CN118283537A - Communication method and device - Google Patents

Abstract

The application relates to a communication method and a communication device. If the first condition is satisfied, the first terminal device detects a first PO, which is different from a PO corresponding to the first terminal device. The first condition includes any one of: and the first terminal equipment moves to the target cell or before the first terminal equipment leaves the source cell when the PO corresponding to the first terminal equipment does not detect the DCI scrambled by the P-RNTI. The terminal equipment in the embodiment of the application can detect the PO corresponding to the terminal equipment and the PO different from the PO corresponding to the terminal equipment, and the range of the PO which can be detected by the terminal equipment is enlarged, so that the success rate of detecting DCI by the terminal equipment is improved, and the success rate of receiving multicast service by the terminal equipment is further improved.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus.

Background

The terminal device may monitor downlink control information (downlink control information, DCI) scrambled by a paging radio network temporary identifier (paging radio network temporary identifier, P-RNTI) at a Paging Occasion (PO), and after receiving the DCI scrambled by the P-RNTI, the terminal device in an inactive (RRC) state or an idle (idle) state of radio resource control (radio resource control, RRC) may receive a paging message according to scheduling information in the DCI. The paging message may be used to page a single UE, e.g., the paging message carries the UE's identification information; or a paging message may be used to inform multicast activation, for example, the paging message carries an identification of the multicast service.

Currently, a UE capable of supporting an RRC inactive state receives a multicast service. For example, the base station may send a paging message to notify multicast activation, which may carry an identification of the multicast service. The UE may then receive the multicast data/service in the RRC inactive state. And the UE receives the paging message, first receives the P-RNTI scrambled DCI for scheduling the paging message. However, the UE may have detection failure or missed detection in the process of detecting the DCI scrambled by the P-RNTI, so that the UE cannot receive the DCI scrambled by the P-RNTI, and thus cannot further receive the paging message, and thus cannot learn that the multicast is activated, and cannot receive the multicast service.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which are used for improving the success rate of multicast service reception of terminal equipment.

In a first aspect, a first communication method is provided, which may be performed by a terminal device, or by another device comprising the functionality of the terminal device, or by a chip system (or chip) or other functional module, which is capable of implementing the functionality of the terminal device, the chip system or functional module being provided in the terminal device, for example. This terminal device is also referred to as a first terminal device, for example. The method comprises the following steps: and if the first condition is met, the first terminal equipment detects a first O, wherein the first PO is different from the PO corresponding to the first terminal equipment. Wherein the first condition includes any one of: and the first terminal equipment moves to a target cell or leaves the first terminal equipment before the PO corresponding to the first terminal equipment does not detect the DCI scrambled by the P-RNTI.

In the embodiment of the present application, if the first condition is satisfied, the first terminal device may detect DCI at a first PO different from a PO corresponding to the first terminal device. Therefore, the terminal equipment in the embodiment of the application not only can detect the PO corresponding to the terminal equipment, but also can detect the PO different from the PO corresponding to the terminal equipment, thereby expanding the range of the PO which can be detected by the terminal equipment. Even if the terminal equipment fails to detect or fails to detect the DCI in the PO corresponding to the terminal equipment, the terminal equipment can also successfully detect the DCI in the PO different from the PO corresponding to the terminal equipment, thereby improving the success rate of detecting the DCI by the terminal equipment and further improving the success rate of receiving the multicast service by the terminal equipment.

In an optional implementation manner, the first terminal device does not detect the DCI scrambled by the P-RNTI at the PO corresponding to the first terminal device, including: the first terminal equipment does not detect the DCI scrambled by the P-RNTI in Y continuous POs, wherein the Y POs are POs corresponding to the first terminal equipment, and Y is a positive integer; or the first terminal equipment reaches a second time when the PO corresponding to the first terminal equipment does not detect the DCI scrambled by the P-RNTI. The first condition includes that the first terminal device does not detect DCI scrambled by the P-RNTI at the PO corresponding to the first terminal device, and the condition may include an implementation manner as shown above. For example, if the first terminal device does not detect the DCI scrambled by the P-RNTI at one PO corresponding to the first terminal device, it may be that the network device does not send the DCI scrambled by the P-RNTI, or it may also be that the first terminal device fails to detect the DCI scrambled by the P-RNTI at the PO, in which case the first terminal device may continue to detect the PO corresponding to the first terminal device, without immediately starting to detect a PO different from the PO corresponding to the first terminal device, so as to save power consumption of the first terminal device. If the first terminal device does not detect the DCI scrambled by the P-RNTI at Y consecutive POs or the first terminal device does not detect the DCI scrambled by the P-RNTI at a PO corresponding to the first terminal device for a long period of time (for example, reaching the second period of time), the first terminal device may detect a PO different from the PO corresponding to the first terminal device, so as to reduce the probability of failure or omission of DCI detection.

In an alternative embodiment, the value of Y is related to the number of times the multicast activation notification is sent, e.g., Y equals the number of times the multicast activation notification is sent; or, the value of the second time period is related to the time period of sending the multicast activation notification, for example, the second time period is equal to the time period of sending the multicast activation notification. For example, if the first terminal device does not detect the DCI scrambled by the P-RNTI in Y consecutive POs, it indicates that there may be a detection failure or missing detection, so the first terminal device may detect a PO different from the PO corresponding to the first terminal device, so as to improve the success rate of detecting the DCI. For another example, the multicast activation notification is sent in the second duration, and if the second terminal device does not detect the DCI scrambled by the P-RNTI in the second duration, it indicates that there may be a detection failure or a missing detection, so the first terminal device may detect a PO different from a PO corresponding to the first terminal device, so as to improve the success rate of detecting the DCI.

In an alternative embodiment, the first terminal device moves to a target cell, including: the first terminal equipment moves to the target cell, and the time interval between the first time and the PO corresponding to the first terminal equipment is larger than or equal to a first threshold value; wherein the first time is associated with a time at which the first terminal device moves to the target cell. The first condition may include the first terminal device moving to the target cell, and optionally the condition may further include a time interval between the first time and a PO corresponding to the first terminal device being greater than or equal to a first threshold. It is understood that if the time interval between the first time and the PO of the first terminal device is greater than or equal to the first threshold value, it is indicated that there is a period of time from the first terminal device detecting the PO of the first terminal device, between which the network device may have sent a multicast activation notification. Therefore, in order to reduce the time delay of the first terminal device receiving the multicast activation notification or in order to avoid the first terminal device missing the multicast activation notification, the first terminal device may detect a PO different from a PO corresponding to the first terminal device before detecting the PO of the first terminal device, thereby not only reducing the time delay of the first terminal device receiving the multicast activation notification or avoiding the first terminal device missing the multicast activation notification, but also improving the detection success rate of the first terminal device.

In an alternative embodiment, before the first terminal device leaves the source cell, the method includes: before the first terminal equipment leaves the source cell, and the second time is after the last PO corresponding to the first terminal equipment; or, before the first terminal device leaves the source cell, and a time interval between a second time and a time when the first terminal device leaves the source cell is less than or equal to a second threshold. Wherein the second time is associated with a time when the first terminal device leaves the source cell. The first condition may include that before the first terminal device leaves the source cell, optionally, the condition may further include that the second time is located after the last PO corresponding to the first terminal device, or that a time interval between the second time and a time when the first terminal device leaves the source cell is less than or equal to a second threshold. It will be appreciated that there is a period of time between the first terminal device leaving the source cell, in which case the network device may have sent a multicast activation notification, in which case the first terminal device may miss the multicast activation notification, or the delay in receipt of the multicast activation notification by the first terminal device may be relatively large. In this case, therefore, the first terminal device may detect a PO, such as the first PO, different from the PO corresponding to the first terminal device in the source cell, thereby not only reducing the delay of the first terminal device receiving the multicast activation notification or avoiding the first terminal device missing the multicast activation notification, but also improving the detection success rate of the first terminal device.

In an alternative embodiment, the method further comprises: and if the second condition is met, stopping detecting the PO which is different from the PO corresponding to the first terminal equipment by the first terminal equipment. Wherein the second condition comprises any one of: the first terminal equipment detects the DCI scrambled by the P-RNTI at the first PO, or the first terminal equipment detects the DCI scrambled by the P-RNTI at the PO corresponding to the first terminal equipment, and the first terminal equipment does not detect the DCI scrambled by the P-RNTI at the first PO, or the PO corresponding to the first terminal equipment arrives. The first terminal device may not always detect a PO different from a PO corresponding to the first terminal device, for example, when a corresponding condition (e.g., the second condition) is satisfied, the first terminal device may also stop detecting a PO different from a PO corresponding to the first terminal device, thereby enabling to reduce power consumption of the first terminal device.

In an alternative embodiment, the first PO includes consecutive X POs, X being an integer greater than 1; the first terminal device does not detect the DCI scrambled by the P-RNTI at the first PO, including: and the first terminal equipment does not detect the DCI scrambled by the P-RNTI at the X POs. If the first terminal device does not detect the P-RNTI scrambled DCI at consecutive X POs, indicating that the network device may not transmit the multicast activation notification, the first terminal device may stop detecting a PO different from the PO corresponding to the first terminal device.

In an alternative embodiment, the method further comprises: the first terminal device receives configuration information from the network device, the configuration information being used to configure one or more of Y, X, the second duration, the first threshold, or the second threshold. These parameters may be configured by the network device as above, or may be predefined by the protocol, or may be preconfigured in the first terminal device, and the specific configuration manner is not limited.

In an alternative embodiment, the first terminal device joins a first multicast, wherein the first multicast is deactivated. The first multicast is deactivated and the network device may activate the first multicast again, so the first terminal device may detect the multicast activation notification to determine if the first multicast is activated.

In an alternative embodiment, the first terminal device is in an RRC non-connected state, and/or the first terminal device supports receiving multicast in an RRC non-active state.

In an alternative embodiment, the method further comprises: and receiving indication information from the network equipment, wherein the indication information is used for indicating to start or allow to detect the PO which is different from the PO corresponding to the first terminal equipment. A terminal device can detect a different PO than the PO corresponding to the terminal device, which can be regarded as a function or a mode, and the function or the mode can be controlled to be turned on or off by a network device, so that the implementation of the scheme is more flexible.

In a second aspect, a second communication method is provided, which may be performed by a network device, or by another device comprising the functionality of the network device, or by a system-on-chip (or chip) or other functional module capable of implementing the functionality of the network device, the system-on-chip or functional module being provided in the network device, for example. Alternatively, the network device is, for example, an access network device, such as a base station. The method comprises the following steps: the network device sends indication information, wherein the indication information is used for indicating to start or allowing to detect the PO which is different from the PO corresponding to the first terminal device.

In an alternative embodiment, the method further comprises: the network device sends configuration information, where the configuration information is used to configure one or more of a first threshold, a second duration, X, or Y, where one or more of the first threshold, the second duration, or Y is used by the first terminal device to determine whether to detect a PO different from a PO corresponding to the first terminal device, and X is used by the first terminal device to determine whether to stop detecting a PO different from a PO corresponding to the first terminal device.

Regarding the technical effects brought about by the second aspect or various alternative embodiments, reference may be made to the description of the technical effects of the first aspect or corresponding embodiments.

In a third aspect, a communication device is provided. The communication device may be the first terminal apparatus of any one of the first to second aspects. The communication device has the function of the first terminal device. The communication means are for example a first terminal device, or a larger device comprising the first terminal device, or a functional module in the first terminal device, such as a baseband device or a system on chip, etc. In an alternative implementation, the communication device includes a baseband device and a radio frequency device. In another alternative implementation, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). The transceiver unit can realize a transmission function and a reception function, and may be referred to as a transmission unit (sometimes referred to as a transmission module) when the transceiver unit realizes the transmission function, and may be referred to as a reception unit (sometimes referred to as a reception module) when the transceiver unit realizes the reception function. The transmitting unit and the receiving unit may be the same functional module, which is called a transceiver unit, and which can implement a transmitting function and a receiving function; or the transmitting unit and the receiving unit may be different functional modules, and the transceiver unit is a generic term for these functional modules.

In an alternative embodiment, the transceiver unit (or the receiving unit) is configured to detect a first PO if a first condition is met, where the first PO is different from a PO corresponding to the first terminal device. Wherein the first condition includes any one of: and the first terminal equipment moves to a target cell or leaves the first terminal equipment before the PO corresponding to the first terminal equipment does not detect the DCI scrambled by the P-RNTI.

Or in another alternative embodiment, the processing unit is configured to determine that the first condition is satisfied; the receiving and transmitting unit (or the receiving unit) is configured to detect a first PO, where the first PO is different from a PO corresponding to the first terminal device. Wherein the first condition includes any one of: and the first terminal equipment moves to a target cell or leaves the first terminal equipment before the PO corresponding to the first terminal equipment does not detect the DCI scrambled by the P-RNTI.

In an alternative embodiment, the communication apparatus further comprises a storage unit (sometimes also referred to as a storage module), the processing unit being configured to be coupled to the storage unit and execute a program or instructions in the storage unit, to enable the communication apparatus to perform the functions of the first terminal device according to any one of the first to second aspects.

In a fourth aspect, a communication device is provided. The communication means may be a network device according to any one of the first to second aspects. The communication device has the functions of the network device. The communication means are for example network devices, or larger devices comprising network devices, or functional modules in network devices, such as baseband means or chip systems etc. In an alternative implementation, the communication device includes a baseband device and a radio frequency device. In another alternative implementation, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). Reference may be made to the description of the third aspect for an implementation of the transceiver unit.

In an alternative embodiment, the transceiver unit (or the sending unit) is configured to send indication information, where the indication information is used to indicate that a PO different from a PO corresponding to the first terminal device is turned on or allowed to be detected.

Or in another alternative embodiment, the processing unit is configured to determine that the first terminal device is allowed to detect a PO different from a PO corresponding to the first terminal device; the receiving and transmitting unit (or the sending unit) is configured to send indication information, where the indication information is used to indicate to start or allow to detect a PO different from a PO corresponding to the first terminal device.

In an alternative embodiment, the communication device further comprises a storage unit (sometimes also referred to as a storage module), the processing unit being configured to be coupled to the storage unit and execute a program or instructions in the storage unit, to enable the communication device to perform the functions of the network apparatus according to any one of the first to second aspects.

In a fifth aspect, a communication apparatus is provided, which may be the first terminal device, or a chip system for use in the first terminal device. The communication device comprises a communication interface and a processor, and optionally a memory. Wherein the memory is configured to store a computer program, and the processor is coupled to the memory and the communication interface, and when the processor reads the computer program or instructions, the processor causes the communication device to perform the method performed by the first terminal device in the above aspects.

In a sixth aspect, a communication apparatus is provided, which may be a network device, or a chip system for use in a network device. The communication device comprises a communication interface and a processor, and optionally a memory. Wherein the memory is configured to store a computer program, and the processor is coupled to the memory and the communication interface, and when the processor reads the computer program or instructions, the processor causes the communication device to perform the method performed by the network device in the above aspects.

A seventh aspect provides a communication system comprising a first terminal device for performing the method performed by the first terminal device according to any of the first to second aspects, and a network device for performing the method performed by the network device according to any of the first to second aspects. For example, the first terminal device may be implemented by the communication apparatus described in the third aspect or the fifth aspect; the network device may be implemented by the communication apparatus of the fourth or sixth aspect.

In an eighth aspect, a computer readable storage medium is provided for storing a computer program or instructions that, when executed, cause a method performed by a first terminal device or a network device in the above aspects to be implemented.

In a ninth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the method of the above aspects to be carried out.

In a tenth aspect, a chip system is provided, including a processor and an interface, where the processor is configured to invoke and execute instructions from the interface to cause the chip system to implement the methods of the above aspects.

Drawings

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application;

FIG. 2 is a flow chart of a communication method according to an embodiment of the present application;

fig. 3A is a schematic diagram of a first UE detecting a PO different from a PO corresponding to the first UE according to an embodiment of the application;

FIG. 3B is a schematic diagram of a second duration under condition 1 in an embodiment of the present application;

FIG. 4 is a schematic diagram of an apparatus according to an embodiment of the present application;

fig. 5 is a schematic view of yet another apparatus according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

In the embodiments of the present application, the number of nouns, unless otherwise indicated, means "a singular noun or a plural noun", i.e. "one or more". "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. For example, A/B, means: a or B. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c, represents: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c may be single or plural.

The ordinal terms such as "first," "second," and the like in the embodiments of the present application are used for distinguishing a plurality of objects, and are not used for limiting the size, content, sequence, timing, priority, importance, and the like of the plurality of objects. For example, the first threshold value and the second threshold value may be the same threshold value or different threshold values, and the names do not indicate the difference in the values, application scenes, priorities, importance, or the like of the two threshold values. In addition, the numbers of the steps in the embodiments described in the present application are only for distinguishing different steps, and are not used for limiting the sequence of the steps. For example, S201 may occur before S202, or may occur after S202, or may also occur concurrently with S202.

In the following, some terms or concepts in the embodiments of the present application are explained for easy understanding by those skilled in the art.

(1) And a terminal device.

In the embodiment of the application, the terminal device is a device with a wireless transceiver function, and may be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless apparatus (such as a communication module, a modem, or a chip system) built in the device. The terminal device is used for connecting people, objects, machines and the like, and can be widely used in various scenes, including but not limited to the following scenes: cellular communication, device-to-device communication (D2D), vehicle-to-everything (vehicle to everything, V2X), machine-to-machine/machine-class communication (M2M/MTC), internet of things (internet of things, ioT), virtual Reality (VR), augmented reality (augmented reality, AR), industrial control (industrial control), unmanned (SELF DRIVING), remote medical (remote medium), smart grid (SMART GRID), smart furniture, smart office, smart wear, smart traffic, smart city (SMART CITY), unmanned aerial vehicle, robotic, etc. scenarios. The terminal device may sometimes be referred to as a UE, a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user equipment, among others. For convenience of description, in the embodiment of the present application, a UE is taken as an example for illustrating a terminal device.

In the embodiment of the present application, the communication device for implementing the function of the terminal device may be the terminal device, or may be a device capable of implementing the function, for example, a chip system, and the device may be installed in the terminal device. In the technical solution provided in the embodiment of the present application, the device for implementing the function of the terminal device is taken as an example of the terminal device, and the technical solution provided in the embodiment of the present application is described.

(2) A network device.

The network device in the embodiment of the application comprises an access network device and/or a core network device. The access network equipment is equipment with a wireless receiving and transmitting function and is used for communicating with the terminal equipment. The access network devices include, but are not limited to, base stations (base transceiver stations (base transceiver station, BTS), node B, eNodeB/eNB, or gNodeB/gNB), transceiver points (transmission reception point, TRP), base stations for subsequent evolution of the third generation partnership project (3rd generation partnership project,3GPP), access nodes in wireless fidelity (WIRELESS FIDELITY, wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, and the like. The base station may be: macro base station, micro base station, pico base station, small station, relay station, etc. Multiple base stations may support networks of the same access technology or may support networks of different access technologies. A base station may comprise one or more co-sited or non-co-sited transmission reception points. The access network device may also be a radio controller, a centralized unit (centralized unit, CU), and/or a Distributed Unit (DU) in the context of a cloud radio access network (cloud radio access network, CRAN). The access network device may also be a server or the like. For example, a network device in the internet of vehicles (vehicle to everything, V2X) technology may be a Road Side Unit (RSU). The following describes an access network device using a base station as an example. The base station may communicate with the terminal device or may communicate with the terminal device through the relay station. A terminal device may communicate with multiple base stations in different access technologies. The core network device is used for realizing the functions of mobile management, data processing, session management, policy and charging, etc. The names of devices implementing the core network function in the systems of different access technologies may be different, and the embodiment of the present application is not limited to this. Taking a 5G system as an example, the core network device includes: access and mobility management functions (ACCESS AND mobility management function, AMF), session management functions (session management function, SMF), policy control functions (policy control function, PCF), or user plane functions (user plane function, UPF), etc.

In the embodiment of the present application, the communication device for implementing the function of the network device may be a network device, or may be a device capable of implementing the function, for example, a chip system, and the device may be installed in the network device. In the technical solution provided in the embodiment of the present application, the device for implementing the function of the network device is exemplified by the network device, and the technical solution provided in the embodiment of the present application is described.

(3) Paging (Paging).

The objectives of Paging may include: allowing the network to reach the UE in RRC idle state and RRC inactive state through a paging message (PAGING MESSAGE); the RRC idle state, the RRC inactive state and the UE in the RRC CONNECTED (CONNECTED) state are notified by a short message (short message): system message changes, earthquake and tsunami warning systems (earthquake and tsunami WARNING SYSTEM, ETWS) and/or commercial mobile alert services (commercial mobile ALERT SERVICE, CMAS) indications.

PAGING MESSAGE may be transmitted on a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) and the short message may be transmitted directly on a physical downlink control channel (physical downlink control channel, PDCCH) (e.g., downlink control information (downlink control information, DCI)).

The UE in RRC idle state may receive a Core Network (CN) triggered page, and the UE in RRC inactive state may receive a CN-initiated page or a radio access network (radio access network, RAN) initiated page. When the UE receives the paging initiated by the RAN, the UE starts an RRC connection recovery (RRC Connection Resume) process and determines a recovery reason (resumeCause) according to the value of the access identifier (ACCESS IDENTITY, AI) configured by the upper layer; when the UE in the RRC inactive state receives the paging initiated by the CN, the UE enters an RRC idle state and initiates RRC connection establishment. This section of content pertains to unicast related paging. There are also multicast-related pages, which will be described later.

For example, RAN initiated paging may be understood as RAN paging.

For example, CN initiated paging may be understood as CN paging.

For example, a PO of an embodiment of the present application may include one or more Radio Frames (RF), subframes (subframes), slots (slots), and the like, which are not particularly limited.

The time domain resource/time domain resource related to the embodiment of the present application may be a time interval, for example, a radio frame, a subframe, a time slot, an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol (symbol), a mini-slot (mini-slot), and the like, which is not limited.

There may be one or more paging frames (PAGING FRAME, PF) within one discontinuous reception (discontinuous reception, DRX) cycle.

From the UE-to-page listening perspective, the UE may listen to one PO per DRX cycle (cycle) for power saving purposes, now for the case where DRX is configured for the UE in RRC idle state or RRC inactive state. Wherein one PO may include/be a set of PDCCH listening occasions (monitoring occasions). For example, one PO may be composed of a plurality of time slots (e.g., subframes or OFDM symbols) in which paging DCI may be transmitted. One PF may be one radio frame. A PF may contain one or more POs or a starting point for one or more POs.

Typically, for a UE in RRC idle state or a UE in RRC inactive state, the UE wakes up (i.e., listens to pages) once at the PO corresponding to the UE in each paging cycle, while regarding the scheduling information and shortmessage of the paging message.

The DCI corresponding to the paging message (or paging DCI) is scrambled by the P-RNTI.

Currently, the PO may be determined by the identity of the UE (e.g., UE_ID). For example, the PF may be determined by the following formula:

(sfn+pf_offset) mod t= (tdiv N) ×ue_id mod N) (formula 1)

The index of the PO (index (i_s)) can be found from the following formula:

i_s=floor (ue_id/N) mod Ns. (equation 2)

The UE may determine, through i_s, a PO corresponding to the UE in the PF.

The meaning of each parameter in the above formula is as follows:

(1) T denotes a DRX cycle of the UE.

(2) N represents the number of PFs in the DRX cycle.

(3) Ns represents the number of POs in a PF.

(4) Ue_id is, for example, a fifth generation (5th generation,5G) -system or service or short (S) -temporary mobile subscription identity (temporary mobile subscription identifier, TMSI) mod 1024, i.e., ue_id is 5G-S-TMSI mod constant 1. The constant 1 is 1024 or 4096 or 8192 or 32768, etc. mod represents the remainder operation. If the UE does not have a 5G-S-TMSI, for example, the UE should use ue_id=0 when the UE has not been registered with the network.

(5) Pf_offset represents an offset (offset) used to determine the PF.

Wherein the parameter values of N, ns, pf_offset, etc. may be broadcasted by the network in the system information (e.g. system information block 1 (systeminformation block, SIB 1).

The DRX cycle T of the UE may be determined according to the following rule, and the shortest DRX cycle that the UE in the RRC idle state and the UE in the RRC inactive state may use. For example, the UE in RRC idle state uses a shorter DRX cycle of the following a and b; the UE in the RRC inactive state uses the shortest DRX cycle among the following a, b, and c.

A. A default DRX cycle broadcast in a system message (e.g., SIB 1).

B. UE and core network negotiate a UE specific (specific) DRX cycle.

C. The network (e.g., RAN) sends a UE specific DRX cycle to the UE.

(6) RRC connected state/RRC inactive state/RRC idle state.

Currently, there are three RRC states, namely an RRC connected state, an RRC inactive state and an RRC idle state.

For example, when the UE accesses the network, after establishing an RRC connection with the serving base station, the UE is in an RRC connected state, and may exchange data and signaling with the serving base station normally.

For example, for a UE in RRC idle state, the serving base station may release the context information of the UE, which may take a longer time to enter RRC connected state from RRC idle state.

The RRC inactive state is one state between an RRC connected state and an RRC idle state.

For example, a UE in an RRC inactive state initiates RRC connection restoration (e.g., may send an RRC connection restoration request message) to attempt to enter an RRC connected state. The UE entering the RRC connected state from the RRC inactive state may achieve lower latency than the UE entering the RRC connected state from the RRC idle state.

(7) Multicast and unicast.

The multicast service mentioned in the embodiment of the present application may be a multimedia multicast service (multimedia broadcast multicast service, MBMS) under a long term evolution (long term evolution, LTE) system or a multicast and broadcast service (multicast and broadcast service, MBS) under a New Radio (NR) system. MBS is introduced by the third generation partnership project (3rd generation partnership project,3GPP) for efficient use of mobile communication network resources, which provides a point-to-multipoint service in which one data source transmits data to a plurality of users in a mobile communication network, to achieve network resource sharing, and to improve resource utilization, especially air interface resources. NR MBS supports multicast and broadcast.

The multicast in the embodiment of the application can be replaced by the nouns such as multicast, and the corresponding multicast service can be replaced by the multicast service, and the identifier of the multicast service can be replaced by the multicast service identifier.

Wherein the broadcast may provide the same service and/or the same content data to all UEs within one geographical area at the same time. Broadcast (broadcast) may be for all UEs within an area. Multicasting may provide the same service and/or the same content data to a group of dedicated UEs at the same time (i.e., not all UEs in coverage are authorized to receive the data).

Multicasting may be for a particular set of UEs, which may need to perform a "group joining procedure.

Correspondingly, unicast may be understood as providing the same service and/or the same content data to one UE. Unicast can be understood as: for one data, if it is to be transmitted to a plurality of devices, it is necessary to transmit the data separately to each device.

In the embodiment of the application, the identifier may include/be replaced by/be understood as information, and is not necessarily limited to the identifier.

In the embodiment of the application, the multicast service activation can be included/replaced by/understood as multicast session activation or MBS session activation.

In the embodiment of the present application, the multicast service may include/be replaced with/understood as: multicast session, or MBS service.

For example, unicast related pages or unicast pages may include RAN pages and/or CN pages.

In the prior art, multicast services have corresponding multicast sessions. The multicast session has an active and a deactivated state, and for a UE that has joined the multicast session, when the multicast session is deactivated and the UE has no unicast traffic, the UE may enter an RRC idle state, and may also enter an RRC inactive state. When a multicast session is active, the network device needs to receive multicast traffic by sending a multicast session active notification (alternatively referred to as a multicast active notification) to inform the UE to enter the RRC connected state.

Currently, the network device may send a multicast activation notification by sending a page, for example, the paging message may include an identifier (e.g., MBS Identification (ID)) of the multicast service to indicate that the multicast service is activated. The control information (e.g., paging DCI) corresponding to the paging message carrying the multicast activation notification is also sent on the UE's existing POs (e.g., the computational-related content of the POs introduced above). This section of content pertains to multicast/MBS related paging.

For multicast traffic, the flow of activation/deactivation is currently defined. For example, a multicast service may be deactivated, after which the UE no longer detects/receives the multicast service. If the multicast service is activated, the network device may send a paging message to notify the multicast service of activation, the paging message may include an identification of the multicast service, which may be considered as a multicast activation notification. After receiving the paging message, the UE determines that the multicast service is activated, and may start detecting/receiving the multicast service. At present, the UE is supported to receive the multicast service in the RRC inactive state, for example, the UE can enter a connection state after receiving the multicast activation notification; or may not enter the RRC connected state but may detect/receive multicast traffic in the RRC inactive state. For example, for whether the UE can detect/receive multicast traffic in RRC inactive state, or for whether the UE needs to enter RRC connected state, the UE may be determined based on paging messages (e.g., an indication of per multicast traffic) or indications in paging DCI, or the UE may be determined based on information or indications in DCI or MCCH messages of MCCH modification notification or scheduling MCCH messages (e.g., depending on whether configuration information or PTM configuration information for the multicast traffic is contained in the MCCH message).

For example, the network device may send a multicast configuration (e.g., a point-to-multipoint (PTM) configuration) before or when the UE enters the RRC inactive state, according to which the UE may then receive multicast traffic in the RRC inactive state. For example, the network device may send a PTM configuration to the UE via a dedicated message, e.g. an RRC release (release) message, for releasing the UE to an RRC inactive state. In this case, if the UE receives a multicast activation notification in the RRC inactive state, the UE can detect/receive multicast traffic in the RRC inactive state. For another example, the UE may detect the MCCH in either the RRC connected state, the RRC inactive state, or the RRC idle state, and the access network device may send a PTM configuration to the UE over an MBS control channel (MBS control channel, MCCH). In this case, if the UE receives the multicast activation notification in the RRC inactive state, the UE may detect the MCCH to receive the PTM configuration, and then detect/receive the multicast service in the RRC inactive state according to the PTM configuration after receiving the PTM configuration.

The UE is to receive the multicast activation notification and first to receive DCI for scheduling a paging message containing the multicast activation notification. In the process of detecting the DCI scrambled by the P-RNTI, the UE may have detection failure or missing detection and the like, so that the UE cannot receive the DCI scrambled by the P-RNTI, and thus cannot further receive the multicast activation notification, and thus cannot learn the multicast activation, and cannot receive the multicast service.

In view of this, a technical solution of the embodiment of the present application is provided. In the embodiment of the present application, if the first condition is satisfied, the first UE may detect DCI at a PO (e.g., a first PO) different from a PO corresponding to the first UE. Therefore, the UE in the embodiment of the application not only can detect the PO of the UE, but also can detect the PO different from the PO corresponding to the first UE, thereby expanding the range of the PO which can be detected by the UE. Even if the UE fails to detect or fails to detect the DCI scrambled by the P-RNTI at the own PO, the UE can also successfully detect the DCI at a PO different from the PO corresponding to the first UE, so that the success rate of receiving the DCI scrambled by the P-RNTI by the UE is improved, the UE is prevented from missing a multicast activation notification, or the probability of missing the multicast activation notification by the UE is reduced, and the reliability of receiving the multicast service by the UE is further improved; or the delay of receiving the multicast activation notification by the UE is reduced, so that the delay of receiving the multicast service by the UE is reduced.

The technical scheme provided by the embodiment of the application can be applied to a fourth generation mobile communication technology (the 4th generation,4G) system, such as an LTE system, or can be applied to a 5G system, such as an NR system, or can be applied to a next generation mobile communication system or other similar communication systems, and is particularly not limited. In addition, the technical scheme provided by the embodiment of the application can be applied to device-to-device (D2D) scenes, such as NR-D2D scenes and the like, or can be applied to vehicle-to-everything (vehicle to everything, V2X) scenes, such as NR-V2X scenes and the like. For example, the method can be applied to the Internet of vehicles, such as V2X, vehicle-to-vehicle (V2V) and the like, or can be applied to the fields of intelligent driving, auxiliary driving, intelligent network vehicle linkage and the like.

Illustratively, fig. 1 is a communication network architecture in which a UE is capable of communicating with a network device, as applicable to embodiments of the present application. The network device comprises, for example, an access network device and/or a core network device, etc. Wherein fig. 1 is only an example, and the device morphology in fig. 1 does not represent the actual morphology of the network device and the UE.

In the embodiment of the application, the detection can comprise or be replaced by: and (5) receiving. For example, "undetected" may include or be replaced with: "not received".

In order to better describe the embodiments of the present application, the method provided by the embodiments of the present application is described below with reference to the accompanying drawings.

In various embodiments of the application, the RRC non-connected state includes, for example, an RRC inactive state or an RRC idle state. In the drawings corresponding to the embodiments of the present application, the steps indicated by the broken lines are optional steps unless specifically described below. The method described in the embodiments of the present application may be applied to the network architecture shown in fig. 1, for example, the first UE involved in the embodiments of the present application may be the UE in fig. 1, and the network device involved in the embodiments of the present application may be the network device in fig. 1.

An embodiment of the present application provides a first communication method, please refer to fig. 2, which is a flowchart of the method.

S201, if the first condition is satisfied, the first UE detects (monitor or detect) the first PO. Or if the first condition is satisfied, the first UE detects/receives DCI or P-RNTI scrambled DCI at the first PO.

Alternatively, S201 may be understood as two steps. If S201 is understood as two steps, one of which is that the first UE determines whether the first condition is satisfied, and the other of which is that the first UE detects the first PO if the first condition is satisfied. Or if S201 is understood as two steps, one of which is that the first UE determines that the first condition is satisfied, and the other of which is that the first UE detects the first PO.

Alternatively, the first PO may comprise an actually present PO and/or an actually absent PO. For an actually existing PO, the network device may send a page at the PO; for a PO that does not actually exist, the network device may not send a page at that PO. For example, the first UE may select the ue_id within a certain value range (e.g., 0 to 1023), and then determine a PO (e.g., a first PO) different from the PO corresponding to the first UE according to the foregoing equations 1 and 2.

Alternatively, the first PO need not be a PO, but may be another name. For example, the first PO may include or be replaced with: a first time domain location, or, a first time domain resource.

Alternatively, the PO different from the PO corresponding to the first UE is not necessarily a PO, and the name thereof may be other. For example, a PO different from a PO corresponding to the first UE may include or be replaced with: a different time domain location for the PO corresponding to the first UE or a different time domain resource for the PO corresponding to the first UE.

For example, the P-RNTI scrambled DCI may include/be replaced with: paging DCI. The paging DCI is not limited to be the DCI scrambled by the P-RNTI.

For example, the first UE has joined the first multicast, or the first UE is interested in the first multicast.

For example, the first multicast has been deactivated.

For example, the first multicast may also be understood as a first multicast session, and/or a first multicast service.

It is to be appreciated that after the first multicast is deactivated, the UE joining the first multicast (e.g., the first UE) need not receive the first multicast (e.g., DCI and/or data corresponding to the first multicast).

It will be appreciated that after the first multicast is deactivated, a UE joining the first multicast (e.g., the first UE) needs to monitor for a page to determine if the first multicast is activated or needs to be concerned about whether a notification of the activation of the first multicast is contained in the paging message.

For example, the first PO may be different from a PO corresponding to the first UE.

For example, the POs corresponding to the first UE may include all POs corresponding to the first UE.

For example, all of the POs corresponding to the first UE are different from the first PO.

For example, it can be understood that the first PO is a different PO than the PO corresponding to the first UE.

Alternatively, the first PO may comprise one or more POs.

For example, there may be multiple POs that are different from the POs corresponding to the first UE, the first PO may include a portion of the multiple POs (e.g., include any one or more POs of the multiple POs), or the first PO may include all of the multiple POs.

For example, the first PO may include X POs, X being a positive integer. For example, the X POs may be consecutive X POs, or may be non-consecutive X POs. For example, the X POs may be POs that are continuous in the time domain, or POs that are discontinuous in the time domain.

For example, X may be self-configurable by the first UE, or configured at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device. For example, the network device may send configuration information to configure the value of X. For example, the configuration information may be broadcast (e.g., sent via system messages) or unicast (e.g., sent via proprietary signaling).

For example, the first UE may determine a PO that is different from a PO corresponding to the first UE, and if the first condition is satisfied, the first UE may detect some (e.g., one or more) or all of the determined POs, e.g., detect the first PO.

Alternatively, the first PO may include a PO corresponding to the second UE (e.g., some or some of the POs corresponding to the second UE). For example, X POs are POs corresponding to the second UE, and X is a positive integer.

For example, the second UE may include one or more UEs, and it is understood that the second UE includes one or more UEs in addition to the first UE.

Alternatively, if some or all of the POs corresponding to the second UE are the same as some or all of the POs corresponding to the first UE, then these POs are also POs corresponding to the first UE. For example, the first PO may include a PO corresponding to a second UE that is different from the PO corresponding to the first UE.

Alternatively, the second UE may include any one or more UEs other than the first UE. Alternatively, if the network device is to send the first multicast-related multicast activation notification, the network device may send DCI for scheduling paging messages (or paging messages including the multicast activation notification) at all POs (or POs of all UEs covered by the network device), so if the network device sends DCI for scheduling paging messages (or paging messages including the multicast activation notification), the first UE obtains paging DCI by detecting any POs (or POs of any UE). For example, UEs other than the first UE may include UEs joining the first multicast, and may also include UEs not joining the first multicast. In this way, the range of the first UE selecting the second UE is wider, or the range of the first UE selecting the first PO is wider, for example, the first UE may select randomly, or may select the PO with the PO position closest to that of the first UE to detect, so that the detection delay can be reduced.

Or alternatively, the second UE may comprise any one or more UEs joining the first multicast, e.g., the second UE comprises some or all of the UEs joining the first multicast except the first UE. For example, if the network device is to transmit a multicast activation notification for activating the first multicast, DCI for scheduling a paging message (or a paging message including the multicast activation notification) may be transmitted at the POs of all UEs joining the first multicast, so if the network device transmits DCI for scheduling a paging message (or a paging message including the multicast activation notification), the first UE can obtain the DCI by detecting the POs of the UEs joining the first multicast. In this way, the network device does not need to send DCI at too many POs, so that power consumption of the network device can be saved, and the first UE can also implement detection of paging DCI by selecting an appropriate PO. For example, the first UE may randomly select one or more UEs from the UEs joining the first multicast, or randomly select one or more POs from POs corresponding to the UEs joining the first multicast; for another example, among the POs corresponding to the UE having joined the first multicast, the first UE may select a PO whose position is closest to the PO corresponding to the first UE to detect, thereby enabling to reduce the detection delay.

Optionally, the first UE may know which UEs the second UE includes, and then determine the POs corresponding to the second UE.

Or alternatively, the first UE may not know which UEs the second UE includes, but simply selects the ue_id within a certain value range (e.g. 0-1023), and determines a PO different from the PO corresponding to the first UE according to the foregoing equations 1 and 2, so the first UE does not perceive the specific UE. In this case, the second UE may be an actually existing UE, and the PO determined by the first UE to be different from the PO corresponding to the first UE is a PO corresponding to the second UE; or there may be no second UE, the first UE simply determines a PO different from the PO corresponding to the first UE, and the determined PO does not correspond to the actually existing UE.

Optionally, the embodiment of the present application may further include the first UE determining the first PF and/or the first PO.

For example, this step may occur prior to S201, or concurrently with S201.

In an embodiment of the present application, "determining" may include/be replaced with: "calculation".

In one possible implementation, the first PO may be determined according to any one or more of the following:

(1) A first identification (e.g., ue_id);

(2) DRX cycle (e.g., T);

(3) The number of PFs (e.g., N) within one DRX cycle;

(4) For determining an offset (offset) of the PF (e.g., pf_offset).

The first UE determining a first PO, for example, includes: the first UE determines an index of the first PO.

In another possible implementation, the first PO may be determined according to any one or more of the following:

(1) A first identification (e.g., ue_id);

(2) DRX cycle (e.g., T);

(3) The number of PFs (e.g., N) within one DRX cycle;

(4) The number of POs (e.g., ns) within a PF;

(5) For determining an offset (offset) of the PF (e.g., pf_offset).

For example, any one or more of N, ns, pf_offset may be broadcast by the network device in system information (e.g., system information block 1 (system information block, SIB 1).

In one possible implementation, the first identity may be obtained by the first UE from the network device. For example, the first identity may be an identity of the second UE (e.g., 5G-S-TMSI), or an identity of the second UE (e.g., 5G-S-TMSI) mod constant 1. The constant 1 is 1024 or 4096 or 8192 or 32768, etc.

In another possible implementation, the first identifier may include/be any one or more of 0 to (constant 1-1). For example, the constant 1 is 1024 and the first identifier may include/be any one or more of 0 to 1023.

Alternatively, the DRX cycle may be the minimum value in the first set of DRX cycles.

The first set of DRX cycles includes any one or more of a first DRX cycle of the second UE, a second DRX cycle of the second UE, and a default DRX cycle.

In one possible scenario, the first DRX cycle of the second UE is negotiated by the second UE and the core network. Or the first DRX cycle of the second UE is core network configured/acknowledged. For example, the first DRX cycle of the second UE is a second UE specific DRX cycle.

In one possible scenario, the second DRX cycle of the second UE is transmitted by the network device to the second UE. For example, the first message sent by the network device to the second UE may include a second DRX cycle of the second UE. Wherein the first message is used to indicate/command release of the RRC connection or suspension of the RRC connection (e.g., suspension). For example, the first message may be an RRC release (RRCRELEASE) message. For example, the second DRX cycle of the second UE is a second UE specific DRX cycle.

The default DRX cycle may be broadcast by the network device. For example, the default DRX cycle is included in system information (e.g., SIB 1) sent by the network device.

Alternatively, the DRX cycle may be a default DRX cycle, or the DRX cycle may be less than the default DRX cycle.

The method for determining the first PO in the embodiment of the present application may be the same as or different from the method in the prior art (refer to the description in the prior art section), and the present application is not limited thereto.

The method for determining the first PF in the embodiment of the present application may be the same as or different from the method in the prior art (refer to the description in the prior art section), and the present application is not limited thereto.

Alternatively, the first condition may include any one or more of condition 1, condition 2, condition 3, or condition 8.

Condition 1: the first UE does not detect DCI scrambled by paging cell radio network temporary identifier (P-RNTI) at PO corresponding to the first UE.

In the embodiments of the present application, "undetected" is different from "undetected". Specifically, "undetected" refers to an action of not performing detection, and the result of "undetected" is "undetected"; "not detected" may include one or both of the following two cases, one in which the detected action is performed but not detected, and the second in which the detected action is not performed. "detect" is different from "detect" in meaning. Specifically, "detecting" refers to an action of performing detection, and the result of "detecting" may be "detected" or "not detected"; "undetected" refers to an action in which no detection is performed, and the result of "undetected" is "undetected". This is generally described herein, and will not be described in detail.

Alternatively, the P-RNTI scrambled DCI is "not detected" at the PO corresponding to the first UE, which is understood to be detected but not detected at the PO corresponding to the first UE.

Alternatively, the P-RNTI scrambled DCI may be used to schedule paging messages. Alternatively, the P-RNTI scrambled DCI may have other roles, or the P-RNTI scrambled DCI may be used for other roles, which is not particularly limited.

As an alternative embodiment, as included in the above first condition, "the first UE does not detect the DCI scrambled by the P-RNTI at the PO corresponding to the first UE" may include that the first UE does not detect the DCI scrambled by the P-RNTI at consecutive Y POs, and Y is a positive integer.

For example, Y POs are POs corresponding to the first UE.

For example, consecutive Y POs may include/be replaced with: the first UE needs to perform the detected consecutive Y POs.

Alternatively, the first UE does not detect the P-RNTI-scrambled DCI at consecutive Y POs, which may be understood as the first UE performing the detection but not the P-RNTI-scrambled DCI at consecutive Y POs.

Wherein Y is configurable by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or also configurable by the network device. The configuration mode of X and the configuration mode of Y may be the same or different. If the configuration mode of Y is the same as that of X and is configured by the network device, the network device can configure the values of X and Y through one piece of configuration information or configure the values of X and Y respectively through different pieces of configuration information. Alternatively, the value of Y may relate to the number of times the network device transmits the multicast activation notification (or the number of times the multicast activation notification is transmitted). For example, the network device may send a multicast activation notification twice, then Y may be equal to 2.

It can be appreciated that if the first UE does not detect the P-RNTI scrambled DCI at consecutive Y POs, then consider a situation where there may be a detection failure or missed detection. In this case, therefore, the first UE may detect a PO different from a PO corresponding to the first UE to reduce the probability of DCI detection failure or omission. For example, referring to fig. 3A, the 1 st PO, the 5 th PO, and the 9 th PO from left to right are POs corresponding to the first UE, 3 POs between the 1 st PO and the 5 th PO are POs different from the POs corresponding to the first UE, and there are POs different from the POs corresponding to the first UE between the 5 th PO and the 9 th PO. For example, a PO that is different from a PO corresponding to the first UE corresponds to a second UE, which may include one UE or a plurality of UEs. For example, y=2, the first UE detects the P-RNTI scrambled DCI at both the 1 st and 5 th POs in fig. 3A, then the first UE may detect a PO that is different from the PO corresponding to the first UE after the 5 th PO, e.g., the first UE may detect one or more of the 6 th to 8 th POs in fig. 2.

As another optional implementation manner, as included in the above first condition, the "the first UE does not detect the P-RNTI-scrambled DCI at the PO corresponding to the first UE" may include that the duration of the first UE does not detect the P-RNTI-scrambled DCI at the PO corresponding to the first UE reaches the second duration.

Wherein the second duration may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device. The configuration mode of X and the configuration mode of the second duration may be the same or different. If the configuration mode of the second duration is the same as that of the X and both the second duration and the first duration are configured by the network device, the network device may configure the X and the second duration by using one piece of configuration information, or may configure the X and the second duration by using different configuration information, respectively. Alternatively, the second duration may relate to a duration that the network device transmits the multicast activation notification (or, in other words, a transmission duration of the multicast activation notification). For example, the network device may send a multicast activation notification within 10 milliseconds (one or more multicast activation notifications may be sent within 10 milliseconds), then the second time period may be equal to 10 milliseconds.

Reference is made to fig. 3B, which is a schematic illustration of a second duration. For example, the first UE may maintain a timer (referred to as timer a), and if the timer a is not running, the first UE may start the timer a if the first UE does not detect the P-RNTI-scrambled DCI at the PO corresponding to the first UE or the first UE does not detect the P-RNTI-scrambled DCI (e.g., time T1 in fig. 3B), and the timer a has a second duration. In the running process of the timer A, if the first UE detects the DCI scrambled by the P-RNTI at the PO corresponding to the first UE or the first UE detects the DCI scrambled by the P-RNTI (for example, the first UE detects the DCI scrambled by the P-RNTI at the time T2), the timer A is stopped, and at the moment, the condition 1 included in the first condition can not be considered to be satisfied; and before the timer a times out, if the first UE does not detect the DCI scrambled by the P-RNTI at the PO corresponding to the first UE, the timer a times out (for example, the timer a times out at time T3), where the condition 1 included in the first condition is considered to be satisfied.

Optionally, the first UE may further include: timer a times out.

For example, the first UE may start timer a if any one or more of the following are satisfied:

(1) Timer a is not running;

(2) The first UE does not detect the DCI scrambled by the P-RNTI in the PO corresponding to the first UE or the first UE does not detect the DCI scrambled by the P-RNTI.

For example, the first UE may stop timer a if the first UE detects P-RNTI scrambled DCI at a PO corresponding to the first UE or the first UE detects P-RNTI scrambled DCI.

It may be appreciated that if the first UE does not detect the P-RNTI scrambled DCI on one PO corresponding to the first UE, this may be the case when the network device has transmitted the P-RNTI scrambled DCI but the first UE does not detect it, or may be the case when the network device has not transmitted the P-RNTI scrambled DCI so the first UE does not detect it. If the first UE detects the first PO without detecting the P-RNTI-scrambled DCI on one PO corresponding to the first UE, the first UE may need to detect the first PO in a large amount, and these detections may increase power consumption of the UE; and some of these detections may be meaningless, for example, in the case where the network device is not transmitting the P-RNTI scrambled DCI. In order to reduce the meaningless detection procedure of the first UE for the first PO, the first UE may re-detect the first PO if Y consecutive POs perform detection but no P-RNTI-scrambled DCI is detected, or the first UE may re-detect the first PO if the duration of the non-P-RNTI-scrambled DCI reaches the second duration; thereby minimizing/reducing the probability that the first UE always listens to a PO different from the PO corresponding to the first UE, power consumption of the first UE can also be reduced.

Condition 2: the first UE moves to the target cell.

For example, the target cell may be replaced with cell 1.

For example, "move to" may include/be replaced with: select, or retransmit, or select, or retransmit.

For example, when the first UE is in a mobile state, e.g., the first UE in an RRC non-connected state may determine that the target cell through a procedure such as cell reselection or cell selection, the first UE moves to the target cell, and may detect the first PO or may detect the first PO of the target cell or may detect the first PO in the target cell, to determine or quickly determine whether the network device has sent a multicast activation notification.

Optionally, the "first UE moves to the target cell" as condition 2 may also include or be replaced with any one or more of the following: the first UE receives a system message (e.g., system information block 1 (system information block, SIB 1) and/or master information block (master information block, MIB) of the target cell, etc.), the first UE camps on the target cell, the first UE determines to camp on the target cell, and the first UE performs cell reselection.

In embodiments of the present application, "receiving" may include or be replaced with: acquired, or acquired.

As an alternative embodiment, the condition 2 may further include that a time interval between the first time and the PO corresponding to the first UE is greater than or equal to a first threshold. That is, condition 2 may include the first UE moving to the target cell (or the condition may include or be replaced with other conditions described above), and the time interval between the first time and the PO corresponding to the first UE is greater than or equal to the first threshold.

For example, the first time may be a point in time, which may be referred to as a first time; or the first time may be a duration, e.g., the first time includes one or more time slots or includes one or more subframes, etc.

For example, the time interval between the first time and the PO corresponding to the first UE may be a time interval between the first time and the nearest one of the POs corresponding to the first UE, or a time interval between the first time and any one of the POs of the first UE.

For example, the first time may be determined by the first UE. For example, the first time is associated with a time when the first UE moves to the target cell. Alternatively, for example, one association is that the first time is the time when the first UE moves to the target cell; or alternatively, the first time is any time after the first UE moves to the target cell. For example, when the time for the first UE to move to the target cell is T1, the first time may be t1+ duration a, and the duration a may be greater than or equal to 0. Wherein, if the duration A is equal to 0, the first time is the time when the first UE moves to the target cell; if the duration A is greater than 0, the first time is indicated as the time after the first UE moves to the target cell. The duration a may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device.

For example, the first threshold may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device. The first threshold, X, Y, and the second duration may be configured in the same or different manners. For example, if the four configurations are the same and are both configured by the network device, the network device may configure the values of X and Y and the first threshold and the second duration through one piece of configuration information, or configure the values of X and Y and the first threshold and the second duration respectively through different pieces of configuration information, and so on.

It is appreciated that if the time interval between the first time and the PO corresponding to the first UE is greater than or equal to the first threshold, it is indicated that there is a period of time from the first UE detecting the PO corresponding to the first UE, between which the network device may have sent a multicast activation notification. Therefore, in order to reduce the time delay of the first UE receiving the multicast activation notification or in order to avoid the first UE missing the multicast activation notification, the first UE may detect the PO different from the PO corresponding to the first UE before detecting the PO corresponding to the first UE, so that the time delay of the first UE receiving the multicast activation notification or the first UE missing the multicast activation notification or the probability of the UE missing the multicast activation notification may be reduced, and the reliability of the UE receiving the multicast service is further improved or the delay of the UE receiving the multicast service is reduced.

For example, if "the first UE moves to the target cell" as condition 2 may include or be replaced with "the first UE receives the system message of the target cell", the first time may be associated with a time when the first UE receives the system message of the target cell. For example, one way of associating is that the first UE receives the system message of the target cell, or another way of associating is that the first UE receives the system message of the target cell at any time after. For example, when the first UE receives the system message of the target cell for T2, the first time may be t2+ duration B, and the duration B may be greater than or equal to 0. Wherein, if the duration B is equal to 0, the first time is indicated as the time when the first UE receives the system message of the target cell; if the duration B is greater than 0, the first time is indicated as the time after the first UE receives the system message of the target cell. The duration B may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device.

For another example, if "the first UE moves to the target cell" as condition 2 may include or be replaced with "the first UE camps on the target cell", the first time may be associated with a time when the first UE camps on the target cell. For example, one way of associating is that the first UE is camping on the target cell, or another way of associating is that the first UE is camping on the target cell at any time after camping on the target cell. For example, if the first UE camps on the target cell for a time T3, the first time may be t3+ duration C, and the duration C may be greater than or equal to 0. Wherein if the duration C is equal to 0, the first time is indicated as the time when the first UE camps on the target cell; if the duration C is greater than 0, the first time is indicated as the time after the first UE resides in the target cell. The duration C may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device.

For another example, if "the first UE moves to the target cell" as condition 2 may include or be replaced with "the first UE determines to camp on the target cell", the first time may be associated with a time when the first UE determines to camp on the target cell. For example, one way of associating is that the first UE determines to camp on the target cell, or another way of associating is that the first UE determines to camp on the target cell at any time after. For example, if the first UE determines that the time of camping on the target cell is T4, the first time may be t4+ duration D, and the duration D may be greater than or equal to 0. Wherein if the duration D is equal to 0, the first time is the time when the first UE determines to camp on the target cell; if the duration D is greater than 0, it indicates that the first time is the time after the first UE determines to camp on the target cell. The duration D may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device. Alternatively, the first UE may determine that the time to camp on the target cell may be earlier than the time the first UE camps on the target cell, e.g., T4 is earlier than T3; or the time when the first UE determines to camp on the target cell may also be the time when the first UE camps on the target cell, e.g. T4 and T3 are the same time.

As another example, if "the first UE moves to the target cell" as condition 2 may include or be replaced with "after the first UE performs cell reselection", the first time may be associated with a time when the first UE performs cell reselection. For example, one association may be that the first time is the time when the cell reselection is completed by the first UE, or another association may be that the first time is any time after the cell reselection is completed by the first UE. For example, when the time for completing cell reselection by the first UE is T5, the first time may be t5+ duration F, and the duration F may be greater than or equal to 0. If the duration F is equal to 0, the first time is the time when the cell reselection of the first UE is completed; if the duration F is greater than 0, the first time is indicated as the time after the cell reselection of the first UE is completed. The duration F may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device.

Condition 3: before the first UE leaves the source cell.

For example, the source cell may be replaced with cell 2, or the serving cell.

For example, the first UE may control cell selection or reselection by a timer B (e.g., any one or more of start, restart, stop, timeout). For example, the timer B times out, which may be considered that the first UE leaves the source cell or the first UE moves to the target cell.

For example, the time that the timer B times out is the third time.

For example, the first UE is expected to leave the source cell at a third time or the first UE is expected to move to the target cell at a third time.

For example, "intended" may include or be replaced with: and (5) estimating.

For example, if the signal quality of the source cell satisfies the condition a and/or the signal quality of the target cell satisfies the condition B, the first UE starts the timer B.

For example, the signal quality of the source cell may include any one or more of the following: a cell selection reception level value (e.g., cell selection RX level value) of the source cell; or, a cell selection quality value (e.g., cell selection quality value) of the source cell.

For example, the signal quality of the target cell may include any one or more of the following: a cell selection reception level value (e.g., cell selection RX level value) of the target cell; or, a cell selection quality value (e.g., cell selection quality value) of the target cell.

For example, condition a includes: the signal quality of the source cell is less than (or less than or equal to) the threshold a.

For example, condition B includes: the signal quality of the target cell is greater than (or, greater than or equal to) the threshold B.

For example, if the signal quality of the source cell no longer satisfies the condition a and/or the signal quality of the target cell no longer satisfies the condition B, the first UE stops the timer B.

For example, the timer B timeout can be understood as:

(1) The time length of the signal quality of the source cell meeting the condition A reaches the time length corresponding to the timer B, and/or the time length of the signal quality of the target cell meeting the condition B reaches the time length corresponding to the timer B; or (2) the signal quality of the source cell satisfies the condition a in the duration corresponding to the timer B, and/or the signal quality of the target cell satisfies the condition B in the duration corresponding to the timer B.

For example, the duration corresponding to timer B may include or be replaced with: time interval 1.

Alternatively, the "before the first UE leaves the source cell" as condition 3 may also include or be replaced with "before the timer B expires", or before the third time.

For example, in a mobile state, the first UE may determine that the target cell through a procedure such as cell reselection or cell selection, and the first UE may detect the first PO or may detect the first PO of the source cell or may detect the first PO in the source cell before leaving the source cell, so as to determine or quickly determine whether the network device has sent the multicast activation notification.

Optionally, condition 3 may further include further content.

As an alternative embodiment, the condition 3 may further include that the second time is located after the last PO corresponding to the source cell by the first UE; or, after a fourth time; or, the first UE is after the last PO corresponding to the source cell. That is, condition 3 may include that the first UE leaves the source cell before and the second time is after the last PO corresponding to the source cell by the first UE; or, before the first UE leaves the source cell, and after a fourth time; or before the first UE leaves the source cell and after the last PO corresponding to the source cell.

For example, the second time may be understood as the current time.

For example, the fourth time is located after the last PO corresponding to the source cell for the first UE. For example, the first UE determines, according to the estimated third time, a last PO corresponding to the first UE in the source cell. For example, the second time or the fourth time may be a point in time, and may be referred to as a second time or a fourth time; or the second time or fourth time may be a duration, e.g. the second time or fourth time comprises one or more time slots or comprises one or more subframes, etc.

For example, the second time or the fourth time may be associated with a time when the first UE leaves the source cell. Alternatively, for example, one association may be that the second time or the fourth time is any time before the first UE leaves the source cell (or the second time or the fourth time is any time before the timer B expires). For example, if the first UE leaves the source cell for a time T6, the second time or the fourth time may be a T6-duration G, which may be greater than 0. Wherein the first time is indicated as a time before the first UE leaves the source cell. The duration G may be configured by the first UE itself, or at the factory of the first UE, or predefined by a protocol, or may also be configured by the network device.

The time length A to the time length G can be equal to each other; or may not be equal; or a part of the time periods may be equal (for example, the time period a is equal to the time period B, and the other three time periods are not equal), and the present invention is not limited.

It can be understood that, since the second time or the fourth time is after the last PO corresponding to the source cell by the first UE, the first UE will not detect the PO corresponding to the first UE in the source cell but will detect the PO corresponding to the first UE after moving to the target cell after the second time or the fourth time or the last PO corresponding to the source cell by the first UE. In this case, the first UE may miss the multicast activation notification, or the delay of receiving the multicast activation notification by the first UE may be relatively large. Therefore, in order to reduce the time delay of the first UE receiving the multicast activation notification or to avoid the first UE missing the multicast activation notification, the first UE may detect the first PO in the source cell, so that not only the time delay of the first UE receiving the multicast activation notification may be reduced or the first UE missing the multicast activation notification may be avoided, or the probability that the UE misses the multicast activation notification may be reduced, but also the reliability of the UE receiving the multicast service may be further improved or the delay of the UE receiving the multicast service may be reduced.

As another alternative embodiment, the condition 3 may further include that a time interval between the second time and a time (e.g., a third time) at which the first UE leaves the source cell is less than or equal to a second threshold; or, after a fifth time; or, after the timer C times out. That is, condition 3 may include that before the first UE leaves the source cell, and a time interval between the second time and a time when the first UE leaves the source cell is less than or equal to a second threshold; or, before the first UE leaves the source cell, and after a fifth time; or, before the first UE leaves the source cell and after the timer C expires.

For example, a time interval between the fifth time and a time when the first UE leaves the source cell (e.g., a third time) is less than or equal to the second threshold.

For example, if the signal quality of the source cell satisfies the condition a and/or the signal quality of the target cell satisfies the condition B, the first UE starts the timer C.

For example, if the signal quality of the source cell no longer satisfies the condition a and/or the signal quality of the target cell no longer satisfies the condition B, the first UE stops the timer C.

For example, the timer C timeout can be understood as:

(1) The time length of the signal quality of the source cell meeting the condition A reaches the time length corresponding to the timer C, and/or the time length of the signal quality of the target cell meeting the condition B reaches the time length corresponding to the timer C; or (2) the signal quality of the source cell satisfies the condition a in the duration corresponding to the timer C, and/or the signal quality of the target cell satisfies the condition B in the duration corresponding to the timer C.

For example, the duration corresponding to timer C may include or be replaced with: time interval 2.

Alternatively, timer C may be started simultaneously with timer B.

For example, the duration corresponding to timer B is longer than the duration corresponding to timer C. For example, the duration corresponding to timer C plus the second threshold is equal to the duration corresponding to timer B.

The first threshold, the second threshold, X, Y, the second duration, and the fourth duration may be configured in the same or different manners. If the configuration modes of the network devices are the same and are all configured by the network device, the network device can configure the network devices by one piece of configuration information, or configure the network devices by different pieces of configuration information, or configure the network devices by two or more pieces of configuration information. Reference is additionally made to the foregoing for an introduction to the second time.

It may be understood that after the fifth time or the timer C expires, the first UE may not detect the PO corresponding to the first UE any more in the source cell, but may detect the PO corresponding to the first UE after moving to the target cell. In this case, the first UE may miss the multicast activation notification, or the delay of receiving the multicast activation notification by the first UE may be relatively large. Therefore, in order to reduce the time delay of the first UE receiving the multicast activation notification or to avoid the first UE missing the multicast activation notification, the first UE may detect the first PO in the source cell, so that not only the time delay of the first UE receiving the multicast activation notification may be reduced or the first UE missing the multicast activation notification may be avoided, or the probability that the UE misses the multicast activation notification may be reduced, but also the reliability of the UE receiving the multicast service may be further improved or the delay of the UE receiving the multicast service may be reduced.

Alternatively, condition 3 may include the following (1) and (2) and (3).

(1) Before the first UE leaves the source cell.

(2) The second time is located after the last PO corresponding to the source cell by the first UE; or, after a fourth time; or, the first UE is after the last PO corresponding to the source cell.

(3) The time interval between the second time and the time the first UE leaves the source cell (e.g., a third time) is less than or equal to a second threshold; or, after a fifth time; or, after the timer C times out.

Alternatively, in embodiments in which the time interval between the second time and the time the first UE leaves the source cell is less than or equal to the second threshold, the second time may be located after the last PO of the first UE in the source cell. For example, when the first UE cannot detect the PO corresponding to the first UE, it may be determined whether to detect a PO different from the PO corresponding to the first UE, so that the number of POs detected by the first UE may be reduced, and power consumption of the first UE may be saved.

Condition 8: after the timer C times out.

For example, the expiration of timer C may be included or replaced with: the time length of the signal quality of the source cell meeting the condition A reaches the time length corresponding to the timer C, and/or the time length of the signal quality of the target cell meeting the condition B reaches the time length corresponding to the timer C.

For example, the target cell may include or be replaced with: neighbor cell, or cell 1, or other cells.

Optionally, condition 8 may further include: timer B is running or timer B (e.g., timer B started simultaneously with timer C) is not stopped.

For example, condition 8 may include: after the timer C times out, and the timer B is running; or, after timer C times out, and timer B (e.g., timer B started simultaneously with timer C) does not stop; or, after timer C times out, and timer B (e.g., timer B started simultaneously with timer C) has not stopped.

For example, "timer B is running, or timer B (e.g., timer B started simultaneously with timer C) is not stopped", states: the signal quality of the source cell still satisfies the condition a and/or the signal quality of the target cell still satisfies the condition B.

It is understood that after condition 8 is met, the first UE may select or reselect to the target cell. In this case, the first UE may miss the multicast activation notification, or the delay of receiving the multicast activation notification by the first UE may be relatively large. Therefore, in order to reduce the time delay of the first UE receiving the multicast activation notification or to avoid the first UE missing the multicast activation notification, the first UE may detect the first PO in the source cell, so that not only the time delay of the first UE receiving the multicast activation notification may be reduced or the first UE missing the multicast activation notification may be avoided, or the probability that the UE misses the multicast activation notification may be reduced, but also the reliability of the UE receiving the multicast service may be further improved or the delay of the UE receiving the multicast service may be reduced.

In addition to the above embodiments, the first condition or the sub-condition (e.g., condition 1, condition 2, condition 3, or condition 8) included in the first condition may have other embodiments, and is not particularly limited.

In the embodiment of the application, if the first condition is met, the first UE detects the DCI scrambled by the P-RNTI in the first PO, so that the range of the first UE for detecting the DCI scrambled by the P-RNTI is enlarged, the success rate of the first UE for detecting the DCI scrambled by the P-RNTI is improved, the probability of the UE obtaining the multicast activation notification is also increased, the UE is facilitated to receive the multicast, and the service reliability is improved.

Optionally, the method may further include S202, if the second condition is satisfied, the first UE stops detecting a PO different from a PO corresponding to the first UE.

In the embodiment of the present application, "stop detection" may include or be replaced with: no longer detected.

Alternatively, the second condition may comprise any one or more of condition 4, condition 5, condition 6 or condition 7.

Condition 4: the first UE detects the P-RNTI scrambled DCI at the first PO. Optionally, the condition 4 may further include that the first UE does not detect the multicast activation notification at the first PO.

For example, the first UE detects the P-RNTI scrambled DCI, e.g., referred to as the first DCI, at any one or more or all of the first POs. If the first DCI indicates that there is a paging message or the first DCI schedules the paging message, the first UE may receive the paging message according to the first DCI, and the first UE may determine that there is or does not exist a multicast activation notification of the first multicast based on information in the paging message, and optionally, the first UE may determine that there is not exist a multicast activation notification of the first multicast based on information in the paging message; or if the first DCI indicates that there is no paging message or the first DCI does not schedule the paging message, the first UE may determine that there is no multicast activation notification for the first multicast. In this case, the first UE may stop detecting a PO different from a PO corresponding to the first UE.

Optionally, "the first UE detects the P-RNTI scrambled DCI at the first PO" may include: the first UE detects the P-RNTI scrambled DCI at any one or more (e.g., Z) or all (e.g., X) of the first POs.

Optionally, "the first UE does not detect the multicast activation notification at the first PO" may include: the first UE does not detect the multicast activation notification at any one or more (e.g., Z) or all (e.g., X) of the first POs.

Condition 5: the first UE detects the DCI scrambled by the P-RNTI at the PO corresponding to the first UE.

For example, the first UE detects the P-RNTI scrambled DCI, e.g., referred to as the second DCI, at the PO corresponding to the first UE. If the second DCI indicates that there is a paging message or the second DCI schedules the paging message, the first UE may receive the paging message according to the second DCI, and the first UE may determine, based on information in the paging message, that there is or is not a multicast activation notification of the first multicast; or, if the second DCI indicates that there is no paging message or the second DCI does not schedule the paging message, the first UE may determine that there is no multicast activation notification of the first multicast. In the case that the first UE detects the P-RNTI-scrambled DCI at the PO corresponding to the first UE, the first UE may stop detecting a PO different from the PO corresponding to the first UE.

Condition 6: the first UE does not detect the P-RNTI scrambled DCI at the first PO.

If some or all of the first UEs in the first PO do not detect the P-RNTI-scrambled DCI, which indicates that the network device may not transmit the P-RNTI-scrambled DCI and thus may not transmit the paging message, the first UE may stop detecting a PO different from the PO corresponding to the first UE in this case, so as to reduce power consumption for detecting the paging DCI.

For example, the first PO includes X POs, and reference is made to the foregoing for description of the X POs. Optionally, the first UE does not detect the P-RNTI-scrambled DCI at the first PO, which may include that the first UE does not detect the P-RNTI-scrambled DCI at X POs included in the first PO; or it is understood that the first UE considers that condition 6 is satisfied if the P-RNTI-scrambled DCI is not detected at X POs included in the first PO.

Condition 7: the PO corresponding to the first UE arrives.

The first UE may detect the PO corresponding to the first UE when/before/after the PO corresponding to the first UE arrives. Therefore, the first UE may stop detecting a PO different from the PO corresponding to the first UE and detect the PO corresponding to the first UE when/before/after the PO corresponding to the first UE arrives, thereby enabling to reduce power consumption of the first UE.

And when the second condition is met, the first UE stops detecting the PO which is different from the PO corresponding to the first UE, so that the first UE can be prevented from conducting nonsensical paging DCI monitoring, and the UE power can be reduced.

Step S202 may also be implemented as a separate embodiment, and is independent of step S201.

Alternatively, the first UE detects a PO different from a PO corresponding to the first UE, which may be regarded as a function of the first UE, or as a mode of the first UE, for example, referred to as a first function, which may be a function of detecting a PO different from a PO corresponding to the first UE.

The first function may be turned on (or enabled) or off by the first UE at the discretion of the first UE, e.g., the first UE may control the turning on or off of the first function by way of a switch or status bit, etc. Or the turning on or off of the first function may also be indicated by the network device, e.g., the network device may send indication information to indicate that the function is turned on (or enabled) or the first function is turned off (e.g., the indication information may indicate that the detection of a PO that is different from the PO corresponding to the first UE is turned on, or that the detection of a PO that is different from the PO corresponding to the first UE is allowed to be detected, or that the detection of a PO that is different from the PO corresponding to the first UE is not allowed to be detected), which may be broadcast (e.g., sent by a system message) or unicast (e.g., sent by a proprietary signaling). The UE with the first function turned on can execute the scheme provided by the embodiment of the present application, and the UE without the first function or the UE with the first function turned off cannot detect the PO different from the PO corresponding to the first UE. By controlling the turning on or off of the first function, implementation flexibility is improved, e.g. the UE may turn on the first function when there is a need (e.g. may turn on the first function when the UE performs cell reselection or selection) to improve the detection success rate. In other scenarios, for example, in a scenario with better communication quality, the UE has a lower probability of missing DCI, and the first function may be turned off, so that power consumption of the UE may be saved.

In the embodiment of the application, the first UE can detect paging DCI at a PO different from a PO corresponding to the first UE, that is, in the embodiment of the application, the first UE can detect a PO different from a PO corresponding to the first UE, so that the range of the PO which can be detected by the first UE is enlarged. Even if the first UE fails to detect or fails to detect the paging DCI at the PO corresponding to the first UE, the first UE may also successfully detect the paging DCI at a PO different from the PO corresponding to the first UE, thereby improving the success rate of receiving the P-RNTI scrambled DCI by the UE, avoiding the UE from missing the multicast activation notification, or reducing the probability of the UE missing the multicast activation notification, and further improving the reliability of receiving the multicast service by the UE; or the delay of receiving the multicast activation notification by the UE is reduced, so that the delay of receiving the multicast service by the UE is reduced.

The sequence of steps in the embodiment of the application is not limited.

The sequence of the judgment of the different conditions in the embodiment of the application is not limited.

The "front", "rear", "time", etc. in the embodiments of the present application do not strictly limit the time points.

Fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus 400 may be the first UE or the circuitry of the first UE according to the embodiment shown in fig. 2, for implementing the method corresponding to the first UE in the above method embodiment. Or the communication apparatus 400 may be a network device or circuitry of the network device according to the embodiment shown in fig. 2, for implementing a method corresponding to the network device in the above method embodiment. Specific functions can be seen from the description of the method embodiments described above. One type of circuitry is, for example, a chip system.

The communication device 400 comprises at least one processor 401. The processor 401 may be used for internal processing of the device to implement a certain control processing function. Optionally, the processor 401 includes instructions. Alternatively, the processor 401 may store data. Alternatively, the different processors may be separate devices, may be located in different physical locations, and may be located on different integrated circuits. Alternatively, the different processors may be integrated in one or more processors, e.g., integrated on one or more integrated circuits.

Optionally, the communication device 400 includes one or more memories 403 to store instructions. Optionally, the memory 403 may also store data. The processor and the memory may be provided separately or may be integrated.

Optionally, the communication device 400 includes a communication line 402, and at least one communication interface 404. In fig. 4, the memory 403, the communication line 402, and the communication interface 404 are all optional, and are indicated by dashed lines.

Optionally, the communication device 400 may also include a transceiver and/or an antenna. Wherein the transceiver may be used to transmit information to or receive information from other devices. The transceiver may be referred to as a transceiver, a transceiver circuit, an input-output interface, etc. for implementing the transceiver function of the communication device 400 via an antenna. Optionally, the transceiver comprises a transmitter (transmitter) and a receiver (receiver). Illustratively, a transmitter may be used to generate a radio frequency (radio frequency) signal from the baseband signal, and a receiver may be used to convert the radio frequency signal to the baseband signal.

Processor 401 may include a general purpose central processing unit (central processing unit, CPU), microprocessor, application SPECIFIC INTEGRATED Circuit (ASIC), or one or more integrated circuits for controlling the execution of programs in accordance with aspects of the present application.

Communication line 402 may include a pathway to transfer information between the aforementioned components.

Communication interface 404, using any transceiver-like means for communicating with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), wired access network, etc.

The memory 403 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disc storage, a compact disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 403 may be stand alone and be connected to the processor 401 by a communication line 402. Or memory 403 may be integrated with processor 401.

The memory 403 is used for storing computer-executable instructions for executing the present application, and is controlled by the processor 401. The processor 401 is configured to execute computer-executable instructions stored in the memory 403, thereby implementing the communication method provided by the above-described embodiment of the present application.

Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not particularly limited in the embodiments of the present application.

In a particular implementation, processor 401 may include one or more CPUs, such as CPU0 and CPU1 of FIG. 4, as an embodiment.

In a particular implementation, as one embodiment, the communication apparatus 400 may include a plurality of processors, such as the processor 401 and the processor 405 in fig. 4. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

When the apparatus shown in fig. 4 is a chip, for example a chip of a network device, or a chip of a first UE, the chip includes a processor 401 (may also include a processor 405), a communication line 402, a memory 403, and a communication interface 404. In particular, the communication interface 404 may be an input interface, a pin, or a circuit, etc. Memory 403 may be a register, cache, or the like. Processor 401 and processor 405 may be a general purpose CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of the programs of the communication methods of any of the embodiments described above.

The embodiment of the application can divide the functional modules of the device according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. For example, in the case of dividing the respective functional modules by the respective functions, fig. 5 shows a schematic diagram of an apparatus, and the apparatus 500 may be a network device or a first UE, or a chip in the network device or a chip in the first UE, which are involved in the respective method embodiments described above. The apparatus 500 comprises a transmitting unit 501, a processing unit 502 and a receiving unit 503.

It should be understood that the apparatus 500 may be used to implement the steps performed by the network device or the first UE in the method according to the embodiments of the present application, and the relevant features may refer to the foregoing embodiments, which are not described herein.

Alternatively, the functions/implementation procedures of the transmitting unit 501, the receiving unit 503, and the processing unit 502 in fig. 5 may be implemented by the processor 401 in fig. 4 calling computer-executable instructions stored in the memory 403. Or the functions/implementation of the processing unit 502 in fig. 5 may be implemented by the processor 401 in fig. 4 invoking computer executable instructions stored in the memory 403, and the functions/implementation of the transmitting unit 501 and the receiving unit 503 in fig. 5 may be implemented by the communication interface 404 in fig. 4.

Alternatively, when the apparatus 500 is a chip or a circuit, the functions/implementation procedures of the transmitting unit 501 and the receiving unit 503 may also be implemented by pins or circuits, or the like.

The present application also provides a computer readable storage medium storing a computer program or instructions which, when executed, implement the method performed by the network device or the first UE in the foregoing method embodiments. Thus, the functions described in the above embodiments may be implemented in the form of software functional units and sold or used as independent products. Based on such understanding, the technical solution of the present application may be embodied in essence or contributing part or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. The storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The present application also provides a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method performed by the network device or the first UE in any of the method embodiments described above.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform a method performed by the network device or the first UE involved in any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). 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, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Drive (SSD)), etc.

The various illustrative logical blocks and circuits described in connection with the embodiments of the present application may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the general purpose processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software unit executed by a processor, or in a combination of the two. The software elements may be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In an example, a storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may reside in a terminal device. In the alternative, the processor and the storage medium may reside in different components in a terminal device.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Although the embodiments of the present application have been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations thereof can be made without departing from the scope of the embodiments of the application. Accordingly, the present embodiments and figures are merely exemplary illustrations of embodiments of the application defined by the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents of the embodiments that fall within the scope of the embodiments of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the scope of the embodiments of the application. Thus, the embodiments of the present application are intended to include such modifications and alterations insofar as they come within the scope of the embodiments of the application as claimed and the equivalents thereof.

Claims (17)

1. A method of communication, the method comprising:

if a first condition is met, the first terminal equipment detects a first paging occasion PO, wherein the first PO is different from the PO corresponding to the first terminal equipment;

wherein the first condition includes any one of:

the first terminal equipment does not detect the DCI scrambled by the P-RNTI at the PO corresponding to the first terminal equipment;

the first terminal equipment moves to a target cell; or alternatively, the first and second heat exchangers may be,

Before the first terminal equipment leaves the source cell.

2. The method of claim 1, wherein the first terminal device does not detect the P-RNTI-scrambled DCI at the PO corresponding to the first terminal device, comprising:

The first terminal equipment does not detect the DCI scrambled by the P-RNTI in Y continuous POs, wherein the Y POs are POs corresponding to the first terminal equipment, and Y is a positive integer; or alternatively, the first and second heat exchangers may be,

And the first terminal equipment reaches a second duration when the PO corresponding to the first terminal equipment does not detect the DCI scrambled by the P-RNTI.

3. The method of claim 2, wherein the step of determining the position of the substrate comprises,

The value of Y is related to the number of times of sending the multicast activation notification; or alternatively, the first and second heat exchangers may be,

The value of the second duration is related to the duration of the multicast activation notification transmission.

4. A method according to any one of claim 1 to 3, wherein,

The first terminal device moving to a target cell includes: the first terminal equipment moves to the target cell, and the time interval between the first time and the PO corresponding to the first terminal equipment is larger than or equal to a first threshold value;

Wherein the first time is associated with a time at which the first terminal device moves to the target cell.

5. The method according to any one of claims 1 to 4, further comprising:

Before the first terminal device leaves the source cell, the method includes:

Before the first terminal equipment leaves the source cell, and the second time is positioned after the last PO corresponding to the source cell by the first terminal equipment; or alternatively, the first and second heat exchangers may be,

Before the first terminal device leaves the source cell, and a time interval between a second time and a time when the first terminal device leaves the source cell is less than or equal to a second threshold;

wherein the second time is associated with a time when the first terminal device leaves the source cell.

6. The method according to any one of claims 1 to 5, further comprising:

If the second condition is met, the first terminal equipment stops detecting the PO which is different from the PO corresponding to the first terminal equipment;

wherein the second condition comprises any one of:

the first terminal equipment detects DCI scrambled by the P-RNTI in the first PO; or alternatively, the first and second heat exchangers may be,

The first terminal equipment detects DCI scrambled by the P-RNTI at PO corresponding to the first terminal equipment;

The first terminal equipment does not detect the DCI scrambled by the P-RNTI in the first PO; or alternatively, the first and second heat exchangers may be,

And the PO corresponding to the first terminal equipment arrives.

7. The method of claim 6, wherein the first PO comprises consecutive X POs, X being an integer greater than 1; the first terminal device does not detect the DCI scrambled by the P-RNTI at the first PO, including:

And the first terminal equipment does not detect the DCI scrambled by the P-RNTI at the X POs.

8. The method according to any one of claims 1 to 7, further comprising:

the first terminal device receives configuration information from the network device, the configuration information being used to configure one or more of Y, X, the second duration, the first threshold, or the second threshold.

9. The method according to any of claims 1-8, wherein the first terminal device joins a first multicast, wherein the first multicast is deactivated.

10. The method according to any of claims 1-9, wherein the first terminal device is in an RRC non-connected state and/or wherein the first terminal device supports receiving multicast in an RRC non-active state.

11. The method according to any one of claims 1 to 10, further comprising:

And receiving indication information from the network equipment, wherein the indication information is used for indicating to start or allow to detect the PO which is different from the PO corresponding to the first terminal equipment.

12. A method of communication, the method comprising:

The network device sends indication information, wherein the indication information is used for indicating to start or allowing to detect the PO which is different from the PO corresponding to the first terminal device.

13. The method according to claim 12, wherein the method further comprises:

The network device sends configuration information, wherein the configuration information is used for configuring one or more of a first threshold value, a second duration, X or Y, and the one or more of the first threshold value, the second duration or Y are used for the first terminal device to determine whether to detect a PO different from a PO corresponding to the first terminal device; and X is used for the first terminal equipment to determine whether to stop detecting the PO which is different from the PO corresponding to the first terminal equipment.

14. A communication device comprising a processor and a memory, the memory and the processor being coupled, the processor being configured to perform the method of any of claims 1-11 or to perform the method of any of claims 12-13.

15. A computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 11 or causes the computer to perform the method of any one of claims 12 to 13.

16. A chip system, the chip system comprising:

a processor and an interface from which the processor invokes and executes instructions, which when executed by the processor, implement the method of any one of claims 1 to 11, or implement the method of any one of claims 12 to 13.

17. A computer program product, characterized in that the computer program product comprises a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 11 or causes the computer to perform the method of any one of claims 12 to 13.