Wireless communication method, device, and storage medium

Abstract

The embodiment of the present application provides a wireless communication method and device, and a network device effectively reduces the overhead of the network device when a transmitting antenna and / or a receiving antenna is closed / opened. The method comprises the following steps: a terminal device receives a wake-up signal sent by a network device in the case that the number of transmitting antennas and / or receiving antennas of the network device changes or is about to change; wherein, the wake-up signal comprises first indication information, and the first indication information is used for indicating at least one of the following: a parameter set changes; the terminal device is woken up; and the terminal device continues to sleep.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal device, network device, and computer-readable storage medium. Background Technology

[0002] When some transmit / receive (TX / RX) antennas on the base station side are turned off or on, it will affect all terminal devices (e.g., user equipment) connected to that base station. This impact may include both cell-level and user equipment-level configurations. In related technologies, user equipment configuration changes can be notified via reconfiguration messages. However, since a reconfiguration message needs to be sent to all affected user equipment within a short period, this can lead to high system load and significant overhead during that time period.

[0003] How to reduce the overhead of network equipment when the base station TX / RX antennas are off / on is a problem that this application urgently needs to solve. Summary of the Invention

[0004] This application provides a wireless communication method, a network device, a terminal device, and a computer-readable storage medium. When the transmitting antenna and / or receiving antenna are turned off / on, the network device effectively reduces the overhead of the network device.

[0005] Firstly, a wireless communication method is provided, comprising:

[0006] The terminal device receives a wake-up signal sent by the network device when the number of transmitting antennas and / or receiving antennas changes or is about to change;

[0007] The wake-up signal includes first indication information, which indicates at least one of the following:

[0008] The parameter set has changed;

[0009] Wake up the terminal device;

[0010] The terminal device remains in sleep mode.

[0011] Secondly, a wireless communication method is provided, including:

[0012] When the number of transmit antennas and / or receive antennas changes or is about to change, the network device sends a wake-up signal to the terminal device; wherein the wake-up signal includes first indication information, the first indication information being used to indicate at least one of the following:

[0013] The parameter set has changed;

[0014] Wake up the terminal device;

[0015] The terminal device remains in sleep mode.

[0016] Thirdly, a terminal device includes:

[0017] The receiving module is used by the terminal device to receive a wake-up signal sent by the network device when the number of transmitting antennas and / or receiving antennas changes or is about to change.

[0018] The wake-up signal includes first indication information, which indicates at least one of the following:

[0019] The parameter set has changed;

[0020] Wake up the terminal device;

[0021] The terminal device remains in sleep mode.

[0022] Fourthly, a network device, comprising:

[0023] A transmitting module is configured to send a wake-up signal to a terminal device when the number of transmitting antennas and / or receiving antennas changes or is about to change; wherein the wake-up signal includes first indication information, the first indication information being used to indicate at least one of the following:

[0024] The parameter set has changed;

[0025] Wake up the terminal device;

[0026] The terminal device remains in sleep mode.

[0027] Fifthly, a terminal device includes: a processor and a memory for storing computer programs, the processor for calling and running the computer programs stored in the memory to execute the aforementioned wireless communication method.

[0028] Sixthly, a network device includes: a processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the above-described wireless communication method.

[0029] Seventhly, embodiments of this application provide a chip for implementing the above-described wireless communication method.

[0030] Specifically, the chip includes a processor for calling and running a computer program from a memory, causing a device equipped with the chip to perform the aforementioned wireless communication method.

[0031] Eighthly, embodiments of this application provide a computer-readable storage medium for storing a computer program that causes a computer to perform the wireless communication method described above.

[0032] Ninthly, embodiments of this application provide a computer program product, including computer program instructions that cause a computer to execute the above-described wireless communication method.

[0033] In a tenth aspect, embodiments of this application provide a computer program that, when run on a computer, causes the computer to execute the aforementioned wireless communication method.

[0034] Through the above technical solution, when the number of transmitting antennas and / or receiving antennas changes or is about to change, the terminal device receives a wake-up signal sent by the network device. The wake-up signal includes first indication information, which indicates at least one of the following: waking up the terminal device, the terminal device continuing to sleep, or a change in the parameter set. That is, in this embodiment, the network device sends a wake-up signal to the terminal device when at least some of the transmitting antennas and / or receiving antennas are off / on, or about to be off / on, and the terminal device determines whether to wake up based on the wake-up signal. Therefore, the wireless communication method provided in this embodiment wakes up the terminal device based on a wake-up mechanism. The terminal device only needs to wake up for a specific period of time to listen, without needing to listen periodically or continuously, thereby reducing the power consumption of the terminal device. Simultaneously, the wake-up signal is based on an existing listening mechanism and does not introduce additional overhead, resulting in lower power consumption. Attached Figure Description

[0035] Figure 1 This is a schematic structural diagram of the wireless communication system provided in the embodiments of this application;

[0036] Figure 2 This is an illustrative flowchart of the wireless communication method provided in the embodiments of this application. Figure 1 ;

[0037] Figure 3 This is an illustrative flowchart of the wireless communication method provided in the embodiments of this application. Figure 2 ;

[0038] Figure 4 This is a schematic block diagram of a terminal device provided in an embodiment of this application;

[0039] Figure 5 This is a schematic block diagram of a network device provided in an embodiment of this application;

[0040] Figure 6 This is a schematic structural diagram of a communication device provided in an embodiment of this application;

[0041] Figure 7 This is a schematic structural diagram of the chip provided in the embodiments of this application;

[0042] Figure 8 This is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0044] Figure 1 This is a schematic diagram of a wireless communication system according to an embodiment of this application.

[0045] like Figure 1 As shown, the communication system 100 may include a terminal device 110 and a network device 120. The network device 120 can communicate with the terminal device 110 via an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.

[0046] It should be understood that the embodiments of this application are only illustrated by way of example with communication system 100, but the embodiments of this application are not limited thereto. That is to say, the technical solutions of the embodiments of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system, also known as New Radio (NR) communication system, or future communication systems, etc.

[0047] exist Figure 1 In the communication system 100 shown, network device 120 may be an access network device that communicates with terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with terminal device 110 (e.g., user equipment) located within that coverage area.

[0048] Network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, a Next Generation Radio Access Network (NG RAN) device, a base station (gNB) in an NR system, a radio controller in a Cloud Radio Access Network (CRAN), or a relay station, access point, vehicle-mounted device, wearable device, hub, switch, bridge, router, or network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0049] Terminal device 110 includes, but is not limited to, any terminal device that is connected to network device 120 or other terminal devices via wired or wireless connection.

[0050] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), 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. The access terminal may be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, IoT device, satellite handheld terminal, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network, or terminal device in a future evolved network, etc.

[0051] Terminal device 110 can be used for device-to-device (D2D) communication.

[0052] The wireless communication system 100 may further include a core network device 130 that communicates with a base station. This core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an Access and Mobility Management Function (AMF) device, an Authentication Server Function (AUSF) device, a User Plane Function (UPF) device, or a Session Management Function (SMF) device. Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device for an LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that SMF+PGW-C can simultaneously implement the functions of both SMF and PGW-C. During network evolution, the names of the aforementioned core network devices may change, or new network entities may be formed by dividing the core network functions; this embodiment does not limit this.

[0053] The various functional units in the communication system 100 can also establish connections and communicate with each other through the next generation (NG) interface.

[0054] For example, terminal devices establish air interface connections with access network devices through the NR interface for transmitting user plane data and control plane signaling; terminal devices can establish control plane signaling connections with the AMF through NG interface 1 (N1); access network devices, such as next-generation radio access base stations (gNB), can establish user plane data connections with the UPF through NG interface 3 (N3); access network devices can establish control plane signaling connections with the AMF through NG interface 2 (N2); the UPF can establish control plane signaling connections with the SMF through NG interface 4 (N4); the UPF can interact with the data network for user plane data through NG interface 6 (N6); the AMF can establish control plane signaling connections with the SMF through NG interface 11 (N11); and the SMF can establish control plane signaling connections with the PCF through NG interface 7 (N7).

[0055] Figure 1An exemplary embodiment shows a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices, and each base station may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.

[0056] It should be noted that, Figure 1 This application merely illustrates the system to which this application applies; of course, the methods shown in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" in this application merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship. It should also be understood that "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a related relationship. For example, A instructing B can mean that A directly instructs B, for example, B can be obtained through A; it can also mean that A indirectly instructs B, for example, A instructs C, B can be obtained through C; or it can mean that there is a related relationship between A and B. It should also be understood that "correspondence" mentioned in the embodiments of this application can indicate a direct or indirect correspondence between two things, or an related relationship between two things, or a relationship of instruction and being instructed, configuration and being configured, etc. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method. For example, predefined can refer to those defined in a protocol. It should also be understood that in the embodiments of this application, the "protocol" can refer to standard protocols in the field of communication, such as LTE protocol, NR protocol, and related protocols applied to future communication systems, and this application does not limit this.

[0057] To facilitate understanding of the technical solutions of the embodiments of this application, the relevant technologies of the embodiments of this application are described below. The following relevant technologies are optional solutions and can be combined with the technical solutions of the embodiments of this application in any way, and they all fall within the protection scope of the embodiments of this application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0059] Regarding the network-side energy-saving scheme in Rel-18, the first version of 5G-Advanced, the network side will turn off some TX / RX antennas in certain scenarios to save power consumption. When some TX / RX antennas on the network side are turned off or on, the configuration information of all terminal devices (e.g., UEs) accessing that network side needs to be updated in a timely manner. It should be noted that since the partial turning off or on of TX / RX antennas on the network side does not occur frequently, if the UE frequently monitors the information indicating that the TX / RX antennas are turned off or on, it will bring a lot of unnecessary overhead. Therefore, the following three methods are usually used to notify the UE to update the configuration information. The first method is that the network side sends system information to the primary cell (PCell) operating on the main frequency band to update the configuration information of the UE in the PCell; that is, the network side broadcasts the time-frequency resources where various system information is located to the PCell. When the system information changes, the network side will notify the PCell, and then the UE in the PCell will receive the changed system information on the configured time-frequency resources and update the configuration information accordingly. The second method involves the network sending a reconfiguration message to each UE in other cells operating outside the main frequency band, and the UE updating its configuration information based on the reconfiguration message. The third method involves the UE periodically listening for downlink control information (DCI) of the group-common class used by a group of UEs to determine if the corresponding configuration information has changed; when the UE detects a change, it updates the configuration information after a specific time offset.

[0060] However, in the first approach, the system information is designed for cell-level configuration changes, which cannot reflect the different configurations of each UE before and after changes in the TX / RX antennas on the network side. Furthermore, the system message update speed is slow, with high latency, making it unable to promptly reflect rapid changes in the number of antennas on the network side, and unable to react quickly when antennas change. Changes in system messages require the system to frequently send system message change messages, and since these changes are carried through paging messages, it also increases power consumption on both the network and terminal sides. In the second approach, sending a reconfiguration message to all affected UEs within a short period leads to high system load and high latency during specific time periods, hindering rapid response to antenna changes and consuming significant amounts of Physical Downlink Control Channel (PDCCH) / Physical Downlink Shared Channel (PDSCH) resources. Moreover, network-side configuration changes affect a large number of UEs, making individual notifications inefficient. In the third method, DCI can only carry limited information. However, the configuration changes required before and after some TX / RX antenna changes on the network side may be numerous, making it unsuitable for transmission via DCI. In other words, this method is only suitable for determining whether the network-side TX / RX antennas have changed, and cannot be used to notify each UE of configuration updates before and after the change. Furthermore, since the TX / RX antennas on the network side do not frequently turn on or off, periodically monitoring DCI will impose additional power consumption on the UE.

[0061] How to reduce the overhead of network equipment when the base station TX / RX antennas are off / on is a problem that this application urgently needs to solve.

[0062] Figure 2 This is a flowchart illustrating a wireless communication method provided in an embodiment of this application, as shown below. Figure 2 As shown, this method is applied to Figure 1 The wireless communication system 100 shown includes a method comprising:

[0063] Step 201: When the number of transmitting antennas and / or receiving antennas changes or is about to change, the network device sends a wake-up signal to the terminal device.

[0064] The wake-up signal includes first indication information, which indicates at least one of the following:

[0065] The parameter set has changed;

[0066] Wake up the terminal device;

[0067] The terminal device remains in sleep mode.

[0068] In this embodiment of the application, in a scenario where a wake-up signal can be sent, the network device can send a wake-up signal to the terminal device when some physical antennas are turned on or off. For example, if the network device turns on or off some of the transmitting and / or receiving antennas, and the number of transmitting and / or receiving antennas of the network device has changed, the network device determines all terminal devices affected by the change in the number of transmitting and / or receiving antennas, and sends a wake-up signal including first indication information to each affected terminal device. The first indication information is used to indicate at least one of the following: a change in parameter set, waking up the terminal device, or the terminal device continuing to sleep.

[0069] In another feasible scenario for sending a wake-up signal, the network device can send a wake-up signal to the terminal device before turning on or off some physical antennas, i.e., when the number of some physical antennas is about to change. For example, the network device decides whether to turn on or off some transmit and / or receive antennas based on a specific service model. Further, if the network device detects that the number of transmit and / or receive antennas is about to change based on a specific service model, the network device sends a wake-up signal to the terminal device. In this way, the network device can notify the terminal device to change the parameter set before turning off or on some transmit and / or receive antennas, and then the network device turns off or on some transmit and / or receive antennas.

[0070] As can be seen from the two scenarios of sending wake-up signals mentioned above, the network device in this application can flexibly choose the appropriate time to send wake-up signals to the terminal device, which improves the flexibility of sending and can adapt to more wireless communication scenarios.

[0071] In this embodiment, the first indication information included in the wake-up signal can be used to instruct the terminal device to wake up, to instruct the terminal device to continue sleeping, or to indicate a change in the parameter set. In other words, this application reuses the first indication information in the wake-up signal, improving the utilization rate of the wake-up signal.

[0072] In both scenarios described above, when the number of its transmit and / or receive antennas changes or is about to change, the network device sends a wake-up signal carrying first indication information. Since the first indication information can indicate a change in the parameter set, the terminal device can promptly learn of the configuration change based on this information in the wake-up signal. The first indication information can instruct the terminal device to wake up for timely subsequent information reception. This provides support for the terminal device to promptly learn the parameter set to switch to, and also reduces power consumption as the terminal device only needs to wake up and listen during specific periods, rather than periodically or continuously. Furthermore, since the first indication information is carried in the wake-up signal, utilizing an existing wake-up mechanism, no additional overhead is introduced.

[0073] In this embodiment, the terminal device continuing to sleep includes the main communication interface of the terminal device being in a closed state; waking up the terminal device includes the main communication interface of the terminal device being in an active state or an intermittently active state.

[0074] In some embodiments, the wake-up signal includes a signal that can be received and decoded by a wake-up radio frequency; the wake-up signal includes, but is not limited to, a wake-up frame, a synchronization frame, and a wake-up packet.

[0075] In some embodiments, the first indication information included in the wake-up signal can be implemented in various ways. For example, the first indication information can be short message indication information. The bit state of the short message indication information includes a first state and a second state. The first state is used to indicate that the terminal device is being woken up or that the parameter set has changed, and the second state is used to indicate that the terminal state continues to sleep. The first indication information can also be the nth bit in the short message, where n is a positive integer. That is, the nth bit in the short message can be used to both indicate that the terminal device is being woken up or that the parameter set has changed, and to indicate that the terminal device continues to sleep. In other words, this application improves the utilization rate of the wake-up signal and reduces the overhead by reusing one bit to represent the first indication information.

[0076] Step 202: The terminal device receives the wake-up signal sent by the network device.

[0077] In this embodiment, the network device sends a wake-up signal including first indication information to the terminal device. Correspondingly, after receiving the wake-up signal including the first indication information, if the wake-up signal includes first indication information for instructing the terminal device to wake up, only the terminal device needs to be woken up. If the wake-up signal includes first indication information for instructing the terminal device to continue sleeping, the terminal device continues sleeping. If the wake-up signal includes first indication information for instructing a change in the parameter set, the terminal device is woken up, and the parameter set to be switched is obtained from a specific search space.

[0078] This application discloses a wireless communication method, which includes: when the number of transmitting antennas and / or receiving antennas of a network device changes or is about to change, a terminal device receives a wake-up signal sent by the network device; wherein, the wake-up signal includes first indication information, the first indication information being used to indicate at least one of the following: waking up the terminal device, the terminal device continuing to sleep, or a parameter set changing; that is, in this application embodiment, the network device sends a wake-up signal to the terminal device when at least some of the transmitting antennas and / or receiving antennas are turned off / on, or are about to be turned off / on, and the terminal device determines whether to wake up based on the wake-up signal; it can be seen that the wireless communication method provided by this application embodiment wakes up the terminal device based on a wake-up mechanism, the terminal device only needs to wake up for a specific period of time to listen, instead of periodically or continuously listening, thereby reducing the power consumption of the terminal device; at the same time, the wake-up signal is based on an existing listening mechanism, which does not introduce additional overhead, resulting in low power consumption.

[0079] Figure 3 This is a flowchart illustrating a wireless communication method provided in an embodiment of this application, as shown below. Figure 3 As shown, this method is applied to Figure 1 The wireless communication system 100 shown includes a method comprising:

[0080] Step 301: When the terminal device is in the radio resource control connection state, the network device configures the terminal device with parameter sets for different numbers of transmit antennas and / or receive antennas corresponding to different bandwidth portions of the BWP by establishing an RRCSetup message or a radio resource control RRC reconfiguration message.

[0081] Among them, the parameter sets corresponding to different BWPs include the parameter sets that the terminal device needs to switch to.

[0082] In some embodiments, within a wireless communication system, the radio resource control (RRC) state of a terminal device includes three states: RRC_CONNECTED, RRC_INACTIVE, and RRC_IDLE. When the terminal device is in the RRC_CONNECTED state, connections have been established with both the access network device and the core network device, allowing data to be directly transmitted to the terminal device upon arrival at the network. When the terminal device is in the RRC_INACTIVE state, links have been established between the terminal device and both the access network device and the core network device, but the link between the terminal device and the access network device has been released. In this state, both the terminal device and the access network device retain the terminal device's context, allowing the access network device to quickly restore the link when data needs to be transmitted. When the terminal device is in the RRC_IDLE state, no links have been established between the terminal device and either the access network device or the core network device. When data needs to be transmitted, links between the terminal device and both the access network device and the core network device must first be established.

[0083] In this embodiment, the Bandwidth Part (BWP) is a sub-bandwidth obtained by dividing a cell's high-frequency band. Each sub-bandwidth contains certain system parameter set (numerology) characteristics. Understandably, the Bandwidth Part can be divided into three types: initial BWP, default BWP, and active BWP. The initial BWP is used for initial uplink or downlink access; the active BWP refers to the bandwidth part that is in an active state and is used for high-speed data transmission; the default BWP is used for default configuration, and the UE falls back to the default BWP for service after the active BWP is deactivated. When not configured, the default BWP can be equal to the initial BWP. When configured, the default BWP can be the initial BWP or the BWP remaining after removing the initial / active BWP.

[0084] In this embodiment, when the terminal device is in a Radio Resource Control (RRC) connection state, the network device configures parameter sets for different BWPs (Browser Window Programming) with different numbers of transmit and / or receive antennas via RRCSetup or RCC reconfiguration messages. It should be noted that each parameter set records the configuration resources of the network's BWP to be acquired by the terminal device under different numbers of transmit and / or receive antennas. These configuration resources include, but are not limited to, Synchronization Signal Block (SSB) resources, Channel State Information Reference Signal (CSI-RS) resources, or Sounding Reference Signal (SRS) resources.

[0085] In some embodiments, when the terminal device is in a radio resource control connection state, the network device configures the terminal device with parameter sets for different numbers of transmit antennas and / or receive antennas corresponding to different BWPs through Media Access Control (MAC) control element (CE) messages.

[0086] Step 302: The network device sends the parameter set corresponding to different BWPs to the terminal device.

[0087] In this embodiment of the application, the network device pre-configures a parameter set for each terminal device and then sends it to the terminal device. The parameter set contains parameter sets of multiple different BWPs. Each parameter set records parameter sets under different numbers of transmit antennas and / or receive antennas corresponding to the same BWP.

[0088] It should be noted that since the configuration of the terminal device under different transmit and / or receive antennas of the network device is sent to the terminal device in advance, when the transmit and / or receive antennas of the network device change, the terminal device only needs to determine the set of parameters to be switched. This avoids the problem that the network device sends a reconfiguration message to all affected terminal devices in a short period of time, which would lead to a large system load, high latency, inability to react quickly when the antenna changes, and excessive consumption of PDCCH / PDSCH resources. This advance sending method will not bring additional overhead such as RRC messages / PDCCH / PDSCH, nor will it cause signaling congestion.

[0089] In this embodiment of the application, the network device sends a message to the terminal device that includes a parameter set of different broadband portions, and specifies the parameter set currently used by the terminal device in the message.

[0090] Step 303: The terminal device receives a parameter set configured by the network device for different numbers of transmit antennas and / or receive antennas corresponding to different BWPs via a Radio Resource Control (RRC) Setup message or a Radio Resource Control (RRC) Reconfiguration message.

[0091] Step 304: When the number of transmitting antennas and / or receiving antennas changes or is about to change, the network device sends a wake-up signal to the terminal device.

[0092] The wake-up signal includes first indication information, which indicates at least one of the following:

[0093] The parameter set has changed;

[0094] Wake up the terminal device;

[0095] The terminal device remains in sleep mode.

[0096] In some embodiments, the wake-up signal is a short message, and the nth bit in the short message is the first indication information; where n is a positive integer. It should be noted that the size of the short message field is 8 bits, and the content definition is shown in Table 1.

[0097] Table 1 Short Messages

[0098]

[0099] For example, any one of the 4th to 8th bits reserved in the short message is used as the first indication information. That is, the value of any one of the 4th to 8th bits in the short message is used to indicate at least one of the following three situations: the parameter set has changed; the terminal device is woken up; the terminal device continues to sleep. In an implementable indication scenario, the 5th bit is used to indicate at least one of the following three situations: the parameter set has changed; the terminal device is woken up; the terminal device continues to sleep. Further, when the 5th bit is 0, it is used to indicate that the terminal device continues to sleep; when the 5th bit is 1, it is used to indicate that the terminal device is woken up and / or to indicate that the parameter set has changed. In other words, this application reuses the reserved bits in the existing short message, using any one of the reserved bits in the short message, without modifying the signaling structure, thus improving the efficiency of signaling usage.

[0100] In some embodiments, the first indication information is a first DCI, and the Cyclic Redundancy Check (CRC) of the first DCI is scrambled with a Paging Radio Network Temporary Identifier (P-RNTI). The m-th bit in the reserved bits of the scrambled first DCI format is the first indication information; where m is a positive integer. That is, the value of the m-th bit in the first DCI indicates at least one of the following three conditions: a change in the parameter set; waking up the terminal device; or the terminal device remaining in sleep mode. For example, the first DCI uses the 6th or 8th bit reserved in the P-RNTI-scrambled DCI format 1_0 for operation in a cell with shared spectrum channel access. For example, the 8th bit is used to indicate at least one of waking up the terminal device, indicating that the terminal device remains in sleep mode, or indicating a change in the parameter set. Further, when the 8th bit is 0, it indicates that the terminal device remains in sleep mode; when the 8th bit is 1, it indicates that the terminal device is being woken up and / or indicates a change in the parameter set. In other words, this application reuses the reserved bits of the CRC scrambled by P-RNTI in the existing first DCI. It can use any bit of the CRC scrambled by P-RNTI in the first DCI without modifying the signaling structure, thus improving the efficiency of signaling.

[0101] Step 305: The terminal device receives the wake-up signal sent by the network device.

[0102] Step 306: The network device sends a second instruction message to the terminal device.

[0103] The second indication information is used to indicate the parameter set that the terminal device should switch to.

[0104] In this embodiment of the application, the second indication information is carried by the second DCI.

[0105] In this embodiment, if the wake-up signal received by the terminal device includes first indication information for instructing the terminal device to wake up, the terminal device is woken up to listen for and receive second indication information / second DCI. If the wake-up signal received by the terminal device includes first indication information for instructing the terminal device to continue sleeping, the terminal device continues to sleep without listening for or receiving the second indication information / second DCI.

[0106] In wireless communication scenarios, terminal devices receive wake-up signals such as short messages or first DCIs. The first indication information in the wake-up signal indicates a change in the parameter set. Upon waking, the terminal device listens for changes. If the network device sends a second DCI to the terminal device, the terminal device listens for the second DCI, which carries the parameter set the terminal device wants to switch to. In other words, this application, through a two-level notification mechanism—wake-up plus listening—efficiently sends new configuration information to the terminal device while reducing overhead.

[0107] In this embodiment of the application, the second indication information can also be called parameter set change notification, which efficiently notifies the terminal device of the parameter set to be switched to.

[0108] Combining the two scenarios for sending wake-up signals described above, the network device can notify the terminal device to change the parameter set before turning off or on some physical antennas. After the terminal device receives the second indication information / second DCI, the network device then turns off or on the antennas. Alternatively, the network device can first turn off or on some physical antennas, then notify the terminal device to change the parameter set. After the terminal device receives the second indication information / second DCI, it determines the parameter set to switch to.

[0109] Step 307: The terminal device listens for the second DCI during the paging cycle.

[0110] In this embodiment of the application, the second DCI is a group common DCI.

[0111] In this embodiment of the application, during the paging cycle, the terminal device listens to the group public DCI in a specific search space.

[0112] In this embodiment of the application, in a wireless communication network, paging of terminal devices is generally divided into two categories. One category is used to notify terminal devices in the RRC idle state to perform random access through paging messages, thereby enabling the terminal device to enter the RRC connected state for subsequent data communication. The other category is used to notify terminal devices to receive system information through short messages.

[0113] In some embodiments, during a paging cycle, the terminal device listens for group-common DCIs for a group of UEs in the UE-Specific Search Space (USS). The group-common DCIs for a group of UEs include at least a second DCI carrying identification information of the parameter set to which the terminal device intends to switch.

[0114] Step 308: The terminal device determines the parameter set to switch to based on the second DCI.

[0115] In this embodiment of the application, for each serving cell of the terminal device, the second DCI includes a first field corresponding to the serving cell. The first field is used to indicate the parameter set that the terminal device should hand over to on the serving cell. That is, the terminal device quickly determines the parameter set to hand over to based on the first field in the second DCI.

[0116] In this embodiment, the terminal device determines the parameter set to switch to (i.e., the new parameter set) based on the second DCI. The terminal device switches the current parameter set to the new parameter set and configures the configuration resources indicated in the new parameter set. Thus, by using the second DCI to indicate the parameter set to be switched to, and the terminal device configuring resources according to the parameter set to be switched to, this application eliminates the need for the network device to allocate configuration resources to each UE individually. Furthermore, the UE can quickly respond to changes in the network device's transmit and / or receive antennas, resulting in low latency.

[0117] Step 309: Outside of the paging cycle, the network device sends a first instruction message to the terminal device to instruct the terminal device to continue sleeping.

[0118] In this embodiment of the application, after a period of time, such as after N paging cycles, after the parameter set of the terminal device is successfully switched, the network device sends a first indication message to the terminal device to instruct the terminal device to continue to sleep.

[0119] Step 310: The terminal device receives a first instruction message sent by the network device to instruct the terminal device to continue sleeping.

[0120] In this embodiment of the application, after receiving the instruction information sent by the network device to instruct the terminal device to continue sleeping, the terminal device continues to sleep in order to save power consumption.

[0121] Embodiments of this application provide a terminal device that can be used to implement... Figure 2 , Figure 3 A corresponding embodiment provides a wireless communication method, referring to... Figure 4 As shown, the terminal device 110 includes:

[0122] The receiving module 401 is used for the terminal device to receive a wake-up signal sent by the network device when the number of transmitting antennas and / or receiving antennas changes or is about to change; wherein the wake-up signal includes first indication information, the first indication information being used to indicate at least one of the following: a change in the parameter set; waking up the terminal device; or the terminal device continuing to sleep.

[0123] In other embodiments of this application, the wake-up signal is carried by the first downlink control information (DCI), and the cyclic redundancy check (CRC) of the first DCI is scrambled by the paging radio network temporary identifier (P-RNTI). The m-th bit in the reserved bits of the scrambled first DCI format is the first indication information; where m is a positive integer.

[0124] In other embodiments of this application, the wake-up signal is a short message, and the nth bit in the short message is the first indication information; where n is a positive integer.

[0125] In other embodiments of this application, the receiving module 401 is used for the terminal device to receive second indication information, the second indication information being used to indicate the parameter set to which the terminal device should switch.

[0126] In other embodiments of this application, the second indication information is carried by a second DCI.

[0127] In other embodiments of this application, the first processing module 402 is used for the terminal device to listen to the second DCI during the paging cycle.

[0128] In other embodiments of this application, the second DCI is a group common DCI.

[0129] In other embodiments of this application, for each serving cell of the terminal device, the second DCI includes a first field corresponding to the serving cell, the first field being used to indicate the set of parameters that the terminal device should switch to on the serving cell.

[0130] In other embodiments of this application, the receiving module 401 is used to receive a parameter set configured by the network device for different number of transmit antennas and / or receive antennas corresponding to different bandwidth portions of the BWP, sent by the network device through a Radio Resource Control (RRC) Setup message or a Radio Resource Control (RRC) Reconfiguration message; wherein the parameter set corresponding to different BWPs includes the parameter set that the terminal device needs to switch to.

[0131] The descriptions of the above device embodiments are similar to those of the above method embodiments, and have similar beneficial effects. For technical details not disclosed in the device embodiments of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0132] It should be noted that, in the embodiments of this application, if the above-described test data generation method is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, or the part that contributes to the related technology, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a terminal device to execute all or part of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, mobile hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, the embodiments of this application are not limited to any specific hardware and software combination.

[0133] Embodiments of this application provide a network device that can be used to implement... Figure 2 , Figure 3 A corresponding embodiment provides a wireless communication method, referring to... Figure 5 As shown, the network device 120 includes:

[0134] The sending module 501 is used to send a wake-up signal to the terminal device when the number of transmitting antennas and / or receiving antennas changes or is about to change; wherein the wake-up signal includes first indication information, which indicates at least one of the following: the parameter set has changed; the terminal device is woken up; or the terminal device continues to sleep.

[0135] In other embodiments of this application, the wake-up signal is carried by the first downlink control information (DCI), and the cyclic redundancy check (CRC) of the first DCI is scrambled by the paging radio network temporary identifier (P-RNTI). The m-th bit in the reserved bits of the scrambled first DCI format is the first indication information; where m is a positive integer.

[0136] In other embodiments of this application, the wake-up signal is a short message, and the nth bit in the short message is the first indication information; where n is a positive integer.

[0137] In other embodiments of this application, the sending module 501 is used to send second indication information to the terminal device, the second indication information being used to indicate the parameter set that the terminal device should switch to.

[0138] In other embodiments of this application, the second indication information is carried by a second DCI.

[0139] In other embodiments of this application, the second DCI is a group common DCI.

[0140] In other embodiments of this application, for each serving cell of the terminal device, the second DCI includes a first field corresponding to the serving cell, the first field being used to indicate the set of parameters that the terminal device should switch to on the serving cell.

[0141] In other embodiments of this application, the second processing module 502 is used to configure the terminal device with parameter sets for different numbers of transmit antennas and / or receive antennas corresponding to different bandwidth portions of BWP when the terminal device is in the radio resource control connection state; wherein, the parameter sets corresponding to different BWPs include the parameter sets that the terminal device needs to switch to.

[0142] The sending module 501 is used by the network device to send parameter sets corresponding to different BWPs to the terminal device.

[0143] In other embodiments of this application, the sending module 501 is used to send first indication information to instruct the terminal device to continue sleeping outside of the paging cycle.

[0144] The descriptions of the above device embodiments are similar to those of the above method embodiments, and have similar beneficial effects. For technical details not disclosed in the device embodiments of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0145] It should be noted that, in the embodiments of this application, if the above-described test data generation method is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, or the part that contributes to the related technology, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a terminal device to execute all or part of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, mobile hard drives, ROMs, magnetic disks, or optical disks. Thus, the embodiments of this application are not limited to any specific hardware and software combination.

[0146] Figure 6 This is a schematic structural diagram of a communication device 600 provided in an embodiment of this application. This communication device can be a terminal device or a network device. Figure 6 The communication device 600 shown includes a first processor 610, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0147] Optionally, such as Figure 6As shown, the communication device 600 may further include a first memory 620. The first processor 610 can call and run computer programs from the first memory 620 to implement the methods in the embodiments of this application.

[0148] The first memory 620 can be a separate device independent of the first processor 610, or it can be integrated into the first processor 610.

[0149] Optionally, such as Figure 6 As shown, the communication device 600 may also include a transceiver 630. The first processor 610 can control the transceiver 630 to communicate with other devices. Specifically, it can send information or data to other devices or receive information or data sent by other devices.

[0150] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

[0151] Optionally, the communication device 600 may specifically be a network device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0152] Optionally, the communication device 600 may specifically be a mobile terminal / terminal device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0153] Figure 7 This is a schematic structural diagram of the chip according to an embodiment of this application. Figure 7 The chip 700 shown includes a second processor 710, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0154] Optionally, such as Figure 7 As shown, chip 700 may further include a second memory 720. The second processor 710 can retrieve and run computer programs from the second memory 720 to implement the methods described in this embodiment.

[0155] The second memory 720 can be a separate device independent of the second processor 710, or it can be integrated into the second processor 710.

[0156] Optionally, the chip 700 may also include an input interface 730. The second processor 710 can control the input interface 730 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0157] Optionally, the chip 700 may also include an output interface 740. The second processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0158] Optionally, the chip can be applied to the network device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0159] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0160] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0161] Figure 8 This is a schematic block diagram of a communication system 800 provided in an embodiment of this application. Figure 8 As shown, the communication system 800 includes a terminal device 110 and a network device 120.

[0162] The terminal device 110 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 120 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, these will not be elaborated here.

[0163] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0164] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), or flash memory. The volatile memory can be Random Access Memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0165] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0166] This application also provides a computer-readable storage medium for storing computer programs.

[0167] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0168] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

Claims

1. A method of wireless communication, the method comprising: include: The terminal device receives a wake-up signal sent by the network device when the number of transmitting antennas and / or receiving antennas changes or is about to change; The wake-up signal includes first indication information, which indicates at least one of the following: The parameter set changes; the parameter set is the set of parameters that the network device configures for the terminal device for different numbers of transmit antennas and / or receive antennas corresponding to different bandwidth portions; each parameter set records the configuration resources of the network bandwidth portion that the terminal device needs to obtain under different numbers of transmit antennas and / or receive antennas; the configuration resources include synchronization signal block resources, channel state information reference signal resources, or measurement reference signal resources; The terminal device is awakened to listen in order to receive the second instruction information; The terminal device continues to sleep without listening to or receiving the second indication information; the second indication information is used to indicate the parameter set that the terminal device should switch to.

2. The method of claim 1, wherein, The wake-up signal is carried by the first downlink control information (DCI), and the cyclic redundancy check (CRC) of the first DCI is scrambled by the paging radio network temporary identifier (P-RNTI). The m-th bit in the reserved bits of the scrambled first DCI format is the first indication information; where m is a positive integer.

3. The method of claim 1, wherein, The wake-up signal is a short message, and the nth bit in the short message is the first indication information; where n is a positive integer.

4. The method of claim 1, wherein, After the terminal device receives a wake-up signal sent by the network device in the event that the number of transmit antennas and / or receive antennas has changed or is about to change, the method further includes: The terminal device receives a second indication information, which is used to indicate the parameter set that the terminal device should switch to.

5. The method of claim 4, wherein, The second indication information is carried via a second DCI.

6. The method according to claim 5, characterized in that, The terminal device receives the second instruction information, including: The terminal device listens to the second DCI during the paging cycle.

7. The method according to claim 5 or 6, characterized in that, The second DCI is the group common DCI.

8. The method of claim 5, wherein, For each serving cell of the terminal device, the second DCI includes a first field corresponding to the serving cell, the first field being used to indicate the set of parameters that the terminal device should switch to on the serving cell.

9. The method according to any one of claims 1 to 6 or 8, characterized in that, The method further includes: The network device receives a Radio Resource Control (RRC) Setup message or Radio Resource Control (RRC) Reconfiguration message sent by the network device, which configures a parameter set for the terminal device for different numbers of transmit and / or receive antennas corresponding to different bandwidth portions of the BWP. The parameter sets corresponding to different BWPs include the parameter sets that the terminal device needs to switch to.

10. A method of wireless communication, the method comprising: include: When the number of transmitting and / or receiving antennas changes or is about to change, the network device sends a wake-up signal to the terminal device. The wake-up signal includes first indication information, which indicates at least one of the following: The parameter set changes; the parameter set is the set of parameters that the network device configures for the terminal device for different numbers of transmit antennas and / or receive antennas corresponding to different bandwidth portions; each parameter set records the configuration resources of the network bandwidth portion that the terminal device needs to obtain under different numbers of transmit antennas and / or receive antennas; the configuration resources include synchronization signal block resources, channel state information reference signal resources, or measurement reference signal resources; The terminal device is awakened to listen in order to receive the second instruction information; The terminal device continues to sleep without listening to or receiving the second indication information; the second indication information is used to indicate the parameter set that the terminal device should switch to.

11. The method of claim 10, wherein, The wake-up signal is carried by the first downlink control information (DCI), and the cyclic redundancy check (CRC) of the first DCI is scrambled by the paging radio network temporary identifier (P-RNTI). The m-th bit in the reserved bits of the scrambled first DCI format is the first indication information; where m is a positive integer.

12. The method of claim 10, wherein, The wake-up signal is a short message, and the nth bit in the short message is the first indication information; where n is a positive integer.

13. The method of claim 10, wherein, After the network device sends a wake-up signal to the terminal device when the number of its transmitting and / or receiving antennas changes or is about to change, the method further includes: Send a second instruction to the terminal device, the second instruction being used to indicate the parameter set that the terminal device should switch to.

14. The method of claim 13, wherein, The second indication information is carried via a second DCI.

15. The method of claim 14, wherein, The second DCI is the group common DCI.

16. The method of claim 14, wherein, For each serving cell of the terminal device, the second DCI includes a first field corresponding to the serving cell, the first field being used to indicate the set of parameters that the terminal device should switch to on the serving cell.

17. The method according to any one of claims 10 to 16, characterized in that, The method further includes: When the terminal device is in a radio resource control connection state, the network device configures the terminal device with parameter sets for different numbers of transmit and / or receive antennas corresponding to different bandwidth portions of the BWP by establishing an RRCSetup message or a radio resource control RRC reconfiguration message; wherein, the parameter sets corresponding to different BWPs include the parameter sets that the terminal device wants to switch to; The network device sends parameter sets corresponding to different BWPs to the terminal device.

18. The method according to any one of claims 10 to 16, characterized in that, The method further includes: Outside of the paging cycle, the network device sends the first indication information to instruct the terminal device to continue sleeping.

19. A terminal device, comprising: include: The receiving module is used by the terminal device to receive a wake-up signal sent by the network device when the number of transmitting antennas and / or receiving antennas changes or is about to change. The wake-up signal includes first indication information, which indicates at least one of the following: The parameter set changes; the parameter set is the set of parameters that the network device configures for the terminal device for different numbers of transmit antennas and / or receive antennas corresponding to different bandwidth portions; each parameter set records the configuration resources of the network bandwidth portion that the terminal device needs to obtain under different numbers of transmit antennas and / or receive antennas; the configuration resources include synchronization signal block resources, channel state information reference signal resources, or measurement reference signal resources; The terminal device is awakened to listen in order to receive the second instruction information; The terminal device continues to sleep without listening to or receiving the second indication information; the second indication information is used to indicate the parameter set that the terminal device should switch to.

20. A network device, comprising: include: A transmitting module is configured to send a wake-up signal to a terminal device when the number of transmitting antennas and / or receiving antennas changes or is about to change; wherein the wake-up signal includes first indication information, the first indication information being used to indicate at least one of the following: The parameter set changes; the parameter set is the set of parameters that the network device configures for the terminal device for different numbers of transmit antennas and / or receive antennas corresponding to different bandwidth portions; each parameter set records the configuration resources of the network bandwidth portion that the terminal device needs to obtain under different numbers of transmit antennas and / or receive antennas; the configuration resources include synchronization signal block resources, channel state information reference signal resources, or measurement reference signal resources; The terminal device is awakened to listen in order to receive the second instruction information; The terminal device continues to sleep without listening to or receiving the second indication information; the second indication information is used to indicate the parameter set that the terminal device should switch to.

21. A terminal device, comprising: include: A processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the method as described in any one of claims 1 to 9.

22. A network device, comprising: include: A processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the method as described in any one of claims 10 to 18.

23. A computer-readable storage medium, characterized in that, Used to store a computer program that causes a computer to perform the method as described in any one of claims 1 to 9.

24. A computer-readable storage medium, characterized in that, Used to store a computer program that causes a computer to perform the method as described in any one of claims 10 to 18.

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