Paging method and device

Abstract

A paging method and apparatus, comprising: before paging an inactive or idle terminal (hereinafter referred to as a terminal), an access network device sends an alarm signal to the terminal, the decoding or detection threshold of the alarm signal being lower than the decoding or detection threshold of second information, and the decoding or detection threshold of the alarm signal being lower than the decoding or detection threshold of the second information; the second information comprises but is not limited to information for paging, information for waking up the terminal or information for synchronization and the like. When the terminal receives the alarm signal, environment conversion can be carried out, for example, the terminal moves from the NLOS environment to the LOS environment, and the terminal can receive paging of the access network equipment in the LOS environment.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular, to a paging method and device. Background Art

[0002] In the case of satellite communications, the path loss is very large. For idle or inactive terminals, if they are in a non-line of sight (NLOS) environment, the terminals are blocked and may not receive the information used for paging, and the access network equipment may not be able to page the terminals. In the case of satellite communications, how to page idle or inactive terminals is a research direction. Summary of the invention

[0003] The embodiments of the present application provide a paging method and device to implement paging of a terminal in a satellite communication scenario.

[0004] In a first aspect, a paging method is provided, the execution subject of the method is a terminal, or a module (such as a chip or circuit) in the terminal, etc., including: receiving first information, the first information including configuration information of an alarm signal; switching from a connected state to an idle state or an inactive state according to the first information; receiving an alarm signal according to the configuration information of the alarm signal, the alarm signal being associated with a first paging opportunity PO, the decoding or detection threshold of the alarm signal being lower than the decoding or detection threshold of the second information, the second information being information for paging, information for waking up the terminal, or information for synchronization; according to the alarm signal, switching from an idle state or an inactive state to a connected state on the first PO, and monitoring information for paging. Optionally, the alarm signal is a synchronization signal.

[0005] Through the above design, when the terminal is in an NLOS environment, it may not receive the information or wake-up signal for paging due to the influence of obstruction. In the embodiment of the present application, before the access network device sends the information or wake-up signal for paging, it first sends NFS to the terminal. The decoding or detection threshold of NFS is lower than the decoding detectable threshold of the information or wake-up signal for paging. The terminal can receive NFS in the NLOS environment. When the terminal receives NFS, it moves from the NLOS environment to the LOS environment according to the reminder of NFS, so that the terminal can receive the information or wake-up signal for paging, ensuring the success of the terminal's paging.

[0006] In one design, the configuration information of the alarm signal includes a time offset of the alarm signal relative to the first PO.

[0007] In one design, the method further includes: receiving a downlink signal; determining the signal quality of the downlink signal; and when the signal quality of the downlink signal is less than or equal to a threshold, executing the step of receiving an alarm signal according to the configuration information of the alarm signal.

[0008] In one design, the synchronization signal is transmitted repeatedly multiple times and / or the power of the synchronization signal is greater than the power of the paging information.

[0009] In one design, according to the alarm signal, switching from an idle state or an inactive state to a connected state on a first PO and monitoring information for paging includes: descrambling the alarm signal according to a first sequence, the first sequence being associated with the terminal; when the descrambling is successful, switching from an idle state or an inactive state to a connected state on the first PO and monitoring information for paging. Alternatively, when the descrambling fails, the terminal continues to remain dormant.

[0010] In one design, it also includes: when an alarm signal is received, starting a first timer; when the first timer times out, monitoring information used for paging on a second PO, and the second PO belongs to the first PO.

[0011] Through the above design, the first timer is introduced. The running time of the first timer is the time reserved for the terminal to move from the NLOS environment to the LOS environment. During the running period of the first timer, the access network device no longer sends information for paging (such as DCI and paging messages for scheduling paging messages, etc.), thereby saving the power consumption of the access network device for sending information for paging. For the terminal, PO is no longer monitored, saving the power consumption of the terminal for monitoring PO.

[0012] In one design, it also includes: when an alarm signal is received, starting a first timer; during the operation of the first timer, when the signal quality of the received downlink signal is greater than a threshold, sending a notification message, the notification message is used to instruct the terminal to listen for information used for paging on a third PO; on the third PO, listening for information used for paging, the third PO belonging to the first PO.

[0013] Through the above design, since different terminals complete the environment conversion at different times, some terminals can complete the environment conversion in advance without waiting until the first timer ends. At this time, PO can be activated in advance to send information for paging, thereby reducing the waiting time of the paging terminal and completing the paging of the terminal in advance.

[0014] In one design, it also includes: when the first timer times out, starting the second timer; during the operation of the second timer, performing downlink synchronization with the access network device.

[0015] Through the above design, the time for the terminal to synchronize downlink with the access network device is reserved. After the terminal environment is converted, the terminal synchronizes downlink with the access network device within the reserved time. After downlink synchronization, the access network device sends information for paging on the corresponding PO. The terminal receives information for paging on the corresponding PO. Through downlink synchronization, the time and frequency positions of the terminal and the access network device are aligned, thereby improving the communication quality of subsequent information for paging.

[0016] In a second aspect, a paging method is provided, the execution subject of the method is an access network device, or a module (such as a chip or circuit, etc.) in the access network device, or a logical node, a logical module or software that fully or partially implements the functions of the access network device, including: sending a first message, the first message is used to indicate that the terminal switches from a connected state to an idle state or an inactive state, and the first message includes configuration information of an alarm signal; according to the configuration information of the alarm signal, sending an alarm signal, the alarm signal is associated with a first paging opportunity PO, the decoding or detection threshold of the alarm signal is lower than the decoding or detection threshold of the second information, and the second information is information for paging, information for waking up the terminal, or information for synchronization; according to the alarm signal, on the first PO, sending information for paging. Optionally, the alarm signal is a synchronization signal.

[0017] In one design, the configuration information of the alarm signal includes a time offset of the alarm signal relative to the first PO.

[0018] In one design, before sending the alarm signal, it also includes: sending a downlink signal.

[0019] In one design, the synchronization signal is transmitted repeatedly multiple times and / or the power of the synchronization signal is greater than the power of the paging information.

[0020] In one design, the alerting signal is scrambled with a first sequence, and the first sequence is associated with the terminal.

[0021] In one design, it also includes: when an alarm signal is sent, starting a first timer; when the first timer times out, sending information for paging on a second PO, and the second PO belongs to the first PO.

[0022] In one design, it also includes: when an alarm signal is sent, starting a first timer; during the operation of the first timer, receiving a notification message, the notification message is used to instruct the terminal to listen to information for paging on a third PO; on the third PO, sending information for paging, the third PO belongs to the first PO.

[0023] In one design, it also includes: when the first timer times out, starting the second timer; during the operation of the second timer, performing downlink synchronization with the terminal.

[0024] In a third aspect, a device is provided, which can implement the method of the first aspect. For example, the device includes means for executing the method of the first aspect. The device can be implemented by hardware, software, or by executing the corresponding software implementation by hardware.

[0025] In one design, the apparatus includes a unit that performs the above-mentioned first aspect.

[0026] In one design, the device includes a processor and a memory, and the processor is used to execute a computer program or instructions stored in the memory, so that the device implements the method of the first aspect above.

[0027] In one design, the device includes a processor and an interface circuit, the interface circuit is used to receive signals from other devices outside the device and transmit them to the processor or send signals from the processor to other devices outside the device, and the processor is used to implement the method in the first aspect above through logic circuits or executing code instructions.

[0028] In a fourth aspect, a device is provided, which can implement the method of the second aspect. For example, the device includes means for executing the method of the second aspect. The device can be implemented by hardware, software, or by executing the corresponding software implementation by hardware.

[0029] In one design, the apparatus includes a unit for performing the second aspect described above.

[0030] In one design, the device includes a processor and a memory, and the processor is used to execute a computer program or instructions stored in the memory, so that the device implements the method of the second aspect above.

[0031] In one design, the device includes a processor and an interface circuit, the interface circuit is used to receive signals from other devices outside the device and transmit them to the processor or send signals from the processor to other devices outside the device, and the processor is used to implement the method in the above second aspect through logic circuits or executing code instructions.

[0032] In a fifth aspect, a computer-readable storage medium is provided, storing a computer program or instruction. When the computer program or instruction is executed on a computer, the computer implements the method of the first aspect or the second aspect.

[0033] In a sixth aspect, a computer program product is provided, comprising a computer program or instructions, wherein when the computer program or instructions are executed by a computer, the method of the first aspect or the second aspect is executed.

[0034] In a seventh aspect, a chip is provided, comprising a processor, wherein the processor is coupled to a memory and is used to execute a computer program or instruction stored in the memory, so that the chip implements the method of the first aspect or the second aspect mentioned above.

[0035] In an eighth aspect, a communication system is provided, comprising: a first communication device and a second communication device; wherein the first communication device is used to implement the method of the first aspect, and the second communication device is used to implement the method of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of a process provided for an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the time offset between NSF and PO provided in an embodiment of the present application;

[0039] Figure 4 A schematic diagram of an enhanced PSS provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of masks for different groups of terminals provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of the structure of a device provided in an embodiment of the present application;

[0042] Figure 7 Another schematic diagram of the structure of the device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings. The specific operation methods, functional descriptions, etc. in the method embodiments can also be applied to the device embodiments or system embodiments.

[0044] Figure 1 A possible, non-limiting system schematic is shown. Figure 1 As shown, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200 .

[0045] The RAN 100 includes at least one RAN node (eg, Figure 1 110a and 110b in the embodiment, which may be collectively referred to as 110) and at least one terminal (e.g., Figure 1120a and 120b in the figure may be collectively referred to as 120). RAN100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment, etc. ( Figure 1 not shown).

[0046] The terminal 120 can be connected to the RAN node 110 in a wireless manner. The RAN node 110 is deployed on a satellite and is connected to the core network 200 in a wireless manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices, or can be the same physical device that integrates the logical functions of the core network device and the logical functions of the RAN node 110.

[0047] RAN100 may be a cellular system related to the 3rd generation partnership project (3GPP), for example, a 4th generation (4G) mobile communication system, a 5th generation (5G) mobile communication system, or a future-oriented evolution system, for example, a 6th generation (6G) mobile communication system. RAN100 may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or a wireless fidelity (wireless fidelity, WiFi) system. RAN 100 may also be a communication system that integrates two or more of the above systems.

[0048] The RAN node 110, which may also be sometimes referred to as an access network device, a RAN entity or an access node, etc., constitutes a part of the communication system to help the terminal achieve wireless access. In the subsequent description of this application, unless otherwise specified, the "access network device" is used for description. The multiple RAN nodes 110 in the communication system 10 can be nodes of the same type or nodes of different types. The RAN node 110 and the terminal 120 are sometimes referred to as communication devices, for example Figure 1 The network elements 110a and 110b may be understood as communication devices having a base station function, and the network elements 120a and 120b may be understood as communication devices having a terminal function.

[0049] In one possible scenario, the RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The RAN node may be a macro base station, a micro base station or an indoor station, a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node may also be a server, a wearable device, a vehicle or an on-board device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU). All or part of the functions of the RAN node in the embodiment of the present application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node in the embodiment of the present application may also be a logical node, a logical module, or software that can implement all or part of the functions of the RAN node.

[0050] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0051] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0052] The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality (VR), augmented reality (AR), industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal may be a mobile phone, a head-mounted display device, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the device form of the terminal.

[0053] The core network 200 includes at least one ground station (eg, Figure 1 The ground station 210 is responsible for forwarding control plane signaling and / or user plane service data between the RAN node 110 and the user plane function (UPF) 220. Further, the core network 200 also includes a control plane function entity and a user plane function entity. For example, the user plane function entity includes UPF220. The control plane function entity includes an access and mobility management function (AMF) 230 and a session management function (SMF) 240. Figure 1 In addition to the illustration, the core network 200 may also include other control plane functional entities, etc., without limitation.

[0054] Optionally, the communication system 10 further includes: a data network (DN) 300. In downlink data transmission on the user plane, the DN 300 may send downlink data to the terminal 120 through the UPF 220, the ground station 210, the RAN node 110, etc. In uplink data transmission on the user plane, the terminal 120 may send uplink data to the DN 300 through the RAN node 110, the ground station 210, the UPF 220, etc.

[0055] It can be understood that the interface between the terminal 120 and the RAN node 110 is an air interface. The interface between different RAN nodes 110 is an Xn interface, and different RAN nodes 110 exchange control plane signaling and / or user plane service data through the Xn interface. The interface between the RAN node 110 and the ground station 210 is an NG interface, which can be considered as an interface between the RAN 100 and the core network 200.

[0056] In the new radio (NR), the states of the terminal include connected state, idle state and inactive state. In the connected state, a radio resource control (RRC) connection is established between the terminal and the access network device, and data can be transmitted between the terminal and the access network device. The idle state refers to the state of the terminal when the terminal completes its residency in the cell but does not perform random access, the random access fails, or the RRC is released. Usually, the terminal enters the idle state after it is turned on or the RRC is released. The inactive state is a state between the connected state and the idle state. In the inactive state, the user plane of the air interface is suspended, and the user plane bearer and control plane bearer between RAN and CN are maintained. When the terminal initiates paging or a service request, the user plane bearer of the air interface is activated, and the existing user plane bearer and control plane bearer between RAN and CN are reused.

[0057] When the discontinuous reception (DRX) mechanism is configured, the idle or inactive terminals are dormant for most of the DRX cycle. The terminal wakes up on the paging occasion (PO) of the paging frame (PF) and monitors the physical downlink control channel (PDCCH). If the terminal successfully monitors the PDCCH on the PO, the terminal obtains the downlink control information (DCI) carried in the PDCCH. The DCI is scrambled using the paging-radio network temporary identifier (P-RNTI). According to the scheduling of the DCI, a paging message is received on the physical downlink shared channel (PDSCH). Furthermore, the paging record list of the paging message includes the identifier of at least one terminal paged by the access network device. The terminal determines whether its own ID is consistent with the ID of a terminal in the paging record table; if the two are consistent, it means that the access network device is paging itself, and it can perform random access or other operations according to the instructions of the paging message. If the two are inconsistent, the terminal discards the paging message and continues to sleep.

[0058] In the case of satellite communications, the path loss is very large. Especially in non-line of sight (NLOS) environments, due to the obstruction, the terminal and the access network equipment on the satellite can hardly communicate. For idle or inactive terminals, paging messages may not be received.

[0059] In view of this, in an embodiment of the present application, before sending information for paging to an inactive or idle terminal (hereinafter referred to as the terminal), the access network device sends an alarm signal to the terminal, and the decoding or detection threshold of the alarm signal is lower than the decoding or detection threshold of the information for paging. When the terminal receives the alarm signal, it can perform an environment conversion, for example, the terminal moves from an NLOS environment to a line of sight (LOS) environment, and can receive a paging message in the LOS environment.

[0060] Some nouns or terms used in the embodiments of the present application are explained below, and the explanations of the nouns or terms are also considered as part of the embodiments of the present application.

[0061] 1. PO

[0062] PO is a collection of PDCCH monitoring occasions, and the unit of PO can be a subframe, time slot or symbol, etc. The terminal can monitor the PDCCH used for paging (which can be referred to as paging PDCCH) on the PO. In one design, each DRX cycle includes one or more PFs. The DRX cycle can also be called a paging cycle, that is, one or more PFs can be included in a paging cycle. Each PF can include at least one PO. For example, a PF includes a radio frame, and a radio frame includes 10 subframes. The indexes of the 10 subframes are 0 to 9. Subframe 7 can be configured as PO, and the terminal monitors the paging PDCCH at the position of subframe 7. At this time, a PF includes a PO.

[0063] NLOS and LOS

[0064] The propagation conditions of wireless communication systems are usually divided into line-of-sight (LOS) environment and non-line-of-sight (NLOS) environment. In the LOS environment, the wireless signal is transmitted directly between the transmitter and the receiver without obstruction. In the NLOS environment, there is an obstruction between the transmitter and the receiver, which may cause the strength of the wireless signal to drop significantly. It can be understood that in the scenario of the paging terminal, the transmitter is the access network device and the receiver is the terminal.

[0065] like Figure 2 As shown, the embodiment of the present application provides a flow chart, including:

[0066] Step 210: The access network device sends the first information, and the terminal receives the first information.

[0067] In the embodiment of the present application, the first information is used to indicate that the terminal switches or releases from the connected state to the idle state or the inactive state. The first information may be an RRC release message, or a broadcast message, etc. When the terminal receives the first information, it executes step 220 to switch from the connected state to the idle state or the inactive state.

[0068] The first information includes configuration information of the notification signal (NFS). For example, the transmission resources of NFS and the parameters of the corresponding sequence of NFS. NFS is associated with one or more POs. In an embodiment of the present application, the PO associated with NFS may be referred to as the first PO, and the first PO may include one or more POs. In one design, the configuration information of NFS includes the time offset of NFS relative to the first PO, and may also include the number of repetitions of configuring NFS. When the first PO includes multiple POs, the configuration information of NFS specifically includes the time offset of NFS relative to the target PO, and the target PO is the PO with the most forward time domain position among the multiple POs. Figure 3As shown, the configuration information of NFS includes the time offset of NFS relative to the first PO, specifically: the time length that NFS is ahead of the first PO, which can be called NFS offset. Optionally, NFS is periodic, and the configuration information of NFS also includes the NFS period. In one implementation, the NFS period may refer to the minimum period of NFS. The terminal can monitor NFS according to the period of NFS. Alternatively, the terminal can monitor part of the NFS in the NFS period according to the corresponding PO position in the paging cycle. For example, the minimum period of NFS is 5ms, and the access network device sends NFS every 5ms. The paging cycle is 10ms, and each paging cycle includes 1 PO. The terminal listens to the information used for paging at the corresponding PO position every 10ms according to the paging cycle. It can be seen that there are 2 NFSs within 10ms of each paging cycle. The terminal can select a NFS that is before the PO position in the time domain and has a time offset equal to PO based on the position of PO in the paging cycle. Figure 3 The NFS that listens to the NFS offset in the configuration file will no longer listen to the remaining NFS.

[0069] Step 220: The terminal switches from the connected state to the idle state or the inactive state according to the first information.

[0070] Step 230: The access network device sends the NFS according to the NFS configuration information, and the terminal receives the NFS according to the NFS configuration information.

[0071] In one design, a decoding or detection threshold of the NFS is lower than a decoding or detection threshold of the second information, where the second information is information for paging, information for waking up the terminal, or information for synchronization.

[0072] In one implementation, the information used for paging may include: paging PDCCH and / or paging message, etc. The paging PDCCH includes DCI scrambled by P-RNTI, and the DCI is used to schedule the paging message in the PDSCH. That is to say, in an embodiment of the present application, the decoding or detection threshold of NFS is lower than the decoding or detection threshold of the information used for paging. In one design, when the terminal is in an NLOS environment, it is affected by obstruction and the terminal cannot receive the information used for paging, resulting in the failure of the terminal's paging. In an embodiment of the present application, since the decoding or detection threshold of NFS is lower than the decoding or detection threshold of the information used for paging, the terminal can receive NFS in an NLOS environment. When receiving NFS, the terminal can remind the user to move from the NLOS environment to the LOS environment. In the LOS environment, there is no obstruction, and the terminal can receive the information used for paging, ensuring the success of the terminal's paging.

[0073] In another implementation, the information used to wake up the terminal may include: a wake-up signal (WUS). When the terminal configures the DRX cycle, the terminal is dormant most of the time. Before the terminal monitors the PDCCH on the PO, the access network device may send a WUS to the terminal, and the WUS is used to wake up the terminal. The awakened terminal monitors the paging PDCCH on the PO. In an embodiment of the present application, the decoding or detection threshold of NFS is lower than the decoding or detection threshold of WUS. In one design, when the terminal is in an NLOS environment, it is blocked and the terminal cannot receive the WUS, which further causes the terminal to be unable to receive information for paging and the paging of the terminal fails. In an embodiment of the present application, since the decoding or detection threshold of NFS is lower than the decoding or detection threshold of WUS, the terminal can receive NFS in the NLOS environment, and further according to the reminder of NFS, the user can move from the NLOS environment to the LOS environment. In the LOS environment, the terminal can receive WUS or information for paging to ensure the success of the terminal's paging.

[0074] In another implementation, the decoding or detection threshold of NFS is lower than the decoding or detection threshold of information used for synchronization. For example, the information used for synchronization may be a synchronization signal / physical broadcast channel block (synchronization signal / PBCHblock, SSB), and the synchronization signal may be a primary synchronization signal (primary synchronization signal, PSS) or a secondary synchronization signal (secondary synchronization signal, SSS). That is, SSB may include PSS, SSS, and physical broadcast channel (physical broadcast channel, PBCH), etc. The decoding or detection threshold of NFS may be lower than the decoding or detection threshold of SSB, for example, the decoding or detection threshold of NFS is lower than the decoding or detection threshold of at least one of PSS, SSS, or PBCH. For example, in one implementation, NFS is an enhanced synchronization signal, the enhanced synchronization signal may be an enhanced PSS, the decoding or detection threshold of the enhanced PSS is lower than the decoding or detection threshold of the traditional PSS, or the enhanced synchronization signal may be an enhanced SSS, the decoding or detection threshold of the enhanced SSS is lower than the decoding or detection threshold of the traditional SSS.

[0075] Step 240: The terminal switches from an idle state or an inactive state to a connected state on the first PO according to the NFS, and monitors the information for paging.

[0076] In one design, when a terminal receives an NFS, the terminal may remind the user, and the reminder includes at least one of the following: voice, video or vibration, etc. Based on the reminder, the user may move the terminal from an NLOS environment to an LOS environment. For example, when the terminal is placed inside a pocket of clothing, a bag, etc., the terminal is in an NLOS environment due to the obstruction of the pocket of clothing or the bag, etc. In this scenario, the access network device sends an NFS to the terminal in the NLOS environment. Since the decoding or detection threshold of the NFS is lower than the decoding or detection threshold of the information used for paging, the terminal can receive the NFS in the NLOS environment. Based on the reminder of the NFS, the user moves the terminal out of the pocket of clothing or the bag, etc., exposing the terminal to the external environment. At this time, the terminal is in an LOS environment, and the terminal can receive information for paging.

[0077] In step 240, the information for paging monitored by the terminal at the first PO may refer to the paging PDCCH. When the terminal monitors the paging PDCCH at the first PO, the terminal receives the paging message in the PDSCH according to the scheduling of the DCI carried in the paging PDCCH. The terminal matches the terminal identifier with the paging record table in the paging message. If the terminal identifier is the same as the identifier of a terminal included in the paging record table, the terminal performs random access or other operations according to the instructions of the paging message. Otherwise, the terminal discards the paging message and continues to sleep.

[0078] In one design, the NFS may be a synchronization signal. Further, the synchronization signal may be an enhanced synchronization signal. For example, the synchronization signal is repeatedly transmitted multiple times, and / or the power of the synchronization signal is greater than the power of the information used for paging. The synchronization signal includes a PSS and / or an SSS. For example, in one implementation, the NFS may adopt at least one of the following designs:

[0079] 1. Enhanced PSS: Enhanced PSS is transmitted repeatedly compared to traditional PSS. Figure 4 As shown, the traditional PSS is transmitted once, and the enhanced PSS can be transmitted four times, or twice, etc. The PSS that is transmitted four times is the first type of enhanced PSS, and the PSS that is transmitted twice is the second type of enhanced PSS. The time-frequency resources of the PSS that is transmitted four times are adjacent, and the time-frequency resources of the PSS that is transmitted twice are separated by the time-frequency resources of one PSS. The link budget performance of the enhanced PSS is better than that of the traditional PSS. The link budget is the calculation of the gain and attenuation of the transmitter, communication link, propagation environment, and receiver in a communication system. The better the link budget performance, the higher the probability that the terminal will successfully receive the signal or information in the NLOS environment.

[0080] 2. Enhanced SSS: Enhanced SSS performs multiple repeated transmissions compared to traditional SSS. There is no restriction on the repeated transmission method of SSS. For example, the repeated transmission method of SSS can refer to the repeated transmission method of PSS. The link budget performance of enhanced SSS is better than that of traditional SSS.

[0081] 3. Hybrid PSS and SSS: The access network device can configure both enhanced PSS and enhanced SSS for the terminal. Alternatively, the NFS configured by the access network device for the terminal can include both enhanced PSS and enhanced SSS.

[0082] Through the above design, when the terminal is in an NLOS environment, it may not receive the information or wake-up signal for paging due to the influence of obstruction. In the embodiment of the present application, before the access network device sends the information or wake-up signal for paging, it first sends NFS to the terminal. The decoding or detection threshold of NFS is lower than the decoding detectable threshold of the information or wake-up signal for paging. The terminal can receive NFS in the NLOS environment. When the terminal receives NFS, it moves from the NLOS environment to the LOS environment according to the reminder of NFS, so that the terminal can receive the information or wake-up signal for paging, ensuring the success of the terminal's paging.

[0083] In one design, in step 230, before the access network device sends the NFS, it also includes: the access network device sends a downlink signal. Before the terminal receives the NFS, it also includes: the terminal receives the downlink signal; the terminal determines the signal quality of the downlink signal. When the signal quality of the downlink signal is less than or equal to (or less than) the threshold, it means that the communication environment of the terminal is poor and is likely to be in an NLOS environment. At this time, the terminal can execute the step of receiving NFS according to the configuration information of NFS. Alternatively, when the signal quality of the downlink signal is greater than (or greater than or equal to) the threshold, it means that the communication environment of the terminal is good, and the terminal can monitor the paging PDCCH on PO according to the original configuration. It can be understood that in addition to this, there may also be a situation where the terminal cannot receive the downlink signal. At this time, it is also considered that the terminal is likely to be in an NLOS environment, and the step of receiving NFS according to the configuration information of NFS is executed.

[0084] In one implementation, the terminal may receive a downlink signal through the current serving cell or the neighboring cell. The terminal in the foregoing that cannot receive a downlink signal may mean that the terminal cannot receive a downlink signal through the current cell and / or the neighboring cell. In one design, the threshold set for the current serving cell and the neighboring cell is the same. The signal quality of the downlink signal in the foregoing is less than or equal to (or less than) the threshold, including at least one of the following: the signal quality of the downlink signal of the current serving cell is less than or equal to (or less than) the threshold; or the signal quality of the downlink signal of the neighboring cell is less than or equal to (or less than) the threshold. Similarly, the signal quality of the downlink signal in the foregoing is greater than (or greater than or equal to) the threshold, including at least one of the following: the signal quality of the downlink signal of the current serving cell is greater than (or greater than or equal to) the threshold, or the signal quality of the downlink signal of the neighboring cell is greater than (or greater than or equal to) the threshold. In another design, the thresholds set for the current serving cell and the neighboring cell are different. For example, the threshold of the current serving cell is the first threshold, the threshold of the neighboring cell is the second threshold, and the first threshold is different from the second threshold. The signal quality of the downlink signal in the foregoing text is less than or equal to (or less than) the threshold, including at least one of the following: the signal quality of the downlink signal of the current serving cell is less than or equal to (or less than) the first threshold, or the signal quality of the downlink signal of the neighboring cell is less than or equal to (or less than) the second threshold. Similarly, the signal quality of the downlink signal in the foregoing text is greater than (or greater than or equal to) the threshold, including at least one of the following: the signal quality of the downlink signal of the current serving cell is greater than (or greater than or equal to) the first threshold, or the signal quality of the downlink signal of the neighboring cell is greater than (or greater than or equal to) the second threshold.

[0085] In one design, a method in which an access network device configures NFS for a terminal includes the following examples:

[0086] Example 1: The terminal reports to the access network device whether it supports NFS receiving capability. The access network device determines whether to configure NFS for the terminal based on the terminal's capability. Figure 2 Before step 210, the method further includes: the terminal reports its capability to the access network device, and the capability includes whether the terminal supports the reception of NFS. When the terminal supports the reception of NFS, the access network device configures NFS for the terminal, for example, the configuration information of NFS is carried in the first information of step 210. Or when the terminal does not support the reception of NFS, the access network device no longer configures NFS for the terminal, for example, the configuration information of NFS is no longer carried in the first information of step 210. The terminal monitors the paging PDCCH on the PO in the original manner. Or,

[0087] Example 2: The terminal may request the access network device to configure NFS. When receiving the request from the terminal, the access network device configures NFS for the terminal, for example, by carrying the configuration information of NFS in the first information in step 210. For example, the terminal may measure the downlink signal. If the terminal is in an idle or inactive state and cannot receive a downlink signal in the serving cell and / or the neighboring cell, or the signal quality of the downlink signal received by the serving cell and / or the neighboring cell is less than or equal to (or less than) the threshold, the terminal may request the access network device to configure NFS. Or,

[0088] Example 3: When the terminal is under good signal conditions, it reports its idle or inactive measurement report. The access network device determines whether to configure NFS for the terminal based on its measurement report. For example, the access network device determines the signal quality of the downlink signal received by the terminal based on the measurement report reported by the terminal; when the signal quality of the downlink signal is less than or equal to (or less than) the threshold, it is considered that the terminal is in an NLOS environment and NFS is configured for the terminal; when the signal quality of the downlink signal is greater than (or greater than or equal to) the threshold, it is considered that the terminal is in a LOS environment and NFS is no longer configured for the terminal.

[0089] Through the above design, in the communication scenario of satellite communication, the NFS configuration is introduced, allowing the terminal to move to a condition with good signal quality for communication according to the received NFS when in an NLOS environment with obstruction.

[0090] In one design, the access network device configures different NFS resources for different terminals. Before paging a terminal, the access network device may send an NFS on the NFS resources configured for the terminal. The terminal receives the NFS on the configured NFS resources. Alternatively, the access network device configures the same NFS resources for a group of terminals, and the group of terminals includes at least one terminal. When paging a terminal, the access network device may scramble the NFS using a first sequence associated with the terminal and send the scrambled NFS on the NFS resources. Each terminal in a group of terminals receives the NFS on the configured NFS resources. Each terminal descrambles the scrambled NFS using a sequence associated with itself; if the descrambling is successful, it indicates that the NFS is sent to the terminal itself, and it listens to information for paging on the first PO; or, if the descrambling fails, it continues to remain dormant and no longer listens to information for paging on the first PO.

[0091] In one design, the NFS is scrambled using a first sequence. In step 240, the terminal switches from an idle state or an inactive state to a connected state on a first PO according to the NFS, and monitors information for paging, including: the terminal descrambles the NFS according to the first sequence, and the first sequence is associated with the terminal; when the descrambling is successful, the terminal switches from an idle state or an inactive state to a connected state on the first PO, and monitors information for paging. Alternatively, when the descrambling fails, the terminal continues to remain dormant.

[0092] In one implementation, the first sequence is associated with the terminal, including the following examples:

[0093] 1. The first sequence is a cover code sequence. The mask sequence is preset, specified by the protocol, or configured by the access network device to the terminal. In one implementation, the first information in step 210 includes, in addition to the configuration information of the NFS, a mask sequence configured by the access network device for the terminal. The mask sequences corresponding to different terminals may be different. For example, the mask sequence may consist of at least two of 0, 1, and -1. When the access network device sends an NFS to a terminal, it may scramble the NFS using the mask sequence corresponding to the terminal; when the terminal receives the NFS, it descrambles the NFS using its own mask sequence; if the descrambling is successful, it monitors the information used for paging on the first PO; otherwise, it continues to remain dormant.

[0094] 2. The first sequence is the terminal identification (identity document, ID). Different terminals have different identifications. In one implementation, the core network triggered paging can be configured by the core network device to identify the terminal. The access network device can be configured by the access network device to identify the terminal. Alternatively, if the terminal is not configured with an identification, the terminal can use a public identification. The public identification can be preset, protocol rule, or configured to the terminal by other devices, etc. Before sending a paging message to a terminal, the access network device can use the terminal's identification to scramble the NFS and send the scrambled NFS to the terminal; the terminal uses its own identification to descramble the received NFS. If the descrambling is successful, it means that the subsequent access network device will page itself, then on the first PO, listen to the information used for paging; otherwise, continue to remain dormant.

[0095] 3. The first sequence is determined according to the terminal identifier. For example, there is a correspondence between the first sequence and part or all of the terminal identifier. The access network device can take all or part of the terminal identifier, and determine the sequence corresponding to all or part of the terminal identifier according to the correspondence between the terminal identifier and the sequence, which is the first sequence, and use the first sequence to scramble the NFS and send the scrambled NFS to the terminal. The terminal can take all or part of its own identifier, and determine the sequence corresponding to all or part of its own identifier according to the correspondence between the terminal identifier and the sequence, which is the first sequence. The received NFS is descrambled using the first sequence. For example, in the terminal identifier, 4 bits are obtained. For example, the 4 bits can be 4 bits at the start position, 4 bits at the end position, or 4 bits at the middle position of the terminal identifier. The 4 bits are mapped to the first sequence. For example, bit 0 of the 4 bits is mapped to element -1, bit 1 is mapped to element 1, and the mapped first sequence includes 4 elements. Using 4 elements, NFS (for example, an enhanced synchronization signal that is repeatedly transmitted 4 times) is scrambled. For example, four elements are used to scramble each repeated transmission of the synchronization signal. For example, the four elements are used to scramble the synchronization signal when the synchronization signal is transmitted for the first to fourth times. Alternatively, each of the four elements is used to scramble the synchronization signal for four repeated transmissions. For example, the synchronization signal for the first to fourth repeated transmissions is scrambled using element 1 to element 4, respectively. The correspondence between the terminal identifier and the sequence may be predetermined, specified by the protocol, or configured by the access network device to the terminal, etc., without limitation.

[0096] In one design, the access network device may page multiple terminals at one time, for example, a paging message includes multiple terminal identifiers. In one implementation, the terminals may be grouped, and the first sequence corresponding to each terminal in a group of terminals is the same. The access network device may scramble the NFS using the first sequence corresponding to a group of terminals, so that a group of terminals moves to a LOS environment and receives information for paging. The access network device does not need to send NFS to each terminal separately, thereby simplifying the implementation of the access network device.

[0097] For example, if Figure 5As shown, the first sequence is a mask sequence. Terminal 1 and terminal 2 are a group of terminals, and the access network device pages terminal 1 and terminal 2 at the same time, that is, a paging message sent by the access network device includes the terminal 1 identifier and the terminal 2 identifier. The access network device configures the same mask sequence for terminal 1 and terminal 2, and the mask sequence is [1, -1, 1, -1]. When the access network device needs to page terminal 1 and terminal 2, the access network device can use the mask sequence [1, -1, 1, -1] to scramble NFS. The access network device configures the same NFS resources for terminal 1 and terminal 2. The access network device sends NFS on the corresponding resources. Terminal 1 and terminal 2 receive NFS on the configured NFS resources, respectively, and descramble NFS using the configured mask sequence. If terminal 1 and terminal 2 successfully descramble using the configured mask sequence, terminal 1 and terminal 2 can move to the LOS environment and continue to receive information for paging. The access network device enables the terminal 1 and the terminal 2 to move to the LOS environment at the same time through an NFS to receive the paging information.

[0098] Similarly, terminal 3 and terminal 4 can be a group of terminals, and the access network device configures the same mask sequence for terminal 3 and terminal 4, which is [-1, -1, -1, -1]. Terminal 5 and terminal 6 are a group of terminals, and the access network device configures the same mask sequence for terminal 5 and terminal 6, which is [1, 1, 1, 1]. Terminal 7 and terminal 8 are a group of terminals, and the access network device configures the same mask sequence for terminal 7 and terminal 8, which is [-1, 1, -1, 1].

[0099] In one design, NFS can be associated with N POs, that is, the first PO includes N POs, and N is an integer greater than or equal to 1. The value of N can be specified by the protocol, preset, or configured by the access network device to the terminal. In one implementation, the POs of different terminals may be different. For example, in a PF, the PO configured for terminal 1 is subframe 1, the PO configured for terminal 2 is subframe 5, and the PO configured for terminal 3 is subframe 7. If one NFS is associated with one PO, the access network device sends three NFSs, and the three NFSs are respectively associated with the PO of terminal 1, the PO of terminal 2, and the PO of terminal 3, respectively reminding terminal 1, terminal 2, and terminal 3 to move to the LOS environment, and listen to the PDCCH for paging on the corresponding PO. In an embodiment of the present application, one NFS is associated with multiple POs, for example, one NFS is associated with the POs of three terminals, that is, the first PO includes the POs of three terminals. Then the access network device reminds the three terminals to move to the LOS environment through one NFS, and listen to the information for paging on the corresponding PO, thereby reducing the resource overhead of the NFS.

[0100] In one design, in step 230, when the terminal receives an NFS, it also includes: the terminal starts a first timer (timer); during the operation of the first timer, the terminal does not listen for information for paging on the PO associated with the NFS. After the first timer times out or ends, the terminal listens for information for paging on a second PO, the second PO belongs to the first PO, and the second PO includes one or more POs. Correspondingly, in step 230, when the access network device sends an NFS, it also includes: the access network device starts a first timer. During the operation of the first timer, the access network device does not send information for paging on the PO associated with the NFS. After the first timer times out or ends, the access network device sends information for paging on the second PO.

[0101] For example, NFS associates 3 POs, that is, the first PO includes 3 POs. In one design, the terminal needs to monitor the information for paging on the 3 POs respectively. In the embodiment of the present application, if PO1 and PO2 of the 3 POs are located during the operation of the first timer, and PO3 is located after the operation of the first timer times out, the terminal only needs to monitor the information for paging on PO3, thereby saving the power consumption of the terminal monitoring the PO.

[0102] In one implementation, when receiving NFS, the terminal needs to move from the NLOS environment to the LOS environment. In the LOS environment, the terminal listens for information for paging on the PO. A first timer is introduced, and the first timer can be called timer 1. The running time of the first timer can be considered as: the time reserved for the terminal to move from the NLOS environment to the LOS. Therefore, during the operation of the first timer, the access network device may not send information for paging to the terminal, and the terminal does not listen for information for paging at the corresponding PO position according to the paging cycle.

[0103] In an embodiment of the present application, the first timer is a time reserved for the terminal to move from the NLOS environment to the LOS environment. Due to the movement or position change of the terminal, the time is usually in seconds. Therefore, the unit of the first timer can be seconds. In one design, since the running time of the first timer is long, multiple paging cycles of the terminal may be included. During the running period of the first timer, the paging cycle fails, and the terminal no longer listens to the information used for paging on the PO included in the paging cycle.

[0104] The first timer may be preset, specified by the protocol, or configured by the access network device to the terminal. For example, the first information in step 220 includes, in addition to the configuration information of the NFS, also the parameters of the first timer configured by the access network device for the terminal. In one implementation, the terminal determines a recommended value for the first timer size based on its own moving speed or the result of radio resource management (RRM) measurement. Before the terminal enters an idle state or an inactive state, the recommended value for the first timer size is reported to the access network device. The access network device may configure a more reasonable first timer size for the terminal based on the suggestion of the terminal.

[0105] Through the above design, the first timer is introduced. The running time of the first timer is the time reserved for the terminal to move from the NLOS environment to the LOS environment. During the running period of the first timer, the access network device no longer sends information for paging (such as DCI and paging messages for scheduling paging messages, etc.), thereby saving the power consumption of the access network device for sending information for paging. For the terminal, PO is no longer monitored, saving the power consumption of the terminal for monitoring PO.

[0106] In another design, during the operation of the first timer, if the terminal completes the environment conversion in advance, the terminal may send a notification message to the access network device, and the notification message is used to instruct the terminal to monitor the information for paging on the third PO. It is not necessary to wait until the operation of the first timer ends, and the access network device may activate the third PO in advance and send the information for paging on the activated third PO. When the terminal monitors the information for paging on the third PO, the third PO belongs to the first PO, and the third PO includes one or more POs.

[0107] In one implementation, the terminal completes the environment conversion in advance in a manner including: during the operation of the first timer, the signal quality of the downlink signal received by the terminal is greater than (or greater than or equal to) a threshold. At this time, the terminal may send a notification message to the access network device to notify the access network device that the environment conversion has been completed in advance and that PO can be monitored normally. The uplink resource for the terminal to send the notification message may be preset, specified by the protocol, or configured by the access network device to the terminal. The uplink resource may be periodic or non-periodic. For example, the uplink resource may be similar to the transmission resource configured for small data transmission (SDT) in an inactive state, or a statically configured resource.

[0108] That is, the access network device may start the first timer when sending NFS. The terminal starts the first timer when receiving NFS. During the operation of the first timer, when the signal quality of the downlink signal received by the terminal is greater than the threshold, it is considered that the terminal has completed the environment transition, and the terminal sends a notification message. During the operation of the first timer, the access network device receives the notification message and sends information for paging on the third PO. The terminal receives information for paging on the third PO. It can be understood that the above-mentioned information for paging includes at least a paging message. For terminals that do not feedback notification messages, the access network device may no longer include the above-mentioned terminal information in the paging message, for example, no longer including the identifier of the terminal that does not feedback, etc.

[0109] Through the above design, since different terminals complete the environment conversion at different times, some terminals can complete the environment conversion in advance without waiting until the first timer ends. At this time, PO can be activated in advance to send information for paging, thereby reducing the waiting time of the paging terminal and completing the paging of the terminal in advance.

[0110] In one design, when the terminal receives the NFS, the terminal synchronizes downlink with the access network device, and the downlink synchronization may be referred to as downlink time-frequency synchronization. After the downlink synchronization, the access network device sends information for paging on the fourth PO. After the downlink synchronization, the terminal receives information for paging on the fourth PO. The fourth PO belongs to the first PO, and the fourth PO includes one or more POs. The scheme for downlink synchronization between the access network device and the terminal includes:

[0111] The first solution: set a second timer, which is a reserved time for downlink synchronization between the terminal and the access network device. During the operation of the second timer, the terminal and the access network device perform downlink synchronization. The second timer may be called timer 2.

[0112] For example, when the first timer times out, the terminal starts the second timer. During the operation of the second timer, the terminal performs downlink synchronization with the access network device. Correspondingly, when the first timer times out, the access network device starts the second timer. During the operation of the second timer, the access network device performs downlink synchronization with the terminal. During the downlink synchronization between the terminal and the access network device: the access network device sends a synchronization signal, and the terminal receives the synchronization signal, such as PSS, SSS, or other synchronization signals. The terminal synchronizes time and frequency with the access network device according to the synchronization signal.

[0113] The second solution: during the operation of the first timer, the terminal is synchronized with the access network device in downlink.

[0114] For example, the running time of the first timer can be configured to be longer. During the running of the first timer, the terminal can first perform environment conversion and then synchronize downlink with the access network device. In the second solution, the fourth PO has the same concept as the aforementioned second PO, and the fourth PO can be replaced by the aforementioned second PO.

[0115] The third solution: There is a time offset between the end time of the first timer and the fourth PO. Within the time offset, the terminal and the access network device are synchronized downlink. In the third solution, the fourth PO has the same concept as the aforementioned second PO, and the fourth PO can be replaced by the aforementioned second PO.

[0116] Through the above design, the time for downlink synchronization between the terminal and the access network device is reserved. After the environment of the terminal is converted, the terminal and the access network device are downlink synchronized within the reserved time. After downlink synchronization, the access network device sends information for paging on the fourth PO. The terminal receives information for paging on the fourth PO. Through downlink synchronization, the time and frequency positions of the terminal and the access network device are aligned, thereby improving the communication quality of subsequent information for paging.

[0117] It is understandable that in the embodiments of the present application:

[0118] 1. In the description of this application, "information" and "message" can be replaced with each other. For example, the first information can be replaced with the first message, the second information can be replaced with the second message, and so on.

[0119] 2. In Figure 2 In the process, the order of different steps is not limited, and in each process, it may include fewer steps or more steps than the flow chart or text description.

[0120] 3. In Figure 2 In the process, the terminal and access network device are used as the execution subjects. It can be understood that in each process, the function of the terminal can be implemented by the terminal, or by a module in the terminal (such as a chip or circuit, etc.). The function of the access network device can be implemented by the access network device, or by a module in the access network device (such as a chip or circuit, etc.), or by a logical node, logical module or software that can fully or partially implement the function of the access network device.

[0121] 4. In the embodiments of the present application, "(such as a terminal) receives information from (such as an access network device)" can be understood as the source of the information is the access network device, and the destination is the terminal, which may include the terminal directly or indirectly receiving information from the access network device. The information may be processed as necessary between the source and destination of the information, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated here.

[0122] In the embodiments provided by the present application, the methods provided by the embodiments of the present application are introduced from the perspective of the interaction between the access network device and the terminal. In order to implement the functions in the methods provided by the embodiments of the present application, the access network device or the terminal may include a hardware structure and / or a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a function of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the design constraints of the specific application of the technical solution.

[0123] Figure 6 and Figure 7 The following is a schematic diagram of the structure of possible devices provided in the embodiments of the present application. These communication devices can implement the functions of the access network device or terminal in the above method embodiments. Therefore, the beneficial effects possessed by the above method embodiments may be achieved.

[0124] like Figure 6 As shown, the communication device 600 includes a processing unit 610 and an interface unit 620 .

[0125] Exemplarily, the processing unit 610 may also be referred to as a processor, a processing board, a processing module, a processing device, etc. The interface unit 620 may also be referred to as a transceiver, a transceiver, a transceiver module, a transceiver device, a communication unit, etc. Further, the interface unit 620 may include at least one of a sending unit or a receiving unit. The sending unit and the receiving unit may be integrated together, or may be two independent units, etc.

[0126] In one design, communication device 600 is used to implement Figure 2 Functions of the middle terminal or access network equipment:

[0127] For example, when the communication device 600 is used to implement Figure 2When the function of the terminal is in the middle: the interface unit 620 is used to receive the first information, and the first information includes the configuration information of the alarm signal. The processing unit 610 is used to switch from the connected state to the idle state or the inactive state according to the first information; the interface unit 620 is also used to receive the alarm signal according to the configuration information of the alarm signal, the alarm signal is associated with the first paging opportunity PO, the decoding or detection threshold of the alarm signal is lower than the decoding or detection threshold of the second information, and the second information is information for paging, information for waking up the terminal, or information for synchronization; the processing unit 610 is also used to switch from the idle state or the inactive state to the connected state on the first PO according to the alarm signal, and monitor the information for paging.

[0128] When the communication device 600 is used to implement Figure 2 The functions of the access network device in the middle are: a processing unit 610, which is used to generate configuration information of an alarm signal; an interface unit 620, which is used to send a first information, the first information is used to indicate that the terminal switches from a connected state to an idle state or an inactive state, and the first information includes the configuration information of the alarm signal; the interface unit 620 is also used to send an alarm signal according to the configuration information of the alarm signal, the alarm signal is associated with a first paging opportunity PO, the decoding or detection threshold of the alarm signal is lower than the decoding or detection threshold of the second information, and the second information is information for paging, information for waking up the terminal, or information for synchronization; the interface unit 620 is also used to send information for paging on the first PO according to the alarm signal.

[0129] For a more detailed description of the processing unit 610 and the interface unit 620, reference may be made to the description in the above method embodiment, which will not be repeated here.

[0130] It is understandable that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in the embodiments of the present application may be integrated into a physical device (for example, a processor), or each functional unit may be a separate physical device, or two or more units may be integrated into one unit for implementation, and the above-mentioned integrated unit may be implemented in the form of hardware, or in the form of software functional modules, etc.

[0131] Figure 7 Another structural diagram of a communication device 700 provided in an embodiment of the present application is shown. For example, Figure 7 The communication device 700 shown may be Figure 6 A hardware circuit implementation of the communication device 600 shown in FIG. Figure 7 Only the essential parts of the communication device are shown.

[0132] like Figure 7As shown, the communication device 700 includes a processor 710 and an interface circuit 720. The processor 710 and the interface circuit 720 are coupled to each other.

[0133] For example, the processor 710 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor. The interface circuit 720 may be a transceiver or an input-output circuit, etc.

[0134] Optionally, the communication device 700 may further include a memory 730 for storing instructions executed by the processor 710 or storing input data required by the processor 710 to execute instructions or storing data generated after the processor 710 executes instructions. For example, instructions may also be referred to as computer programs, or computer program codes, etc.

[0135] For example, the memory 730 may be a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known in the art.

[0136] When the communication device 700 is used to implement Figure 2 When the method is used for a terminal or access network device in the middle, the processor 710 is used to implement the function of the processing unit 610, and the interface circuit 720 is used to implement the function of the interface unit 620.

[0137] In one design, the interface circuit 720 is used to receive signals from other communication devices other than the communication device 700 and transmit them to the processor 710, or send signals from the processor 710 to other communication devices other than the communication device. The processor 710 implements the above through logic circuits or executes code instructions. Figure 2 The function of the terminal or access network equipment.

[0138] The embodiment of the present application also provides a communication device, which includes a processor and a memory, the processor and the memory are coupled, and the processor is used to implement Figure 2 For example, the processor may execute instructions in the memory so that the communication device implements one or more functions in the above method embodiments, such as Figure 2 In one exemplary embodiment, the storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in Figure 2 The processor and storage medium may also exist as discrete components. Figure 2 The terminal or access network equipment in the system.

[0139] The present application also provides a communication device, which includes a processor, and the processor is used to implement Figure 2 The function of the terminal or access network equipment.

[0140] The present application also provides a computer-readable storage medium, which stores instructions, which may also be referred to as computer programs, computer program codes, etc. The instructions are executed on a computer, so that the computer executes the method in the above embodiment. Figure 2 The function of the terminal or access network equipment.

[0141] Optionally, the computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may 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 program or instruction may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disc; it may also be a semiconductor medium, such as a solid-state hard disk. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both volatile and non-volatile types of storage media.

[0142] The present application also provides a computer program product, including a computer program or an instruction. When the computer program or the instruction is executed on a computer, the above Figure 2 The method of the terminal or access network device is executed. For example, the computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, all or part of the embodiments of the present application are executed. Figure 2 The process or function of a terminal or access network device.

[0143] It is understood that the method in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, it can be implemented in whole or in part in the form of a computer program product.

[0144] The present application also provides a chip, which includes a processor, the processor is coupled to a memory, and the processor is used to execute a computer program or instruction stored in the memory, so that the chip implements Figure 2 For example, taking the chip realizing the function of the access network device as an example, the chip can receive information from other modules of the access network device (such as radio frequency or antenna, etc.), and the information can be sent by the terminal to the access network device. Alternatively, the chip can send information to other modules in the access network device (such as radio frequency or antenna, etc.), and the information can be sent by the access network device to the terminal, etc.

[0145] The present application also provides a communication system, including: a first communication device and a second communication device. The first communication device can implement the above Figure 2 The second communication device can realize the function of the terminal in the above text. Figure 2 The functions of the access network equipment.

[0146] In the description of this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship; "including at least one of A, B or C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0147] The various numbers and words such as "first" and "second" involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number 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.

[0148] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A paging method, characterized in that: include: receiving first information, wherein the first information includes configuration information of an alarm signal; Switching from a connected state to an idle state or an inactive state according to the first information; receiving, according to configuration information of the alarm signal, the alarm signal being associated with a first paging occasion PO, a decoding or detection threshold of the alarm signal being lower than a decoding or detection threshold of second information, the second information being information for paging, information for waking up a terminal, or information for synchronization; According to the alarm signal, on the first PO, the idle state or the inactive state is switched to the connected state, and the information used for paging is monitored.

2. The method according to claim 1, characterized in that The configuration information of the alarm signal includes a time offset of the alarm signal relative to the first PO.

3. The method according to claim 1 or 2, characterized in that Also includes: Receive downlink signal; Determining a signal quality of the downlink signal; When the signal quality of the downlink signal is less than or equal to the threshold, the step of receiving the alarm signal according to the configuration information of the alarm signal is performed.

4. The method according to any one of claims 1 to 3, characterized in that The alarm signal is a synchronization signal.

5. The method according to claim 4, characterized in that The synchronization signal is transmitted repeatedly for multiple times, and / or the power of the synchronization signal is greater than the power of the information used for paging.

6. The method according to any one of claims 1 to 5, characterized in that The step of switching from the idle state or the inactive state to the connected state on the first PO according to the alarm signal and monitoring the information for paging includes: descrambling the warning signal according to a first sequence, the first sequence being associated with a terminal; When the descrambling is successful, the idle state or the inactive state is switched to the connected state on the first PO to monitor the information used for paging.

7. The method according to any one of claims 1 to 6, characterized in that Also includes: When the alarm signal is received, starting a first timer; When the first timer times out, the paging information is monitored on a second PO, where the second PO belongs to the first PO.

8. The method according to any one of claims 1 to 6, characterized in that Also includes: When the alarm signal is received, starting a first timer; During the operation of the first timer, when the signal quality of the received downlink signal is greater than a threshold, sending a notification message, wherein the notification message is used to instruct the terminal to monitor the information used for paging on a third PO, and the third PO belongs to the first PO; On the third PO, the information used for paging is monitored.

9. The method according to claim 7 or 8, characterized in that Also includes: When the first timer times out, starting a second timer; During the operation of the second timer, downlink synchronization is performed with the access network device.

10. A paging method, characterized in that: include: Sending first information, where the first information is used to instruct the terminal to switch from a connected state to an idle state or an inactive state, and the first information includes configuration information of an alarm signal; Sending the alarm signal according to the configuration information of the alarm signal, where the alarm signal is associated with a first paging opportunity PO, a decoding or detection threshold of the alarm signal is lower than a decoding or detection threshold of second information, where the second information is information for paging, information for waking up a terminal, or information for synchronization; According to the alarm signal, information for paging is sent on the first PO.

11. The method according to claim 10, characterized in that The configuration information of the alarm signal includes a time offset of the alarm signal relative to the first PO.

12. The method according to claim 10 or 11, characterized in that Before sending the alarm signal, the method further includes: sending a downlink signal.

13. The method according to any one of claims 10 to 12, characterized in that The alarm signal is a synchronization signal.

14. The method according to claim 13, characterized in that The synchronization signal is transmitted repeatedly for multiple times, and / or the power of the synchronization signal is greater than the power of the information used for paging.

15. The method according to any one of claims 10 to 14, characterized in that The alert signal is scrambled using a first sequence, and the first sequence is associated with the terminal.

16. The method according to any one of claims 10 to 15, characterized in that Also includes: When the alarm signal is sent, starting a first timer; When the first timer times out, the paging information is sent on a second PO, where the second PO belongs to the first PO.

17. The method according to any one of claims 10 to 15, characterized in that Also includes: When the alarm signal is sent, starting a first timer; During the running of the first timer, receiving a notification message, the notification message is used to instruct the terminal to monitor the information for paging on a third PO, and the third PO belongs to the first PO; The paging information is sent on the third PO.

18. The method according to claim 16 or 17, characterized in that Also includes: When the first timer times out, starting a second timer; During the running of the second timer, downlink synchronization is performed with the terminal.

19. A device, characterized in that: The method comprises means for implementing the method according to any one of claims 1 to 9.

20. A device, characterized in that: The method comprises a processor and a memory, wherein the processor and the memory are coupled, and the processor is used to implement the method according to any one of claims 1 to 9.

21. A device, characterized in that: The device comprises a processor and an interface circuit, wherein the interface circuit is used to receive signals from other devices outside the device and transmit them to the processor or send signals from the processor to other devices outside the device, and the processor is used to implement the method as described in any one of claims 1 to 9 through logic circuits or execution code instructions.

22. A device, characterized in that: Comprising means for implementing the method according to any one of claims 10 to 18.

23. A device, characterized in that: The method comprises a processor and a memory, wherein the processor and the memory are coupled, and the processor is configured to implement the method according to any one of claims 10 to 18.

24. A device, characterized in that: It includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other devices outside the device and transmit them to the processor or send signals from the processor to other devices outside the device, and the processor is used to implement the method as described in any one of claims 10 to 18 through logic circuits or executing code instructions.

25. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and the instructions are executed on a computer to enable the computer to execute the method of any one of claims 1 to 9, or the method of any one of claims 10 to 18.

26. A computer program product, characterized in that The device comprises a computer program or an instruction, and when the computer program or the instruction is executed by the device, the method according to any one of claims 1 to 9 is executed, or the method according to any one of claims 10 to 18 is executed.

27. A chip, characterized in that: The chip comprises a processor, which is coupled to a memory and is used to execute a computer program or instruction stored in the memory, so that the chip implements the method of any one of claims 1 to 9, or implements the method of any one of claims 10 to 18.

28. A communication system, characterized in that: include: A first communication device, the first communication device being configured to perform the method according to any one of claims 1 to 9; A second communication device, wherein the second communication device is configured to execute the method according to any one of claims 10 to 18.

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