Mobile IAB node

Abstract

Various solutions are discussed, for example, as to how to ensure that an integrated access and backhaul node is not handed over to a mobile cell provided by a mobile integrated access and backhaul node. For example, it may be ensured that the node does not report a mobile cell in neighbor cell measurements, or a mobile cell as a target cell will be ignored or handed over to a rejected mobile cell.

Description

Technical Field

[0001] Various example embodiments relate to wireless communications. Background Art

[0002] Wireless communication systems are evolving. For example, in a solution called Integrated Access and Backhaul (IAB), cellular coverage is extended from access nodes with wireless backhaul to base stations with fixed connections to the core network. Some of the access nodes providing wireless backhaul may be mobile access nodes, such as vehicle-mounted relays serving devices in a ring and / or vehicle. Summary of the invention

[0003] The independent claims define the scope.

[0004] According to one aspect, a device for a radio access network is provided, the device comprising: at least one processor; and at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the device to perform at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, or a seventh function. The first function at least comprises: receiving an indication indicating one or more mobile cells in the radio access network; determining configuration information for reporting measurements of one or more neighboring cells in the radio access network, wherein the one or more mobile cells are excluded from the one or more neighboring cells to be reported based on the indication; and sending the configuration information to at least one integrated access and backhaul node in the radio access network. The second function at least comprises: controlling one or more mobile cells in the radio access network; and sending an indication indicating one or more mobile cells to one or more first integrated access and backhaul host nodes in the radio access network. The third function includes at least: receiving first configuration information, the first configuration information is used to report the measurement of one or more neighboring cells; receiving an indication, the indication indicating one or more first cells to be excluded from the one or more neighboring cells to be reported; based on the indication and the first configuration information, determining second configuration information for reporting, the second configuration information excluding the indicated one or more first cells; and using the second configuration information at least for reporting the measurement of one or more neighboring cells. The fourth function includes at least: controlling a cell provided by at least a mobile integrated access and backhaul node; and sending at least an indication to the mobile integrated access and backhaul node, the indication indicating one or more cells to be excluded from the report reporting the measurement of one or more neighboring cells. The fifth function includes at least: sending identification information to a control device, the control device controlling at least a cell provided by the device, the identification information including a first identifier and a second identifier, the first identifier identifying a first identifier of a primary serving cell of the device, and the second identifier used by the device together with the primary serving cell. The sixth function includes at least: controlling a cell provided by at least a mobile integrated access and backhaul node; receiving a first identifier and a second identifier from the mobile integrated access and backhaul node, the first identifier identifying a primary service cell of the mobile integrated access and backhaul node, the second identifier being used by the mobile integrated access and backhaul node together with the primary service cell; receiving a switching request from a host node of the mobile integrated access and backhaul node, the switching request requesting switching of the mobile integrated access and backhaul node to a target cell, the switching request including context information; checking whether the first identifier and the second identifier match the context information in the switching request; and rejecting the switching in response to the first identifier and the second identifier matching the context information in the switching request.The seventh function includes at least: receiving information that at least identifies a control device, which controls one or more cells provided by one or more mobile integrated access and backhaul nodes; receiving a measurement report from a mobile integrated access and backhaul node among the one or more mobile integrated access and backhaul nodes, which measurement report reports measurements of one or more neighboring cells; using the information that identifies the control device, determining a first group of neighboring cells and a second group of neighboring cells, the first group includes neighboring cells controlled by the control device, and the second group includes neighboring cells not controlled by the control device; and based on the measurement results in the measurement report, determining whether to start switching of a mobile integrated access and backhaul node among the mobile integrated access and backhaul nodes to a cell in the second group.

[0005] According to one aspect, a method is provided, the method comprising: performing, by an apparatus, at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, or a seventh function.

[0006] According to one aspect, a computer-readable medium is provided, which includes program instructions stored thereon for at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, or a seventh function, the program instructions being used to execute the corresponding function.

[0007] According to one aspect, a computer program is provided, the computer program comprising instructions for causing an apparatus to perform at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, or a seventh function. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Embodiments are described below, by way of example only, with reference to the accompanying drawings, in which:

[0009] Figure 1 An exemplary wireless communication system is illustrated;

[0010] Figure 2 and Figure 3 An exemplary IAB architecture is illustrated;

[0011] Figures 4 to 9 An example of information exchange is illustrated;

[0012] Fig.10 is a flow chart illustrating example functionality; and

[0013] Fig.11 and Fig.12 is a schematic block diagram. DETAILED DESCRIPTION

[0014] The following embodiments are presented only as examples. Although the specification may mention "an", "one" or "some" embodiments and / or examples in several locations, this does not necessarily mean that each such mention refers to (multiple) identical embodiments or examples, nor does it necessarily mean that a particular feature is only applicable to a single embodiment and / or a single example. The individual features of different embodiments and / or examples may also be combined to provide other embodiments and / or examples. In addition, the words "comprising" and "including" should be understood to be not limiting that the described embodiments are only composed of those features mentioned, and such embodiments also include features / structures that are not specifically mentioned. In addition, although the terms including ordinal numbers (such as "first", "second", etc.) may be used to describe various elements, structural elements are not limited by these terms. These terms are only used to distinguish an element from other elements. For example, without departing from the scope of the present disclosure, a first signal may be referred to as a second signal, and similarly, a second signal may also be referred to as a first signal.

[0015] In the following, different exemplary embodiments will be described using a radio access architecture based on Advanced Long Term Evolution (LTE-Advanced, LTE-A) or New Radio (NR, 5G) as an example of an access architecture to which the embodiments may be applied, however, the embodiments are not limited to such architectures. It is obvious to a person skilled in the art that the embodiments may also be applied to other types of communication networks with appropriate components by appropriately adjusting the parameters and processes. Some examples of other options for suitable systems are Universal Mobile Telecommunications System (UMTS) Radio Access Network (UTRAN or E-UTRAN), Long Term Evolution (LTE, same as E-UTRA), Wireless Local Area Network (WLAN or WiFi), Worldwide Interoperability for Microwave Access (WiMAX), Personal Communications Service (PCS), Wideband Code Division Multiple Access (WCDMA), systems using Ultra-Wideband (UWB) technology, sensor networks, mobile ad hoc networks (MANETs), and Internet Protocol Multimedia Subsystem (IMS), or any combination thereof.

[0016] Figure 1 An example of a simplified system architecture is depicted, showing only some elements and functional entities, which are all logical units, the implementation of which may differ from what is shown. Figure 1 The connections shown are logical connections; the actual physical connections may be different. It is obvious to those skilled in the art that the system may also generally include in addition to Figure 1 Other functions and structures than those shown.

[0017] However, the embodiments are not limited to the system 100 given as an example, but a person skilled in the art may apply the solution to other communication systems having the necessary characteristics.

[0018] Figure 1 The example of FIG. 1 shows a portion of an exemplary radio access network.

[0019] Figure 1 User equipment 101, 101 'is shown, which is configured to be wirelessly connected to an access node (such as (e / g) NodeB) providing the cell on one or more communication channels in the cell. The physical link from the user equipment to the (e / g) NodeB is called an uplink or reverse link, and the physical link from the (e / g) NodeB to the user equipment is called a downlink or forward link. It should be understood that the (e / g) NodeB or its functions can be implemented by using any node, host, server or access point entity suitable for such purpose.

[0020] The communication system typically includes more than one (e / g)NodeB, in which case the (e / g)NodeBs may also be configured to communicate with each other via wired or wireless links designed for this purpose. These links may be used for signaling purposes. (e / g)NodeB is a computing device configured to control the radio resources of the communication system to which it is coupled. NodeB may also be referred to as a base station, access point, or any other type of interface device, including a relay station capable of operating in a wireless environment. (e / g)NodeB includes or is coupled to a transceiver. From the transceiver of the (e / g)NodeB, a connection is provided to an antenna unit, which establishes a bidirectional radio link to the device. The antenna unit may include multiple antennas or antenna elements. (e / g)NodeB is also connected to a core network 105 (CN or next generation core NGC). Depending on the system, the counterpart on the CN side may be a serving gateway (S-GW, routing and forwarding user data packets), a packet data network gateway (P-GW, used to provide a connection between the user equipment (UE) and an external packet data network), a mobility management entity (MME), or a user plane function (UPF), or an access and mobility management function (AMF), etc.

[0021] A user equipment (also referred to as UE, user equipment, user terminal, terminal device, etc.) illustrates a type of device to which resources on the air interface are allocated and assigned, and therefore any features described herein using the user equipment may be implemented using a corresponding device (such as a relay node). An example of such a relay node is a layer 3 relay (self-backhaul relay) toward a base station.

[0022] A user device generally refers to a computing device (e.g., a portable computing device), which includes wireless mobile communication devices with or without a subscriber identity module (SIM), including but not limited to the following types of devices: mobile stations (mobile phones), smart phones, personal digital assistants (PDAs), handsets, devices using wireless modems (alarm or measurement devices, etc.), portable computers and / or touch screen computers, tablet computers, game consoles, laptops, and multimedia devices. It should be understood that a user device can also be an almost exclusive uplink-only device, an example of which is a camera or video camera that loads images or video clips to a network. A user device can also be a device with the ability to operate in an Internet of Things (IoT) network, in which an object can have the ability to transmit data over a network without human-to-human or human-to-computer interaction, such as for smart grids and connected vehicles. A user device can also use the cloud. In some applications, a user device can include a user-portable device with a radio component (such as a watch, headphones, glasses, other wearable accessories or wearable devices), and the calculation is performed in the cloud. A user device (or in some embodiments, a layer 3 relay node) is configured to perform one or more of the user device functions. User equipment may also be referred to as a subscriber unit, a mobile station, a remote terminal, an access terminal, a user terminal, or a user equipment (UE), to name a few names or devices. In addition, it should be understood that the number of receiving and / or transmitting antennas in a user equipment may vary depending on the implementation and / or type of the user equipment.

[0023] The various techniques described herein may also be applied to cyber-physical systems (CPS) (systems of cooperating computing elements that control physical entities). CPS can enable the implementation and utilization of a large number of interconnected ICT devices (sensors, actuators, processor microcontrollers, etc.) embedded in different locations in physical objects. Mobile cyber-physical systems are a subcategory of cyber-physical systems in which the physical system in question has inherent mobility. Examples of mobile physical systems include mobile robots, and electronic devices transported by humans or animals.

[0024] Furthermore, although the apparatus is depicted as a single entity, different units, processors and / or memory units may be implemented ( Figure 1 Not all are shown).

[0025] 5G is able to use multiple input multiple output (MIMO) antennas, many more base stations or nodes than LTE (the so-called small cell concept), including macro sites that collaborate with smaller base stations and adopt multiple radio technologies, depending on service requirements, use cases and / or available spectrum. 5G mobile communications support a variety of use cases and related applications, including video streaming, augmented reality, different data sharing methods and various forms of machine type applications, such as (massive) machine type communications (mMTC), including vehicle safety, different sensors and real-time control. 5G is expected to have multiple radio interfaces, i.e., below 6GHz, cmWave and mmWave, and also be integrated with existing conventional radio access technologies such as LTE. Integration with LTE can be implemented as a system, at least in the early stages, in which macro coverage is provided by LTE and 5G radio interface access comes from small cells by aggregation to LTE. In other words, 5G plans to support both inter-RAT operability (such as LTE-5G) and inter-RI operability (inter-radio interface operability, such as cmWave below 6GHz, cmWave below 6GHz, mmWave). One of the concepts considered for use in 5G networks is network slicing, in which multiple independent and dedicated virtual subnets (network instances) can be created in the same infrastructure to run services with different requirements for latency, reliability, throughput and mobility.

[0026] The current architecture in LTE networks is fully distributed in the radio and fully centralized in the core network. Low-latency applications and services in 5G require content to be close to the radio, which leads to local bursting and multi-access edge computing (MEC). 5G enables analysis and knowledge generation to be performed at the data source. This approach requires the use of resources that may not be continuously connected to the network, such as laptops, smartphones, tablets, and sensors. MEC provides a distributed computing environment for application and service hosting. It also has the ability to store and process content near cellular subscribers to speed up response time. Edge computing covers a wide range of technologies such as wireless sensor networks, mobile data collection, mobile signature analysis, collaborative distributed peer-to-peer self-organizing networks and processing (also classified as local cloud / fog computing and grid / mesh computing), dew computing, mobile edge computing, cloudlet, distributed data storage and retrieval, autonomous self-healing networks, remote cloud services, augmented and virtual reality, data caching, Internet of Things (massive connectivity and / or latency critical), critical communications (autonomous vehicles, traffic safety, real-time analysis, time-critical control, healthcare applications).

[0027] The communication system may also be capable of communicating with other networks, such as the public switched telephone network or the Internet 106, or utilizing services provided by them. The communication network may also be capable of supporting the use of cloud services, for example, at least a portion of the core network operations may be provided as a cloud service (this is in the Figure 1 The communication system may also include a central control entity or the like that provides facilities for networks of different operators to collaborate, for example in spectrum sharing.

[0028] Edge cloud can be introduced into the radio access network (RAN) by utilizing network function virtualization (NVF) and software defined networking (SDN). Using edge cloud can mean that access node operations will be performed at least partially in servers, hosts or nodes that are operatively coupled to a remote radio head or base station including the radio part. Node operations can also be distributed among multiple servers, nodes or hosts. The application of cloudRAN architecture enables RAN real-time functions to be performed on the RAN side (in distributed units DU 102) and non-real-time functions to be performed in a centralized manner (in central units CU 104).

[0029] It should also be understood that the workload distribution between core network operations and base station operations may be different from LTE, or even non-existent. Some other technological advances that may be used are big data and all-IP, which may change the way networks are built and managed. 5G (or New Radio NR) networks are designed to support multiple hierarchical structures, where MEC servers can be placed between the core and the base station or nodeB (gNB). It should be understood that MEC can also be applied to 4G networks.

[0030] 5G can also make use of satellite communications to enhance or supplement the coverage of 5G services, for example by providing backhaul. Possible use cases are providing service continuity for machine-to-machine (M2M) or Internet of Things (IoT) devices, or for passengers on board, or ensuring service availability for critical communications and future rail / maritime / aeronautical communications. Satellite communications can make use of geostationary orbit (GEO) satellite systems, as well as low earth orbit (LEO) satellite systems, in particular mega constellations (systems in which hundreds of (nano) satellites are deployed). Each satellite 103 in a mega constellation can cover several satellite-enabled network entities creating a ground cell. The ground cell can be created by a ground relay node 102, or by a gNB located on the ground or in a satellite.

[0031] It is obvious to a person skilled in the art that the depicted system is only an example of a part of a radio access system, and in practice, the system may include multiple (e / g)NodeBs, a user equipment may access multiple radio cells, and the system may also include other devices, such as physical layer relay nodes or other network elements. At least one of the (e / g)NodeBs may be a home (e / g)NodeB. In addition, in a geographical area of ​​the radio communication system, a plurality of different kinds of radio cells and a plurality of radio cells may be provided. The radio cells may be macro cells (or umbrella cells), which are large cells with a diameter typically up to tens of kilometers, or smaller cells, such as micro cells, femto cells, or pico cells. Figure 1 The (e / g)NodeB can provide any type of these cells. A cellular radio system can be implemented as a multi-layer network including several types of cells. Typically, in a multi-layer network, one access node provides one or more cells of one type, and thus multiple (e / g)NodeBs are required to provide such a network structure.

[0032] In order to meet the needs of improving the deployment and performance of communication systems, the concept of "plug and play" (e / g) NodeB is introduced. Usually, in addition to the home (e / g) NodeB (H(e / g) NodeB), the network that can use "plug and play" (e / g) NodeB also includes the home nodeB gateway or HNB-GW ( Figure 1 The HNB gateway (HNB-GW) usually installed in the operator's network can aggregate services from a large number of HNBs back to the core network.

[0033] 6G networks are expected to adopt flexible decentralized and / or distributed computing systems and architectures and ubiquitous computing, based on mobile edge computing, artificial intelligence, short packet communications and blockchain technology, to achieve local regulatory licensing, spectrum sharing, infrastructure sharing and intelligent automation management. The main features of 6G will include intelligent interconnection management and control functions, programmability, integrated sensing and communication, reduced energy footprint, trusted infrastructure, scalability and affordability. In addition, 6G also targets new use cases, including integrating positioning and sensing capabilities into system definitions to unify the user experience of the physical and digital worlds.

[0034] Integrated access and backhaul (IAB) provides an option for flexible radio access network expansion. Integrated access and backhaul has two types of logical network entities, namely, an integrated access and backhaul (IAB) host node (or simply host node), and an integrated access and backhaul (IAB) node. An IAB node provides one or more cells and can provide (multiple) network connections to user equipment served in one or more cells. The host node provides access to the core network to the IAB node, and provides one or more cells that can serve the IAB node and user equipment. It is assumed that the host node is a fixed node with wired access to the core network. In 5G and above, it is envisioned that integrated access and backhaul will also support mobile integrated access and backhaul (IAB) nodes, such as vehicle-mounted relays. It is further envisioned that a mobile IAB node should not provide backhaul to another IAB node. The IAB architecture supporting mobile IAB nodes can be a multi-hop architecture (in Figure 2 ), or a single-hop architecture (shown at a very general level in Figure 3 ). Figure 2 and Figure 3 In both, the split architecture and operating entities using the principles and terminology of 5G technology are disclosed without limiting the examples to 5G and the terminology used.

[0035] refer to Figure 2 In the example of the multi-hop IAB architecture 200 shown, the mobile IAB node 201 is connected to the host node (IAB host node) through two hops via the non-mobile (fixed) IAB node 202. The host node 203 has a wired connection to the core network (e.g., to the next generation core network (NGC) 205), and the host node provides multi-hop support (series / cascade nodes). The IAB node 202 represents a parent node (parent IAB node), which is an IAB node that provides a radio link toward the core network (the link can provide a hop toward the core network). The mobile IAB node 201 represents a child node (child IAB node), a hop to the child node is provided, and the parent node provides a backhaul to the child node. The non-mobile IAB node can be both a parent node and a child node.

[0036] The host node 203 is configured to support integrated access and backhaul, and at least hosts the central unit part (CU) 203-2 of the IAB nodes 201, 202, and the distributed unit part (DU) 203-1 of the IAB node 202, that is, the host node supports integrated access and backhaul to non-mobile IAB nodes and mobile IAB nodes, and access user equipment 204a, 204b, 204c. The central unit part (CU) 203-2 can be configured to run the radio resource control (RRC) layer and perform control functions according to the radio access network protocol and definition. The distributed unit part 203-1 in the host node can be configured to run the lower layer 2 protocol layer (e.g., the backhaul adaptation protocol (BAP) layer), and the physical layer (PHY) below layer 2.

[0037] IAB nodes 201, 202 are access nodes (network devices) that provide wireless connections to host nodes 203 to served user equipment 204a, 204b directly or via one or more IAB nodes (i.e., through one or more hops from one IAB node to another IAB node) in a radio access network. This means that a non-mobile (fixed) IAB node 202 can provide a shared link to a served user equipment and / or to one or more IAB nodes. In the example shown, IAB nodes 201, 202 include distributed unit parts (DU) 201-1, 202-1, and collocated mobile terminal parts (MT) 201-2, 202-2. The distributed unit part (DU) can be configured to perform and / or support functions similar to those of the distributed unit part in the host node. The mobile terminal part (MT) 201-1, 202-1 is configured to act on the distributed unit part (DU) of the parent node. Therefore, the mobile terminal part (MT) 201-1, 202-1 can be configured to exchange information with the distributed unit part in the parent node using, for example, a radio link control protocol, and / or a backhaul adaptation protocol. Basically, the mobile terminal part sends / receives transmission to / from the parent IAB node, and more precisely, from the distributed unit (including the host node) in the parent IAB node, and the distributed unit part sends / receives transmission to / from the child IAB node and the served user equipment. In addition, the central unit part (CU) 203-2 can use application layer protocol signaling messages (e.g., F1AP messages) to exchange control information with the distributed unit parts (DU) 201-1, 202-1.

[0038] For mobility management of served user equipment 204a, 204b, 204c and mobile IAB node(s) 201, the core network 205 comprises a mobility management entity, eg a device comprising access and mobility management functionalities.

[0039] In summary, in the multi-hop architecture 200, the core network interface terminates at the host node 203, and relaying is a radio access network function. This includes tunneling for full F1-C signaling (F1AP), or a subset thereof, or corresponding control signaling within the radio access network, between CU 203-2 and DU 201-1.

[0040] refer to Figure 3 In the single-hop IAB architecture 300, the mobile IAB node 201 is connected to a host node 303 via one hop, which may be an IAB capable node, as in a multi-hop architecture, or may be a non-IAB capable node. In both cases, the host node may be a fixed node. Furthermore, in the single-hop IAB architecture 300, there is a centralized mobile m-CU 301-2, and a mobile IAB specific user plane function m-UPF 301-1 connected to the centralized mobile m-CU 301-2. The m-CU and (multiple) m-UPFs may be located in the cloud 301, as in Figure 3 In the example illustrated in , and / or collocated in the host node 303. The centralized mobile m-CU 301-2 is configured to control the mobile IAB node 201. The backhaul from the mobile IAB node 201 can be established via an end-to-end user plane connection, for example by means of a PDU session established between the mobile terminal part (MT) 201-2 and the mobile IAB specific user plane function m-UPF 301-1. In addition, the centralized mobile m-CU 301-2 can exchange control information with the distributed unit part (DU) 201-1 using application layer protocol signaling messages (e.g., F1AP messages). If the host node 303 is configured to support integrated access and backhaul, routing using the backhaul adaptation protocol (BAP) can be terminated to the host node.

[0041] although Figure 3 Not shown in the figure, but in the single-hop IAB architecture, the central unit part 303 - 2 can be located in the cloud 301 , ie, not in the host node 303 .

[0042] In summary, in the single-hop architecture 300, the mobile IAB node 201, or more precisely the mobile terminal part (MT) 201-2, can have a radio resource control connection with the host node 303, more precisely with the central unit 303-2 in the host node 303. In addition, the control connection (e.g., F1 connection) from the m-CU 301-2 to the mobile IAB node 201 is transparent to the radio access network. This means that when the mobile IAB node 201 switches from the serving host node to the target host node, the backhaul link change can be performed like a handover of the user equipment, while the session and control connection to the m-UPF 301-1 (e.g., a tunnel for full F1-C signaling (F1AP) or a subset thereof) is still between the m-CU 301-2 and the DU 201-1.

[0043] Figures 4 to 9 Different examples of how to facilitate information exchange in which a mobile IAB node does not become a parent node in different scenarios are illustrated. Figure 4 and Figure 5 The examples in are described assuming a multi-hop architecture (even though no multi-hop is shown), and Figures 6 to 9 The examples in assume a single-hop architecture, but do not limit these examples to such an architecture. Figures 4 to 9 In the present invention, the term "s host" or "host CU" is used for the current serving host node, for example, it can be a base station operating as an integrated access and backhaul host node, such as a gNB, or a central unit thereof, which is at least configured to control at least the served IAB node, including the cells provided by the served IAB node, and possibly provide access to at least the served IAB node. The term "n host" is used for neighboring host nodes. The term "mobile cell" refers to a cell provided by a mobile integrated access and backhaul (IAB) node, i.e. an m-IAB node, and the term "cell" covers mobile and non-mobile cells. The term "m-CU" covers a control device (control node) that controls a mobile cell, such as a gNB consisting of a central unit. In addition, in Figures 4 to 8 In the examples shown, radio resource connection establishment signaling between the serving host node and the IAB node / mobile IAB node is not illustrated, these examples illustrate the information exchange that may occur afterwards.

[0044] refer to Figure 4 , the neighboring host node (n host) sends (message 4-1) to its neighboring host nodes (including the serving host node s host) an indication indicating one or more mobile cells. Message 4-1 may be an "NG-RAN node configuration update" according to XnAP, the message including a new indication of "cells provided by the mobile IAB node". The indication may be, for example, a new information element listing the mobile cell identifiers.

[0045] When receiving the indication, the s host confirms the indication by sending message 4-2. Message 4-2 may be an "NG-RAN Node Configuration Update Confirmation" according to XnAP. In addition, in box 4-3, the s host configures one or more IAB nodes controlled by the s host so that they do not report measurement results on the mobile cell. In other words, based on the indication, the s host determines configuration information for at least one of the controlled IAB nodes, which is used to report measurements of one or more neighboring cells, excluding the indicated one or more mobile cells. (The configuration information may be referred to as a measurement report configuration.) In other words, the s host determines a configuration for a neighboring cell measurement report for a group of neighboring cells, and the group of neighboring cells to be reported does not include the indicated one or more mobile cells. The configuration is then sent (message 4-4) to at least one IAB node. Message 4-4 may be an "RRCReconfiguration" according to RRC (Radio Resource Control), which includes a measurement report configuration excluding one or more cells of the mobile IAB node. Although Figure 4 Not shown in the figure, but the IAB node confirms the message 4-4, for example, by sending "RRCReconfigurationComplete" according to RRC.

[0046] The IAB node performs neighbor cell measurements according to the configuration. Cells of the mobile IAB node may not be measured because they are excluded from message 4-4 or not included in message 4-4. In the example shown, the event-triggered measurement report (box 4-5) is met, and the measurement report (excluding the measurement results on the mobile cell) is sent (message 4-6) to the serving host node (s host). Message 4-6 can be a "MeasurementReport" according to RRC. Then, based on the measurement results in message 4-6, the s host can make a handover (HO) decision in box 4-7, which is based on the non-mobile cell.

[0047] refer to Figure 5As part of the radio resource connection establishment signaling or as a response to a capability query, the serving host node (s host) may receive information indicating a mobile IAB node from an integrated access and backhaul node in a controlled integrated access and backhaul node (message 5-1). Message 5-1 may be "RRCSetupComplete" according to RRC, or "UECapabilityInformation" with a new indication of a mobile IAB or mobile IAB MT. In the example shown, the s host is configured to forward (message 5-2) the indication to its neighboring host node, which may then confirm (message 5-3) the indication. Message 5-2 may correspond to message 4-1, and message 5-3 may correspond to information 4-2. It should be understood that in another implementation, no message 5-2 is sent.

[0048] In addition, in box 5-4, the s host configures one or more IAB nodes controlled by the s host so that they do not report measurement results on the mobile cell. In other words, based on the indication, the s host determines configuration information for at least one of the controlled IAB nodes, which is used to report measurements of one or more neighboring cells in the radio access network, excluding the indicated one or more mobile cells. In other words, the s host determines the configuration of the neighboring cell measurement report for a group of neighboring cells, and the group of neighboring cells to be reported does not include one or more mobile cells. Then, the configuration is sent (message 5-5) to at least one IAB node. Message 5-5 may correspond to message 4-4 and include a measurement report configuration that excludes one or more cells of the mobile IAB node. Although Figure 5 Not shown in the figure, but the IAB node confirms the message 5-5, for example by sending "RRCReconfigurationComplete" according to RRC.

[0049] The IAB node performs neighbor cell measurements according to the configuration. Cells of the mobile IAB node may not be measured because they are not included in message 5-5. In the example shown, the event-triggered measurement report (box 5-6) is satisfied, and the measurement report (excluding the measurement results on the mobile cell) is sent (message 5-7) to the serving host node (s host). Message 5-7 may be a "MeasurementReport" according to RRC. Then, based on the measurement results in message 5-7, the s host may make a handover (HO) decision in box 5-8, the decision being based on the non-mobile cell.

[0050] It should be understood that the s host node can receive information indicating mobile cells from a mobile IAB controlled by the s host and from neighboring host cells, and the s host node can be configured to perform combined boxes 4-3 and box 5-4, that is, to ensure that message 4-4 or 5-5 excludes all mobile cells known to the s host through messages 4-1 and 5-1.

[0051] The above information exchange ensures that a handover decision is not made to the mobile IAB node, thereby ensuring that the mobile IAB node will not become the parent IAB node. In addition, these examples enable more efficient operation because the IAB node can skip neighbor cell measurements on the mobile cell. The same applies to Figure 6 and Figure 7 Information exchange for a single-hop architecture is shown.

[0052] refer to Figure 6 , the central unit part of the serving host node (host CU) configures one or more IAB nodes controlled by the host CU in box 6-1 to report measurements of one or more neighboring cells. In other words, the host CU determines the configuration information of the neighboring cell measurement report that reports the measurement results of one or more neighboring cells (a first group of neighboring cells) for at least one of the served IAB nodes. In the example shown, the IAB node is a mobile IAB node (M-IAB node). Then, the host CU sends (message 6-2) configuration information (first configuration information) to the mobile IAB node, and the mobile IAB node confirms (message 6-3) the first configuration information. Message 6-2 can be "RRCReconfiguration" according to RRC (Radio Resource Control), which includes the measurement report configuration, and message 6-3 can be "RRCReconfigurationComplete" according to RRC. Although Figure 6 Although not shown in the figure, the MT part in the m-IAB node can also perform reception and confirmation.

[0053] In addition, the m-IAB node receives (message 6-4) an indication from the m-CU indicating one or more first cells, the first cell being a cell that will be excluded from the report reporting the measurement of one or more neighboring cells. In other words, the first cell will not be reported in the neighboring cell measurement. One or more first cells may include (multiple) cells controlled by the m-CU and (multiple) cells controlled by another m-CU (for example, indicated to the m-CU via the Xn interface). The first cell may be a cell listed on the blacklist, or may be interpreted as a blacklist cell. A blacklist cell refers to a cell that is not suitable for event evaluation or measurement reporting. For example, a mobile cell may be indicated as a first cell. The m-IAB node confirms (message 6-5) the indication indicating one or more second cells. Messages 6-4 and 6-5 may be application protocol signaling messages sent to / from the CU portion in the m-IAB. Message 6-4 may be a new information indication of a cell that the MT portion of the mobile IAB node will not measure / report according to the "GNB-CU Configuration Update" of F1AP. Message 6-5 may be a "GNB-CU configuration update confirmation" according to F1AP. The CU part relays the information of the cell not to be measured to the MT part as intra-node information exchange, such as Figure 6 as shown in .

[0054] In box 6-6, the mobile IAB node determines second configuration information for reporting (for neighboring cell measurement reporting) based on the indication received in message 6-4 and the first configuration information received in message 6-2, and the second configuration information does not include any first cell to be reported. In other words, the mobile IAB node combines the information received in messages 6-2 and 6-4, and the second configuration information excludes one or more first cells. The mobile IAB node performs neighboring cell measurements according to the configuration. In the example shown, the event-triggered measurement report (box 6-7) is satisfied, and the measurement report (excluding the measurement results on the first cell) is sent (message 6-8) to the host CU. Message 6-8 can be a "MeasurementReport" according to RRC. Then, based on the measurement results in message 6-8, the host CU can make a handover (HO) decision in box 6-9, the decision being based on available cells, for example, the available cells do not include mobile cells.

[0055] refer to Figure 7, the central unit part of the serving host node (host CU) configures one or more IAB nodes controlled by the host CU in box 7-1 to make them report measurements on neighboring cells. In other words, the host CU determines configuration information for at least one of the served IAB nodes, and the configuration information is used to report measurements of one or more neighboring cells (a first group of neighboring cells). In the example shown, the IAB node is a mobile IAB node (M-IAB node). The host CU then sends (message 7-2) configuration information (first configuration information) to the mobile IAB node, and the mobile IAB node confirms (message 7-3) the first configuration information. Message 7-2 can be "RRCReconfiguration" according to RRC (Radio Resource Control), which includes the measurement report configuration, and message 7-3 can be "RRCReconfigurationComplete" according to RRC. Although Figure 7 Although not shown in the figure, the MT part in the m-IAB node can also perform reception and confirmation.

[0056] In addition, the m-IAB node may be configured to broadcast (message 7-4) an indication that the cell provided by the m-IAB node is a mobile cell. In the example shown, the m-IAB node receives (message 7-5) a corresponding broadcast from one or more other mobile IAB nodes, which indicates one or more mobile cells. The m-IAB node is configured to determine in box 7-6 that the indicated cell in the received broadcast is a first cell, that is, a cell to be excluded from the (multiple) neighboring cells to be reported (i.e., a cell not reported in the neighboring cell measurement). Therefore, in the example shown, using the indication received in message 7-5 and the first configuration information received in message 7-2, the m-IAB node can determine the second configuration information for the neighboring cell measurement report, which does not include any second cell to be reported. In other words, the mobile IAB node can combine the information received in messages 7-2 and 7-5, and determine the second configuration information (configuration information for reporting the measurement of one or more neighboring cells, excluding the first cell). The mobile IAB node performs neighboring cell measurements as configured. In the example shown, the event triggering measurement report (block 7-7) is satisfied, and the measurement report (excluding the measurement results on the first cell or at least the mobile cell) is sent (message 7-8) to the host CU. Message 7-8 may be a "MeasurementReport" according to RRC. Then, based on the measurement results in message 7-8, the host CU may make a handover (HO) decision in block 7-9, the decision being based on available cells, e.g., available cells excluding mobile cells.

[0057] It should be understood that the mobile IAB node can receive an indication of the first cell from the m-CU (message 6-4) and in the broadcast (message 7-4), and the mobile IAB node can be configured to use these two pieces of information to determine the first cell that is not to be reported (i.e., the first cell excluded from the neighboring cells to be reported).

[0058] Figure 8 An example functionality is illustrated where the m-CU can reject a handover request to a mobile cell.

[0059] refer to Figure 8 , the central unit part of the serving host node (host CU) configures one or more IAB nodes controlled by the host CU in box 8-1 to make them report measurements on neighboring cells. In other words, the host CU determines configuration information for at least one of the served IAB nodes, which is used to report measurements of one or more neighboring cells (a group of neighboring cells). In the example shown, the IAB node is a mobile IAB node (M-IAB node). The host CU then sends (message 8-2) the configuration information to the mobile IAB node, and the mobile IAB node confirms (message 8-3) the configuration information. Message 8-2 can be "RRCReconfiguration" according to RRC (Radio Resource Control), which includes the measurement report configuration, and message 8-3 can be "RRCReconfigurationComplete" according to RRC. Although Figure 8 Not shown in the figure, the MT part in the m-IAB node can also perform reception and confirmation.

[0060] The mobile IAB node (m-IAB node) is also configured to send (message 8-4) to the m-CU a first identifier and a second identifier, the first identifier identifying a primary serving cell of the mobile IAB node (i.e., a device operating (acting as) as a mobile IAB point), the second identifier being used by the mobile IAB node (i.e., the device) in conjunction with the primary serving cell. The first identifier may be an identifier of a primary cell of the MT part, and the second identifier may be an identifier of the MT part used by the MT part in the primary cell. For example, the first identifier may be a New Radio Global Cell Identifier (NGCI), and the second identifier may be a Cell Radio Network Temporary Identifier (C-RNTI). Although Figure 8 8-4 to the m-CU. Message 8-4 may be a "GNB-DU Configuration Update" according to F1AP, including the identifier (the identifier of the primary cell where the MT is collocated and the identifier of the MT therein). Figure 8Although not shown in the figure, the m-CU may also confirm the message 8-4 by sending, for example, "GNB-DU CON-FIGURATION UPDATE ACKNOWLEDG" according to F1AP.

[0061] The mobile IAB node performs neighboring cell measurements according to the configuration. In the example shown, the event-triggered measurement report (box 8-5) is satisfied, and the measurement report (which may contain measurement results on the mobile cell) is sent to the host CU (message 8-6). Message 8-6 may be a "MeasurementReport" according to RRC. In the example shown, using the result in message 8-6, the host CU makes a handover (HO) decision to the target cell in box 8-7 and sends a handover request to the m-CU (message 8-8). Message 8-8 may be a "handover request" according to XnAP and indicates "mobile MT to cell". The handover request contains context information of the mobile IAB node in the current serving cell, such as the radio resource control context of the MT part of the IAB node. The context information may include, for example, information identifying the current primary serving cell, and an identifier of the IAB node / MT part used in the current primary serving cell.

[0062] In block 8-9, the m-CU checks whether the first identifier and the second identifier received in message 8-4 match the information received in message 8-8 in the context information. If they match, as assumed in the example shown, the m-CU rejects the handover to the target cell and sends corresponding information to the host CU (message 8-10). Message 8-10 may be a "handover preparation failure" according to XnAP, which includes an indication of "target not allowed". In other words, the handover to the mobile cell is rejected.

[0063] Fig. 9 Example functionality based on preventing a handover request to a mobile cell is illustrated.

[0064] refer to Fig. 9 , the m-CU is configured to send (message 9-1) identification information of the m-CU to a mobility management node (management device) in the core network (e.g., a device including an access and mobility management function AMF). For example, the identification information may be identification information of a generalized Node B (gNB) in a radio access network, the gNB including or hosting the m-CU. Message 9-1 may be an "NG establishment request" including an indication of "preventing mobile IAB nodes from using their own RAN node IDs". The device including the AMF confirms (message 9-2) the information and may add the information as a new definition to the mobility restriction list (access restriction list) in box 9-3. In other words, the m-CU may be indicated as being outside the boundaries of the m-IAB node. Message 9-2 may be an "NG establishment response".

[0065] In the example shown, the m-IAB node performs RRC establishment with the host CU through messages 9-4, 9-5 and 9-6. Message 9-4 can be an "RRCSetupRequest" according to RRC. Message 9-5 can be an "RRCSetup" according to RRC, and message 9-6 can be an "RRCSetupComplete" message according to RRC. In the example shown, message 9-6 is also accompanied by an indication that the IAB node is a mobile IAB node. As an indication, message 9-6 may include a non-access stratum (NAS) message indicating a mobile IAB node. (The IAB node provides one or more mobile cells.) The accompanying indication is transparent to the host CU.

[0066] The host CU forwards the accompanying indication (message 9-7) to the device including the AMF. Message 9-7 may be an "initial UE message" according to NGAP, which includes the indication of the mobile IAB node as new information. (NGAP is an application layer protocol.)

[0067] The device including the AMF responds to the host CU by sending (message 9-8) information that at least identifies the identity of the m-CU in the mobility restriction list (and may also identify the identities of other m-CUs). In other words, in message 9-8, at least information that identifies the control device that controls one or more cells provided by one or more mobile IAB nodes (including m-IAB nodes) is sent. Message 9-8 may be an "Initial Context Establishment Request" according to NGAP, and it may include the "ID of the m-CU in the mobility restriction list" as new information. The host CU may respond by sending message 9-9 (for example, an "Initial Context Establishment Response" according to NGAP).

[0068] In the example shown, the host CU is configured to maintain its own restriction list and in block 9-10 adds the information received in message 9-8 to the list. Fig. 9 Not shown in the figure, information corresponding to the information received in message 9-8 may also be received from the source host CU during the handover.

[0069] In box 9-11, the host CU further configures the m-IAB node to report measurements of neighboring cells. In other words, the host CU determines configuration information for the m-IAB node, which is used to report measurements of one or more neighboring cells (a group of neighboring cells). The host CU then sends (message 9-12) the configuration information to the mobile IAB node (m-IAB node), and the mobile IAB node confirms (message 9-13) the configuration information. Message 9-12 can be "RRCReconfiguration" according to RRC (Radio Resource Control), which includes the measurement report configuration, and message 9-13 can be "RRCReconfigurationComplete" according to RRC. Although Fig. 9 Although not shown in the figure, the MT part in the m-IAB node can also perform reception and confirmation.

[0070] The mobile IAB node performs neighbor cell measurements as configured. In the example shown, the event-triggered measurement report (box 9-14) is satisfied, and the measurement report (which may contain measurement results on the mobile cell) is sent (message 9-15) to the host CU. Message 9-16 may be a "MeasurementReport" according to RRC. In the example shown, using the results in message 9-12 and the information on its list, the host CU makes a handover (HO) decision in box 9-16, ignoring the m-CU cell as the target cell. In other words, the host CU uses information identifying the m-CU (control device) to determine a first group of neighboring cells and a second group of neighboring cells, the first group including neighboring cells controlled by the m-CU, and the second group including neighboring cells not controlled by the m-CU (assuming that the list includes information about one m-CU); and based on the measurement results of the second group of neighboring cells, determine whether to start handing over the m-IAB node to the cells in the second group.

[0071] As can be seen from the above example, using the radio access network node identifier as a new area definition in the access restriction prevents handover requests to cells served by the mobile IAB node.

[0072] Fig.10 A flow chart illustrating functions performed by one or more apparatuses configured to implement at least the common features of the above disclosed examples.

[0073] refer to Fig.10 When an indication indicating at least one or more mobile cells is received in block 1001, in block 1002, based on or using the indication, one or more mobile cells are excluded as possible handover target cells. For example, the mobile cells may not be reported in the measurement, i.e., excluded, such as Figures 4 to 7As shown, or the mobile cell can be rejected at a later stage, e.g. Figure 8 and Fig. 9 shown.

[0074] The above is based on Figures 2 to 10 There is no absolute time order for the boxes, related functions and information exchanges (messages) described here, and some of them can be executed simultaneously or in an order different from the given order. For example, in the implementation of sending message 5-2, box 5-4 can be executed before sending message 5-2 or at the same time. Other functions can also be executed between or inside them, and other information can be sent and / or other rules can be applied. For example, switching from user equipment to mobile cell and from mobile cell to user equipment can be performed. Some boxes, or a part of a box, or one or more pieces of information can also be omitted, or replaced by a corresponding box or a part of a box or one or more pieces of information. For example, a report from a mobile IAB node may not be triggered.

[0075] Fig.11 An apparatus 1101 is illustrated according to some embodiments.

[0076] The device 1101 may include one or more communication control circuit systems 1120 (such as at least one processor) and at least one memory 1130, the memory including one or more algorithms 1131, such as computer program code (software), wherein the at least one memory and the computer program code (software) are configured to, together with the at least one processor, enable the device to perform any of the example functions of the above-mentioned device. The at least one memory 1130 may also include at least one database 1132.

[0077] refer to Fig.11 According to an embodiment, one or more communication control circuit systems 1120 of the device 1101 include at least a mobile cell ignoring circuit system 1121 (m-cell ignorer), which is configured to perform at least one of the following items: exclude (multiple) mobile cells or reject / block the handover to the mobile cell, that is, the function of the mobile IAB node or the host node or the m-CU or the AMF. To this end, the mobile cell ignoring circuit system 1121 of the device 1101 is configured to: use one or more individual circuit systems to perform the above, for example, by means of Figures 2 to 10 Rather, at least some of the functions of the corresponding device described.

[0078] refer to Fig.11 , the memory 1130 may be implemented using any suitable data storage technology, such as semiconductor-based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory.

[0079] refer to Fig.11 , the device 1101 may also include different interfaces 1110, such as one or more communication interfaces (TX / RX), which include hardware and / or software for implementing communication connections according to one or more communication protocols. One or more communication interfaces 1110 may enable connection to the core network of the Internet and / or wireless communication network. One or more communication interfaces 1110 may provide communication capabilities for the device to communicate in a cellular communication system and to implement communication with different network nodes or elements. One or more communication interfaces 1110 may include standard well-known components controlled by a corresponding control unit, such as amplifiers, filters, frequency converters, modulators (demodulators) and encoder / decoder circuit systems, and one or more antennas.

[0080] As used in this application, the term "circuitry" may refer to one or more or all of the following: (a) a pure hardware circuit implementation, such as an implementation in analog and / or digital circuitry only; and (b) a combination of hardware circuitry and software (and / or firmware), such as (as applicable): (i) a combination of analog and / or digital hardware circuitry and software / firmware, and (ii) any portion of hardware processor(s) with software, including digital signal processor(s), software, and memory(s), which work together to enable an apparatus (such as a terminal device or access node) to perform various functions; and (c) hardware circuit(s) and processor(s), such as microprocessor(s), or a portion of microprocessor(s), which requires software (e.g., firmware) to operate, but may not be present when not required to operate. This definition of "circuitry" applies to all uses of the term in this application (including in any claims). As another example, as used in this application, the term "circuitry" also covers an implementation of only a hardware circuit or processor (or multiple processors), or a portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. For example, if applicable to a particular claim element, the term "circuitry" also includes a baseband integrated circuit for an access node or terminal device or other computing or network device.

[0081] In one embodiment, Fig.12 As shown in Fig.11 At least some of the functions of the apparatus may be shared between two physically separate devices to form an operational entity. Thus, the apparatus may be viewed as depicting an operational entity comprising one or more physically separate devices for performing at least some of the processes described. Fig.12The apparatus may include a remote control unit RCU 1220, such as a host or server computer, which is operably coupled (e.g., via a wireless or wired network) to a remote distributed unit RDU 1222 located in a base station. In one embodiment, at least some of the described processes may be performed by the RCU 1220. In one embodiment, the execution of at least some of the described processes may be shared between the RDU 1222 and the RCU 1220.

[0082] and Fig.11 similar, Fig.12 The device may include one or more communication control circuit systems (CNTL) 1120 (such as at least one processor), and at least one memory (MEM) 1130, including one or more algorithms (PROG) 1131, such as computer program code (software), wherein the at least one memory and the computer program code are configured to, together with the at least one processor, enable the device to perform any one of the example functions of the above-mentioned device.

[0083] In one embodiment, the RCU 1220 can generate a virtual network through which the RCU 1220 communicates with the RDU 1222. In general, a virtual network can involve the process of combining hardware and software network resources and network functions into a software-based management entity (virtual network). Network virtualization can involve platform virtualization, which is often combined with resource virtualization. Network virtualization can be classified as an external virtual network, which combines many networks or network parts into a server computer or host (e.g., RCU). External network virtualization is intended to optimize network sharing. Another type is an internal virtual network, which provides network-like functions for software containers on a single system. Virtual networks can also be used to test terminal devices.

[0084] In one embodiment, the virtual network can provide a flexible allocation of operations between the RDU and the RCU. In practice, any digital signal processing task can be performed in the RDU or the RCU, and the boundary of the responsibility transfer between the RDU and the RCU can be selected according to the implementation.

[0085] In one embodiment, in combination Figures 2 to 10At least some of the processes described may be performed by an apparatus including corresponding components for performing at least some of the above processes. Some example components for performing the above processes may include at least one of the following: a detector, a processor (including dual-core and multi-core processors), a digital signal processor, a controller, a receiver, a transmitter, an encoder, a decoder, a memory, RAM, ROM, software, firmware, a display, a user interface, a display circuit system, a user interface circuit system, a user interface software, display software, a circuit, an antenna, an antenna circuit system, and a circuit system. In one embodiment, at least one processor, a memory, and a computer program code form a processing component, or include components for performing the above processes according to the present invention. Figures 2 to 10 One or more computer program code portions of any one of the embodiments or one or more operations of its operations.

[0086] According to one embodiment, a device is provided, the device comprising means for performing at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function or a seventh function: wherein the first function comprises at least: receiving an indication indicating one or more mobile cells in a radio access network; determining configuration information for reporting measurements of one or more neighboring cells in the radio access network, wherein the one or more mobile cells are excluded from the one or more neighboring cells to be reported based on the indication; and sending the configuration information to at least one integrated access and backhaul node in the radio access network. wherein the second function comprises at least: controlling the one or more mobile cells in the radio access network; and sending an indication indicating the one or more mobile cells to one or more first integrated access and backhaul host nodes in the radio access network. wherein the third function comprises at least: receiving first configuration information, the first configuration information for reporting measurements of one or more neighboring cells; receiving an indication indicating one or more first cells to be excluded from the one or more neighboring cells to be reported; determining second configuration information for reporting based on the indication and the first configuration information, the second configuration information excluding the indicated one or more first cells; and using the second configuration information at least for reporting measurements of the one or more neighboring cells. The fourth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; and sending at least an indication to the mobile integrated access and backhaul node, the indication indicating one or more cells to be excluded from a report reporting measurements of one or more neighboring cells. The fifth function at least includes: sending identification information to a control device, the control device controlling at least a cell provided by the device, the identification information including a first identifier and a second identifier, the first identifier identifying a primary service cell of the device, and the second identifier being used by the device together with the primary service cell. The sixth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; receiving a first identifier and a second identifier from the mobile integrated access and backhaul node, the first identifier identifying a primary service cell of the mobile integrated access and backhaul node, and the second identifier being used by the mobile integrated access and backhaul node together with the primary service cell; receiving a handover request from a host node of the mobile integrated access and backhaul node, the handover request requesting a handover of the mobile integrated access and backhaul node to a target cell, the handover request including context information; checking whether the first identifier and the second identifier match the context information in the handover request; and in response to the first identifier and the second identifier matching the context information in the handover request, rejecting the handover.The seventh function includes at least: receiving information that at least identifies a control device, which controls one or more cells provided by one or more mobile integrated access and backhaul nodes; receiving a measurement report from a mobile integrated access and backhaul node in the one or more mobile integrated access and backhaul nodes, which measurement report reports measurement of one or more adjacent cells; using the information that identifies the control device, determining a first group of adjacent cells and a second group of adjacent cells, the first group includes adjacent cells controlled by the control device, and the second group includes adjacent cells not controlled by the control device; and determining whether to start switching of a mobile integrated access and backhaul node in the mobile integrated access and backhaul node to a cell in the second group based on the measurement results in the measurement report.

[0087] According to one embodiment, an apparatus is provided, the apparatus comprising means for: receiving an indication indicating at least one or more mobile cells; and excluding the one or more mobile cells in at least one or more measurement reports reporting measurements of one or more neighboring cells based on the indication.

[0088] The described embodiments may also be implemented in the form of a computer process defined by a computer program or part thereof. Figures 2 to 10 Embodiments of the described methods can be performed by executing at least a portion of a computer program including corresponding instructions. The computer program can be provided as a computer-readable medium including program instructions stored thereon, or as a non-transient computer-readable medium including program instructions stored thereon. The computer program can be in source code form, object code form, or some intermediate form, and can be stored in a carrier, which can be any entity or device capable of carrying the program. For example, the computer program can be stored on a computer program distribution medium readable by a computer or processor. The computer program medium can be, for example, but not limited to, a recording medium, a computer memory, a read-only memory, an electrical carrier signal, a telecommunication signal, and a software distribution package. The computer program medium can be a non-transient medium. The coding of the software for executing the illustrated and described embodiments is completely within the scope of ordinary technicians in the art.

[0089] Although the embodiments have been described above with reference to the examples according to the accompanying drawings, it is clear that the embodiments are not limited thereto, but can be modified in various ways within the scope of the appended claims. Therefore, all words and expressions should be interpreted broadly and they are intended to illustrate rather than limit the embodiments. It is obvious to those skilled in the art that with the advancement of technology, the concepts of the present invention can be implemented in various ways. In addition, it is clear to those skilled in the art that the described embodiments can, but not necessarily, be combined with other embodiments in various ways.

Claims

1. A device for a wireless access network, the device comprising: at least one processor; as well as at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least perform: receiving an indication indicating one or more mobile cells in the radio access network; determining configuration information for reporting measurements of one or more neighboring cells in the radio access network, wherein the one or more mobile cells are excluded from the one or more neighboring cells to be reported based on the indication; as well as The configuration information is sent to at least one integrated access and backhaul node in the radio access network.

2. The apparatus according to claim 1, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least perform: The device operates as a first integrated access and backhaul host node, which controls the at least one integrated access and backhaul node in the wireless access network.

3. The apparatus of claim 2, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least perform: receiving the indication from a second integrated access and backhaul host node; and The configuration information is determined at least upon receiving the indication from the second integrated access and backhaul host node.

4. The apparatus according to any one of claims 1 to 3, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least perform: receiving the indication from a mobile integrated access and backhaul node in the radio access network; and The indication is forwarded to an integrated access and backhaul neighboring host node in the radio access network.

5. A device for a wireless access network, the device comprising: at least one processor; as well as at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least perform: controlling one or more mobile cells in the radio access network; and An indication indicating the one or more mobile cells is sent to one or more first integrated access and backhaul host nodes in the radio access network.

6. The apparatus of claim 5, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least perform: The device operates as a second integrated access and backhaul host node, which controls at least one integrated access and backhaul node in the wireless access network.

7. A device for a wireless access network, the device comprising: at least one processor; as well as at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least perform: receiving first configuration information, where the first configuration information is used to report measurements of one or more neighboring cells; receiving an indication indicating one or more first cells to be excluded from the one or more neighboring cells to be reported; Determine, based on the indication and the first configuration information, second configuration information for reporting, wherein the second configuration information excludes the indicated one or more first cells; as well as The second configuration information is used at least for reporting the measurements of the one or more neighboring cells.

8. The apparatus of claim 7, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least perform: operating as a mobile integrated access and backhaul node in said radio access network; and The first configuration information is received from a host node.

9. The apparatus according to claim 7 or 8, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least execute: receiving the indication from a control device, the control device controlling at least a cell provided by the apparatus.

10. The apparatus of claim 9, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to further at least perform: receiving the indication in an application protocol signaling message.

11. The apparatus according to any one of claims 7 to 10, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least perform: The indication is received in a broadcast from one or more mobile integrated access and backhaul nodes in the radio access network.

12. The apparatus according to any one of claims 7 to 11, wherein the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further at least perform: A further indication is broadcasted indicating that one or more cells provided by the apparatus are mobile cells.

13. A device for a wireless access network, the device comprising: at least one processor; as well as at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least perform: controlling a cell provided by at least a mobile integrated access and backhaul node; and An indication is sent to at least the mobile integrated access and backhaul node, the indication indicating one or more cells to be excluded from a report reporting measurements of one or more neighboring cells.

14. The apparatus of claim 13, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to further at least perform: causing the indication to be sent in an application protocol signaling message.

15. A device for a wireless access network, the device comprising: at least one processor; as well as at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least perform: Identification information is sent to a control device that controls at least a cell provided by the device, the identification information comprising a first identifier and a second identifier, the first identifier identifying a primary serving cell of the device, the second identifier being used by the device together with the primary serving cell.

16. The apparatus of claim 15, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to further at least perform: The mobile integrated access and backhaul node operates as a mobile integrated access and backhaul node in the radio access network, and the mobile integrated access and backhaul node provides a mobile cell controlled by the control device.

17. A device for a wireless access network, the device comprising: at least one processor; as well as at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least perform: controlling a cell provided by at least a mobile integrated access and backhaul node; receiving a first identifier and a second identifier from the mobile integrated access and backhaul node, the first identifier identifying a primary serving cell of the mobile integrated access and backhaul node, the second identifier being used by the mobile integrated access and backhaul node with the primary serving cell; receiving a handover request from a donor node of the mobile integrated access and backhaul node, the handover request requesting handover of the mobile integrated access and backhaul node to a target cell, the handover request including context information; checking whether the first identifier and the second identifier match the context information in the handover request; as well as In response to the first identifier and the second identifier matching the context information in the handover request, rejecting the handover.

18. A device for a wireless access network, the device comprising: at least one processor; as well as at least one memory, the at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least perform: receiving information at least identifying a control device that controls one or more cells provided by one or more mobile integrated access and backhaul nodes; receiving a measurement report from one of the one or more mobile integrated access and backhaul nodes, the measurement report reporting measurements of one or more neighboring cells; using the information identifying the control device, determining a first group of neighboring cells and a second group of neighboring cells, the first group comprising neighboring cells controlled by the control device and the second group comprising neighboring cells not controlled by the control device; as well as Based on the measurement result in the measurement report, it is determined whether to start handover of the one of the mobile integrated access and backhaul nodes to a cell in the second group.

19. The apparatus of claim 18, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to further at least perform: In the radio access network, operating as a host node of the one of the one or more mobile integrated access and backhaul nodes; and Said information identifying at least said control means is received from a management device providing at least mobility management, or from a source donor node during handover.

20. A method for a wireless access network, the method comprising performing, by a device, at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, or a seventh function, The first function at least includes: receiving an indication indicating one or more mobile cells in the radio access network; determining configuration information for reporting measurements of one or more neighboring cells in the radio access network, wherein the one or more mobile cells are excluded from the one or more neighboring cells to be reported based on the indication; as well as sending the configuration information to at least one integrated access and backhaul node in the wireless access network, The second function at least includes: controlling one or more mobile cells in the radio access network; and sending an indication indicating the one or more mobile cells to one or more first integrated access and backhaul host nodes in the radio access network, The third function at least includes: receiving first configuration information, where the first configuration information is used to report measurements of one or more neighboring cells; receiving an indication indicating one or more first cells to be excluded from the one or more neighboring cells to be reported; Determine, based on the indication and the first configuration information, second configuration information for reporting, the second configuration information excluding the indicated one or more first cells; and using the second configuration information at least for reporting the measurement of the one or more neighboring cells, The fourth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; and sending at least an indication to the mobile integrated access and backhaul node, the indication indicating one or more cells to be excluded from a report reporting measurements of one or more neighboring cells, The fifth function at least includes: The device sends identification information to a control device, the control device controls at least a cell provided by the device, the identification information includes a first identifier and a second identifier, the first identifier identifies a primary serving cell of the device, and the second identifier is used by the device together with the primary serving cell, The sixth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; receiving a first identifier and a second identifier from the mobile integrated access and backhaul node, the first identifier identifying a primary serving cell of the mobile integrated access and backhaul node, the second identifier being used by the mobile integrated access and backhaul node with the primary serving cell; receiving a handover request from a donor node of the mobile integrated access and backhaul node, the handover request requesting handover of the mobile integrated access and backhaul node to a target cell, the handover request including context information; checking whether the first identifier and the second identifier match the context information in the handover request; and In response to the first identifier and the second identifier matching the context information in the handover request, rejecting the handover, The seventh function at least includes: receiving information at least identifying a control device that controls one or more cells provided by one or more mobile integrated access and backhaul nodes; receiving a measurement report from one of the one or more mobile integrated access and backhaul nodes, the measurement report reporting measurements of one or more neighboring cells; using the information identifying the control device, determining a first group of neighboring cells and a second group of neighboring cells, the first group comprising neighboring cells controlled by the control device and the second group comprising neighboring cells not controlled by the control device; and Based on the measurement result in the measurement report, it is determined whether to start handover of the one of the mobile integrated access and backhaul nodes to a cell in the second group.

21. A computer-readable medium comprising program instructions stored thereon for at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, or a seventh function, the program instructions being used to perform the corresponding function: The first function at least includes: receiving an indication indicating one or more mobile cells in the radio access network; determining configuration information for reporting measurements of one or more neighboring cells in the radio access network, wherein the one or more mobile cells are excluded from the one or more neighboring cells to be reported based on the indication; as well as sending the configuration information to at least one integrated access and backhaul node in the wireless access network, The second function at least includes: controlling one or more mobile cells in the radio access network; and sending an indication indicating the one or more mobile cells to one or more first integrated access and backhaul host nodes in the radio access network, The third function at least includes: receiving first configuration information, where the first configuration information is used to report measurements of one or more neighboring cells; receiving an indication indicating one or more first cells to be excluded from the one or more neighboring cells to be reported; Determine, based on the indication and the first configuration information, second configuration information for reporting, the second configuration information excluding the indicated one or more first cells; and using the second configuration information at least for reporting the measurement of the one or more neighboring cells, The fourth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; and sending at least an indication to the mobile integrated access and backhaul node, the indication indicating one or more cells to be excluded from a report reporting measurements of one or more neighboring cells, The fifth function at least includes: The slave device sends identification information to a control device that controls at least a cell provided by the device, the identification information comprising a first identifier and a second identifier, the first identifier identifying a primary serving cell of the device, the second identifier being used by the device together with the primary serving cell, The sixth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; receiving a first identifier and a second identifier from the mobile integrated access and backhaul node, the first identifier identifying a primary serving cell of the mobile integrated access and backhaul node, the second identifier being used by the mobile integrated access and backhaul node with the primary serving cell; receiving a handover request from a donor node of the mobile integrated access and backhaul node, the handover request requesting handover of the mobile integrated access and backhaul node to a target cell, the handover request including context information; checking whether the first identifier and the second identifier match the context information in the handover request; and In response to the first identifier and the second identifier matching the context information in the handover request, rejecting the handover, The seventh function at least includes: receiving information at least identifying a control device that controls one or more cells provided by one or more mobile integrated access and backhaul nodes; receiving a measurement report from one of the one or more mobile integrated access and backhaul nodes, the measurement report reporting measurements of one or more neighboring cells; using the information identifying the control device, determining a first group of neighboring cells and a second group of neighboring cells, the first group comprising neighboring cells controlled by the control device and the second group comprising neighboring cells not controlled by the control device; and Based on the measurement result in the measurement report, it is determined whether to start handover of the one of the mobile integrated access and backhaul nodes to a cell in the second group.

22. The computer readable medium of claim 21, wherein the medium is a non-transitory computer readable medium.

23. A computer program comprising instructions for causing a device to perform at least one of a first function, a second function, a third function, a fourth function, a fifth function, a sixth function, or a seventh function: The first function at least includes: receiving an indication indicating one or more mobile cells in the radio access network; determining configuration information for reporting measurements of one or more neighboring cells in the radio access network, wherein the one or more mobile cells are excluded from the one or more neighboring cells to be reported based on the indication; as well as sending the configuration information to at least one integrated access and backhaul node in the wireless access network, The second function at least includes: controlling one or more mobile cells in the radio access network; and sending an indication indicating the one or more mobile cells to one or more first integrated access and backhaul host nodes in the radio access network, The third function at least includes: receiving first configuration information, where the first configuration information is used to report measurements of one or more neighboring cells; receiving an indication indicating one or more first cells to be excluded from the one or more neighboring cells to be reported; Determine, based on the indication and the first configuration information, second configuration information for reporting, the second configuration information excluding the indicated one or more first cells; and using the second configuration information at least for reporting the measurement of the one or more neighboring cells, The fourth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; and sending at least an indication to the mobile integrated access and backhaul node, the indication indicating one or more cells to be excluded from a report reporting measurements of one or more neighboring cells, The fifth function at least includes: sending identification information to a control device that controls at least a cell provided by the device, the identification information comprising a first identifier and a second identifier, the first identifier identifying a primary serving cell of the device, the second identifier being used by the device together with the primary serving cell, The sixth function at least includes: controlling a cell provided by at least a mobile integrated access and backhaul node; receiving a first identifier and a second identifier from the mobile integrated access and backhaul node, the first identifier identifying a primary serving cell of the mobile integrated access and backhaul node, the second identifier being used by the mobile integrated access and backhaul node with the primary serving cell; receiving a handover request from a donor node of the mobile integrated access and backhaul node, the handover request requesting handover of the mobile integrated access and backhaul node to a target cell, the handover request including context information; checking whether the first identifier and the second identifier match the context information in the handover request; and In response to the first identifier and the second identifier matching the context information in the handover request, rejecting the handover, The seventh function at least includes: receiving information at least identifying a control device that controls one or more cells provided by one or more mobile integrated access and backhaul nodes; receiving a measurement report from one of the one or more mobile integrated access and backhaul nodes, the measurement report reporting measurements of one or more neighboring cells; using the information identifying the control device, determining a first group of neighboring cells and a second group of neighboring cells, the first group comprising neighboring cells controlled by the control device and the second group comprising neighboring cells not controlled by the control device; and Based on the measurement result in the measurement report, it is determined whether to start handover of the one of the mobile integrated access and backhaul nodes to a cell in the second group.

24. An apparatus for a wireless access network, the apparatus comprising means for performing at least the following: receiving an indication, the indication indicating at least one or more mobile cells; and Based on the indication, the one or more mobile cells are excluded from at least one or more measurement reports reporting measurements of one or more neighboring cells.

25. The apparatus of claim 24, wherein the component is further configured to perform: operating as an integrated access and backhaul host node in the radio access network to provide access to a core network to one or more integrated access and backhaul nodes; determining, at least upon receiving the indication, configuration information for at least one served integrated access and backhaul node of the one or more integrated access and backhaul nodes, the configuration information being used to report measurements of one or more neighboring cells, wherein the one or more mobile cells are excluded from being reported; as well as The configuration information is sent to the at least one served integrated access and backhaul node.

26. The apparatus of claim 24, wherein the component is further configured to perform: operating as a mobile integrated access and backhaul node in said radio access network; receiving configuration information for reporting measurements of one or more neighboring cells; receiving the indication, the indication at least indicating the one or more mobile cells; as well as The configuration information is updated based on the indication so that the one or more mobile cells are excluded from the one or more neighboring cells to be reported.

27. The apparatus of claim 24, wherein the component is further configured to perform: The device operates as a mobile integrated access and backhaul node in the radio access network and receives the indication from a control device through the radio access network, the control device controlling a cell provided by at least one integrated access and backhaul node among the one or more mobile integrated access and backhaul nodes.

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