WO2023010363A1 - Signal transceiving method and device, and communications system - Google Patents

Abstract

An embodiment of the present application provides a signal transceiving device and method, and a communications system. The signal transceiving device is applied to a first terminal device and comprises a first transceiving unit. The first transceiving unit is configured to: monitor a first paging occasion and receive a first paging message sent by a network device; and send a second paging message and/or control information related to the second paging message to a second terminal device (remote UE) at a second paging occasion, where the second paging occasion is after the first paging occasion in a time domain.

Description

Method, device and communication system for sending and receiving signals technical field

The embodiment of the present application relates to the technical field of communications.

Background technique

On the Uu interface, the network device (for example, gNB) sends a paging message to the terminal device (for example, UE). The paging message can include paging of mobile called data initiated by the 5G core network (5GC) and RAN paging initiated by the radio access network (RAN), paging radio resource control idle (RRC_IDLE) status and radio resource control deactivation (RRC_INACTIVE ) state of the terminal equipment. FIG. 1 is a schematic diagram of a network device (for example, Network) sending paging to a terminal device (for example, UE) through a Uu interface.

In sidelink relay (SL relay), there is a scenario of UE-to-Network relay (UE-to-Network relay) from terminal equipment to network equipment. In this scenario, a relay terminal (for example, relay UE) can be A relay is performed between a remote terminal (for example, a remote UE) and a network device.

Figure 2 is a schematic diagram of UE-to-Network relay.

As shown in (A) of Figure 2, the remote terminal (for example, remote UE) 103 is located outside the coverage of the network device 101 (out of coverage, OOC), and the relay terminal (for example, relay UE) 102 is located in the network device 101 coverage (in coverage, IC).

As shown in (B) of Figure 2, the remote terminal (for example, remote UE) 103 is located within the coverage of the network device 101 (in coverage, IC), and the relay terminal (for example, relay UE) 102 is located in the network device 101 Within the coverage (in coverage, IC), the remote terminal and the relay terminal are in the same cell coverage.

As shown in (C) of Figure 2, the remote terminal (for example, remote UE) 103 is located within the coverage of the network device 104 (in coverage, IC), and the relay terminal (for example, relay UE) 102 is located in the network device 101 Within the coverage (in coverage, IC), the remote terminal and the relay terminal are in different cell coverages.

In (A), (B) and (C) of FIG. 2 , the relay terminal (for example, relay UE) 102 communicates with the network device 101 using the NR Uu link on the Uu interface, and the remote terminal (for example, remote The UE) 103 and the relay terminal (for example, relay UE) 102 can communicate on the PC5 interface, for example, using an NR sidelink link.

It should be noted that the above introduction to the technical background is only for the convenience of a clear and complete description of the technical solution of the present application, and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are known to those skilled in the art just because these solutions are described in the background technology section of this application.

Contents of the invention

In the SL relay scenario, when the relay UE is in RRC IDLE/RRC INACTVE and the remote UE is in RRC IDLE/RRC INACTVE, the relay UE monitors paging occasions (PO) for the remote UE that has a PC5-RRC connection with itself. That is to say, when the network pages the remote UE (for example, when the remote UE is called), the network sends a paging message to the remote UE at the PO corresponding to the remote UE. The relay UE wakes up at the PO of the remote UE, and monitors whether there is a paging message for the remote UE in the network. If the paging message for the remote UE is received, the relay UE forwards the paging message to the remote UE.

In order to receive the paging message on the side link (Sidelink, SL), the remote UE needs to listen to the physical side link control channel (PSCCH) on the side link and decode the physical side link shared channel (PSSCH), so as to obtain the side chain Sidelink Control Information (SCI) to determine whether there is a sidelink transmission for itself.

The inventors of the present application found that there is no regulation at present when the remote UE should monitor whether there is a paging message forwarded by the relay UE in the SL, and there is no enhancement of side link discontinuous reception (SL DRX) for the paging message Therefore, the remote UE needs to continuously monitor the PSCCH to receive paging messages, so the power consumption of the remote UE will greatly increase.

Aiming at at least one of the above problems, embodiments of the present application provide a method, device, and communication system for sending and receiving signals, and the relay UE can schedule a call after receiving a first paging opportunity related to a first paging message sent by a network device. Send the second paging message and/or the control information related to the second paging message (for example, the information carried by the PSCCH or the SCI) to the remote UE at the second paging opportunity, thus, the relay UE and the remote UE are responsible for the second paging The timing can have a consistent understanding, the remote UE does not have to continuously monitor the PSCCH or continuously receive the paging message on the side link, so the power consumption of the remote UE can be reduced, and the radio resources of the side link can be saved at the same time.

According to an aspect of an embodiment of the present application, there is provided an apparatus for sending and receiving signals, which is applied to a first terminal device, and includes a first sending and receiving unit, and the first sending and receiving unit is configured to:

Listening to the first paging occasion, receiving the first paging message sent by the network device; and

Sending a second paging message and/or control information related to the second paging message to a second terminal device (remote UE) at a second paging occasion, where the second paging occasion is located at the first After the paging occasion.

According to another aspect of the embodiments of the present application, there is provided an apparatus for sending and receiving signals, which is applied to a second terminal device, and includes a second sending and receiving unit, and the second sending and receiving unit is configured to:

Monitoring the second paging opportunity, receiving the second paging message sent by the first terminal device (relay UE) and/or the control information related to the second paging message,

the second paging occasion is located after the first paging occasion in the time domain,

The first timing is the timing when the first terminal device receives the first paging message.

One of the beneficial effects of the embodiments of the present application is that: the relay UE can send the second paging to the remote UE at the predetermined second paging occasion after receiving the first paging occasion related to the first paging message sent by the network device message and/or control information related to the second paging message (such as information carried by the PSCCH or SCI), so that the relay UE and the remote UE can have a consistent understanding of the second paging occasion, and the remote UE does not have to continuously monitor the PSCCH or The paging message on the side link is continuously received, so the power consumption of the remote UE can be reduced, and the wireless resources of the side link can be saved at the same time.

With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not limited thereby in scope. Embodiments of the present application encompass many changes, modifications and equivalents within the spirit and scope of the appended claims.

Features described and/or illustrated with respect to one embodiment can be used in the same or similar manner in one or more other embodiments, in combination with, or instead of features in other embodiments .

It should be emphasized that the term "comprising/comprising" when used herein refers to the presence of a feature, integer, step or component, but does not exclude the presence or addition of one or more other features, integers, steps or components.

Description of drawings

Elements and features described in one drawing or one embodiment of an embodiment of the application may be combined with elements and features shown in one or more other drawings or embodiments, more than one implementation of the application Examples can also be combined with each other. Furthermore, in the drawings, like numerals indicate corresponding parts in the several figures and may be used to indicate corresponding parts used in more than one embodiment.

Fig. 1 is a schematic diagram of a network device sending paging to a terminal device through a Uu interface;

Figure 2 is a schematic diagram of UE-to-Network relay;

FIG. 3 is a schematic diagram of a method for sending and receiving signals in an embodiment of the first aspect of the present application;

Fig. 4 is a schematic diagram of sending a paging message in an embodiment of the first aspect of the present application;

Fig. 5 is a schematic diagram of PO1 and PO2;

Fig. 6 is a schematic diagram of a method for sending and receiving signals in an embodiment of the second aspect;

Fig. 7 is a schematic diagram of a device for sending and receiving signals in an embodiment of the third aspect;

Fig. 8 is a schematic diagram of a device for sending and receiving signals in an embodiment of the fourth aspect;

Fig. 9 is a schematic diagram of a terminal device according to an embodiment of the fifth aspect;

Fig. 10 is a schematic diagram of a network device of an embodiment of the fifth aspect.

Detailed ways

The foregoing and other features of the present application will become apparent from the following description, taken with reference to the accompanying drawings. In the specification and drawings, specific embodiments of the present application are specifically disclosed, which indicate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments, on the contrary, the present application The application includes all amendments, variations and equivalents that come within the scope of the appended claims.

In this embodiment of the application, the terms "first", "second", etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or time order of these elements, and these elements should not be referred to by these terms restricted. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "comprising", "including", "having" and the like refer to the presence of stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.

In the embodiments of the present application, the singular forms "a", "the" and the like include plural forms, which should be broadly understood as "one" or "a class" and not limited to the meaning of "one"; in addition, the term "all The above should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, the term "based on" should be understood as "at least in part based on..." and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

In this embodiment of the application, the term "communication network" or "wireless communication network" may refer to a network conforming to any of the following communication standards, such as New Radio (NR, New Radio), Long Term Evolution (LTE, Long Term Evolution), Enhanced Long-term evolution (LTE-A, LTE-Advanced), wideband code division multiple access (WCDMA, Wideband Code Division Multiple Access), high-speed packet access (HSPA, High-Speed Packet Access), etc.

Moreover, the communication between devices in the communication system can be carried out according to any stage of communication protocols, such as but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G , New Radio (NR, New Radio), etc., and/or other communication protocols that are currently known or will be developed in the future.

In this embodiment of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network equipment may include but not limited to the following equipment: integrated access and backhaul node (IAB-node), base station (BS, Base Station), access point (AP, Access Point), sending and receiving point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.

Among them, the base station may include but not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include Remote Radio Head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low-power nodes (such as femeto, pico, etc.). And the term "base station" may include some or all of their functions, each base station may provide communication coverage for a particular geographic area. The term "cell" can refer to a base station and/or its coverage area depending on the context in which the term is used.

In this embodiment of the present application, the term "User Equipment" (UE, User Equipment) or "terminal equipment" (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services. A terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, etc.

Among them, the terminal equipment may include but not limited to the following equipment: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication equipment, handheld equipment, machine-type communication equipment, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.

For another example, in scenarios such as the Internet of Things (IoT, Internet of Things), the terminal device can also be a machine or device for monitoring or measurement, such as but not limited to: a machine type communication (MTC, Machine Type Communication) terminal, Vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, etc.

In addition, the term "network side" or "network device side" refers to one side of the network, which may be a certain base station, or may include one or more network devices as above. The term "user side" or "terminal side" or "terminal device side" refers to a side of a user or a terminal, which may be a certain UE, or may include one or more terminal devices as above.

In the embodiment of the present application, the high-level signaling may be, for example, radio resource control (RRC) signaling; for example, it is called an RRC message (RRC message), for example, it includes MIB, system information (system information), and a dedicated RRC message; or it is called RRC IE (RRC information element). The high-level signaling may also be, for example, MAC (Medium Access Control) signaling; or called MAC CE (MAC control element). But the present application is not limited thereto.

In each embodiment of the present application: the first terminal device may be the relay UE shown in Figure 2, that is, the first terminal device may be replaced with the relay UE; the second terminal device may be the remote UE shown in Figure 2, that is, the second terminal The device can be replaced with remote UE.

Embodiments of the first aspect

The embodiment of the first aspect provides a method for sending and receiving signals, which is applied to a first terminal device, for example, a relay UE.

Fig. 3 is a schematic diagram of a method for sending and receiving signals in an embodiment of the first aspect of the present application. As shown in Fig. 3, the method includes:

Operation 301. Listen to a first paging opportunity, and receive a first paging message sent by a network device; and

Operation 302: Send a second paging message and/or control information related to the second paging message to the second terminal device at a second paging occasion, where the second paging occasion is located in the time domain of the first paging After the time.

In operation 302, the control information related to the second paging message may be the information carried in the PSCCH, such as the content of the first phase side link control information (SCI), including priority, PSSCH resource allocation, resource reservation period, The format of the SCI in the second stage, the resource amount of the SCI in the second stage, the modulation and coding scheme (MCS), etc., or the control information related to the second paging message may be side link control information (SCI).

In operation 302, the first terminal device sends a second paging message and/or control information related to the second paging message to the second terminal device at the second paging occasion, which may be that the first terminal device The SCI (carried in PSCCH and PSSCH) related to the second paging message is sent at the right time, and the L1 destination ID contained in the SCI can be the L1 ID of the second terminal device; or it can be sent by the first terminal device at the second paging time The PSCCH related to the second paging message, which indicates the resources of the PSSCH, and the PSSCH can carry the SCI of the second stage and/or the second paging message; or it can be that the first terminal device sends the second paging message at the second paging occasion PSCCH and PSSCH related to the paging message, where the PSSCH carries the second paging message.

In operation 302, the second paging occasion is located after the first paging occasion in the time domain, or the second paging occasion is located in the time domain in the first paging occasion and the PDCCH indicates the first paging message After the PDSCH.

According to the embodiment of the first aspect, the relay UE can send the second paging message to the remote UE at a predetermined second paging occasion after receiving the first paging occasion related to the first paging message sent by the network device and/or Or the control information related to the second paging message (such as the information carried by the PSCCH or SCI), so that the relay UE and the remote UE can have a consistent understanding of the second paging occasion, and the remote UE does not have to continuously monitor the PSCCH or continuously receive The paging message on the side link can reduce the power consumption of the remote UE and save the wireless resources of the side link.

Fig. 4 is a schematic diagram of sending a paging message in the embodiment of the first aspect of the present application.

As shown in Figure 4, the first paging occasion PO1 (paging occasion 1) is the paging occasion of the Uu interface corresponding to the second terminal device (for example, remote UE). The configuration and calculation of PO1 can refer to the configuration of the Uu interface currently specified And the calculation formula, in the configuration and calculation formula, the UE_ID used is the UE_ID of the remote UE, that is, the value of the 5G-S-TMSI modulo 1024 of the remote UE. The first terminal device monitors PO1, and receives the paging message sent by the network device gNB to the remote UE, that is, the first paging message. In addition, in this application, PO1 may also be referred to as PO1 of the remote UE.

In FIG. 4, the second paging occasion PO2 (paging occasion 2) is the second paging message and/or the second paging message sent by the first terminal device (for example, relay UE) to the remote UE on the side link The paging occasion where the related control information (such as the information carried by the PSCCH or the SCI) is located. The second paging message corresponds to the first paging message, for example, the second paging message is the same as the first paging message, or the relay UE parses and/or splits and/or reassembles the first paging message, etc. processing, so as to obtain the second paging message for the remote UE.

In addition, in Figure 4, 5GC represents the 5G core network.

Figure 5 is a schematic diagram of PO1 and PO2. As shown in Figure 5, the PO2 of the remote UE is behind the PO1 of the remote UE or after the PDSCH indicated by the PDCCH in PO1.

As shown in Figure 5, the remote UE can discontinuously monitor the SCI on the sidelink (carried in the PSCCH and PSSCH) on PO2, thereby reducing the power consumption of the remote UE. In addition, in a time division duplex (TDD) system, the PO of the Uu interface is in the downlink slot, and the PO on the SL is the moment when the relay UE sends paging and/or paging-related control information, and the Uu carrier is used in the SL (or In the case where SL and Uu have the same carrier), the PO on SL is one or more than one SL slot in the uplink slot of the relay UE, or one or more than one SL symbol (symbol) in the SL slot. In this application, PO2 is the predetermined paging occasion after PO1 or PDSCH indicated by PDCCH in PO1, therefore, relay UE and remote UE have a consistent understanding of PO2.

In at least one embodiment, the second paging occasion (PO2) in operation 302 may be determined according to the first paging occasion (PO1) or the PDSCH indicated by the PDCCH in PO1. Wherein, the first paging occasion is a paging occasion corresponding to the second terminal device on the Uu interface. In addition, PO1 is calculated by the remote UE according to the Uu interface PO calculation formula and configured parameters.

Next, a different embodiment for determining the second paging occasion ( PO2 ) will be described.

Implementation mode 1:

In Embodiment 1, the second paging occasion (PO2) has a predetermined time offset relative to the first paging occasion (PO1) or the PDSCH indicated by the PDCCH in PO1.

The time offset may be configured by a network device (for example, gNB) to the first terminal device, for example, the network device configures the time offset to the first terminal through a system information block (SIB) or a radio resource control (RRC) message device; or, the time offset may be pre-configured to the first terminal device; or, the time offset is configured to the first terminal device by the second terminal device, for example, the second terminal device sends the time offset through the PC5-RRC message The offset is configured to the first terminal device. The unit of the time offset can be frame (frame) or half frame (half frame) or slot (slot) or symbol (symbol) or side link slot (SL slot) or side link symbol (SL symbol), etc. .

The time offset can be individually configured or pre-configured for different remote UEs. For example, assuming that the relay UE has PC5 RRC connections with remote UE1 and remote UE2, for the relay UE, the time offset and remote UE1 corresponding time offset and remote UE1 can be configured or pre-configured. The time offset corresponding to UE2; or, the time offset can also be configured for a group of remote UEs. For example, assuming that the relay UE has PC5 RRC connections with remote UE1, remote UE2, and remote UE3, the relay UE can be configured or pre-configured The time offset corresponding to remote UE1 and remote UE2 (these two remote UEs form a group) and the time offset corresponding to remote UE3; or, the same time offset can also be configured for all remote UEs, for example, assuming that the relay UE and remote UE1, remote UE2, and remote UE3 have PC5 RRC connections, and for relay UEs, remote UE1, remote UE2, and remote UE3 can be configured or pre-configured to correspond to the same time offset.

In Embodiment 1, the time offset may be the time offset in the sidelink (sidelink) transmission resource pool of the first terminal device. For example, assuming that the unit of the time offset is slot, PO2 is PO1 or PO1 After the PDSCH indicated by the PDCCH, the first SL slot in the side link transmission resource pool of the relay UE plus the slot of the time offset, the method of determining PO2 is similar to the time offset of other units.

Wherein, the second terminal device may be provided by the network device or the first terminal device with information about the sidelink transmission resource pool of the first terminal device, so that the second terminal device can use the sidelink (sidelink) transmission resource pool The time unit is used as a time offset to determine PO2.

Alternatively, the time offset may be the time offset in the sidelink (sidelink) receiving resource pool of the second terminal device. For example, assuming that the unit of the time offset is slot, PO2 is PO1 or the PDSCH indicated by the PDCCH in PO1 Afterwards, the first SL slot in the side link receiving resource pool of the remote UE is added to the slot of the time offset. For the time offset of other units, the method of determining PO2 is similar.

Wherein, the first terminal device may be provided by the network device or the second terminal device with information about the sidelink (sidelink) receiving resource pool of the second terminal device, so that the first terminal device can use the sidelink (sidelink) to receive The time unit in the resource pool is used as the time offset to determine PO2.

Implementation mode 2:

In Embodiment 2, the second paging occasion (PO2) is the first paging occasion or the Kth one in the side link transmission resource pool of the first terminal device after the PDSCH indicated by the PDCCH in the first paging occasion SL time slot (slot) (or, PSCCH transmission opportunity), K is a natural number.

In at least one embodiment, K is 1. That is, the second paging occasion (PO2) is the first paging occasion or the first time slot (slot) in the side link transmission resource pool of the first terminal device after the PDSCH indicated by the PDCCH in the first paging occasion. ), that is, PO2 is the first available SL transmission resource of the relay UE after PO1 or the PDSCH indicated by the PDCCH in PO1.

For example, suppose PO1 is in slot 0 of subframe 5 with system frame number (SFN) 0, and the SL transmission resource pool configured for relay UE is in slot 0, slot2, slot4 of subframe 5 with SFN 0, Then PO2 can be slot 2 of subframe 5 with SFN 0.

In Embodiment 2, the second terminal device may be provided by the network device or the first terminal device with information about the sidelink (sidelink) transmission resource pool of the first terminal device, so that the second terminal device can use the sidelink (sidelink) Send the scheduled time slot in the resource pool as PO2.

Implementation mode 3:

In Embodiment 3, the second paging occasion is the first paging occasion or the Lth SL time slot in the side link receiving resource pool of the second terminal device after the PDSCH indicated by the PDCCH in the first paging occasion (slot) (or, PSCCH monitoring opportunity), L is a natural number.

In at least one embodiment, L is 1. That is, the second paging occasion is the first paging occasion or the first time slot (slot) in the side link receiving resource pool of the second terminal device after the PDSCH indicated by the PDCCH in the first paging occasion. That is to say, PO2 is the first available SL receiving resource of the remote UE after PO1 or the PDSCH indicated by the PDCCH in PO1.

For example, suppose PO1 is in slot 0 of subframe 5 with SFN 0, and the SL receiving resource pool configured by remote UE is in slot 0, slot2, slot 4 of subframe 5 with SFN 0, then PO2 can be in SFN 0 slot 2 of subframe 5.

In Embodiment 3, the first terminal device may be provided by the network device or the second terminal device with information about the sidelink (sidelink) receiving resource pool of the second terminal device, so that the first terminal device can use the sidelink (sidelink) Receives a scheduled time slot in the resource pool as PO2.

Implementation mode 4:

In Embodiment 4, the second paging occasion is obtained by calculating parameters.

In Embodiment 4, the parameters used to calculate the second paging occasion are not exactly the same as the parameters used to calculate the first paging occasion (for example, PO1 in FIG. 4 ). That is, the parameters for calculating PO2 are configured at least partially separately from the parameters for calculating PO1.

The parameters used to calculate the second paging opportunity include at least one of the following parameters: paging discontinuous reception cycle (paging DRX cycle), the number of paging radio frames in the paging discontinuous reception cycle, the number of paging radio frames The number of paging occasions and the offset value for determining the paging radio frame.

When the paging discontinuous reception cycle (paging DRX cycle) is used as a parameter for calculating PO2, the paging discontinuous reception cycle takes the uplink time slot of the first terminal device as the unit, or takes the side link time slot as the unit .

The parameters for calculating the second paging occasion may be configured by the network device (for example, the network device configures the parameters for calculating PO2 to the first terminal device through a SIB or RRC message), or be pre-configured, or be configured by the second Terminal device configuration (for example, the second terminal device configures the parameters for calculating PO2 for the first terminal device through a PC5-RRC message).

In Embodiment 4, the first terminal device (relay UE) monitors PO1, and if it receives the paging message from the network device to the remote UE, the PDSCH indicated by the PDCCH in PO1 or the first paging opportunity is calculated according to this group of parameters The Mth PO2 in more than one PO2 sends the paging message and/or the control information related to the paging message to the remote UE (M is a natural number, which can be 1), for example, after the PDSCH indicated by the PDCCH in PO1 or PO1 The next PO2 (that is, the first candidate opportunity) calculated according to this set of parameters sends the paging message to the remote UE.

The method for calculating PO2 may be consistent with the method for calculating PO1 at the Uu interface, or other formulas may be used.

For example, PO2 and/or PO1 can be calculated in the manner shown in Table 1 below.

Table 1

Implementation mode 5:

In Embodiment 5, the first paging occasions appear repeatedly in the time domain (for example, PO1 calculated according to the above Table 1 repeatedly appears in the time domain), each first paging occasion or the PDCCH in the first paging occasion There are more than one second paging occasions after the indicated PDSCH, and the first terminal device receives more than one second paging occasion after receiving the first paging occasion related to the first paging message or the PDSCH indicated by the PDCCH in the first paging occasion In the second paging occasion, send the second paging message and/or control information related to the second paging message to the second terminal device (remote UE).

In Embodiments 1 to 4, one PO1 corresponds to one PO2. If the monitoring of the current PO2 fails to receive the second paging message, it is necessary to monitor the PO2 corresponding to the next PO1 (that is, the next PO1 or the next PO1 PO2 after the PDSCH indicated by the PDCCH) to receive the second paging message again; and in Embodiment 5, one PO1 may correspond to more than one PO2, thus, the second terminal device can A second paging message is received.

In Embodiment 5, each PO2 among more than one PO2 corresponding to one PO1 may be PO2 obtained according to Embodiments 1 to 4, or the side chain after the PDSCH indicated by the PDCCH in the PO1 or PO1 One PSCCH monitoring occasion (SL PSCCH monitoring occasion) or one side link time slot (SL slot).

In the embodiments of the first aspect (for example, in Embodiments 1 to 5), when multiple (for example, at least 2) second terminal devices are in the UE-to-Network relay scenario, each second terminal device has respective PO2. The second paging occasions corresponding to the at least two second terminal devices can completely overlap in the time domain (thus, paging messages can be sent to more than one remote UE in one PO2, saving SL resources), without Overlap (thereby, the receiving time of the paging message of each remote UE can be dispersed, thereby distributing the load (load) of paging) or partial overlap (thus, the effects of complete overlap and non-overlap can be taken into account).

In the embodiments of the first aspect (for example, in Embodiments 1 to 5), the first terminal device may send the second paging message and/or control information related to the second paging message based on the feedback from the second terminal device For example, when the second paging message is not successfully received by the second terminal device, the first terminal device may no longer send the second paging message, and/or, when the second paging message is not successfully received by the second terminal device When receiving, for example, the second terminal device may feed back HARQ NACK to the first terminal device, or the second paging message requires HARQ feedback but the first terminal device does not receive the HARQ feedback, etc., the first terminal device responds in the second paging message The second paging message and/or the control information related to the second paging message are sent in the next PSCCH monitoring occasion (PSCCH monitoring occasion) or the next side link transmission resource (for example, SL slot) after the corresponding PSFCH, The second terminal device needs to continuously monitor N1 side link resources (such as SL slots) after the PSFCH corresponding to PO2, where N1 is a positive integer (such as 1), to receive the second paging message and/or the second paging message related control information, or, the first terminal device may send the second paging message and/or Control information related to the second paging message. In addition, in Embodiment 5, since there is more than one PO2 after one PO1 or the PDSCH indicated by the PDCCH in PO1, in Embodiment 5, the second search can also be retransmitted on the more than one PO2. paging message, the second terminal device needs to monitor the more than one PO2 to receive the second paging message.

In the embodiments of the first aspect (for example, in Embodiments 1 to 5), the first terminal device may blindly transmit the second paging message, for example, the first terminal device may transmit the second paging message more than once. Paging message, the first terminal device sends N2 (N2 is a positive integer) PSCCH monitoring occasions (PSCCH monitoring occasion) or the next side link after sending the second paging message or the control information related to the second paging message Send the second paging message and/or the control information related to the second paging message in the resource (for example, SL slot), if the second terminal device receives the second paging message correctly, it can no longer monitor the subsequent side chain Otherwise, the second terminal device monitors N2 side link resources (for example, SL slot) after PO2 to receive the second paging message. In addition, in Embodiment 5, since there is more than one PO2 after one PO1 or the PDSCH indicated by the PDCCH in PO1, in Embodiment 5, the second search can also be retransmitted on the more than one PO2. paging message, the second terminal device needs to monitor the more than one PO2 to receive the second paging message.

In the embodiment of the first aspect, in at least one embodiment, the first terminal device sends a second paging message and/or to one or at least two second terminal devices (remote UE) at the second paging occasion The control information related to the second paging message, wherein the first paging occasions corresponding to the at least two second terminal devices are at least partially overlapped.

For example, when the relay UE knows the PO1 of the remote UE and does not parse the content of the paging message, that is, the relay UE can determine which remote UE(s) to send the paging message to according to PO1, without parsing the paging carried in the paging message When the record list is used to obtain the identity of the UE being paged, the relay UE can combine the paging message and /or the control information related to the paging message is (respectively) sent to the remote UE(s). Specifically, for example, assuming that the PO1 of remote UE1 and remote UE2 overlap, when the relay UE listens to PO1 and receives a paging message, it can send the paging message and/or the control information related to the paging message in PO2 corresponding to remote UE1, and the remote The paging message and/or the control information related to the paging message are sent in PO2 corresponding to UE2, wherein, PO2 corresponding to remote UE1 and PO2 corresponding to remote UE2 may completely overlap, partially overlap or not overlap.

In an embodiment of the first aspect, in at least another embodiment, the first terminal device parses the first paging message, and includes paging messages for at least two second terminal devices in the first paging message In the case of , the first terminal device sends the second paging message to the at least two second terminal devices at the second paging occasion corresponding to the at least two second terminal devices and/or the second paging message related The control information of the first paging message is the same as the second paging message (for example, the first terminal device does not split the first paging message).

For example, in the case where the relay UE parses the content of the paging message (for example, the first paging message), that is, the relay UE can know the list of UE identifiers included in the paging message, if the paging message includes remote UE1 and the identity of remote UE2, the relay UE can send the paging message (for example, the first paging message) and/or the control information related to the paging message to remote UE1 in PO2 corresponding to remote UE1, and send the paging message to remote UE1 in PO2 corresponding to remote UE2 Send the paging message (for example, the first paging message) and/or the control information related to the paging message to the remote UE2.

In the embodiment of the first aspect, in at least another embodiment, the first terminal device parses the first paging message, and the first paging message includes paging messages for at least 2 second terminal devices Next, the first paging message is split to form a second paging message for each second terminal device, wherein, at the second paging occasion corresponding to each of the at least two second terminal devices, the first terminal device, Send the corresponding second paging message and/or control information related to the second paging message to each second terminal device.

For example, in the case where the relay UE parses the content of the paging message (for example, the first paging message), that is, the relay UE can know the list of UE identifiers included in the paging message, if the paging message includes remote UE1 and the identity of remote UE2, the relay UE can split the paging message into two paging messages, wherein paging message 1 (ie, the second paging message corresponding to remote UE1) corresponds to remote UE1, and paging message 2 (ie, corresponding to remote UE2 The second paging message) corresponds to remote UE2, sends paging message 1 and/or control information related to paging message 1 to remote UE1 in PO2 corresponding to remote UE1, and sends paging message 2 and/or paging message 1 in PO2 corresponding to remote UE2 Or the control information related to the paging message 2 is sent to the remote UE2.

In the embodiment of the first aspect, in at least one further embodiment, when at least two second terminal devices correspond to the first paging occasion, the first terminal device parses the first paging message, if the The first paging message includes a paging message for a second terminal device, then the first terminal device sends a second paging message to the second terminal device at a second paging opportunity corresponding to the second terminal device paging message and/or control information related to the second paging message, wherein the second paging message is the same as the first paging message, that is, the first terminal device does not split the first paging message, but The first paging message is sent to the second terminal device as a second paging message.

For example, remote UE1 and remote UE2 are both connected to relay UE, and PO1 corresponding to remote UE1 and PO1 corresponding to remote UE2 overlap at least partially, when relay UE listens to PO1 corresponding to these two remote UEs, it receives a paging message (that is, the paging message), the relay UE parses the paging message, and the paging message only contains the paging record for remote UE1 (that is, the first paging message only includes the paging message for remote UE1), then the relay UE can only Send the paging message and/or the control information related to the paging message to the remote UE1 at the PO2 corresponding to the remote UE1, instead of sending it to the remote UE2, so as to save SL resources.

In the embodiment of the first aspect, the length of the second paging occasion PO2 is related to the PBSCH/synchronization signal block (SSB) or reference signal in the side link, for example, multiple beams (beam) or SL- In the case of SSB transmission, the length of PO2 is proportional to the number of beams or SL-SSBs in SL or the number of SL-SSBs actually sent. And/or, the length of PO2 can also be equal to X time slots or PSCCH monitoring occasions (PSCCH monitoring occasion), X is a natural number, for example X=1, X can be a value configured by the network device or a pre-configured value.

According to the embodiment of the first aspect, the relay UE can send the second paging message to the remote UE at a predetermined second paging occasion after receiving the first paging occasion related to the first paging message sent by the network device and/or Or the control information related to the second paging message, so that the relay UE and the remote UE can have a consistent understanding of the second paging opportunity, and the remote UE does not have to continuously monitor the PSCCH or continuously receive paging messages on the side link, so , while reducing the power consumption of the remote UE and saving radio resources of the side link.

Embodiments of the second aspect

Aiming at at least the same problem as the embodiment of the first aspect, the embodiment of the second aspect of the present application provides a method for sending and receiving signals, which is applied to a second terminal device. The method for sending and receiving signals in the embodiment of the second aspect corresponds to the method for sending and receiving signals in the embodiment of the first aspect.

Fig. 6 is a schematic diagram of a method for sending and receiving signals in an embodiment of the second aspect. As shown in Figure 6, the methods for sending and receiving signals include:

Operation 601, monitor the second paging opportunity (PO2), and receive the second paging message sent by the first terminal device (relay UE) and/or the control information related to the second paging message, wherein the second paging opportunity is at It is located after the first paging occasion in the time domain, and the first occasion is the occasion when the first terminal device receives the first paging message.

According to the embodiment of the second aspect, the remote UE can receive the first paging opportunity related to the first paging message sent by the network device or the scheduled second paging after the PDSCH indicated by the PDCCH in the first paging occasion. The paging opportunity receives the second paging message and/or the control information related to the second paging message from the relay UE, so that the relay UE and the remote UE can have a consistent understanding of the second paging occasion, and the remote UE does not have to continuously monitor the PSCCH Or continuously receive the paging message on the side link, so the power consumption of the remote UE can be reduced, and the wireless resources of the side link can be saved at the same time.

In at least one embodiment, the second paging occasion may be determined based on the first paging occasion. The first paging opportunity is the paging opportunity corresponding to the second terminal device on the Uu interface, and PO1 is calculated by the remote UE according to the Uu interface PO calculation formula and configured parameters.

Next, a different embodiment for determining the second paging occasion ( PO2 ) will be described.

Implementation mode 1:

In Embodiment 1, the second paging occasion (PO2) has a predetermined time offset relative to the first paging occasion (PO1) or the PDSCH indicated by the PDCCH in PO1.

The time offset may be configured by a network device (for example, gNB) to the second terminal device, for example, the network device configures the time offset to the second terminal through a system information block (SIB) or a radio resource control (RRC) message device; or, the time offset may be pre-configured to the second terminal device; or, the time offset is configured to the second terminal device by the first terminal device, for example, the first terminal device sends the time offset through the PC5-RRC message The offset is configured to the second terminal device. The unit of the time offset may be frame (frame) or half frame (half frame) or time slot (slot) or symbol (symbol) or SL slot or SL symbol.

The time offset can be individually configured or pre-configured for different remote UEs. For example, assuming that the relay UE has PC5 RRC connections with remote UE1 and remote UE2, for the relay UE, the time offset and remote UE1 corresponding time offset and remote UE1 can be configured or pre-configured. The time offset corresponding to UE2; or, the time offset can also be configured for a group of remote UEs. For example, assuming that the relay UE has PC5 RRC connections with remote UE1, remote UE2, and remote UE3, the relay UE can be configured or pre-configured The time offset corresponding to remote UE1 and remote UE2 (these two remote UEs form a group) and the time offset corresponding to remote UE3; or, the same time offset can also be configured for all remote UEs, for example, assuming that the relay UE and remote UE1, remote UE2, and remote UE3 have PC5 RRC connections, and for relay UEs, remote UE1, remote UE2, and remote UE3 can be configured or pre-configured to correspond to the same time offset.

In Embodiment 1, the time offset may be the time offset in the sidelink (sidelink) transmission resource pool of the first terminal device. For example, assuming that the unit of the time offset is slot, PO2 is PO1 or PO1 After the PDSCH indicated by the PDCCH, the first SL slot in the side link transmission resource pool of the relay UE plus the slot of the time offset, the method of determining PO2 is similar to the time offset of other units.

Wherein, the second terminal device may be provided by the network device or the first terminal device with information about the sidelink transmission resource pool of the first terminal device, so that the second terminal device can use the sidelink (sidelink) transmission resource pool The time unit is used as a time offset to determine PO2.

Alternatively, the time offset may also be the time offset in the sidelink (sidelink) receiving resource pool of the second terminal device. For example, assuming that the unit of the time offset is slot, PO2 is indicated by PO1 or the PDCCH in PO1 After the PDSCH, the first SL slot in the side link receiving resource pool of the remote UE plus the slot of the time offset, the method of determining PO2 is similar to the time offset of other units.

Wherein, the second terminal device may be provided by the network device or the first terminal device with information about the sidelink (sidelink) sending resource pool of the first terminal device, so that the second terminal device can use the sidelink (sidelink) to send A time unit (for example, time slot) in the resource pool is used as a time offset to determine PO2.

Implementation mode 2:

In Embodiment 2, the second paging occasion (PO2) is the first paging occasion or the Kth one in the side link transmission resource pool of the first terminal device after the PDSCH indicated by the PDCCH in the first paging occasion SL time slot (slot) (or, PSCCH transmission opportunity), K is a natural number.

In at least one embodiment, K is 1. That is, the second paging occasion (PO2) is the first paging occasion or the first time slot (slot) in the side link transmission resource pool of the first terminal device after the PDSCH indicated by the PDCCH in the first paging occasion. ), that is, PO2 is the first available SL transmission resource of the relay UE after PO1 or the PDSCH indicated by the PDCCH in PO1.

For example, suppose PO1 is in slot 0 of subframe 5 with system frame number (SFN) 0, and the SL transmission resource pool configured for relay UE is in slot 0, slot2, slot4 of subframe 5 with SFN 0, Then PO2 can be slot 2 of subframe 5 with SFN 0.

In Embodiment 2, the second terminal device may be provided by the network device or the first terminal device with information about the sidelink (sidelink) transmission resource pool of the first terminal device, so that the second terminal device can use the sidelink (sidelink) Send the scheduled time slot in the resource pool as PO2.

Implementation mode 3:

In Embodiment 3, the second paging occasion is the first paging occasion or the Lth SL time slot in the side link receiving resource pool of the second terminal device after the PDSCH indicated by the PDCCH in the first paging occasion (slot) (or, PSCCH monitoring opportunity), L is a natural number.

In at least one embodiment, L is 1. That is, the second paging occasion is the first paging occasion or the first time slot (slot) in the side link receiving resource pool of the second terminal device after the PDSCH indicated by the PDCCH in the first paging occasion. That is to say, PO2 is the first available SL receiving resource of the remote UE after PO1 or the PDSCH indicated by the PDCCH in PO1.

For example, suppose PO1 is in slot 0 of subframe 5 with SFN 0, and the SL receiving resource pool configured by remote UE is in slot 0, slot2, slot 4 of subframe 5 with SFN 0, then PO2 can be in SFN 0 slot 2 of subframe 5.

In Embodiment 3, the first terminal device may be provided by the network device or the second terminal device with information about the sidelink (sidelink) receiving resource pool of the second terminal device, so that the first terminal device can use the sidelink (sidelink) Receives a scheduled time slot in the resource pool as PO2.

Implementation mode 4:

In Embodiment 4, the remote UE obtains the second paging opportunity by calculating the parameters.

In Embodiment 4, the parameters used to calculate the second paging occasion are not exactly the same as the parameters used to calculate the first paging occasion (for example, PO1 in FIG. 4 ). That is, the parameters for calculating PO2 are configured at least partially separately from the parameters for calculating PO1.

The parameters used to calculate the second paging opportunity include at least one of the following parameters: paging discontinuous reception cycle (paging DRX cycle), the number of paging radio frames in the paging discontinuous reception cycle, the number of paging radio frames The number of paging occasions and the offset value for determining the paging radio frame.

When the paging discontinuous reception cycle (paging DRX cycle) is used as a parameter for calculating PO2, the paging discontinuous reception cycle takes the uplink time slot of the first terminal device as the unit, or takes the side link time slot as the unit .

The parameters used to calculate the second paging occasion may be configured by the network device (for example, the network device configures the parameters used to calculate PO2 to the second terminal device through a SIB or RRC message), or be pre-configured, or be configured by the first Terminal device configuration (for example, the first terminal device configures the parameters for calculating PO2 for the second terminal device through a PC5-RRC message).

In Embodiment 4, the second terminal device performs paging monitoring in more than one PO2 calculated according to the set of parameters, so as to receive the second paging message.

The method for calculating PO2 may be consistent with the method for calculating PO1 at the Uu interface, or other formulas may be used.

For example, PO2 and/or PO1 can be calculated in the manner shown in Table 1 in the embodiment of the first aspect.

Implementation mode 5:

In Embodiment 5, the first paging occasions appear repeatedly in the time domain (for example, PO1 calculated according to the above Table 1 repeatedly appears in the time domain), each first paging occasion or the PDCCH in the first paging occasion There is more than one second paging opportunity after the indicated PDSCH, and the second terminal device performs paging at the first paging occasion or at more than one second paging occasion after the PDSCH indicated by the PDCCH in the first paging occasion call monitoring.

In Embodiments 1 to 4, one PO1 corresponds to one PO2. If the second paging message is not successfully received at the current PO2, the second terminal device needs to receive the second paging message at the PO2 corresponding to the next PO1 (that is, the next PO1 or the next PO2). PO2 after the PDSCH indicated by the PDCCH in PO1) monitors again to receive the second paging message; and in Embodiment 5, one PO1 may correspond to more than one PO2, and the second terminal device may be in the more than one PO2 Monitoring is performed on one PO2, so that the second terminal device can receive the second paging message with a relatively low delay.

In Embodiment 5, each PO2 among more than one PO2 corresponding to one PO1 may be PO2 obtained according to Embodiments 1 to 4, or the side chain after the PDSCH indicated by the PDCCH in the PO1 or PO1 One PSCCH monitoring occasion (SL PSCCH monitoring occasion) or one side link time slot (SL slot).

In the embodiments of the second aspect (for example, in Embodiments 1 to 5), when multiple (for example, at least 2) second terminal devices are in the UE-to-Network relay scenario, each second terminal device has respective PO2. The second paging occasions corresponding to the at least two second terminal devices can completely overlap in the time domain (thus, paging messages can be sent to more than one remote UE in one PO2, saving SL resources), without Overlap (thereby, the receiving time of the paging message of each remote UE can be dispersed, thereby distributing the load (load) of paging) or partial overlap (thus, the effects of complete overlap and non-overlap can be taken into account).

In the embodiments of the second aspect (for example, in Embodiments 1 to 5), when the second paging message is not successfully received by the second terminal device, for example, the second terminal device may feed back a HARQ NACK to the first terminal device, or the second paging message requires HARQ feedback but the first terminal device does not receive HARQ feedback, etc., the second terminal device can continuously monitor the N1 side link resources after the physical side link feedback channel (PSFCH) corresponding to PO2 (such as SL slot), N1 is a positive integer (such as 1), to receive the second paging message, or, the second terminal device is at the next first paging opportunity or the first paging opportunity after the PDSCH indicated by the PDCCH in the first paging opportunity Two paging occasions to perform paging monitoring. In addition, in Embodiment 5, since there is more than one PO2 after one PO1 or the PDSCH indicated by the PDCCH in PO1, the first terminal device can resend the second paging message on the more than one PO2, The second terminal device may perform paging monitoring on the more than one PO2 to receive the second paging message.

In an embodiment of the second aspect (for example, in Embodiments 1 to 5), the first terminal device may blindly transmit the second paging message, for example, the first terminal device may transmit the second paging message more than once. Paging message, the first terminal device sends N2 (N2 is a positive integer) PSCCH monitoring occasions (PSCCH monitoring occasion) or the next side link after sending the second paging message or the control information related to the second paging message If the second paging message is sent in the resource (for example, SL slot), if the second terminal device receives the second paging message correctly, it can no longer monitor the subsequent side link resources; otherwise, the second terminal device keeps monitoring until after PO2 N2 side link resources (for example, SL slot) for receiving the second paging message. In addition, in Embodiment 5, since there is more than one PO2 after one PO1 or the PDSCH indicated by the PDCCH in PO1, in Embodiment 5, the second search can also be retransmitted on the more than one PO2. paging message, the second terminal device needs to monitor the more than one PO2 to receive the second paging message.

According to the embodiment of the second aspect, the remote UE can monitor the predetermined second paging occasion after the relay UE receives the first paging occasion related to the first paging message sent by the network device, thus, the relay UE and The remote UE can have a consistent understanding of the second paging opportunity. The remote UE does not have to continuously monitor the PSCCH or continuously receive the paging messages on the side link. Therefore, the power consumption of the remote UE can be reduced, and the radio frequency of the side link can be saved. resource.

Embodiments of the third aspect

An embodiment of the present application provides an apparatus for sending and receiving signals, which is applied to a first terminal device, for example, a relay UE.

Fig. 7 is a schematic diagram of the device for transmitting and receiving signals in the embodiment of the third aspect. As shown in Fig. 7, the device for transmitting and receiving signals 700 includes a first transceiving unit 701, and the first transceiving unit 701 is configured as:

Listening to the first paging occasion, receiving the first paging message sent by the network device; and

Sending a second paging message and/or control information related to the second paging message to a second terminal device (remote UE) at a second paging occasion, where the second paging occasion is located in the time domain on the first paging After the time.

In at least one embodiment, the second paging occasion is determined based on the first paging occasion.

In at least one embodiment, the second paging occasion has a predetermined time offset relative to the first paging occasion or the PDSCH indicated by the PDCCH in the first paging occasion.

In at least one embodiment, the time offset is configured by the network device, or is preconfigured, or is configured by the second terminal device.

In at least one embodiment, the time offset is the time offset in the sidelink (sidelink) sending resource pool of the first terminal device, or the time offset in the sidelink (sidelink) receiving resource pool of the second terminal device time offset.

In at least one embodiment, the second paging occasion is after the first paging occasion or after the PDSCH indicated by the PDCCH in the first paging occasion in the side link transmission resource pool of the first terminal device Kth side link time slot (slot), K is a natural number.

In at least one embodiment, K is 1.

In at least one embodiment, the second paging occasion is after the first paging occasion or after the PDSCH indicated by the PDCCH in the first paging occasion in the side link receiving resource pool of the second terminal device The Lth side link time slot (slot), L is a natural number.

In at least one embodiment, L is 1.

In at least one embodiment, the second paging occasion is obtained by calculating parameters, wherein the parameters used to calculate the second paging occasion are not exactly the same as the parameters used to calculate the first paging occasion .

In at least one embodiment, the parameters used to calculate the second paging occasion include at least one of the following parameters: paging discontinuous reception period, the number of paging radio frames in the paging discontinuous reception period, paging The number of paging occasions in the radio frame and the offset value for determining the paging radio frame.

In at least one embodiment, among the parameters used to calculate the second paging opportunity, the paging discontinuous reception cycle (paging DRX cycle) is in units of uplink time slots, or in units of side link time slots.

In at least one embodiment, the parameters used for calculating the second paging occasion are configured by the network device, or are pre-configured, or are configured by the second terminal device.

In at least one embodiment, the first paging occasion occurs repeatedly in the time domain,

After each first paging occasion or after the PDSCH indicated by the PDCCH in the first paging occasion, there is more than one second paging occasion,

After receiving the first paging occasion of the first paging message or at more than one second paging occasions after the PDSCH indicated by the PDCCH in the first paging occasion, the first terminal device sends a message to the second terminal The device (remote UE) sends the second paging message.

In at least one embodiment, the second paging occasions corresponding to the at least two second terminal devices are completely overlapped, partially overlapped or not overlapped in the time domain.

In at least one embodiment, when the second paging message is not successfully received,

The first terminal device sends the second paging message in the next PSCCH monitoring occasion (PSCCH monitoring occasion) or the next side link transmission resource, or, the first terminal device sends the second paging message after the next first paging occasion The second paging message is sent at a paging occasion.

In at least one embodiment, the first terminal device sends a second paging message and/or information related to the second paging message to one or at least two second terminal devices (remote UE) at the second paging occasion. Control information, wherein the first paging occasions corresponding to the at least two second terminal devices are at least partially overlapped.

In at least one embodiment, the first transceiver unit 701 is also configured to:

causing the first terminal device to parse the first paging message, wherein, in the case that the first paging message includes paging messages for at least 2 second terminal devices, the at least 2 second terminal devices sending the second paging message and/or the control information related to the second paging message to the at least two second terminal devices at the corresponding second paging occasions, the first paging message is related to the second paging message The calling message is the same.

In at least one embodiment, the first transceiver unit 701 is also configured to:

In the case that at least two second terminal devices correspond to the first paging occasion, make the first terminal device parse the first paging message, wherein the first paging message includes In the case of the paging message of the terminal device, and, at the second paging occasion corresponding to the second terminal device, send the second paging message and/or the second paging message to the second terminal device related control information.

In at least one embodiment, the first transceiving unit 701 is further configured to make the first terminal device:

parsing the first paging message; and

In the case where the first paging message includes paging messages for at least two second terminal devices, splitting the first paging message to form a second paging message for each of the second terminal devices, Wherein, the first terminal device sends the corresponding second paging message to each second terminal device at the second paging occasion corresponding to each of the at least two second terminal devices and/or the second paging message is related to control information.

In at least one embodiment, the length of the second paging occasion is related to the SSB or reference signal in the side link and/or equal to X time slots or PSCCH monitoring occasions (PSCCH monitoring occasion), where X is a natural number.

In at least one embodiment, the first paging occasion is a paging occasion corresponding to the Uu interface of the second terminal device.

For the description of the device 700 for sending and receiving signals, reference may be made to the embodiment of the first aspect.

Embodiments of the fourth aspect

An embodiment of the present application provides an apparatus for sending and receiving signals, which is applied to a second terminal device, for example, a remote UE.

Fig. 8 is a schematic diagram of a device for transmitting and receiving signals in an embodiment of the fourth aspect. As shown in Fig. 8, the device for transmitting and receiving signals 800 includes a second transceiving unit 801, and the second transceiving unit 801 is configured to:

Listening to the second paging occasion, receiving the second paging message sent by the first terminal device (relay UE) and/or the control information related to the second paging message, the second paging occasion is located in the first paging time domain in the time domain After the paging timing, the first timing is the timing when the first terminal device receives the first paging message.

In at least one embodiment, the second paging occasion is determined based on the first paging occasion.

In at least one embodiment, the second paging occasion has a predetermined time offset relative to the first paging occasion or the PDSCH indicated by the PDCCH in the first paging occasion.

In at least one embodiment, the time offset is configured by the network device, or is preconfigured, or is configured by the first terminal device.

In at least one embodiment, the time offset is a time offset in a sidelink (sidelink) sending resource pool of the first terminal device, or a sidelink (sidelink) receiving resource pool of the second terminal device time offset in .

In at least one embodiment, the second paging occasion is the first paging occasion in the side link transmission resource pool of the first terminal device after the first paging occasion or after the PDSCH indicated by the PDCCH in the first paging occasion K side link time slots (slots), K is a natural number.

In at least one embodiment, K is 1.

In at least one embodiment, the second paging opportunity is the second paging opportunity in the side link receiving resource pool of the second terminal device after the first paging occasion or after the PDSCH indicated by the PDCCH in the first paging occasion L side link time slots (slots), where L is a natural number.

In at least one embodiment, L is 1.

In at least one embodiment, the second paging occasion is obtained by calculating parameters, wherein the parameters used to calculate the second paging occasion are not exactly the same as the parameters used to calculate the first paging occasion .

In at least one embodiment, the parameters used to calculate the second paging opportunity include at least one of the following: paging discontinuous reception period, the number of paging radio frames in the paging discontinuous reception period, the number of paging radio frames The number of paging occasions and the offset value for determining the paging radio frame.

In at least one embodiment, among the parameters used to calculate the second paging opportunity, the paging discontinuous reception cycle (paging DRX cycle) is in units of uplink time slots, or in units of side link time slots.

In at least one embodiment, the parameters used for calculating the second paging occasion are configured by the network device, or are pre-configured, or are configured by the first terminal device.

In at least one embodiment, the first paging occasion occurs repeatedly in the time domain,

There is more than one second paging occasion after each first paging occasion or after the PDSCH indicated by the PDCCH in the first paging occasion,

In more than one second paging occasion after the first paging occasion at which the first terminal equipment receives the first paging message or after the PDSCH indicated by the PDCCH in the first paging occasion, the second terminal device, Perform paging monitoring.

In at least one embodiment, the second paging occasions corresponding to the at least two second terminal devices are completely overlapped, partially overlapped or not overlapped in the time domain.

In at least one embodiment, when the second paging message is not successfully received, the second terminal device performs paging monitoring in the next PSCCH monitoring occasion (PSCCH monitoring occasion) or the next side link transmission resource, or , the second terminal device performs paging monitoring at a second paging occasion after the next first paging occasion.

In at least one embodiment, the length of the second paging occasion is related to the SSB or reference signal in the side link, and/or equal to X time slots or PSCCH monitoring occasions (PSCCH monitoring occasion), where X is a natural number.

In at least one embodiment, the first paging occasion is a paging occasion corresponding to the Uu interface of the second terminal device.

For the description of the device 800 for sending and receiving signals, reference may be made to the embodiment of the second aspect.

Embodiments of the fifth aspect

An embodiment of the present application also provides a communication system, where the communication system may include a first terminal device, a second terminal device, and a network device.

The first terminal device is, for example, a relayUE, the second terminal device is, for example, a remote UE, and the network device is, for example, a gNB. The network device can communicate with the first terminal device through the Uu link, and the first terminal device and the second terminal device can communicate through the sidelink.

Fig. 9 is a schematic diagram of a terminal device according to an embodiment of the fifth aspect, where the terminal device may be a first terminal device or a second terminal device. As shown in FIG. 9 , the terminal device 900 may include a processor 910 and a memory 920 ; the memory 920 stores data and programs, and is coupled to the processor 910 . It is worth noting that this figure is exemplary; other types of structures may also be used in addition to or instead of this structure to implement telecommunications functions or other functions.

For example, the processor 910 may be configured to execute a program to implement the method described in the embodiment of the first aspect or the embodiment of the second aspect.

As shown in FIG. 9 , the terminal device 900 may further include: a communication module 930 , an input unit 940 , a display 950 , and a power supply 960 . Wherein, the functions of the above components are similar to those of the prior art, and will not be repeated here. It should be noted that the terminal device 900 does not necessarily include all the components shown in FIG. have technology.

Fig. 10 is a schematic diagram of a network device of an embodiment of the fifth aspect. As shown in FIG. 10 , the network device 1000 may include: a processor 1010 (such as a central processing unit CPU) and a memory 1020 ; the memory 1020 is coupled to the processor 1010 . The memory 1020 can store various data; in addition, it also stores a program 1030 for information processing, and executes the program 1030 under the control of the processor 1010 .

For example, the processor 1010 may be configured to assist the first terminal device and the second terminal device to execute programs to implement the methods described in the embodiments of the first aspect and the second aspect.

In addition, as shown in FIG. 10 , the network device 1000 may further include: a transceiver 1040 and an antenna 1050 ; wherein, the functions of the above components are similar to those of the prior art, and will not be repeated here. It should be noted that the network device 1000 does not necessarily include all the components shown in FIG. 10 ; in addition, the network device 1000 may also include components not shown in FIG. 10 , and reference may be made to the prior art.

An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the methods described in the embodiments of the first aspect and the second aspect.

The embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program causes the terminal device to execute the methods described in the first and second embodiments.

The above devices and methods in this application can be implemented by hardware, or by combining hardware and software. The present application relates to a computer-readable program that, when executed by a logic component, enables the logic component to realize the above-mentioned device or constituent component, or enables the logic component to realize the above-mentioned various methods or steps. The present application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, and the like.

The method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the figure and/or one or more combinations of the functional block diagrams may correspond to each software module or each hardware module of the computer program flow. These software modules may respectively correspond to the steps shown in the figure. These hardware modules, for example, can be realized by solidifying these software modules by using a Field Programmable Gate Array (FPGA).

A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art. A storage medium can be coupled to the processor such that the processor can read information from, and write information to, the storage medium, or it can be an integral part of the processor. The processor and storage medium can be located in the ASIC. The software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) adopts a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or large-capacity flash memory device.

One or more of the functional blocks described in the accompanying drawings and/or one or more combinations of the functional blocks can be implemented as a general-purpose processor, a digital signal processor (DSP) for performing the functions described in this application ), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof. One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors processor, one or more microprocessors in communication with a DSP, or any other such configuration.

The present application has been described above in conjunction with specific implementation manners, but those skilled in the art should be clear that these descriptions are exemplary rather than limiting the protection scope of the present application. Those skilled in the art can make various variations and modifications to this application according to the spirit and principles of this application, and these variations and modifications are also within the scope of this application.

Regarding the implementation manner comprising the above embodiments, the following additional notes are also disclosed:

(Additional notes to the first group) 1. A method for sending and receiving signals, applied to the first terminal device, comprising:

Listening to the first paging occasion, receiving the first paging message sent by the network device; and

Sending a second paging message and/or control information related to the second paging message to a second terminal device (remote UE) at a second paging occasion, where the second paging occasion is located at the first After the paging occasion.

2. The method as described in Note 1, wherein,

The second paging occasion is determined according to the first paging occasion.

3. The method as described in Note 2, wherein,

The second paging occasion has a predetermined time offset relative to the first paging occasion or a physical downlink shared channel (PDSCH) indicated by a physical downlink control channel (PDCCH) in the first paging occasion.

4. The method as described in Note 3, wherein,

The time offset is configured by the network device, or is pre-configured, or is configured by the second terminal device.

5. The method as described in Note 3, wherein,

The time offset is a time offset in a sidelink (sidelink) sending resource pool of the first terminal device, or a time offset in a sidelink (sidelink) receiving resource pool of the second terminal device. shift.

6. The method as described in Note 2, wherein,

The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The Kth side link time slot (slot) in the side link sending resource pool of , K is a natural number.

7. The method as described in Note 6, wherein,

K is 1.

8. The method as described in Note 2, wherein,

The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The side link receiving the Lth side link time slot (slot) in the resource pool, L is a natural number.

9. The method as described in Note 8, wherein,

L is 1.

10. The method as described in Note 2, wherein,

The second paging occasion is

obtained by calculating the parameters,

Wherein, the parameters used for calculating the second paging occasion are not exactly the same as the parameters used for calculating the first paging occasion.

11. The method as described in appendix 10, wherein,

The parameters used to calculate the second paging opportunity include at least one of the following parameters: paging discontinuous reception period, the number of paging radio frames in the paging discontinuous reception period, and the paging occasion of the paging radio frame and determine the offset value of the paging radio frame.

12. The method as described in appendix 10, wherein,

Among the parameters used to calculate the second paging occasion,

The unit of the paging discontinuous reception cycle (paging DRX cycle) is the uplink slot, or the unit of the side link slot.

13. The method as described in appendix 10, wherein,

The parameters used for calculating the second paging occasion are configured by the network device, or are pre-configured, or are configured by the second terminal device.

14. The method according to any one of Supplements 1 to 13, wherein,

The first paging occasion occurs repeatedly in the time domain,

There is more than one second paging opportunity after each first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion,

After the first terminal device receives the first paging occasion of the first paging message or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion In more than one second paging occasion, sending the second paging message and/or control information related to the second paging message to a second terminal device (remote UE).

15. The method according to any one of Supplements 1 to 14, wherein,

The second paging occasions corresponding to the at least two second terminal devices are completely overlapped, partially overlapped or not overlapped in the time domain.

16. The method according to any one of Supplements 1 to 15, wherein,

When the second paging message is not successfully received,

The first terminal device sends the second paging message and/or the control information of the second paging message in the next PSCCH monitoring occasion (PSCCH monitoring occasion) or the next side link transmission resource, or, the The first terminal device sends the second paging opportunity after the next first paging occasion or at a second paging occasion after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. Control information related to the paging message and/or the second paging message.

17. The method according to any one of Supplements 1 to 16, wherein,

The first terminal device sends a second paging message and/or control information related to the second paging message to one or at least two second terminal devices (remote UEs) at the second paging occasion,

Wherein, the first paging occasions corresponding to the at least two second terminal devices are at least partially overlapped.

18. The method according to any one of Supplements 1-17, wherein the method further comprises:

The first terminal device parses the first paging message,

Wherein, in the case where the first paging message includes paging messages for at least 2 second terminal devices,

Sending the second paging message and/or control information related to the second paging message to the at least two second terminal devices at the second paging occasion corresponding to each of the at least two second terminal devices ,

The first paging message is the same as the second paging message.

19. The method according to any one of Supplements 1-17, wherein the method further comprises:

at least two second terminal devices corresponding to the first paging occasion, the first terminal device parsing the first paging message,

Wherein, in the case where the first paging message includes a paging message for one second terminal device,

At a second paging occasion corresponding to the one second terminal device, sending the second paging message and/or control information related to the second paging message to the one second terminal device.

20. The method according to any one of Supplements 1-17, wherein the method further comprises:

the first terminal device parses the first paging message; and

In the case that the first paging message includes paging messages for at least two second terminal devices, splitting the first paging message to form a second paging message for each of the second terminal devices message,

Wherein, the first terminal device sends the corresponding second paging message and/or the second Control information related to paging messages.

21. The method according to any one of Supplements 1 to 20, wherein,

The length of the second paging occasion is related to the SSB or reference signal in the side link, and/or equal to X time slots or PSCCH monitoring occasions (PSCCH monitoring occasion), where X is a natural number.

22. The method according to any one of Supplements 1 to 21, wherein,

The first paging occasion is a paging occasion corresponding to the second terminal device on the Uu interface.

(Second set of notes)

1. A method for sending and receiving signals, applied to a second terminal device, comprising:

Monitoring the second paging opportunity, receiving the second paging message sent by the first terminal device (relay UE) and/or the control information related to the second paging message,

the second paging occasion is located after the first paging occasion in the time domain,

The first timing is the timing when the first terminal device receives the first paging message.

2. The method as described in Note 1, wherein,

The second paging occasion is determined according to the first paging occasion.

3. The method as described in Note 2, wherein,

The second paging occasion has a predetermined time offset relative to the first paging occasion or a physical downlink shared channel (PDSCH) indicated by a physical downlink control channel (PDCCH) in the first paging occasion.

4. The method as described in Note 3, wherein,

The time offset is configured by the network device, or is pre-configured, or is configured by the first terminal device.

5. The method as described in Note 3, wherein,

The time offset is a time offset in a sidelink (sidelink) sending resource pool of the first terminal device, or a time offset in a sidelink (sidelink) receiving resource pool of the second terminal device. shift.

6. The method as described in Note 2, wherein,

The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The Kth side link time slot (slot) in the side link sending resource pool of , K is a natural number.

7. The method as described in Note 6, wherein,

K is 1.

8. The method as described in Note 2, wherein,

The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The side link receiving the Lth side link time slot (slot) in the resource pool, L is a natural number.

9. The method as described in Note 8, wherein,

L is 1.

10. The method as described in Note 2, wherein,

The second paging opportunity is obtained by calculating parameters,

Wherein, the parameters used for calculating the second paging occasion are not exactly the same as the parameters used for calculating the first paging occasion.

11. The method as described in appendix 10, wherein,

The parameters used to calculate the second paging opportunity include at least one of the following: a paging discontinuous reception cycle, the number of paging radio frames in the paging discontinuous reception cycle, and the number of paging opportunities of the paging radio frame and determine the offset value of the paging radio frame.

12. The method as described in appendix 10, wherein,

Among the parameters used to calculate the second paging occasion,

The unit of the paging discontinuous reception cycle (paging DRX cycle) is the uplink time slot, or the unit of the side link time slot.

13. The method as described in appendix 10, wherein,

The parameters for calculating the second paging occasion are configured by the network device, or are pre-configured, or are configured by the first terminal device.

14. The method according to any one of Supplements 1 to 13, wherein,

The first paging occasion occurs repeatedly in the time domain,

There is more than one second paging opportunity after each first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion,

Physical downlink sharing indicated by a Physical Downlink Control Channel (PDCCH) after the first paging occasion when the first terminal device receives the first paging message or during the first paging occasion by the second terminal device In more than one second paging occasion following the channel (PDSCH), paging listening is performed.

15. The method according to any one of Supplements 1 to 14, wherein,

The second paging occasions corresponding to the at least two second terminal devices are completely overlapped, partially overlapped or not overlapped in the time domain.

16. The method according to any one of Supplements 1 to 15, wherein,

When the second paging message is not successfully received,

The second terminal device performs paging monitoring at the next PSCCH monitoring occasion (PSCCH monitoring occasion) or the next side link transmission resource, or, the second terminal device performs paging monitoring after the next first paging occasion Paging monitoring is performed at the time of calling.

17. The method according to any one of Supplements 1 to 16, wherein,

The length of the second paging occasion is related to the SSB or reference signal in the side link, and/or equal to X time slots or PSCCH monitoring occasions (PSCCH monitoring occasion), where X is a natural number.

18. The method according to any one of Supplements 1 to 17, wherein,

The first paging occasion is a paging occasion corresponding to the second terminal device on the Uu interface.

Claims (20)

A device for sending and receiving signals, applied to a first terminal device, comprising a first transceiver unit configured to: Listening to the first paging occasion, receiving the first paging message sent by the network device; and Sending a second paging message and/or control information related to the second paging message to a second terminal device (remote UE) at a second paging occasion, where the second paging occasion is located at the first After the paging occasion. The apparatus of claim 1, wherein, The second paging occasion is determined according to the first paging occasion. The apparatus of claim 2, wherein, The second paging occasion has a predetermined time offset relative to the first paging occasion or a physical downlink shared channel (PDSCH) indicated by a physical downlink control channel (PDCCH) in the first paging occasion. The apparatus of claim 3, wherein, The time offset is configured by the network device, or is pre-configured, or is configured by the second terminal device. The apparatus of claim 2, wherein, The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The Kth side link time slot (slot) in the side link sending resource pool of , K is a natural number. The apparatus of claim 2, wherein, The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The side link receiving the Lth side link time slot (slot) in the resource pool, L is a natural number. The apparatus of claim 2, wherein, The second paging opportunity is obtained by calculating parameters, Wherein, the parameters used for calculating the second paging occasion are not exactly the same as the parameters used for calculating the first paging occasion. The apparatus of claim 7, wherein, The parameters used to calculate the second paging opportunity include at least one of the following parameters: paging discontinuous reception period, the number of paging radio frames in the paging discontinuous reception period, and the paging occasion of the paging radio frame and determine the offset value of the paging radio frame. The apparatus of claim 7, wherein, The parameters used for calculating the second paging occasion are configured by the network device, or are pre-configured, or are configured by the second terminal device. The apparatus of claim 1, wherein, The first paging occasion occurs repeatedly in the time domain, There is more than one second paging opportunity after each first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion, After the first terminal device receives the first paging occasion of the first paging message or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion In more than one second paging occasion, sending the second paging message and/or control information related to the second paging message to a second terminal device (remote UE). The apparatus of claim 1, wherein, The first paging occasion is a paging occasion corresponding to the second terminal device on the Uu interface. An apparatus for transmitting and receiving signals, applied to a second terminal device, comprising a second transceiver unit configured to: Monitoring the second paging opportunity, receiving the second paging message sent by the first terminal device (relay UE) and/or the control information related to the second paging message, the second paging occasion is located after the first paging occasion in the time domain, The first timing is the timing when the first terminal device receives the first paging message. The apparatus of claim 12, wherein, The second paging occasion is determined according to the first paging occasion. The apparatus of claim 13, wherein, The second paging occasion has a predetermined time offset relative to the first paging occasion or a physical downlink shared channel (PDSCH) indicated by a physical downlink control channel (PDCCH) in the first paging occasion. The apparatus of claim 14, wherein, The time offset is configured by the network device, or is pre-configured, or is configured by the first terminal device. The apparatus of claim 12, wherein, The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The Kth side link time slot (slot) in the side link sending resource pool of , K is a natural number. The apparatus of claim 12, wherein, The second paging occasion is after the first paging occasion or after the physical downlink shared channel (PDSCH) indicated by the physical downlink control channel (PDCCH) in the first paging occasion. The side link receiving the Lth side link time slot (slot) in the resource pool, L is a natural number. The apparatus of claim 12, wherein, The second paging occasion is obtained by calculating parameters, where the parameters used for calculating the second paging occasion are not exactly the same as the parameters used for calculating the first paging occasion. The apparatus of claim 18, wherein, The parameters used to calculate the second paging opportunity include at least one of the following: a paging discontinuous reception cycle, the number of paging radio frames in the paging discontinuous reception cycle, and the number of paging opportunities of the paging radio frame and determine the offset value of the paging radio frame. A communication system, comprising a network device, a first terminal device and a second terminal device, The first terminal equipment includes the device for sending and receiving signals according to any one of claims 1-11, The second terminal equipment includes the device for sending and receiving signals according to any one of claims 12-19.

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