 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 embodiments of the present application can realize fast activation of the Scell.

Description

Background Art

[0002] Carrier aggregation (CA) is a method of jointly scheduling and using resources on multiple component carriers (CCs) to enable the communication system to support a larger bandwidth and achieve a higher system peak rate. PCC (Primary Component Carrier) is called the primary carrier and is the CC corresponding to the primary cell (PCell). SCC (Secondary Component Carrier) is called the secondary carrier. The secondary cell (Scell) works on the SCC and provides additional wireless resources. SCell is configured through RRC dedicated signaling. The initial configuration state is the deactivated state, in which data cannot be sent or received. When it is needed, the SCell is activated through the Media Access Control Control Element (MAC CE). The SCell can only send or receive data when it is switched from the deactivated state to the activated state. However, due to the long processing time of MAC CE, the switching of Scell ​​from the deactivated state to the activated state requires a certain delay. Therefore, the current MAC CE activation method causes a long delay from the activation of Scell ​​to the ability to transmit data. How to design a more efficient Scell ​​activation method to meet system application requirements is an issue that currently needs to be studied and demonstrated. Summary of the invention

[0003] In view of this, the embodiments of the present application provide a secondary cell activation method, a terminal device, and a network device, which can be used for fast activation of a secondary cell Scell.

[0004] The embodiment of the present application provides a secondary cell activation method, which is applied to a terminal device, including:

[0005] 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 a secondary cell Scell ​​and / or send a reference signal RS;

[0006] 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.

[0007] The embodiment of the present application provides a secondary cell activation method, which is applied to a network device, including:

[0008] The network device sends first indication information to the terminal device, 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 not activate the secondary cell Scell ​​and / or not send a reference signal RS.

[0009] The present application also provides a terminal device, including:

[0010] 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 a secondary cell Scell ​​and / or send a reference signal RS;

[0011] An activation processing module is used to activate the Scell ​​and / or send the RS according to the first indication information, or not activate the Scell ​​and / or not send the RS.

[0012] The embodiment of the present application also provides a network device, including:

[0013] The sending module is used to send first indication information to the terminal device, wherein 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 not activate the secondary cell Scell ​​and / or not send a reference signal RS.

[0014] An embodiment of the present application further provides a terminal device, comprising: a processor and a memory, wherein the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to execute the method described above.

[0015] An embodiment of the present application further provides a network device, including: a processor and a memory, wherein the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to execute the method described above.

[0016] An embodiment of the present application also provides a chip, including: a processor, used to call and run a computer program from a memory, so that a device equipped with the chip executes the method described above.

[0017] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program, wherein the computer program enables a computer to execute the method as described above.

[0018] An embodiment of the present application also provides a computer program product, including computer program instructions, wherein the computer program instructions enable a computer to execute the method as described above.

[0019] The embodiment of the present application also provides a computer program, which enables a computer to execute the method as described above.

[0020] According to an embodiment of the present application, the network device tries to send a first indication information to the terminal, and the indication information includes DCI, or the indication information is carried by DCI. The terminal device can determine whether to activate or not activate the secondary cell Scell ​​according to the indication information, and can also determine whether to send RS or not. The embodiment of the present application can be used to implement a fast activation process of the Scell ​​and reduce the Scell ​​activation delay. When the Scell ​​and RS reuse the same indication information, it can reduce the control signaling overhead, reduce the terminal complexity, save system resources, and avoid the Scell ​​activation and RS activation being out of sync. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the communication system architecture of an embodiment of the present application.

[0022] Figure 2 This is a schematic diagram of the conceptual effect of carrier aggregation CA.

[0023] Figure 3 It is a flowchart of a method for activating a secondary cell (Scell) in a terminal side embodiment of the present application.

[0024] Figure 4 It is a flowchart of a method for activating a secondary cell (Scell) in a network side embodiment of the present application.

[0025] Figure 5 It is a flowchart of a terminal side Scell ​​activation operation according to an embodiment of the present application.

[0026] Figure 6 It is a schematic structural block diagram of a terminal device according to an embodiment of the present application.

[0027] Figure 7 It is a schematic structural block diagram of a network device according to an embodiment of the present application.

[0028] Figure 8 It is a schematic block diagram of a communication device according to an embodiment of the present application.

[0029] Fig. 9 It is a schematic block diagram of the chip of an embodiment of the present application.

[0030] Fig.10 It is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0032] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0033] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0034] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0035] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as 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.

[0036] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0037] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0038] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0039] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, 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 clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0040] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, etc.

[0041] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, 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. Optionally, the network device may also be a base station set up in a location such as land or water.

[0042] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0043] Figure 1 A network device 1100 and two terminal devices 1200 are schematically shown. Optionally, the wireless communication system 1000 may include multiple network devices 1100, and each network device 1100 may include other number of terminal devices within its coverage area, which is not limited in the present embodiment of the application. Figure 1 The wireless communication system 1000 shown may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but this is not limited in the embodiments of the present application.

[0044] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" is used to describe the association relationship of associated objects. For example, it means that there are three kinds of relationships between the associated objects. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " in this article generally means that the associated objects are in an "or" relationship.

[0045] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0046] In order to clearly explain the concept of the embodiments of the present application, firstly, the relevant contents of activation of a secondary cell in a communication system are briefly described.

[0047] In order to meet the demand for high speed, 5G system also supports carrier aggregation CA technology. Figure 2 , 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. According to the continuity of the spectrum where the aggregated carriers are located, the aggregated carriers include continuous carrier aggregation and non-continuous carrier aggregation; 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 carrier aggregation. There is only one primary carrier PCC, and PCC can provide radio resource control (RRC) signaling connection, non-access stratum (NAS) functions, etc. The physical uplink control channel (PUCCH) is on the PCC and only exists on the PCC. The secondary carrier SCC only provides additional wireless resources. PCC and SCC can also be referred to as service cells. According to regulations, a maximum of 5 aggregated carriers are supported, 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 conflict in the cell where each carrier is located.

[0048] Regarding Scell ​​activation, SCell is configured through RRC dedicated signaling. The initial configuration state is deactivated, in which data cannot be sent or received. Then, Scell ​​activation is required through MAC CE to send or receive data. From the perspective of Scell ​​configuration and activation latency, the current Scell ​​activation architecture has the problem of excessive latency.

[0049] In addition, considering that the synchronization signal block SSB period is long, it will affect the actual activation time of Scell, so the tracking reference signal (TRS) is introduced to assist the terminal device to quickly activate Scell. However, how to activate the sending of TRS is still unclear.

[0050] At present, due to the MAC CE activation method, a Scell ​​needs to experience a long delay from activation to actual data transmission, and the Scell ​​activation mechanism that relies on SSB will also increase the delay, which is increasingly unable to meet the low-latency requirements of 5G application scenarios.

[0051] In this case, the purpose of the embodiments of the present application is to introduce an activation mechanism based on DCI to activate Scell, provide multiple DCI designs, and further provide an activation scheme for activating reference signal RS transmission.

[0052] refer to Figure 3 The embodiment of the present application provides a secondary cell activation method, which is applied to a terminal device, and the method includes:

[0053] S101, 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;

[0054] S102: 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.

[0055] According to an embodiment of the present application, a terminal device receives first indication information sent by a network device, where the indication information includes a DCI, or the indication information is carried by the DCI. The terminal device can perform an operation of activating or deactivating a secondary cell Scell ​​according to the indication information, thereby avoiding the long delay problem existing in the original MAC CE activation mechanism; optionally, the indication information can also instruct the terminal device to activate the sending process of a reference signal RS, or instruct not to send RS, that is, determining the sending of RS based on the DCI, which can be used as an activation mechanism for activating RS sending, wherein RS can be used for activation of the secondary cell Scell; optionally, the indication information can also indicate together whether to activate the Scell ​​and whether to send the RS, for example, according to the indication information, the terminal device can send the RS when activating the Scell, or not activate the Scell ​​and not send the RS; this mechanism of processing the activation of the secondary cell Scell ​​and the sending activation of the reference signal RS together can realize a fast activation process of the Scell, and since the Scell ​​and the RS reuse the same indication information, not only can the system control signaling overhead be reduced, but also the situation where the Scell ​​activation and the RS activation are out of sync due to factors such as signaling loss can be avoided.

[0056] Correspondingly, the embodiment of the present application also provides a secondary cell activation method, which is applied to a network device, referring to Figure 4 , the method comprising:

[0057] S201, the network device sends first indication information to the terminal device, 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 not activate the secondary cell Scell ​​and / or not send a reference signal RS.

[0058] According to an embodiment of the present application, the network device tries to send a first indication information to the terminal, and the indication information includes DCI, or the indication information is carried by DCI. The terminal device can determine whether to activate or not activate the secondary cell Scell ​​according to the indication information, and can also determine whether to send RS or not, wherein RS can be used for activating the secondary cell Scell. The embodiment of the present application can be used to implement a fast activation process of Scell. When Scell ​​and RS reuse the same indication information, it can also reduce control signaling overhead, reduce terminal complexity, save system resources, and further avoid the asynchrony between Scell ​​activation and RS activation due to signaling loss.

[0059] In the embodiment of the present application, the reference signal RS may be a tracking reference signal TRS, a channel state information measurement reference signal CSI-RS, or other types of reference signals applicable to the embodiment of the present application. The reference signal RS may be used for activating the secondary cell Scell.

[0060] According to an embodiment of the present application, optionally, the first indication information includes a first DCI format, and a first information field in the first DCI format is used to indicate whether to activate the Scell ​​and / or send the RS.

[0061] According to an embodiment of the present application, optionally, if the first information field is a first value, the terminal device activates the Scell ​​and / or sends the RS; if the first information field is a second value, the terminal device does not activate the Scell ​​and / or does not send the RS.

[0062] According to an embodiment of the present application, optionally, the first DCI format includes DCI format 2_6 or a user-specific DCI format.

[0063] According to an embodiment of the present application, optionally, the first information field in the first DCI format includes a secondary cell dormancy indication field.

[0064] According to an embodiment of the present application, optionally, if the current Scell ​​is in an activated state, the SCell dormancy indication field is used to configure the dormancy bandwidth part dormancy BWP; if the current Scell ​​is in a deactivated state, the SCell domancy indication field may be used for at least one of the following:

[0065] If the current Scell ​​is in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell;

[0066] If the current Scell ​​is in a deactivated state, the SCell dormancy indication field is used to indicate sending the RS;

[0067] If the Scell ​​is currently in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell ​​and sending of the RS.

[0068] According to an embodiment of the present application, optionally, the indication field may be interpreted according to the value (for example, 1 or 0) of the SCell dormancy indication field, as follows:

[0069] (1) If the SCell dormancy indication field is a first value and the Scell ​​is currently activated, the terminal device configures the Scell ​​as a dormancy BWP;

[0070] (2) If the SCell dormancy indication field is a first value and the Scell ​​is currently in a deactivated state, the terminal device keeps the Scell ​​deactivated and / or does not send the RS;

[0071] (3) If the SCell dormancy indication field is a second value and the current Scell ​​is activated, the terminal device configures the Scell ​​as a non-dormancy BWP;

[0072] (4) If the SCell dormancy indication field is a second value and the current Scell ​​is in a deactivated state, the terminal device activates the Scell ​​and / or sends the RS.

[0073] According to an embodiment of the present application, optionally, the first DCI format (for example, DCI format 2_6) includes a first bit, where the first bit is used to indicate the purpose of the first DCI format;

[0074] If the first bit is a first value, the first DCI format is used to indicate dormancyBWP configuration; 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.

[0075] According to an embodiment of the present application, optionally, the usage of the first DCI format may also be configured by high-layer signaling.

[0076] According to an embodiment of the present application, optionally, the first DCI format includes multiple bits, the multiple bits respectively correspond to multiple information fields in the first DCI format, and the multiple bits are respectively used to indicate the usage of the corresponding multiple information fields;

[0077] Among them, if the second bit among the multiple bits is a first value, the information field corresponding to the second bit is used to indicate the dormancy BWP configuration; if the second bit among the multiple bits is a second value, the information field corresponding to the second bit is used to indicate whether the Scell ​​is activated and / or the RS occurs.

[0078] According to an embodiment of the present application, optionally, the usage of the multiple information fields in the first DCI format may also be configured by high-layer signaling.

[0079] According to an embodiment of the present application, optionally, the first indication information includes a second DCI format, and the second DCI format is used to configure dormancy BWP; the second DCI format is multiplexed to indicate whether to activate the Scell ​​and / or send the RS.

[0080] According to an embodiment of the present application, optionally, the second DCI format includes DCI format 1_1.

[0081] According to an embodiment of the present application, optionally, when a search space set is provided to the terminal device for detecting a physical downlink control channel PDCCH to detect DCI format 1_1, if a resource allocation resourceAllocation parameter is the same as a dynamic switching dynamicSwitch parameter, and all bits of a frequency domain resource assignment field of the DCI format 1_1 are a first value, the terminal device determines that the purpose of the DCI format 1_1 is to configure dormancy BWP;

[0082] Among them, when a search space set is provided to the terminal device for detecting PDCCH to detect DCI format 1_1, if the resource allocation resourceAllocation parameter is the same as the dynamic switching dynamicSwitch parameter, and all bits of the frequency domain resource allocation field of the DCI format 1_1 are the second value, then the terminal device determines that the purpose of the DCI format 1_1 is to indicate the activation of the Scell ​​and / or the RS.

[0083] According to the embodiment of the present application, the state of the information field (frequency domain resource assignment field) is used to distinguish between dormancy BWP and Scell ​​activation, thereby avoiding increasing scheduling restrictions.

[0084] According to an embodiment of the present application, optionally, in the bitmap provided for the Scell, if the first bit is a first value, it indicates deactivation of the SCell and / or the RS; if the second bit is a second value, it indicates activation of the SCell and / or the RS.

[0085] According to an embodiment of the present application, optionally, the first indication information is multicast information or user-specific information.

[0086] According to an embodiment of the present application, optionally, if the terminal device receives activation signaling for a first RS on a non-activated first carrier, the terminal device activates the first carrier and the first RS.

[0087] According to an embodiment of the present application, optionally, if the terminal device has activated TRS, activation of the Scell ​​depends on the TRS; if the terminal device has not activated TRS, activation of the Scell ​​depends on a synchronization signal block SSB.

[0088] According to an embodiment of the present application, optionally, the first indication information includes a second DCI, and 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 send the RS.

[0089] According to an embodiment of the present application, optionally, if the current Scell ​​is in an activated state, the dormancyBWP indication field is used to configure dormancy BWP; if the current Scell ​​is in a deactivated state, the dormancy BWP indication field is used to indicate whether to activate the Scell ​​and / or send the RS.

[0090] In an implementation manner of the present application, optionally, the indication content of the dormancy BWP indication field may be determined in the following manner:

[0091] (1) If the Scell ​​is currently in an activated state and the dormancy BWP indication field is a first value, the terminal device configures the Scell ​​as a dormancy BWP;

[0092] (2) If the Scell ​​is currently in an activated state and the dormancy BWP indication field is a second value, the terminal device configures the Scell ​​as a non-dormancy BWP;

[0093] (3) If the Scell ​​is currently in a deactivated state and the dormancy BWP indication field is a first value, the terminal device activates the Scell ​​and / or sends the RS;

[0094] (4) If the Scell ​​is currently in a deactivated state and the dormancy BWP indication field is a second value, the terminal device keeps the Scell ​​deactivated and / or does not send the RS.

[0095] In another implementation manner of the present application, optionally, the indication content of the dormancy BWP indication field may also be determined in the following manner:

[0096] (1) If the dormancy BWP indication field is a first value and the Scell ​​is currently in an activated state, the terminal device configures the Scell ​​as a dormancy BWP;

[0097] (2) If the dormancy BWP indication field is a first value and the Scell ​​is currently in a deactivated state, the terminal device keeps the Scell ​​deactivated and / or does not send the RS;

[0098] (3) If the dormancyBWP indication field is a second value and the Scell ​​is currently in an activated state, the terminal device configures the Scell ​​as a non-dormancy BWP;

[0099] (4) If the dormancy BWP indication field is a second value and the Scell ​​is currently in a deactivated state, the terminal device activates the Scell ​​and / or sends the RS.

[0100] The embodiments of the present application define a method for activating Scell ​​through at least one of the above embodiments, wherein Scell ​​is activated based on DCI, the indication field in DCI (such as dormancy BWP indication field, etc.) can be reused, and the redundant field in DCI can be used as a Scell ​​fast activation field. When activating Scell, the sending process of TRS can also be activated.

[0101] The implementation of the secondary cell activation method according to the embodiment of the present application is described above through multiple embodiments. The specific implementation process of the embodiment of the present application is described below through multiple specific examples.

[0102] refer to Figure 5 In one implementation of the embodiment of the present application, the terminal side behavior may include the following two steps:

[0103] Step 1: The terminal receives Scell ​​activation signaling; the signaling may be DCI.

[0104] Step 2: The terminal performs an Scell ​​activation operation; activating the Scell ​​means activating the corresponding carrier.

[0105] The following is a detailed description of the specific operations that may be performed on the terminal side of the embodiment of the present application and the specific contents of the related definitions.

[0106] Further, the Scell ​​activation signaling can be used to activate the Scell ​​and / or the reference signal RS. For example, the Scell ​​activation signaling can be used to simultaneously activate the Scell ​​and the reference signal RS, wherein an identifier can be used to indicate whether the Scell ​​and the reference signal RS are simultaneously activated. 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, wherein the RS can be used for activation of the secondary cell Scell.

[0107] In the embodiment of the present application, the reference signal and Scell ​​are activated by multiplexing the same signaling, which can reduce the Scell ​​activation delay, reduce the control signaling overhead, and avoid the asynchrony between Scell ​​activation and reference signal activation caused by signaling loss.

[0108] In the embodiment of the present application, the reference signal RS may be TRS or CSI-RS, or other applicable reference signals. The reference signal is sent in the Scell. The following description takes the tracking reference signal TRS as an example for explanation, and it should be understood that the relevant content is not limited to TRS.

[0109] When the embodiment of the present application uses DCI to activate Scell ​​and / or reference signal, the existing DCI format or existing domain can be reused. In addition, control signaling specifically used to activate Scell ​​can also be added. The embodiment of the present application reuses the existing DCI format or existing domain, which can reduce the workload of standards, and can also reduce the number of DCI formats for terminal blind detection, thereby reducing the complexity of the terminal.

[0110] The following provides specific examples for detailed description.

[0111] Embodiment 1: Multiplexing DCI format 2_6

[0112] In this embodiment, the Scell ​​fast activation indication is implemented by multiplexing the secondary cell dormancy indication information field (Scell ​​dormancy indication field) in the DCI format 2_6.

[0113] A. If the Scell ​​is in the active state, this information field is interpreted as a dormancy BWP indication;

[0114] B. If the Scell ​​is in the deactivated state, at least one of the following explanations can be given:

[0115] a) This information field indicates Scell ​​activation and / or deactivation;

[0116] b) This information field indicates TRS activation and / or deactivation (or, sending TRS and / or not sending TRS);

[0117] c) 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 simultaneously.

[0118] Example 1

[0119] The terminal is configured with 5 secondary cell groups Scell ​​groups, each Scell ​​group contains a Scell, corresponding to Scell1, Scell2, Scell3, Scell4 and Scell5. Among them, Scell ​​1, 3 and 5 are activated, and Scell ​​2 and 4 are deactivated. When the terminal receives the indication information of "11100", because Scell1, 3 and 5 are activated, there are:

[0120] "1" is interpreted as: Scell ​​1 and 3 are configured as dormancy BWP.

[0121] "0" is interpreted as: Scell5 is configured as non-dormancy BWP.

[0122] Because Scell2 and 4 are deactivated, we have:

[0123] “1” is interpreted as: Scell2 is configured to activate Scell ​​and / or activate TRS.

[0124] "0" is interpreted as: Scell4 is configured to keep Scell ​​deactivated and / or not send TRS.

[0125] It should be noted that for the above indication domain values ​​0 and 1, the opposite interpretation method can also be adopted to achieve the indication purpose.

[0126] Example 2

[0127] The terminal is configured with one Scell ​​group, and one Scell ​​group includes five Scells, which correspond to Scell ​​1, Scell ​​2, Scell ​​3, Scell ​​4 and Scell ​​5. Among them, Scell ​​1, 3 and 5 are activated, and Scell ​​2 and 4 are deactivated.

[0128] 1. When the terminal receives the indication information as 1,

[0129] (1) Because Scells 1, 3, and 5 are in the active state, “1” is interpreted as: Scells 1, 3, and 5 are configured as dormancy BWP.

[0130] (2) Since Scell ​​2 and 4 are deactivated, “1” is interpreted as: Scell ​​2 and 4 are configured to keep Scell ​​deactivated and / or not send TRS.

[0131] 2. When the terminal receives the indication message 0,

[0132] (1) Because Scells 1, 3, and 5 are in the active state, “0” is interpreted as: Scells 1, 3, and 5 are configured as non-dormancy BWP.

[0133] (2) Since Scell ​​2 and 4 are deactivated, “0” is interpreted as: Scell ​​2 and 4 are configured to activate Scell ​​and / or activate TRS transmission.

[0134] It should be noted that for the above indication domain values ​​0 and 1, the opposite interpretation method can also be adopted to achieve the indication purpose.

[0135] Example 3

[0136] The embodiment of the present application further designs one or more bits in DCI format 2_6 to indicate the purpose of the DCI. Two design methods or indication methods are respectively given below.

[0137] Design 1: One bit of DCI format 2_6 is used to indicate the purpose of the DCI format. For example, the one bit may be the first bit in DCI format 2_6.

[0138] Specifically, when the first bit of DCI format 2_6 is 0, the DCI is used to indicate at least 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 includes multiple fields, and Tables 1 and 2 show "flag, block 1, block 2" in DCI format 2_6, where the identifier "flag" is the first bit, and each block includes a wakeup indication "wakeup indication" and a secondary cell dormancy indication "scell dormancy indication".

[0139] Referring to the first column of Table 1, if the terminal receives the indication information "0100111", the physical meanings of the corresponding information fields refer to the second column of Table 1.

[0140] information Physical meaning 0 Flag = 0, this DCI is used to indicate dormancy BWP configuration 1 Wakeup indication 0 Scell ​​group 1 dormancy off (Scell ​​group 1 stops dormancy) 0 Scell ​​group 2 dormancy off (Secondary cell group 2 stops dormancy) 1 Scell ​​group 3 dormancy on (scell group 3 dormancy on) 1 Scell ​​group 4 dormancy on (scell group 4 dormancy on) 1 Scell ​​group 5 dormancy on (scell group 5 dormancy on)

[0141] Referring to the first column of Table 2, if the indication information received by the terminal is "1100111", the physical meaning of each corresponding information field is shown in the second column of Table 2.

[0142] Table 2

[0143]

[0144] Design 2: Use multiple bits in DCI format 2_6 to indicate the usage of multiple fields in the DCI format.

[0145] DCI format 2_6 includes multiple fields, such as block 1 and block 2, each of which includes a "wakeup indication", one or more "flags" and one or more "scelldormancy indications" corresponding to the "flags". If flag = 0, the corresponding scell dormancy indication is used to indicate dormancy BWP configuration. If flag = 1, the corresponding scell dormancy indication is used to indicate Scell ​​activation and / or TRS activation.

[0146] Referring to the first column of Table 3, if the terminal receives the indication information "0100111", the physical meaning of each corresponding information field is shown in the second column of Table 3.

[0147] Table 3

[0148]

[0149] In addition to the above two designs, a similar flag identification function can also be implemented through high-level configuration (such as RRC signaling). That is, whether the relevant indication field is used to configure dormancy BWP or to indicate the state of reference signal and / or Scell ​​activation is configured by the high-level configuration. After the terminal receives the indication information, it interprets DCIformat 2_6 accordingly according to the high-level configuration.

[0150] In order to ensure clear processing logic, during high-level configuration, only one purpose can be configured for the same indication information field at a time. For example, when the terminal receives high-level signaling configuration using dormancy BWP technology, DCI format 2_6 is used for dormancy BWP indication. For another example, when the terminal receives high-level signaling configuration using RS-based Scell ​​activation technology, DCI format 2_6 is used to indicate Scell ​​activation and / or TRS activation.

[0151] Embodiment 2: Multiplexing the dormancy BWP indication field in the DCI format

[0152] In this embodiment, the fast activation indication is performed by multiplexing the existing fields in the DCI format, for example, the dormancy BWP indication field is multiplexed.

[0153] A. If the Scell ​​is in a deactivated state, the indication field is interpreted as Scell ​​activation and / or TRS activation.

[0154] B. If the Scell ​​is in the active state, the indication field is interpreted as the dormancy BWP configuration.

[0155] C.

[0156] Example 1

[0157] The terminal is configured with 5 Scell ​​groups, each of which contains a Scell, corresponding to Scell1, Scell2, Scell3, Scell4 and Scell5. Among them, Scell ​​1, 3 and 5 are activated, and Scell ​​2 and 4 are deactivated. When the terminal receives the indication information "11100", because Scell1, 3 and 5 are activated, there are:

[0158] "1" is interpreted as: Scell ​​1 and 3 are configured as dormancy BWP.

[0159] "0" is interpreted as: Scell5 is configured as non-dormancy BWP.

[0160] Because Scell2 and 4 are deactivated, we have:

[0161] “1” is interpreted as: Scell2 is configured to activate Scell ​​and / or activate TRS.

[0162] "0" is interpreted as: Scell4 is configured to remain deactivated and / or not send TRS.

[0163] It should be noted that for the above indication domain values ​​0 and 1, the opposite interpretation method can also be adopted to achieve the indication purpose.

[0164] Example 2

[0165] The terminal is configured with one Scell ​​group, and one Scell ​​group includes five Scells, which correspond to Scell ​​1, Scell ​​2, Scell ​​3, Scell ​​4 and Scell ​​5. Among them, Scell ​​1, 3 and 5 are activated, and Scell ​​2 and 4 are deactivated.

[0166] 1. When the terminal receives instruction information 1,

[0167] (1) Because Scells 1, 3, and 5 are in the active state, “1” is interpreted as: Scells 1, 3, and 5 are configured as dormancy BWP.

[0168] (2) Since Scell ​​2 and 4 are deactivated (including not sending TRS), “1” is interpreted as: Scell ​​2 and 4 are configured to keep Scell ​​deactivated and / or not send TRS.

[0169] 2. When the terminal receives the indication message 0,

[0170] (1) Because Scells 1, 3, and 5 are in the active state, “0” is interpreted as: Scells 1, 3, and 5 are configured as non-dormancy BWP.

[0171] (2) Since Scell ​​2 and 4 are deactivated, “0” is interpreted as: Scell ​​2 and 4 are configured as activated Scell ​​and / or activated TRS.

[0172] It should be noted that for the above indication domain values ​​0 and 1, the opposite interpretation method can also be adopted to achieve the indication purpose.

[0173] Embodiment 3: Multiplexing DCI format 1_1 for dormancy BWP configuration

[0174] In this embodiment, the Scell ​​fast activation indication is implemented by multiplexing the DCI format 1_1 used for dormancy BWP configuration.

[0175] According to existing regulations, when a search space set is provided to a terminal device for detecting the physical downlink control channel PDCCH to detect DCI format 1_1, if the resourceAllocation parameter is the same as the dynamicSwitch parameter (resourceAllocation = dynamicSwitch), and all bits of the frequency domain resource allocation field of DCI format 1_1 are 0 or 1, the terminal device considers that the purpose of DCI format 1_1 is to configure dormancy BWP.

[0176] Note that when all bits of the frequency domain resource allocation field of DCI format 1_1 are 0 or 1, DCI format 1_1 is used to configure dormancy BWP. This is actually a redundant design, that is, no matter the bit position is 0 or 1, the meaning of the indication is the same.

[0177] In this regard, in an embodiment of the present application, the above redundant design is modified as follows:

[0178] In the case where a search space set is provided to the terminal device for detecting a physical downlink control channel PDCCH to detect DCI format 1_1, if a resource allocation resourceAllocation parameter is the same as a dynamic switching dynamicSwitch parameter, and all bits of a frequency domain resource allocation field of the DCI format 1_1 are a first value (e.g., 0), the terminal device determines that the purpose of the DCI format 1_1 is to configure a dormancy BWP;

[0179] When a search space set is provided to a terminal device for detecting a physical downlink control channel PDCCH to detect DCI format 1_1, if a resource allocation parameter resourceAllocation is the same as a dynamic switching parameter dynamicSwitch, and all bits of a frequency domain resource allocation field of the DCI format 1_1 are a second value (e.g., 1), the terminal device determines that the purpose of the DCI format 1_1 is to indicate activation of an Scell ​​and / or RS.

[0180] Correspondingly, in the bitmap provided for the Scell, if the first bit is a first value (eg, 0), it indicates deactivation of the SCell and / or the RS; if the second bit is a second value (eg, 1), it indicates activation of the SCell and / or the RS.

[0181] The description in the relevant standard can be recorded as follows:

[0182] If a UE is provided search space sets to monitor PDCCH for detectionof DCI format 1_1,and if

[0183] -the CRC of DCI format 1_1 is scrambled by a C-RNTI or a MCS-C-RNTI,and if

[0184] -a one-shot HARQ-ACK request field is not present or has a′0′value,and if

[0185] -the UE detects a DCI format 1_1 on the primary cell that does notinclude a carrier indicator field,or detects a DCI format 1_1 on the primarycell that includes a carrier indicator field with value equal to 0,and if

[0186] -resourceAllocation=resourceAllocationType0 and all bits of thefrequency domain resource assignment field in DCI format 1_1 are equal to 0,or

[0187] -resourceAllocation=resourceAllocationType1 and all bits of thefrequency domain resource assignment field in DCI format 1_1 are equal to 1,or

[0188] -resourceAllocation=dynamicSwitch and all bits of the frequencydomain resource assignment field in DCI format 1_1 are equal to 0.

[0189] the UE considers the DCI format 1_1 as indicating SCell dormancy,notscheduling a PDSCH reception or indicating a SPS PDSCH release,and fortransport block 1interprets the sequence of fields of

[0190] -modulation and coding scheme

[0191] -new data indicator

[0192] -redundancy version

[0193] and of

[0194] -HARQ process number

[0195] -antenna port(s)

[0196] -DMRS sequence initialization

[0197] as providing a bitmap to each configured SCell,in an ascending orderof the SCell index,

[0198] where

[0199] -a′0′value for a bit of the bitmap indicates an active DL BWP,provided by dormantBWP-Id,for the UE for a corresponding activated SCell

[0200] -a′1′value for a bit of the bitmap indicates

[0201] -an active DL BWP,provided by firstWithinActiveTimeBWP-Id,for the UEfor a corresponding activated SCell,if a current active DL BWP is the dormantDL BWP

[0202] -a current active DL BWP,for the UE for a corresponding activatedSCell,if the current active DL BWP is not the dormant DL BWP

[0203] -the UE sets the active DL BWP to the indicated active DL BWP

[0204] -resourceAllocation=dynamicSwitch and all bits of the frequencydomain resource assignment field in DCI format 1_1 are equal to 1

[0205] the UE considers the DCI format 1_1 as indicating SCell and / or TRSactivation,not scheduling a PDSCH reception or indicating a SPS PDSCHrelease,and for transport block 1 interprets the sequence of fields of

[0206] -modulation and coding scheme

[0207] -new data indicator

[0208] -redundancy version

[0209] and of

[0210] -HARQ process number

[0211] -antenna port(s)

[0212] -DMRS sequence initialization

[0213] as providing a bitmap to each configured SCell, in an ascending order of the SCell index,

[0214] where

[0215] -a′0′value for a bit of the bitmap indicates deactivate Scell ​​and / orTRS

[0216] -a′1′value for a bit of the bitmap indicates activate Scell ​​and / orTRS.

[0217] According to an embodiment of the present application, considering that dormancy BWP and Scell ​​activation will not occur at the same time, the state of the dormancy BWP indication field is reused to distinguish between dormancy BWP and Scell ​​activation, thereby avoiding increasing scheduling restrictions; and, since BWP configuration occurs only after Scell ​​activation, reuse of the same information field indication will not cause usage conflicts.

[0218] In the embodiment of the present application, the DCI specifically used to activate the Scell ​​may be multicast signaling or UE specific signaling.

[0219] In the embodiments of the present application, the multicast signaling may adopt at least one of the following designs:

[0220] The signaling is scrambled with the RNTI dedicated to Scell ​​activation, such as "ScellActivation RNTI";

[0221] The signaling contains multiple user-specific domains, i.e. the location of each domain is configured to the user through user-specific signaling.

[0222] Each user-specific domain may include at least one of the following:

[0223] a) One or more bits indicate carrier or carrier group information, which can be in the form of an index or a bitmap;

[0224] b) One or more bits indicate TRS configuration information.

[0225] In the embodiment of the present application, the user-specific signaling may adopt at least one of the following designs:

[0226] Adding Scell ​​activation domain to the existing user-specific signaling, which may specifically include a) and / or b) above

[0227] Reuse the existing DCI format, such as DCI format 1_1, and use the RNTI scrambling dedicated to Scell ​​activation.

[0228] The description in the relevant standard can be recorded as follows:

[0229] If a UE is provided search space sets to monitor PDCCH for detection of DCI format 1_1, and if

[0230] -the CRC of DCI format 1_1 is scrambled by a C-RNTI or a MCS-C-RNTI, and if

[0231] -a one-shot HARQ-ACK request field is not present or has a′0′value, and if

[0232] -the UE detects a DCI format 1_1 on the primary cell that does notinclude a carrier indicator field, or detects a DCI format 1_1 on the primarycell that includes a carrier indicator field with value equal to 0, andif

[0233] -resourceAllocation=resourceAllocationType0 and all bits of thefrequency domain resource assignment field in DCI format 1_1 are equal to 0,or

[0234] -resourceAllocation=resourceAllocationType1 and all bits of thefrequency domain resource assignment field in DCI format 1_1 are equal to 1,or

[0235] -resourceAllocation=dynamicSwitch and all bits of the frequencydomain resource assignment field in DCI format 1_1 are equal to 0or 1

[0236] the UE considers the DCI format 1_1 as indicating SCell and / or TRSactivation,not scheduling a PDSCH reception or indicating a SPS PDSCHrelease,and for transport block 1 interprets the sequence of fields of

[0237] -modulation and coding scheme

[0238] -new data indicator

[0239] -redundancy version

[0240] and of

[0241] -HARQ process number

[0242] -antenna port(s)

[0243] -DMRS sequence initialization

[0244] as providing a bitmap to each configured SCell, in an ascending order of the SCell index,

[0245] where

[0246] -a′0′value for a bit of the bitmap indicates deactivate Scell ​​and / orTRS

[0247] -a′1′value for a bit of the bitmap indicates activate Scell ​​and / orTRS.

[0248] In an embodiment of the present application, when DCI is used to activate the reference signal, an implicit activation method is also included. For example, when a terminal receives RS activation signaling on a non-activated carrier, such as an activation signaling of an A-TRS, the terminal assumes that the carrier is activated, and further, the activation of the carrier is implemented based on the A-TRS. Optionally, the signaling may also jointly activate the CSIRS used for subsequent CSI reporting. The time domain relationship between A-TRS and CSI-RS can be agreed or configured in advance.

[0249] In an embodiment of the present application, when the terminal performs the Scell ​​activation operation in step 2, processes such as time-frequency synchronization, automatic gain control (AGC) setting, and channel state information (CSI) measurement and reporting may be performed. Optionally, if TRS is activated in step 1, Scell ​​activation depends on TRS; if TRS is not activated in step 1, Scell ​​activation may depend on SSB.

[0250] The above describes the specific configuration and implementation of the embodiments of the present application from different perspectives through multiple embodiments. Corresponding to the processing method of at least one of the above embodiments, the embodiments of the present application also provide a terminal device 100, referring to Figure 6 , which includes:

[0251] The receiving module 110 is 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 a secondary cell Scell ​​and / or send a reference signal RS;

[0252] The activation processing module 120 is configured to activate the Scell ​​and / or send the RS according to the first indication information, or not activate the Scell ​​and / or not send the RS.

[0253] According to an embodiment of the present application, optionally, the reference signal RS includes a tracking reference signal TRS and / or a channel state information measurement reference signal CSI-RS.

[0254] According to an embodiment of the present application, optionally, the first indication information includes a first DCI format, and a first information field in the first DCI format is used to indicate whether to activate the Scell ​​and / or send the RS.

[0255] According to an embodiment of the present application, optionally, if the first information field is a first value, the terminal device activates the Scell ​​and / or sends or the RS;

[0256] If the first information field is a second value, the terminal device does not activate the Scell ​​and / or does not send the RS.

[0257] According to an embodiment of the present application, optionally, the first DCI format includes DCI format 2_6 or a user-specific DCI format.

[0258] According to an embodiment of the present application, optionally, the first information field in the first DCI format includes a secondary cell dormancy indication field.

[0259] According to an embodiment of the present application, optionally, if the current Scell ​​is in an activated state, the SCelldormancy indication field is used to configure a dormancy bandwidth part dormancy BWP;

[0260] If the Scell ​​is currently in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell; or, if the Scell ​​is currently in a deactivated state, the SCell dormancy indication field is used to indicate sending of the RS; or, if the Scell ​​is currently in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell ​​and sending of the RS.

[0261] According to an embodiment of the present application, optionally, if the SCell dormancy indication field is a first value and the current Scell ​​is in an activated state, the terminal device configures the Scell ​​as a dormancy BWP; if the SCell dormancy indication field is a first value and the current Scell ​​is in a deactivated state, the terminal device keeps the Scell ​​deactivated and / or does not send the RS; if the SCell dormancy indication field is a second value and the current Scell ​​is in an activated state, the terminal device configures the Scell ​​as a non-dormancy BWP; if the SCell dormancy indication field is a second value and the current Scell ​​is in a deactivated state, the terminal device activates the Scell ​​and / or sends the RS.

[0262] According to an embodiment of the present application, optionally, the first DCI format includes a first bit, and the first bit is used to indicate the purpose of the first DCI format; wherein, if the first bit is a first value, the first DCI format is used to indicate the dormancyBWP 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.

[0263] According to an embodiment of the present application, optionally, the usage of the first DCI format is configured by high-layer signaling.

[0264] According to an embodiment of the present application, optionally, the first DCI format includes multiple bits, and the multiple bits respectively correspond to multiple information fields in the first DCI format, and the multiple bits are respectively used to indicate the purpose of the corresponding multiple information fields; wherein, if the second bit of the multiple bits is a first value, the information field corresponding to the second bit is used to indicate the dormancyBWP configuration; if the second bit of the multiple bits is a second value, the information field corresponding to the second bit is used to indicate whether the Scell ​​is activated and / or the RS occurs.

[0265] According to an embodiment of the present application, optionally, the usage of the multiple information fields in the first DCI format is configured by high-layer signaling.

[0266] According to an embodiment of the present application, optionally, the first indication information includes a second DCI format, and the second DCI format is used to configure dormancy BWP; the second DCI format is multiplexed to indicate whether to activate the Scell ​​and / or send the RS.

[0267] According to an embodiment of the present application, optionally, the second DCI format includes DCI format 1_1.

[0268] According to an embodiment of the present application, optionally, when a search space set is provided to the terminal device for detecting a physical downlink control channel PDCCH to detect DCI format 1_1, if a resource allocation resourceAllocation parameter is the same as a dynamic switching dynamicSwitch parameter, and all bits of a frequency domain resource allocation field of the DCI format 1_1 are a first value, the terminal device determines that the purpose of the DCI format 1_1 is to configure dormancy BWP;

[0269] When a search space set is provided to the terminal device for detecting a physical downlink control channel PDCCH to detect DCI format 1_1, if a resource allocation parameter resourceAllocation is the same as a dynamic switching parameter dynamicSwitch, and all bits of the frequency domain resource allocation field of the DCI format 1_1 are a second value, the terminal device determines that the purpose of the DCI format 1_1 is to indicate activation of the Scell ​​and / or the RS.

[0270] According to an embodiment of the present application, optionally, in the bitmap provided for the Scell, if the first bit is a first value, it indicates deactivation of the SCell and / or the RS; if the second bit is a second value, it indicates activation of the SCell and / or the RS.

[0271] According to an embodiment of the present application, optionally, the first indication information is multicast information or user-specific information.

[0272] According to an embodiment of the present application, optionally, if the terminal device receives activation signaling for a first RS on a non-activated first carrier, the terminal device activates the first carrier and the first RS.

[0273] According to an embodiment of the present application, optionally, if the terminal device has activated TRS, activation of the Scell ​​depends on the TRS; if the terminal device has not activated TRS, activation of the Scell ​​depends on a synchronization signal block SSB.

[0274] Corresponding to the processing method of at least one of the above embodiments, the embodiment of the present application further provides a network device 200, referring to Figure 7 , which includes:

[0275] The sending module 210 is used to send 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 not activate the secondary cell Scell ​​and / or not send a reference signal RS.

[0276] The terminal device 100 and the network device 200 of the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment. The corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the terminal device 100 and the network device 200 can be found in the corresponding description in the aforementioned method embodiment, and will not be repeated here.

[0277] It should be noted that the functions described in the various modules (sub-modules, units or components, etc.) in the terminal device 100 and the network device 200 of the embodiment of the present application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-modules, units or components, etc.). For example, the first sending module and the second sending module can be different modules or the same module, and both can implement the corresponding functions of the terminal device of the embodiment of the present application.

[0278] Figure 8 It 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.

[0279] Optionally, the communication device 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0280] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0281] Optionally, 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.

[0282] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of the antennas may be one or more.

[0283] For example, the functions of the receiving module 110 and the sending module 210 may be implemented by the transceiver 630 or a receiver in the transceiver 630. For another example, the receiving module 110 and the sending module 210 may also be implemented by two different transceivers.

[0284] Optionally, the communication device 600 may be a terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0285] An embodiment of the present application also provides a network device, which includes multiple units for implementing the method executed by the above-mentioned network device; or the network device includes a processor, a memory and a transceiver, and the steps involving internal processing of the network device are implemented by the processor by calling the program in the memory, and the part involving communication between the network device and the terminal is implemented by the transceiver or by the processor triggering the transceiver to execute corresponding steps.

[0286] Fig. 9 It 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.

[0287] Optionally, 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 method in the embodiment of the present application.

[0288] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0289] Optionally, 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 obtain information or data sent by other devices or chips.

[0290] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0291] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0292] Optionally, the chip can be applied to the present application as Figure 6 The terminal device in the embodiment, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, for the sake of brevity, will not be repeated here.

[0293] The chips used in the network device and the terminal device may be the same chip or different chips.

[0294] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0295] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0296] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM).

[0297] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), 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 link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM), etc. That is to say, 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.

[0298] Fig.10 It 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.

[0299] The terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the methods of various embodiments of the present application, and the network device 820 can be used to implement the corresponding functions implemented by the network device in the methods of various embodiments of the present application. For the sake of brevity, no further description is given here.

[0300] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using 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 instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instruction can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, a data center, etc. that contains one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0301] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0302] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0303] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for activating a secondary cell (Scell), applied to a terminal device, the method comprising: The terminal device receives first indication information, where the first indication information includes downlink control information DCI, the first indication information includes a first DCI format, and the first information field in the first DCI format includes a secondary cell dormancy indication SCelldormancy indication field; If the current Scell ​​is in an activated state, the SCell dormancy indication field is used to configure the dormancy bandwidth part dormancy BWP; If the Scell ​​is currently in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell ​​and sending of a reference signal RS.

2. The method according to claim 1, wherein: The reference signal RS includes a tracking reference signal TRS and / or a channel state information measurement reference signal CSI-RS.

3. The method according to claim 1, wherein: The first information field in the first DCI format is used to indicate whether to activate the Scell ​​and / or send the RS.

4. The method according to claim 3, wherein: If the first information field is a first value, the terminal device activates the Scell ​​and / or sends the RS; If the first information field is a second value, the terminal device does not activate the Scell ​​and / or does not send the RS.

5. The method according to claim 4, wherein: The first DCI format includes DCI format 2_6 or a user-specific DCI format.

6. The method according to claim 1, wherein: If the SCell dormancy indication field is a first value and the Scell ​​is currently activated, the terminal device configures the Scell ​​as a dormancy BWP; If the SCell dormancy indication field is a second value and the current Scell ​​is in a deactivated state, the terminal device activates the Scell ​​and sends the RS.

7. The method according to any one of claims 2 to 6, wherein: The first DCI format includes a first bit, and the first bit is used to indicate the purpose of the first DCI format; wherein, If the first bit is a first value, the first DCI format is used to indicate a dormancy BWP configuration. 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.

8. The method according to any one of claims 2 to 6, wherein: The usage of the first DCI format is configured by higher layer signaling.

9. The method according to any one of claims 2 to 6, wherein: The first DCI format includes a plurality of bits, the plurality of bits respectively corresponding to a plurality of information fields in the first DCI format, and the plurality of bits respectively used to indicate the usage of the corresponding plurality of information fields; wherein, If a second bit of the plurality of bits is a first value, the information field corresponding to the second bit is used to indicate a dormancy BWP configuration, If a second bit among the multiple bits is a second value, the information field corresponding to the second bit is used to indicate whether to activate the Scell ​​and / or send the RS.

10. The method according to any one of claims 2 to 6, wherein: The usage of the multiple information fields in the first DCI format is configured by high-layer signaling.

11. The method according to claim 1, wherein: The first indication information is multicast information or user-specific information.

12. The method according to claim 1, wherein: If the terminal device receives activation signaling for inactivating the first RS on the first carrier, the terminal device activates the first carrier and the first RS.

13. The method according to claim 1, wherein: If the terminal device has activated the TRS, the activation of the Scell ​​depends on the TRS; If the terminal device does not activate TRS, the activation of the Scell ​​depends on the synchronization signal block SSB.

14. A method for activating a secondary cell (Scell), applied to a network device, the method comprising: The network device sends first indication information to the terminal device, where the first indication information includes downlink control information DCI, the first indication information includes a first DCI format, and the first information field in the first DCI format includes a secondary cell dormancy indication SCell dormancy indication field; If the current Scell ​​is in an activated state, the SCell dormancy indication field is used to configure the dormancy bandwidth part dormancy BWP; If the Scell ​​is currently in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell ​​and sending of a reference signal RS.

15. The method according to claim 14, wherein: The reference signal RS includes a tracking reference signal TRS and / or a channel state information measurement reference signal CSI-RS.

16. The method according to claim 14, wherein: The first information field in the first DCI format is used to indicate whether to activate the Scell ​​and / or send the RS.

17. The method according to claim 16, wherein: If the first information field is a first value, the terminal device activates the Scell ​​and / or sends the RS; If the first information field is a second value, the terminal device does not activate the Scell ​​and / or does not send the RS.

18. The method according to claim 17, wherein: The first DCI format includes DCI format 2_6 or a user-specific DCI format.

19. The method according to claim 14, wherein: If the SCell dormancy indication field is a first value and the Scell ​​is currently activated, the terminal device configures the Scell ​​as a dormancy BWP; If the SCell dormancy indication field is a second value and the current Scell ​​is in a deactivated state, the terminal device activates the Scell ​​and sends the RS.

20. The method according to any one of claims 15 to 19, wherein: The first DCI format includes a first bit, and the first bit is used to indicate the purpose of the first DCI format; wherein, If the first bit is a first value, the first DCI format is used to indicate a dormancy BWP configuration. 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.

21. The method according to any one of claims 15 to 19, wherein: The usage of the first DCI format is configured by higher layer signaling.

22. The method according to any one of claims 15 to 19, wherein: The first DCI format includes a plurality of bits, the plurality of bits respectively corresponding to a plurality of information fields in the first DCI format, and the plurality of bits respectively used to indicate the usage of the corresponding plurality of information fields; wherein, If a second bit of the plurality of bits is a first value, the information field corresponding to the second bit is used to indicate a dormancy BWP configuration, If a second bit among the multiple bits is a second value, the information field corresponding to the second bit is used to indicate whether to activate the Scell ​​and / or send the RS.

23. The method according to any one of claims 15 to 19, wherein: The usage of the multiple information fields in the first DCI format is configured by high-layer signaling.

24. The method according to claim 14, wherein: The first indication information is multicast information or user-specific information.

25. The method of claim 14, further comprising: The network device sends activation signaling for deactivating a first RS on a first carrier to the terminal device, where the activation signaling is used to enable the terminal device to activate the first carrier and the first RS.

26. The method of claim 14, wherein: If the terminal device has activated the TRS, the activation of the Scell ​​depends on the TRS; If the terminal device does not activate TRS, the activation of the Scell ​​depends on the synchronization signal block SSB.

27. A terminal device, comprising: a receiving module, configured to receive first indication information, where the first indication information includes downlink control information DCI, the first indication information includes a first DCI format, and the first information field in the first DCI format includes a secondary cell dormancy indication SCell dormancy indication field; The activation processing module is used for, if the current Scell ​​is in an activated state, the SCell dormancy indication field is used to configure the dormancy bandwidth part dormancy BWP; if the current Scell ​​is in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell ​​and sending of a reference signal RS.

28. The terminal device according to claim 27, wherein: The reference signal RS includes a tracking reference signal TRS and / or a channel state information measurement reference signal CSI-RS.

29. The terminal device according to claim 27, wherein: The first information field in the first DCI format is used to indicate whether to activate the Scell ​​and / or send the RS.

30. The terminal device according to claim 29, wherein: If the first information field is a first value, the terminal device activates the Scell ​​and / or sends the RS; If the first information field is a second value, the terminal device does not activate the Scell ​​and / or does not send the RS.

31. The terminal device according to claim 30, wherein: The first DCI format includes DCI format 2_6 or a user-specific DCI format.

32. The terminal device according to claim 27, wherein: If the SCell dormancy indication field is a first value and the Scell ​​is currently activated, the terminal device configures the Scell ​​as a dormancy BWP; If the SCell dormancy indication field is a second value and the current Scell ​​is in a deactivated state, the terminal device activates the Scell ​​and sends the RS.

33. The terminal device according to any one of claims 28 to 32, wherein: The first DCI format includes a first bit, and the first bit is used to indicate the purpose of the first DCI format; wherein, If the first bit is a first value, the first DCI format is used to indicate a dormancy BWP configuration. 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.

34. The terminal device according to any one of claims 28 to 32, wherein: The usage of the first DCI format is configured by higher layer signaling.

35. The terminal device according to any one of claims 28 to 32, wherein: The first DCI format includes a plurality of bits, the plurality of bits respectively corresponding to a plurality of information fields in the first DCI format, and the plurality of bits respectively used to indicate the usage of the corresponding plurality of information fields; wherein, If a second bit of the plurality of bits is a first value, the information field corresponding to the second bit is used to indicate a dormancy BWP configuration, If a second bit among the multiple bits is a second value, the information field corresponding to the second bit is used to indicate whether to activate the Scell ​​and / or send the RS.

36. The terminal device according to any one of claims 28 to 32, wherein: The usage of the multiple information fields in the first DCI format is configured by high-layer signaling.

37. The terminal device according to claim 27, wherein: The first indication information is multicast information or user-specific information.

38. The terminal device according to claim 27, wherein: If the terminal device receives activation signaling for inactivating the first RS on the first carrier, the terminal device activates the first carrier and the first RS.

39. The terminal device according to claim 27, wherein: If the terminal device has activated the TRS, the activation of the Scell ​​depends on the TRS; If the terminal device does not activate TRS, the activation of the Scell ​​depends on the synchronization signal block SSB.

40. A network device comprising: a sending module, configured to send first indication information to a terminal device, where the first indication information includes downlink control information DCI, the first indication information includes a first DCI format, and the first information field in the first DCI format includes a secondary cell dormancy indication SCell dormancy indication field; If the current Scell ​​is in an activated state, the SCell dormancy indication field is used to configure the dormancy bandwidth part dormancy BWP; If the Scell ​​is currently in a deactivated state, the SCell dormancy indication field is used to indicate activation of the Scell ​​and sending of a reference signal RS.

41. The network device according to claim 40, wherein: The reference signal RS includes a tracking reference signal TRS and / or a channel state information measurement reference signal CSI-RS.

42. The network device according to claim 40, wherein: The first information field in the first DCI format is used to indicate whether to activate the Scell ​​and / or send the RS.

43. The network device according to claim 42, wherein: If the first information field is a first value, the terminal device activates the Scell ​​and / or sends the RS; If the first information field is a second value, the terminal device does not activate the Scell ​​and / or does not send the RS.

44. The network device according to claim 43, wherein: The first DCI format includes DCI format 2_6 or a user-specific DCI format.

45. The network device according to claim 40, wherein: If the SCell dormancy indication field is a first value and the Scell ​​is currently activated, the terminal device configures the Scell ​​as a dormancy BWP; If the SCell dormancy indication field is a second value and the current Scell ​​is in a deactivated state, the terminal device activates the Scell ​​and sends the RS.

46. ​​The network device according to any one of claims 41 to 45, wherein: The first DCI format includes a first bit, and the first bit is used to indicate the purpose of the first DCI format; wherein, If the first bit is a first value, the first DCI format is used to indicate a dormancy BWP configuration. 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.

47. The network device according to any one of claims 41 to 45, wherein: The usage of the first DCI format is configured by higher layer signaling.

48. The network device according to any one of claims 41 to 45, wherein: The first DCI format includes a plurality of bits, the plurality of bits respectively corresponding to a plurality of information fields in the first DCI format, and the plurality of bits respectively used to indicate the usage of the corresponding plurality of information fields; wherein, If a second bit of the plurality of bits is a first value, the information field corresponding to the second bit is used to indicate a dormancy BWP configuration, If a second bit among the multiple bits is a second value, the information field corresponding to the second bit is used to indicate whether to activate the Scell ​​and / or send the RS.

49. The network device according to any one of claims 41 to 45, wherein: The usage of the multiple information fields in the first DCI format is configured by high-layer signaling.

50. The network device according to claim 40, wherein: The first indication information is multicast information or user-specific information.

51. The network device according to claim 40, further comprising: The network device sends activation signaling for deactivating a first RS on a first carrier to the terminal device, where the activation signaling is used to enable the terminal device to activate the first carrier and the first RS.

52. The network device according to claim 40, wherein: If the terminal device has activated the TRS, the activation of the Scell ​​depends on the TRS; If the terminal device does not activate TRS, the activation of the Scell ​​depends on the synchronization signal block SSB.

53. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor calling and running the computer program stored in the memory so that the terminal device executes the method as claimed in any one of claims 1 to 13.

54. A network device comprising: A processor and a memory, wherein the memory is used to store a computer program, and the processor calls and runs the computer program stored in the memory to execute the method according to any one of claims 14 to 26.

55. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 26.

56. A computer-readable storage medium for storing a computer program, wherein: When the computer program is executed by a device, the device is caused to perform the method according to any one of claims 1 to 26.

57. A computer program product comprising computer program instructions, wherein: The computer program instructions cause a computer to perform the method according to any one of claims 1 to 26.

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