Method, device and equipment for establishing mobile access and backhaul integrated network

Abstract

This application discloses a method, apparatus, and device for establishing an integrated mobile access and backhaul network, belonging to the field of mobile communications. The method for establishing an integrated mobile access and backhaul network according to embodiments of this application includes: when accessing a wireless network through a first base station, requesting to be configured as an integrated mobile access and backhaul host; wherein the first base station is an integrated fixed access and backhaul host. Through embodiments of this application, frequent handovers by mobile users during mobility can be avoided, reducing the amount of signaling during network handovers and lowering interface and air interface loads.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mobile communication, and particularly relates to a method, device and equipment for establishing an integrated access and backhaul network. BACKGROUND

[0002] The existing integrated access and backhaul (IAB) network structure makes all nodes of an IAB network controlled by an integrated access and backhaul donor centralized unit (IAB-donor-CU), which facilitates topology management, load control and quality of service (QoS) management.

[0003] In the IAB network, the premise assumption of network design is that all IAB nodes are fixed, and the movement of users is random. The inter-CU handover does not require an IAB network to quickly switch from the original centralized unit (CU) network to the target network, although it is still necessary to switch the context of all nodes of the handover IAB network from the source network to the target network, which brings great challenges to network design in terms of Xn signaling load. When the mobile IAB network switches from the original CU network to the target CU network each time, all downstream nodes of the mobile IAB network need to be quickly switched from the original CU network to the target CU network in a short period of time, and the network needs to generate a handover command for all handover nodes during the inter-CU handover process, and then transmit the handover command to the original CU network, and then transmit the handover command to the to-be-switched nodes, which generates huge Xn load and air interface load. At the same time, the original CU network also needs to quickly transmit the to-be-transmitted data to the target CU, which aggravates the load of the Xn interface.

[0004] Since the handover trigger of users is random, the IAB network cannot meet the demand of rapid handover of a large number of users. SUMMARY

[0005] The embodiments of the present application provide a method, device and equipment for establishing an integrated access and backhaul network, which can solve the problem that the IAB network cannot meet the demand of rapid handover of a large number of users.

[0006] In a first aspect, a method for establishing an integrated access and backhaul network is provided, which is executed by a first communication device, and the method comprises:

[0007] In the case of accessing the wireless network through the first base station, the first configuration module is configured to request to be configured as a mobile access and backhaul host; wherein the first base station is a fixed access and backhaul host.

[0008] In a second aspect, a mobile access and backhaul integrated network establishment device is provided, comprising:

[0009] The first transceiver module is configured to access a wireless network through a first base station.

[0010] The first configuration module is configured to request to be configured as a mobile access and backhaul host in the case of accessing the wireless network through the first base station; wherein the first base station is a fixed access and backhaul host.

[0011] In a third aspect, a mobile access and backhaul integrated network establishment method is provided, executed by a second communication device, comprising:

[0012] The second transceiver module is configured to receive identification information of a mobile access and backhaul host through broadcasting; wherein the mobile access and backhaul host establishes a backhaul link with a fixed access and backhaul host.

[0013] The second configuration module is configured to establish a backhaul link with the mobile access and backhaul host.

[0014] In a fourth aspect, a mobile access and backhaul integrated network establishment device is provided, comprising:

[0015] The second transceiver module is configured to receive identification information of a mobile access and backhaul host through broadcasting; wherein the mobile access and backhaul host establishes a backhaul link with a fixed access and backhaul host.

[0016] The second configuration module is configured to establish a backhaul link with the mobile access and backhaul host.

[0017] In a fifth aspect, a mobile access and backhaul integrated network establishment method is provided, executed by a network side device, comprising:

[0018] The network side device receives a first request of a first communication device, wherein the first request is used to request to configure the first communication device as a mobile access and backhaul host; wherein the network side device is a fixed access and backhaul host.

[0019] In a sixth aspect, a mobile access and backhaul integrated network establishment device is provided, comprising:

[0020] The third transceiver module is used to receive a first request from the first communication device, the first request being used to request that the first communication device be configured as a mobile access and backhaul integrated host; wherein, the device for establishing the mobile access and backhaul integrated network is a fixed access and backhaul integrated host.

[0021] The third configuration module is used to process the first request.

[0022] In a seventh aspect, a communication device is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the third aspect.

[0023] Eighthly, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in the fifth aspect.

[0024] A ninth aspect provides a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fifth aspect.

[0025] In a tenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or the method as described in the third aspect, or the method as described in the fifth aspect.

[0026] Eleventhly, a computer program / program product is provided, the computer program / program product being stored in a non-volatile storage medium, the program / program product being executed by at least one processor to implement the method as described in the first aspect, or the method as described in the third aspect, or the method as described in the fifth aspect.

[0027] In this embodiment of the application, the fixed IAB donor is requested to be configured as a mobile IAB donor by the first communication device to establish an IAB network. This can avoid frequent handovers by mobile users during their movement, reduce the amount of signaling during network handover, and reduce interface load and air interface load. Attached Figure Description

[0028] Figure 1 This diagram illustrates a network structure of an integrated access and backhaul system applicable to embodiments of this application.

[0029] Figure 2 This diagram illustrates the CU-DU structure of an IAB system available in embodiments of this application.

[0030] Figure 3 This is a schematic flowchart illustrating a method for establishing an integrated mobile access and backhaul network according to an embodiment of this application;

[0031] Figure 4 This diagram illustrates another flowchart of the method for establishing an integrated mobile access and backhaul network according to an embodiment of this application.

[0032] Figure 5 This diagram illustrates another flowchart of the method for establishing an integrated mobile access and backhaul network according to an embodiment of this application.

[0033] Figure 6 This is a schematic diagram of a structure of an apparatus for establishing an integrated mobile access and backhaul network according to an embodiment of this application;

[0034] Figure 7 This diagram illustrates another flowchart of the method for establishing an integrated mobile access and backhaul network according to an embodiment of this application.

[0035] Figure 8 This diagram illustrates another structural schematic of the apparatus for establishing an integrated mobile access and backhaul network according to an embodiment of this application.

[0036] Figure 9 This diagram illustrates another flowchart of the method for establishing an integrated mobile access and backhaul network according to an embodiment of this application.

[0037] Figure 10 This diagram illustrates another structural schematic of the apparatus for establishing an integrated mobile access and backhaul network according to an embodiment of this application.

[0038] Figure 11 This illustration shows a schematic diagram of a communication device structure provided in an embodiment of this application;

[0039] Figure 12 A schematic diagram of the structure of a network-side device to implement an embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0041] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0043] Figure 1 This diagram illustrates a network structure of an integrated access and backhaul system applicable to embodiments of this application. Figure 2This diagram illustrates the CU-DU structure of an IAB system available in embodiments of this application. An IAB node includes a Distributed Unit (DU) functional module and a Mobile Termination (MT) functional module. Using the MT, an access point (IAB node) can find an upstream access point (parent IAB node) and establish a radio connection with the upstream access point's DU; this radio connection is called a backhaul link. After an IAB node establishes a complete backhaul link, it activates its DU function, which provides cell services, i.e., the DU can provide access services to the UE. A self-backhaul loop includes an IAB donor node, which has a directly connected wired transmission network. In a self-backhaul loop, all IAB nodes' DUs are connected to a Centralized Unit (CU) functional module, which configures the DUs via the F1-AP protocol. The CU configures the MT via the Radio Resource Control (RRC) protocol. Donor IAB nodes do not have an MT functional component.

[0044] The method for establishing an integrated dynamic access and backhaul network provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0045] Figure 3 This diagram illustrates a flowchart of a method for establishing an integrated mobile access and backhaul network according to an embodiment of this application. The method can be executed by a first communication device; in other words, the method can be performed by hardware or software installed on the first communication device. Figure 3 As shown, the method may include the following steps.

[0046] Step S201: When accessing the wireless network through the first base station, a request is made to be configured as an integrated mobile access and backhaul host (IAB donor); wherein, the first base station is an integrated fixed access and backhaul host.

[0047] It should be understood that the first communication device can be an IAB node, specifically a mobile IAB node installed on a vehicle, serving as a mobile self-backhaul relay base station to provide instant communication services to passengers.

[0048] When the first communication device is moving at high speed, it needs to switch between different fixed base stations (gNBs) to access the wireless network. The fixed base station can also be referred to as a fixed IAB donor. When the first communication device is accessing the wireless network through the first base station, it can send a first request to the network-side device to request to be configured as a mobile IAB donor.

[0049] In one implementation, the first request may specifically be a backhaul link establishment request, which may include a request to configure or enable the first communication device to become a mobile IAB donor.

[0050] Furthermore, the request is configured as a unified mobile access and backhaul host, including:

[0051] The request is sent to the first base station to be configured as an integrated mobile access and backhaul host; or,

[0052] The system requests to be configured as a unified mobile access and backhaul host by sending a request to the Operation Administration and Maintenance (OAM) server.

[0053] An IAB network is established based on the first communication device by configuring it as a mobile IAB donor. A backhaul link is established between the mobile IAB donor and the fixed IAB donor, and a backhaul link is established between the mobile IAB donor and its downstream IAB nodes.

[0054] Therefore, in this embodiment of the application, by requesting a fixed IAB donor to be configured as a mobile IAB donor through the first communication device to establish an IAB network, the frequent handover of mobile users during the movement process can be avoided, the amount of signaling during network handover can be reduced, and the interface load and air interface load can be reduced.

[0055] Figure 4 This diagram illustrates another flowchart of the method for establishing an integrated mobile access and backhaul network according to an embodiment of this application. Figure 4 As shown, the method may include the following steps.

[0056] S301. When accessing the wireless network through the first base station, a request is made to be configured as a mobile access and backhaul integrated host.

[0057] Step S301 can achieve the following: Figure 3 The same method embodiment as step S201 achieves the same technical effect, and the repeated parts will not be described again here.

[0058] S302. Receive a response message from a fixed IAB donor; wherein the response message is used to indicate whether the fixed access and backhaul integrated host is configured as a mobile access and backhaul integrated host.

[0059] Upon receiving the first request, the fixed IAB donor may decide whether to configure the first communication device as a mobile IAB donor and reply to the first communication device with the result via a response message.

[0060] S303. Establish an IAB network based on the mobile IAB donor.

[0061] When the fixed IAB donor decides to configure the first communication device as a mobile IAB donor, the mobile IAB donor will establish an IAB network based on the mobile IAB donor. Backhaul links will be established between the mobile IAB donor and the fixed IAB donor, as well as between the mobile IAB donor and its downstream IAB nodes. Specifically, the backhaul link between the integrated mobile access and backhaul host and the integrated fixed access and backhaul host is managed by the integrated fixed access and backhaul host, and the backhaul link between the integrated mobile access and backhaul host and its downstream integrated access and backhaul nodes is configured by the integrated mobile access and backhaul host.

[0062] Furthermore, after being configured as a mobile IAB donor, the mobile IAB donor will broadcast its identification information to enable adjacent communication devices to identify the mobile IAB donor and establish a backhaul link. The identification information can be set according to actual circumstances; if the first communication device is on a train, the identification information can be an identification code related to the train and / or train number.

[0063] An IAB network established based on a mobile IAB donor has the following characteristics.

[0064] The integrated mobile access and backhaul host includes: an integrated mobile access and backhaul host distributed unit module (IAB Distributed Unit, IAB-DU), an integrated mobile access and backhaul host mobile terminal module (IAB Mobile Termination, IAB-MT), and an integrated mobile access and backhaul host centralized unit module (IAB donor Centralized Unit, IAB-donor-CU).

[0065] In one implementation, when configured as a mobile access and backhaul integrated host, the first communication device will activate the mobile IAB-donor-CU and run in mobile access and backhaul integrated host mode. This means the first communication device has multiple operating modes, including: mobile IAB donor mode and mobile IAB node mode. When the first communication device is configured as a mobile IAB donor, the mobile IAB-donor-CU needs to be activated, thus allowing the first communication device to run in mobile IAB donor mode; however, if the first communication device is configured as a mobile IAB node, the IAB-donor-CU does not need to be activated, thus allowing the first communication device to run in mobile IAB node mode.

[0066] Furthermore, when configured as an integrated mobile access and backhaul host, the downstream communication equipment of the mobile IAB donor is connected to the mobile IAB-donor-CU, and the mobile IAB-MT is connected to the fixed IAB donor; wherein, the downstream communication equipment includes a downstream integrated access and backhaul node and a downstream terminal.

[0067] The link between the mobile IAB donor and the fixed IAB donor can be designed according to actual needs. In one embodiment, after establishing a backhaul link between the mobile IAB donor and the fixed IAB donor, an Xn interface is established between them, and data backhaul between them can be achieved through the Xn channel. Some backhaul logical channels or logical channels can be pre-configured between the fixed IAB donor and the mobile IAB donor. The mobile IAB donor selects a backhaul logical channel for the backhaul service based on the matching relationship between the QoS of the backhaul service and the QoS corresponding to the logical channel or logical channel.

[0068] Furthermore, the mobile IAB donor and the fixed IAB donor may not run the Backhaul Adaptation Protocol (BAP) protocol, that is, they can run the user plane radio protocol stack as RLC / MAC / PHY or PDCP / RLC / MAC / PHY.

[0069] In another implementation, the mobile IAB-donor-CU sends the requested backhaul logical channel or configuration information of the logical channel to the fixed IAB donor. The fixed IAB donor uses this information to determine the desired backhaul logical channel configuration or logical channel between the mobile IAB donor and the fixed IAB donor, and then implements the configuration. The configuration information may include the requested backhaul logical channel or logical channel, and the corresponding QoS parameters, including parameters such as rate, latency, and packet loss rate.

[0070] When the services of the mobile IAB network change, the mobile IAB-donor-CU can send a request to the fixed IAB donor to update the backhaul logical channel or logical channel. After receiving the request, the fixed IAB donor adjusts the configuration of the backhaul logical channel or logical channel, including adding, deleting and changing the configuration of the backhaul logical channel or logical channel.

[0071] Therefore, in this embodiment of the application, the first communication device requests the fixed IAB donor to be configured as a mobile IAB donor, and establishes backhaul links with the fixed IAB donor and downstream communication devices respectively. This can avoid frequent switching by mobile users during the mobile process, reduce the amount of signaling during network switching, and reduce interface load and air interface load.

[0072] Figure 5 This diagram illustrates another flowchart of the method for establishing an integrated mobile access and backhaul network according to an embodiment of this application. Figure 5 As shown, the method may include the following steps.

[0073] Step S401: When accessing the wireless network through the first base station, the request is to be configured as a mobile access and backhaul integrated host.

[0074] Step S401 can achieve the following: Figure 3 The same method embodiment as step S201 achieves the same technical effect, and the repeated parts will not be described again here.

[0075] Furthermore, prior to step S401, the method may further include:

[0076] The first communication device receives information that the first base station supports integrated mobile access and backhaul host access. The first communication device can preferentially select a base station that supports the mobile IAB donor function from among multiple accessible base stations and request that base station be configured as a mobile IAB donor.

[0077] Furthermore, when accessing the wireless network through the first base station, the first communication device can indicate to the fixed IAB donor that the first communication device supports the integrated mobile access and backhaul host function, thereby enabling the fixed IAB donor to decide whether to configure the first communication device as a mobile IAB donor as needed. In this case, the first communication device may not need to send the aforementioned request.

[0078] S402, Receive the response message from the fixed IAB donor.

[0079] S403. Access the IAB network according to the response message.

[0080] In one implementation, the response message indicates that the first communication device is configured as a mobile IAB donor by a fixed IAB donor, and then an IAB network is established based on the mobile IAB donor, such as... Figure 4 The method described in step S303 is repeated here, and the repeated parts will not be described again.

[0081] In another implementation, the response message indicates that the first communication device has been rejected by the fixed IAB donor from being configured as a mobile access and backhaul integrated host. In this case, the first communication device can be configured as a regular mobile IAB node.

[0082] In one implementation, the response message is further used to indicate that the first communication device is configured by the fixed IAB donor as a mobile IAB node to access the fixed IAB donor.

[0083] In another implementation, the response message is further used to indicate that the first communication device is configured by the fixed IAB donor as a mobile IAB node to access the configured mobile IAB donor. In this case, the configured mobile IAB donor can be other communication devices that support mobile IAB donor functionality.

[0084] In one implementation, if multiple communication devices send requests to a fixed IAB donor, and these requests are configured as mobile IAB donors (e.g., multiple mobile IAB nodes on the same train), the fixed IAB donor can select one to connect to as a mobile IAB donor, while configuring other adjacent mobile IAB nodes to connect to the configured mobile IAB donor and operate as ordinary IAB nodes.

[0085] Therefore, in this embodiment of the invention, by requesting a fixed IAB donor to be configured as a mobile IAB donor, and having the fixed IAB donor decide to configure it as an IAB donor and establish an IAB network, or decide to configure it as a regular IAB node to access the fixed IAB donor or the configured mobile IAB donor, frequent switching by mobile users during mobility can be avoided, the amount of signaling during network switching can be reduced, and interface load and air interface load can be reduced.

[0086] It should be noted that the method for establishing an integrated mobile access and backhaul network provided in this application embodiment can be executed by an apparatus for establishing an integrated mobile access and backhaul network, or by a control module within that apparatus for executing the method. This application embodiment uses an apparatus for establishing an integrated mobile access and backhaul network executing the method as an example to illustrate the apparatus provided in this application embodiment for establishing an integrated mobile access and backhaul network.

[0087] Figure 6 This illustration shows a schematic diagram of a device for establishing an integrated mobile access and backhaul network according to an embodiment of this application. Figure 6 As shown, the device includes a first transceiver module 501 and a first configuration module 502.

[0088] The first transceiver module 501 is used to access the wireless network through the first base station; the first configuration module 502 is used to request to be configured as a mobile access and backhaul integrated host when accessing the wireless network through the first base station; wherein, the first base station is a fixed access and backhaul integrated host.

[0089] Furthermore, the first transceiver module 501 is used to request the first base station to be configured as an integrated mobile access and backhaul host; or to request the operation and maintenance management server to be configured as an integrated mobile access and backhaul host.

[0090] Therefore, in this embodiment of the application, by requesting to be configured as a mobile IAB donor from a fixed IAB donor for the purpose of establishing an IAB network, frequent handovers by mobile users during mobility can be avoided, the amount of signaling during network handover can be reduced, and interface load and air interface load can be reduced.

[0091] Based on the above embodiments, further, the backhaul link between the integrated mobile access and backhaul host and the integrated fixed access and backhaul host is managed by the integrated fixed access and backhaul host, and the backhaul link between the integrated mobile access and backhaul host and its downstream integrated access and backhaul nodes is configured by the integrated mobile access and backhaul host.

[0092] Furthermore, the integrated mobile access and backhaul host includes: a distributed unit module of the integrated mobile access and backhaul host, a mobile terminal module of the integrated mobile access and backhaul host, and a centralized unit module of the integrated mobile access and backhaul host.

[0093] Furthermore, when configured as an integrated mobile access and backhaul host, the downstream communication devices of the integrated mobile access and backhaul host are connected to the centralized unit module of the integrated mobile access and backhaul host, and the mobile terminal module of the integrated mobile access and backhaul host is connected to the integrated fixed access and backhaul host; wherein, the downstream communication devices include downstream integrated access and backhaul nodes and downstream terminals.

[0094] Furthermore, when configured as an integrated mobile access and backhaul host, the centralized unit module of the integrated mobile access and backhaul host is activated, and the integrated mobile access and backhaul host mode is run.

[0095] Furthermore, when configured as an integrated mobile access and backhaul host, the method further includes:

[0096] The identification information of the integrated mobile access and backhaul host is broadcast to enable adjacent communication devices to identify the integrated mobile access and backhaul host and establish a backhaul link.

[0097] Furthermore, the identification information is an identification code associated with the train and / or train number.

[0098] Therefore, by requesting to be configured as a mobile IAB donor from the fixed IAB donor and establishing backhaul links with the fixed IAB donor and downstream communication equipment respectively, the embodiments of this application can avoid frequent switching of mobile users during the movement process, reduce the amount of signaling during network switching, and reduce interface load and air interface load.

[0099] Based on the above embodiments, further, when accessing the wireless network through the first base station, the first transceiver module is used to indicate to the fixed access and backhaul integrated host that the first communication device supports the functions of the mobile access and backhaul integrated host.

[0100] Furthermore, after the request is configured as a mobile access and backhaul integrated host, the first transceiver module is also configured to receive a response message from the fixed access and backhaul integrated host; wherein the response message is used to indicate whether the fixed access and backhaul integrated host has been configured as a mobile access and backhaul integrated host.

[0101] Furthermore, if the fixed access and backhaul integrated host refuses to configure the node as a mobile access and backhaul integrated host, the response message is also used to indicate that the node configured as a mobile access and backhaul integrated node by the fixed access and backhaul integrated host can access the fixed access and backhaul integrated host.

[0102] Furthermore, if the fixed access and backhaul integrated host refuses to configure it as a mobile access and backhaul integrated host, the response message is also used to instruct the fixed access and backhaul integrated host to configure the mobile access and backhaul integrated node to access the configured mobile access and backhaul integrated host.

[0103] Furthermore, before the request is configured as a unified mobile access and backhaul host, the first transceiver module also includes:

[0104] Receive information that the first base station supports integrated mobile access and backhaul host access functions.

[0105] Therefore, in this embodiment of the invention, by requesting a fixed IAB donor to be configured as a mobile IAB donor, and having the fixed IAB donor decide to configure it as an IAB donor and establish an IAB network, or decide to configure it as a regular IAB node to access the fixed IAB donor or the configured mobile IAB donor, frequent switching by mobile users during mobility can be avoided, the amount of signaling during network switching can be reduced, and interface load and air interface load can be reduced.

[0106] The device for establishing the integrated mobile access and backhaul network in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. This device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the type of terminal.

[0107] The mobile access and backhaul integrated network establishment apparatus provided in this application embodiment can achieve Figure 3 to Figure 5 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0108] Figure 7This diagram illustrates another flowchart of a method for establishing an integrated mobile access and backhaul network according to an embodiment of this application. The method can be executed by a second communication device; in other words, the method can be performed by hardware or software installed on the second communication device. Figure 7 As shown, the method may include the following steps.

[0109] Step S601: Receive the identification information of the integrated mobile access and backhaul host via broadcast; wherein the integrated mobile access and backhaul host establishes a backhaul link with the integrated fixed access and backhaul host.

[0110] Furthermore, the identification information is an identification code associated with the train and / or train number.

[0111] Furthermore, the second communication device is a mobile access and backhaul integrated node, or a terminal.

[0112] In one implementation, the second communication device can be another communication device located on the same train as the mobile IAB donor. After the fixed IAB donor is configured with the mobile IAB donor, the mobile IAB donor broadcasts its identification information. After establishing a backhaul link with the mobile IAB donor, the second communication device will act as a downstream communication device of the mobile IAB donor.

[0113] Step S602: Establish a backhaul link with the integrated mobile access and backhaul host.

[0114] Furthermore, the backhaul link between the integrated mobile access and backhaul host and the integrated fixed access and backhaul host is managed by the integrated fixed access and backhaul host, and the backhaul link between the second communication device and the integrated mobile access and backhaul host is configured by the integrated mobile access and backhaul host.

[0115] Furthermore, the integrated mobile access and backhaul host includes: a distributed unit module of the integrated mobile access and backhaul host, a mobile terminal module of the integrated mobile access and backhaul host, and a centralized unit module of the integrated mobile access and backhaul host.

[0116] Furthermore, the second communication device is connected to the centralized unit module of the integrated mobile access and backhaul host, and the mobile terminal module of the integrated mobile access and backhaul host is connected to the integrated fixed access and backhaul host.

[0117] Steps S601-S602 can be implemented Figure 4 The method embodiment of step S303 achieves the same or similar technical effects, and the repeated parts will not be described again here.

[0118] Therefore, by receiving the identification information of the mobile IAB donor, the embodiments of this application can access the IAB network established by the mobile IAB donor, thereby avoiding frequent handovers for mobile users during their movement, reducing the amount of signaling during network handovers, and lowering interface and air interface loads.

[0119] It should be noted that the method for establishing an integrated mobile access and backhaul network provided in this application embodiment can be executed by an apparatus for establishing an integrated mobile access and backhaul network, or by a control module within that apparatus for executing the method. This application embodiment uses an apparatus for establishing an integrated mobile access and backhaul network executing the method as an example to illustrate the apparatus provided in this application embodiment for establishing an integrated mobile access and backhaul network.

[0120] Figure 8 This illustration shows another structural diagram of the apparatus for establishing an integrated mobile access and backhaul network according to an embodiment of this application, as shown below. Figure 8 As shown, the device includes: a second transceiver module 701 and a second configuration module 702.

[0121] The second transceiver module 701 is used to receive identification information of the integrated mobile access and backhaul host via broadcast; wherein the integrated mobile access and backhaul host establishes a backhaul link with the integrated fixed access and backhaul host; the second configuration module 702 is used to establish a backhaul link with the integrated mobile access and backhaul host.

[0122] Furthermore, the identification information is an identification code associated with the train and / or train number.

[0123] Furthermore, the second communication device is a mobile access and backhaul integrated node, or a terminal.

[0124] Furthermore, the backhaul link between the integrated mobile access and backhaul host and the integrated fixed access and backhaul host is managed by the integrated fixed access and backhaul host, and the backhaul link between the second communication device and the integrated mobile access and backhaul host is configured by the integrated mobile access and backhaul host.

[0125] Furthermore, the integrated mobile access and backhaul host includes: a distributed unit module of the integrated mobile access and backhaul host, a mobile terminal module of the integrated mobile access and backhaul host, and a centralized unit module of the integrated mobile access and backhaul host.

[0126] Furthermore, the second communication device is connected to the centralized unit module of the integrated mobile access and backhaul host, and the mobile terminal module of the integrated mobile access and backhaul host is connected to the integrated fixed access and backhaul host.

[0127] Therefore, by receiving the identification information of the mobile IAB donor, the embodiments of this application can access the IAB network established by the mobile IAB donor, thereby avoiding frequent handovers for mobile users during their movement, reducing the amount of signaling during network handovers, and lowering interface and air interface loads.

[0128] The device for establishing the integrated mobile access and backhaul network in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. This device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the type of terminal.

[0129] The mobile access and backhaul integrated network establishment apparatus provided in this application embodiment can achieve Figure 7 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0130] Figure 9 This diagram illustrates another flowchart of a method for establishing an integrated mobile access and backhaul network according to an embodiment of this application. The execution entity of this method is a network-side device, which can be a base station, such as... Figure 9 As shown, the method may include the following steps.

[0131] Step S801: Receive a first request from the first communication device, the first request being used to request that the first communication device be configured as a mobile access and backhaul integrated host; wherein, the network-side device is a fixed access and backhaul integrated host.

[0132] Step S801 can achieve the following: Figure 3 The same method embodiment as step S201 achieves the same or similar technical effects, and the repeated parts will not be described again here.

[0133] Therefore, in this embodiment of the application, by requesting a fixed IAB donor to be configured as a mobile IAB donor through the first communication device to establish an IAB network, the frequent handover of mobile users during the movement process can be avoided, the amount of signaling during network handover can be reduced, and the interface load and air interface load can be reduced.

[0134] Based on the above embodiments, further, after step S601, the method further includes:

[0135] The first communication device is configured as a mobile access and backhaul integrated host, and the backhaul link established with the mobile access and backhaul integrated host is managed.

[0136] Furthermore, the integrated mobile access and backhaul host includes: a distributed unit module of the integrated mobile access and backhaul host, a mobile terminal module of the integrated mobile access and backhaul host, and a centralized unit module of the integrated mobile access and backhaul host.

[0137] Furthermore, when the first communication device is configured as an integrated mobile access and backhaul host, it is connected to the mobile terminal module of the integrated mobile access and backhaul host.

[0138] The above steps can achieve the following: Figure 4 The embodiments of the methods in steps S301-S303 achieve the same or similar technical effects, and the repeated parts will not be described again.

[0139] Therefore, this embodiment of the application configures the first communication device as a mobile IAB donor based on the first request of the first communication device, and establishes backhaul links with the fixed IAB donor and downstream communication devices respectively. This can avoid frequent switching of mobile users during the mobile process, reduce the amount of signaling during network switching, and reduce interface load and air interface load.

[0140] Based on the above embodiments, further, after step S601, the method further includes:

[0141] The first communication device was refused to be configured as a mobile access and backhaul integrated host.

[0142] Furthermore, after step S601, the method further includes:

[0143] The first communication device is configured as a mobile access and backhaul integrated node and connected to the fixed access and backhaul integrated host.

[0144] Furthermore, the method also includes:

[0145] Receive an instruction from the first communication device that it supports the integrated mobile access and backhaul host functionality.

[0146] Furthermore, prior to step S601, the method further includes:

[0147] Broadcast information supporting integrated host access for both mobile access and backhaul.

[0148] Furthermore, the method also includes:

[0149] Upon receiving a first request from multiple communication devices, one of the communication devices is selected and configured as a mobile access and backhaul integrated host, and the other communication devices are configured as mobile access and backhaul integrated nodes and connected to the mobile access and backhaul integrated host.

[0150] The above steps can achieve the following: Figure 5 The embodiments of the methods in steps S401-S403 achieve the same or similar technical effects, and the repeated parts will not be described again.

[0151] Therefore, in this embodiment of the invention, by receiving a first request from a first communication device, the fixed IAB donor decides to configure the first communication device as an IAB donor and establish an IAB network, or decides to configure it as a regular IAB node to access the fixed IAB donor or the configured mobile IAB donor, thereby avoiding frequent switching by mobile users during their movement, reducing the amount of signaling during network switching, and reducing interface load and air interface load.

[0152] It should be noted that the method for establishing an integrated mobile access and backhaul network provided in this application embodiment can be executed by an apparatus for establishing an integrated mobile access and backhaul network, or by a control module within that apparatus for executing the method. This application embodiment uses an apparatus for establishing an integrated mobile access and backhaul network executing the method as an example to illustrate the apparatus provided in this application embodiment for establishing an integrated mobile access and backhaul network.

[0153] Figure 10 This illustration shows another structural diagram of the apparatus for establishing an integrated mobile access and backhaul network according to an embodiment of this application, as shown below. Figure 10 As shown, the device includes a third transceiver module 901 and a third configuration module 902.

[0154] The third transceiver module 901 is used to receive a first request from the first communication device, the first request being used to request that the first communication device be configured as a mobile access and backhaul integrated host; wherein, the mobile access and backhaul integrated network establishment device is a fixed access and backhaul integrated host; the third configuration module 902 is used to process the first request.

[0155] Therefore, in this embodiment of the application, by requesting a fixed IAB donor to be configured as a mobile IAB donor through the first communication device to establish an IAB network, the frequent handover of mobile users during the movement process can be avoided, the amount of signaling during network handover can be reduced, and the interface load and air interface load can be reduced.

[0156] Based on the above embodiments, further, after receiving the first request from the first communication device, the third configuration module is used to configure the first communication device as a mobile access and backhaul integrated host, and manage the backhaul link established with the mobile access and backhaul integrated host.

[0157] Furthermore, the integrated mobile access and backhaul host includes: a distributed unit module of the integrated mobile access and backhaul host, a mobile terminal module of the integrated mobile access and backhaul host, and a centralized unit module of the integrated mobile access and backhaul host.

[0158] Furthermore, when the first communication device is configured as an integrated mobile access and backhaul host, it is connected to the mobile terminal module of the integrated mobile access and backhaul host.

[0159] Therefore, this embodiment of the application configures the first communication device as a mobile IAB donor based on the first request of the first communication device, and establishes backhaul links with the fixed IAB donor and downstream communication devices respectively. This can avoid frequent switching of mobile users during the mobile process, reduce the amount of signaling during network switching, and reduce interface load and air interface load.

[0160] Furthermore, after receiving the first request from the first communication device, the third configuration module is also configured to refuse to configure the first communication device as a mobile access and backhaul integrated host.

[0161] Furthermore, after receiving the first request from the first communication device, the third configuration module is also used to configure the first communication device to connect to the fixed access and backhaul integrated host.

[0162] Furthermore, the third transceiver module is also used for:

[0163] Receive an instruction from the first communication device that it supports the integrated mobile access and backhaul host functionality.

[0164] Furthermore, the third transceiver module is also used for:

[0165] Broadcast information supporting integrated host access for both mobile access and backhaul.

[0166] Furthermore, the third configuration module is also used to select one of the communication devices as a mobile access and backhaul integrated host when receiving a first request from multiple communication devices, and to configure the other communication devices as mobile access and backhaul integrated nodes to access the mobile access and backhaul integrated host.

[0167] Therefore, in this embodiment of the invention, by receiving a first request from a first communication device, the fixed IAB donor decides to configure the first communication device as an IAB donor and establish an IAB network, or decides to configure it as a regular IAB node to access the fixed IAB donor or the configured mobile IAB donor, thereby avoiding frequent switching by mobile users during their movement, reducing the amount of signaling during network switching, and reducing interface load and air interface load.

[0168] Optional, such as Figure 11 As shown, this application embodiment also provides a communication device 1000, including a processor 1001, a memory 1002, and a program or instructions stored in the memory 1002 and executable on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instructions executed by the processor 1001 implement the various processes of the above-described method embodiment for establishing an integrated mobile access and backhaul network, and achieve the same technical effect. When the communication device 1000 is a network-side device, the program or instructions executed by the processor 1001 implement the various processes of the above-described method embodiment for establishing an integrated mobile access and backhaul network, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0169] Specifically, embodiments of this application also provide a network-side device. For example... Figure 12 As shown, the network device 1100 includes an antenna 111, a radio frequency (RF) device 112, and a baseband device 113. The antenna 111 is connected to the RF device 112. In the uplink direction, the RF device 112 receives information through the antenna 111 and transmits the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be transmitted and sends it to the RF device 112. The RF device 112 processes the received information and transmits it through the antenna 111.

[0170] The aforementioned frequency band processing device can be located in the baseband device 113. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 113, which includes a processor 114 and a memory 115.

[0171] Baseband device 113 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 12 As shown, one of the chips, for example, is a processor 114, which is connected to a memory 115 to call the program in the memory 115 and execute the network device operations shown in the above method embodiment.

[0172] The baseband device 113 may also include a network interface 116 for exchanging information with the radio frequency device 112, such as a common public radio interface (CPRI).

[0173] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 115 and executable on processor 114, wherein processor 114 calls the instructions or programs in memory 115 to execute. Figure 10 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0174] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described method for establishing an integrated mobile access and backhaul network, and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0175] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0176] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described method embodiment for establishing an integrated mobile access and backhaul network, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0177] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0178] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0179] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0180] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for establishing a mobile access and backhaul integrated network, characterized in that, The method is performed by a first communication device, and comprises: In the case of accessing a wireless network through a first base station, a request is configured to be a mobile access and backhaul host; wherein the first base station is a fixed access and backhaul host, and the mobile access and backhaul host comprises a mobile access and backhaul host distributed unit module, a mobile access and backhaul host mobile terminal module and a mobile access and backhaul host centralized unit module; in the case of being configured to be the mobile access and backhaul host, a downstream communication device of the mobile access and backhaul host is connected with the mobile access and backhaul host centralized unit module, and the mobile access and backhaul host mobile terminal module is connected with the fixed access and backhaul host.

2. The method of claim 1, wherein, The request configured to be the mobile access and backhaul host comprises: Requesting the first base station to be configured to be the mobile access and backhaul host; or, Requesting an operation, maintenance and management server to be configured to be the mobile access and backhaul host.

3. The method of claim 1, wherein, The backhaul link between the mobile access and backhaul host and the fixed access and backhaul host is managed by the fixed access and backhaul host, and the backhaul link between the mobile access and backhaul host and a downstream access and backhaul integrated node thereof is configured by the mobile access and backhaul host.

4. The method of claim 1, wherein, The downstream communication device comprises a downstream access and backhaul integrated node and a downstream terminal.

5. The method of claim 1, wherein, In the case of being configured to be the mobile access and backhaul host, a mobile access and backhaul host centralized unit module is activated, and a mobile access and backhaul host mode is run.

6. The method of claim 1, wherein, In the case of accessing the wireless network through the first base station, the method further comprises: Indicating, to the fixed access and backhaul host, that the first communication device supports the function of the mobile access and backhaul host.

7. The method of claim 1, wherein, After the request configured to be the mobile access and backhaul host, the method further comprises: Receiving a response message of the fixed access and backhaul host; wherein the response message is used to indicate whether to be configured to be the mobile access and backhaul host by the fixed access and backhaul host.

8. The method of claim 7, wherein, The response message is also used to indicate that the mobile access and backhaul node is accessed to the fixed access and backhaul host by the fixed access and backhaul host.

9. The method of claim 7, wherein, The response message is also used to indicate that the mobile access and backhaul node is accessed to the configured mobile access and backhaul host by the fixed access and backhaul host.

10. The method of claim 1, wherein, Before the request configured to be the mobile access and backhaul host, the method further comprises: Receiving information that the first base station supports the function of the mobile access and backhaul host access.

11. The method of claim 1, wherein, In the case of being configured to be the mobile access and backhaul host, the method further comprises: Broadcasting identification information of the mobile access and backhaul host, which is used to enable a neighboring communication device to identify the mobile access and backhaul host and establish a backhaul link.

12. The method of claim 11, wherein, The identification information is an identification code related to a train and / or a train number.

13. A device for establishing an integrated mobile access and backhaul network, characterized in that, Comprise: The first transceiver module is configured to access a wireless network through a first base station. The first configuration module is configured to request to be configured as a mobile access and backhaul integrated host in the case of accessing the wireless network through the first base station; wherein the first base station is a fixed access and backhaul integrated host, and the mobile access and backhaul integrated host comprises a mobile access and backhaul integrated host distributed unit module, a mobile access and backhaul integrated host mobile terminal module and a mobile access and backhaul integrated host centralized unit module; in the case of being configured as the mobile access and backhaul integrated host, downstream communication equipment of the mobile access and backhaul integrated host is connected with the mobile access and backhaul integrated host centralized unit module, and the mobile access and backhaul integrated host mobile terminal module is connected with the fixed access and backhaul integrated host.

14. A method for establishing a mobile access and backhaul integrated network, characterized in that, The second communication device is configured to perform the following steps: receiving identification information of the mobile access and backhaul integrated host through broadcasting; wherein the mobile access and backhaul integrated host establishes a backhaul link with a fixed access and backhaul integrated host; establishing a backhaul link with the mobile access and backhaul integrated host; The mobile access and backhaul integrated host comprises a mobile access and backhaul integrated host distributed unit module, a mobile access and backhaul integrated host mobile terminal module and a mobile access and backhaul integrated host centralized unit module; the second communication device is connected with the mobile access and backhaul integrated host centralized unit module, and the mobile access and backhaul integrated host mobile terminal module is connected with the fixed access and backhaul integrated host.

15. The method of claim 14, wherein, The backhaul link between the mobile access and backhaul integrated host and the fixed access and backhaul integrated host is managed by the fixed access and backhaul integrated host, and the backhaul link between the second communication device and the mobile access and backhaul integrated host is configured by the mobile access and backhaul integrated host.

16. The method of claim 14, wherein, The identification information is an identification code related to a train and / or a train service.

17. The method of claim 14, wherein, The second communication device is a mobile access and backhaul integrated node or a terminal.

18. An apparatus for establishing an integrated mobile access and backhaul network, characterized in that, The second communication device is configured to perform the following steps: The second transceiver module is configured to receive identification information of the mobile access and backhaul integrated host through broadcasting; wherein the mobile access and backhaul integrated host establishes a backhaul link with a fixed access and backhaul integrated host; The second configuration module is configured to establish a backhaul link with the mobile access and backhaul integrated host; The mobile access and backhaul integrated host comprises a mobile access and backhaul integrated host distributed unit module, a mobile access and backhaul integrated host mobile terminal module and a mobile access and backhaul integrated host centralized unit module; the second communication device is connected with the mobile access and backhaul integrated host centralized unit module, and the mobile access and backhaul integrated host mobile terminal module is connected with the fixed access and backhaul integrated host.

19. A method for establishing a mobile access and backhaul integrated network, characterized in that, The network side device is configured to perform the following steps: receiving a first request of a first communication device, the first request being used to request to configure the first communication device as a mobile access and backhaul integrated host; wherein the network side device is a fixed access and backhaul integrated host; wherein the mobile access and backhaul integrated host comprises a mobile access and backhaul integrated host distributed unit module, a mobile access and backhaul integrated host mobile terminal module and a mobile access and backhaul integrated host centralized unit module; in the case of configuring the first communication device as the mobile access and backhaul integrated host, connecting with the mobile access and backhaul integrated host mobile terminal module.

20. The method of claim 19, wherein, After receiving the first request of the first communication device, the method further comprises: configuring the first communication device as the mobile access and backhaul integrated host, and managing a backhaul link established with the mobile access and backhaul integrated host.

21. The method of claim 19, wherein, After receiving the first request of the first communication device, the method further comprises: rejecting to configure the first communication device as the mobile access and backhaul integrated host.

22. The method of claim 19, wherein, After receiving the first request of the first communication device, the method further comprises: configuring the first communication device as the mobile access and backhaul integrated node to access the fixed access and backhaul integrated host.

23. The method of claim 19, wherein, The method further comprises: receiving an indication that the first communication device supports the function of the mobile access and backhaul integrated host.

24. The method of claim 19, wherein, The method further comprises: broadcasting information supporting the function of the mobile access and backhaul integrated host access.

25. The method of claim 19, wherein, The method further comprises: in the case of receiving the first request of a plurality of communication devices, selecting one of the communication devices to be configured as the mobile access and backhaul integrated host, and configuring the other communication devices as the mobile access and backhaul integrated node to access the mobile access and backhaul integrated host.

26. An apparatus for establishing a mobile access and backhaul integrated network, the apparatus comprising: comprises: a third transceiving module, configured to receive a first request of a first communication device, the first request being used to request to configure the first communication device as a mobile access and backhaul integrated host; wherein the mobile access and backhaul integrated network establishment apparatus is a fixed access and backhaul integrated host; a third configuration module, configured to process the first request; wherein the mobile access and backhaul integrated host comprises a mobile access and backhaul integrated host distributed unit module, a mobile access and backhaul integrated host mobile terminal module and a mobile access and backhaul integrated host centralized unit module; in the case of configuring the first communication device as the mobile access and backhaul integrated host, connecting with the mobile access and backhaul integrated host mobile terminal module.

27. A communications device, characterized by comprises a processor, a memory and a program or instruction stored in the memory and executable on the processor, when the program or instruction is executed by the processor, the steps of the mobile access and backhaul integrated network establishment method according to any one of claims 1 to 12 are implemented, or the steps of the mobile access and backhaul integrated network establishment method according to any one of claims 14 to 17 are implemented.

28. A network-side device, comprising: A computer program product, comprising a computer readable storage medium having stored thereon instructions that, when executed, by a processor, perform the steps of the method of any of claims 1-12, or perform the steps of the method of any of claims 14-17, or perform the steps of the method of any of claims 19-25.

29. A readable storage medium, characterized by, The computer program product, comprising a computer readable storage medium having stored thereon instructions that, when executed, by a processor, perform the steps of the method of any of claims 1-12, or perform the steps of the method of any of claims 14-17, or perform the steps of the method of any of claims 19-25.

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