CN108924886A

CN108924886A - Message method and device, the first centralized network element

Info

Publication number: CN108924886A
Application number: CN201710277046.1A
Authority: CN
Inventors: 刘壮; 高音; 黄河; 刘旸
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-04-25
Filing date: 2017-04-25
Publication date: 2018-11-30

Abstract

The present invention provides a kind of message method and devices, the first centralized network element；Wherein, this method includes：First centralized network element sends connection management message to terminal；Wherein, connection management message includes at least one of：It is used to indicate terminal and is switched to the switching command for belonging to the second distributed net element of the second centralized network element from the first distributed net element for belonging to the first centralized network element；It is used to indicate and increases terminal and belong to the first wireless heterogeneous networks reconfiguration message that the third distributed net element of third centralization network element is attached；It is used to indicate the second wireless heterogeneous networks reconfiguration message that connect of the 4th distributed net element deleted terminal with belong to the first centralization network element.Through the invention, solve the problems, such as how to realize the connection management between terminal and distributed net element node, so that the connection between terminal and distributed net element node is more flexible.

Description

Message method and device, the first centralized network element

Technical field

The present invention relates to the communications fields, in particular to a kind of message method and device, the first centralized network Member.

Background technique

The 5G network architecture has the flexibility of innovative and networking, the based process list of wireless access net side in 5G network First BBU is separated into centralized network element (Centralized Unit, abbreviation CU) and distributed net element (Distributed Unit, abbreviation DU) two functional entitys.Multiple distributed net elements are controlled by centralized network element, and cloud framework may be implemented Base band focuses on and provides service for the distal end distribution of user.Fig. 1 is centralized network element and distribution in the related technology The interface diagram of formula network element, as shown in Figure 1, the insensitive network function of time delay is placed in the network architecture of CU-DU separation In CU (centralized network element), the network function of delay sensitive is placed in DU (distributed net element), between CU and DU by it is ideal/or Non-ideal forward pass (Fronthaul) is transmitted and is connected, and realizes multipoint cooperative function, and can support separation or integration The flexible networking of website.

Fig. 2 is possible function division schematic diagram between centralized network element and distributed net element in the related technology, such as Fig. 2 It is shown, including following several divisions：

Option 1 (RRC/PDCP separation, similar 1A structure)：The function separation of this option is similar in dual link (DC) 1A structure.RRC is located within CU, and the functions such as PDCP, RLC, MAC, PHY and RF are respectively positioned on DU.I.e. entire UP is all located at DU.

Option2 (PDCP/RLC separation)：The function separation of this option is similar to the 3C structure in dual link (DC).RRC It is located within CU with PDCP, the functions such as RLC, MAC, PHY and RF are respectively positioned on DU.

Option 3 (RLC high level/low layer separation)：Bottom RLC (partial function of RLC), the part MAC, PHY and RF position Within DU, the functions such as PDCP and high level RLC (partial function of RLC) are respectively positioned on CU.

Option 4 (RLC-MAC separation)：The part MAC, PHY and RF is located within DU, the equal position of the functions such as PDCP and RLC In CU.

Option 5 (separation inside MAC)：Part MAC function (such as HARQ), PHY and the part RF are respectively positioned on DU, Qi Tashang Layer function is located at CU.

Option 6 (MAC-PHY separation)：The part MAC, PHY and RF is located within DU, the equal position of the functions such as PDCP and RLC In CU.

Option 7 (separation inside PHY)：Part MAC function (such as HARQ), PHY and the part RF are respectively positioned on DU, Qi Tashang Layer function is located at CU.

Option 8 (PHY-RF separation)：The part RF is located within DU, other upper-layer functionalities are respectively positioned on CU.

Under the framework that centralized network element and distributed net element separate, terminal and centralized network element node and distributed network There are no processes and method to support for the connection management of first node, so terminal and centralized network element node and distributed network The connection management of first node is current problem to be solved.

For above-mentioned technical problem in the related technology, currently no effective solution has been proposed.

Summary of the invention

The embodiment of the invention provides a kind of message method and devices, the first centralized network element, at least to solve phase The problem of connection management between terminal and distributed net element node how is realized in the technology of pass.

According to one embodiment of present invention, a kind of message method is provided, including:First centralized network element is to end End sends connection management message；Wherein, connection management message includes at least one of：Terminal is used to indicate from belonging to first First distributed net element of centralized network element is switched to the switching life for belonging to the second distributed net element of the second centralized network element It enables；It is used to indicate increase terminal and belongs to the first wireless money that the third distributed net element of third centralization network element is attached Source controls reconfiguration message；It is used to indicate and deletes terminal and connect with the 4th distributed net element for belonging to the first centralization network element Second wireless heterogeneous networks reconfiguration message.

Optionally, the first centralized network element and the second centralized network element are same or different, the first centralization network element and the Three centralized network elements are same or different.

Optionally, in the case where connection management message includes switching command, the first centralized network element is sent to terminal Before connection management message, method further includes：First centralized network element receives the survey that terminal reports by the first distributed net element Amount report；First centralized network member judges whether terminal needs to be switched to second point from the first distributed net element according to measurement report Cloth network element；Wherein, in the case where the judgment result is yes, the first centralized network element is sent out by the first distributed net element to terminal Send connection management message.

Optionally, in the case where the judgment result is yes, pass through the first distributed net element to end in the first centralized network element Before end sends connection management message, method further includes：First centralized network element sends switching to the second distributed net element and prepares Message；First centralized network element receives the second distributed net element by the second centralized network element and prepares message feedback according to switching Switching is ready to complete message.

Optionally, after the first centralized network element sends connection management message to terminal by the first distributed net element, Method further includes：First centralized network element by the second distributed net element receive that terminal sends be used to indicate terminal be completed from First distributed net element is switched to the handoff completion message of the second distributed net element；First centralized network element is to the first distributed network The information for the context resource for discharging terminal that the centralized network element of member forwarding second is sent.

Optionally, under the first centralized network element and the identical situation of the second centralization network element, in the first centralized network element Before the information of the context resource for discharging terminal sent to the centralized network element of the first distributed net element forwarding second, side Method further includes：First centralized network element receives the protocol Data Unit state report that terminal reports；First centralized network element passes through There is no the agreement of confirmation on the first distributed net element indicated in second distributed net element retransmission protocol data cell state report Data unit data.

Optionally, under the first centralized network element and the second different situation of centralized network element, in the first centralized network Before member receives terminal transmission handoff completion message by the second distributed net element, method further includes：First centralized network element will At least one of information is sent to the second centralized network element：Protocol data unit sequence number, the descending protocol number not confirmed According to cell data packet, the out-of-order uplink protocol Data Unit data packet received.

Optionally, the information in switching command including the second distributed net element and/or the information of the second centralized network element.

Optionally, in the case where connection management message includes the first wireless heterogeneous networks reconfiguration message, in the first collection Before Chinese style network element sends connection management message to terminal, method further includes：First centralized network element passes through the first distributed network Member receives the measurement report that terminal reports；First centralized network member judges whether terminal needs increase and third according to measurement report The connection of distributed net element；Wherein, in the case where the judgment result is yes, the first centralized network element passes through the first distributed net element Connection management message is sent to terminal.

Optionally, in the case where the judgment result is yes, pass through the first distributed net element to end in the first centralized network element Before end sends connection management message, method further includes：First centralized network element is sent to third distributed net element for requesting Increase the request message that terminal is connect with third distributed net element；First centralized network element is received by third centralization network element The response message that third distributed net element is fed back according to request message.

Optionally, after the first centralized network element sends connection management message to terminal by the first distributed net element, Method further includes：First centralized network element by third distributed net element receive that terminal sends be used to indicate terminal be completed with First wireless heterogeneous networks of third distributed net element connection, which reconfigure, completes message.

Optionally, in the case where connection management message includes the second wireless heterogeneous networks reconfiguration message, in the first collection After Chinese style network element sends connection management message to terminal, method further includes：First centralized network element receives the use that terminal is sent It has completed to delete the second wireless heterogeneous networks for connecting with the 4th distributed net element of terminal to reconfigure in instruction and has completed information；The One centralized network element sends the information for discharging the context resource of terminal to the 4th distributed net element.

Optionally, it is sent to the 4th distributed net element for discharging the terminal in the described first centralized network element Before the information of context resource, method further includes：At least one of information is sent to the 4th collection by the first centralized network element Chinese style network element：Protocol data unit sequence number, the descending protocol data unit data packet not confirmed, receive it is out-of-order upper Row protocol Data Unit data packet；Wherein, at least one distributed net element in the described 4th centralized network element and the terminal Establish connection.

Optionally, before the first centralized network element sends connection management message to terminal, method further includes：First concentrates Formula network element receives the deletion for requesting deletion terminal to connect with the 4th distributed net element that the 4th distributed net element is sent and asks Seek information；First centralized network element feeds back removal request response letter corresponding with removal request information to the 4th distributed net element Breath.

Optionally, before the first centralized network element sends connection management message to terminal, method further includes：First concentrates Formula network element sends the removal request letter for requesting deletion terminal to connect with the 4th distributed net element to the 4th distributed net element Breath；The removal request corresponding with removal request information that first centralized network element receives the 4th distributed net element feedback responds letter Breath.

According to one embodiment of present invention, a kind of message sending device is provided, is located in the first centralized network element, packet It includes：Sending module, for sending connection management message to terminal；Wherein, connection management message includes at least one of：For Instruction terminal is switched to from the first distributed net element for belonging to the described first centralized network element and belongs to the second centralized network element The second distributed net element switching command；It is used to indicate the third distribution for increasing terminal with belonging to third centralization network element The first wireless heterogeneous networks reconfiguration message that network element is attached；It is used to indicate and deletes terminal and belong to the first centralized network Second wireless heterogeneous networks reconfiguration message of the 4th distributed net element connection of member.

Optionally, device further includes：First receiving module, for including the case where switching command in connection management message Under, the measurement report that terminal reports is received by the first distributed net element；First judgment module, for being judged according to measurement report Whether terminal needs to be switched to the second distributed net element from the first distributed net element；Wherein, in the case where the judgment result is yes, Connection management message is sent to terminal by the first distributed net element.

Optionally, device further includes：Second receiving module, for including the first wireless heterogeneous networks in connection management message In the case where reconfiguration message, the measurement report that terminal reports is received by the first distributed net element；Second judgment module, is used for Judge whether terminal needs to increase the connection with third distributed net element according to measurement report；It wherein, is yes in judging result In the case of, connection management message is sent to terminal by the first distributed net element.

Optionally, device further includes：Third receiving module, for including the second wireless heterogeneous networks in connection management message In the case where reconfiguration message, receive terminal send be used to indicate completed delete terminal connect with the 4th distributed net element The second wireless heterogeneous networks reconfigure and complete information；Sending module is also used to send to the 4th distributed net element for discharging The information of the context resource of terminal.

According to one embodiment of present invention, the centralized network element of one kind first is provided, including：Processor was used for end End sends connection management message；Wherein, connection management message includes at least one of：Terminal is used to indicate from belonging to first First distributed net element of centralized network element is switched to the switching life for belonging to the second distributed net element of the second centralized network element It enables；It is used to indicate increase terminal and belongs to the first wireless money that the third distributed net element of third centralization network element is attached Source controls reconfiguration message；It is used to indicate and deletes terminal and connect with the 4th distributed net element for belonging to the first centralization network element Second wireless heterogeneous networks reconfiguration message；Memory is coupled with processor.

According to still another embodiment of the invention, a kind of storage medium is additionally provided, the storage medium includes storage Program, wherein execute method described in any of the above embodiments in described program operation.

According to still another embodiment of the invention, a kind of processor is additionally provided, the processor is used to run program, In, described program executes method described in any of the above embodiments when running.

Through the invention, connection management message is sent to terminal due to the first centralized network element；Wherein, connection management message Including at least one of：It is used to indicate terminal and is switched to ownership from the first distributed net element for belonging to the first centralized network element In the switching command of the second distributed net element of the second centralized network element；It is used to indicate and increases terminal and belong to third centralization The first wireless heterogeneous networks reconfiguration message that the third distributed net element of network element is attached；It is used to indicate and deletes terminal and return Belong to the second wireless heterogeneous networks reconfiguration message of the 4th distributed net element connection of the first centralized network element；So that terminal exists The connection management that may be implemented after connection management message between terminal and distributed net element is received, can solve and how to realize end The problem of holding the connection management between distributed net element node, so that the connection between terminal and distributed net element node is more Flexibly.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings：

Fig. 1 is the interface diagram of centralized network element and distributed net element in the related technology；

Fig. 2 is possible function division schematic diagram between centralized network element and distributed net element in the related technology；

Fig. 3 is the flow chart of message method according to an embodiment of the present invention；

Fig. 4 is the structural block diagram of message sending device according to an embodiment of the present invention；

Fig. 5 is the structural block diagram of the first centralized network element provided according to embodiments of the present invention；

Fig. 6 is the offer of preferred embodiment 1 according to the present invention in single connection, is belonging to the same CU (intra- CU the flow diagram switched between different DU (inter-DU) under)；

Fig. 7 is the offer of preferred embodiment 2 according to the present invention in single connection, is belonging to different CU (inter-CU) Different DU (inter-DU) between the flow diagram that switches；

Fig. 8 is terminal (intra-CU) increase by one in the case where belonging to the same CU that preferred embodiment 3 provides according to the present invention A DU connection completes terminal with two or more DU under the same CU and establishes the flow diagram that more DU are connected；

Fig. 9 is the terminal that preferred embodiment 4 provides according to the present invention and the multiple DU for belonging to (intra-CU) under same CU Under establish the customer service of multi-connection in the case where, delete the flow diagram of the wherein connection of some DU and terminal；

Figure 10 is the terminal that preferred embodiment 5 provides according to the present invention and the multiple DU for belonging to (intra-CU) under same CU Under establish the customer service of multi-connection in the case where, delete the flow diagram of wherein some DU connection；

Figure 11 is under the multi-connection DU for the intra-CU that preferred embodiment 6 provides according to the present invention, using increase DU connection The DU switching flow schematic diagram under intra-CU is completed with the process that DU is connected is deleted；

Figure 12 be according to the present invention preferred embodiment 7 provide between different CU using the increased process of DU connection come complete At the flow chart of multi-connection establishment process；

Figure 13 is the flow chart that a DU connection is deleted between different CU that preferred embodiment 8 provides according to the present invention；

Figure 14 is the flow chart that a DU connection is deleted between different CU that preferred embodiment 9 provides according to the present invention；

Figure 15 is that using between different CU for the offer of preferred embodiment 10 according to the present invention increases a DU connection and delete The flow diagram that terminal switches between DU is completed except the process of a DU connection.

Specific embodiment

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.

It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, " Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.

Embodiment 1

A kind of message method is provided in the present embodiment, and Fig. 3 is message sender according to an embodiment of the present invention The flow chart of method, as shown in figure 3, the process includes the following steps：

Step S302, the first centralized network element send connection management message to terminal；Wherein, connection management message include with It is at least one lower：It is used to indicate terminal and is switched to from the first distributed net element for belonging to the first centralized network element and belong to second The switching command of second distributed net element of centralized network element；It is used to indicate and increases terminal and belong to third centralization network element The first wireless heterogeneous networks reconfiguration message that third distributed net element is attached；It is used to indicate and deletes terminal and belong to the Second wireless heterogeneous networks reconfiguration message of the 4th distributed net element connection of one centralized network element；

Step S304, terminal execute operation corresponding with connection management message according to connection management message.

Through the above steps, connection management message is sent to terminal due to the first centralized network element；So that terminal is receiving The connection management between terminal and distributed net element may be implemented after to connection management message, can solve how to realize terminal with The problem of connection management between distributed net element node, so that the connection between terminal and distributed net element node is cleverer It is living.

It should be noted that above-mentioned steps S302 can be with individualism, it can also be in conjunction with above-mentioned steps S304, but not It is limited to this.

It should be noted that aforesaid operations can show as at least one of：Terminal is established using Random Access With the connection of the second distributed net element, terminal establishes the connection with third distributed net element using Random Access, and terminal is deleted Except the connection with the 4th distributed net element.

It should be noted that the method for the present embodiment can be applied to belong to multiple distributions of the same centralized network element Under the scene of formula network element, also it can be applied under the scene for belonging to multiple distributed net elements of different centralized network elements, because And the above-mentioned first centralized network element and the second centralized network element are same or different, the first centralized network element and third centralization Network element is same or different.

In one embodiment of the invention, in the case where above-mentioned connection management message includes switching command, need into Row switching flow, thus before above-mentioned steps S302, the above method can also include：First centralized network element passes through first point Cloth network element receives the measurement report that terminal reports；First centralized network member judges whether terminal needs from according to measurement report One distributed net element is switched to the second distributed net element；Wherein, in the case where the judgment result is yes, the first centralized network element is logical It crosses the first distributed net element and sends connection management message to terminal.

It should be noted that passing through the first distribution in the first centralized network element in the case where above-mentioned judging result, which is, is Before formula network element sends connection management message to terminal, the above method can also include：First centralized network element is distributed to second Formula network element sends switching and prepares message；First centralized network element by the second centralized network element receive the second distributed net element according to The switching that switching prepares message feedback is ready to complete message.

It should be noted that the above-mentioned first centralized network element can be with table to the second distributed net element transmission switching preparation message Now it is：First centralized network element directly sends switching preparation message to the second distributed net element or the first centralized network element is logical It crosses the second centralized network element and sends switching preparation message to the second distributed net element, but it is not limited to this.

It should be noted that after above-mentioned steps S302, the above method can also include：First centralized network element passes through Second distributed net element receives the terminal that is used to indicate that terminal is sent and is completed from the first distributed net element and is switched to the second distribution The handoff completion message of formula network element；The use that first centralized network element is sent to the centralized network element of the first distributed net element forwarding second In the information of the context resource of release terminal.

It should be noted that being concentrated under the first centralized network element and the identical situation of the second centralization network element first The information for the context resource for discharging terminal that formula network element is sent to the centralized network element of the first distributed net element forwarding second Before, the above method can also include：First centralized network element receives the protocol Data Unit state report that terminal reports；First Centralized network element passes through on the first distributed net element indicated in the second distributed net element retransmission protocol data cell state report The protocol Data Unit data not confirmed.

It should be noted that carrying the protocol data list of terminal successful reception in above-mentioned protocol Data Unit state report The protocol Data Unit packet sequence number that metadata packet number and terminal are unsuccessfully received, but it is not limited to this.It needs Illustrate, in the protocol Data Unit packet sequence number that above-mentioned terminal is unsuccessfully received and above-mentioned first distributed net element The protocol Data Unit data not confirmed are corresponding.

It should be noted that under the first centralized network element and the second different situation of centralized network element, in the first collection Before Chinese style network element receives terminal transmission handoff completion message by the second distributed net element, the above method can also include：The At least one of information is sent to the second centralized network element by one centralized network element：Protocol data unit sequence number does not have really The descending protocol data unit data packet recognized, the out-of-order uplink protocol Data Unit data packet received.

It should be noted that including the cell information where the second distributed net element in above-mentioned switching command.

It should be noted that under the above-mentioned first centralized network element and the identical situation of the second centralization network element, it is above-mentioned to cut The information including the above-mentioned second centralized network element can not had to by changing in order.

In one embodiment of the invention, it reconfigures and disappears including the first wireless heterogeneous networks in above-mentioned connection management message It in the case where breath, needs to carry out increase process, before above-mentioned steps S302, the above method can also include：First centralization Network element receives the measurement report that terminal reports by the first distributed net element；First centralized network member judges eventually according to measurement report Whether end needs to increase the connection with third distributed net element；Wherein, in the case where the judgment result is yes, the first centralized network Member sends connection management message to terminal by the first distributed net element.

It should be noted that in the case where the judgment result is yes, passing through the first distributed network in the first centralized network element Before member sends connection management message to terminal, the above method can also include：First centralized network element is to third distributed network Member sends the request message for requesting increase terminal to connect with third distributed net element；First centralized network element passes through third Centralized network element receives the response message that third distributed net element is fed back according to request message.

It should be noted that the first centralized network element sends above-mentioned request message to third distributed net element and can show For：First centralized network element directly sends above-mentioned request message to third distributed net element, alternatively, the first centralized network element passes through Third centralization network element sends above-mentioned request message to third distributed net element, and but it is not limited to this.

It should be noted that sending connection management message to terminal by the first distributed net element in the first centralized network element Later, the above method can also include：First centralized network element is used to refer to by what third distributed net element reception terminal was sent Show that terminal is completed the first wireless heterogeneous networks connecting with third distributed net element and reconfigures and completes message.

It should be noted that the company of establishing between terminal and multiple distributed net elements may be implemented by above-mentioned increase process It connects.

It in one embodiment of the invention, include the second wireless heterogeneous networks reconfiguration message in connection management message In the case of, it needs to carry out deletion process, after above-mentioned steps S302, the above method can also include：First centralized network element It receives being used to indicate for terminal transmission and has completed to delete the second wireless heterogeneous networks that terminal is connect with the 4th distributed net element It reconfigures and completes information；First centralized network element sends the letter for discharging the context resource of terminal to the 4th distributed net element Breath.

It should be noted that sending to the 4th distributed net element the context for discharging terminal in the first centralized network element Before the information of resource, the above method can also include：At least one of information is sent to the 4th by the first centralized network element Centralized network element：Protocol data unit sequence number, the descending protocol data unit data packet not confirmed, receive it is out-of-order Uplink protocol Data Unit data packet；Wherein, at least one distributed net element in the described 4th centralized network element and the end End establishes connection.

It should be noted that above-mentioned deletion process can be triggered by the 4th distributed net element, it can also be by the first centralization Network element triggering, but it is not limited to this.Thus, in one embodiment of the invention, before above-mentioned steps S302, above-mentioned side Method can also include：First centralized network element receives the request that is used for that the 4th distributed net element is sent and deletes terminal and the 4th distribution The removal request information of the connection of formula network element；First centralized network element is fed back and removal request information pair to the 4th distributed net element The removal request response message answered.In yet another embodiment of the present invention, before above-mentioned steps S302, the above method may be used also To include：First centralized network element sends the company for requesting deletion terminal and the 4th distributed net element to the 4th distributed net element The removal request information connect；First centralized network element receives the deleting corresponding with removal request information of the 4th distributed net element feedback Except request response message.

It should be noted that above-mentioned switching flow, increasing process and deleting process three to combine two-by-two, can also be with Triplicity, but it is not limited to this.

It should be noted that above-mentioned first distributed net element can be identical with above-mentioned 4th distributed net element, it can also not Together；Above-mentioned second distributed net element may be the same or different with above-mentioned third distributed net element；Above-mentioned third distributed network It is first to may be the same or different with above-mentioned 4th distributed net element；Above-mentioned second distributed net element and above-mentioned 4th distribution Network element may be the same or different；It is not limited to this.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but it is very much In the case of the former be more preferably embodiment.Based on this understanding, technical solution of the present invention is substantially in other words to existing The part that technology contributes can be embodied in the form of software products, which is stored in a storage In medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, calculate Machine, server or network equipment etc.) execute method described in each embodiment of the present invention.

Embodiment 2

A kind of message sending device is additionally provided in the present embodiment, and the device is real for realizing above-described embodiment and preferably Mode is applied, the descriptions that have already been made will not be repeated.As used below, the soft of predetermined function may be implemented in term " module " The combination of part and/or hardware.Although device described in following embodiment is preferably realized with software, hardware, or The realization of the combination of software and hardware is also that may and be contemplated.

Fig. 4 is the structural block diagram of message sending device according to an embodiment of the present invention, as shown in figure 4, the device includes：

Sending module 42, for sending connection management message to terminal；Wherein, connection management message include it is following at least it One：It is used to indicate terminal and is switched to from the first distributed net element for belonging to the described first centralized network element and belong to the second concentration The switching command of second distributed net element of formula network element；It is used to indicate the third for increasing terminal with belonging to third centralization network element The first wireless heterogeneous networks reconfiguration message that distributed net element is attached；It is used to indicate and deletes terminal and belong to the first collection Second wireless heterogeneous networks reconfiguration message of the 4th distributed net element connection of Chinese style network element.

By above-mentioned apparatus, since above-mentioned sending module 42 is by belonging to the first distributed network of the first centralized network element Member sends connection management message to terminal；So that terminal and distributed network may be implemented after receiving connection management message in terminal Connection management between member can solve the problem of how realizing the connection management between terminal and distributed net element node, make The connection obtained between terminal and distributed net element node is more flexible.

It should be noted that above-mentioned apparatus can be applied to belong to multiple distributed net elements of the same centralized network element Scene under, also can be applied under the scene for belonging to multiple distributed net elements of different centralized network elements, it is thus, above-mentioned First centralized network element and the second centralized network element are same or different, and the first centralized network element is identical as third centralization network element Or it is different.

It should be noted that the connection management between terminal and distributed net element may include at least one of：Terminal Connection with the second distributed net element is established using Random Access, terminal is established using Random Access to be distributed with third The connection of formula network element, the connection of terminal deletion and the 4th distributed net element.

It in one embodiment of the invention, is terminal using Random Access foundation and second in above-mentioned connection management In the case where the connection of distributed net element, above-mentioned apparatus can also include：First receiving module connects with above-mentioned sending module 42 It connects, for receiving the survey that terminal reports by the first distributed net element in the case where connection management message includes switching command Amount report；First judgment module is connect with above-mentioned first receiving module, for according to measurement report judge terminal whether need from First distributed net element is switched to the second distributed net element；Wherein, in the case where the judgment result is yes, pass through the first distribution Network element sends connection management message to terminal.

Prepare to disappear it should be noted that above-mentioned sending module 42 can be also used for sending to the second distributed net element switching Breath；Above-mentioned first receiving module can be also used for receiving the second distributed net element according to switching preparation by the second centralized network element The switching of message feedback is ready to complete message.

It should be noted that above-mentioned first receiving module, is also used to receive what terminal was sent by the second distributed net element It is used to indicate terminal and the handoff completion message for being switched to the second distributed net element from the first distributed net element is completed；Above-mentioned transmission Module 42 can be also used for the context for being used to discharge terminal for forwarding the second centralized network element to send to the first distributed net element The information of resource.

It should be noted that above-mentioned first connects under the first centralized network element and the identical situation of the second centralization network element Module is received, is also used to receive the protocol Data Unit state report that terminal reports；Above-mentioned apparatus further includes：Retransmission module, and it is upper The connection of the first receiving module is stated, for first by indicating in the second distributed net element retransmission protocol data cell state report There is no the protocol Data Unit data of confirmation on distributed net element.

It should be noted that carrying the protocol data list of terminal successful reception in above-mentioned protocol Data Unit state report The protocol Data Unit packet sequence number that metadata packet number and terminal are unsuccessfully received, but it is not limited to this.

It should be noted that under the first centralized network element and the second different situation of centralized network element, above-mentioned transmission Module 42 can be also used for at least one of information being sent to the second centralized network element：Protocol data unit sequence number does not have The out-of-order uplink protocol Data Unit data packet for having the descending protocol data unit data packet of confirmation, receiving.

In one embodiment of the invention, include terminal in above-mentioned connection management to establish and the using Random Access In the case where the connection of three distributed net elements, above-mentioned apparatus can also include：Second receiving module connects with above-mentioned sending module 42 It connects, for passing through the first distributed network in the case where connection management message includes the first wireless heterogeneous networks reconfiguration message Member receives the measurement report that terminal reports；Above-mentioned second judgment module is connect with above-mentioned second receiving module, for according to measurement Report judges whether terminal needs to increase the connection with third distributed net element；Wherein, in the case where the judgment result is yes, lead to It crosses the first distributed net element and sends connection management message to terminal.

It should be noted that in the case where the judgment result is yes, above-mentioned sending module 42 can be also used for third point Cloth network element sends the request message for requesting increase terminal to connect with third distributed net element；Above-mentioned second receives mould Block is also used to receive the response message that third distributed net element is fed back according to request message by third centralization network element.

It should be noted that above-mentioned second receiving module, is also used to receive what terminal was sent by third distributed net element It is used to indicate terminal and the first wireless heterogeneous networks connecting with third distributed net element are completed reconfigure and complete message.

In one embodiment of the invention, in the company that above-mentioned connection management includes terminal deletion and the 4th distributed net element In the case where connecing, above-mentioned apparatus further includes：Third receiving module is connect with above-mentioned sending module 42, for disappearing in connection management In the case that breath includes the second wireless heterogeneous networks reconfiguration message, receives being used to indicate for terminal transmission and completed to delete eventually It holds the second wireless heterogeneous networks connecting with the 4th distributed net element to reconfigure and completes information；Above-mentioned sending module 42, can be with For sending the information for discharging the context resource of terminal to the 4th distributed net element.

It should be noted that above-mentioned sending module 42 can be also used for at least one of information being sent to the 4th concentration Formula network element：Protocol data unit sequence number, the descending protocol data unit data packet not confirmed, the out-of-order uplink received Protocol Data Unit data packet；Wherein, at least one distributed net element in the described 4th centralized network element is built with the terminal Connection is stood.

In one embodiment of the invention, above-mentioned third receiving module is also used to receive the transmission of the 4th distributed net element Removal request information for requesting deletion terminal to connect with the 4th distributed net element；Above-mentioned sending module 42 can be also used for Removal request response message corresponding with removal request information is fed back to the 4th distributed net element.

In yet another embodiment of the present invention, above-mentioned sending module 42 can be also used for sending to the 4th distributed net element Removal request information for requesting deletion terminal to connect with the 4th distributed net element；Above-mentioned third receiving module is also used to connect Receive the removal request response message corresponding with removal request information of the 4th distributed net element feedback.

It should be noted that above-mentioned apparatus can be located in the first centralized network element, but it is not limited to this.

It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong Following manner realization is crossed, but not limited to this：Above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with any Combined form is located in different processors.

Embodiment 3

The embodiment of the invention also provides the centralized network element of one kind first, Fig. 5 is the provided according to embodiments of the present invention The structural block diagram of one centralized network element, as shown in figure 5, the first centralized network element includes：

Processor 52, for sending connection management message to terminal；Wherein, connection management message include it is following at least it One：It is used to indicate terminal and is switched to from the first distributed net element for belonging to the described first centralized network element and belong to the second concentration The switching command of second distributed net element of formula network element；It is used to indicate the third for increasing terminal with belonging to third centralization network element The first wireless heterogeneous networks reconfiguration message that distributed net element is attached；It is used to indicate and deletes terminal and belong to the first collection Second wireless heterogeneous networks reconfiguration message of the 4th distributed net element connection of Chinese style network element；

Memory 54 is coupled with above-mentioned processor 52.

By the above-mentioned first centralized network element, due to the first distributed net element by belonging to the first centralized network element to Terminal sends connection management message；So that terminal may be implemented after receiving connection management message terminal and distributed net element it Between connection management, can solve the problem of how realizing the connection management between terminal and distributed net element node so that eventually Connection between end and distributed net element node is more flexible.

It should be noted that the first centralized network element and the second centralized network element are same or different, the first centralized network Member is same or different with third centralization network element.

It in one embodiment of the invention, is terminal using Random Access foundation and second in above-mentioned connection management In the case where the connection of distributed net element, above-mentioned processor 52 can be also used in connection management message including the feelings of switching command Under condition, the measurement report that terminal reports is received by the first distributed net element；And according to measurement report judge terminal whether need The second distributed net element is switched to from the first distributed net element；Wherein, in the case where the judgment result is yes, pass through first point Cloth network element sends connection management message to terminal.

It should be noted that above-mentioned processor 52 can be also used for sending switching preparation message to the second distributed net element； And it receives the second distributed net element by the second centralized network element and is ready to complete according to the switching that switching prepares message feedback and disappear Breath.

It should be noted that above-mentioned processor 52 can be also used for receiving the use that terminal is sent by the second distributed net element The handoff completion message that the second distributed net element is switched to from the first distributed net element is completed in instruction terminal；And to first The information for the context resource for discharging terminal that the centralized network element of distributed net element forwarding second is sent.

It should be noted that under the first centralized network element and the identical situation of the second centralization network element, above-mentioned processor 52 can be also used for receiving the protocol Data Unit state report that terminal reports；And pass through the second distributed net element retransmission protocol There is no the protocol Data Unit data of confirmation on the first distributed net element indicated in data cell state report.

It should be noted that under the first centralized network element and the second different situation of centralized network element, above-mentioned processing Device 52 can be also used for at least one of information being sent to the second centralized network element：Protocol data unit sequence number does not have The descending protocol data unit data packet of confirmation, the out-of-order uplink protocol Data Unit data packet received.

In one embodiment of the invention, include terminal in above-mentioned connection management to establish and the using Random Access In the case where the connection of three distributed net elements, above-mentioned processor 52 can be also used in connection management message including the first wireless money In the case that source controls reconfiguration message, the measurement report that terminal reports is received by the first distributed net element；And according to survey Amount report judges whether terminal needs to increase the connection with third distributed net element；Wherein, in the case where the judgment result is yes, Connection management message is sent to terminal by the first distributed net element.

It should be noted that in the case where the judgment result is yes, above-mentioned processor 52 can be also used for being distributed to third Formula network element sends the request message for requesting increase terminal to connect with third distributed net element；And pass through third centralization Network element receives the response message that third distributed net element is fed back according to request message.

It should be noted that above-mentioned processor 52 can be also used for receiving the use that terminal is sent by third distributed net element It the first wireless heterogeneous networks connecting with third distributed net element is completed reconfigures in instruction terminal and complete message.

In one embodiment of the invention, in the company that above-mentioned connection management includes terminal deletion and the 4th distributed net element In the case where connecing, above-mentioned processor 52 can be also used in connection management message including the second wireless heterogeneous networks reconfiguration message In the case where, it receives being used to indicate for terminal transmission and has completed to delete terminal is connect with the 4th distributed net element second wirelessly Resources control, which reconfigures, completes information；And the letter of the context resource for discharging terminal sent to the 4th distributed net element Breath.

It should be noted that above-mentioned processor 52 can be also used for at least one of information being sent to the 4th centralization Network element：Protocol data unit sequence number, the descending protocol data unit data packet not confirmed, the out-of-order uplink association received Discuss data unit data packet；Wherein, at least one distributed net element in the described 4th centralized network element and the terminal are established Connection.

In one embodiment of the invention, above-mentioned processor 52 can be also used for receiving what the 4th distributed net element was sent Removal request information for requesting deletion terminal to connect with the 4th distributed net element；And it is fed back to the 4th distributed net element Removal request response message corresponding with removal request information.

In yet another embodiment of the present invention, above-mentioned processor 52 can be also used for sending to the 4th distributed net element and use The removal request information that terminal is connect with the 4th distributed net element is deleted in request；And receive the 4th distributed net element feedback Removal request response message corresponding with removal request information.

Embodiment 4

The embodiments of the present invention also provide a kind of storage medium, which includes the program of storage, wherein upper Equipment where control storage medium executes method described in any of the above embodiments when stating program operation.

Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only memory (Read- Only Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard The various media that can store program code such as disk, magnetic or disk.

The embodiments of the present invention also provide a kind of processor, the processor is for running program, wherein program operation Step in Shi Zhihang any of the above-described method.

Optionally, the specific example in the present embodiment can be with reference to described in above-described embodiment and optional embodiment Example, details are not described herein for the present embodiment.

For a better understanding of the present invention, the present invention is further explained below in conjunction with preferred embodiment.

Preferred embodiment 1

Fig. 6 is the offer of preferred embodiment 1 according to the present invention in single connection, is belonging to the same CU (intra- CU the flow diagram switched between different DU (inter-DU) under), as shown in fig. 6, process includes：

Step 601 is that UE passes through source DU to network side reporting measurement reports；

Step 602 is that CU decides whether to carry out the switching between DU；

Step 603 is that CU network element sends switching preparation message to target DU；

Step 604, which is target DU, is ready to complete message to CU feedback switching；

Step 605 is that CU passes through source DU to terminal user's transmission switching command (target where the target DU comprising switching Cell information)；

Step 606 is connection of the terminal using Random Access foundation on target DU；

Step 607 is that terminal (indicates to have completed in target DU by target DU to network side transmission handoff completion message On switching)；

Step 608 be UE actively trigger a PDU state report to network side (for option2 be triggering one PDCP State report is one RLC state report of triggering for OPTION3-1)；

Step 609 is that CU network element passes through unacknowledged PDU data on target DU network element retransmission source DU.

Step 610 be switching after the completion of CU to source DU send release terminal contexts message related to resources

Note：Optionally, CU can start local cache and new received lower line number in step 603,604 front and backs (it is forwarding PDCP PDU for option2, is forwarding RLC for option3-1 according to is forwarded to target DU in advance and being cached PDU), while the source side DU can continue to transmit.Optionally, in step 608, data feelings can also be sent according to caching by source DU The corresponding PDU state report of condition construction, which is directly reported to CU, (to be PDCP state report to option2, is RLC to option3-1 State report)；Optionally, if target DU has carried out caching described above in advance, target DU is having received step It, can be in step 609 by unacknowledged data on the direct retransmission source DU of target DU after 608 PDU state report.

It should be noted that this preferred embodiment is equivalent to the first centralized network element and the second centralization in above-described embodiment Switching flow when network element is identical, and the first centralized network element that above-mentioned CU is equivalent in above-described embodiment 1, above-mentioned source DU phase When the first distributed net element in above-described embodiment 1, above-mentioned purpose DU is equivalent to the second distributed network in above-described embodiment 1 Member.

Preferred embodiment 2

Fig. 7 is the offer of preferred embodiment 2 according to the present invention in single connection, is belonging to different CU (inter-CU) Different DU (inter-DU) between the flow diagram that switches, as shown in fig. 7, the process includes：

Step 701 is that UE passes through source DU to network side reporting measurement reports；

Step 702 is that source CU decides whether to carry out the switching between DU；

Step 703 is that source CU network element sends switching request message to target CU；

Step 704 is that target CU sends switching request message to target DU；

Step 705, which is target DU, is ready to complete message to target CU feedback switching；

Step 706, which is target CU, feeds back handover request ack message to source CU；

Step 707 is that source CU passes through source DU to terminal user's transmission switching command (mesh where the target DU comprising switching Mark cell information)；

Step 708 is that received PDCP packet sequence number can be transmitted to target CU node by source CU

Step 709 is source CU according to last received PDCP state report, and the downlink PDCP data packet not confirmed is opened Beginning is forwarded to target CU node, while the out-of-order uplink PDCP data packet received is transmitted to target CU node.

Step 710 is connection of the terminal using Random Access foundation on target DU；

Step 711 is that terminal (indicates to have completed in target DU by target DU to network side transmission handoff completion message On switching)；

Step 712 shows that terminal can carry out normal data transmission by the connection between target DU and target CU；

Step 713 shows to complete routing update between core net and CU；

Step 714 be switching after the completion of target CU to source CU send release terminal contexts message related to resources；

Step 715 is that switching completes opisthogenesis CU to source DU transmission release terminal contexts message related to resources.

It is concentrated it should be noted that this preferred embodiment is equivalent to the first centralized network element and second in above-described embodiment 1 Switching flow when formula network element is not identical, and the source CU of this preferred embodiment is equivalent to the first concentration in above-described embodiment 1 Formula network element, the second centralized network element that the purpose CU of this preferred embodiment is equivalent in above-described embodiment 1, this preferred embodiment Source DU is equivalent to the first distributed net element in above-described embodiment 1, and the purpose DU of this preferred embodiment is equivalent to above-described embodiment 1 In the second distributed net element.

Preferred embodiment 3

Fig. 8 is terminal (intra-CU) increase by one in the case where belonging to the same CU that preferred embodiment 3 provides according to the present invention A DU connection completes terminal with two or more DU under the same CU and establishes the flow diagram that more DU are connected, such as Fig. 8 institute Show, which includes：

Step 801 is that UE passes through source DU to network side reporting measurement reports；

Step 802 is that CU decides whether to carry out increasing a DU；

Step 803 is that CU sends DU increase request message to target DU；

Step 804 is that target DU sends DU increase request response to CU；

Step 805, which is CU by source DU to terminal user, to be sent RRC reconfiguration message (target where carrying target DU is small Area increases information)；

Step 806 is connection of the terminal using Random Access foundation on target DU；

Step 807 is that terminal (indicates to have completed in target by target DU to network side transmission RRC reconfiguration completion message Establishment of connection on DU)；

Step 808 shows UE while establishing the multi-connection with source DU and target DU while connection

Step 809 shows that terminal can carry out normal data transmission by the connection between target DU and CU；

Step 810 shows that terminal can carry out normal data transmission by the connection between source DU and CU.

It is concentrated it should be noted that this preferred embodiment is equivalent to the first centralized network element and third in above-described embodiment 1 Increase process when formula network element is identical, and the CU of this preferred embodiment is equivalent to the first centralized network in above-described embodiment 1 Member, the source DU of this preferred embodiment are equivalent to the first distributed net element in above-described embodiment 1, the purpose DU of this preferred embodiment The third distributed net element being equivalent in above-described embodiment 1.

Preferred embodiment 4

Fig. 9 is the terminal that preferred embodiment 4 provides according to the present invention and the multiple DU for belonging to (intra-CU) under same CU Under establish the customer service of multi-connection in the case where, the flow diagram of the wherein connection of some DU and terminal is deleted, at this In preferred embodiment, DU, which deletes process, trigger by CU, as shown in figure 9, in the preferred embodiment, UE establish and meanwhile with The multi-connection of DU1 and DU2, wherein as follows by the process of the deletion DU1 of CU triggering：

Step 901 CU sends DU removal request to DU1；

Step 902 DU1 is responded to CU feedback DU removal request；

Step 903 is that the lateral terminal user's transmission RRC reconfiguration message of network (delete by the Target cell where carrying target DU Except information)；

Step 904 is that terminal (indicates to have completed on DU1 by DU2 to network side transmission RRC reconfiguration completion message The release of connection)；

Step 905 be UE actively trigger a PDU state report to network side (for option2 be triggering one PDCP State report is one RLC state report of triggering for OPTION3-1)；

Step 906 is that CU network element passes through unacknowledged PDU data on DU2 network element re-transmission DU1；

Step 907 CU sends release terminal contexts message related to resources to DU1.

Note：Optionally, CU can start local cache and new received lower line number in step 901,902 front and backs (it is forwarding PDCP PDU for option2, is forwarding RLC for option3-1 according to is forwarded to target DU in advance and being cached PDU), while the source side DU can continue to transmit.Optionally, in step 905, data feelings can also be sent according to caching by source DU The corresponding PDU state report of condition construction, which is directly reported to CU, (to be PDCP state report to option2, is RLC to option3-1 State report)；Optionally, if target DU has carried out caching described above in advance, target DU is having received step It, can be in step 906 by unacknowledged data on the direct retransmission source DU of target DU after 905 PDU state report.

It should be noted that this preferred embodiment is equivalent to deleting by the first centralized network element triggering in above-described embodiment 1 Except the CU of process, and this preferred embodiment is equivalent to the first centralization network element in above-described embodiment 1, this preferred embodiment DU1 is equivalent to the 4th distributed net element in above-described embodiment 1.

Preferred embodiment 5

Figure 10 is the terminal that preferred embodiment 5 provides according to the present invention and the multiple DU for belonging to (intra-CU) under same CU Under establish the customer service of multi-connection in the case where, the flow diagram of wherein some DU connection is deleted, in this preferred implementation In example, DU, which deletes process, to be triggered by DU.

In the preferred embodiment, UE establish while and DU1 and DU2 multi-connection, wherein by DU trigger deletion The process of DU1 is as follows：

Step 1001 DU1 sends DU removal request to CU；

Step 1002 CU is responded to DU1 feedback DU removal request；

Step 1003 is that the lateral terminal user's transmission RRC reconfiguration message of network (delete by Target cell where carrying target DU Except information)；

Step 1004 is that terminal (indicates to have completed on DU1 by DU2 to network side transmission RRC reconfiguration completion message Connection release)；

Step 1005 be UE actively trigger a PDU state report to network side (for option2 be triggering one PDCP State report is one RLC state report of triggering for OPTION3-1)；

Step 1006 is that CU network element passes through unacknowledged PDU data on DU2 network element re-transmission DU1；

Step 1007 CU sends release terminal contexts message related to resources to DU1.

Note：Optionally, CU can start local cache and new received downlink in step 1001,1002 front and backs Data, which are forwarded to target DU in advance and are cached, (to be forwarding PDCP PDU for option2, is forwarding RLC for option3-1 PDU), while the source side DU can continue to transmit.Optionally, in step 1005, data can also be sent according to caching by source DU The corresponding PDU state report of situation construction, which is directly reported to CU, (to be PDCP state report to option2, is to option3-1 RLC state report)；Optionally, if target DU has carried out caching described above in advance, target DU is having received step It, can be in step 1006 by unacknowledged data on the direct retransmission source DU of target DU after rapid 1005 PDU state report.

It should be noted that this preferred embodiment is equivalent to deleting by the triggering of the 4th distributed net element in above-described embodiment 1 Except the CU of process, and this preferred embodiment is equivalent to the first centralization network element in above-described embodiment 1, this preferred embodiment DU1 is equivalent to the 4th distributed net element in above-described embodiment 1.

Preferred embodiment 6

Figure 11 is under the multi-connection DU for the intra-CU that preferred embodiment 6 provides according to the present invention, using increase DU connection The DU switching flow schematic diagram under intra-CU is completed with the process that DU is connected is deleted, as shown in figure 11, which includes：

Step 1101 is that UE passes through source DU to network side reporting measurement reports；

Step 1102 is that CU decides whether switch between DU；

Step 1103 is that CU sends DU increase request message to target DU；

Step 1104 is that target DU sends DU increase request response to CU；

Step 1105 is that CU passes through source DU to terminal user's transmission RRC reconfiguration message (target where carrying target DU Cell increases information)；

Step 1106 is connection of the terminal using Random Access foundation on target DU；

Step 1107 is that terminal (indicates to have completed in mesh by target DU to network side transmission RRC reconfiguration completion message Mark the establishment of connection on DU)；

Step 1108 shows that terminal is connected with source DU and target DU holding simultaneously at this time

Step 1109 CU sends DU removal request to source DU；

Step 1110 source DU is responded to CU feedback DU removal request；

Step 1111 is that the lateral terminal user of network sends the RRC reconfiguration message (Target cell where carrying target DU Delete information)；

Step 1112 is that terminal (indicates to have completed the company in source DU by sending RRC reconfiguration completion message to network side The release connect)；

Step 1113 be UE actively trigger a PDU state report to network side (for option2 be triggering one PDCP State report is one RLC state report of triggering for OPTION3-1)；

Step 1114 is that CU network element passes through unacknowledged PDU data on target DU retransmission source DU；

Step 1115 CU sends release terminal contexts message related to resources to source DU.

Note：Optionally, CU can start local cache and new received downlink in step 1109,1110 front and backs Data, which are forwarded to target DU in advance and are cached, (to be forwarding PDCP PDU for option2, is forwarding RLC for option3-1 PDU), while the source side DU can continue to transmit.Optionally, in step 1114, data can also be sent according to caching by source DU The corresponding PDU state report of situation construction, which is directly reported to CU, (to be PDCP state report to option2, is to option3-1 RLC state report)；Optionally, if target DU has carried out caching described above in advance, target DU is having received step It, can be in step 1114 by unacknowledged data on the direct retransmission source DU of target DU after rapid 1113 PDU state report.

It should be noted that this preferred embodiment is the first centralized network element and third centralized network in above-described embodiment 1 The member scheme that above-mentioned increase process and deletion process combine when identical.

Preferred embodiment 7

Figure 12 be according to the present invention preferred embodiment 7 provide between different CU using the increased process of DU connection come complete At the flow chart of multi-connection establishment process, as shown in figure 12, which includes：

Step 1201 is that UE passes through source DU to network side reporting measurement reports；

Step 1202 is that source CU decides whether to carry out increasing a DU；

Step 1203 is that source CU sends DU increase request message to target CU；

Step 1204 is that target CU sends DU increase request message to target DU；

Step 1205 is that target DU sends DU increase request response to target CU；

Step 1206 is that target CU sends DU increase request response to source CU；

Step 1207 is that CU passes through source DU to terminal user's transmission RRC reconfiguration message (target where carrying target DU Cell increases information)；

Step 1208 is connection of the terminal using Random Access foundation on target DU；

Step 1209 is that terminal (indicates to have completed in mesh by target DU to network side transmission RRC reconfiguration completion message Mark the establishment of connection on DU)；

Step 1210 shows UE while establishing the multi-connection with source DU and target DU while connection；

Step 1211 shows to carry out routing update between core net and CU network element

Step 1212 shows that terminal can carry out normal data transmission by the connection between target DU and target CU；

Step 1213 shows that terminal can carry out normal data transmission by the connection between source DU and source CU.

It is concentrated it should be noted that this preferred embodiment is equivalent to the first centralized network element and third in above-described embodiment 1 Increase process when formula network element is not identical, and the source CU of this preferred embodiment is equivalent to the first concentration in above-described embodiment 1 Formula network element, the purpose CU of this preferred embodiment are equivalent to the third centralization network element in above-described embodiment 1, this preferred embodiment Source DU is equivalent to the first distributed net element in above-described embodiment 1, and the purpose DU of this preferred embodiment is equivalent to above-described embodiment 1 In third distributed net element.

Preferred embodiment 8

Figure 13 is the flow chart that a DU connection is deleted between different CU that preferred embodiment 8 provides according to the present invention, The process is triggered by DU.

In the preferred embodiment, UE establish while and DU1 and DU2 multi-connection, wherein DU1 belongs to CU1, DU2 Belong to CU2, wherein as follows by the process of the deletion DU1 of DU triggering：

Step 1301 DU1 sends DU removal request to CU1；

Step 1302 CU1 is responded to DU1 feedback DU removal request；

Step 1303 is that the lateral terminal user of network sends the RRC reconfiguration message (Target cell where carrying target DU Delete information)；

Step 1304 is that terminal (indicates to have completed on DU1 by DU2 to network side transmission RRC reconfiguration completion message Connection release)；

Step 1305 is optionally that received PDCP packet sequence number can be transmitted to CU2 node by CU1

Step 1306 is optionally that CU1 is according to last received PDCP state report, the downlink PDCP number that will do not confirm Start to be forwarded to CU2 node according to packet, while the out-of-order uplink PDCP data packet received is transmitted to CU2 node.

Step 1307, which is CU2, sends release UE connection context resource message to CU1

Step 1308, which is CU1, sends release UE connection context resource message to DU1

The optional core net of step 1309 and CU routing update are (when any one DU is unconnected under UE and CU1 Execute this step).

Note：When the business that UE is carried on the DU1 of deletion on other DU belonged under CU1 while not carrying out multi-connection Division carries, then 1305,1306 steps are executed, the DU that otherwise data of deleted DU1 are carried by divisions other under CU1 To continue to transmit.

It should be noted that this preferred embodiment is equivalent to deleting by the triggering of the 4th distributed net element in above-described embodiment 1 Except the first centralized network element that the CU1 of process, and this preferred embodiment is equivalent in above-described embodiment 1, this preferred embodiment DU1 be equivalent to the 4th distributed net element in above-described embodiment 1.

Preferred embodiment 9

Figure 14 is the flow chart that a DU connection is deleted between different CU that preferred embodiment 9 provides according to the present invention, The process is triggered by CU.

In the preferred embodiment, UE establish while and DU1 and DU2 multi-connection, wherein DU1 belongs to CU1, DU2 Belong to CU2, wherein as follows by the process of the deletion DU1 of CU triggering：

Step 1401 CU1 sends DU removal request to DU1；

Step 1402 DU1 is responded to CU1 feedback DU removal request；

Step 1403 is that the lateral terminal user of network sends the RRC reconfiguration message (Target cell where carrying target DU Delete information)；

Step 1404 is that terminal (indicates to have completed on DU1 by DU2 to network side transmission RRC reconfiguration completion message Connection release)；

Step 1405 is optionally that received PDCP packet sequence number can be transmitted to CU2 node by CU1；

Step 1406 is optionally that CU1 is according to last received PDCP state report, the downlink PDCP number that will do not confirm Start to be forwarded to CU2 node according to packet, while the out-of-order uplink PDCP data packet received is transmitted to CU2 node；

Step 1407, which is CU2, sends release UE connection context resource message to CU1；

Step 1408, which is CU1, sends release UE connection context resource message to DU1；

The optional core net of step 1409 and CU routing update are (when any one DU is unconnected under UE and CU1 Execute this step).

Note：When the business that UE is carried on the DU1 of deletion on other DU belonged under CU1 while not carrying out multi-connection Division carries, then 1405,1406 steps are executed, the DU that otherwise data of deleted DU1 are carried by divisions other under CU1 To continue to transmit

It should be noted that this preferred embodiment is equivalent to deleting by the first centralized network element triggering in above-described embodiment 1 Except the first centralized network element that the CU1 of process, and this preferred embodiment is equivalent in above-described embodiment 1, this preferred embodiment DU1 be equivalent to the 4th distributed net element in above-described embodiment 1.

Preferred embodiment 10

Figure 15 is that using between different CU for the offer of preferred embodiment 10 according to the present invention increases a DU connection and delete The flow diagram that terminal switches between DU is completed except the process of a DU connection, as shown in figure 15, which includes：

Step 1501 is that UE passes through source DU to network side reporting measurement reports；

Step 1502 is that source CU decides whether switch between DU；

Step 1503 is that source CU sends DU increase request message to target CU；

Step 1504 is that target CU sends DU increase request message to target DU；

Step 1505 is that target DU sends DU increase request response to target CU；

Step 1506 is that target CU sends DU increase request response to source CU；

Step 1507 is that CU passes through source DU to terminal user's transmission RRC reconfiguration message (target where carrying target DU Cell increases information)；

Step 1508 is connection of the terminal using Random Access foundation on target DU；

Step 1509 is that terminal (indicates to have completed in mesh by target DU to network side transmission RRC reconfiguration completion message Mark the establishment of connection on DU)；

Step 1510 shows that terminal is connected with source DU and target DU holding simultaneously at this time；

Step 1511 source CU sends DU removal request to source DU；

Step 1512 source DU is responded to source CU feedback DU removal request；

Step 1513 is optionally that received PDCP packet sequence number can be transmitted to target CU node by source CU；

Step 1514 is optionally that source CU is according to last received PDCP state report, the downlink PDCP that will do not confirm Data packet starts to be forwarded to target CU node, while the out-of-order uplink PDCP data packet received is transmitted to target CU section Point；

Step 1515, which is source CU, sends release UE connection context resource message to source DU；

The optional core net of step 1516 and CU routing update are (when any one DU is unconnected under UE and source CU Execute this step).

Note：When the business that UE is carried on the source DU of deletion not on other DU belonged under the CU of source while carrying out connect more Division carrying is connect, then executing 1513,1514 steps, otherwise the data of deleted source DU are by division carryings other under the CU of source DU continue to transmit.

It should be noted that this preferred embodiment is equivalent to embodiment of the above-mentioned increase process in conjunction with deletion process.

Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.It is all within principle of the invention, it is made it is any modification, etc. With replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of message method, which is characterized in that including：

First centralized network element sends connection management message to terminal；Wherein, the connection management message include it is following at least it One：

It is used to indicate the terminal and is switched to from the first distributed net element for belonging to the described first centralized network element and belong to the The switching command of second distributed net element of two centralized network elements；

It is used to indicate the increase terminal is attached with the third distributed net element for belonging to third centralization network element first Wireless heterogeneous networks reconfiguration message；

It is used to indicate second for deleting the terminal and connecting with the 4th distributed net element for belonging to the first centralization network element Wireless heterogeneous networks reconfiguration message.

2. the method according to claim 1, wherein the described first centralized network element and second centralized network Member is same or different, and the described first centralized network element and the third centralization network element are same or different.

3. according to the method described in claim 2, it is characterized in that, including the switching command in the connection management message In the case of, before the described first centralized network element sends the connection management message to the terminal, the method also includes：

Described first centralized network element receives the measurement report that the terminal reports by first distributed net element；

The first centralized network member judges whether the terminal needs to cut from the first distributed net element according to the measurement report Change to second distributed net element；Wherein, in the case where the judgment result is yes, the described first centralized network element passes through described First distributed net element sends the connection management message to the terminal.

4. according to the method described in claim 3, it is characterized in that, in the case where the judging result, which is, is, described the Before one centralized network element sends the connection management message to the terminal by first distributed net element, the method Further include：Described first centralized network element sends switching to second distributed net element and prepares message；

Described first centralized network element receives second distributed net element by the described second centralized network element and cuts according to The switching for changing preparation message feedback is ready to complete message.

5. according to the method described in claim 3, it is characterized in that, being distributed in the described first centralized network element by described first After formula network element sends the connection management message to the terminal, the method also includes：

The first centralized network element is used to indicate the end by what second distributed net element received the terminal transmission The handoff completion message that second distributed net element is switched to from first distributed net element is completed in end；

The first centralized network element forward that the described second centralized network element sends to first distributed net element for releasing Put the information of the context resource of the terminal.

6. according to the method described in claim 5, it is characterized in that, in the described first centralized network element and second centralization In the identical situation of network element, second centralized network is forwarded to first distributed net element in the described first centralized network element Before the information for the context resource for discharging the terminal that member is sent, the method also includes：

Described first centralized network element receives the protocol Data Unit state report that the terminal reports；

Described first centralized network element retransmits the protocol Data Unit state report middle finger by second distributed net element There is no the protocol Data Unit data of confirmation on first distributed net element shown.

7. according to the method described in claim 5, it is characterized in that, in the described first centralized network element and second centralization In the different situation of network element, the terminal is received by second distributed net element in the described first centralized network element and is sent Before the handoff completion message, the method also includes：

At least one of information is sent to the second centralized network element by the described first centralized network element：Protocol Data Unit sequence Number, the descending protocol data unit data packet that does not confirm, the out-of-order uplink protocol Data Unit data packet received.

8. the method according to any one of claim 3 to 7, which is characterized in that include described the in the switching command The information of the information of two distributed net elements and/or the second centralized network element.

9. according to the method described in claim 2, it is characterized in that, including the described first wireless money in the connection management message In the case that source controls reconfiguration message, the described first centralized network element to the terminal send the connection management message it Before, the method also includes：

The first centralized network member judges whether the terminal needs to increase according to the measurement report and is distributed with the third The connection of formula network element；Wherein, in the case where the judgment result is yes, the described first centralized network element is distributed by described first Network element sends the connection management message to the terminal.

10. according to the method described in claim 9, it is characterized in that, in the case where the judging result, which is, is, described the Before one centralized network element sends the connection management message to the terminal by first distributed net element, the method Further include：

Described first centralized network element is sent to the third distributed net element for requesting to increase the terminal and the third The request message of the connection of distributed net element；

Described first centralized network element receives the third distributed net element by the third centralization network element asks according to Seek the response message of message feedback.

11. according to the method described in claim 9, it is characterized in that, passing through described first point in the described first centralized network element After cloth network element sends the connection management message to the terminal, the method also includes：

The first centralized network element is used to indicate the end by what the third distributed net element received the terminal transmission End, which is completed the first wireless heterogeneous networks connecting with the third distributed net element and reconfigures, completes message.

12. according to the method described in claim 2, it is characterized in that, including described second wireless in the connection management message In the case where resources control reconfiguration message, the connection management message is sent to the terminal in the described first centralized network element Later, the method also includes：

What the first centralized network element received that the terminal sends, which be used to indicate, has completed to delete the terminal and described the Second wireless heterogeneous networks of four distributed net elements connection, which reconfigure, completes information；

Described first centralized network element sends the context resource for discharging the terminal to the 4th distributed net element Information.

13. according to the method for claim 12, which is characterized in that be distributed in the described first centralized network element to the described 4th Before formula network element sends the information of the context resource for discharging the terminal, the method also includes：

At least one of information is sent to the 4th centralized network element by the described first centralized network element：Protocol Data Unit sequence Number, the descending protocol data unit data packet that does not confirm, the out-of-order uplink protocol Data Unit data packet received；Its In, at least one distributed net element in the described 4th centralized network element is established with the terminal to be connect.

14. method according to claim 12 or 13, which is characterized in that in the described first centralized network element to the terminal Before sending the connection management message, the method also includes：

First centralized network element receives the request that is used for that the 4th distributed net element is sent and deletes the terminal and the described 4th The removal request information of the connection of distributed net element；

Described first centralized network element, which feeds back deletion corresponding with the removal request information to the 4th distributed net element, asks Seek response message.

15. method according to claim 12 or 13, which is characterized in that in the described first centralized network element to the terminal Before sending the connection management message, the method also includes：

Described first centralized network element is sent to the 4th distributed net element for requesting to delete the terminal and the described 4th The removal request information of the connection of distributed net element；

Described first centralized network element receives the deleting corresponding with the removal request information of the 4th distributed net element feedback Except request response message.

16. a kind of message sending device, which is characterized in that it is located in the first centralized network element, including：

Sending module, for sending connection management message to terminal；Wherein, the connection management message include it is following at least it One：

17. device according to claim 16, which is characterized in that the described first centralized network element and second centralization Network element is same or different, and the described first centralized network element and the third centralization network element are same or different.

18. device according to claim 17, which is characterized in that described device further includes：

First receiving module, for passing through described first in the case where the connection management message includes the switching command Distributed net element receives the measurement report that the terminal reports；

First judgment module, for judging whether the terminal needs to switch from the first distributed net element according to the measurement report To second distributed net element；Wherein, in the case where the judgment result is yes, the connection management is sent to the terminal to disappear Breath.

19. device according to claim 17, which is characterized in that described device further includes：

Second receiving module, for including the feelings of the first wireless heterogeneous networks reconfiguration message in the connection management message Under condition, the measurement report that the terminal reports is received by first distributed net element；

Second judgment module, it is distributed with the third for judging whether the terminal needs to increase according to the measurement report The connection of network element；Wherein, in the case where the judgment result is yes, institute is sent to the terminal by first distributed net element State connection management message.

20. device according to claim 17, which is characterized in that described device further includes：Third receiving module is used for In the case that the connection management message includes the second wireless heterogeneous networks reconfiguration message, receive what the terminal was sent It is used to indicate and has completed to delete the second wireless heterogeneous networks that the terminal is connect with the 4th distributed net element and reconfigure Complete information；

The sending module is also used to send the context resource for discharging the terminal to the 4th distributed net element Information.

21. the centralized network element of one kind first, which is characterized in that including：

Processor, for sending connection management message to terminal；Wherein, the connection management message includes at least one of： It is used to indicate the terminal and is switched to from the first distributed net element for belonging to the described first centralized network element and belong to the second collection The switching command of second distributed net element of Chinese style network element；It is used to indicate and increases the terminal and belong to third centralization network element The first wireless heterogeneous networks reconfiguration message for being attached of third distributed net element；It is used to indicate and deletes the terminal and return Belong to the second wireless heterogeneous networks reconfiguration message of the 4th distributed net element connection of the described first centralized network element；

Memory is coupled with the processor.

22. the first centralized network element according to claim 21, which is characterized in that the described first centralized network element with it is described Second centralized network element is same or different, and the described first centralized network element is identical as the third centralization network element or not Together.

23. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein run in described program When perform claim require any one of 1 to 15 described in method.

24. a kind of processor, which is characterized in that the processor is for running program, wherein right of execution when described program is run Benefit require any one of 1 to 15 described in method.