CN114449602A

CN114449602A - Handover method, storage medium, and wireless communication device

Info

Publication number: CN114449602A
Application number: CN202210102793.2A
Authority: CN
Inventors: 王丽萍; 生嘉
Original assignee: Shenzhen TCL New Technology Co Ltd
Current assignee: Shenzhen TCL New Technology Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-05-06
Anticipated expiration: 2042-01-27
Also published as: CN114449602B

Abstract

A switching method is executed in a wireless communication device which is used as a satellite flash terminal node. And the basic service layer of the satellite flash terminal node reports the target G node information expecting to move to the basic service layer of the source satellite flash management node. And after receiving the relevant information required by moving to the target satellite flash management node from the source satellite flash management node, the satellite flash terminal node leaves from the G domain where the source satellite flash management node is located, disconnects the relevant connection with the source satellite flash management node, and establishes a new connection with the target satellite flash management node. And the satellite flash terminal node replies a switching completion message to the target satellite flash management node through a basic service layer of the satellite flash terminal node, and the switching operation from the source satellite flash management node to the target satellite flash management node is completed.

Description

Handover method, storage medium, and wireless communication device

Technical Field

The present application relates to the field of electronic technologies, and in particular, to a handover method, a storage medium, and a wireless communication apparatus.

Background

With the development of communication technology, the demand of people for communication is changing continuously, and the application scene of communication is gradually expanded from information interaction between people to information interaction between people and objects. In recent years, the technology of internet of things is continuously developed, new application scenes based on new requirements are continuously increased, the traditional short-distance communication technology cannot well meet the new application scenes and the requirements, and a new short-distance communication technology for providing the performance of a short-distance communication system is developed.

The new short-distance communication technology of the sparkLink of the satellite-Union of flashing is oriented to application scenes in the fields of intelligent automobiles, intelligent manufacturing, intelligent houses, intelligent terminals and the like, is a wireless short-distance communication technology and is used for bearing data interaction of the application scenes in the fields of intelligent automobiles, intelligent houses, intelligent terminals, intelligent manufacturing and the like. Generally, a single management node G node and a plurality of managed nodes T node are connected to form a communication domain together, so as to implement a specific communication function. For example, in an intelligent automobile scene, a vehicle domain controller serves as a G node, and a plurality of vehicle terminals serve as T nodes, so that a communication domain of an intelligent cabin can be formed, and vehicle audio and video services are provided for users. In an intelligent home environment, an intelligent large screen serves as a G node, and can serve as a T node together with a plurality of sound equipment to form a communication domain, so that high-quality home audio and video services are provided for users. Under the intelligent manufacturing scene, each controller on a single production line of a factory is used as a G node and is communicated with an actuator and a sensor in a local range as a T node to form a communication domain, so that the accurate control functions of assembly, packaging and the like are realized.

In addition to one-to-one data transmission from node to node, the satellite flash technology can also support one-to-many data transmission, i.e. broadcasting. In the current satellite flash 1.0 version, only the support of the broadcast service is considered, and the support of the mobility scene to the broadcast service is not considered.

Therefore, a new handover method is needed to support mobile satellite flash communication devices.

Disclosure of Invention

The invention provides a switching method, a storage medium and a wireless communication device.

In a first aspect, an embodiment of the present application provides a handover method, executed in a wireless communication device, where the wireless communication device is used as a satellite flash terminal node, and includes:

the basic service layer of the satellite flash terminal node reports target G node information expecting to move to the basic service layer of the source satellite flash management node;

after receiving the relevant information required by moving to the target star flash management node from the source star flash management node, the star flash terminal node leaves from the G domain where the source star flash management node is located, disconnects the relevant connection with the source star flash management node, and establishes a new connection with the target star flash management node; and

and the satellite flash terminal node replies a switching completion message to the target satellite flash management node through a basic service layer of the satellite flash terminal node, and the switching operation from the source satellite flash management node to the target satellite flash management node is completed.

In a second aspect, an embodiment of the present invention provides a wireless communication apparatus, including a processor configured to call and execute a computer program stored in a memory, so as to cause a device in which the processor is installed to execute the method of the first aspect disclosed above.

In a third aspect, an embodiment of the present invention provides a handover method, executed in a wireless communication apparatus as a source satellite flash management node, including:

the source satellite flash management node receives target G node information which is expected to move and reported by a satellite flash terminal node;

the source satellite flash management node receives a physical layer link transmission condition of a transmission link between the source satellite flash management node and the satellite flash terminal node, wherein the physical layer link transmission condition is reported by the satellite flash terminal node;

the source satellite flash management node makes a switching decision according to the physical layer link transmission condition reported by the satellite flash terminal node after measurement and the target G node information expected to move reported by the satellite flash terminal node; if the source satellite flash management node decides to start the switching operation in the switching decision, initiating a switching request message about the switching operation of the satellite flash terminal node to the target satellite flash management node; and

and after receiving a switching request response message of the target satellite flash management node responding to the switching request message, the source satellite flash management node sends the content in the switching request response message to a basic service layer of the satellite flash terminal node through the basic service layer of the source satellite flash management node.

In a fourth aspect, an embodiment of the present invention provides a wireless communication apparatus, including a processor configured to call and execute a computer program stored in a memory, so as to cause a device in which the processor is installed to execute the method of the third aspect disclosed above.

In a fifth aspect, an embodiment of the present invention provides a handover method executed in a wireless communication device, where the wireless communication device is a target satellite flash management node, and the handover method includes:

after receiving a switching request message about switching operation of a satellite flash terminal node, the target satellite flash management node of a target G domain performs access control on the switching request message of the satellite flash terminal node;

the target satellite flash management node performs access control on the satellite flash terminal node according to the broadcast service information which is received by the satellite flash terminal node and is obtained through the switching request message and the resource condition of the target satellite flash management node;

if the target satellite flash management node determines that the movement of the satellite flash terminal node cannot be accessed, replying a switching refusing message to a source satellite flash management node; and

and if the target satellite flash management node determines that the movement of the satellite flash terminal node can be accessed, replying a switching request response message to the source satellite flash management node to respond to the switching request message.

In a sixth aspect, an embodiment of the present invention provides a wireless communication apparatus, including a processor configured to call and execute a computer program stored in a memory, so as to cause a device in which the processor is installed to execute the method of the fifth aspect disclosed above.

The disclosed methods may be programmed as computer-executable instructions stored in a non-transitory computer-readable medium. The non-transitory computer-readable medium, when loaded into a computer, instructs the processor of the computer to perform the disclosed methods.

The non-transitory computer-readable medium may include at least one of the group consisting of: hard disks, CD-ROMs, optical storage devices, magnetic storage devices, Read-Only memories, Programmable Read-Only memories, Erasable Programmable Read-Only memories (EPROMs), Electrically Erasable Programmable Read-Only memories (EEPROMs), and flash memories.

The disclosed methods may be programmed as a computer program product that causes a computer to perform the disclosed methods.

The disclosed methods may be programmed as a computer program that causes a computer to perform the disclosed methods.

The technical effects are as follows:

the invention provides a new switching method, wherein an access layer of a satellite flash terminal node receives a system message of a source satellite flash management node through a physical layer common channel to obtain a broadcast service information indication of a neighboring cell. Or, the satellite flash terminal node sends a neighbor cell broadcast service query request message to obtain a broadcast service information indication of the neighbor cell. After receiving the relevant information required by moving to the target satellite flash management node from the source satellite flash management node, the satellite flash terminal node leaves from the G domain where the source satellite flash management node is located, breaks the relevant connection with the source satellite flash management node, and establishes a new connection with the target satellite flash management node. By the novel switching method provided by the invention, the satellite flash terminal node can complete the switching operation from the source satellite flash management node to the target satellite flash management node.

Drawings

Fig. 1 shows a schematic diagram of a satellite flash wireless communication system.

Fig. 2 shows a schematic diagram of the classification of the satellite flash node into a G node and a T node.

Fig. 3 shows a mapping relationship diagram of three layers of communication protocols in the star flash node.

Fig. 4 shows a schematic structure diagram of a satellite flash wireless communication system.

Fig. 5 shows a schematic flow chart of the T node obtaining the broadcast service information of the neighboring cell.

Fig. 6 is a schematic diagram illustrating an interaction flow of two G-node broadcast service message cells (information elements).

Fig. 7 shows a schematic diagram of sending a broadcast service information indication of a neighboring cell based on a basic service layer broadcast mode inside a G domain.

Fig. 8 shows a schematic diagram of sending a broadcast service information indication of a neighboring cell based on an access stratum broadcast mode inside a G domain.

Fig. 9 shows a schematic diagram of sending a broadcast service information indicator of a neighboring cell based on an access stratum system message broadcast mode inside a G domain.

Fig. 10 shows a schematic diagram of sending broadcast service information indication of a neighboring cell based on a query manner inside the G domain.

Fig. 11 shows a schematic diagram of a G node performing neighboring G node broadcast service message indication through a dedicated transmission control channel.

Fig. 12 shows a schematic switching process of moving the T node from the source star flash management node G1 to the target star flash management node G2.

Fig. 13 shows a mobility scenario diagram of the satellite flash terminal node T3 moving from the source domain G01 to the target domain G02.

Fig. 14 shows a schematic diagram of a target G domain expecting to move reported by a T node to a G node.

Fig. 15 shows a schematic diagram of a target G domain expecting to move reported by a T node to a G node.

Detailed Description

The invention provides a switching method, a storage medium and a wireless communication device,

with the evolution of the satellite flash technology, as the next stage of the development of the satellite flash 2.0, a mobility scenario will be an important application scenario, and the mobility scenario can support the movement of flexible T nodes in each G domain. In addition, in the mobility scenario, broadcast services are also a typical data service type. For broadcast reception of the T node in a mobile scene, if the broadcast service transmission information of other G domains can be known in advance, the T node can be assisted to perform better selection on a target G domain to be moved, which is beneficial to continuity of the T node broadcast service. In this case, the interaction of the broadcast service information between the satellite flash G domains needs to be properly designed. The invention mainly provides a corresponding solution and a detailed design aiming at the switching operation (Handover) in the satellite flash wireless communication system.

Referring to fig. 1, the satellite flash wireless communication system is composed of a satellite flash access layer 110, the basic service layer 120, and the basic application layer 130. As shown in fig. 1, the star flash access layer 110 may also be referred to as a star flash base layer 101, and the base service layer 120 and the base application layer 130 form a star flash upper layer 102.

The star flash access layer 110 is divided into a management node (referred to as a G node) and a terminal node (referred to as a T node) according to different implementation functions, where the G node provides services of the access layer, such as connection management, resource allocation, information security, and the like, for the T node under its coverage. The star flash access layer 110 realizes transmission and interaction of upper layer service data of the G node and the T node over the air interface.

Referring to fig. 2, the star flash node T3 includes three parts, namely, a star flash access layer 110b, the basic service layer 120b, and the basic application layer 130 b. The star flash access layer 110b may also be referred to as a star flash bottom layer 101b, and the base service layer 120b and the base application layer 130b constitute a star flash upper layer 102 b. The star flash node G1 includes a star flash access layer 110a, the base service layer 120a, and the base application layer 130 a. The star flash access layer 110a may also be referred to as a star flash base layer 101a, and the base service layer 120a and the base application layer 130a constitute a star flash upper layer 102 a. The star flash node G2 includes three parts, namely, a star flash access layer 110c, the base service layer 120c, and the base application layer 130 c. The star flash access layer 110c may also be referred to as a star flash base layer 101c, and the base service layer 120c and the base application layer 130c constitute a star flash upper layer 102 c.

Considering that service scenarios have different transmission requirements for wireless short-range communication, the satellite flash access layer 110 provides two communication interfaces, i.e., SparkLink Basic (SLB)111 (e.g., SLB 111a, SLB 111b, and SLB 111c) and SparkLink Low Energy (SLE)112 (e.g., SLE 112a, SLE 112b, and SLE 112c), for the satellite flash upper layer 102. The SLB 111 uses multiple technologies such as ultra-short frames, multipoint synchronization, bidirectional authentication, fast interference coordination, bidirectional authentication encryption, cross-layer scheduling optimization, and the like, and is used to support a service scenario with transmission requirements such as low time delay, high reliability, fine synchronization, high concurrency, high security, and the like. The SLE 112 adopts Polar channel coding to improve transmission reliability, reduce retransmission and save power consumption, simultaneously supports maximum 4MHz transmission bandwidth and maximum 8PSK modulation, supports 1-pair multi-reliable multicast, supports characteristics such as 4KHz short delay interaction and the like, fully considers energy-saving factors while ensuring transmission efficiency as much as possible, and is used for bearing service scenes with low power consumption appeal. SLB 111 and SLE 112 are oriented to different service requirements, provide different transmission services, complement each other and perform continuous smooth evolution according to service requirements.

In addition to one-to-one data transmission from node to node, the satellite flash technology can also support one-to-many data transmission, i.e. broadcasting. The existing satellite flash broadcasting scheme is to perform indifferent direct broadcasting after an end-to-end transmission channel is established between nodes.

Referring to fig. 2, the star flash node T3 may specifically be used as a star flash terminal node (T node). The star flash node G1 may serve as a star flash management node (G node). The star flash node G2 may act as a G node. In the following embodiments, the star flash node T3 may serve as a moving star flash terminal node, the star flash node G1 may serve as a source star flash management node, and the star flash node G2 may serve as a target star flash management node. It should be understood that such an embodiment is only for illustration and not for limitation, and in different embodiments, other nodes besides the star flash node T3 may serve as mobile star flash terminal nodes, the star flash node G1 or other nodes may serve as target star flash management nodes, and the star flash node G2 or other nodes may serve as source star flash management nodes.

After the broadcast data of the basic application layer 130a of the flash management node G1 arrives at the basic service layer 120a, the basic service layer 120a is triggered to first establish a transmission channel broadcast TCID (dynamically allocated), and the access layer 110a is notified to also establish a corresponding logical channel. Subsequently, the base application layer 130a instructs the service discovery module of the base service layer 120a to notify the access layer 110a to publish broadcast service information and broadcast service data. For the satellite flash terminal node T3, the basic application layer 130b instructs the service discovery module of the basic service layer 120b to notify the access layer 110b to scan for broadcast services on physical resources, and the access layer 110b feeds back the scanning result to the service discovery module. Subsequently, the base service layer 120 of the flash termination node T3 starts to establish a Transport Channel Identifier (TCID) of a data Transport Channel, and instructs the access layer 110b to establish a data logical Channel, and finally starts to receive broadcast service data from the flash management node G1.

Referring to fig. 3, a star flash node three-layer protocol stack transmission mapping relationship is shown in fig. 3. The terminology used herein and in FIG. 3 is as shown in Table 1 below:

table 1

The star flash base application layer 130 includes service access nodes corresponding to a control plane and a data plane for C-SAP and D-SAP, respectively. The basic service layer 120 includes SMTC, CMTC, RSMTC, MDCTC, 5GITC, DTTC, and BTTC transmission channels. The SMTC, the CMTC, the RSMTC, the MDCTC, and the 5GITC correspond to transmission channels of the control plane of the basic service layer 120, and respectively represent a service management transmission channel, a general management transmission channel, a relay service management transmission channel, a multi-domain coordination transmission channel, and a 5G convergence transmission channel, and are used for interacting end-to-end control signaling of each functional unit of the basic service layer 120; the DTTC and the BTTC correspond to a transmission channel of the data plane of the basic service layer 120, and respectively represent a dedicated service transmission channel and a broadcast service transmission channel, which are used for end-to-end data interaction of each functional unit of the basic service layer 120. The satellite flash access layer 110 includes four logical channels, namely, BCLC, DCLC, DTLC, and BTLC. Wherein, the BCLC and the DCLC correspond to a logical channel of a control plane (control plane) of the access layer 110, and respectively represent a broadcast control logical channel and a dedicated control logical channel, which are used for interaction of end-to-end control signaling of the access layer 110; the DTLC and the BTLC correspond to a logical channel of a data plane (data plane) of the access layer 110, and respectively represent a dedicated service logical channel and a broadcast service logical channel, which are used for end-to-end data interaction of the access layer 110.

Referring to fig. 4, a communication system comprising satellite flash management nodes G1 and G2, and a plurality of satellite flash terminal nodes (including satellite flash terminal nodes T3 and T4) performs the disclosed method according to one embodiment of the present disclosure. Fig. 4 shows that the system may include more network communication entities, for illustrative and non-limiting purposes. The star flash management node G1 may be an instance of a star flash management node. The star flash terminal nodes T3 and T4 may be examples of star flash terminal nodes. Connections between components, between modules and module assemblies, and between equipment and equipment assemblies are illustrated in the figures as lines and arrows. The star flash termination node T3 may include a processor 11a, a memory 12a, and a transceiver 13 a. The star flash termination node T4 may include a processor 11b, a memory 12b, and a transceiver 13 b. The star flash management node G1 may include a processor 21a, a memory 22a and a transceiver 23 a. The star flash management node G2 may include a processor 21b, a memory 22b and a transceiver 23 b. Each of the

processors

11a, 11b, 21a and 21b may be configured to implement the proposed functions, procedures and/or methods described in the description. The layers of the star flash protocol may be implemented in said

processors

11a, 11b, 21a and 21 b. Each of the

memories

12a, 12b, 22a and 22b may store various programs and information such that the coupled processors operate to store the various programs and access the information to perform the proposed functions, programs and/or methods. Each of the

transceivers

13a, 13b, 23a and 23b is operatively coupled with a connected processor, transmitting and/or receiving radio signals or wired signals. The star flash management nodes G1 and G2 may be servers, base stations, or other types of radio nodes or wired nodes, and may transmit broadcast service data and broadcast service information for the star flash terminal node T3 and the star flash terminal node T4. The telecommunication system comprises a group of star flash management nodes 14 and a group of star flash management nodes 15. The star flash management node group 14 includes a plurality of star flash management nodes, such as a star flash terminal node T3. The star flash management node group 15 includes a plurality of star flash management nodes, such as a star flash terminal node T4.

Each of the

processors

11a, 11b, 21a, and 21b may include an application-specific integrated circuit (ASIC), other chipsets, logic circuitry, and/or data processing devices. Each of the

memories

12a, 12b, 22a, and 22b may include a read-only memory (ROM), a Random Access Memory (RAM), a flash memory, a memory card, a storage medium, and/or other storage devices. Each

transceiver

13a, 13b, 23a, and 23b may include a baseband circuit and a Radio Frequency (RF) circuit to process radio frequency signals. When the present embodiment is implemented in software, the techniques described herein may be implemented with modules, programs, functions, entities, etc. to perform the functions described herein. These modules may be stored in the memory and executed by the processor. The memory may be implemented within the processor or external to the processor, and may be communicatively coupled to the processor via various means as is known in the art. A satellite flash node may be a wireless communication device, such as a sensor, computer, mobile device, camera, or plant equipment with wireless communication capabilities. The service management unit, the connection management unit and the data link layer management entity are modules defined in the standard file of the satellite flash.

In order to enable the communication system of the satellite flash to support the T node to continuously receive the broadcast service in the handover scene, the T node needs to obtain the broadcast service information supported by the neighboring cell before handover. Specifically, the method comprises the following two steps: and G domains perform broadcast service information interaction and G domains perform broadcast service information indication of adjacent domains inside. As shown in particular in fig. 5.

Referring to fig. 5, in one embodiment, the handover method includes interaction of broadcast service information between G domains (step a1) and indication of broadcast service information of the neighborhood within G domains (step a 2).

Step A1: broadcast service information interaction between G domains:

in order to support the broadcast service reception in the handover scenario, the two G domains need to perform interaction of related information. As shown in particular in fig. 6.

The multi-domain coordination and management function unit 121a of the basic service layer 120a of the source flash management node G1 sends a broadcast service query request message (a11) to the multi-domain coordination and management function unit 121c of the basic service layer 120c of the target flash management node G2, where the broadcast service query request message includes broadcast service information currently supported by the source flash management node G1 and an indication that a requested party needs to feed back the broadcast service information. The current broadcast service information supported by the source flash management node G1 includes at least one or a combination of the following information of the source flash management node G1: the broadcast service list, the broadcast service name, the broadcast service AID, the broadcast service port number, the broadcast service sending period and the broadcast service QoS.

After receiving the broadcast service query request message, the multi-domain coordination and management function unit 121c of the base service layer 120c of the target star flash management node G2 feeds back a broadcast service query response message (a12) to the multi-domain coordination and management function unit 121a of the base service layer 120a of the source star flash management node G1, where the broadcast service query response message includes broadcast service information currently supported by the target star flash management node G2. The current broadcast service information supported by the target flash management node G2 includes at least one or a combination of the following information of the target flash management node G2: the method comprises the steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time, a frequency point where the broadcast service is located and physical resource information sent by the broadcast service.

Fig. 6 is a schematic diagram illustrating an interaction flow of two G nodes broadcasting service message cells (information elements). The method is mainly a cross-node interaction process between two G nodes. Which contains two messages: a broadcast service query request message and a broadcast service query response message. The two messages are applicable to a management mode or a non-management mode, and the sending direction is from the G node to the opposite end G node.

Step A2: g, indication of broadcast service information of adjacent regions in the domain:

after the G node (e.g., the source star flash management node G1) obtains the indication of the broadcast service information of the neighboring cell (e.g., including the broadcast service information of the target star flash management node G2), it needs to indicate to one or more star flash T nodes (e.g., the star flash terminal node T3) in its domain to assist one or more T nodes in its domain to know the broadcast service information of other G domains, so as to perform corresponding processing. The specific G node (for example, the source star flash management node G1) notifies the T node (for example, the star flash terminal node T3) in the G domain that the broadcast service information indication of the neighboring cell of the T node may be notified in two ways: broadcast-based or query-based. The broadcast service information indication flow of the neighboring cell based on the broadcast mode is shown in fig. 7.

The multi-domain coordination and management function unit 121a of the basic service layer 120a of the source satellite flash management node G1 sends detailed broadcast service information (a21) supported by G nodes of adjacent G domains to the multi-domain coordination and management function unit of the basic service layer of each T node in the domain where the source satellite flash management node G1 is located (e.g., the multi-domain coordination and management function unit 121b of the basic service layer 120b of the satellite flash terminal node T3) one-to-one. The detailed broadcast service information supported by the G node of the adjacent G domain specifically includes: g node identification (such as MAC ID layer two identification) of the adjacent G domain, and broadcast service information supported by the G node of the adjacent G domain. The multi-domain coordination and management function unit (e.g. the multi-domain coordination and management function unit 121b) of each T node (e.g. the satellite flash terminal node T3) receives information through the basic service layer channel dedicated by the multi-domain coordination and management function unit to obtain detailed broadcast service information supported by G nodes of adjacent G domains. The broadcast service information supported by the G nodes of the adjacent G domain comprises at least one or one combination of the following information of the G nodes of the adjacent G domain: the method comprises the steps of broadcasting service list, broadcasting service name, broadcasting service AID, broadcasting service port number, broadcasting service sending period, broadcasting service QoS, broadcasting service starting time, frequency point of the broadcasting service and physical resource information sent by the broadcasting service.

Fig. 7 is a schematic diagram illustrating that a G node (e.g., the source flash management node G1) broadcasts a neighboring G node broadcast service message to an intra-domain T node (e.g., the flash terminal node T3) through a dedicated transmission control channel of a multi-domain coordination and management functional unit of a base service layer. The method mainly comprises a broadcast message sending process of a satellite flash basic service layer between a G node and a T node. Including a broadcast message: and the adjacent G node broadcasts a service information notification message. The sending direction is from the G node to all T nodes in the G domain.

Optionally, the multi-domain coordination and management function unit 121a of the basic service layer 120a of the source flash management node G1 may also instruct the access layer of the source flash management node G1 to send the broadcast service information indication of the neighboring cell through one-to-many broadcast on a common channel by using a broadcast system message, where the broadcast service information indication of the neighboring cell includes broadcast service information supported by G nodes in neighboring G domains. The broadcast service information indication of the neighboring cell specifically includes: g node identification (such as MAC ID layer two identification) of the adjacent G domain, and broadcast service information supported by G nodes of the adjacent G domain. The broadcast service information supported by the G nodes of the adjacent G domain comprises at least one or one combination of the following information of the G nodes of the adjacent G domain: the method comprises the steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time, a frequency point where the broadcast service is located and physical resource information sent by the broadcast service.

And the access layer of each T node (such as the satellite flash terminal node T3) receives the system message of the G node (such as the source satellite flash management node G1) on a physical layer common channel to obtain the broadcast service information indication of the neighboring cell. Then, the access layer of the T node (e.g. the star flash terminal node T3) forwards the obtained broadcast service information indication of the neighboring cell to a multi-domain coordination and management function unit of a basic service layer of the T node (e.g. the star flash terminal node T3). The content indicated by the broadcast service information of the neighboring cell may be referred to as a neighboring cell G node broadcast service information notification message.

Fig. 8 is a schematic diagram of G-domain internal sending broadcast service information indication of a neighboring cell based on an access stratum broadcast mode. Referring to fig. 8, in an embodiment, after the system message to be broadcast by the base application layer 130a of the source flash management node G1 reaches the multi-domain coordination and management function unit 121b of the base service layer 120a, the base service layer 120a is triggered to first establish a transport channel broadcast TCID (dynamically allocated), and notify the access layer 110a to also establish a corresponding logical channel (a 211). Subsequently, the base application layer 130a instructs the multi-domain coordination and management function 121b of the base service layer 120a to notify the access layer 110a to publish the system message (a 212). The access layer 121b of the satellite flash terminal node T3 receives the system message of the source satellite flash management node G1 through a physical layer common channel to obtain broadcast service information supported by the target satellite flash management node G2 of the adjacent G domain; the access layer 121b of the satellite flash terminal node T3 forwards the obtained broadcast service information supported by the target satellite flash management node G2 of the neighboring G domain to the multi-domain coordination and management function unit 121b of the basic service layer 120b of the satellite flash terminal node T3 (a 213).

Fig. 9 is a schematic diagram that a G node (for example, the source star flash management node G1) broadcasts, to an intra-domain T node (for example, the star flash terminal node T3), a broadcast service information indication of the neighboring cell through a system message through a star flash access layer. The G node satellite flash access layer broadcasts the broadcast service information indication (A22) of the neighboring cell to the T node in the domain through a system message. The content indicated by the broadcast service information of the neighboring cell may be referred to as a neighboring cell G node broadcast service information notification message. And the broadcast service information indication of the adjacent region comprises detailed broadcast service information supported by G nodes of adjacent G domains. The broadcast service information indication of the neighboring cell specifically includes: g node identification (such as MAC ID layer two identification) of the adjacent G domain, and broadcast service information supported by G nodes of the adjacent G domain. The specific content indicated by the broadcast service information of the neighboring cell is contained in a system message, and the system message not only contains the broadcast service information supported by the broadcast neighboring cell, but also indicates the physical resource, such as a time-frequency resource, in which the broadcast service information of the neighboring cell is located. The sending direction of the system message is from the G node to all T nodes in the G domain.

In addition, the G node notifies the broadcast service information of the neighbor cell of the T node in the G domain in addition to the broadcast-based manner, the broadcast service information may also be issued by the T node-based manner. Fig. 10 shows a flow of the indication of the broadcast service information of the neighboring cell based on the query sent by the T node. Fig. 10 shows a schematic diagram of sending broadcast service information indication of a neighboring cell based on a query manner inside the G domain.

The multi-domain coordination and management function unit 121b of the basic service layer 120b of the satellite flash terminal node T3 sends a neighbor broadcast service query request message to the multi-domain coordination and management function unit 121a of the basic service layer 120a of the source satellite flash management node G1 in the domain where the satellite flash terminal node T3 is located according to the requirement (a 23). The neighbor broadcast service query request message includes: g node identification (such as MAC ID layer two identification) of the adjacent G domain, and broadcast service information supported by the G node of the adjacent G domain. The G node ID of the adjacent G domain includes, for example, MAC ID layer two ID. The broadcast service information supported by the G node of the adjacent G domain includes at least one or one combination of the following information of the target flash management node G2: the method comprises the steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time, a frequency point of the broadcast service, and physical resource information sent by the broadcast service. The multi-domain coordination and management function unit 121a of the basic service layer 120a of the source satellite flash management node G1 receives the neighbor broadcast service query request message from the multi-domain coordination and management function unit 121b of the basic service layer 120b of the satellite flash terminal node T3 (a 23).

And the multi-domain coordination and management functional unit of the basic service layer of the G node sends a neighbor cell broadcast service query response message to the corresponding T node according to the broadcast service query request message of the T node. In this embodiment, the multi-domain coordination and management function unit 121a of the basic service layer 120a of the source satellite flash management node G1 sends a neighbor broadcast service query response message to the multi-domain coordination and management function unit 121b of the basic service layer 120b of the satellite flash terminal node T3 according to the neighbor broadcast service query request message of the satellite flash terminal node T3 (a 24). The multi-domain coordination and management function unit 121b of the base service layer 120b of the satellite flash terminal node T3 receives a broadcast service query response message in response to the broadcast service query request message from the multi-domain coordination and management function unit 121a of the base service layer 120a of the source satellite flash management node G1 (a 24). The broadcast service query response message includes: g node identification (such as MAC ID layer two identification) of the adjacent G domain, and broadcast service information supported by G nodes of the adjacent G domain. And the G node identification of the adjacent G domain comprises MAC ID layer two identification. The broadcast service information supported by the G nodes of the adjacent G domain comprises at least one or one combination of the following information of the G nodes of the adjacent G domain: the method comprises the steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time, a frequency point where the broadcast service is located and physical resource information sent by the broadcast service.

Fig. 11 is a schematic diagram illustrating that a G node performs neighboring G node broadcast service message indication to an intra-domain T node through a dedicated transmission control channel of a multi-domain coordination and management functional unit of a basic service layer of the G node. The message interaction process is mainly triggered based on the query request of the T node. The method mainly comprises the steps of sending and receiving messages of a multi-domain coordination and management functional unit of a satellite flash basic service layer between a G node and a T node. Which contains two messages: a neighbor broadcast service query request message (A231) and a neighbor broadcast service query response message (A241). The two messages are applicable to a management mode or a non-management mode, and the sending range is between the G node and the T node in the G domain.

Specific example 1: continuously receiving the broadcast service of the T node in a mobile scene (G node and T node interact through a multi-domain coordination management functional unit of a basic service layer):

fig. 12 is a schematic diagram illustrating a handover process of a T node moving from the source star flash management node G1 to the target star flash management node G2. The satellite flash terminal node T3 obtains broadcast service information supported by a neighboring G node (e.g., G2) (S001). For example, the satellite flash terminal node T3 obtains the broadcast service information supported by the source satellite flash management node G2 from the source satellite flash management node G1. The satellite flash terminal node T3 reports the target G node of intention switching to the source satellite flash management node G1 (S002). The source star flash management node G1 makes a handover decision according to the physical layer link transmission condition reported by the star flash terminal node T3 after measurement and the target G node information expected to move reported by the star flash terminal node T3 (S003). If the source star flash management node G1 decides to start a handover operation in the handover decision, a handover request message regarding the handover operation of the star flash terminal node T3 is initiated to the target star flash management node G2 (S004). After receiving the handover request message regarding the handover operation of the satellite flash terminal node T3 from the source satellite flash management node G1, the target satellite flash management node G2 of the target G domain performs access control on the handover request message of the satellite flash terminal node T3 (S005). If the target satellite flash management node G2 determines that the movement of the satellite flash terminal node T3 can be accessed, the target satellite flash management node G2 replies a handover request response message to the source satellite flash management node G1 (S006). After receiving the handover request response message, the source satellite flash management node G1 generates a handover command by using the content in the handover request response message, and sends the handover command to the satellite flash terminal node T3 (S007). The handover command includes the satellite flash terminal node T3 receiving the relevant information needed to move to the target satellite flash management node G2 from the source satellite flash management node G1. The star flash terminating node T3 performs an access procedure with the target star flash managing node G2 to establish a new connection (S008), and after completing the access procedure, replies a handover complete message to the target star flash managing node G2 (S009). The handover operation of fig. 12 may be performed by the multi-domain coordination and management function unit of the basic service layer in the star flash terminal node T3, the target star flash management node G1, and the target star flash management node G2, or performed by the handover management function unit. As will be illustrated separately below.

As shown in fig. 13, it is a mobility scenario diagram for the satellite flash terminal node T3 to move from the G domain of the source satellite flash management node G1 (represented by the source domain G01) to the G domain of the target satellite flash management node G2 (represented by the target domain G02). The source star flash management node G1 has star flash terminal nodes T1, T2 and T3 in its G domain. And a satellite flash terminal node T4 is arranged in the G domain of the target satellite flash management node G2. The satellite flash terminal node T3 receives broadcast service data in the G domain of the source satellite flash management node G1, and through the above "broadcast service information interaction between G domains" flow between G1 and G2 and the "broadcast service information indication of the neighboring cell in the G domain of G1 in the G domain of the source satellite flash management node G1" flow, the satellite flash terminal node T3 obtains the G domain of the target satellite flash management node G2 where the target satellite flash management node G2 is located and also supports the broadcast service received by the satellite flash terminal node T3 in the G domain of the source satellite flash management node G1. The following description focuses on the overall handover procedure of the satellite flash terminal node T3 moving from the G domain of the source satellite flash management node G1 to the G domain of the target satellite flash management node G2 while performing broadcast reception.

First step (handover preparation phase): the satellite flash terminal node T3 obtains information through a "broadcast service information indication of an adjacent cell in G domain" flow in G domain of the source satellite flash management node G1, and the G domain of the target satellite flash management node G2 where the target satellite flash management node G2 is also capable of supporting the broadcast service received by the satellite flash terminal node T3 in the G domain of the source satellite flash management node G1. The satellite flash terminal node T3 decides to move to the G domain of the target satellite flash management node G2 where the target satellite flash management node G2 is located according to its own requirements. And the satellite flash terminal node T3 reports the target G domain G02 which the satellite flash terminal node T desires to move to G1. As shown in particular in fig. 14. Fig. 14 shows a schematic diagram of a target G domain expecting to move reported by a T node to a G node. And the satellite flash terminal node T3 reports the target G node information expecting to move to the source satellite flash management node G1. And the source satellite flash management node G1 receives the target G node information which is expected to move and reported by the satellite flash terminal node T3. In an embodiment, the multi-domain coordination and management function unit 121B of the basic service layer 120B of the satellite flash terminal node T3 reports the target G node information expecting to move to the multi-domain coordination and management function unit 121a of the basic service layer 120a of the source satellite flash management node G1 (B01). The multi-domain coordination and management function unit 121a of the basic service layer 120a of the source satellite flash management node G1 receives the target G node information (B01) expecting to move, which is reported by the multi-domain coordination and management function unit 121B of the basic service layer 120B of the satellite flash terminal node T3. Specifically, the target G node information includes: g node identification (such as MAC ID layer two identification) of the G domain that the T node expects to move, and the reason for T node movement (such as the reason for movement of the star flash terminal node T3).

Second step (switching preparation stage): the star flash terminal node T3 reports, periodically or according to configuration, a physical layer link transmission condition (such as RSRP/RSRQ, etc.) of a G link (a transmission link between the source star flash management node G1 and the star flash terminal node T3) between the source star flash management node G1 and the star flash terminal node T3 to the source star flash management node G1; due to the movement of the satellite flash terminal node T3, the transmission quality of the G link between the source satellite flash management node G1 and the satellite flash terminal node T3 may be deteriorated. The source star flash management node G1 makes a handover decision according to the physical layer link transmission condition reported by the star flash terminal node T3 after measurement and the target G node information expected to move reported by the star flash terminal node T3. If the source star flash management node G1 decides to start a handover operation in the handover decision, a handover request message regarding the handover operation of the star flash terminal node T3 is initiated to the target star flash management node G2 (the handover request message is sent through the multi-domain coordination and management function unit 121c of the basic service layer 120c of the source star flash management node G1). The handover request message includes: a mobile T node identifier (such as MAC ID), broadcast service information being received by the star flash terminal node T3 in the G domain of the source star flash management node G1, capability information of the star flash terminal node T3, security algorithm information of the star flash terminal node T3 in the G domain of the source star flash management node G1, and mapping relationship information from a broadcast service port to a TCID, and the like. The broadcast service information being received by the satellite flash terminal node T3 in the G domain of the source satellite flash management node G1 includes at least one or a combination of the following information of the source satellite flash management node G1: the method comprises the following steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time and a frequency point of the broadcast service.

Third step (switching preparation stage): after receiving a handover request message about the handover operation of the satellite flash terminal node T3, the target satellite flash management node G2 in the target G domain performs access control on the handover request message of the satellite flash terminal node T3, and the target satellite flash management node G2 performs access control on the satellite flash terminal node T3 according to broadcast service information (acquired through the handover request message) being received by the satellite flash terminal node T3 and the current resource condition of the target satellite flash management node G2. If the target satellite flash management node G2 determines that the movement of the satellite flash terminal node T3 cannot be accessed, replying a handover rejection message to the source satellite flash management node G1. If the target star flash management node G2 determines that the movement of the star flash terminal node T3 can be accessed, it replies a handover request response message (which is sent through the multi-domain coordination and management function unit 121c of the basic service layer 120 c) to the source star flash management node G1 in response to the handover request message. The handover request response message includes: the target satellite flash management node G2 identifier, the target satellite flash management node G2 give the newly allocated node identifier of the satellite flash terminal node T3, the relevant information allowing the satellite flash terminal node T3 to access the target satellite flash management node G2, the broadcast service information currently supported by the target satellite flash management node G2, the mapping relationship information from the broadcast service port to the TCID, and the like. The target star flash management node G2 identity contains, for example, a MAC ID layer two identity. The node ID newly allocated by the target star flash management node G2 to the star flash terminating node T3 includes, for example, MAC ID layer two ID. The related information allowing the satellite flash terminal node T3 to access to the target satellite flash management node G2 includes at least one or a combination of the following information: a base service layer security algorithm used by the target satellite flash management node G2, an access resource of the G domain that the satellite flash terminal node T3 accesses to the target satellite flash management node G2, and a system message of the target satellite flash management node G2. The broadcast service information currently supported by the target satellite flash management node G2 includes at least one or a combination of the following information of the target satellite flash management node G2: the method comprises the following steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time and a frequency point of the broadcast service.

Fourth step (handover execution stage): after receiving the handover request response message of the target satellite flash management node G2 responding to the handover request message, the source satellite flash management node G1 sends the content in the handover request response message to the multi-domain coordination and management function unit 121b of the basic service layer 120b of the satellite flash terminal node T3 through the multi-domain coordination and management function unit 121a of the basic service layer 120a of the source satellite flash management node G1.

Fifth step (handover execution stage): after the satellite flash terminal node T3 receives the relevant information required to move to the target satellite flash management node G2 from the source satellite flash management node G1 (the satellite flash terminal node T3 obtains the relevant information through the multi-domain coordination and management function unit 121b of the basic service layer 120 b), the satellite flash terminal node T1 leaves from the G domain where the source satellite flash management node G1 is located, and disconnects the relevant connection with the source satellite flash management node G1, thereby establishing a new connection (including an access layer connection and a basic service layer connection) with the target satellite flash management node G2. The satellite flash terminal node T3 receives the relevant information required to move to the target satellite flash management node G2 from the source satellite flash management node G1, and then obtains the relevant information through the multi-domain coordination and management function unit 121b of the basic service layer 120b of the satellite flash terminal node T3.

Sixth step (handover completion stage): the satellite flash terminal node T3 replies a handover completion message to the target satellite flash management node G2 through the multi-domain coordination and management function unit 121b of its base service layer 120b, and completes the handover operation from the source satellite flash management node G1 to the target satellite flash management node G2. The star flash terminal node T3 then communicates with the target star flash management node G2 using the new identity (the new identity assigned by the target star flash management node G2 to the star flash terminal node T3).

Specific example 2: continuously receiving the T node broadcast service in a mobile scene (G node and T node interact through a switching management functional unit of a basic service layer):

as shown in fig. 13, it is a mobility scenario diagram for the satellite flash terminal node T3 to move from the G domain of the source satellite flash management node G1 (represented by the source domain G01) to the G domain of the target satellite flash management node G2 (represented by the target domain G02). The source star flash management node G1 has star flash terminal nodes T1, T2 and T3 in its G domain. And a satellite flash terminal node T4 is arranged in the G domain of the target satellite flash management node G2. The satellite flash terminal node T3 receives broadcast service data in the G domain of the source satellite flash management node G1, and through the flow of "broadcast service information interaction between G domains" between G1 and G2 and the flow of "broadcast service information indication of an adjacent cell in G domain" of the source satellite flash management node G1 in the G domain, the satellite flash terminal node T3 obtains that the G domain of the target satellite flash management node G2 where the target satellite flash management node G2 is located also supports the broadcast service received by the satellite flash terminal node T3 in the G domain of the source satellite flash management node G1. The following description focuses on the overall handover procedure of the satellite flash terminal node T3 moving from the G domain of the source satellite flash management node G1 to the G domain of the target satellite flash management node G2 while performing broadcast reception.

First step (handover preparation stage): the satellite flash terminal node T3 obtains information through a "broadcast service information indication of an adjacent cell in G domain" flow in G domain of the source satellite flash management node G1, and the G domain of the target satellite flash management node G2 where the target satellite flash management node G2 is also capable of supporting the broadcast service received by the satellite flash terminal node T3 in the G domain of the source satellite flash management node G1. The satellite flash terminal node T3 decides to move to the G domain of the target satellite flash management node G2 where the target satellite flash management node G2 is located according to its own requirements. And the satellite flash terminal node T3 reports the target G domain G02 which the satellite flash terminal node T desires to move to G1. As shown in detail in fig. 15. Fig. 15 shows a schematic diagram of a target G domain expecting to move reported by a T node to a G node. And the satellite flash terminal node T3 reports the target G node information expecting to move to the source satellite flash management node G1. And the source satellite flash management node G1 receives the target G node information which is expected to move and reported by the satellite flash terminal node T3. In one embodiment, the handover management function unit 122B of the basic service layer 120B of the satellite flash terminal node T3 reports the target G node information expected to move to the handover management function unit 122a of the basic service layer 120a of the source satellite flash management node G1 (B01 a). The handover management function unit 122a of the basic service layer 120a of the source flash management node G1 receives the target G node information (B01a) expecting to move, which is reported by the handover management function unit 122B of the basic service layer 120B of the flash terminal node T3. Specifically, the target G node information includes: g node identification (such as MAC ID layer two identification) of the G domain that the T node expects to move, and the reason for T node movement (such as the reason for movement of the star flash terminal node T3).

Second step (switching preparation stage): the star flash terminal node T3 reports, periodically or according to configuration, a physical layer link transmission condition (such as RSRP/RSRQ, etc.) of a G link (a transmission link between the source star flash management node G1 and the star flash terminal node T3) between the source star flash management node G1 and the star flash terminal node T3 to the source star flash management node G1; due to the movement of the satellite flash terminal node T3, the transmission quality of the G link between the source satellite flash management node G1 and the satellite flash terminal node T3 may be deteriorated. The source star flash management node G1 makes a handover decision according to the physical layer link transmission condition reported by the star flash terminal node T3 after measurement and the target G node information expected to move reported by the star flash terminal node T3. If the source star flash management node G1 decides to start a handover operation in the handover decision, a handover request message regarding the handover operation of the star flash terminal node T3 is initiated to the target star flash management node G2 (the handover request message is sent through the multi-domain coordination and management function unit 121c of the basic service layer 120 c). The handover request message includes: mobile T node identification (such as MAC ID), broadcast service information being received by the satellite flash terminal node T3 in the G domain of the source satellite flash management node G1, capability information of the satellite flash terminal node T3, security algorithm information of the G domain of the source satellite flash management node G1 by the satellite flash terminal node T3, mapping relationship information from a broadcast service flow port to a TCID, and the like. The broadcast service information being received by the satellite flash terminal node T3 in the G domain of the source satellite flash management node G1 includes at least one or a combination of the following information of the source satellite flash management node G1: the method comprises the following steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time and a frequency point of the broadcast service.

Fourth step (handover execution stage): after receiving the handover request response message of the target satellite flash management node G2 responding to the handover request message, the source satellite flash management node G1 sends the content in the handover request response message to the handover management function unit 122b of the basic service layer 120b of the satellite flash terminal node T3 through the handover management function unit 122a of the basic service layer 120a of the source satellite flash management node G1.

Fifth step (handover execution stage): after the satellite flash terminal node T3 receives the relevant information required to move to the target satellite flash management node G2 from the source satellite flash management node G1 (the satellite flash terminal node T3 obtains the relevant information through the handover management function unit 122b of the basic service layer 120 b), the satellite flash terminal node T3 leaves from the G domain where the source satellite flash management node G1 is located and disconnects the relevant connection with the source satellite flash management node G1, and then establishes a new connection (including an access layer connection and a basic service layer connection) with the target satellite flash management node G2. The satellite flash terminal node T3 receives the relevant information required for moving to the target satellite flash management node G2 from the source satellite flash management node G1, and then obtains the relevant information through the handover management function unit 122b of the basic service layer 120b of the satellite flash terminal node T3.

Sixth step (handover completion stage): the star flash terminal node T3 replies a handover completion message to the target star flash management node G2 through the multi-domain coordination and management function unit 121b or the handover management function unit 122b of the basic service layer 120b, and completes the handover operation from the source star flash management node G1 to the target star flash management node G2. The star flash terminal node T3 then communicates with the target star flash management node G2 using the new identity (the new identity assigned by the target star flash management node G2 to the star flash terminal node T3).

While the disclosure has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the disclosure is not to be limited to the disclosed embodiment, but is intended to cover various arrangements made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A handover method performed in a wireless communication device, the wireless communication device serving as a satellite flash terminal node, comprising:

after receiving the relevant information required by moving to the target satellite flash management node from the source satellite flash management node, the satellite flash terminal node leaves from a communication domain (G domain) where the source satellite flash management node is located, breaks the relevant connection with the source satellite flash management node, and establishes a new connection with the target satellite flash management node; and

2. The handover method according to claim 1, wherein a multi-domain coordination and management function unit of the basic service layer of the flash terminal node reports the target G node information expected to move to a multi-domain coordination and management function unit of the basic service layer of the source flash management node; or

And the switching management function unit of the basic service layer of the satellite flash terminal node reports the target G node information expecting to move to the switching management function unit of the basic service layer of the source satellite flash management node.

3. The handover method according to claim 2, wherein the target G node information includes a G node identifier of a G domain that the Star flash terminal node expects to move, and a reason for the movement of the Star flash terminal node.

4. The handover method according to claim 1, wherein an access layer of the flash terminal node receives a system message of the source flash management node via a physical layer common channel to obtain a broadcast service information indicator of a neighboring cell;

and the satellite flash terminal node access layer forwards the acquired broadcast service information indication of the adjacent cell to a multi-domain coordination and management function unit of a basic service layer of the satellite flash terminal node.

5. The handover method according to claim 4, wherein the indication of the broadcast service information of the neighboring cell specifically includes: g node identification of the adjacent G domain and broadcast service information supported by the G node of the adjacent G domain.

6. The handover method according to claim 5, wherein the broadcast service information supported by the G nodes of the adjacent G domain comprises at least one or a combination of the following information of the G nodes of the adjacent G domain: the method comprises the steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time, a frequency point where the broadcast service is located and physical resource information sent by the broadcast service.

7. The handover method according to claim 1, wherein the multi-domain coordination and management function unit of the basic service layer of the satellite flash terminal node sends a neighbor broadcast service query request message to the multi-domain coordination and management function unit of the basic service layer of the G node in the domain where the satellite flash terminal node is located according to a requirement;

and the satellite flash terminal node receives a broadcast service query response message responding to the broadcast service query request message from a multi-domain coordination and management functional unit of a basic service layer of the source satellite flash management node.

8. The handover method according to claim 7, wherein the neighbor cell broadcast service query request message includes at least one or a combination of the following information: g node identification of the adjacent G domain and broadcast service information supported by the G node of the adjacent G domain.

9. The handover method according to claim 8, wherein the broadcast service information supported by the G nodes of the neighboring G domain comprises at least one or a combination of the following information of the target flash management node: the method comprises the steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time, a frequency point where the broadcast service is located and physical resource information sent by the broadcast service.

10. The handover method according to claim 7, wherein the broadcasting the service inquiry response message comprises: g node identification of the adjacent G domain and broadcast service information supported by the G node of the adjacent G domain.

11. The handover method according to claim 10, wherein the broadcast service information supported by the G nodes of the neighboring G-domain comprises at least one or a combination of the following information for the G nodes of the neighboring G-domain: the method comprises the steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time, a frequency point where the broadcast service is located and physical resource information sent by the broadcast service.

12. The handover method according to claim 1, wherein the satellite flash terminal node communicates with the target satellite flash management node using a new identifier assigned to the satellite flash terminal node by the target satellite flash management node.

13. A wireless communications apparatus, comprising:

a processor configured to invoke and execute a computer program stored in memory to cause an apparatus in which the above method is installed to perform the above method of any one of claims 1 to 12.

14. A chip, comprising:

a processor configured to invoke and execute a computer program stored in memory to cause an apparatus in which the method of any of claims 1 to 12 is installed to perform.

15. A handover method performed in a wireless communication device as a source flash management node, the handover method comprising:

the source satellite flash management node makes a switching decision according to the physical layer link transmission condition reported by the satellite flash terminal node after measurement and the target G node information expected to move reported by the satellite flash terminal node; if the source satellite flash management node decides to start the switching operation in the switching decision, a switching request message about the switching operation of the satellite flash terminal node is sent to a target satellite flash management node; and

16. The handover method according to claim 15, wherein the multi-domain coordination and management function unit of the basic service layer of the source flash management node sends a broadcast service query request message to the multi-domain coordination and management function unit of the basic service layer of the target flash management node;

and after receiving the broadcast service query request message, the multi-domain coordination and management function unit of the basic service layer of the target satellite flash management node feeds back a broadcast service query response message to the multi-domain coordination and management function unit of the basic service layer of the source satellite flash management node.

17. The handover method according to claim 16, wherein the broadcast service query request message includes broadcast service information currently supported by the source flash management node and a broadcast service information feedback indication requesting the requested party.

18. The handover method according to claim 16, wherein the current broadcast service information supported by the source flash management node includes at least one or a combination of the following information of the source flash management node: the broadcast service list, the broadcast service name, the broadcast service AID, the broadcast service port number, the broadcast service sending period and the broadcast service QoS.

19. A wireless communications apparatus, comprising:

a processor configured to invoke and execute a computer program stored in memory to cause an apparatus in which the method of any of claims 15 to 18 is installed to perform.

20. A chip, comprising:

21. A handover method performed in a wireless communication device as a target flash management node, the handover method comprising:

the target satellite flash management node performs access control on the satellite flash terminal node according to the broadcast service information which is acquired through the switching request message and is being received by the satellite flash terminal node and the resource condition of the target satellite flash management node;

22. The handover method according to claim 21, wherein the handover request message comprises at least one or a combination of the following information: the method comprises the steps of mobile T node identification, broadcast service information which is being received by the satellite flash terminal node in a G domain of a source satellite flash management node, capability information of the satellite flash terminal node, safety algorithm information of the satellite flash terminal node in the G domain of the source satellite flash management node, and mapping relation information from a broadcast service flow port to a TCID.

23. The handover method according to claim 22, wherein the broadcast service information being received by the flash terminal node in the G domain of the source flash management node comprises at least one or a combination of the following information of the source flash management node: the method comprises the following steps of a broadcast service list, a broadcast service name, a broadcast service AID, a broadcast service port number, a broadcast service sending period, a broadcast service QoS, broadcast service starting time and a frequency point of the broadcast service.

24. The handover method according to claim 21, wherein the handover request response message comprises at least one or a combination of the following information: the target satellite flashing management node identification, the node identification newly distributed by the target satellite flashing management node to the satellite flashing terminal node, the related information allowing the satellite flashing terminal node to access the target satellite flashing management node, the broadcast service information currently supported by the target satellite flashing management node, and the mapping relation information from a broadcast service stream port to a TCID.

25. A wireless communications apparatus, comprising:

a processor configured to invoke and execute a computer program stored in memory to cause an apparatus in which the method of any of claims 21 to 24 is installed to perform.

26. A chip, comprising: