CN114449602B

CN114449602B - Switching method, storage medium and wireless communication device

Info

Publication number: CN114449602B
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: 2024-02-06
Anticipated expiration: 2042-01-27
Also published as: CN114449602A

Abstract

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

Description

Switching method, storage medium and wireless communication device

Technical Field

The present invention relates to the field of electronic technologies, and in particular, to a switching method, a storage medium, and a wireless communication device.

Background

Along with the development of communication technology, the demands of people on communication are continuously changed, 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 the 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 requirements, and a star flash new short-distance communication technology for providing the performance of a short-distance communication system is generated.

The novel short-range communication technology of the star flash alliance spark link is oriented to application scenes in the fields of intelligent automobiles, intelligent manufacturing, intelligent houses, intelligent terminals and the like, is a wireless short-range communication technology and is used for carrying data interaction of application scenes in the fields of intelligent automobiles, intelligent houses, intelligent terminals, intelligent manufacturing and the like. Generally, the star flash architecture is formed by connecting a single management node G node with a plurality of managed nodes T nodes, and together forming a communication domain to implement a specific communication function. For example, in an intelligent automobile scene, the automobile domain controller is used as a G node, and a plurality of vehicle-mounted terminals are used as T nodes, so that a communication domain of an intelligent cabin can be formed, and vehicle-mounted video and audio services can be provided for users. In the intelligent home environment, the intelligent large screen is used as a G node, and can be used as a T node with a plurality of sound equipment to form a communication domain, so that high-quality home audio-video service is provided for users. Under the intelligent manufacturing scene, each controller is used as a G node on a single production line of a factory, 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.

The star flash technology can support one-to-many data transmission, i.e. broadcasting, besides supporting one-to-one data transmission from node to node. Only the support of the broadcast service is considered in the current star flash 1.0 version, and the support of the broadcast service by the mobility scene is not considered.

Therefore, a new handoff method is needed to support a mobile star flash communication device.

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 performed in a wireless communication apparatus, where the wireless communication apparatus is a star flash terminal node, and includes:

the basic service layer of the star-flashing terminal node reports the information of the target G node expected to move to the basic service layer of the source star-flashing management node;

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

And the star flashover terminal node replies a switching completion message to the target star flashover management node through the basic service layer thereof, and completes the switching operation from the source star flashover management node to the target star flashover management node.

In a second aspect, an embodiment of the present invention provides a wireless communications apparatus comprising a processor configured to invoke and execute a computer program stored in a memory to cause a device in which the processor is installed to perform the method of the first aspect disclosed above.

In a third aspect, an embodiment of the present application provides a handover method performed in a wireless communication apparatus, where the wireless communication apparatus is used as a source star flash management node, and includes:

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

the source star flashover management node receives the physical layer link transmission condition of the transmission link between the source star flashover management node and the star flashover terminal node reported by the star flashover terminal node;

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

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

In a fourth aspect, an embodiment of the present invention provides a wireless communications apparatus comprising a processor configured to invoke and execute a computer program stored in a memory to cause a device in which the processor is installed to perform the method of the third aspect disclosed above.

In a fifth aspect, embodiments of the present application provide a handover method performed in a wireless communication apparatus, where the wireless communication apparatus is a target star flash management node, including:

after receiving a switching request message about switching operation of a star-flashing terminal node, the target star-flashing management node in a target G domain performs access control on the switching request message of the star-flashing terminal node;

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

If the target star flashover management node determines that the movement of the star flashover terminal node cannot be accessed, replying a switching rejection message to a source star flashover management node; and

And if the target star flashover management node determines that the star flashover terminal node can be accessed, replying a switching request response message to the source star flashover management node to respond to the switching request message.

In a sixth aspect, an embodiment of the present invention provides a wireless communication apparatus comprising a processor configured to invoke and execute a computer program stored in a memory to cause a device in which the processor is installed to perform the method of the fifth aspect of the disclosure.

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 disk, CD-ROM, optical storage, magnetic storage, read-only memory, programmable read-only memory, erasable programmable read-only memory (Erasable Programmable Read Only Memory, EPROM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read Only Memory, EEPROM), and flash memory.

The disclosed methods can 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 star flash terminal node receives a system message of a source star flash management node through a physical layer public channel to obtain a broadcasting service information indication of a neighboring cell. Or the star-flash terminal node sends a neighbor cell broadcast service query request message to obtain the broadcast service information indication of the neighbor cell. And after receiving the relevant information required by the star flashover terminal node to move to the target star flashover management node from the source star flashover management node, the star flashover terminal node leaves from the G domain where the source star flashover management node is located, breaks the relevant connection with the source star flashover management node, and establishes a new connection with the target star flashover management node. By the novel switching method provided by the invention, the star flash terminal node can finish the switching operation from the source star flash management node to the target star flash management node.

Drawings

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

Fig. 2 shows a schematic diagram of a device classification of star-flashing nodes into G-nodes and T-nodes.

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

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

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

Fig. 6 is a schematic diagram showing the interaction flow of two G-node broadcast service message cells (information element).

Fig. 7 is a schematic diagram showing a broadcast service information indication of a transmitting neighbor cell based on a basic service layer broadcast mode in the G domain.

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

Fig. 9 shows a schematic diagram of sending a broadcast service information indication of a neighbor cell based on an access layer system message broadcast mode inside a G domain.

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

Fig. 11 is a schematic diagram showing that a G node performs an indication of a neighbor G node broadcast service message through a dedicated transmission control channel.

Fig. 12 shows a schematic flow chart of a handoff process in which the T node moves from the source star flash management node G1 to the target star flash management node G2.

Fig. 13 shows a schematic diagram of a mobility scenario in which the star-flash terminal node T3 moves from the source domain G01 to the target domain G02.

Fig. 14 shows a schematic diagram of a T node reporting a target G domain that expects movement to a G node.

Fig. 15 shows a schematic diagram of a T node reporting a target G domain that expects movement to a G node.

Detailed Description

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

with the evolution of star flashover technology, as the next stage of star flashover 2.0 is developed, a mobility scene is an important application scene, and flexible movement of the T node under each G domain can be supported. In addition, in a mobility scenario, broadcast traffic is also a typical data traffic type. For broadcast reception of the T node in the mobile scenario, if the broadcast service transmission information of other G domains can be known in advance, the T node can be assisted in better selecting the target G domain to be moved, which is beneficial to continuity of the broadcast service of the T node. In this case, reasonable design of the interaction of broadcasting service information between the star-flash G-domains is required. The invention mainly provides a corresponding solution and a detailed design for a Handover operation (Handover) in a star flash wireless communication system.

Referring to fig. 1, the star flash wireless communication system is composed of a star 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 (called G node) and a terminal node (called T node) according to different implementation functions, wherein the G node provides services of access layers such as connection management, resource allocation, information security and the like for the T node covered by the G node. The star flash access layer 110 realizes transmission interaction of upper layer service data of the G node and the T node on an air interface.

Referring to fig. 2, the star flash node T3 includes 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 base layer 101b, and the base service layer 120b and the base application layer 130b form a star flash upper layer 102b. The star flash node G1 comprises a star flash access layer 110a, the basic service layer 120a and the basic 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 form a star flash upper layer 102a. The star flash node G2 comprises a star flash access layer 110c, the basic service layer 120c and the basic 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 form a star flash upper layer 102c.

Considering that traffic scenarios have differentiated transmission requirements for wireless short-range communications, the star flash access layer 110 currently provides two communication interfaces of SparkLink Basic (SLB) 111 (e.g., SLB 111a, SLB 111b, and SLB 111 c) and Sparklink Low Energy (SLE) 112 (e.g., SLE 112a, SLE 112b, and SLE 112 c) for the star flash upper layer 102. The SLB 111 uses multiple technologies such as ultrashort frame, multipoint synchronization, bidirectional authentication, fast interference coordination, bidirectional authentication encryption, cross-layer scheduling optimization, etc., to support service scenarios with transmission requirements such as low latency, high reliability, precise synchronization, high concurrency, high security, etc. SLE 112 adopts Polar channel coding to promote transmission reliability, reduces retransmission and saves power consumption, supports maximum 4MHz transmission bandwidth and maximum 8PSK modulation, supports 1-to-many reliable multicast, supports 4KHz short delay interaction and other characteristics, fully considers energy-saving factors while ensuring transmission efficiency as much as possible, and is used for bearing service scenes with low-power consumption requirements. The SLB 111 and SLE 112 provide different transport services for different service requirements, complement each other and continue smooth evolution according to service requirements.

The star flash technology can support one-to-many data transmission, i.e. broadcasting, besides supporting one-to-one data transmission from node to node. The existing star flash broadcasting scheme is to perform indifferent direct broadcasting after an end-to-end transmission channel is established from node to node.

Referring to fig. 2, in particular, a star flash node T3 may be regarded as a star flash terminal node (T node). The star flash node G1 may be a star flash management node (G node). The star flash node G2 may be referred to as a G node. In the following embodiments, the star flashnode T3 may be a mobile star flashterminal node, the star flashnode G1 may be a source star flashmanagement node, and the star flashnode G2 may be a target star flashmanagement node. It should be appreciated that such an embodiment is provided for illustration only and not for limitation, and that in various embodiments, other nodes other than the star flash node T3 may be used as a moving star flash terminal node, the star flash node G1 or other nodes may be used as a target star flash management node, and the star flash node G2 or other nodes may be used as a source star flash management node.

After the broadcast data of the basic application layer 130a of the star flash management node G1 reaches the basic service layer 120a, the basic service layer 120a is triggered to establish a transmission channel broadcast TCID (dynamically allocated) first, and the access layer 110a is notified to establish a corresponding logical channel. Subsequently, the base application layer 130a instructs the service discovery module of the base service layer 120a to inform the access layer 110a to issue broadcast service information and broadcast service data. For the star flash terminal node T3, the base application layer 130b instructs the service discovery module of the base service layer 120b to notify the access layer 110b to scan for the broadcast service on the physical resource, and the access layer 110b feeds back the scan result to the service discovery module. Subsequently, the basic service layer 120 of the star flash terminal node T3 starts to establish a transport channel identification (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 star flash management node G1.

Referring to fig. 3, a three-layer protocol stack transmission mapping relationship of the star flash node is shown in fig. 3. The technical terms herein and in fig. 3 are illustrated in table 1 below:

table 1

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

Referring to fig. 4, a communication system including star flash management nodes G1 and G2, and a plurality of star flash termination nodes (including star flash termination nodes T3 and T4) performs the disclosed method according to one embodiment of the present disclosure. Fig. 4 shows an illustrative, non-limiting, system that may include many more network communication entities. The star flash management node G1 may be an example of a star flash management node. Star flashterminal nodes T3 and T4 may be examples of star flashterminal nodes. Connections between components, between modules and module components, and between devices and device components are shown as lines and arrows in the figures. The star flash termination node T3 may include a processor 11a, a memory 12a, and a transceiver 13a. The star flash termination node T4 may include a processor 11b, a memory 12b, and a transceiver 13b. The star flash management node G1 may include a processor 21a, a memory 22a, and a transceiver 23a. The star flash management node G2 may include a processor 21b, a memory 22b, and a transceiver 23b. 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 the processors 11a, 11b, 21a and 21 b. Each of the memories 12a, 12b, 22a and 22b may store various programs and information to cause the connected processor to operate to store various programs and access information to perform the proposed functions, procedures and/or methods. Each of the transceivers 13a, 13b, 23a and 23b is operatively coupled to 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 star flash termination 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 application-specific integrated circuits (ASICs), other chipsets, logic circuits, 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 (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 embodiments are 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 it can be communicatively coupled to the processor via various means as is known in the art. A star flashnode may be a wireless communication device, such as a sensor, computer, mobile device, camera, or factory equipment having wireless communication capabilities. "service management unit", "connection management unit" and "data link layer management entity" are modules defined in the standard file of star flash.

In order for the star-flash communication system to support the continuous reception of broadcast services by the T node in the handover scenario, the T node needs to obtain the broadcast service information supported by the neighbor cell before the handover. Specifically, the method comprises two steps: and the G domains are used for broadcasting service information interaction and broadcasting service information indication of the adjacent cells inside the G domains. As shown in particular in fig. 5.

Referring to fig. 5, in one embodiment, the handover method includes a broadcast service information interaction between G domains (step A1) and a broadcast service information indication of a neighbor in the G domain (step A2).

Step A1: and G, broadcasting service information interaction between domains:

in order to support the broadcast service reception in the handover scenario, the interaction of related information between the two G-domains is required. 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 star flash management node G1 sends a broadcast service query request message (a 11) to the multi-domain coordination and management function unit 121c of the basic service layer 120c of the target star flash management node G2, where the broadcast service query request message includes the broadcast service information currently supported by the source star flash management node G1 and an indication of the broadcast service information required to be fed back by the requested party. The broadcast service information currently supported by the source star flash management node G1 includes at least one or a combination of the following information of the source star flash management node G1: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, and broadcast service QoS.

After receiving the broadcast service query request message, the multi-domain coordination and management function unit 121c of the basic service layer 120c of the target star flash management node G2 feeds back a broadcast service query response message (a 12) to the multi-domain coordination and management function unit 121a of the basic service layer 120a of the source star flash management node G1, where the broadcast service query response message includes the broadcast service information currently supported by the target star flash management node G2. The broadcasting service information currently supported by the target star flash management node G2 includes at least one or a combination of the following information of the target star flash management node G2: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service transmission physical resource information.

Fig. 6 is a schematic diagram showing the interaction flow of two G-node broadcast service message cells (information element). The method mainly comprises a cross-node interaction flow between two G nodes. Two messages are contained: broadcast service query request message and broadcast service query response message. The two messages are applicable to a management mode or a non-management mode, and the sending direction is G node to opposite G node.

Step A2: the broadcast service information of the neighbor cell in the G domain indicates:

after the G node (e.g. the source star flash management node G1) obtains the indication of the broadcast service information of the neighbor cell (e.g. the broadcast service information including the target star flash management node G2), the indication needs to be given 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 learn the broadcast service information of other G domains, so as to perform corresponding processing. The broadcast service information indication of the neighbor cell of the specific G node (for example, the source star flash management node G1) notifying the T node (for example, the star flash terminal node T3) in the G domain where the specific G node is located may be indicated in two ways: broadcast-based or query-based. The broadcast service information indication flow of the neighbor 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 star flash management node G1 sends the detailed broadcast service information supported by the G node of the adjacent G domain to the multi-domain coordination and management function units of the basic service layer of each T node in the domain where the source star flash management node G1 is located (for example, the multi-domain coordination and management function unit 121b of the basic service layer 120b of the star flash terminal node T3) one-to-one. The detailed broadcast service information supported by the G node of the adjacent G domain specifically includes: the G node identification of the adjacent G domain (such as the MAC ID layer II identification) and the broadcast service information supported by the G node of the adjacent G domain. The multi-domain coordination and management function unit (e.g., multi-domain coordination and management function unit 121 b) of each T node (e.g., star flash terminal node T3) obtains detailed broadcast service information supported by G nodes of adjacent G domains through the base service layer channel reception information dedicated to the multi-domain coordination and management function unit. The broadcast service information supported by the G-nodes of the adjacent G-domain includes at least one or a combination of the following information of the G-nodes of the adjacent G-domain: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service transmission physical resource information.

Fig. 7 is a schematic diagram of broadcasting service messages of neighboring G nodes to intra-domain T nodes (e.g., star-flash terminal node T3) by the G nodes (e.g., the source star-flash management node G1) through a multi-domain coordination and management function dedicated transmission control channel of the basic service layer. The method mainly comprises a star-flashing basic service layer broadcast message sending flow between a G node and a T node. The method comprises the following steps: the neighbor 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 star flash management node G1 may also instruct the access layer of the source star flash management node G1 to send, through a broadcast system message, a broadcast service information indication of a neighbor cell in a one-to-many broadcast manner on a common channel, where the broadcast service information indication of the neighbor cell includes broadcast service information supported by a G node of a neighboring G domain. The broadcasting service information indication of the adjacent cell specifically comprises: g node identification (such as MAC ID layer II identification) of the adjacent G domain, and broadcast service information supported by the G node of the adjacent G domain. The broadcast service information supported by the G-nodes of the adjacent G-domain includes at least one or a combination of the following information of the G-nodes of the adjacent G-domain: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service transmission physical resource information.

The access layer of each T node (for example, star flash terminal node T3) obtains the broadcast service information indication of the neighboring cell by receiving the system message of the G node (for example, the source star flash management node G1) on a physical layer common channel. Then, the access layer of the T node (for example, the star flash terminal node T3) instructs the obtained broadcast service information of the neighboring cell to the multi-domain coordination and management function unit of the basic service layer of the T node (for example, the star flash terminal node T3). The content indicated by the broadcast service information of the neighbor cell may be referred to as a neighbor cell G node broadcast service information notification message.

Fig. 8 is a schematic diagram of transmitting a broadcast service information indication of a neighbor cell based on an access stratum broadcast scheme inside a G domain. Referring to fig. 8, in one embodiment, after the system message to be broadcast by the base application layer 130a of the source star flash management node G1 reaches the multi-domain coordination and management function 121b of the base service layer 120a, the base service layer 120a is triggered to broadcast a TCID (dynamically allocated) by a transmission channel that is previously established, and the access layer 110a is notified 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 inform the access layer 110a to issue the system message (a 212). The access layer 110b of the star flash terminal node T3 receives the system message of the source star flash management node G1 through the physical layer common channel to obtain the broadcast service information supported by the target star flash management node G2 of the adjacent G domain; the access layer 110b of the star flash terminal node T3 forwards the obtained broadcast service information supported by the target star flash management node G2 of the adjacent G domain to the multi-domain coordination and management function 121b of the basic service layer 120b of the star flash terminal node T3 (a 213).

Fig. 9 is a schematic diagram showing that a G node (for example, the source star flash management node G1) broadcasts a broadcast service information indication of the neighbor cell to an intra-domain T node (for example, a star flash terminal node T3) through a star flash access layer. Mainly, the G node star flash access layer broadcasts the broadcasting service information indication (A22) of the neighbor cell to the intra-domain T node through a system message. The content indicated by the broadcast service information of the neighbor cell may be referred to as a neighbor cell G node broadcast service information notification message. The broadcast service information of the neighbor cell indicates detailed broadcast service information supported by a G node including a neighbor G domain. The broadcasting service information indication of the adjacent cell specifically comprises: g node identification (such as MAC ID layer II identification) of the adjacent G domain, and broadcast service information supported by the G node of the adjacent G domain. The specific content indicated by the broadcasting service information of the adjacent cell is contained in a system message, and the system message contains broadcasting service information supported by the broadcasting adjacent cell and also indicates physical resources, such as time-frequency resources and the like, where the broadcasting service information of the adjacent cell is located. The sending direction of the system message is G node to all T nodes in the G domain.

In addition, the G node informs the broadcasting service information of the neighbor cell of the T node in the G domain where the G node is located, and may also issue a query based on the T node, in addition to the broadcast-based manner. The broadcast service information indication flow of the neighbor cell based on the query sent by the T node is shown as a figure 10. Fig. 10 shows a schematic diagram of sending a broadcast service information indication of a neighboring cell based on a query inside a G domain.

The multi-domain coordination and management function unit 121b of the basic service layer 120b of the star 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 star flash management node G1 in the domain where the request message is located according to the requirement (a 23). The neighbor cell broadcast service query request message includes: the G node identification of the adjacent G domain (such as the MAC ID layer II identification) and the broadcast service information supported by the G node of the adjacent G domain. The G node identification of the adjacent G domain comprises, for example, a MAC ID layer two identification. The broadcast service information supported by the G node of the adjacent G domain includes at least one or a combination of the following information of the target star flash management node G2: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service physical resource information. The multi-domain coordination and management function 121a of the basic service layer 120a of the source star flash management node G1 receives the neighbor broadcast service query request message from the multi-domain coordination and management function 121b of the basic service layer 120b of the star 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 star-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 star-flash terminal node T3 according to the neighbor broadcast service query request message of the star-flash terminal node T3 (a 24). The multi-domain coordination and management function unit 121b of the basic service layer 120b of the star 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 basic service layer 120a of the star flash management node G1 (a 24). The broadcast service query response message includes: g node identification (such as MAC ID layer II identification) of the adjacent G domain, and broadcast service information supported by the G node of the adjacent G domain. The G node identification of the adjacent G domain comprises a MAC ID layer two identification. The broadcast service information supported by the G-nodes of the adjacent G-domain includes at least one or a combination of the following information of the G-nodes of the adjacent G-domain: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service transmission physical resource information.

Fig. 11 is a schematic diagram showing that a G node performs a neighbor 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 function unit of a basic service layer thereof. The message interaction flow is triggered mainly based on the query request of the T node. Mainly is the sending and receiving flow of the multi-domain coordination and management function unit message of the star-flashing basic service layer between the G node and the T node. Two messages are contained: a neighbor broadcast service query request message (a 231) and a neighbor broadcast service query response message (a 241). Two messages are applicable to either the management mode or the non-management mode, with the transmission range between the G node and the T node within the G domain.

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

fig. 12 is a schematic diagram of a handoff procedure of the T node from the source star flash management node G1 to the target star flash management node G2. The star-flash terminal node T3 acquires broadcast service information supported by a neighbor G node (e.g., G2) (S001). For example, the star flash terminal node T3 obtains the broadcast service information supported by the source star flash management node G2 from the source star flash management node G1. The star flash terminal node T3 reports the target G node for the intention switching to the source star flash management node G1 (S002). And the source star-flash management node G1 makes a switching 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 of expected movement reported by the star-flash terminal node T3 (S003). If the source star flash management node G1 decides to initiate 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 a handover request message regarding a handover operation of the star flashover terminal node T3 from the source star flashover management node G1, the target star flashover management node G2 of the target G domain performs access control on the handover request message of the star flashover terminal node T3 (S005). If the target star flash management node G2 determines that the movement of the star flash terminal node T3 can be accessed, the target star flash management node G2 replies a handover request response message to the source star flash management node G1 (S006). After receiving the handover request response message, the source star 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 star flash terminal node T3 (S007). The handover command includes the relevant information that the star flashover terminal node T3 receives from the source star flashover management node G1 to move to the target star flashover management node G2. The star flash terminal node T3 performs an access procedure with the target star flash management node G2 to establish a new connection (S008), and returns a handover complete message to the target star flash management node G2 after completing the access procedure (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 the handover management function unit. Each of which is illustrated below.

As shown in fig. 13, a mobility scenario is schematically illustrated in which the star flash terminal node T3 moves from the G domain (denoted by the source domain G01) of the source star flash management node G1 to the G domain (denoted by the target domain G02) of the target star flash management node G2. And the G domain of the source star flash management node G1 is provided with star flash terminal nodes T1, T2 and T3. And a star flash terminal node T4 is arranged in the G domain of the target star flash management node G2. The star flashover terminal node T3 receives broadcast service data in the G domain of the source star flashover management node G1, and the star flashover terminal node T3 obtains the broadcast service received by the star flashover terminal node T3 in the G domain of the source star flashover management node G1 by the above-mentioned "broadcast service information interaction between G domains" procedure of G1 and G2 and "broadcast service information indication of the neighbor cell in G domain" procedure of G1 in the G domain of the source star flashover management node G1, where the target star flashover management node G2 is located. The overall switching process of the star flash terminal node T3 from the G domain of the source star flash management node G1 to the G domain of the target star flash management node G2 for broadcast reception is described in the following.

First step (handover preparation phase): the star flashover terminal node T3 obtains information through the process of "broadcasting service information indication of the neighbor cell in the G domain" in the G domain of the source star flashover management node G1, and the G domain of the target star flashover management node G2 where the target star flashover management node G2 is located also supports broadcasting services received by the star flashover terminal node T3 in the G domain of the source star flashover management node G1. And the star-flash terminal node T3 decides to move to the G domain of the target star-flash management node G2 where the target star-flash management node G2 is located according to the self requirement. The star flash terminal node T3 reports the target G domain G02 that it desires to move to G1. As particularly shown in fig. 14. Fig. 14 shows a schematic diagram of a T node reporting a target G domain that expects movement to a G node. And the star flashover terminal node T3 reports the target G node information expected to move to the source star flashover management node G1. The source star flash management node G1 receives target G node information which is reported by the star flash terminal node T3 and is expected to move. In one embodiment, the multi-domain coordination and management function 121B of the basic service layer 120B of the star flash terminal node T3 reports the target G node information (B01) expected to move to the multi-domain coordination and management function 121a of the basic service layer 120a of the source star flash management node G1. The multi-domain coordination and management function unit 121a of the basic service layer 120a of the source star-flash management node G1 receives the target G node information (B01) of the expected movement reported by the multi-domain coordination and management function unit 121B of the basic service layer 120B of the star-flash terminal node T3. Specifically, the target G node information includes: the G node identification of the G domain in which the T node expects to move (e.g., MAC ID layer two identification), the cause of T node movement (e.g., the cause of movement of star flash terminal node T3), and the like.

Second step (handover preparation phase): the star flashover terminal node T3 reports the physical layer link transmission condition (such as RSRP/RSRQ, etc.) of a G link (a transmission link between the star flashover terminal node T3 and the source star flashover terminal node G1) between the source star flashover terminal node G1 and the star flashover terminal node T3 to the source star flashover terminal node G1 periodically or according to configuration; due to the movement of the star flashover terminal node T3, the transmission quality of the G link between the source star flashover management node G1 and the star flashover terminal node T3 may be deteriorated. And the source star-flash management node G1 makes a switching 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 which is reported by the star-flash terminal node T3 and is expected to move. If the source star flash management node G1 decides to initiate 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 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 (e.g. MAC ID), broadcast service information that the star flashover terminal node T3 is receiving in the G domain of the source star flashover management node G1, capability information of the star flashover terminal node T3, security algorithm information of the star flashover terminal node T3 in the G domain of the source star flashover management node G1, and mapping relation information of broadcast service stream port to TCID. The broadcast service information being received by the star flash terminal node T3 in the G domain of the source star flash management node G1 includes at least one or a combination of the following information of the source star flash management node G1: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, and frequency point where broadcast service is located.

Third step (handover preparation phase): after receiving a switching request message about switching operation of a star flash terminal node T3, the target star flash management node G2 in a target G domain performs access control on the switching request message of the star flash terminal node T3, where the target star flash management node G2 performs access control on the star flash terminal node T3 according to broadcasting service information (acquired through the switching request message) being received by the star flash terminal node T3 and a current resource condition of the target star flash management node G2. And if the target star flash management node G2 determines that the movement of the star flash terminal node T3 cannot be accessed, replying a switching rejection message to the source star 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, a handover request response message (the handover request response message is sent through the multi-domain coordination and management function unit 121c of the base service layer 120 c) is replied to the source star flash management node G1 in response to the handover request message. The handover request response message includes: the target star flashover management node G2 identifier, the node identifier newly allocated to the star flashover terminal node T3 by the target star flashover management node G2, related information allowing the star flashover terminal node T3 to access to the target star flashover management node G2, broadcast service information currently supported by the target star flashover management node G2, mapping relation information from a broadcast service stream port to a TCID, and the like. The target star flash management node G2 identifier includes, for example, a MAC ID layer two identifier. The node identifier newly allocated to the star flash management node T3 by the target star flash management node G2 includes, for example, a MAC ID layer two identifier. The related information allowing the star flash terminal node T3 to access the target star flash management node G2 includes at least one or a combination of the following information: the basic service layer security algorithm used by the target star flash management node G2, the access resource of the G domain of the target star flash management node G2 to which the star flash terminal node T3 is accessed, and the system message of the target star flash management node G2. The broadcasting service information currently supported by the target star flash management node G2 includes at least one or a combination of the following information of the target star flash management node G2: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, and frequency point where broadcast service is located.

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

Fifth step (switching execution phase): after receiving the relevant information required for moving to the target star flashover management node G2 from the source star flashover management node G1, the star flashover terminal node T3 leaves from the G domain where the source star flashover management node G1 is located and disconnects the relevant connection with the source star flashover management node G1 (the star flashover terminal node T3 is obtained by the multi-domain coordination and management function unit 121b of the basic service layer 120 b), and then establishes a new connection with the target star flashover management node G2 (including an access layer connection and a basic service layer connection). The star flashover terminal node T3 receives the related information required for moving to the target star flashover management node G2 from the source star flashover management node G1, and then obtains the related information through the multi-domain coordination and management function 121b of the basic service layer 120b of the star flashover terminal node T3.

Sixth step (handover complete phase): the star-flash terminal node T3 replies a handover complete message to the target star-flash management node G2 through the multi-domain coordination and management function unit 121b of the basic service layer 120b, so as to complete 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).

Specific example 2: continuously receiving T node broadcast service (interaction between G node and T node through switching management function unit of basic service layer) in mobile scene:

as shown in fig. 13, a mobility scenario is schematically illustrated in which the star flash terminal node T3 moves from the G domain (denoted by the source domain G01) of the source star flash management node G1 to the G domain (denoted by the target domain G02) of the target star flash management node G2. And the G domain of the source star flash management node G1 is provided with star flash terminal nodes T1, T2 and T3. And a star flash terminal node T4 is arranged in the G domain of the target star flash management node G2. The star flashover terminal node T3 receives broadcast service data in the G domain of the source star flashover management node G1, and the star flashover terminal node T3 obtains the broadcast service received by the star flashover terminal node T3 in the G domain of the source star flashover management node G1 by the above-mentioned flow of "broadcast service information interaction between G domains" between G1 and G2 and the flow of "broadcast service information indication of the source star flashover management node G1 in the G domain" of the source star flashover management node G1. The overall switching process of the star flash terminal node T3 from the G domain of the source star flash management node G1 to the G domain of the target star flash management node G2 for broadcast reception is described in the following.

First step (handover preparation phase): the star flashover terminal node T3 obtains information through the process of "broadcasting service information indication of the neighbor cell in the G domain" in the G domain of the source star flashover management node G1, and the G domain of the target star flashover management node G2 where the target star flashover management node G2 is located also supports broadcasting services received by the star flashover terminal node T3 in the G domain of the source star flashover management node G1. And the star-flash terminal node T3 decides to move to the G domain of the target star-flash management node G2 where the target star-flash management node G2 is located according to the self requirement. The star flash terminal node T3 reports the target G domain G02 that it desires to move to G1. As shown in particular in fig. 15. Fig. 15 shows a schematic diagram of a T node reporting a target G domain that expects movement to a G node. And the star flashover terminal node T3 reports the target G node information expected to move to the source star flashover management node G1. The source star flash management node G1 receives target G node information which is reported by the star flash terminal node T3 and is expected to move. In one embodiment, the handover management function unit 122B of the base service layer 120B of the star flash terminal node T3 reports the target G node information (B01 a) expected to move to the handover management function unit 122a of the base service layer 120a of the source star flash management node G1. The handover management function unit 122a of the base service layer 120a of the source star flash management node G1 receives the target G node information (B01 a) of the expected movement reported by the handover management function unit 122B of the base service layer 120B of the star flash terminal node T3. Specifically, the target G node information includes: the G node identification of the G domain in which the T node expects to move (e.g., MAC ID layer two identification), the cause of T node movement (e.g., the cause of movement of star flash terminal node T3), and the like.

Second step (handover preparation phase): the star flashover terminal node T3 reports the physical layer link transmission condition (such as RSRP/RSRQ, etc.) of a G link (a transmission link between the star flashover terminal node T3 and the source star flashover terminal node G1) between the source star flashover terminal node G1 and the star flashover terminal node T3 to the source star flashover terminal node G1 periodically or according to configuration; due to the movement of the star flashover terminal node T3, the transmission quality of the G link between the source star flashover management node G1 and the star flashover terminal node T3 may be deteriorated. And the source star-flash management node G1 makes a switching 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 which is reported by the star-flash terminal node T3 and is expected to move. If the source star flash management node G1 decides to initiate 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 121c of the basic service layer 120 c). The handover request message includes: a mobile T node identifier (e.g. MAC ID), broadcast service information that the star flashover terminal node T3 is receiving in the G domain of the source star flashover management node G1, capability information of the star flashover terminal node T3, security algorithm information of the star flashover terminal node T3 in the G domain of the source star flashover management node G1, and mapping relation information of broadcast service stream port to TCID. The broadcast service information being received by the star flash terminal node T3 in the G domain of the source star flash management node G1 includes at least one or a combination of the following information of the source star flash management node G1: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, and frequency point where broadcast service is located.

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

Fifth step (switching execution phase): after receiving the relevant information required for moving to the target star flashover management node G2 from the source star flashover management node G1, the star flashover terminal node T3 (obtained by the handover management function unit 122b of the base service layer 120 b) leaves from the G domain where the source star flashover management node G1 is located and disconnects the relevant connection with the source star flashover management node G1, so as to establish a new connection (including an access layer connection and a connection of the base service layer) with the target star flashover management node G2. The star flashover terminal node T3 receives the related information required to move to the target star flashover management node G2 from the source star flashover management node G1 and obtains the related information through the handover management function 122b of the basic service layer 120b of the star flashover terminal node T3.

Sixth step (handover complete phase): the star flash terminal node T3 replies a handover complete 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, so as to complete 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 present 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 present disclosure is not to be limited to the disclosed embodiment, but is intended to cover various arrangements included within the scope of the foregoing broadest interpretation of the appended claims.

Claims

1. A handover method performed in a wireless communication device, the wireless communication device being a star flash terminal node, comprising:

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

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

And the switching management functional unit of the basic service layer of the star-flashing terminal node reports the information of the target G node expected to move to the switching management functional unit of the basic service layer of the source star-flashing terminal node.

3. The handover method according to claim 2, wherein the target G node information includes a G node identification of a G domain in which the star-flash terminal node is expected to move, and a cause of the star-flash terminal node to move.

4. The handover method according to claim 1, wherein the access layer of the star-flash terminal node receives the system message of the source star-flash management node through a physical layer common channel to obtain the broadcast service information indication of the neighbor cell;

and the star-flashing terminal node access layer forwards the acquired broadcasting service information indication of the neighbor cell to a multi-domain coordination and management functional unit of a basic service layer of the star-flashing terminal node.

5. The handover method according to claim 4, wherein the broadcast service information indication of the neighbor 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 node of the neighboring G domain includes at least one or a combination of the following information of the G node of the neighboring G domain: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service transmission physical resource information.

7. The handover method according to claim 1, wherein the multi-domain coordination and management function unit of the basic service layer of the star-flash terminal node sends the 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 star-flash terminal node is located according to the requirement;

the star flashover terminal node receives a broadcast service query response message in response to the broadcast service query request message from a multi-domain coordination and management function unit of a basic service layer of the source star flashover management node.

8. The handover method according to claim 7, wherein the neighbor 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 node of the neighboring G domain includes at least one or a combination of the following information of the target star management node: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service transmission physical resource information.

10. The handover method of claim 7, wherein the broadcast service query 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 node of the neighboring G domain includes at least one or a combination of the following information of the G node of the neighboring G domain: broadcast service list, broadcast service name, broadcast service AID, broadcast service port number, broadcast service transmission period, broadcast service QoS, broadcast service start time, broadcast service frequency point, and broadcast service transmission physical resource information.

12. The method of switching according to claim 1, wherein the star point node communicates with the target star point node using a new identifier assigned to the star point node by the target star point node.

13. A wireless communications apparatus, comprising:

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

14. A chip, comprising: