Transfer control method, information transmission method, repeater and network device

Abstract

The embodiments of the present invention provide a transmission control method, an information transmission method, a repeater, and a network device, which include a mobile terminal that transitions from an RRC connected state to an unconnected state, where the unconnected state includes an RRC inactive state or an RRC idle state, and a forwarding unit that forwards a signal.

Description

[Technical Field]

[0001] The present invention relates to the field of communications technology. [Background technology]

[0002] Compared with the conventional 3G (third generation mobile communication technology) and 4G (fourth generation mobile communication technology) systems, the 5G (fifth generation mobile communication technology) system provides wider bandwidth and higher data rates, and can support more types of terminals and diverse industrial services.

[0003] Therefore, 5G systems will be deployed in new spectrum in addition to traditional telecommunications spectrum, with frequencies in the new spectrum having significantly higher frequencies than the traditional telecommunications spectrum used by 3G and 4G systems. For example, 5G systems may be deployed in millimeter wave bands (such as 28 GHz, 38 GHz, 60 GHz and above).

[0004] According to the wireless signal propagation rules, the higher the carrier frequency of the wireless signal, the greater the signal fading during propagation. Therefore, in actual deployment, the 5G system needs to strengthen cell coverage compared to traditional 3G and 4G systems. Especially for 5G systems deployed in the millimeter wave band, how to better strengthen the cell coverage of the 5G system has become an urgent issue that needs to be resolved.

[0005] In order to better solve the coverage problem of cellular mobile communication systems in practical deployments, using a radio frequency repeater (RF relay / repeater) to amplify and forward communication signals between terminal equipment (UE) and network devices is a relatively commonly used deployment method. Radio frequency repeaters are relatively widely applied in practical deployments of 3G systems and 4G systems. Generally, a radio frequency repeater is a device that amplifies and forwards signals between devices in the radio frequency domain. In other words, a radio frequency repeater is a non-regenerative relay node that only directly amplifies and forwards all received signals.

[0006] However, conventional radio frequency repeaters cannot exchange information with other devices (e.g., network devices / terminal devices, etc.). Specifically, in terms of reception, conventional radio frequency repeaters do not support measuring / demodulating / decoding transmitted signals, and do not receive signals other than transmitted signals. In terms of transmission, conventional radio frequency repeaters only amplify and transmit signals, but do not support generating signals or transmitting signals generated by themselves. Therefore, the transmission operation of conventional radio frequency repeaters is not controlled by a network (e.g., through a network device, etc.).

[0007] The above description of the background art is merely for the purpose of explaining the configuration of the present invention more clearly and completely, and is provided for the understanding of those skilled in the art. These configurations described in the background art of the present invention should not be construed as being well known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0008] To improve the coverage of 3GPP Rel-18 NR, a network-controlled repeater (NCR) is proposed to forward signals between network equipment and terminal equipment. The NCR can directly communicate with the network equipment via a control link to assist the NCR's forwarding operations.

[0009] The on / off state of a conventional repeater is usually manually configured and cannot dynamically match the data transmission between the network device and the UE. Since data transmission between the network device and the UE is not always performed, if the repeater is on even when the network device is not present and the UE is not transmitting data, unnecessary power consumption increases, interference with other devices may occur, and network throughput may decrease. Therefore, compared to a conventional RF repeater, an NCR needs to have a function to control the on / off of the transmission unit.

[0010] Currently, 3GPP (registered trademark) has agreed to support a method for an NCR to control the on / off state of its forwarding unit based on control information from a network device when the NCR is in a Radio Link Control (RRC) connected state. However, currently, no method has been proposed for controlling the operation of an NCR in a non-RRC connected state.

[0011] In view of at least one of the above problems, embodiments of the present invention provide a transfer control method, an information transmission method, a repeater, and a network device. [Means for solving the problem]

[0012] In one aspect of an embodiment of the present invention, there is provided a repeater including: a mobile terminal that transitions from an RRC connected state to a non-RRC connected state, the non-RRC connected state including an RRC inactive state or an RRC idle state; and a forwarding unit that forwards a signal.

[0013] In another aspect of the embodiment of the present invention, a network device includes a transmitter configured to transmit a first RRC release message and / or other signaling different from the first RRC release message to a mobile terminal of a repeater, the first RRC release message and / or other signaling including one or more of first information, second information, third information, information related to a first timer, first indication information, second indication information, third indication information, and fourth indication information, the first information being used to indicate a cell to be transferred, and the second information being used to indicate a cell to be transferred. the first timer is started when the first RRC release message is received and / or is stopped when an RRC recovery message or an RRC establishment message is received or the first RRC release message is received again; the first indication information is used to indicate a backhaul link beam to be used by the repeater's forwarding unit to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during an RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during a non-RRC connected state; and the second indication information is used to indicate a backhaul link beam to be used by the repeater's forwarding unit to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during a non-RRC connected state. , and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state, the third indication information is dedicated to indicating a backhaul link beam to be used by the forwarding unit of the repeater to perform forwarding, and / or before transitioning to a non-RRC connected state and / or during an RRC connected state, and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during a non-RRC connected state,The network device further includes a fourth instruction information, which is used by the repeater's forwarding unit to indicate an access link beam to be used to perform forwarding, and the fourth instruction information is dedicated to indicating an access link beam to be used by the repeater's forwarding unit to perform forwarding after the repeater's mobile terminal receives the first RRC release message and / or transitions to a non-RRC connected state and / or while the repeater's mobile terminal is in a non-RRC connected state.

[0014] Another aspect of the present invention provides a communication system including the repeater and / or the network device described above.

[0015] One of the advantageous effects of the embodiment of the present invention is as follows: After the repeater transitions to a non-RRC connected state, the repeater forwards a signal, so that the time domain resource / beam corresponding to the on state of the forwarding unit coincides with the time domain resource / beam of data transmission between the network device and the terminal device, thereby saving the power consumption of the repeater, reducing interference, and improving network throughput.

[0016] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail to illustrate ways in which the principles of the present invention can be employed. However, the scope of the present invention is not limited to these embodiments. The present invention encompasses all modifications, alterations, and equivalents within the spirit and scope of the appended claims.

[0017] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may be substituted for features in other embodiments.

[0018] It should be noted that in this text, the term "comprise / have" means the presence of a feature, element, step or component, and does not exclude the presence or addition of one or more other features, elements, steps or components. [Brief explanation of the drawings]

[0019] Elements and features depicted in one drawing and one embodiment of an example of the invention may be combined with elements and features shown in one or more drawings or embodiments, and in the drawings, like reference numerals may indicate corresponding elements in multiple drawings and may indicate corresponding elements used in more than one embodiment.

[0020] The drawings included are used to further understand the embodiments of the present invention, constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the written description, explain the principles of the present invention. Note that the drawings described below are merely some examples of the present invention, and those skilled in the art can easily imagine other drawings based on these drawings. [Figure 1] 1 is a schematic diagram of an example of a communication system according to an embodiment of the present invention; [Figure 2] 1 is a schematic diagram of an example of a transfer control method according to an embodiment of the present invention; [Figure 3] 1 is a schematic diagram of an example of a transfer control method according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram of an example of a transfer control method according to an embodiment of the present invention; [Figure 5] 1 is a schematic diagram of an example of a transfer control method according to an embodiment of the present invention; [Figure 6] 1 is a schematic diagram of an example of a transfer control method according to an embodiment of the present invention; [Figure 7] 1 is a schematic diagram of an example of a repeater according to an embodiment of the present invention; [Figure 8] 1 is a schematic diagram of an example of an information transmission method according to an embodiment of the present invention; [Figure 9] FIG. 2 is a schematic diagram of an example of a network device according to an embodiment of the present invention. [Figure 10] 1 is a schematic diagram of an example of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some of the embodiments in which the principles of the present invention can be adopted are shown. However, the present invention is not limited to the described embodiments. The present invention includes all modifications, variations, and equivalents within the scope of the appended claims. Below, various embodiments of the present invention will be described with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0022] In embodiments of the present invention, the terms "first," "second," etc. are used in titles to distinguish between different elements, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any and all combinations of one or more of the terms listed in the associated list. The terms "comprise," "include," "have," etc. refer to the presence of listed features, elements, elements, or components, but do not exclude the presence or addition of one or more other features, elements, elements, or components.

[0023] In the embodiments of the present invention, the singular forms "one," "the," etc., include the plural and should be understood broadly as "one kind" or "one class," and are not limited to "one." Furthermore, the term "said" should be understood to include both the singular and the plural, unless the context clearly indicates otherwise. Furthermore, the term "described in" should be understood to mean "described at least in part," and the term "based on" should be understood to mean "based at least in part," unless the context clearly indicates otherwise.

[0024] In embodiments of the present invention, the terms "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as, for example, Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0025] Additionally, communications between devices in a communications system may occur according to any stage of communications protocol, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future 5G, New Radio (NR), etc., and / or other currently known or future developed communications protocols.

[0026] In an embodiment of the present invention, the term "network device" refers to a device in a communication system that allows a terminal device to access the communication system and provides a service to the terminal device, and may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobility management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0027] A base station may include, but is not limited to, a Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), IAB donor, etc., as well as a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay, or a low-power node (e.g., femto, pico, etc.). Also, the term "base station" may include some or all of these functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0028] In the embodiments of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to a device that accesses a communication network and receives network services via, for example, a network device. The terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc.

[0029] The terminal device may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smart watch, a digital camera, and the like.

[0030] Also, for example, in a scenario such as the Internet of Things (IoT), the user equipment may be a monitoring or measuring device or apparatus, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0031] 1 is a schematic diagram of an example of an NCR according to an embodiment of the present invention. As shown in FIG. 1, an NCR 102 is disposed between a network device 101 and a terminal device 103. The NCR 102 may include two modules / components: a repeater mobile terminal (NCR-MT) and a repeater forwarding unit (NCR-Fwd). The NCR-Fwd is also referred to as a routing unit (NCR-RU) of an NCR-RU. The NCR-MT is used to communicate with the network device (transmit and receive data), and the NCR-Fwd is used to forward signals transmitted and received between the network device and the terminal device. The NCR-MT and NCR-Fwd are functional entities that may be realized by the same or different hardware modules.

[0032] As shown in FIG. 1 , the NCR of the embodiment of the present invention can have three links: a control link (C-link), a backhaul link (BH link) for forwarding, and an access link (AC link (also referred to as NCR-UE link)). Here, the C-link is used for communication between the NCR and the network device. The BH link is used by the repeater to receive signals to be forwarded from the network device or to forward signals from the terminal device to the network device. The AC link is used by the repeater to forward signals from the network device to the terminal device or to receive signals to be forwarded from the terminal device. Specifically, the NCR-MT communicates with the network device via the C-link. The NCR-Fwd forwards signals via the BH link and the AC link.

[0033] In an embodiment of the present invention, a repeater can communicate with a network device. The repeater can receive a communication channel / signal transmitted by the network device and obtain information transmitted by the network device to the repeater by demodulating / decoding the channel / signal. This signal processing process is hereinafter referred to as "communication." The repeater can also forward a channel / signal transmitted between a network device and a terminal device. The repeater can amplify or process the channel / signal without demodulating / decoding it. This signal processing process is hereinafter referred to as "forwarding." "Communication" and "forwarding" are collectively referred to as "transmission." Furthermore, "transmitting or receiving on an AC (or BH) link" can be equivalent to "transferring on an AC (or BH) link," and "transmitting or receiving on a control link" can be equivalent to "communicating on a control link." The above terms are merely for convenience of explanation and do not limit the present invention. In some cases, the "forwarding unit" may be replaced with a "forwarding operation."

[0034] In an embodiment of the present invention, a repeater may be represented as a network controlled repeater (NCR), forwarder, radio frequency repeater, repeater, radio frequency repeater, or as a repeater node, forwarder node, repeater node, smart repeater, smart forwarder, smart repeater node, smart forwarder node, smart repeater node, etc., but the present invention is not limited thereto.

[0035] In the embodiments of the present invention, the network device may be a device of a serving cell of a terminal device, a device of a cell in which a repeater is located, a device of a serving cell of a repeater, or a parent node of a repeater. The present invention is not limited to the name of the repeater, and any device capable of realizing the above functions is included in the scope of the repeater according to the present invention.

[0036] In an embodiment of the present invention, the higher layer signaling may be, for example, radio resource control (RRC) signaling. The RRC signaling may include, for example, an RRC message, including, for example, a master information block (MIB), system information, a dedicated RRC message, an RRC information element (RRC IE), or an information field (or an information field) included in the RRC message or the RRC information element. The higher layer signaling may also be, for example, medium access control (MAC) signaling, or may be called a MAC control element (MAC CE). However, the present invention is not limited thereto.

[0037] In embodiments of the present invention, a plurality means at least two, or more than two.

[0038] In the embodiments of the present invention, "predefined" means that the network device is specified by a protocol or determined according to a rule specified by a protocol, and does not require additional configuration. "Configured / instructed" means that the network device is configured / instructed directly or indirectly by higher layer signaling and / or physical layer signaling. "Physical layer signaling" refers to, for example, but is not limited to, control information (DCI) carried by a physical control channel or control information carried by a sequence, and may be configured / instructed by introducing higher layer parameters into the higher layer signaling. "Higher layer parameters" refers to information fields and / or information elements (IEs) in the higher layer signaling.

[0039] Hereinafter, various aspects of the embodiments of the present invention will be described with reference to the drawings. These aspects are merely examples and are not intended to limit the present invention.

[0040] The following will be explained with reference to examples.

[0041] Example 1 The embodiment of the present invention provides a forwarding control method, which is explained from the repeater side.

[0042] 2 is a schematic diagram of an example of a forwarding control method according to an embodiment of the present invention. As shown in FIG. 2, the method may include the following steps:

[0043] Step 201: The mobile terminal of the repeater transitions from an RRC connected state to an unconnected RRC state, which includes an RRC inactive state or an RRC idle state.

[0044] Step 202: The forwarding unit of the repeater forwards the signal.

[0045] Note that the above-mentioned FIG. 2 merely exemplifies an embodiment of the present invention and is not limited thereto. For example, the execution order of each step may be adjusted as appropriate, and some other steps may be added or some steps may be deleted. Those skilled in the art may appropriately modify the above content and are not limited to the description of the above-mentioned FIG. 2.

[0046] In some embodiments, the repeater mobile terminal (hereinafter referred to as NCR-MT) and the repeater forwarding unit (NCR-Fwd) are both functional entities within the repeater, and both the repeater mobile terminal and the repeater forwarding unit may be referred to as the repeater.

[0047] In some embodiments, the method may further include a step in which the repeater mobile terminal receives a first RRC release message. The first RRC release message is used to transition the repeater mobile terminal from an RRC connected state to an unconnected state. That is, the NCR-MT receives the first RRC release message before receiving the first RRC release message and / or when the NCR-MT receives the first RRC release message, while the NCR-MT is in an RRC connected state, or the repeater mobile terminal receives the first RRC release message before transitioning from an RRC connected state to an unconnected state. In the RRC connected state, an RRC connection is established between the NCR-MT and a network device, and RRC signaling (which may involve data transmission) may be performed. After receiving the first RRC release message, the NCR-MT transitions to an unconnected state, including an RRC inactive state (RRC INACTIVE) and an RRC idle state (RRC IDLE). After receiving the first RRC release message, the NCR-MT stores various configurations sent from the network device and transitions to an RRC inactive state, where the RRC connection established between the NCR-MT and the network device is suspended, data cannot be transmitted, and a core network connection is established. Alternatively, after receiving the first RRC release message, the NCR-MT transitions to an RRC idle state, where the RRC connection established between the NCR-MT and the network device is released, RRC signaling cannot be transmitted, data cannot be transmitted, and there is no core network connection. For each state, reference may be made to the definitions in the prior art, and further description thereof will be omitted here. The above-mentioned "transmit" may be replaced with "enter," "transfer," "move," or "transition by the network device," "switch by the network device," "move by the network device," or the like, and the present invention is not limited thereto.

[0048] In some embodiments, in step 202, after the mobile terminal of the repeater receives the first RRC release message and / or the mobile terminal transitions to an unconnected RRC state, the forwarding unit of the repeater forwards the signal. That is, the forwarding unit of the repeater is in an ON state after the mobile terminal of the repeater receives the first RRC release message and / or the mobile terminal transitions to an unconnected RRC state. The following describes which cell's signal the forwarding unit forwards, which beam to use to forward the signal, and the forwarding direction.

[0049] (1) Regarding cells whose signals are forwarded by repeaters (hereinafter referred to as forwarded cells) Currently, for a terminal device, when an RRC release message used to transition the UE to a non-RRC connected state is received, if the RRC release message contains redirected carrier information, the UE should attempt to camp on an appropriate cell based on that information. If the UE cannot find a suitable cell, the UE is allowed to camp on any suitable cell of the indicated radio access technology (RAT). If the RRC release message does not contain redirected carrier information, the UE should attempt to select a suitable cell on an NR carrier. If a suitable cell is not found according to the above, the UE should perform cell selection using stored information to find a suitable cell to camp on.

[0050] According to the discovery of the inventors of the present invention, the cell that a UE first visits after receiving an RRC release message used to transition the UE to a non-RRC connected state is a suitable cell found by the UE. Although the network device can provide some auxiliary information, the cell that the UE first visits is not fully controlled by the network device. However, unlike a normal UE, an NCR forwards signals after the NCR-MT transitions to a non-RRC connected state, and the cell (forwarded cell) to which the signal is forwarded should be controlled by the network so as to improve network coverage while reducing interference. The following describes the forwarded cell.

[0051] In some embodiments, the forwarded cell includes a first cell and / or a second cell, where the first cell and the second cell have different carrier frequencies and / or cell identifiers, and the first cell and / or the second cell are predefined or indicated, or the forwarded cell is implementation dependent.

[0052] In some embodiments, the first cell and / or the second cell may be predefined such that the first cell includes a first serving cell of the repeater's mobile terminal and / or a second serving cell of the repeater's mobile terminal. The first serving cell and the second serving cell may be the same cell or different cells. The second cell includes a third serving cell of the repeater's mobile terminal. The first serving cell refers to a cell to which the repeater's mobile terminal is connected in an RRC connected state, and the second serving cell refers to a cell to which the repeater's mobile terminal visits in an RRC unconnected state. The third serving cell refers to a cell to which the repeater's mobile terminal reselects to visit. The third serving cell and the second serving cell have different carrier frequencies and / or cell identifiers.

[0053] For example, the first serving cell may be a cell or primary cell (Pcell) to which the repeater's mobile terminal connected while in an RRC connected state, and / or the last cell or primary cell (Pcell) to which the repeater's mobile terminal connected before entering an unconnected state, and / or the last cell or primary cell (Pcell) to which the repeater's mobile terminal connected before entering an unconnected state, and / or the cell or primary cell (Pcell) to which the repeater's mobile terminal connected when receiving a first RRC release message, and / or the cell and / or primary cell (Pcell) for transmitting the first RRC release message. If there is only one serving cell (Pcell) after the NCR initial access and no cell handover occurs, the cell refers to substantially the same cell, and if cell handover occurs after the NCR initial access, the cell may be a different cell. The second serving cell includes the cell where the repeater's mobile terminal first / initially visits in the non-RRC connected state and / or the cell where the repeater's mobile terminal first / initially visits after receiving the first RRC release message. The third serving cell includes the (current / most recent) cell where the repeater's mobile terminal reselects to visit in the non-RRC connected state.

[0054] In some embodiments, the first cell and / or the second cell are indicated. The first cell is indicated by the first RRC release message or by other signaling different from the first RRC release message. The second cell is indicated by the first RRC release message or by other signaling different from the first RRC release message. Here, the other signaling is received before or after the first RRC release message (i.e., the other signaling and the first RRC release message are carried on different PDSCHs or different channels), or is received simultaneously with the first RRC release message (i.e., the other signaling and the first RRC release message are carried on the same PDSCH). The other signaling may be RRC signaling and / or MAC layer signaling. The other signaling may be received by an NCR in an RRC connected state.

[0055] In some embodiments, the first RRC release message or other signaling includes first information for indicating the first cell and / or the second cell(s). For example, the first information may include a carrier frequency and / or a PLMN and / or a cell identity and / or a PCI of the first cell and / or the second cell, respectively. Here, the cell identity is used to unambiguously identify a cell in a PLMN / SNPN. Other information regarding the first RRC release message and other signaling is described in the following embodiments.

[0056] In some embodiments, the first cell and / or the second cell may be predefined or indicated. For example, if the first cell and / or the second cell are not indicated (e.g., by the first RRC release message or other signaling) (e.g., if the first RRC release message or other signaling does not include the first information), the first cell and / or the second cell are predefined (i.e., the protocol defines one or more default cells that apply when the first RRC release message or other signaling does not indicate the first cell and / or the second cell). If the first RRC release message or other signaling indicates the first cell and / or the second cell (e.g., if the first RRC release message or other signaling includes the first information), the first cell and / or the second cell are indicated.

[0057] In some embodiments, in step 202, the repeater's forwarding portion forwards the signals of the first cell and the second cell simultaneously or at different times.

[0058] For example, if the first serving cell and the second serving cell are the same and no cell reselection is performed after the NCR enters the non-RRC connected state, the repeater forwards the signal of the first serving cell (second serving cell) after the mobile terminal of the repeater receives the first RRC release message and / or after the mobile terminal transitions to the non-RRC connected state.

[0059] For example, if the first serving cell and the second serving cell are different and no cell reselection is performed after the NCR enters the non-RRC connected state, the repeater forwards signals of the first serving cell and the second serving cell simultaneously or at different times after the mobile terminal of the repeater receives the first RRC release message and / or after the mobile terminal transitions to the non-RRC connected state.

[0060] For example, if the first serving cell and the second serving cell are the same, and cell reselection is performed after the NCR enters the non-RRC connected state and stays on the third serving cell, the repeater first forwards the signal of the first serving cell (second serving cell) after the mobile terminal of the repeater receives the first RRC release message and / or after the mobile terminal transitions to the non-RRC connected state, and then forwards the signal of the third serving cell after the mobile terminal is reselected to stay on the third serving cell.

[0061] For example, if the first serving cell and the second serving cell are different and a cell reselection is performed after the NCR enters the non-RRC connected state and stays on the third serving cell, the repeater first forwards signals of the first serving cell and the second serving cell (simultaneously or not) after the mobile terminal of the repeater receives the first RRC release message and / or after the mobile terminal transitions to the non-RRC connected state, and then forwards signals of the third serving cell after the mobile terminal is reselected to stay on the third serving cell.

[0062] For example, if the first RRC release message or other signaling indicates multiple cells, the repeater may forward signals of the indicated multiple cells simultaneously or at different times after the repeater's mobile terminal receives the first RRC release message and / or after the mobile terminal transitions to a non-RRC connected state.

[0063] In some embodiments, the transferred cell may be updated or changed. The updated or changed transferred cell may be predefined or instructed. For example, if the updated / changed transferred cell is predefined or instructed, the NCR may transfer signals of different cells (e.g., the second serving cell and the third serving cell) after receiving the first RRC release message and / or after transitioning to the unconnected state and / or at different times in the unconnected state. For example, if the cell on which the NCR-MT is camped changes (from the second serving cell to the third serving cell), the NCR may transfer signals of the second and third serving cells after receiving the first RRC release message and / or after transitioning to the unconnected state and / or at different times in the unconnected state. For example, if it is predefined or instructed not to update / change the transferred cell, the NCR will not update the transferred cell, i.e., the NCR will not transfer signals of different cells (e.g., the second serving cell and the third serving cell) after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or at different times in a non-RRC connected state.

[0064] For example, when an instruction to update or change the transferred cell is instructed, it may be instructed by the second information, which may be carried by the first RRC release message or other signaling. If the second information is included in the first RRC release message or other signaling, it instructs to update / change the transferred cell, and if the second information is not included, it instructs not to update / change the transferred cell. The opposite may also be true. Alternatively, the second information with different bit values ​​may be used to instruct to update or change the transferred cell (0 indicates update / change, and the opposite may also be true) or to instruct not to update or change the transferred cell (1 indicates no update / change, and the opposite may also be true).

[0065] (2) Regarding the second beam used by the repeater to transmit the signal In some embodiments, the forwarding unit of the repeater uses a second beam when performing forwarding. The second beam is a beam used by the access link or a beam used by the UE side of the repeater when the forwarding unit of the repeater performs forwarding. Hereinafter, the second beam is also referred to as an access link beam. That is, the forwarding unit of the repeater uses the second beam for forwarding signals to or from the UE side.

[0066] In some embodiments, the second beam is predefined or commanded.

[0067] In some embodiments, the second beam includes the last (access link) beam used to perform the transfer before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state, and / or the (access link) beam used by the last time domain resource to perform the transfer before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state, and / or the beam indicated by the (last) received and / or applied third indication information (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state), and / or the downlink beam corresponding to the last time domain resource indicated by the (last) received third indication information (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state).

[0068] In some embodiments, the third indication information is used to indicate the access link beam to be used by the repeater's forwarding unit to perform forwarding before the repeater's mobile terminal receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during the RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during the non-RRC connected state.

[0069] For example, the third indication information may be access link beam indication information and may be carried by DCI (aperiodic access link beam indication) and / or RRC signaling (periodic access link beam indication) and / or MAC signaling. For example, the DCI may be a first DCI format for access link beam indication. The downlink control information of the first DCI format may not be used to schedule the PDSCH or the PUSCH, or the downlink control information of the first DCI format may be used to schedule the PDSCH or the PUSCH. The first DCI format may be a newly introduced DCI format (e.g., DCI format 2_8, 2_9, or 2_10, etc.) or an existing DCI format (e.g., 1_1 or 2_0, etc.) (the existing DCI format currently supports the functions of the embodiments of the present invention), but the embodiments of the present invention are not limited thereto.

[0070] In some embodiments, "downlink control information in the first DCI format" or "downlink control information using the first DCI format" or "DCI in the first DCI format" or "second beam instruction information" or "DCI" may be replaced with "first DCI format."

[0071] For example, the third instruction information may include one or more fourth information fields indicating beams and one or more fifth information fields indicating time domain resources, and the forwarding unit of the repeater will not perform forwarding using time domain resources other than those indicated (by the third instruction information). For example, the third instruction information is DCI, and the fourth information field is used to indicate one access link beam index, or to indicate at most one access link beam index, or to indicate multiple access link beam indexes. The access link beam index may include a beam index corresponding to an access link beam (or an (actual) physical beam) and / or a beam index that does not correspond to a beam (or an (actual) physical beam).

[0072] In some embodiments, the beam index range is predefined and / or configured / instructed by higher layer signaling. For example, all beam indices within the beam index range are predefined and / or configured / instructed by higher layer signaling, or some of the beam indices are predefined and other beam indices are configured / instructed by higher layer signaling. In the latter case, for example, but not limited to, beam indices corresponding to beams are predefined and other beam indices not corresponding to beams are configured / instructed by higher layer signaling.

[0073] In some embodiments, one fifth information field is used to indicate one time domain resource index, or at most one time domain resource index, or multiple time domain resource indexes, where the index may be replaced by a sequence number.

[0074] In some embodiments, the fifth information field corresponds to a time domain resource table. The time domain resource table may be predefined and / or configured by the first RRC message or another RRC message. The time domain resource table includes one or more time domain resource configurations. A time domain resource (TDRA) table (also referred to as a TDRA table for short) includes at least one row (column). For convenience of explanation, one row (column) is hereinafter referred to as one TDRA configuration. One TDRA configuration may include one time domain resource, multiple time domain resources, or no time domain resource. The time domain resources may be contiguous or discontinuous.

[0075] In some embodiments, the time domain resource is defined by one or more parameters, such as a slot offset K3, a symbol offset S, a duration L for determining the time domain resource, and a subcarrier spacing. These parameters may be predefined and / or configured by higher layer signaling. Here, the slot offset K3 refers to an offset value between the reference point and a starting slot of the time domain resource or a first slot corresponding to / overlapping with / associated with the starting slot of the time domain resource. The reference point may be determined based on at least a slot or symbol in which DCI carrying second beam indication information is located, or a slot or symbol in which PUCCH / PUSCH of HARQ feedback of DCI or PDCCH carrying second beam indication information is located. When a time domain resource configuration includes multiple time domain resources, the reference points of the slot offsets of different time domain resources may be the same (e.g., determined based on the slot or symbol in which at least the DCI of the second beam indication information exists) or different (e.g., for a first time domain resource, determined based on the slot or symbol in which at least the DCI of the second beam indication information exists, and for a subsequent time domain resource, determined based on the slot or symbol in which at least the previous time domain resource exists). The symbol offset S means an offset value between the first symbol of the time domain resource and the boundary / start symbol / first symbol of the above-mentioned starting slot, or the starting symbol / first symbol for the DCI or PDCCH / PDCCH MO carrying the second beam indication information. The length L of the time domain resource represents, for example, the number of symbols the time domain resource includes. The symbol offset S and / or the length L of the time domain resource must, for example, ensure that the configured time domain resources are in the same slot, or the configured time domain resources may be in the same slot or may be between slots. Each configuration in the time domain resource table includes the same or different numbers of time domain resources.

[0076] In some embodiments, the time domain resources in one configuration may be defined in the form of a list or a sequence. For example, an IE including the above parameters defining one time domain resource is introduced. One configuration includes a list or a sequence including one or more fields corresponding to the above IE.

[0077] In some embodiments, the fifth information field may indicate one time domain resource, or multiple time domain resources, or no time domain resources, by indicating a configuration in a time domain resource table.

[0078] In some embodiments, the time-domain resource index may include a time-domain resource index corresponding to a time-domain resource and / or a time-domain resource index not corresponding to a time-domain resource. For example, the time-domain resource index is an index or sequence number of a configuration in a column (row) in the time-domain resource table corresponding to the fifth information field. If all configurations in the time-domain resource table include a time-domain resource, the time-domain resource index includes only a time-domain resource index corresponding to the time-domain resource. If the time-domain resource table includes configurations that include a time-domain resource and configurations that do not include a time-domain resource, the time-domain resource index includes time-domain resource indexes corresponding to the time-domain resource and time-domain resource indexes not corresponding to the time-domain resource. As another example, if all configurations in the time-domain resource list include a time-domain resource and all values ​​in the time-domain resource index correspond to configurations in the time-domain resource table, the time-domain resource index includes only a time-domain resource index of the corresponding time-domain resource. If some values ​​of the time-domain resource index correspond to configurations in the time-domain resource table and some values ​​do not correspond to any configurations in the time-domain resource table, the time-domain resource index includes time-domain resource indexes corresponding to the time-domain resource and time-domain resource indexes not corresponding to the time-domain resource. Here, the time domain index that does not correspond to a time domain resource may be, for example, predefined and / or configured by higher layer signaling.

[0079] In some embodiments, the second beam is indicated by third indication information. For example, if the third indication information is DCI, the forwarding unit of the repeater monitors a DCI format corresponding to the third indication information before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state, and continues to monitor the DCI format corresponding to the third indication information after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in the non-RRC connected state, and sets the access link beam indicated by the third indication information as the second beam. In other words, the access link beam indicated by the aperiodic access link beam indication information (DCI) may be used to transfer signals in an RRC connected state or a non-RRC connected state.

[0080] In some embodiments, the second beam is indicated by a fourth indication information. The fourth indication information is dedicated to indicating an access link beam to be used by the forwarding unit of the repeater to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or after transitioning to an unconnected state and / or while in an unconnected state, and / or the fourth indication information may be carried by DCI and / or RRC signaling and / or MAC CE. The embodiments of the present invention are not limited thereto, and for example, the fourth indication information is included in the first RRC release message.

[0081] For example, the fourth instruction information includes information indicating one or more second beams. The fourth instruction information may or may not include information for indicating time domain resources. If the fourth instruction information includes information indicating time domain resources, the forwarding unit of the repeater will not perform forwarding on any time domain resources other than those indicated by the fourth instruction information.

[0082] In some embodiments, when the fourth indication information indicates the second beam, the third indication information is used to indicate an access link beam used by the forwarding unit of the repeater to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state. That is, the forwarding unit of the repeater monitors the DCI format corresponding to the third indication information before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state, and does not monitor the DCI format corresponding to the third indication information after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in the non-RRC connected state, and sets the access link beam indicated by the fourth indication information (e.g., included in the first RRC release message) as the second beam. That is, the access link beam indicated by the aperiodic access link beam indication information (DCI) may be used to transfer signals in an RRC connected state, but is not used to transfer signals in a non-RRC connected state.

[0083] (3) Regarding the first beam used by the repeater to transmit signals In some embodiments, the forwarding unit of the repeater uses a first beam when performing forwarding. The first beam is a beam used by a backhaul link or a beam used by the network device side of the repeater when the forwarding unit of the repeater performs forwarding. Hereinafter, the first beam is also referred to as a backhaul link beam. That is, the forwarding unit of the repeater uses the first beam for forwarding signals to or from the network device side.

[0084] In some embodiments, the first beam is predefined or commanded.

[0085] In some embodiments, the first beam comprises: the (last) beam used by the mobile terminal of the control link or repeater to perform reception and / or transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state to perform transfers and / or the (last) beam used by the mobile terminal of the repeater or control link before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or the beam used by the (control link or repeater mobile terminal) to receive the first RRC release message, and / or The beam used by the PUSCH or PUCCH transmitting HARQ-ACK information for the PDSCH carrying the first RRC release message, and / or the beam used by the mobile terminal of the control link or repeater, and / or beams for monitoring the control channel, and / or the beam determined by the QCL assumption of the CORESET with the smallest ID (the configured CORESET for the first serving cell), and / or A beam determined by the spatial relationship of the PUCCH with the smallest (PUCCH resource) ID (configured CORESET for the first serving cell), and / or (Last) indicated unified TCI beam (in / for the first serving cell), and / or The beam indicated by the (last) first indication information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state), and / or the same beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or The beam determined based on the SSB identified / selected during the initial access procedure, and / or The beam determined based on the SSB identified / selected in the random access procedure, and / or This may include beams determined based on SSBs identified / selected in the recent random access procedure.

[0086] For example, the above-mentioned used / determined beam is a beam directed toward the network device, meaning a beam used when the repeater's forwarding section forwards to the network device, or a beam used on the network device side.

[0087] For example, the beam determined by the QCL hypothesis of the CORESET with the smallest ID means that the CORESET with the smallest ID is the first DL BWP and / or the CORESET with the smallest ID at the first time position. The CORESET may be CORESET#0, the first DL BWP is in the PCell, and / or the first DL BWP is the initial DL BWP, default DL BWP, or active DL BWP. The first time position includes the latest slot in which one or more CORESETs are monitored by the NCR-MT (e.g., in an activated BWP / first CORESET of the serving cell (e.g., PCell)).

[0088] For example, the beam determined by the spatial relationship of the PUCCH with the smallest PUCCH resource ID means that the PUCCH with the smallest PUCCH resource ID is the PUCCH with the smallest PUCCH resource ID in the first UL BWP and / or the second time position. The first UL BWP is in the Pcell and / or the first UL BWP is the initial UL BWP, default UL BWP, or active UL BWP. The second time position includes the latest slot in which the NCR-MT (e.g., within the activated BWP of the serving cell) transmits the PUCCH (i.e., the latest slot in which the NCR-MT transmits the UL PUCCH).

[0089] For example, the same beam as the beam used for the most recent / last reception and / or transmission via the control link, or the beam determined based on the SSB identified / selected in the initial access procedure, or the beam determined based on the SSB identified / selected in the random access procedure, or the beam determined based on the SSB identified / selected in the most recent random access procedure, is the same for the downlink as the beam determined based on the SSB identified / selected by the NCR in the initial access procedure or the random access procedure, or the beam determined based on the SSB identified / selected in the QCL assumption initial access procedure, or receiving the RAR in the initial access procedure, and / or receiving the DCI / PDCCH to schedule the PUSCH (Msg. 3), and / or receiving the DCI / PDCCH to schedule the PDSCH (Msg. 4), and / or receiving Msg. 4. For the uplink, the UL TX spatial filter is the same as the PUSCH scheduled by the RAR in the initial access procedure or the PUSCH (Msg. 3) and / or the PUCCH scheduled by the DCI / PDCCH. Here, the initial access procedure is used for initial access, beam failure recovery, RRC connection re-establishment, or RRC connection recovery. The initial access procedure, random access procedure, and recent / last reception and / or transmission over the control link are performed before the mobile terminal of the repeater receives the first RRC release message. The recent / last reception over the control link includes recent / last PDCCH monitoring and / or reception of PDSCH and / or CSI-RS and / or SSB. The recent / last transmission over the control link includes recent / last PUSCH and / or PUCCH and / or SRS transmission.

[0090] In some embodiments, when the NCR receives or transmits a mobile terminal of the repeater after receiving a first RRC release message and / or after transitioning to a non-RRC connected state and / or in a non-RRC connected state, the first beam is the beam used by the mobile terminal of the control link or the repeater. That is, when downlink reception or uplink transmission in the control link and the backhaul link is performed simultaneously in the time domain resource, the backhaul link beam (first beam) is the same as the control link beam or the beam used by the mobile terminal of the repeater, regardless of whether there is dedicated signaling indicating the backhaul link beam.

[0091] For example, for the downlink, when the NCR-MT (at the POs) monitors the control channels (including the paging channel and / or system information) or performs necessary measurements related to cell reselection, or (when the NCR-Fwd is forwarding signals to the RAN-based notification area RNA update procedure or the RRC connection recovery procedure) receives RAR / Msg.2 or Msg.4 (e.g., including a connection recovery message), the backhaul link beam (first beam) is the same as the beam used by the NCR-MT to monitor the control channels, or the beam used to perform the above measurements, or the beam used to receive RAR / Msg.2 or Msg.4, respectively.

[0092] For example, for the uplink (when NCR-Fwd is forwarding signals for the RNA update procedure or the RRC connection recovery procedure), when the NCR-MT transmits signals (e.g., a random access channel, Msg.3 (e.g., containing a connection recovery request message), a PUCCH carrying a HARQ-ACK for Msg.4), the backhaul link beam (first beam) is the same as the beam used by the NCR-MT to transmit the above signals (i.e., the uplink beam or spatial relationship used for the random access procedure).

[0093] In some embodiments, after the NCR receives the first RRC release message and / or transitions to a non-RRC connected state and / or in a non-RRC connected state, if the mobile terminal of the repeater is not performing reception or transmission, i.e., downlink reception or uplink transmission on the control link and the backhaul link is not simultaneously performed in the time domain resource, the first beam: the (last) beam used to perform the transfer before receiving the first RRC release message and / or before transitioning to an unconnected state and / or while in an RRC connected state; and / or the (last) beam used by the mobile terminal of the control link or repeater before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or the beam used by which the control link or the repeater's mobile terminal receives the first RRC release message, and / or The beam used by the PUSCH or PUCCH transmitting HARQ-ACK information for the PDSCH carrying the first RRC release message, and / or the beam determined by the QCL assumption of the CORESET with the smallest ID (the configured CORESET for the first serving cell), and / or A beam determined by the spatial relationship of the PUCCH with the smallest (PUCCH resource) ID (configured CORESET for the first serving cell), and / or the indicated unified TCI beam or the last indicated unified TCI beam (in / for the first serving cell), and / or the beam indicated by the first instruction information or the last first instruction information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state); and / or the same beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or The beam determined based on the SSB identified / selected during the initial access procedure, and / or The beam determined based on the SSB identified / selected in the random access procedure, and / or This includes beams determined based on SSBs identified / selected in the recent random access procedure.

[0094] For example, the first beam may be the (last) beam used for transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or in the RRC connected state, and / or the (last) beam used by the mobile terminal of the control link or repeater before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or in the RRC connected state, and / or the beam used to receive the first RRC release message (by the mobile terminal controlling the link or repeater). In some cases, for example, when the NCR does not support the new signaling capability to indicate a backlink beam or when the dedicated signal does not indicate a backlink beam, and when a Rel-15 / 16 beam indication frame is used for the control link, the beam determined by the QCL assumption of the CORESET with the smallest ID (the CORESET configured for the first serving cell) and / or the beam determined by the spatial relationship of the PUCCH with the smallest (PUCCH resource) ID (the CORESET configured for the first serving cell) is the backlink beam (the first beam). When a Rel-17 beam indication frame (unified TCI framework) is used for the control link, the beam of the last indicated unified TCI (in / for the first serving cell) is the backlink beam (first beam). When dedicated signaling (first indication information) indicates a backlink beam, the first beam is the beam indicated by the last received first indication information. For example, when a Rel-15 beam indication frame is used for NCR-MT, the first indication information instructs the downlink beam to select one of the TCI state IDs from the control link beam list configured by the RRC, and the uplink beam is indicated via the SRI on the control link by the first indication information. When a Rel-17 beam indication frame is used for NCR-MT, the first indication information instructs the uplink beam and the downlink beam to select one of the TCI state IDs from the control link beam list configured by the RRC.For example, the first instruction information indicating a backlink beam as the first beam applies only if the NCR supports new signaling to indicate a backlink beam.

[0095] In some embodiments, the first beam includes a first downlink beam for performing downlink transmission and a first uplink beam for performing uplink transmission, the first uplink beam being determined by the first downlink beam, where the first uplink beam is the (last) uplink beam used by the mobile terminal of the control link or repeater to perform reception and / or transmission (uplink) before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or the uplink beam of the time domain resources of the (last) uplink transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or the (last) uplink beam used by the mobile terminal of the control link or repeater before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or the uplink beam of the (last) uplink transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or an uplink beam used by a PUSCH or PUCCH transmitting HARQ-ACK information for a PDSCH carrying a first RRC release message; and / or The (uplink) beam determined by the spatial relationship of the PUCCH (configured CORESET for the first serving cell) with the smallest (PUCCH resource) ID, and / or a beam of the indicated unified TCI (in / for the first serving cell) or an uplink beam of the last indicated unified TCI, and / or The uplink beam indicated by the first instruction information or the last first instruction information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state), and / or the same uplink beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or An uplink beam determined based on the SSB identified / selected during the initial access procedure, and / or an uplink beam determined based on the SSB identified / selected in the random access procedure, and / or This includes the uplink beam determined based on the SSB identified / selected in the recent random access procedure.

[0096] The first downlink beam is the (last) downlink beam used by the mobile terminal of the control link or repeater to perform reception and / or transmission (downlink) before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state, the downlink beam of the time domain resources of the (last) downlink transmission, and / or the (last) downlink beam used by the mobile terminal of the control link or repeater before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or the downlink beam of the (last) downlink transmission (from the first serving cell) before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state; and / or the (downlink) beam used to receive the first RRC release message, and / or the (downlink) beam used by the mobile terminal of the control link or repeater, and / or (downlink) beams for monitoring the control channel, and / or the (downlink) beam determined by the QCL assumption of the CORESET with the smallest ID (the configured CORESET for the first serving cell), and / or a directed unified TCI beam (in / for the first serving cell) or a last directed unified TCI downlink beam, and / or The downlink beam indicated by the first instruction information or the last first instruction information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state), and / or the same downlink beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or A downlink beam determined based on the SSB identified / selected during the initial access procedure, and / or A downlink beam determined based on the SSB identified / selected in the random access procedure, and / or This includes downlink beams determined based on SSBs identified / selected in the recent random access procedure.

[0097] In some embodiments, the first indication information is used to indicate a backhaul link beam to be used by the forwarding unit of the repeater to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during the RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during the non-RRC connected state. The first indication information may be carried by the first RRC signaling, although embodiments of the present invention are not limited thereto. For example, the first indication information includes information for indicating a beam.

[0098] In some embodiments, the first beam is indicated by first indication information. For example, the forwarding unit of the repeater receives the first indication information before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state, and receives the first indication information after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in the non-RRC connected state, and sets the backhaul link beam indicated according to the first indication information as the first beam. That is, the backhaul link beam indicated by the first indication information may be used to transfer signals in the RRC connected state or may be used to transfer signals in the non-RRC connected state.

[0099] For example, the first indication information may be MAC signaling. Here, the first indication information may be used to indicate a TCI state for a backhaul link from a first TCI state set, or a TCI state for a backhaul link from a second TCI state set, or an SRI for a backhaul link from a first SRI set. For example, when the control link applies a Rel-15 / 16 beam indication frame, the first indication information indicates a TCI state for a backhaul link from a first TCI state set for a down beam, and the first indication information indicates an SRI for a backhaul link from a first SRI set for an up beam. When the control link applies a Rel-17 beam indication frame, the first indication information indicates a TCI state for a backhaul link from a second TCI state set.

[0100] In some embodiments, the first indication information includes one or more MAC CEs.

[0101] For example, the first indication information includes a first MAC CE indicating a downlink beam of the backhaul link, and if the control link applies a Rel-15 / 16 beam indication frame, for the downlink beam, the first MAC CE indicates a TCI state for the backhaul link from a first set of TCI states. The first indication information includes at least a first information field indicating a TCI state (e.g., a TCI state ID), and may or may not include a second information field indicating a serving cell (e.g., a serving cell ID) and / or a third information field indicating a downlink BWP (e.g., a BWP ID).

[0102] For example, the first indication information includes a second MAC CE indicating an uplink beam for the backhaul link. If the control link applies the Rel-15 / 16 beam indication framework, for the uplink beam, the second MAC CE indicates an SRI for the backhaul link from the first set, and includes a first information field indicating an SRI (e.g., an SRI ID), and may or may not include a second information field indicating a serving cell (e.g., a serving cell ID) and / or a third information field indicating an UL BWP (e.g., a BWP ID). For example, the first information field indicates a pucch-SpatialRelationInfoId to indicate the SRI for the backhaul link.

[0103] For example, the first indication information includes a third MAC CE indicating up-beaming and / or down-beaming of the backhaul link. If the control link applies the Rel-17 beam indication framework, the third MAC CE indicates a TCI state for the backhaul link from a second TCI state set. The first information field may include a first information field indicating a TCI state (e.g., a TCI state ID), and may or may not include a second information field indicating a serving cell (e.g., a serving cell ID) and / or a third information field indicating a BWP (e.g., a BWP ID). The first information field indicates a Unified TCI state, for example, indicating a TCI state for the backhaul link from dl-OrJointTCI-StateList.

[0104] The first MAC CE, the second MAC CE, and the third MAC CE may be the same MAC CE or different MAC CEs, and the embodiment of the present invention is not limited thereto.

[0105] In some embodiments, the first beam is indicated by second indication information. The second indication information is dedicated to indicating a backhaul link beam to be used by the forwarding unit of the repeater to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state. For example, the second indication information is carried by MAC CE or second RRC signaling. The second indication information is different from the above-mentioned first indication information and is dedicated to indicating a backhaul link beam to be used by the forwarding unit of the repeater to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state. Alternatively, the second RRC signaling is dedicated RRC signaling. The second RRC signaling is different from the first RRC signaling and is dedicated to instructing the forwarding unit of the repeater to use a backhaul link beam to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state. For example, the second instruction information is included in the first RRC release message.

[0106] In some embodiments, the second indication information indicates a backhaul link beam used by the forwarding unit of the repeater to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or transitions to a non-RRC connected state and / or is in a non-RRC connected state. The first indication information indicates a backhaul link beam used by the forwarding unit of the repeater to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or transitions to a non-RRC connected state and / or is in a RRC connected state. That is, the forwarding unit of the repeater determines a backhaul link beam according to the first instruction information before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during the RRC connected state, and determines the backhaul link beam indicated according to the second instruction information (e.g., included in the first RRC release message) as the first beam after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during the non-RRC connected state.

[0107] (4) Direction of signal transmission by repeaters In some embodiments, the forwarding unit of the repeater forwards signals according to a TDD configuration. The TDD configuration includes a first TDD configuration (e.g., TDD-UL-DL-ConfigCommon) received by the mobile terminal of the repeater in system information broadcast by the first cell and / or the second cell and / or the first serving cell and / or the second serving cell and / or the third serving cell, and / or a second TDD configuration (e.g., TDD-UL-DL-ConfigDedicated) received by the mobile terminal of the repeater (in the first cell and / or the first serving cell) (before receiving the first RRC release message). For example, the first TDD configuration and / or the second TDD configuration may flexibly configure a transmission direction type for time domain resources, where the transmission direction type includes uplink, downlink, and flexible, and where the second TDD configuration cannot override the downlink or uplink configured by the first TDD configuration. That is, if a first TDD configuration configures a slot or symbol as downlink (or uplink), the second TDD configuration cannot reconfigure that slot or symbol as uplink or flexible (downlink or flexible); even if it is configured as uplink or flexible (downlink or flexible) in the second TDD configuration, the one configured in the first TDD configuration still takes precedence (it is still downlink (or uplink)). The second TDD configuration can override the flexible one configured by the first TDD configuration as downlink or uplink. That is, if the first TDD configuration configures a slot or symbol as flexible or not as uplink or downlink, the second TDD configuration may configure it as downlink or uplink, or may configure it as flexible.

[0108] For example, when NCR-Fwd performs a forwarding after NCR-MT has entered an RRC inactive state, the semi-static configuration applied is the last / most recently received semi-static configuration (e.g., the first TDD configuration and / or the second TDD configuration) before receiving the first RRC release message, which is used to transition the repeater's mobile terminal from an RRC connected state (RRC CONNECTED) to an RRC inactive state.

[0109] Therefore, the repeater needs to determine a forwarded cell, a first beam / a second beam, and a forwarding direction to forward a signal. Here, the forwarded cell, the first beam, and the second beam may be predefined. When at least one of the forwarded cell (first information), the first beam (first indication information or second indication information), and the second beam (third indication information or fourth indication information) is indicated, the network device may provide a necessary configuration to the repeater, where the necessary configuration includes one or more of the first information, the first indication information or second indication information, the third indication information or fourth indication information, and a TDD configuration. This necessary configuration may be included in the first RRC release message or in other signaling as described above, but the embodiment of the present invention is not limited thereto.

[0110] In some embodiments, it is predefined that the repeater forwards signals or does not forward signals after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state.

[0111] For example, after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or in a non-RRC connected state, the network device must provide the required configuration to the repeater (the repeater expects the network device to provide the required configuration), and the forwarding unit of the repeater forwards signals according to the required configuration (predefined information) in the first RRC release message and / or other signaling.

[0112] For example, if the network device does not provide the repeater with the necessary configuration before receiving the first RRC release message and / or before transitioning to the non-RRC connected state and / or in the RRC connected state, the forwarding unit of the repeater does not forward the signal. If the network device provides the repeater with the necessary configuration, the forwarding unit of the repeater forwards the signal according to the necessary configuration (predefined information) in the first RRC release message and / or other signaling.

[0113] In some embodiments, the repeater is instructed (instructed by the third information) to forward or not forward signals after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or in a non-RRC connected state. The third information may be carried by the first RRC release information or other signaling, but embodiments of the present invention are not limited thereto. For example, if the third information is included in the first RRC release information or other signaling, the repeater is instructed to forward signals after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or in a non-RRC connected state. If the third information is not included in the first RRC release information or other signaling, the repeater is instructed not to forward signals after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or in a non-RRC connected state, or vice versa. Alternatively, the third information may use different bit values ​​to indicate whether to transfer (0 indicates transfer) or not to transfer (1 indicates not to transfer) the signal after receiving the first RRC release message and / or after transition to a non-RRC connected state and / or in a non-RRC connected state. The embodiment of the present invention is not limited thereto.

[0114] In some embodiments, the above first information, second information, and third information correspond to newly introduced information fields or already existing information fields (to support NCR, this information field supports the above new function or meaning) in the first RRC release message or other signaling, respectively, and embodiments of the present invention are not limited thereto. As described above, the first RRC release message or other signaling may include one or more of the first information, second information, third information, first indication information / second indication information, and third indication information / fourth indication information.

[0115] According to this embodiment, after the repeater transitions to a non-RRC connected state, the repeater forwards signals, so that the time domain resources / beams corresponding to the on state of the forwarding unit match the time domain resources / beams of data transmission between the network device and the terminal device, thereby saving the power consumption of the repeater, reducing interference, and improving network throughput.

[0116] Currently, a UE in a non-RRC connected state performs cell reselection, and the principle of this process is as follows:

[0117] Cell reselection is always based on CD-SSBs located on a synchronous grid.

[0118] The UE measures the attributes of the serving cell and neighboring cells to implement the reselection procedure.

[0119] For inter-frequency neighbor cell search and measurement, only the carrier frequency needs to be indicated.

[0120] Cell reselection identifies the cell in which the UE should reside, and is based on cell reselection criteria that include measurements of the serving cell and neighboring cells.

[0121] Intra-frequency reselection is based on the ranking of cells.

[0122] Inter-frequency reselection is based on absolute priority, with the UE attempting to camp on the highest priority frequency (ie, cell) available.

[0123] The serving cell may provide a neighbor cell list (NCL) to handle certain situations of intra-frequency and inter-frequency neighbor cells.

[0124] The (serving cell) may provide an exclusion list to prevent the terminal from reselecting certain intra- and inter-frequency neighbor cells.

[0125] The (serving cell) may provide an allowed list to request that the terminal reselect only certain intra- and inter-frequency neighbor cells.

[0126] Cell reselection can be speed dependent.

[0127] Service-specific priority.

[0128] A serving cell may provide slice-based cell reselection information to facilitate a UE reselecting a cell that supports a particular slice.

[0129] In the non-RRC connected state, the above-mentioned serving cell refers to the cell to be visited. If the UE finds a more suitable cell according to the cell reselection criteria, the UE reselects the cell and visits it. If the new cell does not belong to at least one TA where the UE has registered, it performs location registration. In the RRC inactive state, if the new cell does not belong to the configured RNA, it performs an RNA update procedure.

[0130] Currently, in normal camping state, the UE performs the following actions:

[0131] 1. Monitor the cell's paging channel based on the broadcast information in SIB1 2. Monitor short messages sent by DCI via P-RNTI 3. Monitor relevant system information 4. Perform measurements required for cell reselection evaluation 5. Perform cell reselection evaluation procedure under the following occasions / triggers a. UE internally triggered to meet performance b. When the information on the BCCH for the cell reselection evaluation procedure is changed c. When the network slice and / or NSAG information received from the NAS is changed According to the discovery of the inventors of the present invention, a UE can perform measurements necessary for cell reselection evaluation in a non-RRC connected state, find a more suitable cell based on the cell reselection procedure, and change the serving cell. Meanwhile, the UE can monitor the paging channel, system information, etc., in the serving cell. For the NCR, if the connected cell for an NCR-MT in an RRC inactive state refers to the serving cell, a change in the serving cell means that the cell to which the NCR forwards signals also changes. However, the network side cannot know that the serving cell of the NCR-MT has changed, which could cause the network to lose control of which cell's signals are forwarded, potentially resulting in significant interference. Meanwhile, there is currently no method for determining whether or how the NCR should continue forwarding signals when the NCR-MT is paged or connection recovery is initiated.

[0132] The embodiment of the present invention further provides a forwarding control method, which is explained from the repeater side.

[0133] 3 is a schematic diagram of an example of a transmission control method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:

[0134] Step 301: A mobile terminal of a repeater transitions from an RRC connected state to an unconnected RRC state, which includes an RRC inactive state or an RRC idle state.

[0135] Step 302: After the mobile terminal of the repeater enters the non-RRC connected state, the forwarding unit of the repeater performs forwarding or does not perform forwarding.

[0136] Note that the above-mentioned FIG. 3 merely exemplifies an embodiment of the present invention and is not limited thereto. For example, the execution order of each step may be adjusted as appropriate, and some other steps may be added or some steps may be deleted. Those skilled in the art may appropriately modify the above content and are not limited to the description of the above-mentioned FIG. 3.

[0137] In some embodiments, the method further includes the repeater mobile terminal receiving a first RRC release message, the first RRC release message being used to transition the repeater mobile terminal from an RRC connected state to an unconnected state, i.e., the NCR-MT is in the RRC connected state before receiving the first RRC release message and / or when receiving the first RRC release message, the NCR-MT receives the first RRC release message, i.e., the repeater mobile terminal receives the first RRC release message before transitioning from the RRC connected state to the unconnected state.

[0138] In some embodiments, the NCR does not forward any signals in the non-RRC connected state. That is, if a second condition is met, the forwarding unit of the repeater does not perform forwarding after the mobile terminal of the repeater transitions to the non-RRC connected state. The second condition includes that the mobile terminal of the repeater receives information (carried in the first RRC release message, RRC reconfiguration message, or other message) indicating that the forwarding unit of the repeater will not perform forwarding after the mobile terminal of the repeater transitions to the non-RRC connected state (until receiving the first RRC release message or transitioning to the non-RRC connected state, or before receiving the first release message or transitioning to the non-RRC connected state), or that an access link beam configuration is not provisioned and / or activated for the repeater (until receiving the first RRC release message or transitioning to the non-RRC connected state, or before receiving the first release message or transitioning to the non-RRC connected state), and / or the access link beam configuration is released and / or deactivated. For example, the access link beam configuration includes a periodic access link beam configuration and / or an activated semi-persistent access link configuration, which may be conveyed by the above-mentioned third indication information, for example, by RRC signaling, but the description thereof is omitted here.

[0139] In some embodiments, the forwarding unit of the repeater performs forwarding after the mobile terminal of the repeater transitions to a non-RRC connected state, and if / after the first condition is met, the forwarding unit of the repeater does not forward the signal, and / or the mobile terminal of the repeater sends a connection recovery request message or a connection establishment request message.

[0140] The first condition is: The repeater mobile terminal has transitioned to a non-RRC connected state and performed cell selection or reselection, and has subsequently found a more suitable cell; and / or The serving cell has changed after the repeater mobile terminal transitioned to an unconnected RRC state (for example, the serving cell has changed from the second serving cell to the third serving cell), and / or After the repeater mobile terminal transitions to a non-RRC connected state and performs cell selection or reselection, it finds a more suitable cell, and the more suitable cell does not belong to the configured transferable cells (i.e., the cell to which this NCR is allowed to be transferred is indicated, for example, by the first information); and / or the expiration of the first timer; and / or that the repeater's mobile terminal has received a paging message for the mobile terminal; and / or The repeater mobile terminal has detected a (same frequency) cell of better quality than the currently forwarded cell (based on measurements for cell reselection evaluation or not), and / or The repeater's serving cell does not satisfy the third condition.

[0141] In some embodiments, the first condition further comprises the repeater not updating the cell being forwarded (predefined or indicated by the second information).

[0142] The first timer is started when a first RRC release message is received, and / or stopped when an RRC recovery message or an RRC establishment message is received (after transmitting a connection recovery request or a connection establishment request), or when the first RRC release message is received again. Here, information related to the first timer is carried by the first RRC release message, and the first RRC release message may further carry third information. The first timer is, for example, T380 (a timer that triggers a periodic RNAU procedure in NCR-MT) or a newly introduced timer. The timer has a basic unit of, for example, milliseconds, seconds, hours, or days, but the present invention is not limited thereto.

[0143] The relevant information for indicating the first timer is optional or (for NCR-MT) mandatory (i.e., the first RRC release message must include the relevant information for the first timer).

[0144] The paging may be initiated by the RAN, or the paging may be RAN paging, or the paging message may be based on the I-RNTI.

[0145] The third condition is the S criterion, i.e., Srxlev>S IntraSearchP and Squal>S IntraSearchQ where Srxlev represents the cell selection reception level value, Squal represents the cell selection quality, and S IntraSearchP represents the same frequency cell search reception level reference value, and S IntraSearchQ represents the same frequency cell search quality reference value.

[0146] In some embodiments, if the non-RRC connected state is an RRC inactive state, the repeater mobile terminal transmits a connection recovery request message (RRCResumeRequest or RRCResumeRequest1), and if the non-RRC connected state is an RRC idle state, the repeater mobile terminal transmits a connection recovery request message. The connection recovery request message includes recovery reason information, or the connection establishment request message includes establishment reason information. The recovery reason information or the establishment reason information includes a reason defined for the repeater or another existing reason (e.g., RNA update), etc. Here, the other existing reason may or may not support a new function or meaning, such as a new meaning defined for the repeater.

[0147] In some embodiments, the forwarding portion of the repeater is not forwarding signals, also referred to as stopping forwarding signals, or the forwarding portion of the repeater is in a shutdown / standby state, indicating that NCR-Fwd is not permitted or that it is not capable of forwarding signals or does not intend to forward signals.

[0148] According to the above method, it is possible to prevent the signal of the transferred cell from becoming uncontrollable by the network and to avoid strong interference.

[0149] The embodiment of the present invention further provides a forwarding control method, which is explained from the repeater side.

[0150] 4 is a schematic diagram of an example of a transmission control method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

[0151] Step 401: A mobile terminal of a repeater transitions from an RRC connected state to an unconnected state, which includes an RRC inactive state or an RRC idle state.

[0152] Step 402: The mobile terminal of the repeater does not perform cell selection or reselection, and / or a first timer is configured for the mobile terminal of the repeater.

[0153] In some embodiments, the repeater mobile terminal enters a non-RRC connected state, and the repeater mobile terminal does not perform cell selection or reselection (for example, performs or does not perform measurements required for cell reselection evaluation or other measurements). This means that the cell in which the NCR resides does not change, and therefore does not cause the signal of the transferred cell to be uncontrolled by the network, and can avoid strong interference.

[0154] In some embodiments, the mobile terminal of the repeater enters a non-RRC connected state, and the first RRC release message includes information related to the first timer, i.e., the NCR must configure the first timer according to the method of Fig. 3. This can prevent the signal of the transferred cell from being uncontrolled by the network and avoid strong interference.

[0155] The above-described embodiments in FIGS. 3 and 4 may be implemented independently or in combination.

[0156] The embodiment of the present invention further provides a forwarding control method, which is explained from the repeater side.

[0157] 5 is a schematic diagram of an example of a transmission control method according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:

[0158] Step 501: The mobile terminal of the repeater transitions from an RRC connected state to an RRC inactive state.

[0159] Step 502: The mobile terminal of the repeater in the RRC inactive state receives paging initiated by the core network.

[0160] Step 503: The forwarding unit of the repeater forwards the signal or does not forward the signal.

[0161] Unlike the paging cell initiated by the RAN described above, when a mobile terminal of a repeater in an RRC inactive state receives a paging initiated by the CN (CN paging), the repeater's forwarding unit may forward a signal or not forward a signal. For example, the repeater may continue to forward a signal using a method related to the embodiment of FIG. 2, or may turn off signal forwarding, not forward a signal, or stop forwarding. The embodiment of the present invention is not limited thereto. The overlapping content with the above embodiment will not be described.

[0162] The embodiment of the present invention further provides a forwarding control method, which is explained from the repeater side.

[0163] 6 is a schematic diagram of an example of a transmission control method according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps:

[0164] Step 601: A mobile terminal of a repeater performs cell selection or cell reselection, or initiates a connection re-establishment procedure, or initiates a connection establishment procedure.

[0165] Step 602: The forwarding unit of the repeater forwards the signal or does not forward the signal.

[0166] In step 601, the reason why the mobile terminal performs cell selection or cell reselection, or why it initiates a connection re-establishment procedure, or why it initiates a connection establishment procedure is not limited to satisfying the first condition above. In step 602, the forwarding unit of the repeater forwards a signal or does not forward a signal. For example, it may continue to forward a signal (first cell) using the method related to the embodiment of FIG. 2, or it may turn off signal forwarding, not forward a signal, or stop forwarding, and the embodiment of the present invention is not limited thereto. Description of content overlapping with the above embodiment will be omitted.

[0167] In some embodiments, unlike the embodiment of FIG. 4, when a repeater mobile terminal transitions to a non-RRC connected state, the repeater mobile terminal may perform cell selection or cell reselection. The repeater mobile terminal ignores cell barring or reservation indication information and / or unified access control configuration information in the cell system information. That is, cell barring or reservation indication information and / or unified access control configuration information in the cell system information does not apply to NCR. The cell barring or reservation indication information includes cellBarred, cellReservedForOperatorUse, cellReservedForOtherUse, cellReservedForFutureUse, and intraFreqReselection indications. cellBarred indicates whether a cell is in a barred state. cellReservedForOperatorUse indicates whether a cell is reserved for use by the operator. cellReservedForOtherUse indicates whether a cell is reserved for other use. cellReservedForFutureUse indicates whether a cell is reserved for future use. The intraFreqReselection indications indicates inter-frequency reselection indication information.

[0168] In some embodiments, the repeater mobile terminal will consider a cell broadcasting cell system information as a candidate cell for a cell selection or reselection procedure only if the cell system information indicates that a repeater is supported for the selected PLMN or SNPN.

[0169] In some embodiments, a repeater mobile terminal in an RRC connected state does not support cell-level mobility and / or only supports intra-cell beam-level mobility (does not support cell-level mobility). The NCR-MT (in RRC_CONNECTED) performs radio link monitoring (RLM) in the activated BWP based on the reference signals (SSB / CSI-RS) configured by the network and a signal quality threshold. SSB-based RLM is based on the SSB associated with the initial DL BWP, which may be the initial DL BWP or a DL BWP configuration including the SSB associated with the initial DL BWP. For other DL BWPs, RLM can only be performed based on CSI-RS. In the case of a DAPS handover, the NCR-MT continues to detect radio link failure in the source cell until the random access procedure in the target cell is successfully completed.

[0170] In some embodiments, the NCR-MT comprises: a second timer (radio problem timer) that starts after the physical layer indicates a radio problem expires (if the radio problem is resolved before the timer expires, the UE stops the timer), or A third timer that starts when a measurement report is triggered for a measurement ID for which the third timer is configured expires and another radio failure timer (e.g., the second timer mentioned above) is running, or If the random access process fails, or If RLC fails, or Declare a Radio Link Failure (RLF) if one of the following criteria is met: if a persistent uplink LBT failure / failure in shared spectrum channel access operation is detected;

[0171] In some embodiments, after RLF (of the serving cell / Pcell) is declared, the NCR-MT selects a suitable cell and initiates RRC re-establishment. If a suitable cell is not found within a certain time after RLF is declared, it enters the RRC idle state. The NCR-Fwd turns off forwarding, does not perform forwarding, stops forwarding, or continues forwarding. For example, the NCR-Fwd turns off forwarding, stops forwarding, or continues forwarding while the NCR-MT is performing cell selection. The NCR-MT turns off forwarding, does not perform forwarding, or stops forwarding when re-establishing the connection.

[0172] In some embodiments, for the RRC re-establishment connection procedure, the NCR-MT may initiate the procedure to continue the RRC connection if AS security is activated in RRC_CONNECTED and SRB2 is established. If AS security is not activated, the NCR-MT proceeds directly to RRC_IDLE without initiating the procedure and releases the reason "other". If AS security is activated and SRB2 is not established, the NCR-MT proceeds directly to RRC_IDLE without initiating the procedure and releases the reason "RRC connection failure".

[0173] In some embodiments, the mobile terminal of the repeater sends an RRC connection re-establishment request and sends an RRC setup complete message. The RRC setup complete message (RRCSetupComplete) includes repeater node indication information (ncr-NodeIndication). That is, if it is the NCR that initiates the RRC connection re-establishment, the RRC setup complete message (RRCSetupComplete) includes repeater node indication information (ncr-NodeIndication).

[0174] In some embodiments, the NCR-MT reports radio access capabilities. The capabilities are static, at least if required by the network. The network device may request the NCR-MT which capabilities to report based on bandwidth information. The NCR-MT capabilities may be represented by a capability ID and may be exchanged via NAS signaling and network signaling rather than in the UE capability structure. The NCR-MT may report its capabilities using UECapabilityEnquiry and UECapabilityInformation messages.

[0175] In some embodiments, it is optional or mandatory for the NCR-MT to support the UE capability discovery framework and associated signaling, or it is conditionally optional and / or conditionally mandatory under certain conditions. If the NCR-MT does not support the UE capability discovery framework, it is assumed that the NCR-MT capabilities are known to the network by other means (e.g., OAM).

[0176] In some embodiments, whether or not the NCR-MT supports the RRC inactive state is optional or mandatory, or conditionally optional under certain conditions and / or conditionally mandatory under certain conditions.

[0177] In some embodiments, whether the NCR (or NCR-Fwd) supports forwarding signals when the NCR-MT is in an RRC inactive state may be optional or mandatory, or conditionally optional and / or conditionally mandatory under certain conditions.

[0178] In some embodiments, the mobile terminal of the repeater transmits first capability information and / or second capability information to the network device, where the first capability information is used to indicate whether the mobile terminal of the repeater supports an RRC inactive state, and the second capability information is used to indicate whether a forwarding unit of the repeater supports forwarding of signals when the mobile terminal of the repeater is in an RRC non-connected state.

[0179] In some embodiments, the first capability information and the second capability information may be the same or different. "The same or different" includes whether the information names defined in the corresponding protocols are the same or different. The two capabilities may have some correlation. The following describes the RRC inactive state as an example.

[0180] For example, if the NCR-MT supports the RRC inactive state, the NCR (or NCR-Fwd) is obligated to support forwarding signals when the NCR-MT is in the RRC inactive state. For example, the NCR-MT transmits first capability information indicating that the NCR-MT supports RRC_INACTIVE, and second capability information indicating that the NCR (or NCR-Fwd) supports forwarding signals when the NCR-MT is in the RRC inactive state must or may not be transmitted. If the second capability information does not need to be transmitted, it can also be said that the first capability information is further used to indicate that the NCR (or NCR-Fwd) supports forwarding signals when the NCR-MT is in the RRC inactive state.

[0181] For example, the NCR-MT supports the RRC inactive state only if the NCR (or NCR-Fwd) supports forwarding signals when the NCR-MT is in the RRC inactive state. For example, the NCR-MT transmits second capability information indicating that the NCR (or NCR-Fwd) supports forwarding signals when the NCR-MT is in the RRC inactive state, and the first capability information indicating that the NCR-MT supports the RRC inactive state must or may not be transmitted. If the above first capability information does not need to be transmitted, it can also be said that the second capability information is further used to indicate that the NCR-MT supports the RRC inactive state.

[0182] In some embodiments, for NCR-MT, an SRB2 configuration without DRB / MRB is supported.

[0183] Specific embodiments of the above transfer control method have been described above, and therefore will not be described here. The above embodiments are merely illustrative of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, each of the above embodiments may be used alone, or one or more of the above embodiments may be used in combination.

[0184] <Example 2> An embodiment of the present invention provides a repeater, which may be, for example, the above-mentioned NCR, a network device or terminal device having a forwarding function, or one or more elements or components configured in the NCR, the network device, or the terminal device.

[0185] 7 is a schematic diagram of an example of a repeater according to an embodiment of the present invention. The principle of the problem-solving of the repeater is the same as that of the method of embodiment 1, so that the specific implementation may refer to the method of embodiment 1, and redundant explanations of similar contents will be omitted.

[0186] 7, the repeater 700 includes a mobile terminal 701 and a forwarding unit 702. The mobile terminal 701 and the forwarding unit 702 are functional entities, and the functions thereof may be realized by the same or different hardware modules.

[0187] The mobile terminal 701 transitions from an RRC connected state to an unconnected state, which includes an RRC inactive state or an RRC idle state.

[0188] The transfer unit 702 transfers the signal.

[0189] Alternatively, the mobile terminal 701 transitions from an RRC connected state to an unconnected state, which includes an RRC inactive state or an RRC idle state.

[0190] After the mobile terminal of the repeater transitions to the pre-RRC connected state, the forwarding unit 702 performs forwarding or does not perform forwarding.

[0191] Alternatively, the mobile terminal 701 performs cell selection or cell reselection, or initiates a connection re-establishment procedure, or initiates a connection establishment procedure.

[0192] The forwarding unit 702 forwards the signal or does not forward the signal.

[0193] Alternatively, the mobile terminal 701 receives paging initiated by the core network in the RRC inactive state.

[0194] The forwarding unit 702 forwards the signal or does not forward the signal.

[0195] Alternatively, the mobile terminal 701 transitions from an RRC connected state to an unconnected state, including an RRC inactive state or an RRC idle state, the mobile terminal does not perform cell selection or reselection, and / or a first timer is configured for the mobile terminal of the repeater.

[0196] The mobile terminal 701 and the forwarding unit 702 may be implemented by referring to the aspects of the first embodiment, and the description thereof will be omitted here.

[0197] 7 only exemplifies the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related technologies such as bus connections can be used. The various components or modules described above may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0198] The above-described embodiments are merely examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0199] Example 3 The embodiment of the present invention provides an information transmission method, and will be explained from the perspective of a network device. Explanation of the same content as in the first embodiment will be omitted.

[0200] 8 is a schematic diagram of an example of an information transmission method according to an embodiment of the present invention. As shown in FIG. 8, the method includes the following steps:

[0201] Step 801: A network device transmits a first RRC release message and / or other signaling different from the first RRC release message to a mobile terminal of a repeater. The first RRC release message and / or other signaling includes one or more of first information, second information, third information, information related to a first timer, first indication information, second indication information, third indication information, and fourth indication information. Each piece of information may refer to Example 1, and its description will be omitted here.

[0202] Note that the above-mentioned FIG. 8 merely exemplifies an embodiment of the present invention and is not limited thereto. For example, the execution order of each step may be adjusted as appropriate, and some other steps may be added or some steps may be deleted. Those skilled in the art may appropriately modify the above content and are not limited to the description of the above-mentioned FIG. 8.

[0203] Although the above only describes each step or process related to the present invention, the present invention is not limited thereto. The method according to the embodiment of the present invention may further include other steps or processes, and details of these steps or processes may be found in the related art.

[0204] The above-described embodiments are merely examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0205] Example 4 An embodiment of the present invention provides a network device.

[0206] 9 is a schematic diagram of an example of a network device according to an embodiment of the present invention. The principle of solving the problem of the network device is the same as that of the method of embodiment 3, so that the specific implementation may refer to the method of embodiment 3, and redundant explanations of the similar contents will be omitted.

[0207] As shown in FIG. 9, a network device 900 according to an embodiment of the present invention includes the following components:

[0208] The transmitter 901 transmits a first RRC release message and / or other signaling different from the first RRC release message to the mobile terminal of the repeater, where the first RRC release message and / or other signaling includes one or more of the first information, the second information, the third information, the information related to the first timer, the first indication information, the second indication information, the third indication information, and the fourth indication information.

[0209] The embodiment of the transmitting unit 901 may refer to the third embodiment, and the description thereof will be omitted here.

[0210] Although the above description only describes components or modules related to the present invention, the present invention is not limited thereto. The network device 900 according to the embodiment of the present invention may further include other components or modules. For specific details of these components or modules, please refer to the related art.

[0211] 9 only exemplarily illustrates the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related technologies, such as bus connections, can be used. The various components or modules described above may be implemented by hardware devices, such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0212] The above-described embodiments are merely examples of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0213] <Example 5> An embodiment of the present invention provides a communication system. Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention. As shown in Fig. 1, a communication system 100 includes a network device 101, a repeater 102, and a terminal device 103. For simplicity, Fig. 1 illustrates only one network device, one repeater, and one terminal device as an example, but the embodiment of the present invention is not limited thereto.

[0214] In the embodiments of the present invention, existing services or services that can be implemented in the future can be performed between the network device 101 and the terminal device 103. For example, these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), highly reliable and low latency communication (URLLC), and vehicle-to-everything (V2X) communication. The repeater 102 is configured to perform the forwarding control method described in the first embodiment, and the network device 101 is configured to perform the information transmission method described in the third embodiment, the contents of which are incorporated herein and will not be described again here.

[0215] An embodiment of the present invention further provides an electronic device, which is, for example, a repeater or a network device.

[0216] Fig. 10 is a schematic diagram of the configuration of an electronic device according to an embodiment of the present invention. As shown in Fig. 10, the electronic device 1000 may include a processor 1010 (e.g., a central processing unit (CPU)) and a memory 1020, which is connected to the processor 1010. The memory 1020 may store various data, and may further store an information processing program 1030, which is executed under the control of the processor 1010.

[0217] For example, the processor 1010 may execute a program to implement the transfer control method described in the first embodiment.

[0218] Also, for example, the processor 1010 may execute a program to realize the information transmission method described in the third embodiment.

[0219] 10, the electronic device 1000 may further include a transceiver 1040 and an antenna 1050. The functions of the above components are similar to those of the prior art, and a description thereof will be omitted here. The electronic device 1000 does not need to include all the units shown in FIG. 10. The electronic device 1000 may further include units not shown in FIG. 10, and prior art may be referenced.

[0220] An embodiment of the present invention further provides a computer-readable program that, when executed in a repeater, causes a computer to execute the transfer control method according to the first embodiment in the repeater.

[0221] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program causing a computer to execute the transfer control method described in embodiment 1 in a repeater when the program is executed.

[0222] An embodiment of the present invention further provides a computer-readable program, which, when executed in a network device, causes a computer to execute the information transmission method described in embodiment 2 in the network device.

[0223] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program, when executed, causing a computer to execute the information transmission method described in embodiment 2 in a network device.

[0224] The above-described apparatus and method of the present invention may be realized by hardware or a combination of hardware and software. The present invention relates to a computer-readable program that, when executed by a logic unit, causes the logic unit to implement the above-described apparatus or components, or to implement the above-described various methods or steps. The present invention also relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.

[0225] Each processing method in each device described with reference to the embodiments of the present invention may be implemented by 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 drawings, or one or more combinations of the functional block diagrams, may correspond to each software module in a computer program flow or each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be implemented by implementing these software modules in hardware, for example, using a field programmable gate array (FPGA).

[0226] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card inserted into the mobile terminal. For example, if a device (e.g., a mobile terminal) uses a relatively large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0227] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams illustrated in the figures may be implemented with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams illustrated in the figures may be implemented with, for example, a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other configuration.

[0228] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes may be made to the present invention without departing from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0229] The embodiments of the present invention include the following additions. (Appendix 1) A transfer control method applied to a repeater, comprising: a step of the repeater mobile terminal transitioning from an RRC connected state to an un-RRC connected state, the un-RRC connected state comprising an RRC inactive state or an RRC idle state; and a forwarding unit of the repeater forwarding the signal. (Appendix 2) The method of claim 1, further comprising the step of: a mobile terminal of the repeater receiving a first RRC release message, the first RRC release message being used to transition the mobile terminal of the repeater from an RRC connected state to an unconnected state. (Appendix 3) The method of claim 2, wherein the repeater mobile terminal receives the first RRC release message before transitioning from the RRC connected state to a non-RRC connected state. (Appendix 4) The method described in Supplementary Note 2, wherein the forwarding unit of the repeater forwards the signal after the mobile terminal of the repeater receives the first RRC release message and / or after the mobile terminal transitions to a non-RRC connected state. (Appendix 5) 5. A method according to any one of claims 1 to 4, wherein the cell to which the signal is forwarded by the repeater includes the first cell. (Appendix 5a) 5. The method of any one of claims 1 to 4, wherein the cells to which the signals are forwarded by the repeater are implementation dependent. (Appendix 6) 6. The method of claim 5, wherein the first cell is predefined or indicated. (Appendix 7) The first cell comprises: a first serving cell of the mobile terminal of the repeater, and / or 7. The method of claim 5 or 6, including a second serving cell of the repeater mobile terminal. (Appendix 8) 8. The method of claim 7, wherein the first serving cell and the second serving cell are the same cell or different cells. (Appendix 9) The method described in Supplementary Note 7 or 8, wherein the first serving cell refers to a cell to which the mobile terminal of the repeater is connected in an RRC connected state, and the second serving cell refers to a cell in which the mobile terminal of the repeater stays in a non-RRC connected state. (Appendix 10) 10. The method of any one of Supplementary Notes 7 to 9, wherein the first serving cell is the cell or primary cell (Pcell) to which the repeater's mobile terminal connected while in the RRC connected state, and / or the last cell or primary cell (Pcell) to which the repeater's mobile terminal connected while in the RRC connected state, and / or the cell or primary cell (Pcell) to which the repeater's mobile terminal connected before entering the non-RRC connected state, and / or the last cell or primary cell (Pcell) to which the repeater's mobile terminal connected before entering the non-RRC connected state, and / or the cell or primary cell (Pcell) to which the repeater's mobile terminal connected when receiving a first RRC release message, and / or the cell and / or primary cell (Pcell) for transmitting the first RRC release message. (Appendix 11) The second serving cell The cell in which the repeater's mobile terminal initially stays in the non-RRC connected state, and / or A method as claimed in any one of Supplementary Notes 7 to 10, wherein the repeater is a cell in which a mobile terminal first / initially stays after receiving a first RRC release message. (Appendix 12) 7. The method of claim 5 or 6, wherein the first cell is indicated by the first RRC release message or by other signaling different from the first RRC release message. (Appendix 13) 13. The method of claim 12, wherein the other signaling is received before or after the first RRC release message, or is received simultaneously with the first RRC release message. (Appendix 14) 14. The method of any of claims 6 to 13, wherein if the first cell is not indicated, the first cell is predefined. (Appendix 15) 15. A method according to any one of claims 1 to 14, wherein the cell to which the signal is forwarded by the repeater includes a second cell. (Appendix 16) 16. The method of claim 15, wherein the first cell and the second cell have different carrier frequencies and / or cell identifiers. (Appendix 17) 17. The method of claim 15 or 16, wherein the repeater forwards the signals of the first cell and the second cell simultaneously or at different times. (Appendix 18) 18. The method of any of claims 15 to 17, wherein the second cell is predefined or indicated. (Appendix 19) The second cell comprises: 19. The method of any of Supplementary Notes 15 to 18, further comprising a third serving cell for the repeater's mobile terminal, the third serving cell being a cell to which the repeater's mobile terminal reselects and stays. (Appendix 20) 20. The method of claim 19, wherein the third serving cell and the second serving cell have different carrier frequencies and / or cell identifiers. (Appendix 21) 21. The method of claim 20, wherein the second cell is indicated by the first RRC release message or by other signaling different from the first RRC release message. (Appendix 22) 22. The method of any one of claims 1 to 21, wherein the repeater forwarding unit uses a first beam when performing the forwarding. (Appendix 23) 23. The method of claim 22, wherein the first beam is predefined or directed. (Appendix 24) A method as described in Appendix 22 or 23, wherein the first beam is a beam used by a backhaul link when the forwarding unit of the repeater performs forwarding or a beam used by the network equipment side of the repeater. (Appendix 25) The first beam is the (last) beam used by the mobile terminal of the repeater to perform transmission and / or control link reception and / or transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in the RRC connected state, and / or the (last) beam used by the mobile terminal of the repeater or control link before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or The beam used by which the control link or the repeater's mobile terminal receives the first RRC release message, and / or A beam used by a PUSCH or PUCCH transmitting HARQ-ACK information for a PDSCH carrying the first RRC release message, and / or the control link or beam used by the mobile terminal of said repeater, and / or beams for monitoring the control channel, and / or the beam determined by the QCL assumption of the CORESET with the smallest ID (the configured CORESET for the first serving cell); and / or A beam determined by the spatial relationship of the PUCCH with the smallest (PUCCH resource) ID (configured CORESET for the first serving cell), and / or a (last) indicated unified TCI beam (in / for the first serving cell), and / or The beam indicated by the (last) first indication information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state), and / or the same beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or The beam determined based on the SSB identified / selected during the initial access procedure, and / or The beam determined based on the SSB identified / selected in the random access procedure, and / or 25. The method of any of claims 22 to 24, including a beam determined based on an SSB identified / selected in a recent random access procedure. (Appendix 25a) 26. The method of claim 25, wherein the initial access procedure, the random access procedure, and the most recent / last reception and / or transmission over a control link are performed before the repeater mobile terminal receives the first RRC release message. (Appendix 25b) 25. The method of claim 25 or 25a, wherein the recent / last reception over the control link comprises monitoring a PDCCH and / or receiving a PDSCH and / or CSI-RS and / or SSB, and the recent / last transmission over the control link comprises transmitting a PUSCH and / or PUCCH and / or SRS. (Appendix 25c) 26. The method of claim 25, wherein the CORESET with the smallest ID is the CORESET with the smallest ID in the first DL BWP and / or the first time position. (Appendix 25d) 26. The method of claim 25, wherein the PUCCH with the smallest PUCCH resource ID is the PUCCH with the smallest PUCCH resource ID in the first UL BWP and / or the second time position. (Appendix 25e) The method of claim 25c, wherein the first DL BWP is in a Pcell and / or the first DL BWP is an initial DL BWP, a default DL BWP, or a (last) active DL BWP. (Appendix 25f) 25c. The method of claim 25c, wherein the first time position comprises the most recent / last slot in which the repeater mobile terminal monitors one or more CORESETs. (Appendix 25g) 25d. The method of claim 25d, wherein the first UL BWP is in a Pcell, and / or the first UL BWP is an initial UL BWP, a default UL BWP, or a (last) active UL BWP. (Addendum 25h) The method of claim 25d, wherein the second time position includes the most recent / last slot in which the mobile terminal of the repeater transmits a PUCCH. (Appendix 26) 26. The method of claim 25, wherein the control channel includes a system information and / or paging channel. (Appendix 27) When the mobile terminal of the repeater performs reception or transmission, the first beam is a beam used by the control link or the mobile terminal of the repeater, and when the mobile terminal of the repeater does not perform reception or transmission, the first beam is: the last beam used to perform the transfer before receiving the first RRC release message and / or before transitioning to an unconnected state and / or while in an RRC connected state; and / or the last beam used by the mobile terminal of the repeater or control link before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or The beam used by which the control link or the repeater's mobile terminal receives the first RRC release message, and / or A beam used by a PUSCH or PUCCH transmitting HARQ-ACK information for a PDSCH carrying the first RRC release message, and / or the beam determined by the QCL assumption of the CORESET with the smallest ID (the configured CORESET for the first serving cell); and / or A beam determined by the spatial relationship of the PUCCH with the smallest (PUCCH resource) ID (configured CORESET for the first serving cell), and / or a (last) indicated unified TCI beam (in / for the first serving cell), and / or The beam indicated by the (last) first indication information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state), and / or the same beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or The beam determined based on the SSB identified / selected during the initial access procedure, and / or The beam determined based on the SSB identified / selected in the random access procedure, and / or 27. The method of claim 25 or 26, comprising a beam determined based on an SSB identified / selected in a recent random access procedure. (Appendix 28) 27. The method of claim 25 or 26, wherein the first beam includes a first downlink beam for performing downlink transmission and a first uplink beam for performing uplink transmission. (Appendix 29) 29. The method of claim 28, wherein the first uplink beam is determined by the first downlink beam. (Appendix 30) The first uplink beam comprises: the last uplink beam used by the mobile terminal of the repeater to perform (uplink) transfer and / or control link reception and / or transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state, and / or an uplink beam of time domain resources of the last uplink transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or the last uplink beam used by the mobile terminal of the repeater for the control link before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or the uplink beam of the last uplink transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or an uplink beam used by a PUSCH or PUCCH transmitting HARQ-ACK information for a PDSCH carrying the first RRC release message; and / or The (uplink) beam determined by the spatial relationship of the PUCCH (configured CORESET for the first serving cell) with the smallest (PUCCH resource) ID, and / or an uplink beam of the (last) indicated unified TCI (in / for the first serving cell); and / or The uplink beam indicated by the (last) first indication information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state), and / or the same uplink beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or An uplink beam determined based on the SSB identified / selected during the initial access procedure, and / or an uplink beam determined based on the SSB identified / selected in the random access procedure, and / or 29. The method of claim 28, including an uplink beam determined based on an SSB identified / selected in a recent random access procedure. (Appendix 31) The first downlink beam comprises: the last downlink beam used by the mobile terminal of the repeater to perform (downlink) transfer and / or control link or reception and / or transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state, and / or a downlink beam of time domain resources of the last downlink transmission before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or the last downlink beam used by the mobile terminal of the repeater for the control link before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or the downlink beam of the last downlink transmission (from the first serving cell) before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or the (downlink) beam used to receive the first RRC release message, and / or the control link or (downlink) beam used by the mobile terminal of said repeater, and / or (downlink) beams for monitoring the control channel, and / or the (downlink) beam determined by the QCL assumption of the CORESET with the smallest ID (the configured CORESET for the first serving cell); and / or a downlink beam of the (last) indicated unified TCI (in / for the first serving cell), and / or The downlink beam indicated by the (last) first indication information received (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state), and / or the same downlink beam as the beam used for the most recent / last reception and / or transmission via the control link, and / or A downlink beam determined based on the SSB identified / selected during the initial access procedure, and / or A downlink beam determined based on the SSB identified / selected in the random access procedure, and / or 31. The method of any of claims 28 to 30, including a downlink beam determined based on an SSB identified / selected in a recent random access procedure. (Appendix 32) A method according to any one of Supplementary Notes 27 to 31, wherein the first indication information is used to indicate a backhaul link beam to be used by the forwarding unit of the repeater to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during an RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during a non-RRC connected state. (Appendix 33) A method according to any of Supplementary Notes 22 to 24, wherein the first beam is indicated by second instruction information, the second instruction information being dedicated to indicating a backhaul link beam to be used by the repeater's forwarding unit to perform forwarding after the repeater's mobile terminal receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state, and / or the second instruction information is included in the first RRC release message. (Appendix 34) 34. The method of any one of claims 1 to 33, wherein the repeater forwarding unit uses a second beam when performing the forwarding. (Appendix 35) 35. The method of claim 34, wherein the second beam is predefined or directed. (Appendix 36) A method as described in Supplementary Note 34 or 35, wherein the second beam is a beam used by an access link when the forwarding unit of the repeater performs forwarding or a beam used by the UE side of the repeater. (Appendix 37) The second beam is the last (access link) beam used to perform the transfer before receiving the first RRC release message and / or before transitioning to an unconnected RRC state and / or while in an RRC connected state; and / or the (access link) beam used by the last time domain resource performing the transfer before receiving the first RRC release message and / or before transitioning to an unconnected RRC state and / or while in an RRC connected state; and / or a beam indicated by a third indication information (last) received and / or applied (before receiving the first RRC release message and / or before transitioning to an unconnected RRC state and / or while in an RRC connected state); and / or A method according to any of Supplementary Notes 34 to 36, including a downlink beam corresponding to the last time domain resource indicated by the (last) received third indication information (before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state). (Appendix 38) The method described in Supplementary Note 37, wherein the third instruction information is used to indicate the access link beam used by the repeater's forwarding unit to perform forwarding before the repeater's mobile terminal receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during the RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during the non-RRC connected state. (Appendix 39) The method described in Supplementary Note 37 or 38, wherein the third instruction information includes information for instructing time domain resources and information for instructing beams, and the forwarding unit of the repeater does not perform forwarding on any time domain resources other than those instructed (by the third instruction information). (Appendix 40) A method according to any of Supplementary Notes 34 to 36, wherein the second beam is indicated by fourth instruction information, the fourth instruction information being dedicated to indicating an access link beam to be used by the repeater's forwarding unit to perform forwarding after the repeater's mobile terminal receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state, and / or the fourth instruction information being included in the first RRC release message. (Appendix 41) 39. The method of claim 37 or 38, wherein the fourth indication information includes or does not include information for indicating a time domain resource. (Appendix 42) 42. The method of any of claims 1 to 41, wherein the forwarding unit of the repeater forwards signals according to a TDD configuration. (Appendix 43) The TDD configuration is: a first TDD configuration received by the mobile terminal of the repeater in system information broadcast by the first cell and / or the second cell and / or the first serving cell and / or the second serving cell and / or the third serving cell; and / or 43. The method of claim 42, including a second TDD configuration received by the repeater mobile terminal (in the first cell and / or first serving cell) (before receiving the first RRC release message). (Appendix 44) A repeater comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to realize a transfer control method according to any one of appendices 1 to 43. (Appendix 45) An information transmission method applied to a network device, comprising: the network device sending a first RRC release message and / or other signaling different from the first RRC release message to the mobile terminal of the repeater, wherein the first RRC release message and / or other signaling includes one or more of first information, second information, third information, first timer related information, first indication information, second indication information, third indication information, and fourth indication information; the first information is used to indicate a cell to be transferred; the second information is used to indicate whether to update or modify the cell to be transferred; The third information is used to indicate whether the forwarding unit of the repeater forwards a signal or does not forward a signal after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or in a non-RRC connected state; the first timer is started upon receiving the first RRC release message, and / or is stopped upon receiving an RRC recovery message or an RRC establishment message, or upon receiving the first RRC release message again; The first indication information is used to indicate a backhaul link beam used by a forwarding unit of the repeater to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during an RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during a non-RRC connected state; The second indication information is dedicated to indicating a backhaul link beam to be used by the forwarding unit of the repeater to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state; The third indication information is used to indicate an access link beam used by a forwarding unit of the repeater to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during an RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during a non-RRC connected state; A method in which the fourth instruction information is dedicated to indicating the access link beam to be used by the repeater's forwarding unit to perform forwarding after the repeater's mobile terminal receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state. (Appendix 46) 47. A network device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to implement the information transmission method described in Appendix 46.

[0230] The embodiments of the present invention further include the following notes. (Appendix 1) A transfer control method applied to a repeater, comprising: a step of the repeater mobile terminal transitioning from an RRC connected state to an un-RRC connected state, the un-RRC connected state comprising an RRC inactive state or an RRC idle state; and a step of a forwarding unit of the repeater performing forwarding or not performing forwarding after the mobile terminal of the repeater transitions to the non-RRC connected state. (Appendix 2) The method of claim 1, wherein the repeater mobile terminal receives a first RRC release message, and the first RRC release message is used to transition the repeater mobile terminal from an RRC connected state to an un-RRC connected state. (Appendix 3) The method according to claim 1 or 2, wherein the forwarding unit of the repeater performs forwarding after the mobile terminal of the repeater transitions to the non-RRC connected state, and the forwarding unit of the repeater does not forward a signal if / after a first condition is satisfied, and / or the mobile terminal of the repeater sends a connection recovery request message or a connection establishment request message. (Appendix 4) The method of claim 2, wherein if the repeater mobile terminal moves to a non-RRC connected state, the repeater mobile terminal does not perform cell selection or reselection, and / or a first timer is configured for the repeater mobile terminal. (Appendix 5) The first condition is: The repeater mobile terminal has transitioned to a non-RRC connected state and performed cell selection or reselection, and then found a more suitable cell; and / or The repeater's mobile terminal has changed its visiting cell after transitioning to a non-RRC connected state, and / or The repeater mobile terminal moves to a non-RRC connected state and performs cell selection or reselection, and then finds a more suitable cell, and the more suitable cell does not belong to the configured transferable cells; and / or the expiration of the first timer; and / or that the mobile terminal of the repeater has received a paging message for the mobile terminal; and / or The repeater's mobile terminal has detected a cell with better quality than the cell currently being forwarded to, and / or The method of claim 3, further comprising the repeater's serving cell not satisfying a third condition. (Appendix 6) 6. The method of claim 5, wherein the first condition further includes the repeater not updating a cell being forwarded. (Appendix 7) 7. The method of any of Supplementary Notes 4 to 6, wherein the first timer is started when a first RRC release message is received and / or stopped when an RRC recovery message or an RRC establishment message is received or when the first RRC release message is received again. (Appendix 8) 8. The method of any one of Supplementary Notes 4 to 7, wherein the information related to the first timer is carried by a first RRC release message. (Appendix 9) 6. The method of claim 5, wherein the paging is initiated by a RAN. (Appendix 10) The method of claim 3, wherein the connection recovery request message includes recovery reason information, or the connection establishment request message includes establishment reason information. (Appendix 11) 11. The method of claim 10, wherein the recovery reason information or the establishment reason information includes a reason defined for a repeater. (Appendix 12) The method according to Supplementary Note 1, wherein if a second condition is met, the forwarding unit of the repeater does not perform forwarding after the mobile terminal of the repeater transitions to a non-RRC connected state. (Appendix 13) The second condition is: The mobile terminal of the repeater receives information indicating that the forwarding unit of the repeater will not perform forwarding after the mobile terminal of the repeater transitions to an un-RRC connected state (until receiving the first RRC release message or transitioning to an un-RRC connected state, or before receiving the first release message or transitioning to an un-RRC connected state), or The method described in Supplementary Note 12, including the repeater not being provided with and / or activated with an access link beam configuration and / or being released and / or deactivated (until the first RRC release message is received or the repeater transitions to a non-RRC connected state, or before the repeater receives the first release message or the repeater transitions to a non-RRC connected state). (Appendix 14) The method described in Supplementary Note 13, wherein the access link beam configuration includes a periodic access link beam configuration and / or a semi-persistent access link configuration (when activated). (Appendix 15) The method of claim 1, further comprising the step of the repeater mobile terminal performing cell selection or reselection when the repeater mobile terminal transitions to a non-RRC connected state. (Appendix 16) The method of claim 15, wherein the mobile terminal of the repeater ignores cell barring or reservation indication information in the cell system information and / or unified access control configuration information. (Appendix 17) The method of claim 16, wherein the repeater mobile terminal selects a cell broadcasting the cell system information as a candidate cell for a cell selection or reselection procedure only if the cell system information indicates that a repeater is supported for the selected PLMN or SNPN. (Appendix 18) The method described in Supplementary Note 1, wherein the mobile terminal of the repeater in an RRC connected state does not support cell-level mobility and / or supports only intra-cell beam-level mobility. (Appendix 19) The method of claim 1, wherein the mobile terminal of the repeater sends an RRC connection re-establishment request and sends an RRC establishment complete message, and the RRC establishment complete message includes repeater node indication information. (Appendix 20) The mobile terminal of the repeater transmits the first capability information and / or the second capability information to a network device; The first capability information is used to indicate whether the mobile terminal of the repeater supports an RRC inactive state; The method of claim 1, wherein the second capability information is used to indicate whether the forwarding unit of the repeater supports signal forwarding when the mobile terminal of the repeater is in a non-RRC connected state. (Appendix 21) A transfer control method applied to a repeater, comprising: a mobile terminal of the repeater performing cell selection or cell reselection, or initiating a connection re-establishment procedure, or initiating a connection establishment procedure; and a forwarding unit of the repeater forwarding the signal or not forwarding the signal. (Appendix 22) A transfer control method applied to a repeater, comprising: a mobile terminal of the repeater in an RRC inactive state receiving paging initiated by a core network; and a forwarding unit of the repeater forwarding the signal or not forwarding the signal. (Appendix 23) The method described in Supplementary Note 22, wherein the mobile terminal of the repeater transitions to an RRC idle state and notifies the NAS. (Appendix 24) A repeater comprising: a memory in which a computer program is stored; and a processor, wherein the processor is configured to execute the computer program to realize a transfer control method described in any one of Supplementary Notes 1 to 23.

Claims

1. A repeater, A mobile terminal that transitions from an RRC connected state to an unconnected RRC state, the unconnected RRC state including an RRC inactive state or an RRC idle state; a transfer unit that transfers a signal.

2. The repeater according to claim 1, wherein the mobile terminal of the repeater further receives a first RRC release message, and the first RRC release message is used to transition the mobile terminal of the repeater from an RRC connected state to a non-RRC connected state.

3. The repeater according to claim 1 , wherein the cells to which signals are transferred by the repeater include a first cell and / or a second cell.

4. The repeater of claim 3 , wherein the first cell and / or the second cell are predefined or designated.

5. The first cell comprises: a first serving cell of the mobile terminal of the repeater, and / or 4. The repeater of claim 3, including a second serving cell for the repeater's mobile terminals.

6. The first serving cell means a cell to which the mobile terminal of the repeater is connected in an RRC connected state, and the second serving cell means a cell in which the mobile terminal of the repeater is staying in an unconnected RRC state, and / or 6. The repeater of claim 5, wherein the first serving cell is a cell or primary cell (Pcell) to which the repeater's mobile terminal connected while in the RRC connected state, and / or the last cell or primary cell (Pcell) to which the repeater's mobile terminal connected while in the RRC connected state, and / or the cell or primary cell (Pcell) to which the repeater's mobile terminal connected before entering the non-RRC connected state, and / or the last cell or primary cell (Pcell) to which the repeater's mobile terminal connected before entering the non-RRC connected state, and / or the cell or primary cell (Pcell) to which the repeater's mobile terminal connected when receiving a first RRC release message, and / or the cell and / or primary cell (Pcell) for transmitting the first RRC release message.

7. The second serving cell The cell in which the repeater's mobile terminal initially stays in the non-RRC connected state, and / or The repeater according to claim 5, wherein the repeater is a cell in which a mobile terminal of the repeater first / initially stays after receiving a first RRC release message.

8. The repeater according to claim 1 , wherein the forwarding unit of the repeater uses the first beam and / or the second beam when performing forwarding.

9. 9. The repeater of claim 8, wherein the first beam and / or the second beam are predefined or directed.

10. The repeater of claim 8, wherein the first beam is a beam used by a backhaul link or a beam used by the network equipment side of the repeater when the forwarding unit of the repeater performs forwarding, and / or the second beam is a beam used by an access link or a beam used by the UE side of the repeater when the forwarding unit of the repeater performs forwarding.

11. The first beam is Before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state, the beam used to perform transfers and / or control links or reception and / or transmissions by the mobile terminal of said repeater, and / or the control link or beam used by the mobile terminal of the repeater before receiving the first RRC release message and / or before transitioning to a non-RRC connected state and / or while in an RRC connected state; and / or a beam used to receive the first RRC release message, and / or A beam used by a PUSCH or PUCCH transmitting HARQ-ACK information for a PDSCH carrying the first RRC release message, and / or the control link or beam used by the mobile terminal of said repeater, and / or beams for monitoring the control channel, and / or the beam determined by the CORESET QCL assumptions with the smallest ID, and / or A beam determined by the spatial relationship of the PUCCH with the smallest ID, and / or a beam of a designated unified TCI, and / or a beam indicated by the received first indication information, and / or the same beam as the beam used for the most recent / last reception and / or transmission over the control link, and / or A beam determined based on the SSB identified / selected in the initial access procedure, and / or A beam determined based on the SSB identified / selected in the random access procedure, and / or 9. The repeater of claim 8, including a beam determined based on an SSB identified / selected in a recent random access procedure.

12. The repeater of claim 11, wherein the initial access procedure, the random access procedure, and the most recent / last reception and / or transmission via the control link are performed before the mobile terminal of the repeater receives the first RRC release message, and / or the most recent / last reception via the control link includes the most recent / last monitoring of a PDCCH and / or reception of a PDSCH and / or CSI-RS and / or SSB, and the most recent / last transmission via the control link includes the most recent / last transmission of a PUSCH and / or PUCCH and / or SRS.

13. 12. The repeater according to claim 11, wherein the CORESET with the smallest ID is the CORESET with the smallest ID in the first DL BWP and / or the first time position, and / or the PUCCH with the smallest PUCCH resource ID is the PUCCH with the smallest PUCCH resource ID in the first UL BWP and / or the second time position.

14. 14. The repeater of claim 13, wherein the first DL BWP is in a Pcell, and / or the first DL BWP is an initial DL BWP, a default DL BWP, or an active DL BWP, and / or the first time position includes a most recent / last slot in which a mobile terminal of the repeater monitors one or more CORESETs.

15. 14. The repeater according to claim 13, wherein the first UL BWP is in a Pcell, and / or the first UL BWP is an initial UL BWP, a default UL BWP, or an active UL BWP, and / or the second time position includes a most recent / last slot in which a mobile terminal of the repeater transmits a PUCCH.

16. The second beam is the last beam used to perform the transfer before receiving the first RRC release message and / or before transitioning to an unconnected RRC state and / or while in an RRC connected state; and / or the beam used by the last time domain resource performing the transfer before receiving the first RRC release message and / or before transitioning to an unconnected RRC state and / or while in an RRC connected state; and / or a beam indicated by the received and / or applied third indication, and / or The repeater according to claim 8 , comprising a downlink beam corresponding to the last time domain resource indicated by the received third indication information.

17. The repeater of claim 1 , wherein the forwarding section of the repeater forwards signals according to a TDD configuration.

18. The TDD configuration is a first TDD configuration received by the repeater mobile terminal in system information broadcast by the first cell and / or the second cell and / or the first serving cell and / or the second serving cell and / or the third serving cell; and / or 18. The repeater of claim 17, including a second TDD configuration received by a mobile terminal of the repeater.

19. A network device, a transmitter configured to transmit a first RRC release message and / or other signaling different from the first RRC release message to a mobile terminal of the repeater, the first RRC release message and / or other signaling including one or more of first information, second information, third information, information related to a first timer, first indication information, second indication information, third indication information, and fourth indication information; the first information is used to indicate a cell to be transferred; the second information is used to indicate whether to update or modify the transferred cell; The third information is used to indicate that after receiving the first RRC release message, and / or after transitioning to a non-RRC connected state, and / or in a non-RRC connected state, the forwarding unit of the repeater forwards a signal or does not forward a signal; the first timer is started upon receiving the first RRC release message, and / or is stopped upon receiving an RRC recovery message or an RRC establishment message, or upon receiving the first RRC release message again; The first indication information is used to indicate a backhaul link beam used by the repeater's forwarding unit to perform forwarding before the repeater's mobile terminal receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during the RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during the non-RRC connected state; The second indication information is dedicated to indicating a backhaul link beam to be used by the forwarding unit of the repeater to perform forwarding after the mobile terminal of the repeater receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state; The third indication information is used to indicate an access link beam used by the repeater forwarding unit to perform forwarding before the mobile terminal of the repeater receives the first RRC release message and / or before transitioning to a non-RRC connected state and / or during the RRC connected state and / or after receiving the first RRC release message and / or after transitioning to a non-RRC connected state and / or during the non-RRC connected state, A network device, wherein the fourth instruction information is dedicated to instructing the access link beam to be used by the repeater's forwarding unit to perform forwarding after the repeater's mobile terminal receives the first RRC release message and / or after transitioning to a non-RRC connected state and / or while in a non-RRC connected state.

20. A communication system comprising a repeater according to claim 1 and / or a network device according to claim 19.

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