Patent Application
20230422144
The present application relates to the field of communication technologies, and in particular, to methods and apparatuses for message notification, a user equipment (UE), a relay UE, and a storage medium.
In order to extend network coverage, a solution in which a UE-to-Network relay is introduced is provided. For the UE-to-Network relay scenario, a remote UE needs to be acknowledged of a public land mobile network (PLMN) that corresponds to a cell connected by the remote UE via a relay UE. In the traditional mechanism, the relay UE is required to forward broadcast messages from a network, such as a system information block type 1 (SIB1) message which is carrying the PLMN. However, the forwarding of the system message is independent of a relay discovery message, which cannot guarantee that the remote UE is able to receive the system message when receiving the relay discovery message and the remote UE performs relay selection/reselection before the PLMN information is obtained, which increases delay for relay selection/reselection and may even cause service interruption.
Embodiments of the present application provide methods and apparatuses for message notification, a user equipment (UE), a relay UE, and a storage medium, which solve the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to a relay UE after a remote UE receives related messages transmitted by the relay UE.
Embodiments of the present application provide the following solutions.
An embodiment of the present application provides a method for message notification, applied to a user equipment (UE), including:
In an embodiment,
In an embodiment, the message transmitted by a relay UE includes any one of:
In an embodiment, the receiving the message transmitted by the relay UE, where the message carries PLMN information, includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In an embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader is set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In an embodiment, the explicitly carrying the PLMN information in the SCI transmitted by the relay UE includes at least one of:
In an embodiment, the method further includes at least one of the following steps:
In an embodiment, for the relay UE meeting the preset condition, the determining the PLMN corresponding to the serving cell of the relay UE, and performing relay UE selection and/or relay UE reselection based on the PLMN, includes:
In an embodiment, the preset condition includes at least one of:
a channel quality of a sidelink interface between a UE and a relay UE being greater than a first threshold; or
An embodiment of the present application provides a method for message notification, applied to a relay UE, including:
In an embodiment,
In an embodiment, the message transmitted by the relay UE includes any one of:
In an embodiment, the transmitting the message to the UE, the message carrying the PLMN information, includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE includes any one of:
In an embodiment, the explicitly carrying the PLMN information in a MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In an embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader is set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In an embodiment, the explicitly carrying the PLMN information in the SCI transmitted by the relay UE includes at least one of:
An embodiment of the present application provides an apparatus for message notification, applied to a user equipment (UE), including:
An embodiment of the present application provides an apparatus for message notification, applied to a relay UE, including:
An embodiment of the present application provides a user equipment (UE), including a processor and a memory storing a computer program executable by the processor, and the computer program, when executed by the processor, causes the UE to perform the following steps:
In an embodiment,
In an embodiment, the message transmitted by the relay UE includes any one of:
In an embodiment, the receiving the message transmitted by a relay UE, where the message carries PLMN information, includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In an embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader is set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In an embodiment, the explicitly carrying the PLMN information in the SCI transmitted by the relay UE includes at least one of:
In an embodiment, the computer program, when executed by the processor, further causes the UE to perform at least one of the following steps:
In an embodiment, for the relay UE meeting the preset condition, the determining the PLMN corresponding to the serving cell of the relay UE, and performing relay UE selection and/or relay UE reselection based on the PLMN, includes:
In an embodiment, the preset condition includes at least one of:
An embodiment of the present application provides a relay UE, including a processor and a memory storing a computer program executable on the processor, and the computer program, when executed by the processor, causes the relay UE to perform the following steps of:
In an embodiment,
In an embodiment, the message transmitted by the relay UE includes any one of:
In an embodiment, the transmitting the message to the UE, the message carrying the PLMN information, includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In an embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader is set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In an embodiment, the explicitly carrying the PLMN information in the SCI transmitted by the relay UE includes at least one of:
An embodiment of the present application provides a non-transitory computer readable storage medium storing a computer program that causes, when executed by a processor, the processor to perform the steps of the methods for message notification described above.
By the methods and apparatuses for message notification, the UE, the relay UE, and the storage medium according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, that is, the PLMN can be determined without forwarding broadcast messages from the network through the relay UE, and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
In order to clearly illustrate solutions according to the embodiments of the present application, the drawings used in the descriptions of the embodiments are briefly described below. The drawings in the following description are some embodiments of the present application.
The solutions according to the embodiments of the present application are clearly described in the following with reference to the accompanying drawings in the embodiments of the present application. These embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
In an embodiment, in order to extend network coverage, a solution is to introduce a UE-to-Network relay (hereinafter referred to as a relay). A relay may be a UE having a relaying function, where an interface between the relay and the network is a Uu interface, and an interface between the relay and a remote UE is a direct communication interface. A link between the relay and the network may be referred to as a backhaul link (BH) for the remote UE. After the relay is introduced, in order to simplify the description, the following terms are introduced:
There are currently three communication modes: (1) a traditional cellular network communication mode; (2) a direct communication mode; and (3) a relay communication mode.
For (1) the traditional cellular network communication mode, as shown in
For (2) the direct communication mode, as shown in
For (3) relay communication mode, a relay UE is introduced to extend network coverage. The relay UE may be a UE having a relaying function. For UE-to-Network relay, an interface between the relay and the network is a Uu interface, and an interface between the relay and a remote UE is a direct communication interface (also called sidelink interface or PC5 interface). A link between the relay and the network may be referred to as a backhaul link for the remote UE. The schematic diagram of the UE-to-Network relay is shown in
The structure of a sidelink (SL) medium access control (MAC) protocol data unit (PDU) is explained below with reference to
It should be noted that for the UE-to-Network relay scenario, the remote UE needs to obtain PLMN corresponding to the cell connected to the remote UE through the relay UE. In the traditional mechanism, the relay UE is required to forward broadcast messages from a network, such as a system information block type 1 (SIB1) message carrying the PLMN. However, the forwarding of the system message is independent of a relay discovery message, it fails to guarantee that the remote UE is able to receive the system message when receiving the relay discovery message, and the remote UE performs relay selection/reselection until the PLMN information is obtained, which increases delay for relay selection/reselection and may even cause service interruption. Embodiments of the present application provide a method for message notification, in which PLMN information corresponding to a cell connected to the relay UE can be directly indicated during the procedure of transmitting, by the relay UE, the message related to relay, which solve the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased. Methods and apparatuses for message notification, a UE, a relay UE, and a storage medium according to the present application are explained and described in detail below in conjunction with embodiments.
The methods and the apparatuses are based on the same conception. Since the principles of the methods and the apparatuses to solve the problems are similar, the implementation of the apparatuses and methods can be referred to each other, and the similar part is not repeated.
In addition, the solutions according to the embodiments of the present application may be applicable to various systems, especially 5G systems. For example, the applicable systems may include a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a long term evolution advanced (LTE-A) system, a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, etc. Each of these various systems includes a UE and a network device, and may further include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), and the like.
The terminal device in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the names of the terminal device may be different. For example, the terminal device may be called as user equipment (UE). A radio terminal device can communicate with one or more core networks (CNs) via a radio access network (RAN), and the radio terminal device can be a mobile terminal device, such as a mobile phone (or cellular phone) or a computer with mobile terminal device, e.g., a portable mobile device, a pocket-sized mobile device, a hand-held mobile device, a computer-built mobile device or a vehicle-mounted mobile device, which exchange language and/or data with the radio access network. For example, a personal communication service (PCS) phone, a radio phone, a session initiated protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) and other devices. A radio terminal device may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, and a user device, which are not limited in the embodiments of the present application. Since the terminal device and other network devices (such as core network device, access network device (i.e. network side device)) together form a network that can support communication, the terminal device may be regarded as a network device in the present application.
The network device in the embodiments of the present application may be a base station, and the base station may include multiple cells for serving terminals, or may be a central unit (CU) or a distributed unit (DU). Depending on the specific application, the network device may be called an access point, or may be a device in the access network that communicates with radio terminal device through one or more sectors on the air interface, or other names. Network device can be used to exchange received air frames with internet protocol (IP) packets, and act as a router between radio terminal device and the rest of the access network, where the rest of the access network may include an IP communication network. The network devices may also coordinate attribute management for the air interface. For example, the network device in the embodiments of the present application may be a base transceiver station (BTS) in a global system for mobile communications (GSM) or a code division multiple access (CDMA), may be a node B in a wide-band code division multiple access (WCDMA), may be an evolutional node B (eNB or e-Node B) in a long term evolution (LTE) system, may be a 5G base station (gNB) in 5G network architecture (next generation system), or may be a home evolved node B (HeNB), a relay node, a femto, a pico base station (pico), etc., which are not limited in the embodiments of the present application. In some network structures, a network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may be geographically separated.
In the embodiments of the present application, the term “and/or” describes a related relationship of associated objects, and indicates that there may be three kinds of relationships. For example, A and/or B may represent that A exists alone, A and B exist simultaneously, and B exists alone. Character “I” generally indicates that the associated objects have an “or” relationship.
Furthermore, it should be noted that “one embodiment” or “an embodiment” throughout the specification means that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Thus, “in one embodiment” or “in an embodiment” throughout this specification does not necessarily refer to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.
The present application is described below in detail.
In the step 101, the UE may determine the PLMN corresponding to the serving cell of the relay UE based on the message transmitted by the relay UE to the UE since the message transmitted by the relay UE to the UE directly carries the PLMN information and the PLMN information is used for indicating the PLMN corresponding to the serving cell of the relay UE. As such, the PLMN is determined without forwarding broadcast messages from the network through the relay UE and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to the cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
In the step 101, for example, the message transmitted by the relay UE is a message related to relay discovery. The message related to relay discovery may include a relay discovery message and/or a response message corresponding to a relay discovery message, which is not limited in this embodiment.
Step 102, determining, based on the message, a PLMN corresponding to the serving cell of the relay UE.
In the step 102, the UE may directly determine, based on the message transmitted by the relay UE, the PLMN corresponding to the serving cell of the relay UE. It should be noted that in the present embodiment, the PLMN information corresponding to a cell connected to the relay UE can be directly indicated during the procedure of the relay UE transmits a message related to relay, as such, the UE can directly determine, based on the message related to relay transmitted by the relay UE, the PLMN corresponding to the serving cell of the relay UE, and then a problem of delay for relay selection/reselection or service interruption caused by asynchronization between the message related to relay discovery and system information block (SIB) indicating the PLMN is avoided.
In order to better illustrate the solutions according to the embodiments of the present application, the method for determining the PLMN corresponding to the serving cell of the relay UE in the related art is introduced below for comparison. In the traditional method for determining the PLMN corresponding to the serving cell of the relay UE, the relay UE is required to forward broadcast messages from a network, such as a system information block type 1 (SIB1) message carrying the PLMN. However, the forwarding of the system message is independent of a relay discovery message, it fails to guarantee that the remote UE is able to receive the system message when receiving the message related to relay discovery, and the remote UE performs relay selection/reselection until the PLMN information is obtained, which increases delay for relay selection/reselection and may even cause service interruption. In the present application, the PLMN information corresponding to a cell connected to the relay UE can be directly indicated during the procedure of the relay UE transmits message related to relay, as such, the UE can directly determine, based on the message related to relay transmitted by the relay UE, the PLMN corresponding to the serving cell of the relay UE, and then a problem of delay for relay selection/reselection or service interruption caused by asynchronization between the message related to relay discovery and SIB indicating the PLMN is avoided.
By the method for message notification according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, that is, the PLMN can be determined without forwarding broadcast messages from the network through the relay UE, and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
Based on the above embodiment, in an embodiment,
In the present embodiment, various implementations of PLMN information are shown to meet requirements of various service scenarios.
Based on the above embodiments, in the present embodiment, the message transmitted by the relay UE includes any one of:
In the present embodiment, the message transmitted by the relay UE may be a message related to relay discovery. The message related to relay discovery may be the relay discovery message, or the response message corresponding to the relay discovery message, or the SCI that allocates a resource for the relay discovery message or the response message corresponding to the relay discovery message. In the present embodiment, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN carried in the relay discovery message, or the response message corresponding to the relay discovery message, or the SCI that allocates a resource for the relay discovery message or the response message corresponding to the relay discovery message, which can implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the receiving the message transmitted by the relay UE, where the message carries PLMN information, includes any one of:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, there are two carrying modes including an explicit carrying mode and an implicit carrying mode. For the explicit carrying mode, the PLMN information is explicitly carried in the message transmitted by the relay UE. For the implicit carrying mode, the PLMN information is implicitly carried based on the resource used by the message transmitted by the relay UE. Regardless of the explicit carrying mode or the implicit carrying mode, the PLMN corresponding to the serving cell of the relay UE can be determined based on the message transmitted by the relay UE, that is, the PLMN can be determined without forwarding broadcast messages from the network through the relay UE, and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE, includes any one of:
In the present embodiment, the explicitly carrying the PLMN information may be implemented by:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the SCI transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in a MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In the present embodiment, in case that the PLMN information is explicitly carried in the MAC PDU carrying the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the MAC PDU carrying the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader is set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In the present embodiment, for the scheme 1 of explicitly carrying the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE, a reserved bit in the SL-SCH MAC subheader may be used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader may be set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information. For the scheme 2 of explicitly carrying the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE, a reserved bit in the MAC subheader corresponding to the SL MAC subPDU may be used for indicating whether the MAC subheader includes the PLMN information. By any of these two schemes, the UE may determine whether there is PLMN information based on the reserved bit or the V field, as such, the processing efficiency of the UE is increased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in the SCI transmitted by the relay UE, includes at least one of:
In the present embodiment, in case that the PLMN information is explicitly carried in the SCI transmitted by the relay UE, there may be multiple implementations. For example, in case that the SCI is separated into the first-stage SCI and the second-stage SCI, the PLMN information may be only explicitly carried in the first-stage SCI; or the PLMN information may be only explicitly carried in the second-stage SCI; or the PLMN information may be explicitly carried in both the first-stage SCI and the second-stage SCI. In the present embodiment, the PLMN information is explicitly carried in the SCI transmitted by the relay UE, and the embodiments of the present application can be achieved.
Based on the foregoing embodiment, in the present embodiment, the method further includes at least one of the following steps:
In the present embodiment, after obtaining the PLMN information, the UE may perform, using the PLMN information, at least one of the following operations:
In the present embodiment, after the UE obtains the PLMN information, operations performed by the UE using the PLMN information are protected. The operations performed by using the PLMN information may include two cases: (1) transmitting the PLMN to the NAS layer for the UE for assisting the NAS layer for the UE to perform PLMN selection; and (2) performing relay UE selection and/or relay UE reselection based on the PLMN. Any of them can achieve an objective of communication.
Based on the foregoing embodiments, in the present embodiment, for the relay UE meeting the preset condition, the determining the PLMN corresponding to the serving cell of the relay UE, and performing relay UE selection and/or relay UE reselection based on the PLMN, includes:
In the present embodiment, in case that the UE performs relay UE selection and/or relay UE reselection, the UE may select, based on the PLMN corresponding to the serving cell of the relay UE, a relay UE of which a serving cell corresponding to a PLMN consistent with a PLMN selected by the UE, which increases the processing efficiency of the UE, and avoids the problem of service interruption caused by the inconsistency of selected PLMN.
Based on the foregoing embodiments, in the present embodiment, the preset condition includes at least one of the followings:
In the present embodiment, before the PLMN corresponding to the serving cell of the relay UE is determined, it is first determined whether the relay UE meets the preset condition, and in case that the relay UE meets the preset condition, for the relay UE meeting the preset condition, the PLMN corresponding to the serving cell of the relay UE is determined, which improves the processing efficiency of the UE, and avoids determining the PLMN transmitted by the relay UE that does not meet the communication conditions as the basis for subsequent processing.
step 201, transmitting a message to a user equipment (UE), where the message carries public land mobile network (PLMN) information, the PLMN information is PLMN information corresponding to a serving cell of the relay UE and the message is used to assist the UE to determine a PLMN corresponding to the serving cell of the relay UE.
In the step 201, the UE may determine the PLMN corresponding to the serving cell of the relay UE based on the message transmitted by the relay UE to the UE since the message transmitted by the relay UE to the UE directly carries the PLMN information and the PLMN information is used for indicating the PLMN corresponding to the serving cell of the relay UE. As such, the PLMN is determined without forwarding broadcast messages from the network through the relay UE and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to the cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
In the step 201, for example, the message transmitted by the relay UE is a message related to relay discovery. The message related to relay discovery may include a relay discovery message and/or a response message corresponding to a relay discovery message, which is not limited in this embodiment.
In the step 201, the UE may directly determine, based on the message transmitted by the relay UE, the PLMN corresponding to the serving cell of the relay UE. It should be noted that in the present embodiment, the PLMN information corresponding to a cell connected to the relay UE can be directly indicated during the procedure of the relay UE transmits message related to relay, as such, the UE can directly determine, based on the message related to relay transmitted by the relay UE, the PLMN corresponding to the serving cell of the relay UE, and then a problem of delay for relay selection/reselection or service interruption caused by asynchronization between the message related to relay discovery and system information block (SIB) indicating the PLMN is avoided.
In order to better illustrate the solutions according to the embodiments of the present application, the method for determining the PLMN corresponding to the serving cell of the relay UE in the related art is introduced below for comparison. In the traditional method for determining the PLMN corresponding to the serving cell of the relay UE, the relay UE is required to forward broadcast messages from a network, such as a system information block type 1 (SIB1) message carrying the PLMN. However, the forwarding of the system message is independent of a relay discovery message, it fails to guarantee that the remote UE is able to receive the system message when receiving the message related to relay discovery, and the remote UE performs relay selection/reselection until the PLMN information is obtained, which increases delay for relay selection/reselection and may even cause service interruption. In the present application, the PLMN information corresponding to a cell connected to the relay UE can be directly indicated during the procedure of the relay UE transmits message related to relay, as such, the UE can directly determine, based on the message related to relay transmitted by the relay UE, the PLMN corresponding to the serving cell of the relay UE, and then a problem of delay for relay selection/reselection or service interruption caused by asynchronization between the message related to relay discovery and SIB indicating the PLMN is avoided.
By the method for message notification according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, that is, the PLMN can be determined without forwarding broadcast messages from the network through the relay UE, and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
Based on the above embodiment, in an embodiment,
In the present embodiment, various implementations of PLMN information are shown to meet requirements of various service scenarios.
Based on the above embodiments, in the present embodiment, the message transmitted by the relay UE includes any one of:
In the present embodiment, the message transmitted by the relay UE may be a message related to relay discovery. The message related to relay discovery may be the relay discovery message, or the response message corresponding to the relay discovery message, or the SCI that allocates a resource for the relay discovery message or the response message corresponding to the relay discovery message. In the present embodiment, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN carried in the relay discovery message, or the response message corresponding to the relay discovery message, or the SCI that allocates a resource for the relay discovery message or the response message corresponding to the relay discovery message, which can implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the transmitting the message to the UE, where the message carries PLMN information, includes any one of:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, there are two carrying modes including an explicit carrying mode and an implicit carrying mode. For the explicit carrying mode, the PLMN information is explicitly carried in the message transmitted by the relay UE. For the implicit carrying mode, the PLMN information is implicitly carried based on the resource used by the message transmitted by the relay UE. Regardless of the explicit carrying mode or the implicit carrying mode, the PLMN corresponding to the serving cell of the relay UE can be determined based on the message transmitted by the relay UE, that is, the PLMN can be determined without forwarding broadcast messages from the network through the relay UE, and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE, includes any one of:
In the present embodiment, the explicitly carrying the PLMN information may be implemented by:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the SCI transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in a MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In the present embodiment, in case that the PLMN information is explicitly carried in the MAC PDU carrying the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the MAC PDU carrying the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader is set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In the present embodiment, for the scheme 1 of explicitly carrying the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE, a reserved bit in the SL-SCH MAC subheader may be used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader may be set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information. For the scheme 2 of explicitly carrying the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE, a reserved bit in the MAC subheader corresponding to the SL MAC subPDU may be used for indicating whether the MAC subheader includes the PLMN information. By any of these two schemes, the UE may determine whether there is PLMN information based on the reserved bit or the V field, as such, the processing efficiency of the UE is increased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in SCI transmitted by the relay UE, includes at least one of:
In the present embodiment, in case that the PLMN information is explicitly carried in the SCI transmitted by the relay UE, there may be multiple implementations. For example, in case that the SCI is separated into the first-stage SCI and the second-stage SCI, the PLMN information may be only explicitly carried in the first-stage SCI; or the PLMN information may be only explicitly carried in the second-stage SCI; or the PLMN information may be explicitly carried in both the first-stage SCI and the second-stage SCI. In the present embodiment, the PLMN information is explicitly carried in the SCI transmitted by the relay UE, and the embodiments of the present application can be achieved.
The present application is described below through some embodiments.
As shown in
In the step 1, the relay UE first performs PLMN selection to determine the PLMN to be used, and then performs cell selection to determine the cell to be connected.
In the step 2, the SCI is used to schedule resources used for a relay discovery message transmitted by the relay UE in step 3.
In the step 3, the relay discovery message is carried by an SL MAC PDU on the air interface, and the PLMN information corresponding to the cell connected to the relay UE is carried in the SL-SCH MAC subheader corresponding to the SL MAC PDU.
An example of a format of the SL-SCH MAC subheader is shown in
The combination of MCC and MNC represents the PLMN information.
In addition, a reserved bit or a preset value of the V field in the SL-SCH MAC subheader can be used to indicate whether the SL-SCH MAC subheader includes the PLMN information corresponding to the cell connected to the relay UE.
After receiving the SL MAC PDU, the remote UE may determine the PLMN information corresponding to the cell connected to the relay UE based on the PLMN information carried in the SL-SCH MAC subheader.
After obtaining the PLMN information, the remote UE may perform, using the PLMN information, at least one of the following operations.
(1) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then reports discovery PLMNs meeting preset conditions to the UE NAS layer to perform PLMN selection.
(2) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then performs relay selection and/or relay reselection based on the PLMN information selected by itself.
The “preset condition” may be, but not limited to, at least one of:
As shown in
In the step 1, the relay UE first performs PLMN selection to determine the PLMN to be used, and then performs cell selection to determine the cell to be connected.
In the step 2, the SCI is used to schedule resources used for a relay discovery message transmitted by the relay UE in step 3.
In the step 3, the relay discovery message is carried by an SL MAC PDU on the air interface, and the PLMN information corresponding to the cell connected to the relay UE is carried in the MAC subheader corresponding to the MAC subPDU in the SL MAC PDU.
An example of a format of the MAC subheader corresponding to the MAC subPDU is shown in
The combination of MCC and MNC represents the PLMN information.
In addition, a reserved bit in the MAC subheader corresponding to the MAC subPDU can be used to indicate whether the MAC subheader corresponding to the MAC subPDU includes the PLMN information corresponding to the cell connected to the relay UE.
After receiving the SL MAC PDU, the remote UE may determine the PLMN information corresponding to the cell connected to the relay UE based on the PLMN information carried in the MAC subheader corresponding to the MAC subPDU. After obtaining the PLMN information, the remote UE may perform, using the PLMN information, at least one of the following operations.
(1) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then reports discovery PLMNs meeting preset conditions to the UE NAS layer to perform PLMN selection.
(2) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then performs relay selection and/or relay reselection based on the PLMN information selected by itself.
The “preset condition” may be, but not limited to, at least one of:
As shown in
In the step 1, the relay UE first performs PLMN selection to determine the PLMN to be used, and then performs cell selection to determine the cell to be connected.
In the step 2, the SCI is used to schedule resources used for a relay discovery message transmitted by the relay UE in step 3.
Since different PLMNs correspond to different sidelink interface resources, the PLMN information corresponding to the cell connected to the relay UE can be implicitly determined through one or more resources for the transmission of a message related to relay discovery.
After determining the PLMN information corresponding to the cell connected to the relay UE, the remote UE may perform, using the PLMN information, at least one of the following operations.
(1) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then reports discovery PLMNs meeting preset conditions to the UE NAS layer to perform PLMN selection.
(2) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then performs relay selection and/or relay reselection based on the PLMN information selected by itself.
The “preset condition” may be, but not limited to, at least one of:
As shown in
In the step 1, the relay UE first performs PLMN selection to determine the PLMN to be used, and then performs cell selection to determine the cell to be connected.
In the step 2, the SCI is used to schedule resources used for a relay discovery message transmitted by the relay UE in step 3.
The carrying the PLMN information corresponding to the cell connected to the relay UE in the SCI may include carrying the PLMN information corresponding to the cell connected to the relay UE in a first-stage SCI (PSCCH) or in a second-stage SCI (PSSCH).
After determining the PLMN information corresponding to the cell connected to the relay UE, the remote UE may perform, using the PLMN information, at least one of the following operations.
(1) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then reports discovery PLMNs meeting preset conditions to the UE NAS layer to perform PLMN selection.
(2) The remote UE determines the PLMN information corresponding to the cell connected to each relay UE based on the relay discovery messages transmitted by the relay UEs, and then performs relay selection and/or relay reselection based on the PLMN information selected by itself.
The “preset condition” may be, but not limited to, at least one of:
In the present application, the PLMN information corresponding to the cell connected to the relay UE is explicitly carried in the MAC PDU associated with relay discovery or in the SCI transmitted by the relay UE; or the PLMN information corresponding to the cell connected to the relay UE is implicitly carried in one or more resources for the transmission of a message related to relay discovery by the relay UE. Compared with the traditional mechanism, the method for PLMN notification according to the present application has the following advantages: it can be ensured that the remote UE can determine PLMN corresponding to the cell connected to the relay UE transmitting a relay message while receiving the message related to relay discovery, which can decrease workload for developing standard, reduce unnecessary sidelink broadcasts, and save resources.
Based on the above embodiment, in an embodiment,
In the present embodiment, various implementations of PLMN information are shown to meet requirements of various service scenarios.
Based on the above embodiments, in the present embodiment, the message transmitted by the relay UE includes any one of:
In the present embodiment, the message transmitted by the relay UE may be a message related to relay discovery. The message related to relay discovery may be a relay discovery message, or a response message corresponding to a relay discovery message. In the present embodiment, the PLMN corresponding to the serving cell of the relay UE may be directly determined based on the PLMN carried in the relay discovery message, or the response message corresponding to the relay discovery message, which can implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the receiving the message transmitted by the relay UE, where the message carries PLMN information, includes any one of:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, there are two carrying modes including an explicit carrying mode and an implicit carrying mode. For the explicit carrying mode, the PLMN information is explicitly carried in the message transmitted by the relay UE. For the implicit carrying mode, the PLMN information is implicitly carried based on the resource used by the message transmitted by the relay UE. Regardless of the explicit carrying mode or the implicit carrying mode, the PLMN corresponding to the serving cell of the relay UE can be determined based on the message transmitted by the relay UE, that is, the PLMN can be determined without forwarding broadcast messages from the network through the relay UE, and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE, includes any one of:
In the present embodiment, the explicitly carrying the PLMN information may be implemented by:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the SCI transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in a MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In the present embodiment, in case that the PLMN information is explicitly carried in the MAC PDU carrying the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the MAC PDU carrying the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader is set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In the present embodiment, for the scheme 1 of explicitly carrying the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE, a reserved bit in the SL-SCH MAC subheader may be used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader may be set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information. For the scheme 2 of explicitly carrying the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE, a reserved bit in the MAC subheader corresponding to the SL MAC subPDU may be used for indicating whether the MAC subheader includes the PLMN information. By any of these two schemes, the UE may determine whether there is PLMN information based on the reserved bit or the V field, as such, the processing efficiency of the UE is increased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in the SCI transmitted by the relay UE, includes at least one of:
In the present embodiment, in case that the PLMN information is explicitly carried in the SCI transmitted by the relay UE, there may be multiple implementations. For example, in case that the SCI is separated into the first-stage SCI and the second-stage SCI, the PLMN information may be only explicitly carried in the first-stage SCI; or the PLMN information may be only explicitly carried in the second-stage SCI; or the PLMN information may be explicitly carried in both the first-stage SCI and the second-stage SCI. In the present embodiment, the PLMN information is explicitly carried in the SCI transmitted by the relay UE, and the embodiments of the present application can be achieved.
Based on the above embodiments, in the present embodiment, the apparatus further includes a processing device, used to perform at least one of the following steps:
In the present embodiment, after obtaining the PLMN information, the UE may perform, using the PLMN information, at least one of the following operations:
In the present embodiment, after the UE obtains the PLMN information, operations performed by the UE using the PLMN information are protected. The operations performed by using the PLMN information may include two cases: (1) transmitting the PLMN to the NAS layer for assisting the NAS layer for the UE to perform PLMN selection; and (2) performing relay UE selection and/or relay UE reselection based on the PLMN. Any of them can achieve an objective of communication.
Based on the foregoing embodiments, in the present embodiment, for the relay UE meeting the preset condition, the determining the PLMN corresponding to the serving cell of the relay UE, and performing relay UE selection and/or relay UE reselection based on the PLMN, includes:
In the present embodiment, in case that the UE performs relay UE selection and/or relay UE reselection, the UE may select, based on the PLMN corresponding to the serving cell of the relay UE, a relay UE of which a serving cell corresponding to a PLMN consistent with a PLMN selected by the UE, which increases the processing efficiency of the UE, and avoids the problem of service interruption caused by the inconsistency of selected PLMN.
Based on the foregoing embodiments, in the present embodiment, the preset condition includes at least one of the followings:
In the present embodiment, before the PLMN corresponding to the serving cell of the relay UE is determined, it is first determined whether the relay UE meets the preset condition, and in case that the relay UE meets the preset condition, for the relay UE meeting the preset condition, the PLMN corresponding to the serving cell of the relay UE is determined, which improves the processing efficiency of the UE, and avoids determining the PLMN transmitted by the relay UE that does not meet the communication conditions as the basis for subsequent processing.
It should be noted here that the apparatus can implement all the method steps of the embodiment of the method for message notification applied to the UE and can achieve the same effect, so details are not repeated here.
Based on the above embodiment, in an embodiment,
In the present embodiment, various implementations of PLMN information are shown to meet requirements of various service scenarios.
Based on the above embodiments, in the present embodiment, the message transmitted by the relay UE includes any one of:
In the present embodiment, the message transmitted by the relay UE may be a message related to relay discovery. The message related to relay discovery may be a relay discovery message or a response message corresponding to a relay discovery message. In the present embodiment, the PLMN corresponding to the serving cell of the relay UE may be directly determined based on the PLMN carried in the relay discovery message or the response message corresponding to the relay discovery message, which can implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the transmitting the message to the UE, where the message carries PLMN information, includes any one of:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, there are two carrying modes including an explicit carrying mode and an implicit carrying mode. For the explicit carrying mode, the PLMN information is explicitly carried in the message transmitted by the relay UE. For the implicit carrying mode, the PLMN information is implicitly carried based on the resource used by the message transmitted by the relay UE. Regardless of the explicit carrying mode or the implicit carrying mode, the PLMN corresponding to the serving cell of the relay UE can be determined based on the message transmitted by the relay UE, that is, the PLMN can be determined without forwarding broadcast messages from the network through the relay UE, and the problem of delay for relay selection/reselection or service interruption caused by inability to determine the PLMN corresponding to a cell connected to the relay UE after a remote UE receives related messages transmitted by the relay UE may be solved. In addition, according to the embodiments of the present application, the PLMN corresponding to the serving cell of the relay UE can be directly determined based on the PLMN information carried in the message transmitted by the relay UE, unnecessary sidelink broadcast can be reduced, resources are saved and workload for developing standard is decreased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE, includes any one of:
In the present embodiment, the explicitly carrying the PLMN information may be implemented by:
In the present embodiment, in case that the PLMN information is carried in the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the SCI transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in a MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In the present embodiment, in case that the PLMN information is explicitly carried in the MAC PDU carrying the message transmitted by the relay UE, one implementation mode may be to explicitly carry the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE and the other implementation mode may be to explicitly carry the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE. Through any of these two implementation modes, the PLMN information can be explicitly carried in the MAC PDU carrying the message transmitted by the relay UE to implement the embodiments of the present application.
Based on the above embodiments, in the present embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a predefined value of a V field in the SL-SCH MAC subheader is used to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In the present embodiment, for the scheme 1 of explicitly carrying the PLMN information in the SL-SCH MAC subheader corresponding to the SL MAC PDU carrying the message transmitted by the relay UE, a reserved bit in the SL-SCH MAC subheader may be used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a V field in the SL-SCH MAC subheader may be set to a preset value to indicate whether the SL-SCH MAC subheader includes the PLMN information. For the scheme 2 of explicitly carrying the PLMN information in the MAC subheader corresponding to the SL MAC subPDU carrying the message transmitted by the relay UE, a reserved bit in the MAC subheader corresponding to the SL MAC subPDU may be used for indicating whether the MAC subheader includes the PLMN information. By any of these two schemes, the UE may determine whether there is PLMN information based on the reserved bit or the V field, as such, the processing efficiency of the UE is increased.
Based on the above embodiments, in the present embodiment, the explicitly carrying the PLMN information in SCI transmitted by the relay UE, includes at least one of:
In the present embodiment, in case that the PLMN information is explicitly carried in the SCI transmitted by the relay UE, there may be multiple implementations. For example, in case that the SCI is separated into the first-stage SCI and the second-stage SCI, the PLMN information may be only explicitly carried in the first-stage SCI; or the PLMN information may be only explicitly carried in the second-stage SCI; or the PLMN information may be explicitly carried in both the first-stage SCI and the second-stage SCI. In the present embodiment, the PLMN information is explicitly carried in the SCI transmitted by the relay UE, and the embodiments of the present application can be achieved.
It should be noted here that the apparatus can implement all the method steps of the embodiment of the method for message notification applied to the relay UE and can achieve the same effect, so details are not repeated here.
In
The processor 1810 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), the processor can also use a multi-core architecture.
The memory 1820 is configured to store a computer program; the transceiver 1800 is configured to transmit and receive data under the control of the processor; the computer program, when executed by the processor 1810, causes the UE to perform the following operations:
In an embodiment,
In an embodiment, the message transmitted by the relay UE includes any one of:
In an embodiment, the receiving the message transmitted by the relay UE, where the message carries PLMN information, includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE includes any one of:
In an embodiment, the explicitly carrying the PLMN information in a MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In an embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a predefined value of a V field in the SL-SCH MAC subheader is used to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In an embodiment, the explicitly carrying the PLMN information in the SCI transmitted by the relay UE includes at least one of:
In an embodiment, the computer program, when executed by the processor 1810, further causes the UE to perform at least one of:
In an embodiment, for the relay UE meeting the preset condition, the determining the PLMN corresponding to the serving cell of the relay UE, and performing relay UE selection and/or relay UE reselection based on the PLMN, includes:
In an embodiment, the preset condition includes at least one of:
It should be noted here that the UE according to the present application can implement all the method steps of the embodiment of the method for message notification applied to the UE and can achieve the same effect, so details are not repeated here.
In
The processor 1910 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), the processor can also use a multi-core architecture.
The memory 1920 is configured to store a computer program; the transceiver 1900 is configured to transmit and receive data under the control of the processor; the computer program, when executed by the processor 1910, causes the relay UE to perform the following operations:
In an embodiment,
In an embodiment, the message transmitted by the relay UE includes any one of:
In an embodiment, the transmitting the message to the UE, the message carrying PLMN information, includes any one of:
In an embodiment, the explicitly carrying the PLMN information in the message transmitted by the relay UE includes any one of:
In an embodiment, the explicitly carrying the PLMN information in a MAC PDU carrying the message transmitted by the relay UE includes at least one of the following schemes:
In an embodiment, for the scheme 1, a reserved bit in the SL-SCH MAC subheader is used for indicating whether the SL-SCH MAC subheader includes the PLMN information or a predefined value of a V field in the SL-SCH MAC subheader is used to indicate whether the SL-SCH MAC subheader includes the PLMN information; and/or
In an embodiment, the explicitly carrying the PLMN information in SCI transmitted by the relay UE includes at least one of:
It should be noted here that the relay UE according to the present application can implement all the method steps of the embodiment of the method for message notification applied to the relay UE and can achieve the same effect, so details are not repeated here.
It should be noted that, the division of units in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
In case that the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the embodiments of the present application in essence or a part of the embodiments that contributes to the related art, or all or part of the embodiments, may be embodied in the form of a software product, which is stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in the respective embodiments of the present application. The storage medium described above includes various media that can store program codes such as USB flash disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.
It should be noted here that the above-mentioned apparatus according to the embodiments of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same effect. The same parts and beneficial effects as the same method embodiments are not repeated here.
An embodiment of the present application provides a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by a processor, causes the processor to perform the steps of the methods described above.
The computer readable storage medium may be any available medium or data storage device that can be accessed by the computer, including but not limited to, a magnetic storage (e.g., a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), optical memory (such as CD, DVD, BD, HVD, etc.), and a semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.
From the foregoing embodiments that the computer readable storage medium stores a computer program, and the computer program is used to cause the processor to perform the steps of methods for message notification.
Embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
The present application is described with reference to flow charts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flow charts and/or block diagrams, and combinations thereof can be implemented by computer-executable instructions. These computer-executable instructions may be provided to processors of a general purpose computer, a special purpose computer, an embedded processor or other programmable data processing device to produce a machine and the instructions executed by the processor of the computer or other programmable data processing device form a means for performing the functions specified in one or more flows in a flowchart and/or one or more blocks of a block diagram.
These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, and the instructions stored in the processor-readable memory may result in a manufacture including instruction means, the instruction means can perform the functions specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process and instructions performed on the computer or other programmable devices provide steps for performing the functions specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
Various modifications and variations can be made to the present application without departing from the scope of the present application. Thus, provided that these modifications and variations of the present application are within the scope of the claims of the present application and their equivalents, the present application is also intended to cover such modifications and variations.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202011412796.3 | Dec 2020 | CN | national |
The present application is a National Stage of International Application No. PCT/CN2021/131363, filed on Nov. 18, 2021, which claims priority to Chinese Patent Application No. 2020114127963 filed on Dec. 3, 2020, entitled “Message Notification Method and Apparatus, Terminal Device, Relay UE, and Storage Medium”, which is hereby incorporated by reference in its entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/131363 | 11/18/2021 | WO |
