Wireless communication method and communication device

Abstract

Provided are a wireless communication method and a communication device. The method comprises: a first terminal device receives a first paging message sent by a network device, wherein the first paging message is carried in a first paging search space, and the first paging search space is determined on the basis of the capability of the first terminal device and / or whether a cell on which the first terminal device camps carries out paging optimization.

Description

Wireless communication method and communication device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method and communication device. Background Art

[0002] In a mobile communication system, when a network device needs to send downlink data to a terminal device that is in an idle or inactive state of radio resource control (RRC), the network device can page the terminal device. The network device needs to transmit the paging message on the paging occasion (PO) corresponding to the terminal device, and the terminal device detects the paging message on the corresponding PO.

[0003] However, there is currently no clear solution on how to increase the flexibility of paging message transmission.

[0004] Summary of the Invention

[0005] The present application provides a wireless communication method and a communication device. The following introduces various aspects involved in the present application.

[0006] In a first aspect, a wireless communication method is provided, including: a first terminal device receives a first paging message sent by a network device, the first paging message is carried in a first paging search space, and the first paging search space is determined based on the capability of the first terminal device and / or whether the cell where the first terminal device resides implements paging optimization.

[0007] According to a second aspect, a terminal device is provided, comprising: a receiving unit for receiving a first paging message sent by a network device, wherein the first paging message is carried in a first paging search space, and the first paging search space is determined based on the capability of the first terminal device and / or whether the cell in which the first terminal device resides implements paging optimization.

[0008] In a third aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps in the method of the first aspect.

[0009] In a fourth aspect, a device is provided, comprising a processor configured to call a program from a memory so that the device executes the method described in the first aspect.

[0010] In a fifth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect.

[0011] In a sixth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect.

[0012] In a seventh aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect.

[0013] In an eighth aspect, a computer program is provided, which enables a computer to execute the method as described in the first aspect.

[0014] In the present application, the network device determines the paging search space (first paging search space) based on the capabilities of the terminal device (first terminal device), and then transmits the first paging message through the first paging search space, which helps the network device to transmit paging based on the capabilities of the terminal device, thereby improving the flexibility of the network device in transmitting paging messages. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a system architecture diagram of a wireless communication system to which an embodiment of the present application may be applied.

[0016] FIG2 shows the position of the PF in the DRX cycle and the position of the PO in the PF.

[0017] FIG3 shows a schematic diagram of PO within PF.

[0018] FIG4 is a flow chart of a communication method.

[0019] FIG5 is a flow chart of a communication method provided in an embodiment of the present application.

[0020] FIG6 is a schematic diagram of a paging optimization method provided in an embodiment of the present application.

[0021] FIG7 is a schematic diagram of another paging optimization method provided in an embodiment of the present application.

[0022] FIG8 is a schematic diagram of another paging optimization method provided in an embodiment of the present application.

[0023] FIG9 is a flowchart of another communication method provided in an embodiment of the present application.

[0024] FIG10 is a flowchart of another communication method provided in an embodiment of the present application.

[0025] FIG11 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.

[0026] FIG12 is a schematic diagram of the structure of the network device provided in an embodiment of the present application.

[0027] FIG13 is a schematic structural diagram of a device to which an embodiment of the present application can be applied. DETAILED DESCRIPTION

[0028] The technical solution in this application will be described below with reference to the accompanying drawings.

[0029] Figure 1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographic area and may communicate with the terminal device 120 within the coverage area.

[0030] FIG1 exemplarily shows a network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0031] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0032] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0033] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through the base station.

[0034] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station can also refer to a communication module, a modem or a chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in device-to-device D2D, vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network equipment.

[0035] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0036] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0037] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0038] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0039] In the NR system, the network device can send paging to the terminal in the RRC idle state or the RRC inactive state, wherein the paging process can be triggered by the core network or the base station. The paging process can be used to send a paging request to the terminal in the RRC idle state, or the paging process can also be used to notify the terminal of system information updates, or the paging process can also notify the terminal to receive alarm information sent by the earthquake and tsunami warning system (ETWS) and the commercial mobile alert system (CMAS).

[0040] If the paging message is initiated by the core network device, the network device will interpret the content of the paging message after receiving it, obtain the tracking area identity (TAI) list of the paged terminal, and then perform air interface paging within the cells belonging to the tracking areas in the list. Typically, to save the overhead of transmitting paging messages, after receiving the paging message sent by the core network device, the base station can aggregate the paging messages corresponding to terminals with the same PO into a single paging message, and ultimately transmit it to the relevant terminals via the paging channel.

[0041] The above-mentioned paging message is carried by the physical downlink shared channel (PDSCH). Before receiving the paging message, the terminal needs to first receive the paging parameters through the system message, and calculate the frame number and PO of the paging frame (PF) where the paging message is located in combination with its own UE_ID. Then, within the PO on the PF, the terminal listens to the physical downlink control channel (PDCCH) encrypted by the paging radio network temporary identity (P-RNTI) to receive the paging indication information, and finally receives the paging message based on the paging indication information.

[0042] The above-mentioned PF represents the frame number of the system frame in which the paging message should appear, and the PO represents the time when the paging message may appear. Figure 2 shows the position of the PF within the DRX cycle and the position of the PO within the PF. As shown in Figure 2, the paging occasions of a UE are evenly distributed among the PFs and POs. The PF is located within the DRX cycle (or paging cycle). A PF may include one or more POs, and multiple POs may correspond to different terminals. However, for a certain terminal, during the DRX cycle, the terminal only needs to monitor its own PO. In other words, a UE only needs to receive paging once within a DRX cycle.

[0043] As described above, the terminal can calculate the PF and PO based on the UE_ID. In some implementations, the system frame corresponding to the system frame number (SFN) that satisfies the formula (SFN+PF_offset) mod T = (T div N) * (UE_ID mod N) can be used as a PF, and within the PF, the index (index) i_s of the PO corresponding to the terminal can be calculated according to the formula i_s = floor (UE_ID / N) mod Ns. Wherein, T represents the cycle length of the DRX cycle of the terminal; UE_ID is used to identify the terminal; N represents the number of PFs in the DRX cycle; Ns represents the number of POs in a PF. PF_offset represents the frame offset of the PF.

[0044] It should be noted that for a terminal, if the default DRX cycle and the DRX cycle configured for the terminal are different, the smaller of the two DRX cycles can be selected as the aforementioned T. That is, T = min(T_UE, T_sib), where T_sib represents the default DRX cycle length indicated in the system message, and T_UE represents the DRX cycle length configured for the terminal. Of course, for a terminal without T_UE configured, the default DRX cycle length indicated in the system message can be used as the value of T, that is, T = T_sib.

[0045] It should also be noted that the above-mentioned UE_ID can be calculated by the formula UE_ID = (5G-S-TMSI mod 1024), where 5G-S-TMSI represents the temporary mobile user identity (TMSI) allocated by the communication system to the terminal.

[0046] In addition, in NR technology, for terminals in RRC idle state or RRC inactive state, the network device does not know which transmit beam to use to send paging messages to the terminal. In order to ensure that the terminal can receive the paging message, the network device uses beam forming to send the paging message. In order to support multi-beam transmission of paging messages, PO can be defined as a set of PDCCH monitoring opportunities, and different PDCCH monitoring opportunities correspond to paging indication information sent through different transmit beams. A PF can include one or more POs or the starting time point of PO.

[0047] The PDCCH search space corresponding to the paging within a PO is notified to the UE by the system message, as shown in Figure 3. The data structure of the configuration message for configuring the paging search space corresponding to Figure 3 is as follows:

[0048] The SearchSpace configuration information is as follows:

[0049] Among them, controlResourceSet is the configuration information of CORESET, which is a set of physical resources, including multiple RBs in the frequency domain and multiple OFDM symbols in the time domain. One search space corresponds to one CORESET_id.

[0050] monitoringSlotPeriodicityAndOffset defines the period and offset value of each time slot.

[0051] duration identifies the number of continuous time slots in each cycle, monitoringSymbolsWithinSlot indicates the starting symbol position in the time slot, nrofCandidates identifies the number of candidates for each type of AL configuration, and searchSpaceType indicates the search space type.

[0052] When the search space identifier SearchSpaceId of the paging search space is 0, since each synchronization signal block (SSB) index corresponds to a PDCCH monitoring opportunity, and different SSB indices correspond to different beams, multiple PDCCH monitoring opportunities in a PO can be associated with transmit beams corresponding to different SSB indices to support multi-beam transmission of paging messages. Typically, the SSBs required to complete a beam scan constitute an "SSB burst."

[0053] For the case where the search space identifier SearchSpaceId of the paging search space is not 0, a PO includes "S*X" consecutive PDCCH monitoring opportunities, where S is the number of SSBs transmitted in the PO, which is indicated by the "ssb-PositionsInBurst" field in the system information block 1 (SIB1). X represents the number of PDCCH monitoring opportunities corresponding to each SSB, which can be indicated by the "nrofPDCCH-MonitoringOccasionPerSSB-InPO" field of the SIB. If this parameter is not configured, X is 1. For the [x*S+K]th PDCCH monitoring opportunity in a PO, it corresponds to the Kth actually transmitted SSB, where x=0,1,…,X-1,K=1,2,…,S. For example, S=8, X=2, then one PO includes 16 PDCCH monitoring opportunities, and the SSB indexes corresponding to the 16 PDCCH monitoring opportunities in chronological order are "0123456701234567", where the index numbers of the first 8 SSBs are 0-7.

[0054] Taking the terminal device as UE, the network device as base station, and the terminal device in IDLE state as an example, this application provides a schematic flow chart of the base station transmitting a paging message when downlink data arrives through Figure 4.

[0055] The data network (DN) stores the address and port number of the user plane function (UPF) where the UE is located, and the access and mobility management function (AMF) stores the tracking area (TA) information of the UE and the capability information of the UE. Among them, TA is a collection of cells. The UE must reside in a cell within this group of cells, but the AMF does not know which specific cell the UE resides in. The current TA information is also stored inside the UE. Every time the UE moves to a new cell, it reads the identifier (ID) of the new cell and compares it with the cell list contained in the TA. If the ID of the new cell is within the cell range of the TA, no process is initiated; if the ID of the new cell is not within the cell range of the TA, a TA update process is initiated. Therefore, for each UE in the IDLE state, the AMF always stores valid TA information.

[0056] Referring to FIG. 4 , in step S402 , when downlink data of the UE arrives, the DN sends the downlink data of the UE to the UPF.

[0057] In step S404, after the downlink data arrives at the UPF, the UPF finds that there is no downlink data channel for the UE, and then notifies the AMF that the UE has data arriving.

[0058] In step S406, after receiving the notification, the AMF queries its stored TA information and determines the list of cells where the UE may reside based on the TA.

[0059] In steps S408 and S410, the AMF sends a paging request of the UE to each cell in the list. The AMF carries the S-TMSI identifier assigned by the core network to the UE in the paging request.

[0060] In step S412, each cell that receives the paging request sends a paging message for the UE via the wireless interface. The specific timing of sending the paging message is calculated based on the S-TMSI. Both the first base station and the second base station send the paging message within their corresponding cells. Because a cell can host multiple UEs, these UEs may have paging requests simultaneously. If the paging timing calculated from the S-TMSIs of these UEs is the same, the cell may include pages for multiple UEs in the same paging message.

[0061] In step S414, after receiving the paging message, the UE initiates an RRC connection to the cell where it resides.

[0062] In step S416, the UE establishes a NAS connection with the corresponding AMF.

[0063] In step S418, the AMF notifies the UPF that the UE is within the cell of the first base station.

[0064] In step S420, the AMF establishes a data channel from the UPF to the first base station to transmit downlink data.

[0065] In step S422, the base station establishes a data channel from the base station to the UE to transmit downlink data.

[0066] In step S412, when the base station sends a paging message to the UE, it cannot determine the UE's location. To ensure that the UE can receive the paging message anywhere in the cell, the base station uses beamforming to send the paging message. This means that the base station can send the paging message in different directions. For example, the base station sends S paging messages within the same PO, corresponding to SSB0, SSB1, and so on to SSB(S-1). The value of S is the same as the number of SSBs in the cell, and the content of these SSBs is exactly the same.

[0067] As mentioned above, the PDCCH search space corresponding to paging within a PO is notified to the terminal device via a system message. Upon receiving the system message, the terminal device determines the paging search space based on the system message. Then, based on the number of SSBs in the cell, each S paging search space forms a PO, and the terminal device listens for paging within the PO. This ensures that paging messages sent within a PO can reach any location within the cell's coverage area.

[0068] Accordingly, the terminal device determines the SSB with the best reception effect in its own position based on the SSB measurement result, and blindly detects the paging search space corresponding to the SSB in the PO. Since the downlink control information (DCI) sent by the network device to the terminal device for scheduling the paging message is encrypted by the paging-radio network temporary identifier (P-RNTI), the terminal device can detect the DCI used to schedule the paging message of the terminal device based on the P-RNTI. If the P-RNTI-encrypted DCI is detected by blind detection, the paging message is received. The data structure of the paging message contains a paging record list. The terminal device determines whether its terminal device identifier is included in the list. If it is, it believes that it has received the page. If not, it believes that it has not been paged.

[0069] With the advancement of communication technology, the concept of network energy saving (NES) has been proposed. NES can reduce the power consumption of network equipment (base stations). Terminal devices residing in NES cells can support paging optimization, allowing them to tolerate longer paging delays. However, after the introduction of the NES mode, there is currently no clear solution for increasing the flexibility of paging message transmission.

[0070] To address the above-mentioned issues, the present application provides a wireless communication method, in which a network device can determine a paging search space based on the capabilities of a terminal device and / or whether the cell in which the terminal device resides implements paging optimization, and then transmit a paging message through the determined paging search space. Accordingly, the terminal device can determine a paging search space based on the capabilities of the terminal device and / or whether the cell in which the terminal device resides implements paging optimization, and monitor paging messages in the corresponding paging search space. This can increase the flexibility of the network device in transmitting paging messages and reduce the power consumption of the network device.

[0071] In addition, to address the above issue, the first terminal device can obtain first information that can be used to indicate whether the cell in which the first terminal device resides implements paging optimization. Through the above solution, the terminal device can determine a paging search space based on whether the cell in which the terminal device resides implements paging optimization and / or the capabilities of the terminal device, and monitor paging messages in the paging search space, thereby increasing the flexibility of network devices in transmitting paging messages.

[0072] In addition, to address the above issue, the first terminal device may send first capability information to the network device, and the first capability information may be used to indicate whether the terminal device supports paging optimization. Through the above solution, the network device may determine a paging search space based on the capabilities of the terminal device and / or whether the cell in which the terminal device resides implements paging optimization, and send a paging message in the corresponding paging search space, thereby increasing the flexibility of the network device in transmitting paging messages.

[0073] The following is a detailed description of the embodiments of the present application. The content described below is applicable to the above-mentioned several solutions. In the absence of conflicts, the various solutions of the embodiments of the present application can be used in combination with each other.

[0074] FIG5 is a flow chart of a wireless communication method according to an embodiment of the present application. The method of FIG5 can be executed by a terminal device and a network device. The terminal device can be, for example, the terminal device 120 mentioned above, and the network device can be, for example, the network device 110 mentioned above.

[0075] In step S510, the first terminal device receives a first paging message sent by the network device.

[0076] In the embodiments of the present application, the network device may support the NES feature or implement paging optimization. In some embodiments, the network device may be an R19 (or Rel-19) or later network device. In some embodiments, as long as the R19 or later network device supports the NES feature, it must implement paging optimization.

[0077] The first terminal device may be any type of terminal device. For example, the terminal device may be a terminal device that supports paging optimization or a terminal device that does not support paging optimization. The paging optimization in the embodiment of the present application may also be replaced by paging enhancement.

[0078] Terminal devices that support paging optimization may include R19 and later terminal devices. Furthermore, terminal devices that support paging optimization may also be R19 and later terminal devices that have indicated to the network device that they support paging optimization or NES paging optimization. Terminal devices that support paging optimization can tolerate longer paging delays. Terminal devices that support paging optimization can reside in an NES cell or can communicate with network devices that support NES features.

[0079] Terminal devices that do not support paging optimization may include terminal devices prior to R19, which are also called ordinary terminal devices. Terminal devices that do not support paging optimization can tolerate shorter paging delays.

[0080] In some implementations, a terminal device that does not support paging optimization cannot reside in an NES cell or cannot communicate with a network device that supports NES features.

[0081] The first paging message may be carried in the PDSCH. The first terminal device receiving the first paging message sent by the network device may refer to the first terminal device receiving the PDSCH sent by the network device. The PDSCH may be scheduled via the PDCCH, or in other words, the PDCCH may be used to indicate the resource location of the PDSCH. The PDCCH may be used to carry paging indication information. The terminal device may receive the paging message by monitoring the PDCCH scrambled by the P-RNTI.

[0082] The first paging message can be carried in the first paging search space. By configuring the first paging search space for the first terminal device, the network device can transmit the first paging message only in the first paging search space. Correspondingly, the first terminal device can monitor the first paging message only in the first paging search space. In this way, both the network device and the terminal device can save power.

[0083] It is understood that the first paging message is carried in the first paging search space, which may mean that the first PDSCH is carried in the first paging search space and / or the first PDCCH is carried in the first paging search space. The first PDSCH is used to carry the first paging message, the first PDCCH is used to schedule the first PDSCH, or the first PDCCH is used to indicate the resource location of the first PDSCH.

[0084] The first paging search space may be determined based on the capabilities of the first terminal device and / or whether the cell in which the first terminal device resides implements paging optimization. The first paging search space may be different depending on the capabilities of the first terminal device and / or the capabilities of the cell in which the first terminal device resides for implementing paging optimization. The capabilities of the first terminal device may include supporting paging optimization or not supporting paging optimization. The capabilities of the cell in which the first terminal device resides for implementing paging optimization may include implementing paging optimization or not implementing paging optimization. If the first terminal device does not support paging optimization and / or the cell in which the first terminal device resides does not implement paging optimization, the first paging search space may be a paging search space determined in a traditional manner, or in other words, the first paging search space may be a paging search space determined in accordance with the scheme described in the background section above. In this case, the first paging search space may be referred to as an old paging search space or an original paging search space. If the first terminal device supports paging optimization and the cell in which the first terminal device resides implements paging optimization, the first paging search space may be a specific paging search space. The specific paging search space may also be referred to as a new paging search space.

[0085] This application can concentrate paging messages for terminal devices that support paging optimization in a specific paging search space for transmission. As the network continues to evolve, more and more terminal devices support paging optimization, while fewer and fewer terminal devices do not support paging optimization. In this way, network devices send fewer and fewer paging messages through the old paging search space, thereby concentrating paging messages in a specific paging search space (or a new paging search space), thereby reducing the power consumption of network devices.

[0086] The following introduces two examples to describe how to set the first paging search space when the first terminal device supports paging optimization.

[0087] Example 1

[0088] In some embodiments, the first paging search space may be a newly added paging search space, and the newly added paging search space may be a paging search space different from the original paging search space. The newly added paging search space here may be a newly added paging search space in the first PO. The first PO may be an original PO or a newly added PO. The newly added PO may be a PO different from the existing PO. If the first PO is a newly added PO, the paging search spaces in the first PO are all newly added paging search spaces. If the first PO is an original PO, the first PO may include both the newly added paging search space and the original paging search space. The network device may add a new PO paging search space for paging optimization on the basis of the existing PO as a newly added paging search space, and use the newly added paging search space as the first paging search space to transmit the first paging message. By adding a new paging search space, the flexibility of the paging search space setting can be increased.

[0089] Taking the first terminal device as an example, if the first terminal device supports paging optimization, the first paging search space can be a paging search space newly added within the first PO, and the first PO can be determined based on the identifier of the first terminal device. For example, the first PO is obtained by the terminal device through calculation based on its own identifier. Exemplarily, the terminal device calculates the first PO based on its own S-TMSI identifier. After the terminal device obtains the first PO, it can receive paging on the paging search space newly added within the first PO. In some embodiments, the first PO can also be referred to as a target PO.

[0090] The embodiments of the present application do not specifically limit the location of the newly added paging search space. As an example, the newly added paging search space can be set at any position within the first PO. As another example, the newly added paging search space can be set between multiple existing paging search spaces within the first PO. Assuming that the existing paging search spaces within the first PO include paging search space 1, paging search space 2, and paging search space 3, the newly added paging search space can be set between paging search space 1 and paging search space 2, and between paging search space 2 and paging search space 3. As another example, the newly added paging search space can be set between any two existing paging search spaces within the first PO. Assuming that the existing paging search spaces within the first PO include paging search space 1, paging search space 2, and paging search space 3, the newly added paging search space can be set between paging search space 1 and paging search space 2, or the newly added paging search space can be set between paging search space 2 and paging search space 3. Taking Figure 6 as an example, the newly added paging search space is set between SSB0 and SSB1. By setting the newly added paging search space between the two original paging search spaces, the time interval between the two newly added paging search spaces can be reduced, thereby helping to reduce the paging delay of the terminal device. Taking Solution 0 in Figure 6 as an example, assuming that the current cell has 4 SSBs, that is, S=4, this paging optimization adds 4 new paging search spaces, corresponding to SSB0 to SSB3 respectively. As can be seen from the figure, the distance between the 4 newly added paging search spaces is relatively close and is smaller than the distance between the original 4 SSBs.

[0091] In addition, since the time interval between the newly added paging search spaces is short, a measurement reference signal can be shared. Therefore, the network device only needs to send a measurement reference signal to the terminal device, and the terminal device only needs to measure the reference signal once, which can reduce the power consumption of the network device and the terminal device. As another example, the newly added paging search space can be set between the first two original paging search spaces in the first PO. Assuming that the original paging search spaces in the first PO include paging search space 1, paging search space 2, and paging search space 3 in chronological order, the newly added paging search space can be set between paging search space 1 and paging search space 2. Taking Figure 6 as an example, the newly added paging search space is set between SSB0 and SSB1. As another example, the newly added paging search space can be set between the last two original paging search spaces in the first PO. Assuming that the original paging search spaces in the first PO include paging search space 1, paging search space 2, and paging search space 3 in chronological order, the newly added paging search space can be set between paging search space 2 and paging search space 3.

[0092] In some embodiments, the time intervals between any two of the newly added paging search spaces can be equal. As shown in Figure 6 , the time intervals between paging search space 0, paging search space 1, paging search space 2, and paging search space 3 are equal. Of course, the time intervals between any two of the newly added paging search spaces can also be unequal, and this is not specifically limited in this embodiment of the present application.

[0093] The embodiments of the present application do not specifically limit the number of newly added paging search spaces. As an example, the number of newly added paging search spaces in the first PO may be equal to the number of beams of the cell. For example, if the number of beams of the cell is S, the number of newly added paging search spaces in the first PO is also S. That is to say, the number of newly added paging search spaces in the first PO is equal to the number of original paging search spaces in the first PO. This can ensure that terminal devices at any location in the cell can receive paging messages and can also avoid waste of resources. Taking Figure 6 as an example, the number of original paging search spaces in the first PO is 4, and the number of SSBs in the first PO is 4, then the number of newly added paging search spaces in the first PO is also 4. As another example, the number of newly added paging search spaces in the first PO may be less than the number of beams of the cell. As another example, the number of newly added paging search spaces in the first PO may be greater than the number of beams of the cell.

[0094] The newly added paging search space can be indicated to the terminal device by the network device, or can be determined by the terminal device itself according to preset rules, or can be predefined by the protocol. For example, the newly added paging search space can be indicated to the terminal device by the network device, and the network device can indicate the time-frequency position of the newly added paging search space to the terminal device through a system message. For another example, the newly added paging search space can be predefined by the protocol, and the protocol can specify the time-frequency position of the newly added paging search space, or the protocol can specify the relative relationship between the time-frequency position of the newly added paging search space and the original PO.

[0095] When monitoring a paging message, the first terminal device can determine the PF and the first PO to be monitored based on the identifier of the first terminal device, and then determine the newly added paging search space according to the system message instructions, or it can directly determine the newly added paging search space according to the system message prompt and monitor the paging message in the newly added paging search space. By adding a new paging search space to the original PO, not only can the resource occupation of the paging search space be reduced, but also the number of parameters for configuring the newly added paging search space can be reduced.

[0096] This example describes this application in detail, using the newly added paging search space as the first paging search space. By adding a new paging search space, terminal devices that support paging optimization can monitor paging messages in the newly added paging search space, while terminal devices that do not support paging optimization only monitor paging messages in the existing paging search space. This approach improves the flexibility of network devices in transmitting paging messages and reduces power consumption.

[0097] In some implementations, the newly added paging search spaces are time-divided, that is, multiple paging search spaces do not overlap in the time dimension. It should be noted that the solution of the embodiment of the present application is not limited to time division, that is, the newly added paging search spaces can be time-divided or frequency-divided. In other words, multiple newly added paging search spaces can be in the same time domain and different frequency points, or in the same frequency point and different time domains. As long as the network device notifies the terminal device of the time-frequency location of the newly added paging search space through a system message, it can be sufficient.

[0098] In some implementations, the newly added paging search space and the original paging search space are time-divided, that is, the newly added paging search space and the original paging search space do not overlap in the time dimension. It should be noted that the solution of the embodiment of the present application is not limited to time division, that is, the newly added paging search space and the original paging search space can be time-divided or frequency-divided. In other words, the newly added paging search space and the original paging search space can be in the same time domain and different frequency points, or in the same frequency point and different time domains. As long as the network device notifies the terminal device of the time-frequency position of the newly added paging search space through a system message, it can be sufficient.

[0099] The above description uses the first PO as an example to describe how to configure the newly added paging search space. It is understood that the newly added paging search space can be dispersed across various PFs and POs to allow different terminal devices to receive paging messages. The configuration of newly added paging search spaces within other POs is similar to the above description and will not be further elaborated here for the sake of brevity.

[0100] Example 2

[0101] In Example 1, this application is described in detail using the newly added first paging search space as an example. In Example 2, the first paging search space can reuse an existing paging search space. Reuse here can be understood as the first paging search space being a portion of the existing paging search space. For example, the first paging search space can include paging search spaces within one or more existing POs. By reusing existing paging search spaces, the resources required for paging can be reduced, avoiding resource waste.

[0102] In some implementations, the first paging search space may include paging search spaces within multiple POs. Taking the multiple POs as an example, if the multiple POs include a second PO and a third PO, the first paging search space may include a paging search space within the second PO and a paging search space within the third PO.

[0103] The embodiment of the present application does not specifically limit the number of multiple POs. The number of multiple POs can be 2, 3, 4, etc. It is understandable that the more paging search spaces are reused, the less resources the first paging search space occupies.

[0104] The embodiments of the present application do not specifically limit the method for determining multiple POs. As an example, multiple POs can be indicated to the first terminal device by a network device. As another example, multiple POs can be predefined by a protocol. As another example, multiple POs can be determined by the first terminal device based on a first parameter. For example, one PO (referred to as a target PO) among the multiple POs can be determined by the first terminal device based on an identifier of the first terminal device (such as S-TMSI), and the other POs among the multiple POs can be determined by the terminal device based on the first parameter and the target PO. The number of other POs can be 1 or more. Taking the example that multiple POs include a second PO and a third PO, the second PO can be determined based on the identifier of the first terminal device, and the third PO can be determined based on the second PO and the first parameter.

[0105] In some embodiments, the first parameter may indicate the distance between the other POs and the target PO. The first parameter may include a single value or multiple values. If the first parameter includes a single value, it indicates that the number of the other POs is one; if the first parameter includes multiple values, it indicates that the number of the other POs is multiple.

[0106] For example, if the first parameter includes parameter K, the other PO can be a PO that is a distance K from the target PO. If K is 1, the other PO is the next PO after the target PO. If K is 2, the other PO is the next PO after the target PO. If the target PO is the last PO in a PF, counting can be started from the first PO in the PF. For example, if the target PO is the last PO in a PF and K is 1, the other PO is the first PO in the PF.

[0107] In some embodiments, the first parameter can be an array. For example, the first parameter can be {K1, K2, K3…Kn}. Then, starting from the target PO, the K1th PO, the K2th PO, the K3th PO, and so on up to the Knth PO can all be defined as other POs. For another example, the first parameter can be defined as {M1, M2, M3…Mn}. Then, starting from the target PO, the M1th PO is the first other PO, the M2th PO is the second other PO, the M3th PO is the third other PO, and so on up to the Mnth PO can all be defined as other POs. Where n is an integer greater than or equal to 1.

[0108] The first parameter may be indicated to the first terminal device by the network device, or the first parameter may be predefined by a protocol. For example, the first parameter may be sent to the first terminal device by the network device via a system message.

[0109] As described above, the first paging search space may include a portion of the paging search space within the plurality of POs. The portion of the paging search space may be indicated to the first terminal device by the network device, or the portion of the paging search space may be agreed upon by the first terminal device and the network device, or the portion of the paging search space may be predefined by a protocol.

[0110] Still taking the example that the multiple POs include the second PO and the third PO, in order to further save power consumption of the network device, the first paging search space may include part of the paging search space within the second PO and part of the paging search space within the third PO.

[0111] In some embodiments, the SSB corresponding to part of the paging search space in the second PO may be different from the SSB corresponding to part of the paging search space in the third PO. In this way, it can be ensured that the same SSB is only sent in one PO, thereby avoiding the same SSB being sent multiple times in different POs, thereby reducing the power consumption of the network device. As shown in Figure 8, the first paging search space may include the paging search space corresponding to SSB0 and SSB2 in the target PO, and the paging search space corresponding to SSB1 and SSB3 in other POs. Of course, in some embodiments, the first paging search space may include the paging search space corresponding to SSB0 and SSB1 in the target PO, and the paging search space corresponding to SSB2 and SSB3 in other POs, and the embodiments of the present application do not specifically limit this.

[0112] In some embodiments, the SSBs corresponding to part of the paging search space in the second PO and the third PO may include all SSBs, thereby ensuring that terminal devices at any location in the cell can receive paging messages.

[0113] For example, as shown in Figure 8, assume that there are four paging search spaces within a PO, that is, S=4, corresponding to SSB0 to SSB3 respectively. Assuming that the first parameter is 1, the multiple POs include one second PO and one third PO, and the third PO is the next PO after the second PO. The terminal device monitors the paging search spaces corresponding to SSB0 and SSB2 within the second PO, and monitors the paging search spaces corresponding to SSB1 and SSB3 within the third PO.

[0114] In some embodiments, the number of partial paging search spaces included in the second PO may be equal to or different from the number of paging search spaces included in the third PO. The following example takes a PO including four paging search spaces as an example. For example, the first paging search space may include two paging search spaces in the second PO and two paging search spaces in the third PO. For another example, the first paging search space may include one paging search space in the second PO and three paging search spaces in the third PO. For another example, the first paging search space may include three paging search spaces in the second PO and one paging search space in the third PO.

[0115] This example describes the present application in detail by taking the first paging search space as a paging search space within multiple POs as an example. By distributing the paging of the terminal device within multiple POs, not only can the flexibility of the network device in transmitting paging messages be improved, but also the power consumption of the network device can be reduced.

[0116] In some embodiments, the first paging message may only carry the paging message of the first terminal device. The first terminal device is a terminal device that supports paging optimization, that is, the first paging message only transmits the paging of the terminal device that supports paging optimization, and does not transmit the paging of the terminal device that does not support paging optimization. For example, there are two terminal devices A and B to be paged, wherein terminal device A does not support paging optimization, and terminal device B supports paging optimization. The network device only transmits the paging of terminal device B in the first paging message, and does not transmit the paging of terminal device A. Correspondingly, for terminal device B that supports paging optimization, it only needs to monitor the first paging message. In some embodiments, the network device can transmit the paging message of terminal device A in the original paging search space.

[0117] In some embodiments, the first paging message may also carry a paging message for the second terminal device, that is, the first paging message may include a paging message for the first terminal device and a paging message for the second terminal device, that is, the first paging message may include paging messages for multiple terminal devices. Among them, the second terminal device may be a terminal device that supports paging optimization or a terminal device that does not support paging optimization. If the second terminal device is a terminal device that does not support paging optimization, the first paging message may simultaneously transmit terminal devices that support paging optimization and terminal devices that do not support paging optimization. In this way, on the one hand, terminal devices that support paging optimization can receive paging messages from POs corresponding to multiple SSBs, and by merging the received paging messages, the success rate of the terminal device receiving the paging message can be improved. On the other hand, the network device is also relatively simple to implement.

[0118] For example, there are two terminal devices, A and B, where terminal device A does not support paging optimization and terminal device B does. The first paging message may include the paging message of terminal device A and the paging message of terminal device B. Correspondingly, both terminal device B, which supports paging optimization, and terminal device A, which does not support paging optimization, can monitor the first paging message.

[0119] When the first paging message carries paging messages of multiple terminal devices, the network device may determine different first paging search spaces according to types of the multiple terminal devices.

[0120] In some embodiments, the network device can determine the first paging search space according to the scheme described in Example 1 or Example 2 above, and then transmit the paging message of the terminal device that supports paging optimization through the first paging search space, and transmit the paging message of the terminal device that does not support paging optimization through the original paging search space, thereby improving the flexibility of the network device in transmitting paging messages.

[0121] As mentioned above, the first paging message can carry paging messages for the first terminal device and the second terminal device. The second terminal device can be a terminal device that supports paging optimization or a terminal device that does not support paging optimization. Correspondingly, the network device can determine the first paging search space based on the capabilities of the second terminal device.

[0122] For example, if the second terminal device is a terminal device that supports paging optimization, the first paging message can be carried only in the newly added paging search space in the first PO, or it can be carried in the newly added paging search space and the second paging search space in the first PO. Here, the newly added paging search space in the first PO is the first paging search space, and the second paging search space is other paging search spaces in the first PO. That is to say, if the second terminal device is a terminal device that supports paging optimization, the first paging message can be sent only in the newly added paging search space, or it can be sent in all paging search spaces in the PO.

[0123] If the network device transmits the first paging message only in the first paging search space, the terminal device can monitor the paging message only in the first paging search space. If the network device transmits the first paging message in both the first paging search space and the second paging search space, the first terminal device can monitor the paging message only in the first paging search space to reduce the power consumption of the terminal device. Alternatively, the first terminal device can monitor the paging message in both the first paging search space and the second paging search space, and by merging the monitored paging messages, the success rate of the first terminal device in receiving the paging message can be improved. Alternatively, the first terminal device can choose whether to monitor the paging message in the first paging search space or the second paging search space, thereby improving the flexibility of the first terminal device in monitoring the paging message.

[0124] For example, taking Figure 6 as an example, terminal device B and terminal device C are terminal devices that support paging optimization. In scheme 0, the network device can transmit the first paging message in the paging search space corresponding to the newly added SSB0-SSB3, and also transmit the first paging message in the paging search space corresponding to the original SSB0-SSB3. Correspondingly, terminal device B and terminal device C can monitor paging messages only in the paging search space corresponding to the newly added SSB0-SSB3, or can also monitor paging messages only in the paging search space corresponding to the original SSB0-SSB3. In scheme 1, the network device transmits the first paging message only in the paging search space corresponding to the newly added SSB0-SSB3. Among them, the first paging message includes the paging messages of terminal device B and terminal device C. Correspondingly, terminal device B and terminal device C can monitor paging messages only in the paging search space corresponding to the newly added SSB0-SSB3.

[0125] If the second terminal device is a terminal device that does not support paging optimization, the first paging message is carried in the newly added paging search space and the second paging search space in the first PO. Among them, the second paging search space is other paging search spaces in the first PO. In other words, if the second terminal device is a terminal device that does not support paging optimization, the first paging message can be sent in all paging search spaces in the entire PO, but cannot be sent only in the newly added paging search space, so as to ensure that any type of terminal device can receive the paging message.

[0126] If the network device transmits the first paging message in both the first paging search space and the second paging search space, the first terminal device can monitor the paging message only in the first paging search space, and the second terminal device can monitor the paging message only in the second paging search space, thereby reducing the power consumption of the terminal devices.

[0127] For example, taking Figure 6 as an example, terminal device A is a terminal device that does not support paging optimization, and terminal device B is a terminal device that supports paging optimization. In solution 6, the network device can transmit the first paging message in the newly added paging search space corresponding to SSB0-SSB3, and also transmit the first paging message in the paging search space corresponding to the original SSB0-SSB3. For terminal device B, it can monitor the paging message only in the paging search space corresponding to the original SSB0-SSB3, or only in the newly added paging search space corresponding to SSB0-SSB3. For terminal device A, it can monitor the paging message only in the paging search space corresponding to the original SSB0-SSB3.

[0128] In some embodiments, if the first terminal device supports paging optimization and the second terminal device does not support paging optimization, the network device may transmit only the paging message of the first terminal device in the first paging search space and transmit the paging message of the first terminal device and the second terminal device in the second paging search space. Correspondingly, the first terminal device may monitor the paging message only in the first paging search space, and the second terminal device may monitor the paging message only in the second paging search space.

[0129] For example, taking Figure 6 as an example, terminal device A is a terminal device that does not support paging optimization, and terminal device B is a terminal device that supports paging optimization. In solution 4, the network device can transmit the paging message of terminal device B in the newly added paging search space corresponding to SSB0-SSB3, and transmit the paging messages of terminal device A and terminal device B in the original paging search space corresponding to SSB0-SSB3. For terminal device B, it can only monitor the paging message in the original paging search space corresponding to SSB0-SSB3, and for terminal device A, it can only monitor the paging message in the original paging search space corresponding to SSB0-SSB3.

[0130] In some embodiments, if the first terminal device supports paging optimization and the second terminal device does not support paging optimization, the network device may transmit paging messages for the first terminal device and the second terminal device in the first paging search space and transmit only paging messages for the second terminal device in the second paging search space. Correspondingly, the first terminal device may monitor paging messages only in the first paging search space, and the second terminal device may monitor paging messages only in the second paging search space.

[0131] For example, taking Figure 6 as an example, terminal device A is a terminal device that does not support paging optimization, and terminal device B is a terminal device that supports paging optimization. In solution 5, the network device can transmit paging messages for terminal device A and terminal device B in the newly added paging search space corresponding to SSB0-SSB3, and transmit the paging message of terminal device A in the original paging search space corresponding to SSB0-SSB3. For terminal device B, it can only monitor paging messages in the newly added paging search space corresponding to SSB0-SSB3, and for terminal device A, it can only monitor paging messages in the original paging search space corresponding to SSB0-SSB3.

[0132] In some embodiments, if the first terminal device supports paging optimization and the second terminal device does not support paging optimization, the network device may transmit paging messages for the first terminal device and the second terminal device only in the second paging search space. Correspondingly, the first terminal device may monitor paging messages only in the second paging search space, and the second terminal device may monitor paging messages only in the second paging search space.

[0133] For example, taking Figure 6 as an example, terminal device A is a terminal device that does not support paging optimization, and terminal device B is a terminal device that supports paging optimization. In solution 3, the network device can transmit paging messages of terminal device A and terminal device B in the original paging search space corresponding to SSB0-SSB3. For terminal device B, it can monitor paging messages in both the original paging search space corresponding to SSB0-SSB3 and the newly added paging search space corresponding to SSB0-SSB3. For terminal device A, it can monitor paging messages only in the original paging search space corresponding to SSB0-SSB3.

[0134] In some implementations, the first paging search space may also be used to transmit a second paging message for a third terminal device, where the third terminal device may include a terminal device that supports paging optimization and a terminal device that does not support paging optimization. The embodiment of the present application does not specifically limit the transmission method of the second paging message.

[0135] As an example, the second paging message and the first paging message can be carried in the same DCI and the same transport block (transport block, TB). As another example, the second paging message and the first paging message can be carried in different DCIs and / or different TBs. As yet another example, the second paging message and the first paging message can be carried in the same DCI and / or different TBs. In some embodiments, if the type of the first terminal device and the type of the third terminal device are different, the second paging message and the first paging message can be carried in different DCIs and / or different TBs. For example, when the network device pages terminal device A and terminal device B, the paging messages of terminal device A and terminal device B can be transmitted respectively through two DCIs and / or two TBs in the same paging search space. By carrying the second paging message and the first paging message in different DCIs and / or different TBs, on the one hand, the flexibility of the network device in transmitting paging messages can be improved, and on the other hand, it is also relatively simple to implement.

[0136] For example, taking Figure 6 as an example, the network device pages terminal device A and terminal device B within the PO, where terminal device B supports paging optimization and terminal device A does not. In solutions 3, 4, and 6, the network device simultaneously transmits paging messages for terminal device A and terminal device B in the original paging search space. The network device can transmit paging messages for terminal device A and terminal device B separately in the same paging search space through two DCIs and two TBs. In other words, the terminal device can transmit two paging messages in one paging search space, one for paging terminal device A and one for paging terminal device B.

[0137] In some embodiments, the network device may transmit paging messages for terminal device A and terminal device B within the same paging search space using the same DCI and different TBs. That is, two TBs may be invoked in one DCI, one TB being used to transmit the second paging message and the other being used to transmit the first paging message. The second paging message is used to page terminal device A, and the first paging message is used to page terminal device B.

[0138] Of course, in other embodiments, the network device can transmit paging messages of terminal device A and terminal device B through the same DCI and TB in the same paging search space, that is, one paging message contains paging messages of terminal device A and terminal device B.

[0139] In some implementations, the first paging search space is a paging search space corresponding to a portion of the SSBs that the network device can send, thereby reducing the power consumption of the network device. In some embodiments, the portion of the SSBs is determined based on the location of the first terminal device. If the network device has a rough idea of ​​the terminal device's geographic location, it may send paging messages only in the paging search space corresponding to a portion of the SSBs. In some embodiments, the network device may prioritize sending paging messages in the paging search space corresponding to a portion of the SSBs, and then send paging messages in the search space corresponding to all SSBs.

[0140] For example, taking Scheme 0 and Scheme 1 in Figure 6 as an example, if the network device knows that terminal device B and terminal device C are within the coverage of SSB1, the network device can only send paging messages in the paging search space corresponding to SSB1, thereby reducing the power consumption of the network device. In some embodiments, the network device may also first send a paging message in the paging search space corresponding to SSB1, and then send a paging message in the paging search space corresponding to other SSBs, or the network device may first send a paging message in the paging search space corresponding to SSB1, and then send a paging message in the paging search space corresponding to all SSBs. For another example, if the network device knows that terminal device B is within the coverage of SSB1 and terminal device C is within the coverage of SSB3, the network device may only send a paging message in the paging search space corresponding to SSB1 and SSB3. The above operations are transparent to the terminal devices.

[0141] The terminal device in the embodiments of the present application may support multi-antenna reception. There are two implementation methods for multi-antenna reception: digital multi-antenna reception and analog multi-antenna reception. A terminal device may support either method, depending on its capabilities. If the terminal supports digital multi-antenna reception, it can receive multiple beams simultaneously. If the terminal only supports analog multi-antenna reception, it can only receive beams in one direction at a time.

[0142] In some embodiments, if the first terminal device has digital multi-antenna reception capability, the network device can transmit the first paging message on multiple beams of one paging search space in the first paging search space, so that the network device can transmit the first paging message only on part of the paging search space to reduce the power consumption of the network device. For example, assuming that the first paging search space includes paging search space 0 to paging search space 3, and the beams corresponding to the network device include beams 0 to beam 3, the network device can send beam 0 and beam 1 in paging search space 0, and send beam 2 and beam 3 in paging search space, so that all beams can be sent through two paging search spaces. Each beam carries the first paging message.

[0143] In some embodiments, the first paging message can carry paging messages for multiple terminal devices. The network device can determine the method for sending the first paging message based on the multi-antenna reception capabilities of the multiple terminal devices. This is illustrated below with reference to Figure 7. In the solution shown in Figure 7, the network device pages terminal device B and terminal device C within the PO, and both terminal device B and terminal device C support paging optimization.

[0144] If both terminal device B and terminal device C support simulated multi-antenna reception, the network device can only send paging messages within the PO corresponding to all SSBs, as shown in Solution 1 in Figure 7. The network device can transmit paging messages in all four newly added paging search spaces, sending a beam in each paging search space, and each beam is used to carry paging messages for terminal device B and terminal device C.

[0145] If both terminal devices B and C support digital multi-antenna reception, the network device can simultaneously send paging messages to the terminal devices using multiple beams. The network device can transmit paging messages in only some paging search spaces. For example, in Solution 2 in Figure 7, the network device can send paging messages in only two paging search spaces: one paging search space for beams 1 and 1, and the other for beams 2 and 3. Each beam carries paging messages for both terminal devices B and C.

[0146] If terminal device B supports digital multi-antenna reception and terminal device C supports analog multi-antenna reception, the network device can send paging messages through multiple beams within a portion of the paging search space, with each beam corresponding to a different SSB. As shown in Solution 3 in Figure 7, the network device can send multiple beams in the first and third paging search spaces, and send one beam in the second and fourth paging search spaces. The first paging search space is used to send beams 0 and 1, and the third paging search space is used to send beams 2 and 3. Each beam is used to carry paging messages for terminal device B and terminal device C. As shown in Solution 4 in Figure 7, the network device can send multiple beams in the first and third paging search spaces, and send one beam in the second and fourth paging search spaces. The first paging search space is used to send beams 0 and 1, and the third paging search space is used to send beams 2 and 3. The first and third paging search spaces are used to send paging messages for terminal device B and terminal device C. The second paging search space and the fourth paging search space are only used to send paging messages of terminal device C.

[0147] The following takes the network device as a base station as an example, combined with two more specific examples, to elaborate on the solution of the embodiment of the present application.

[0148] Example 1

[0149] Example 1 describes a solution in which the first paging search space is a newly added paging search space.

[0150] Continuing to refer to Figure 6, the base station adds a new PO for paging optimization on the basis of the existing PO as a newly added paging search space, and uses the newly added paging search space as the first paging search space to transmit the first paging message. The newly added PO here is time-divided from the original PO, that is, multiple paging search spaces do not overlap in the time dimension. It should be noted that the solution of the embodiment of the present application is not limited to time division, that is, the newly added paging search spaces can be time-divided or frequency-divided.

[0151] In Figure 6, assuming that the current cell has four SSBs, that is, S=4, this paging optimization adds four new paging search spaces, corresponding to SSB0 to SSB3. The newly added paging search spaces are indicated to the terminal device by the base station. For example, the base station can indicate the newly added paging search spaces to the terminal device through a system message. Only terminal devices that support paging optimization can read the parameters related to the newly added paging search spaces and thus know the newly added four paging search spaces. Terminal devices that do not support paging optimization cannot perceive the existence of the four newly added paging search spaces.

[0152] Solution 0 and Solution 1 in Figure 6 correspond to the scenario where all the multiple terminal devices sending paging in this PO support paging optimization. For example, the base station pages terminal device B and terminal device C in the PO, and both terminal device B and terminal device C support paging optimization.

[0153] In solution 0, the base station transmits the first paging message in the newly added paging search space corresponding to SSB0-SSB3, and also transmits the first paging message in the paging search space corresponding to the original SSB0-SSB3. Correspondingly, terminal devices B and C can monitor paging messages only in the newly added paging search space corresponding to SSB0-SSB3, or they can also monitor paging messages only in the paging search space corresponding to the original SSB0-SSB3. The terminal device behavior is more flexible, but the base station consumes relatively high power.

[0154] In Solution 1, the base station transmits the first paging message only in the newly added paging search space corresponding to SSB0-SSB3, and not in the existing paging search space corresponding to SSB0-SSB3. The first paging message includes paging messages for terminal devices B and C. Accordingly, terminal devices B and C monitor paging messages only in the newly added paging search space corresponding to SSB0-SSB3. Compared to Solution 0, the base station in Solution 1 consumes less power.

[0155] Schemes 2 to 6 in Figure 6 correspond to scenarios where some of the multiple terminal devices sending paging messages within this PO support paging optimization. For example, the base station pages terminal device A and terminal device B within the PO, where terminal device A does not support paging optimization and terminal device B supports paging optimization.

[0156] In solution 2, the base station transmits the paging message of terminal device A in the original paging search space corresponding to SSB0-SSB3, and transmits the paging message of terminal device B in the newly added paging search space corresponding to SSB0-SSB3. Terminal device B can monitor the paging message only in the newly added paging search space corresponding to SSB0-SSB3, while terminal device A can monitor the paging message only in the original paging search space corresponding to SSB0-SSB3.

[0157] In Solution 3, the base station transmits paging messages for terminal devices A and B in the existing paging search spaces corresponding to SSB0-SSB3. Terminal device B can monitor paging messages in both the existing paging search spaces corresponding to SSB0-SSB3 and the newly added paging search spaces corresponding to SSB0-SSB3. Terminal device A can also monitor paging messages only in the existing paging search spaces corresponding to SSB0-SSB3. Therefore, compared with Solution 2, Solution 3 increases terminal device power consumption while reduces base station power consumption.

[0158] In Solution 4, the base station transmits paging messages for terminal device B in the newly added paging search space corresponding to SSB0-SSB3, and transmits paging messages for terminal devices A and B in the existing paging search space corresponding to SSB0-SSB3. Terminal device B can monitor paging messages only in the existing paging search space corresponding to SSB0-SSB3, or only in the newly added paging search space corresponding to SSB0-SSB3. Terminal device B can determine which paging search spaces to monitor paging messages in. Terminal device A can monitor paging messages only in the existing paging search space corresponding to SSB0-SSB3. Terminal device behavior is more flexible, and base station power consumption is comparable to Solution 2.

[0159] In solution 5, the base station transmits paging messages for terminal devices A and B in the newly added paging search spaces corresponding to SSB0-SSB3, and transmits paging messages for terminal device A in the existing paging search spaces corresponding to SSB0-SSB3. Terminal device B can monitor paging messages only in the newly added paging search spaces corresponding to SSB0-SSB3, while terminal device A can monitor paging messages only in the existing paging search spaces corresponding to SSB0-SSB3. The terminal devices consume less power, but the base station consumes more power.

[0160] In solution 6, the base station transmits the first paging message in the newly added paging search space corresponding to SSB0-SSB3, and also transmits the first paging message in the paging search space corresponding to the original SSB0-SSB3. For terminal device B, it can monitor paging messages only in the paging search space corresponding to the original SSB0-SSB3, or it can monitor paging messages only in the newly added paging search space corresponding to SSB0-SSB3. The specific paging search space to monitor paging messages can be determined by terminal device B. For terminal device A, it can monitor paging messages only in the paging search space corresponding to the original SSB0-SSB3. The behavior of the terminal device is more flexible, but the power consumption of the base station is relatively high.

[0161] By comparison, if both Scheme 1 and Scheme 3 are adopted, the base station consumes the least power. However, since terminal devices cannot sense whether other terminal devices paging within the PO support paging optimization, they need to monitor paging messages in both the original SSB0-SSB3 paging search space and the newly added SSB0-SSB3 paging search space. This results in relatively higher power consumption for terminal devices supporting paging optimization.

[0162] If both Option 1 and Option 2 are adopted at the same time, the power consumption of the base station is low, and the power consumption of the terminal equipment that supports paging optimization is also low, so it is the best choice.

[0163] The embodiments of this application do not specifically limit the paging scheme to be adopted. In some implementations, a protocol may specify the adoption of a single paging scheme. In other implementations, a protocol may specify multiple schemes, and the base station may select one of them as the final scheme and notify the terminal device via a system message. Terminal devices that support paging optimization may determine which paging search spaces to monitor for paging based on the system message instructions.

[0164] This example describes this application in detail, using the newly added paging search space as the first paging search space. By adding a new paging search space, terminal devices that support paging optimization can monitor paging messages in the newly added paging search space, while terminal devices that do not support paging optimization only monitor paging messages in the existing paging search space. This approach improves the flexibility of network devices in transmitting paging messages and reduces power consumption.

[0165] On the other hand, as the network continues to evolve, more and more terminal devices support paging optimization, while fewer and fewer terminal devices do not support paging optimization. As a result, the base station sends fewer and fewer pages through the original paging search space. If a paging search space does not correspond to a terminal device, the base station can not send a page, thereby concentrating the paging in the newly added paging search space. Because the time interval between the newly added paging search spaces is small, they can share a measurement reference signal. Therefore, the network device only needs to send one measurement reference signal to the terminal device, and the terminal device only needs to measure the reference signal once, which can reduce the power consumption of the network device and the terminal device.

[0166] Example 2

[0167] Example 2 describes a solution where the first paging search space reuses an existing paging search space. The first paging search space is a paging search space within multiple POs, which include a second PO and a third PO. For ease of description, in this example, the second PO is referred to as the target PO, and the third PO is referred to as the other PO.

[0168] As shown in Figure 8, there are multiple POs within the current PF. Each PO has four paging search spaces (S = 4), corresponding to SSB0 to SSB3. The terminal device calculates the target PO. Assuming the first parameter is 1, the multiple POs include one target PO and one other PO, which is the next PO after the target PO.

[0169] The embodiment of the present application does not impose any specific limitation on the paging search space monitored by the target PO and other POs, as long as the terminal device monitors the paging search space corresponding to all SSBs, and the SSBs corresponding to the paging search space in the target PO and other POs are different.

[0170] As shown in Figure 8, the first paging search space may include the paging search space corresponding to SSB0 and SSB2 in the target PO, and the paging search space corresponding to SSB1 and SSB3 in other POs. Of course, in some embodiments, the first paging search space may include the paging search space corresponding to SSB0 and SSB1 in the target PO, and the paging search space corresponding to SSB2 and SSB3 in other POs.

[0171] This example describes the present application in detail by taking the first paging search space as a paging search space within multiple POs as an example. By distributing the paging of the terminal device within multiple POs, not only can the flexibility of the network device in transmitting paging messages be improved, but also the power consumption of the network device can be reduced.

[0172] On the other hand, as networks continue to evolve, more and more terminal devices support paging optimization, while fewer and fewer terminal devices do not. Consequently, the paging search spaces originally used to transmit messages to terminal devices that do not support paging optimization are sending fewer and fewer pages. If a paging search space has no corresponding terminal device, the base station can choose not to send a page, thereby concentrating the paging in a certain paging search space and reducing base station power consumption.

[0173] In some implementations, before the first terminal device receives the first paging message sent by the network device, the first terminal device may send first capability information to the network device. The first capability information is used to indicate whether the first terminal device supports paging optimization, or in other words, the first capability information is used to indicate whether the first terminal device has the capability of paging optimization. Of course, after the first terminal device sends the first capability information to the network device, whether the network device uses the paging optimization method to send the paging message belongs to the implementation of the network device. That is to say, after the first terminal device sends the first capability information to the network device, the network device may send the paging message using the paging optimization method or not.

[0174] The embodiment of the present application does not specifically limit the carrying method of the first capability information. As an example, the first capability information can be carried in a radio resource control (RRC) message, that is, the first terminal device can report the first capability information through an RRC message. As another example, the first capability information can be carried in a medium access control control element (MAC CE), that is, the first terminal device can report the first capability information through a MAC CE.

[0175] In some embodiments, if the first capability information is carried by an RRC message, the RRC message may be a UE capability reporting message and / or a UE assistance information reporting message (or referred to as a UE assistance message).

[0176] In some embodiments, if the RRC message is a UE capability reporting message, the first capability information is also used to be stored in the AMF. For example, the network device can send the first capability information to the AMF so that the AMF stores the first capability information in the AMF. After the first capability information is stored in the AMF, the network device can directly obtain the first capability information from the AMF when the first terminal device accesses next time, and the first terminal device does not need to report the first capability information again, thereby reducing the overhead of air interface signaling. When the AMF receives "data has arrived at the first terminal device", the AMF can query the capabilities of the first terminal device stored in it to determine whether the first terminal device supports paging optimization. The AMF can notify the network device of the capabilities of the first terminal device through a paging request message.

[0177] In some embodiments, if the RRC message is a UE auxiliary information reporting message, the AMF will not store the first capability information. Therefore, the first terminal device needs to report the first capability information again when it accesses next time.

[0178] In some implementations, before the first terminal device receives the first paging message sent by the network device, the first terminal device may further obtain first information. The first information is used to indicate whether the cell where the first terminal device resides implements paging optimization.

[0179] The embodiments of the present application do not specifically limit the manner in which the first information is carried. As an example, the first information may be carried in system information (or system message), that is, the first terminal device may obtain the first information through the system information. As another example, the first information may be carried in a system information block (SIB). The SIB may be SIB1, or the SIB may be other SIBs such as SIB2 and SIB3.

[0180] In some embodiments, the first information may explicitly or implicitly indicate whether the cell where the first terminal device resides implements paging optimization. For example, the first information may indicate whether the cell where the first terminal device resides implements paging optimization by one or more of the following: the value of the first variable; the presence of the second parameter. The cell where the terminal device resides may also be referred to as the current cell. The above situations are illustrated below with examples.

[0181] In some embodiments, the first information may indicate whether the cell where the first terminal device resides implements paging optimization through the value of the first variable, and this indication method may be understood as an explicit indication method. In some embodiments, the first variable may be a Boolean variable or an enumeration variable.

[0182] The embodiment of the present application does not specifically limit the number of bits occupied by the first variable. For example, the number of bits occupied by the first variable can be 1 or more.

[0183] If the first variable is a Boolean variable, then when the first variable takes the first value, it indicates that the cell where the first terminal device resides implements paging optimization; when the first variable takes the second value, it indicates that the cell where the first terminal device resides does not implement paging optimization. Taking the first variable occupying one bit as an example, when the first variable takes the value of 1, it indicates that the cell where the first terminal device resides implements paging optimization; when the first variable takes the value of 0, it indicates that the cell where the first terminal device resides does not implement paging optimization. Alternatively, when the first variable takes the value of 0, it indicates that the cell where the first terminal device resides implements paging optimization; when the first variable takes the value of 1, it indicates that the cell where the first terminal device resides does not implement paging optimization.

[0184] If the first variable is an enumeration type variable, the presence of the second parameter indicates that paging optimization is implemented in the cell where the first terminal device resides; if the second parameter is absent, it indicates that paging optimization is not implemented in the cell where the first terminal device resides. Alternatively, if the second parameter is absent, it indicates that paging optimization is implemented in the cell where the first terminal device resides; if the second parameter is present, it indicates that paging optimization is not implemented in the cell where the first terminal device resides. The second parameter can be the first variable.

[0185] In some embodiments, the first information may implicitly indicate whether the cell where the first terminal device resides implements paging optimization through a second parameter. The second parameter may be a newly defined parameter. For example, the second parameter may be a parameter of an additional paging search space. For example, based on the data structure of the configuration message of the paging search space above, some additional parameters may be introduced to define a new paging search space. The additionally introduced parameter is the second parameter. If the second parameter exists, it indicates that the cell where the first terminal device resides implements paging optimization; if the second parameter does not exist, it indicates that the cell where the first terminal device resides does not implement paging optimization; or, if the second parameter does not exist, it indicates that the cell where the first terminal device resides implements paging optimization; if the second parameter exists, it indicates that the cell where the first terminal device resides does not implement paging optimization.

[0186] In other implementations, a protocol may specify whether the cell where the first terminal device resides implements paging optimization. For example, if a network device of R19 or later supports the NES feature, the cell corresponding to the network device must implement paging optimization.

[0187] The first terminal device and the network device may determine whether paging transmission is optimized based on the first capability information and the first information. If paging transmission is optimized, the network device may send the paging message in the manner described above, and the first terminal device may monitor the paging message in the manner described above; if paging transmission is not optimized, the network device may send the paging message in a traditional manner, and the first terminal device may monitor the paging message in a traditional manner.

[0188] According to the difference in the first capability information and the first information, it can be subdivided into six scenarios, as shown in Table 1.

[0189] As shown in Table 1, paging sent over the air interface will be optimized only when the network equipment supports paging optimization and all or some of the multiple terminal devices sending paging in this PO support paging optimization, as shown in Scenario 1 and Scenario 5 in Table 1.

[0190] Taking the terminal device as UE and the network device as a base station as an example, the following text provides a more detailed example of the base station determining whether to implement paging optimization for the UE in conjunction with Figure 9.

[0191] In step S910 , the UE reports its capability to the base station, that is, sends first capability information.

[0192] In step S920, if the UE reports through the terminal device capability message, the base station reports the UE capability to the AMF, and the AMF stores the terminal device capability information.

[0193] In step S930, the DN receives downlink data.

[0194] In step S940, the DN sends the downlink data to the UPF.

[0195] In step S950, after the downlink data reaches the UPF, the UPF finds that there is no downlink data channel for the terminal device, and then notifies the AMF that data has arrived.

[0196] In step S960, the UE determines whether paging optimization is implemented in the cell where it is located.

[0197] In step S970, when the AMF receives the notification that data has arrived, the AMF queries its stored terminal device capabilities to determine whether the UE supports paging optimization, and notifies the base station of the message in the form of a paging request.

[0198] In step S980, after receiving the paging request, the base station determines whether the cell where the UE is located implements paging optimization, and sends a paging message to the UE.

[0199] Table 1: Paging optimization scenarios for the first terminal device

[0200] In some implementations, when the AMF sends a paging request to the base station, it may notify the UE of its ability to support digital multi-antenna reception or analog multi-antenna reception. The base station may determine the specific paging transmission method based on the capabilities of multiple UEs to be paged within the same PO.

[0201] As shown in Figure 10, when the AMF sends a paging request for the UE to the base station, the paging request carries the capability of whether the UE supports analog / digital multi-antenna reception. After receiving the paging request, the base station first determines the specific paging sending method and then sends the paging to the UE.

[0202] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 10. The device embodiment of the present application is described in detail below in conjunction with Figures 11 to 16. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0203] FIG11 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. The terminal device 1100 shown in FIG11 may include a receiving unit 1110. The receiving unit 1110 may be configured to receive a first paging message sent by a network device, where the first paging message is carried in a first paging search space, where the first paging search space is determined based on the capabilities of the first terminal device and / or whether the cell in which the first terminal device resides implements paging optimization.

[0204] In some implementations, the first terminal device is a terminal device that supports paging optimization, the first paging search space is a newly added paging search space, or the first paging search space is a paging search space within multiple POs.

[0205] In some implementations, the first paging search space is a paging search space newly added within a first PO, and the first PO is determined based on an identifier of the terminal device.

[0206] In some implementations, the first paging message also includes a paging message for a second terminal device, and the second terminal device is a terminal device that supports paging optimization or a terminal device that does not support paging optimization.

[0207] In some implementations, if the second terminal device is a terminal device that supports paging optimization, the first paging message is only carried in the paging search space newly added within the first PO, or the first paging message is carried in the paging search space newly added within the first PO and the second paging search space, and the second paging search space is other paging search spaces within the first PO.

[0208] In some implementations, if the second terminal device is a terminal device that does not support paging optimization, the first paging message is carried in the newly added paging search space and the second paging search space within the first PO, and the second paging search space is other paging search spaces within the first PO.

[0209] In some implementations, the first paging search space is also used to transmit a second paging message for a third terminal device, and the second paging message and the first paging message are carried in different DCIs and / or different transmission blocks.

[0210] In some implementations, the first paging search space is a paging search space corresponding to some SSBs among the SSBs that the network device can send.

[0211] In some implementations, the partial SSB is determined based on the location of the first terminal device.

[0212] In some implementations, if the first terminal device has digital multi-antenna reception capability, one of the first paging search spaces is used to transmit the first paging message on multiple beams.

[0213] In some implementations, the multiple POs include a second PO and a third PO, the second PO is determined based on an identifier of the first terminal device, and the third PO is determined based on the second PO and the first parameter.

[0214] In some implementations, the first parameter is sent to the first terminal device via a system message.

[0215] In some implementations, the first paging search space includes a portion of the paging search space within the second PO and a portion of the paging search space within the third PO.

[0216] In some implementations, the SSB corresponding to the portion of the paging search space within the second PO is different from the SSB corresponding to the portion of the paging search space within the third PO.

[0217] In some implementations, the third PO includes one or more POs.

[0218] In some implementations, the terminal device 1100 further includes: a sending unit, configured to send first capability information to the network device, where the first capability information is used to indicate whether the terminal device supports paging optimization.

[0219] In some implementations, the first capability information is carried in an RRC message or a MAC CE.

[0220] In some implementations, the RRC message includes a UE capability reporting message and / or a UE assistance information reporting message.

[0221] In some implementations, if the RRC message is a UE capability reporting message, the first capability information is also stored in the AMF.

[0222] In some implementations, the terminal device 1100 further includes: an acquisition unit, configured to acquire first information, where the first information is used to indicate whether the cell where the first terminal device resides implements paging optimization.

[0223] In some implementations, the first information is carried in system information or SIB.

[0224] In some implementations, the first information indicates whether paging optimization is implemented in the cell where the first terminal device resides through one or more of the following methods: the value of the first variable; whether the second parameter exists.

[0225] In some implementations, the terminal device 1100 further includes: a determining unit, configured to determine the first paging search space based on the capability of the first terminal device and the first information.

[0226] Figure 12 is a schematic diagram of the structure of a network device provided in an embodiment of the present application. The network device 1200 shown in Figure 12 may include a sending unit 1210. The sending unit 1210 is configured to send a first paging message to a terminal device, where the first paging message is carried in a first paging search space, where the first paging search space is determined based on the capabilities of the first terminal device and / or whether the cell in which the first terminal device resides implements paging optimization.

[0227] In some implementations, the first terminal device is a terminal device that supports paging optimization, the first paging search space is a newly added paging search space, or the first paging search space is a paging search space within multiple POs.

[0228] In some implementations, the first paging search space is a paging search space newly added within a first PO, and the first PO is determined based on an identifier of the terminal device.

[0229] In some implementations, the first paging message also includes a paging message for a second terminal device, and the second terminal device is a terminal device that supports paging optimization or a terminal device that does not support paging optimization.

[0230] In some implementations, if the second terminal device is a terminal device that supports paging optimization, the first paging message is only carried in the paging search space newly added within the first PO, or the first paging message is carried in the paging search space newly added within the first PO and the second paging search space, and the second paging search space is other paging search spaces within the first PO.

[0231] In some implementations, if the second terminal device is a terminal device that does not support paging optimization, the first paging message is carried in the newly added paging search space and the second paging search space within the first PO, and the second paging search space is other paging search spaces within the first PO.

[0232] In some implementations, the first paging search space is also used to transmit a second paging message for a third terminal device, and the second paging message and the first paging message are carried in different DCIs and / or different transmission blocks.

[0233] In some implementations, the first paging search space is a paging search space corresponding to some SSBs among the SSBs that the network device can send.

[0234] In some implementations, the partial SSB is determined based on the location of the first terminal device.

[0235] In some implementations, if the first terminal device has digital multi-antenna reception capability, one of the first paging search spaces is used to transmit the first paging message on multiple beams.

[0236] In some implementations, the multiple POs include a second PO and a third PO, the second PO is determined based on an identifier of the first terminal device, and the third PO is determined based on the second PO and the first parameter.

[0237] In some implementations, the first parameter is sent to the first terminal device via a system message.

[0238] In some implementations, the first paging search space includes a portion of the paging search space within the second PO and a portion of the paging search space within the third PO.

[0239] In some implementations, the SSB corresponding to the portion of the paging search space within the second PO is different from the SSB corresponding to the portion of the paging search space within the third PO.

[0240] In some implementations, the third PO includes one or more POs.

[0241] In some implementations, the network device 1200 further includes: a receiving unit, configured to receive first capability information sent by the terminal device, where the first capability information is used to indicate whether the terminal device supports paging optimization.

[0242] In some implementations, the first capability information is carried in an RRC message or a MAC CE.

[0243] In some implementations, the RRC message includes a UE capability reporting message and / or a UE assistance information reporting message.

[0244] In some implementations, if the RRC message is a UE capability reporting message, the first capability information is also stored in the AMF.

[0245] In some implementations, the sending unit is further used to: send first information to the terminal device, where the first information is used to indicate whether the cell where the first terminal device resides implements paging optimization.

[0246] In some implementations, the first information is carried in system information or SIB.

[0247] In some implementations, the first information indicates whether paging optimization is implemented in the cell where the first terminal device resides through one or more of the following methods: the value of the first variable; whether the second parameter exists.

[0248] Figure 13 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 13 indicate that the unit or module is optional. Apparatus 1300 may be used to implement the method described in the above method embodiment. Apparatus 1300 may be a chip, a terminal device, or a network device.

[0249] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the above method embodiment. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0250] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store programs that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the above method embodiments. The memories 1320 may be independent of the processor 1310 or integrated into the processor 1310.

[0251] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips via the transceiver 1330.

[0252] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0253] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0254] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0255] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0256] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0257] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0258] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0259] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0260] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0261] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0262] In 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.

[0263] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0264] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0265] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0266] 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 instructions are 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 device. The computer instructions 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 instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0267] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The first terminal device receives a first paging message sent by a network device, where the first paging message is carried in a first paging search space, which is determined based on the capability of the first terminal device and / or whether a cell where the first terminal device resides implements paging optimization.

2. The method according to claim 1, characterized in that The first terminal device is a terminal device supporting paging optimization, the first paging search space is a newly added paging search space, or the first paging search space is a paging search space within multiple paging occasions PO.

3. The method according to claim 2, characterized in that The first paging search space is a paging search space newly added in the first PO, and the first PO is determined based on the identifier of the first terminal device.

4. The method according to claim 3, characterized in that The first paging message also includes a paging message for a second terminal device, where the second terminal device is a terminal device that supports paging optimization or a terminal device that does not support paging optimization.

5. The method according to claim 4, characterized in that If the second terminal device is a terminal device that supports paging optimization, the first paging message is only carried in the paging search space newly added in the first PO, or The first paging message is carried in a paging search space newly added in the first PO and a second paging search space, where the second paging search space is another paging search space in the first PO.

6. The method according to claim 4, characterized in that If the second terminal device is a terminal device that does not support paging optimization, the first paging message is carried in the newly added paging search space and the second paging search space in the first PO, and the second paging search space is other paging search spaces in the first PO.

7. The method according to any one of claims 4 to 6, characterized in that The first paging search space is also used to transmit a second paging message for a third terminal device, and the second paging message and the first paging message are carried in different downlink control information DCI and / or different transmission blocks TB.

8. The method according to any one of claims 3 to 7, characterized in that The first paging search space is a paging search space corresponding to a portion of the synchronization signal blocks SSB that can be sent by the network device.

9. The method according to claim 8, characterized in that The partial SSB is determined based on the location of the first terminal device.

10. The method according to any one of claims 3 to 9, characterized in that If the first terminal device has digital multi-antenna reception capability, one of the first paging search spaces is used to transmit the first paging message on multiple beams.

11. The method according to claim 2, characterized in that The multiple POs include a second PO and a third PO, the second PO is determined based on the identification of the first terminal device, and the third PO is determined based on the second PO and the first parameter.

12. The method according to claim 11, characterized in that The first parameter is sent to the first terminal device via a system message.

13. The method according to claim 11 or 12, characterized in that The first paging search space includes part of the paging search space within the second PO and part of the paging search space within the third PO.

14. The method according to claim 13, characterized in that The SSB corresponding to the part of the paging search space in the second PO is different from the SSB corresponding to the part of the paging search space in the third PO.

15. The method according to any one of claims 11 to 14, characterized in that The third PO includes one or more POs.

16. The method according to any one of claims 1 to 15, characterized in that The method further comprises: The first terminal device sends first capability information to the network device, where the first capability information is used to indicate whether the first terminal device supports paging optimization.

17. The method according to claim 16, characterized in that The first capability information is carried in a radio resource control RRC message or a media access control element MAC CE.

18. The method according to claim 17, characterized in that The RRC message includes a user equipment UE capability reporting message and / or a UE assistance information reporting message.

19. The method according to claim 16, wherein If the RRC message is a UE capability reporting message, the first capability information is also used to store in the access and mobility management AMF.

20. The method according to any one of claims 1 to 19, characterized in that The method further comprises: The first terminal device obtains first information, where the first information is used to indicate whether the cell where the first terminal device resides implements paging optimization.

21. The method according to claim 20, characterized in that The first information is carried in system information or system information block SIB.

22. The method according to claim 20 or 21, characterized in that The first information indicates whether the cell where the first terminal device resides implements paging optimization in one or more of the following ways: The value of the first variable; Whether the second parameter exists.

23. The method according to any one of claims 20 to 22, characterized in that The method further comprises: The first terminal device determines the first paging search space based on the capability of the first terminal device and the first information.

24. A terminal device, characterized in that: include: The receiving unit is used to receive a first paging message sent by a network device, where the first paging message is carried in a first paging search space, and the first paging search space is determined based on the capability of the first terminal device and / or whether the cell where the first terminal device resides implements paging optimization.

25. The terminal device according to claim 24, characterized in that The first terminal device is a terminal device supporting paging optimization, the first paging search space is a newly added paging search space, or the first paging search space is a paging search space within multiple paging occasions PO.

26. The terminal device according to claim 25, characterized in that The first paging search space is a paging search space newly added in the first PO, and the first PO is determined based on the identifier of the first terminal device.

27. The terminal device according to claim 26, characterized in that The first paging message also includes a paging message for a second terminal device, where the second terminal device is a terminal device that supports paging optimization or a terminal device that does not support paging optimization.

28. The terminal device according to claim 27, characterized in that If the second terminal device is a terminal device that supports paging optimization, the first paging message is only carried in the paging search space newly added in the first PO, or The first paging message is carried in a paging search space newly added in the first PO and a second paging search space, where the second paging search space is another paging search space in the first PO.

29. The terminal device according to claim 27, characterized in that If the second terminal device is a terminal device that does not support paging optimization, the first paging message is carried in the newly added paging search space and the second paging search space in the first PO, and the second paging search space is other paging search spaces in the first PO.

30. The terminal device according to any one of claims 27 to 29, characterized in that: The first paging search space is also used to transmit a second paging message for a third terminal device, and the second paging message and the first paging message are carried in different downlink control information DCI and / or different transmission blocks TB.

31. The terminal device according to any one of claims 26 to 30, characterized in that: The first paging search space is a paging search space corresponding to a portion of the synchronization signal blocks SSB that can be sent by the network device.

32. The terminal device according to claim 31, characterized in that The partial SSB is determined based on the location of the first terminal device.

33. The terminal device according to any one of claims 26 to 32, characterized in that: If the first terminal device has digital multi-antenna reception capability, one of the first paging search spaces is used to transmit the first paging message on multiple beams.

34. The terminal device according to claim 25, characterized in that The multiple POs include a second PO and a third PO, the second PO is determined based on the identification of the first terminal device, and the third PO is determined based on the second PO and the first parameter.

35. The terminal device according to claim 34, characterized in that The first parameter is sent to the first terminal device via a system message.

36. The terminal device according to claim 34 or 35, characterized in that: The first paging search space includes part of the paging search space within the second PO and part of the paging search space within the third PO.

37. The terminal device according to claim 36, characterized in that The SSB corresponding to the part of the paging search space in the second PO is different from the SSB corresponding to the part of the paging search space in the third PO.

38. The terminal device according to any one of claims 34 to 37, characterized in that: The third PO includes one or more POs.

39. The terminal device according to any one of claims 24 to 38, characterized in that: The terminal device further includes: A sending unit is used to send first capability information to the network device, where the first capability information is used to indicate whether the first terminal device supports paging optimization.

40. The terminal device according to claim 39, characterized in that The first capability information is carried in a radio resource control RRC message or a media access control element MAC CE.

41. The terminal device according to claim 40, characterized in that The RRC message includes a user equipment UE capability reporting message and / or a UE assistance information reporting message.

42. The terminal device according to claim 39, characterized in that If the RRC message is a UE capability reporting message, the first capability information is also used to store in the access and mobility management AMF.

43. The terminal device according to any one of claims 24 to 42, characterized in that: The terminal device further includes: An acquisition unit is used to acquire first information, where the first information is used to indicate whether the cell where the first terminal device resides implements paging optimization.

44. The terminal device according to claim 43, characterized in that The first information is carried in system information or system information block SIB.

45. The terminal device according to claim 43 or 44, characterized in that: The first information indicates whether the cell where the first terminal device resides implements paging optimization in one or more of the following ways: The value of the first variable; Whether the second parameter exists.

46. ​​The terminal device according to any one of claims 43 to 45, characterized in that: The terminal device further includes: A determining unit is used to determine the first paging search space based on the capability of the first terminal device and the first information.

47. A terminal device, characterized in that: The terminal device comprises a transceiver, a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send a signal so that the terminal device executes the method as described in any one of claims 1 to 23.

48. A device, characterized in that The device comprises a processor configured to call a program from a memory so as to cause the device to execute the method according to any one of claims 1 to 23.

49. A chip, characterized in that The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 23.

50. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 23.

51. A computer program product, characterized in that The method comprises a program for causing a computer to execute the method according to any one of claims 1 to 23.

52. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 23.

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