CN107872848B

CN107872848B - Handover processing method, FC-MAC entity and C-RLC entity

Info

Publication number: CN107872848B
Application number: CN201610852222.5A
Authority: CN
Inventors: 孙军帅; 王莹莹; 陈锋; 黄学艳; 崔春风; 陈卓
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2020-10-23
Anticipated expiration: 2036-09-26
Also published as: CN107872848A

Abstract

The invention discloses a switching processing method, a fast control medium access control (FC-MAC) entity and a central radio link control (C-RLC) entity, wherein the method comprises the following steps: the FC-MAC entity acquires a switching instruction for the terminal equipment; the FC-MAC entity generates switching indication information aiming at least one central radio link control (C-RLC) entity or generates switching indication information aiming at a C-RLC entity and a distributed radio link control (D-RLC) entity according to the switching instruction aiming at the terminal equipment; and the FC-MAC entity sends the switching indication information to a C-RLC entity or to the C-RLC entity and a D-RLC entity.

Description

Handover processing method, FC-MAC entity and C-RLC entity

Technical Field

The present invention relates to handover management technology in the field of communications, and in particular, to a handover processing method, a fast control medium access control (FC-MAC) entity, and a central radio link control (C-RLC) entity.

Background

The network resource management mode in the traditional network taking the cell as the unit is a simple and effective network resource management method proved by practice. Therefore, the new architecture of the 5G protocol stack taking the 'user as the center' completes the design of the new architecture aiming at the 5G scene and the requirement on the basis of inheriting the advantages of the traditional network. In the protocol stack scheme of the 5G network with the user as the center, the UE becomes one of the basic elements of the protocol stack which is equal to the cell. The UE applies for various radio resources to the cell as required, and the cell provides appropriate radio resources according to the application of the UE (the cell applied for radio resources by the UE each time is not necessarily completely satisfied, so the cell needs to provide appropriate radio resources). The allocation and release method of the radio resources ensures that a data link (RB/Logicchannel) of the UE does not change with the change of the radio resources, and specifically, macroscopically, when the radio resources change due to the movement of the UE, the data link of the UE is kept unchanged, thereby avoiding a handover process.

However, the conventional network architecture and processing method cannot guarantee reduction of the time delay in the handover process, and therefore cannot guarantee handover efficiency.

Disclosure of Invention

In view of the above, the present invention provides a handover processing method, an FC-MAC entity and a C-RLC entity, which can solve at least the above problems in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the embodiment of the invention provides a switching processing method, which comprises the following steps:

the FC-MAC entity acquires a switching instruction for the terminal equipment;

the FC-MAC entity generates switching indication information aiming at least one C-RLC entity or generates switching indication information aiming at the C-RLC entity and the D-RLC entity according to the switching instruction aiming at the terminal equipment;

and the FC-MAC entity sends the switching indication information to a C-RLC entity or to the C-RLC entity and a D-RLC entity.

C-RLC entity receives switching indication information sent by FC-MAC entity;

and the C-RLC entity performs switching processing aiming at the terminal equipment according to the switching indication information sent by the FC-MAC entity.

An embodiment of the present invention provides an FC-MAC entity, including:

the instruction acquisition unit is used for acquiring a switching instruction for the terminal equipment;

the instruction generating unit is used for generating switching instruction information aiming at least one C-RLC entity or generating switching instruction information aiming at the C-RLC entity and the D-RLC entity according to the switching instruction aiming at the terminal equipment;

and the instruction sending unit is used for sending the switching indication information to the C-RLC entity or the C-RLC entity and the D-RLC entity.

The embodiment of the invention provides a C-RLC entity, which comprises:

a receiving unit, configured to receive handover indication information sent by an FC-MAC entity;

and the processing unit is used for carrying out switching processing aiming at the terminal equipment according to the switching indication information sent by the FC-MAC entity.

The embodiment of the invention provides a switching processing method, an FC-MAC entity and a C-RLC entity, wherein the FC-MAC entity generates switching indication information aiming at least one stage of RLC entity according to a switching instruction aiming at a middle terminal device, and then at least sends the switching indication information to the at least one stage of RLC entity; the RLC entities may include a C-RLC entity and a D-RLC entity. Thus, aiming at the problems caused by frequent switching in the 5G network, the processing for controlling the switching is reduced to the MAC layer and the RLC layer for switching processing, so that the switching time delay can be reduced, the robustness of a link can be ensured, and seamless switching can be realized.

Drawings

Fig. 1 is a first flowchart illustrating a handover processing method according to an embodiment of the present invention;

FIG. 2 is a system architecture between a 5G cell and a UE;

FIG. 3 is a diagram illustrating a structure between an MAC entity and an RLC entity according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating an RLC structure according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating an FC-MAC entity controlling a multi-level RLC entity according to an embodiment of the present invention;

FIG. 6 is a block diagram of a plurality of FC-MAC entities according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a handover process performed at a base station side and a UE side according to an embodiment of the present invention;

FIG. 8 is a flowchart illustrating a second method of handover processing according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating a processing flow among C-RLC, D-RLC and FC-MAC entities according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a FC-MAC entity structure according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a real-time C-RLC entity structure according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The first embodiment,

An embodiment of the present invention provides a handover processing method, which is applied to a MAC entity for fast controlling MAC, and as shown in fig. 1, the method includes:

step 101: the FC-MAC entity acquires a switching instruction for the terminal equipment;

step 102: the FC-MAC entity generates switching indication information aiming at least one C-RLC entity or generates switching indication information aiming at the C-RLC entity and the D-RLC entity according to the switching instruction aiming at the terminal equipment;

step 103: and the FC-MAC entity sends the switching indication information to a C-RLC entity or to the C-RLC entity and a D-RLC entity.

First, an application scenario of the present embodiment is described below, and the present embodiment can be applied to a mobile communication network side, and is particularly applicable to a 5G network. Referring to fig. 2, in a protocol stack scheme of a 5G network with "user as the center", for example, a User Equipment (UE) becomes one of basic elements of a protocol stack equal to a cell. The UE applies for various radio resources to the cell as required, and the cell provides appropriate radio resources according to the application of the UE (the cell applied for radio resources by the UE each time is not necessarily completely satisfied, so the cell needs to provide appropriate radio resources). The allocation and release method of radio resources ensures that the data link (RB/logical channel) of the UE does not change with the change of radio resources, and specifically, macroscopically, when the radio resources change due to the movement of the UE, the data link of the UE is kept unchanged, thereby avoiding the handover process.

Further, the present embodiment is particularly suitable for the multi-level MAC scheme and the multi-level RLC scheme in the "user-centric" protocol stack scheme for the 5G network. The multi-level MAC scheme and the multi-level RLC scheme may divide the MAC protocol entity function into two functional entities, FC-MAC and RT-MAC, as shown in fig. 3. FC-MAC is responsible for realizing the rapid control function of MAC, and RT-MAC is the function of the existing MAC protocol entity for adding new functions.

The multi-level RLC scheme may divide the RLC protocol entity function into two functional entities, C-RLC and D-RLC, as shown in fig. 4. Each D-RLC is a Branch Link (Branch of the Radio Link), one C-RLC may correspond to a plurality of D-RLC, and one rb (Radio bearer) of each UE corresponds to the C-RLC, and each D-RLC is responsible for providing a data transceiving function for an air interface channel of the UE.

In the multi-stage RLC switching scheme controlled by FC-MAC, the switching of an air interface link of a user is triggered by RRC or FC-MAC, then the multi-stage RLC is informed to switch, the multi-stage RLC completes the switching according to the instruction of the FC-MAC, and meanwhile the FC-MAC informs RT-MAC to complete the switching in cooperation with the RLC.

There are two ways for FC-MAC to control multi-level RLC handover: first, FC-MAC only controls C-RLC, then C-RLC controls D-RLC to finish the switching process according to the instruction of FC-MAC, namely C-RLC and D-RLC are integrated, C-RLC as a whole can receive various controls to finish the switching. And secondly, the FC-MAC uniformly controls the C-RLC and the D-RLC to complete the switching. The switching process between C-RLC and D-RLC all ensures the completion of synchronization under the control of FC-MAC. As shown in FIG. 5, FC-MAC may control C-RLC/D-RLC/RT-MAC to perform handover in unison.

The present embodiment is described with reference to the first mode as an example, that is, the FC-MAC only controls the C-RLC, and the C-RLC controls the D-RLC to complete the handover processing method, specifically as follows:

in step 101, the step of acquiring the handover command for the terminal device by the FC-MAC entity may be: and if the switching is initiated by the RRC according to the decision algorithm, the RRC sends a switching instruction to the FC-MAC.

Correspondingly, the generated switching indication information can be that FC-MAC notifies C-RLC and RT-MAC to complete corresponding air interface switching, and C-RLC controls D-RLC to switch according to the mode indicated by the control information.

In the scenario of performing handover processing in this embodiment, referring to fig. 6, according to the logic function definition (the number of C-RLC managed by each FC-MAC is limited, and the number of D-RLC managed by each C-RLC is limited), the handover of RLC is divided into three major categories: firstly, switching among different FC-MACs; second, switching among different C-RLC but in the same FC-MAC; and thirdly, switching in the same C-RLC. The core of the three major switching processes is that the MAC controls the multi-level RL to complete the switching.

For example, the S-Cell (Source Cell) on the left side of the figure is used as a source Cell for handover, and the handover is performed to three types of target cells, namely D-Cell1(Destination Cell), D-Cell2, D-Cell and the like. D-Cell1 and S-Cell belong to a C-RLC. D-Cell2 and S-Cell belong to different C-RLC but the same FC-MAC. D-Celln and S-Cell belong to different FC-MAC and different C-RLC.

In the switching of three scenes, the interaction between FC-MAC1 and FC-MACn, and C-RLC1, C-RLC2 and C-RLCn completes the interaction of switching control information and data information. The source FC-MAC (FC-MAC1) or the source C-RLC (C-RLC1 receives the FC-MAC switching indication) sends a switching request (HO _ Req), and the destination FC-MAC or the destination C-RLC (HO _ Req) to the destination FC-MAC (FC-MAC1) or the destination C-RLC (C-RLC2 and C-RLCn).

Switching processing between a first type of scene and different MAC entities:

after the FC-MAC entity acquires the handover command for the terminal device in step 101, the method further includes:

if the FC-MAC entity is determined to be a source FC-MAC entity according to the switching instruction, and the destination FC-MAC entity is different from the source FC-MAC entity;

the FC-MAC entity generates a switching request according to the switching instruction, and sends the switching request to a target FC-MAC so that the target MAC performs switching control on at least one stage of RLC entities managed by the target MAC according to the switching request.

The handover command may include at least identification information of a source cell and a destination cell of the terminal device;

correspondingly, the determining that the FC-MAC entity is the source FC-MAC entity and the destination FC-MAC entity is different from the source FC-MAC entity according to the switching instruction may be:

determining the source cell and the target cell according to the switching instruction, further determining a corresponding D-RLC entity allocated to the terminal equipment according to the switching instruction, and then determining a source C-RLC entity and a target C-RLC entity and positions thereof based on the source D-RLC entity and the target D-RLC entity corresponding to the source cell and the target cell; and then determining whether the source C-RLC entity and the target C-RLC entity are in the management of the same FC-MAC entity according to the C-RLC entity management information managed by the FC-MAC.

It should be understood that the number of the source and destination D-RLC entities may be one or more, and the embodiment is not limited thereto.

The FC-MAC entity at least generates switching indication information aiming at least one stage of Radio Link Control (RLC) entity according to the switching instruction, and the switching indication information comprises the following steps: and the FC-MAC entity generates switching instruction information aiming at the managed source C-RLC according to the switching instruction.

The generated switching indication information may be that FC-MAC notifies C-RLC and RT-MAC to complete corresponding air interface switching, and C-RLC controls D-RLC to perform switching according to a mode indicated by the control information.

A second type of scenario, a same MAC entity, a different C-RLC entity processing scenario:

the FC-MAC entity at least generates switching indication information aiming at least one stage of Radio Link Control (RLC) entity according to the switching instruction, and the switching indication information comprises the following steps:

the FC-MAC entity determines that the FC-MAC entity is a source FC-MAC entity according to the switching instruction, and determines that a target FC-MAC entity is the same as the source FC-MAC entity;

the FC-MAC entity determines a target C-RLC entity according to the switching instruction, and if the target C-RLC entity is different from a source C-RLC entity, switching indication information aiming at the source C-RLC entity and the target C-RLC entity is respectively generated;

correspondingly, the FC-MAC entity sends at least the handover indication information to the C-RLC entity, including:

and the FC-MAC entity sends switching indication information aiming at the source C-RLC entity and the target C-RLC entity to the source C-RLC entity and the target C-RLC entity respectively.

The method for determining whether the source and destination C-RLC entities are the same according to the handover command is the same as the processing method described in the first scenario, and is not described herein again.

In addition, a specific manner of processing for the original C-RLC entity and the destination C-RLC entity can be seen in fig. 7, which is a general flowchart of a MAC-controlled multi-stage RLC handover scheme. Wherein, if the RRC of the base station side initiates the switching, the switching is terminated at the RRC of the UE side; if the switching is initiated by the FC-MAC of the base station side, the switching is terminated by the FC-MAC of the UE side; according to the principle of protocol stack peering, the consistency of the state of the protocol entity is ensured.

FIG. 7 illustrates the first way (FC-MAC only controls C-RLC, C-RLC controls D-RLC to complete the handover). The description is given by initiating a handover command by RRC, and specifically includes:

step1, the base station side RRC initiates the switching, and informs the base station side FC-MAC to execute the switching.

Step2, the base station side FC-MAC sends the instruction of switching to the base station side C-RLC.

Step3, the base station side C-RLC sends the switching interactive processing flow to the base station side D-RLC according to the instruction.

And Step4, the FC-MAC at the base station side sends a C-RLC indication message at the base station side in Step2 and simultaneously sends a switching indication to the RT-MAC at the base station side to indicate the RT-MAC to cooperate with the D-RLC to complete the switching.

And Step5 and Step11, the RT-MAC and D-RLC at the base station side and the terminal side interact with the switching flow and information through an air interface. During air interface interaction, a new PDCCH DCI or a new MAC CE may be defined to carry a handover signaling that needs to be interacted. Both approaches may also be used separately for different scenarios. Whichever mode is used, the purpose is to use the simplest air interface indication to realize the fast switching of the air interface of the user.

Step6, interacting the RT-MAC at the UE side and the FC-MAC at the UE side, and completing the switching by cooperating with the RLC at the UE side.

Step7, the UE side FC-MAC instructs the C-RLC of the UE side to perform data processing in handover.

And Step9, completing handover interaction between the C-RLC of the UE side and the D-RLC of the UE side.

Step10, the UE side FC-MAC informs the UE side RT-MAC to send a switching response on an air interface.

Step12, the RT-MAC at the base station side and the FC-MAC at the base station side complete the interaction of the switching response.

And Step8 and Step13, if the switching is initiated by RRC, the FC-MAC of the base station side and the FC-MAC of the terminal side respectively interact with the respective RRC, and the state resetting is completed.

The third type of scenario, handover within the same C-RLC, is as follows:

determining the FC-MAC entity as a source FC-MAC entity and determining that a target FC-MAC entity is the same as the source FC-MAC entity according to the switching instruction;

the FC-MAC entity determines a target C-RLC entity according to the switching instruction, and determines that the target C-RLC entity is the same as a source C-RLC entity;

the FC-MAC entity generates handover indication information for the target C-RLC entity, where the handover indication information is used to indicate the target C-RLC entity to control a source D-RLC entity and a target D-RLC entity to perform handover processing;

and the FC-MAC entity sends the switching indication information aiming at the target C-RLC entity to the target C-RLC entity.

In addition, the handover indication information may include at least one of the following: the source MAC entity identifier, the destination MAC entity identifier, the source C-RLC entity identifier, the destination C-RLC entity identifier, the source D-RLC entity identifier, and the destination D-RLC entity identifier.

Further, in a plurality of scenarios provided by the above embodiments, the following processes may be included: and the FC-MAC entity allocates at least one source real-time MAC entity and a target real-time MAC entity for the switching processing aiming at the terminal equipment according to the switching instruction. Although no specific description is made in the above embodiments, it is understood that each real-time MAC entity may correspond to one D-RLC entity, that is, once an allocated D-RLC entity determines its corresponding real-time MAC entity; the specific corresponding manner is not particularly limited in this embodiment.

The difference from the foregoing scenario is that, when the FC-MAC entity is used as the destination FC-MAC entity, the present embodiment further provides a processing manner as follows: the method further comprises the following steps:

the FC-MAC entity is used for determining that the FC-MAC entity is a target FC-MAC entity and is different from a source FC-MAC entity when receiving a switching request sent by the source FC-MAC entity;

the FC-MAC entity generates switching indication information aiming at a target C-RLC entity according to the switching request;

and the FC-MAC entity sends the switching indication information to a target C-RLC entity.

The manner of generating the switching indication information may be the same as the manner of generating the switching indication information, and is not described herein again.

In this embodiment, the C-RLC serves as a central radio link control entity, and has a functional difference from the D-RLC entity, and the C-RLC is configured to centrally manage at least one D-RLC entity. The C-RLC entity may allocate one radio carrier for each user equipment UE; accordingly, one D-RLC entity may provide a data transceiving function corresponding to the air interface channel of the UE.

Therefore, by adopting the scheme, the FC-MAC entity generates the switching indication information aiming at the at least one stage of RLC entity according to the switching instruction aiming at the middle terminal equipment, and then at least sends the switching indication information to the at least one stage of RLC entity; the RLC entities may include a C-RLC entity and a D-RLC entity. Thus, aiming at the problems caused by frequent switching in the 5G network, the processing for controlling the switching is reduced to the MAC layer and the RLC layer for switching processing, so that the switching time delay can be reduced, the robustness of a link can be ensured, and seamless switching can be realized.

Example II,

step 102: the FC-MAC entity generates switching indication information aiming at least one central radio link control (C-RLC) entity or generates switching indication information aiming at a C-RLC entity and a distributed radio link control (D-RLC) entity according to the switching instruction aiming at the terminal equipment;

The present embodiment is described with reference to the second method as an example, that is, a processing method for controlling C-RLC and D-RLC to complete handover by FC-MAC specifically includes the following steps:

Switching processing between a first type of scene and different MAC entities:

if the FC-MAC entity is determined to be a source FC-MAC entity in the switching process according to the switching instruction, and the destination FC-MAC entity is different from the source FC-MAC entity;

and the FC-MAC entity generates switching indication information aiming at the managed source C-RLC entity and the managed source D-RLC entity respectively according to the switching instruction. The generated switching indication information may be that FC-MAC notifies C-RLC and RT-MAC to complete corresponding air interface switching, and C-RLC controls D-RLC to perform switching according to a mode indicated by the control information.

determining the FC-MAC entity as a source FC-MAC entity according to the switching instruction, and determining that a target FC-MAC entity is the same as the source FC-MAC entity;

determining a target C-RLC entity according to the switching instruction, and determining that the target C-RLC entity is different from a source C-RLC entity;

the FC-MAC entity generates switching indication information aiming at a source C-RLC entity, a target C-RLC entity, a source D-RLC entity and a target D-RLC entity respectively;

and the FC-MAC entity sends switching indication information to a source C-RLC entity, a target C-RLC entity, a source D-RLC entity and a target D-RLC entity respectively.

The third type of scenario, handover within the same C-RLC, is as follows:

the FC-MAC entity generates switching indication information aiming at the target C-RLC entity, the source D-RLC entity and the target D-RLC entity respectively;

and the FC-MAC entity sends switching indication information to a target C-RLC entity, a source D-RLC entity and a target D-RLC entity respectively.

Example III,

An embodiment of the present invention provides a handover processing method, as shown in fig. 8, applied to a C-RLC entity, including:

step 801: C-RLC entity receives switching indication information sent by FC-MAC entity;

step 802: and the C-RLC entity performs switching processing aiming at the terminal equipment according to the switching indication information sent by the FC-MAC entity.

The embodiment aims at the switching interaction of the D-RLC and the respective FC-MAC and C-RLC after the switching interaction flows of the FC-MAC and C-RLC of the source and the destination are completed on the basis of the scenario provided by the first embodiment or the second embodiment.

To achieve seamless handover, the Tx function part of the D-RLC needs to perform handover and data forwarding in some scenarios. FIG. 9 shows the handover interaction procedure of D-RLC and respective FC-MAC and C-RLC as follows: the scenarios of seamless handover are divided into three types:

the first scene,

The C-RLC entity carries out switching processing aiming at the terminal equipment according to the switching indication information sent by the FC-MAC entity, and the switching processing comprises the following steps:

and when the C-RLC entity is determined to be a source C-RLC entity in the switching process according to the switching indication information and the source C-RLC entity is different from a target C-RLC entity in the switching process, switching processing aiming at the terminal equipment is carried out on a source D-RLC entity according to the switching indication information.

In this scenario, the D-RLC entity controlled by the source C-RLC entity has no target branch link switching, and includes two sub-scenarios: a) the air interface channel corresponding to the D-RLC can not be used any more, so that the branched path needs to be deleted directly; b) the data of the user is being transmitted and received on the switched target D-RLC, and the data can only be deleted because the transmission and reception parameters such as SN, Window and the like on the target branch link are not matched and cannot be transplanted in a session.

When a first scene is switched, the C-RLC entity judges whether the source D-RLC entity meets a preset condition, wherein the preset condition represents that an air interface channel of the source D-RLC entity is in a state capable of being continuously used or a target D-RLC entity is in a state of receiving and transmitting data of the terminal equipment; and if the preset conditions are met, carrying out reconfiguration processing on the source D-RLC entity.

Specifically, the C-RLC needs the source D-RLC to discard all unsent data in the transmission window in a redundancy manner, reassemble all data in the reception window as much as possible, submit the data in sequence, and then release the mapping relationship between the D-RLC and the air interface channel. After the request is completed, whether the D-RLC needs to be reserved or not is determined according to specific conditions, and if the UE is still in the coverage range of an air interface channel possibly corresponding to the D-RLC, the D-RLC is reserved and matching of the MAC for next scheduling is waited. And if the UE is not in the air interface coverage range corresponding to the D-RLC, deleting the D-RLC.

The second scenario,

The second scenario is that the target D-RLC exists but is not on one physical device with the source D-RLC, and the terminal side does not exist. To support seamless handover, both SN and Data on the source D-RLC need to be forwarded to the target D-RLC.

When the second scene is switched, the C-RLC entity judges whether a source D-RLC entity and a target D-RLC entity are in the same equipment, if so, the source D-RLC entity is reconfigured, and an air interface channel corresponding to the source D-RLC entity is changed into an air interface channel of the target D-RLC entity;

specifically, C-RLC needs to command the D-RLC to complete the seamless handover of SN and Data. The finally obsolescence of D-RLC still needs to consider the requirements like the first scenario, i.e. temporary non-use or permanent non-use.

The third scenario,

And the C-RLC entity judges whether the source D-RLC entity and the target D-RLC entity are in the same equipment, if not, the data and control information transfer processing is carried out on the source D-RLC entity and the target D-RLC entity, so that the source D-RLC entity and the target D-RLC entity complete the switching processing aiming at the terminal equipment.

The scenario is that the source and target D-RLC are in the same location. In this scenario, only reconfiguration is required to be performed on the source D-RLC, and the air interface channel corresponding to the source D-RLC is changed into a target air interface channel.

And when the third scene is switched, only the C-RLC is required to reconfigure the D-RLC, and other operations are not required.

In addition to the above-described scenarios, the present embodiment also provides a processing scenario in which the CRLC entity is used as a destination C-RLC entity:

and when the C-RLC entity is determined to be a target C-RLC entity in the switching process according to the switching indication information and a source C-RLC entity and a target C-RLC entity in the switching process are different, switching processing aiming at the terminal equipment is carried out on the target D-RLC entity according to the switching indication information.

Example four,

An embodiment of the present invention provides an FC-MAC entity, as shown in fig. 10, including:

an instruction obtaining unit 1001 configured to obtain a switching instruction for a terminal device;

an instruction generating unit 1002, configured to generate handover indication information for at least one central radio link control C-RLC entity or generate handover indication information for a C-RLC entity and a distributed radio link control D-RLC entity according to the handover instruction for the terminal device;

an instruction sending unit 1003, configured to send the handover indication information to the C-RLC entity, or to the C-RLC entity and the D-RLC entity.

the generated switching indication information can be FC-MAC to inform C-RLC and RT-MAC to complete corresponding air interface switching, and C-RLC controls D-RLC to switch according to the mode indicated by the control information.

Switching processing between a first type of scene and different MAC entities:

the instruction generating unit is used for determining that the FC-MAC entity is a source FC-MAC entity in the switching process and a target FC-MAC entity is different from the source FC-MAC entity according to the switching instruction; a switching request is generated according to the switching instruction.

correspondingly, the instruction generating unit is configured to determine the source cell and the destination cell according to the handover instruction, further determine a corresponding D-RLC entity allocated to the terminal device according to the handover instruction, and then determine a source C-RLC entity and a destination C-RLC entity and positions thereof based on the source D-RLC entity and the destination D-RLC entity corresponding to the source cell and the destination cell; and then determining whether the source C-RLC entity and the target C-RLC entity are in the management of the same FC-MAC entity according to the C-RLC entity management information managed by the FC-MAC.

the instruction generating unit is used for determining the FC-MAC entity as a source FC-MAC entity according to the switching instruction and determining that a target FC-MAC entity is the same as the source FC-MAC entity; determining a target C-RLC entity according to the switching instruction, and if the target C-RLC entity is different from a source C-RLC entity, respectively generating switching indication information aiming at the source C-RLC entity and the target C-RLC entity;

correspondingly, the instruction sending unit is configured to send the handover indication information for the source C-RLC entity and the destination C-RLC entity to the source C-RLC entity and the destination C-RLC entity, respectively.

The third type of scenario, handover within the same C-RLC, is as follows:

the instruction generating unit is used for determining the FC-MAC entity as a source FC-MAC entity according to the switching instruction and determining that a target FC-MAC entity is the same as the source FC-MAC entity; determining a target C-RLC entity according to the switching instruction, and determining that the target C-RLC entity is the same as a source C-RLC entity; generating switching indication information aiming at the target C-RLC entity, wherein the switching indication information is used for indicating the target C-RLC entity to control a source D-RLC entity and a target D-RLC entity to carry out switching processing;

correspondingly, the instruction sending unit is used for sending the handover indication information for the target C-RLC entity to the target C-RLC entity.

The difference from the foregoing scenario is that, when the FC-MAC entity is used as the destination FC-MAC entity, the present embodiment further provides a processing manner as follows: the instruction generating unit is used for determining that the instruction generating unit is a target FC-MAC entity and is different from a source FC-MAC entity when receiving a switching request sent by the source FC-MAC entity; generating switching indication information aiming at a target C-RLC entity according to the switching request;

correspondingly, the instruction sending unit is configured to send the handover indication information to the destination C-RLC entity.

Example V,

The second mode in the above embodiment is described as an example, that is, the FC-MAC controls the C-RLC and the D-RLC to complete the handover processing method, specifically as follows:

the FC-MAC entity may obtain the switching instruction for the terminal device as follows: and if the switching is initiated by the RRC according to the decision algorithm, the RRC sends a switching instruction to the FC-MAC.

Switching processing between a first type of scene and different MAC entities:

the instruction generating unit is used for determining that the FC-MAC entity is a source FC-MAC entity in the switching process and a target FC-MAC entity is different from the source FC-MAC entity according to the switching instruction; and generating a switching request according to the switching instruction, and sending the switching request to a target FC-MAC so that the target MAC performs switching control on at least one stage of RLC entities managed by the target MAC according to the switching request.

And the instruction generating unit is used for respectively generating switching instruction information aiming at the managed source C-RLC entity and the managed source D-RLC entity according to the switching instruction. The generated switching indication information may be that FC-MAC notifies C-RLC and RT-MAC to complete corresponding air interface switching, and C-RLC controls D-RLC to perform switching according to a mode indicated by the control information.

the instruction generating unit is used for determining the FC-MAC entity as a source FC-MAC entity according to the switching instruction and determining that a target FC-MAC entity is the same as the source FC-MAC entity;

correspondingly, the instruction sending unit is configured to send the handover indication information to the source C-RLC entity, the destination C-RLC entity, the source D-RLC entity, and the destination D-RLC entity, respectively, by the FC-MAC entity.

The third type of scenario, handover within the same C-RLC, is as follows:

the instruction generating unit is used for determining the FC-MAC entity as a source FC-MAC entity according to the switching instruction and determining that a target FC-MAC entity is the same as the source FC-MAC entity; determining a target C-RLC entity according to the switching instruction, and determining that the target C-RLC entity is the same as a source C-RLC entity; respectively generating switching indication information aiming at the target C-RLC entity, the source D-RLC entity and the target D-RLC entity;

correspondingly, the instruction sending unit is used for sending the handover indication information to the destination C-RLC entity, the source D-RLC entity and the destination D-RLC entity respectively.

Example six,

An embodiment of the present invention provides a C-RLC entity, as shown in fig. 11, including:

a receiving unit 1101, configured to receive handover indication information sent by an FC-MAC entity;

a processing unit 1102, configured to perform handover processing for a terminal device according to the handover indication information sent by the FC-MAC entity.

In this embodiment, after the FC-MAC and C-RLC handover interaction flows for the source and the destination are completed, the handover interaction between the D-RLC and the respective FC-MAC and C-RLC is completed.

the first scene,

And the processing unit is used for performing switching processing aiming at the terminal equipment on the source D-RLC entity according to the switching indication information when the C-RLC entity is determined to be the source C-RLC entity in the switching processing according to the switching indication information and the source C-RLC entity and the target C-RLC entity in the switching processing are different.

The second scenario,

The third scenario,

The processing unit is configured to determine whether the source D-RLC entity and the destination D-RLC entity are in the same device, and if not, perform transfer processing of data and control information on the source D-RLC entity and the destination D-RLC entity, so that the source D-RLC entity and the destination D-RLC entity complete handover processing for the terminal device.

and the processing unit is used for performing switching processing aiming at the terminal equipment on the target D-RLC entity according to the switching indication information when the C-RLC entity is determined to be the target C-RLC entity in the switching processing according to the switching indication information and the source C-RLC entity and the target C-RLC entity in the switching processing are different.

The integrated module according to the embodiment of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as an independent product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for enabling a computer device (which may be a personal computer, a network device, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A switching processing method is applied to a fast control medium access control (FC-MAC) entity in a multi-level MAC scheme and a multi-level RLC scheme, wherein the multi-level MAC scheme comprises the following steps: the MAC entity comprises the FC-MAC entity and an RT-MAC entity, the FC-MAC entity is used for realizing the rapid control function of the MAC, and the RT-MAC entity is used for realizing the function of the existing MAC protocol entity; the multi-stage RLC scheme includes: the RLC entities comprise a central radio link control C-RLC entity and a distributed radio link control D-RLC entity, and one C-RLC entity can correspond to a plurality of D-RLC entities; characterized in that the method comprises:

the FC-MAC entity acquires a switching instruction for the terminal equipment;

2. The method according to claim 1, wherein after the FC-MAC entity obtains the handover instruction for the terminal device, the method further comprises:

if the FC-MAC entity is determined to be a source FC-MAC entity in the switching process according to the switching instruction, and the target FC-MAC entity is different from the source FC-MAC entity;

the source FC-MAC entity generates a handover request according to the handover instruction, and sends the handover request to the destination FC-MAC, so that the destination MAC performs handover control on at least one stage of RLC entities managed by the destination FC-MAC according to the handover request.

3. The method of claim 2, wherein the FC-MAC entity generates handover indication information for at least one central radio link control, C-RLC, entity according to the handover command, comprising:

and the source FC-MAC entity generates switching indication information aiming at the managed source C-RLC according to the switching instruction.

4. The method of claim 1, wherein the FC-MAC entity generates handover indication information for at least one central radio link control, C-RLC, entity according to the handover command, comprising:

5. The method of claim 1, wherein the FC-MAC entity generates handover indication information for at least one central radio link control, C-RLC, entity according to the handover command, comprising:

6. The method of claim 1, further comprising:

when the FC-MAC entity is used as a target FC-MAC, if a switching request sent by a source FC-MAC entity is received, the target FC-MAC entity generates switching indication information aiming at a target C-RLC entity according to the switching request;

and the target FC-MAC entity sends the switching indication information to a target C-RLC entity.

7. The method of claim 2, wherein the FC-MAC entity generates handover indication information for the C-RLC entity and for the D-RLC entity according to the handover command, comprising:

and the FC-MAC entity generates switching indication information aiming at the managed source C-RLC entity and the managed source D-RLC entity respectively according to the switching instruction.

8. The method of claim 1, wherein the FC-MAC entity generates handover indication information for a C-RLC entity and for a D-RLC entity according to the handover command, comprising:

9. The method of claim 1, wherein the FC-MAC entity generates handover indication information for a C-RLC entity and for a D-RLC entity according to the handover command, comprising:

10. A switching processing method is applied to a C-RLC entity in a multi-level MAC scheme and a multi-level RLC scheme, wherein the multi-level MAC scheme comprises the following steps: the MAC entity comprises an FC-MAC entity and an RT-MAC entity, wherein the FC-MAC entity is used for realizing the rapid control function of the MAC, and the RT-MAC entity is used for realizing the function of the existing MAC protocol entity; the multi-stage RLC scheme includes: the RLC entities comprise a central radio link control C-RLC entity and a distributed radio link control D-RLC entity, and one C-RLC entity can correspond to a plurality of D-RLC entities; characterized in that the method comprises:

C-RLC entity receives switching indication information sent by FC-MAC entity;

11. The method of claim 10, wherein the C-RLC entity performs handover processing for the terminal device according to the handover indication information sent by the FC-MAC entity, and comprises:

and when the C-RLC entity is determined to be used as a source C-RLC entity in the switching process according to the switching indication information and the source C-RLC entity is different from a target C-RLC entity in the switching process, the source C-RLC entity performs switching processing aiming at the terminal equipment on a source D-RLC entity according to the switching indication information.

12. The method of claim 11, wherein performing handover processing for a terminal device on a source D-RLC entity according to the handover indication information comprises:

the source C-RLC entity judges whether the source D-RLC entity meets a preset condition, wherein the preset condition represents that an air interface channel of the source D-RLC entity is in a state capable of being continuously used or a target D-RLC entity is in a state of receiving and sending data of the terminal equipment;

and if the preset conditions are met, carrying out reconfiguration processing on the source D-RLC entity.

13. The method of claim 10, wherein the C-RLC entity performs handover processing for the terminal device according to the handover indication information sent by the FC-MAC entity, and comprises:

and when the C-RLC entity is determined to be a source C-RLC entity in the switching process according to the switching indication information and the source C-RLC entity and the target C-RLC entity in the switching process are the same, switching processing aiming at the terminal equipment is carried out on a source D-RLC entity and a target D-RLC entity according to the switching indication information.

14. The method of claim 13, wherein performing handover processing for a terminal device on a source D-RLC entity and a destination D-RLC entity according to the handover indication information comprises one of:

the C-RLC entity judges whether the source D-RLC entity meets a preset condition, wherein the preset condition represents that an air interface channel of the source D-RLC entity is in a state capable of being continuously used or a target D-RLC entity is in a state of receiving and transmitting data of the terminal equipment; if the source D-RLC entity meets the preset condition, carrying out reconfiguration processing on the source D-RLC entity;

the C-RLC entity judges whether a source D-RLC entity and a target D-RLC entity are in the same equipment, if so, source D-RLC is reconfigured, and an air interface channel corresponding to the source D-RLC entity is changed into an air interface channel of the target D-RLC entity;

15. The method of claim 10, wherein the C-RLC entity performs handover processing for the terminal device according to the handover indication information sent by the FC-MAC entity, and comprises:

and when the C-RLC entity is determined to be used as a target C-RLC entity in the switching process according to the switching indication information, and a source C-RLC entity and a target C-RLC entity in the switching process are different, the target C-RLC entity performs the switching process aiming at the terminal equipment on a target D-RLC entity according to the switching indication information.

16. An FC-MAC entity in a multi-level MAC scheme and a multi-level RLC scheme, wherein the multi-level MAC scheme comprises: the MAC entity comprises an FC-MAC entity and an RT-MAC entity, wherein the FC-MAC entity is used for realizing the rapid control function of the MAC, and the RT-MAC entity is used for realizing the function of the existing MAC protocol entity; the multi-stage RLC scheme includes: the RLC entities comprise a central radio link control C-RLC entity and a distributed radio link control D-RLC entity, and one C-RLC entity can correspond to a plurality of D-RLC entities; it is characterized by comprising:

the instruction generating unit is used for generating switching indication information aiming at least one C-RLC entity or generating switching indication information aiming at the C-RLC entity and the D-RLC entity;

17. The FC-MAC entity of claim 16, wherein the instruction generating unit is configured to, if the FC-MAC entity is determined to be a source FC-MAC entity in a handover process according to the handover instruction, and a destination FC-MAC entity is different from the source FC-MAC entity; a switching request is generated according to the switching instruction.

18. The FC-MAC entity of claim 17, wherein the instruction generating unit is configured to generate handover indication information for the managed source C-RLC according to the handover instruction.

19. The FC-MAC entity of claim 16,

20. The FC-MAC entity of claim 16,

21. The FC-MAC entity of claim 16,

the instruction generating unit is used for determining that the instruction generating unit is a target FC-MAC entity and is different from a source FC-MAC entity when receiving a switching request sent by the source FC-MAC entity; generating switching indication information aiming at a target C-RLC entity according to the switching request;

22. The FC-MAC entity of claim 17,

and the instruction generating unit is used for respectively generating switching instruction information aiming at the managed source C-RLC entity and the managed source D-RLC entity according to the switching instruction.

23. The FC-MAC entity of claim 16,

the instruction generating unit is used for determining the FC-MAC entity as a source FC-MAC entity according to the switching instruction and determining that a target FC-MAC entity is the same as the source FC-MAC entity; determining a target C-RLC entity according to the switching instruction, and determining that the target C-RLC entity is different from a source C-RLC entity; respectively generating switching indication information aiming at a source C-RLC entity, a target C-RLC entity, a source D-RLC entity and a target D-RLC entity;

correspondingly, the instruction sending unit is used for sending the switching indication information to the source C-RLC entity, the destination C-RLC entity, the source D-RLC entity and the destination D-RLC entity respectively.

24. The FC-MAC entity of claim 16,

25. A multi-level MAC scheme and a C-RLC entity in the multi-level RLC scheme, wherein the multi-level MAC scheme includes: the MAC entity comprises an FC-MAC entity and an RT-MAC entity, wherein the FC-MAC entity is used for realizing the rapid control function of the MAC, and the RT-MAC entity is used for realizing the function of the existing MAC protocol entity; the multi-stage RLC scheme includes: the RLC entities comprise a central radio link control C-RLC entity and a distributed radio link control D-RLC entity, and one C-RLC entity can correspond to a plurality of D-RLC entities; wherein the C-RLC entity comprises:

26. The C-RLC entity of claim 25, wherein the processing unit is configured to perform handover processing for a terminal device on a source D-RLC entity according to the handover indication information when the C-RLC entity is determined to be a source C-RLC entity in handover processing according to the handover indication information and the source C-RLC entity is different from a destination C-RLC entity in the handover processing.

27. The C-RLC entity of claim 26, wherein the processing unit is configured to determine whether the source D-RLC entity meets a preset condition, where the preset condition indicates that an air interface channel of the source D-RLC entity is in a state capable of being continuously used, or that a destination D-RLC entity is in a state of transceiving data of the terminal device;

28. The C-RLC entity of claim 26, wherein the processing unit is configured to perform handover processing for a terminal device on a source D-RLC entity and a destination D-RLC entity according to the handover indication information when the C-RLC entity is determined to be a source C-RLC entity in a handover process according to the handover indication information and the source C-RLC entity in the handover process is the same as the destination C-RLC entity.

29. The C-RLC entity of claim 28, wherein the processing unit is configured to perform one of:

judging whether the source D-RLC entity meets a preset condition, wherein the preset condition represents that an air interface channel of the source D-RLC entity is in a state capable of being continuously used or a target D-RLC entity is in a state of receiving and transmitting data of the terminal equipment; if the source D-RLC entity meets the preset condition, carrying out reconfiguration processing on the source D-RLC entity;

judging whether a source D-RLC entity and a target D-RLC entity are in the same equipment, if so, reconfiguring the source D-RLC entity, and changing an air interface channel corresponding to the source D-RLC entity into an air interface channel of the target D-RLC entity;

and judging whether the source D-RLC entity and the target D-RLC entity are in the same equipment, if not, transferring data and control information to the source D-RLC entity and the target D-RLC entity so that the source D-RLC entity and the target D-RLC entity complete the switching processing aiming at the terminal equipment.

30. The C-RLC entity of claim 26, wherein the processing unit is configured to perform handover processing for a terminal device on a destination D-RLC entity according to the handover indication information when the C-RLC entity is determined to be a destination C-RLC entity in handover processing according to the handover indication information and a source C-RLC entity and a destination C-RLC entity in the handover processing are different.