CN108377573A

CN108377573A - Method and apparatus for the multi-connection wireless communication system based on cluster

Info

Publication number: CN108377573A
Application number: CN201610899524.8A
Authority: CN
Inventors: 温萍萍
Original assignee: Nokia Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2016-10-14
Filing date: 2016-10-14
Publication date: 2018-08-07
Anticipated expiration: 2036-10-14
Also published as: CN108377573B

Abstract

Embodiment of the disclosure is related to the method and apparatus of the multi-connection wireless communication system based on cluster.For example, proposing a kind of method in terminal equipment side.The terminal device is serviced by the cluster including multiple network equipments, and the multiple network equipment includes the backup network device for being communicated into the service network apparatus of row data communication and for switching the data with the terminal device.This method includes safeguarding the first wireless heterogeneous networks (RRC) state and the second RRC state respectively for the terminal device and the link of the service network apparatus and the terminal device and the link of the backup network device.Embodiment of the disclosure additionally provides the corresponding method implemented at the network equipment, can realize the network equipment and terminal device of the above method in device.

Description

Method and apparatus for the multi-connection wireless communication system based on cluster

Technical field

Embodiments of the present disclosure relate generally to wireless communication systems, and more particularly to wireless in the multi-connection based on cluster The method, apparatus and computer program product of the connection between the network equipment and terminal device are managed in communication system architecture.

Background technology

Raising network capacity and data rate are always the evolution target of cordless communication network.It is used for the next generation in order to obtain The data rate of the Gb per second of mobile cellular communication standard (for example, the 5th generation or 5G), a solution are profits It is communicated with millimeter wave (mmWave or MMW) frequency range.Compared with existing cellular multi-band communication system, millimeter wave frequency band communication Higher communication bandwidth is provided.For example, in the 71st meeting of Radio Access Network (RAN) of third generation cooperative partner program (3GPP) The new research project about new wireless access technology (RAT) is had approved in view.The new RAT (or being NR) considers to use The up to frequency range of 100GHz.Therefore, millimetre-wave attenuator has huge potentiality for providing higher data rate.So And the communication of millimeter wave frequency band has the challenge of its own.

Radio Link between high band, serving cell and terminal device may be interfered or stopped by many factors, Such as fixed or mobile barrier, the rotation of pedestrian and user equipment.In addition, communication link on high band have compared with The BS density of the density ratio low-frequency range network for the network equipment (such as base station (BS)) that high path loss high band network needs Higher, therefore terminal device on the move will need in high band than in current cellular communication frequency range (such as long term evolution (LTE) frequency range) in more frequent switching.

Invention content

The brief overview to each embodiment is shown below, to provide the basic reason to some aspects of various embodiments Solution.The general introduction is not intended to the main points of mark key element or the range of the various embodiments of description.Its sole purpose is with simplification Some concepts are presented in form, as to the aftermentioned preamble being discussed in greater detail.

The method that the first aspect of the disclosure provides the terminal device in a kind of wireless communication system, the terminal device by Cluster including multiple network equipments is serviced, the multiple network equipment include for the terminal device into row data communication Service network apparatus and backup network device for switching data communication, the method includes：For following item The first wireless heterogeneous networks (RRC) state and the second RRC state are safeguarded respectively：The terminal device and the service network apparatus Link and the terminal device and the backup network device link.

In one embodiment, safeguard that the first RRC state and the second RRC state may include respectively：If the terminal First RRC state and second RRC state are disposed as the free time by the demand that equipment is not communicated with the cluster State, and the connection with the service network apparatus is established in response to the terminal device, first RRC state is converted For connection status；And the connection with the backup network device is established in response to the terminal device, by the 2nd RRC shapes The state of state is converted to the third state different from the idle state and the connection status, and the third state has than institute It states the lower energy consumption of connection status and can realize the high-speed traffic of the terminal device and the backup network device.

In another embodiment, safeguard respectively the first RRC state and the second RRC state may further include it is following in At least one of：It is changed into from the service network apparatus for the terminal device for the end in response to first network equipment The backup network device of end equipment will change for the RRC state of the terminal device and the link of the first network equipment For the third state；It is changed into from the backup network device for the terminal device for institute in response to second network equipment The service network apparatus for stating terminal device, will be for the RRC state of the terminal device and the link of second network equipment It is changed into the connection status；And it is added in the cluster in response to the new network equipment：If the terminal device is described First RRC state is in the idle state, then will be for the RRC of the terminal device and the link of the network equipment newly accessed State is set as idle state, will be described if first RRC state of the terminal device is in the connection status Backup network device of the network equipment being newly added as the terminal device；Establish the company with the network equipment of the new addition It connects, and the third will be set as the RRC state of the terminal device and the link of the network equipment of the new addition State.

In another embodiment, which can be unactivated state.In another embodiment, in the third state In, the connection of terminal device and wireless access network and core net is established and keeps.

In a further embodiment, safeguard that the first RRC state and the second RRC state may include following at least one respectively ：For the link of each service network apparatus in the terminal device and the service network apparatus, described the is safeguarded respectively One RRC state, and for the link of each backup network device in the terminal device and the backup network device, respectively Safeguard second RRC state.

In some embodiments, safeguard that the first RRC state and the second RRC state may include at least one of following respectively： For the set of the link of all service network apparatus in the terminal device and the service network apparatus, described first is safeguarded RRC state, and for the set of the link of all backup network devices in the terminal device and the backup network device, Safeguard second RRC state.

In one embodiment, the network equipment can be base station or transmission receiving node (TRP).

In another embodiment, method may further include：The network equipment into the multiple network equipment is sent The information of the ability of the terminal device.

The method that the second aspect of the disclosure provides the first network equipment in a kind of wireless communication system, first net Network equipment and second network equipment belong to same cluster, and are set respectively as the service network apparatus and backup network of terminal device Standby is the terminal device service, wherein the service network apparatus is used for the terminal device into row data communication, it is described Backup network device is communicated for switching the data, the method includes：It is established and described the in response to the terminal device The connection of one network equipment will be set as connection status for the RRC state of the connection；And in response to the first network Equipment is changed into the backup network device for the terminal device from the service network apparatus for the terminal device, by institute It states RRC state and the third state different from idle state and the connection status, the third is changed by the connection status State has energy consumption more lower than the connection status and can realize the terminal device and the backup network device High-speed traffic.

In one embodiment, which can be unactivated state.In another embodiment, in the third state In, the connection of terminal device and wireless access network and core net is established and keeps.

In another embodiment, which can be base station or TRP.

In another embodiment, this method may further include at least one of the following：From the other network equipment Receive the information of the ability of the terminal device；The information that the ability of the terminal device is received from the terminal device, to institute State the ability information that the other network equipment in cluster sends the terminal device；And with the other net in the cluster The RRC configurations of network equipment coordination.

The method that the third aspect of the disclosure provides second network equipment in a kind of wireless communication system, second net Network equipment and first network equipment belong to same cluster, and are set respectively as the backup network device and service network of terminal device Standby is the terminal device service, wherein the service network apparatus is used for the terminal device into row data communication, it is described Backup network device is communicated for switching the data, the method includes：It is established and described the in response to the terminal device The connection of two network equipments will be configured differently than the third of idle state and connection status for the RRC state of the connection State；And it is changed into from the backup network device for the terminal device for described in response to second network equipment The state value of the RRC state is changed into the connection status by the service network apparatus of terminal device by the third state； The third state has energy consumption more lower than the connection status and realizes that the terminal device is set with the backup network Standby high-speed traffic.

In one embodiment, this can be using the third state as unactivated state.In another embodiment, in the third state In, the connection of terminal device and wireless access network and core net is kept.

In another embodiment, second network equipment can be base station or TRP.

In another embodiment, this method may further include at least one of the following：From the other network equipment Receive the information of the ability of the terminal device；And coordinate RRC configurations with the other network equipment in the cluster.

The fourth aspect of the disclosure provides the device in terminal device, and the terminal device is by including multiple network equipments Cluster is serviced, the multiple network equipment include for the terminal device into the service network apparatus of row data communication and Backup network device for switching the data communication, described device include：Processor and memory, the memory Including the instruction executed by the processor, to which described device operation is：The first radio resource is safeguarded respectively for following item (RRC) state of control and the second RRC state：Link and the terminal of the terminal device with the service network apparatus The link of equipment and the backup network device.

5th aspect of the disclosure provides the device in first network equipment, and the first network equipment and the second network are set It is standby to belong to same cluster, and service network apparatus respectively as terminal device and backup network device are terminal device clothes Business, wherein the service network apparatus is used for the terminal device into row data communication, the backup network device is for cutting The data communication is changed, wherein described device includes：Processor and memory, the memory include by the processor The instruction of execution, to which described device operation is：The connection with the first network equipment is established in response to the terminal device, It will be set as connection status for the RRC state of the connection；And in response to the first network equipment from for the end The service network apparatus of end equipment is changed into the backup network device for the terminal device, by the RRC state by described Connection status is changed into the third state different from idle state and the connection status, and the third state has than the company It connects the lower energy consumption of state and can realize the high-speed traffic of the terminal device and the backup network device.

6th aspect of the disclosure provides the device in second network equipment, and second network equipment and first network are set It is standby to belong to same cluster, and backup network device respectively as terminal device and service network apparatus are terminal device clothes Business, wherein the service network apparatus is used for the terminal device into row data communication, the backup network device is for cutting The data communication is changed, wherein described device includes：Processor and memory, the memory include by the processor The instruction of execution, to which described device operation is：The connection with second network equipment is established in response to the terminal device, The third state of idle state and connection status will be configured differently than for the RRC state of the connection；And in response to institute It states second network equipment and is changed into service network for the terminal device from the backup network device for the terminal device The state value of the RRC state is changed into the connection status by network equipment by the third state；The third state has Energy consumption more lower than the connection status and the high-speed traffic for realizing the terminal device and the backup network device.

It will be understood that by being described below, in accordance with an embodiment of the present disclosure, terminal device can be with lower complexity, work( Consumption and signaling overheads keep the connection with the network equipment.In some embodiments, which can change in serving cell When be switched fast data transmission, to improve system performance and user experience.

It should be appreciated that the content described in Summary is not intended to limit the key or again of the embodiment of the present disclosure Feature is wanted, it is also non-for limiting the scope of the present disclosure.The other feature of the disclosure will be easy to understand by description below.

Description of the drawings

From following disclosure and claim, the purpose of the present invention, advantage and other features will become brighter It is aobvious.Here merely for exemplary purpose, refer to the attached drawing provides the non restrictive description of preferred embodiment, in the accompanying drawings：

Fig. 1 shows the signal of the example wireless communication system for the method that can be implemented within embodiment of the disclosure Figure；

Fig. 2A shows the flow for the method implemented at the terminal device of cordless communication network in accordance with an embodiment of the present disclosure Figure；

Fig. 2 B show the schematic diagram that terminal device according to an embodiment of the present disclosure is connect with the network equipment；

Fig. 3 A show that according to an embodiment of the present disclosure, terminal device safeguards the first RRC state and the 2nd RRC shapes respectively The example of state；

Fig. 3 B show that according to an embodiment of the present disclosure, terminal device safeguards the first RRC state and the 2nd RRC shapes respectively Another example of state；

Fig. 4 A-4B show RRC state transition diagram according to an embodiment of the present disclosure, at terminal device；

Fig. 5 A show another scene for the network deployment that can be implemented within embodiment of the disclosure；

Fig. 5 B show the schematic diagram of the connection of terminal device and the network equipment in the scene of Fig. 5 A；

Fig. 6 shows the method implemented at service equipment according to an embodiment of the present disclosure, in cordless communication network Flow chart；

Fig. 7 shows the method implemented at alternate device according to an embodiment of the present disclosure, in cordless communication network Flow chart；

Fig. 8 shows the structure chart of device that is according to an embodiment of the present disclosure, implementing in terminal device；

Fig. 9 shows the structure chart of device that is according to an embodiment of the present disclosure, implementing in service equipment；

Figure 10 shows the structure chart of device that is according to an embodiment of the present disclosure, implementing in alternate device；And

Figure 11 shows the block diagram of the equipment of some embodiments according to the disclosure.

Specific implementation mode

In the following description, many details are illustrated for purposes of illustration.However, those of ordinary skill in the art will recognize The present invention can be realized without using these details by knowing.Therefore, the present invention is not intended to be limited to shown Embodiment but the widest range consistent with principles and features described herein will be endowed.

It should be appreciated that term " first ", " second " etc. are used only for distinguishing an element and another element.And Actually the first element can also be referred to as second element, and vice versa.In addition it should also be understood that " comprising ", "comprising" only by with Illustrate stated feature, element, function or the presence of component, however is not precluded that there are one or more others Feature, element, function or component.

For the ease of explaining, some embodiments of the present invention will be introduced using millimetre-wave attenuator as background herein, and Term in the long term evolution/long term evolution-advanced (LTE/LTE-A) formulated using such as 3GPP, however, such as art technology Personnel are it should be understood that the embodiment of the present invention is not limited to follow the wireless communication system of the wireless communication protocol of 3GPP formulations System, is also not necessarily limited to millimetre-wave attenuator, but can be applied in any wireless communication system there are similar problems, such as WLAN, or following other communication systems etc. developed.

Equally, the terminal device in the disclosure can be user equipment (UE), can also be to appoint with wireless communication function What terminal, including but not limited to, mobile phone, computer, personal digital assistant, game machine, wearable device, vehicular communication equipment, Machine to machine communication equipment and sensor etc..The term terminal device can be with UE, movement station, subscriber station, movement eventually End, user terminal or wireless device are used interchangeably.In addition, the network equipment can be network node, such as node B (Node B, or Person NB), base transceiver station (BTS), base station (BS) or base station sub-system (BSS), relaying, long distance wireless head end (RRF), Access node (AN), access point (AP) etc..

The example wireless communication system 100 for the method that can be implemented within embodiment of the disclosure is shown in FIG. 1 Schematic diagram.Wireless communication system 100 may include one or more network equipment 101-105.For example, in this example, Network equipment 101-105 can be presented as base station, such as the node B (eNodeB or eNB) of evolution.It should be understood that the net Network equipment 101-105 can also be presented as other forms, such as node B, base transceiver station (BTS), base station (BS) or base It stands subsystem (BSS), repeater etc..And each network equipment can be presented as different forms.Network equipment 101-105 is respectively Wireless connection can be provided for the multiple terminal devices 111-112 within its coverage area.

In order to improve network capacity and data rate, some network equipments in network equipment 101-105 may operate in High band, such as millimeter wave (MMW) frequency range.As previously mentioned, the Radio Link in high band is more prone to be stopped, and it is Support the network coverage of high band, it usually needs the network of high-density deployment.At least it is based on considerations above, it is proposed that based on cluster Multiconnection network framework.The framework defines the flexible network architecture and fast and reliable mobility scheme with service user.

Specifically, the network architecture based on cluster is a kind of multi-connection framework, plurality of base station/transfer point (such as Fig. 1 In the network equipment 101 and 102-104 or 103-105) composition one cluster.Base station/the transmission node can be independently operated on High band, such as millimeter wave frequency band can also be operated in low-frequency range (such as LTE frequency ranges) and high band respectively.The cluster can be UE is specific, cell is specific or wave beam is specific.And terminal device (such as UE 111 or 112 in Fig. 1) will be with Multiple connections are established with multiple (for example, all) BS/ transfer points in cluster.At least one of cluster BS can be selected as taking Be engaged in BS, is responsible for transmitting/receiving data.And others BS is used as backup BS in cluster, provides backup link and is used for quickly Data transmission switching.UE by in the connecting link of the cell in cluster and with cluster except neighboring community link It is upper to execute measurement.Based on the measurement, serving cell selection/change and formation/update of cluster can be performed.In general, Selection/change of serving cell may occur since link may be obscured by an obstacle, in the cell in cluster.In addition, example Such as due to the movement of user, the change of cluster may result in.When cluster is changed/updates, the company with the BS for being no longer belong to new cluster Connecing will be released.In addition, UE can also establish the connection with the new cell in new cluster.

As described above, in order to support the quick link switching between cluster (such as cluster 121 or 122 in Fig. 1) interior BS, UE to answer When with the connection with these BS.For the multi-connection in NR systems, at present still without discussing also without determining how to realize tool There is the control plane of wireless heterogeneous networks (RRC) function.

As a kind of option of the multi-connection control plane for NR systems of candidate, a solution and for LTE In dual link solution it is similar.Wherein, the RRC entities in master base station (MeNB) undertake all of all RRC processes Control, such as radio configuration, measurement and mobility control.In this solution, there is no RRC real in prothetic group station (SeNB) Body.Therefore, it if service link is switched to SeNB, needs first to establish RRC entities in SeNB, this cuts quick link It is inappropriate to change.

In another candidate solutions, main NR nodes and auxiliary NR nodes can be allowed to be completely independent or half Independent mode controls its radio resource.Terminal device (such as UE) will have more than one RRC connections simultaneously.But utilize this Kind solution, it is that complexity increases to keep the cost of multiple RRC connections.Especially for the network architecture based on cluster.It utilizes The solution is also required to be maintained as data link, although the backup link is only for the backup link in cluster For quick link switching backup and be not used in before link switching data transmission.

In order to solve at least part in technical problem mentioned above, new method and dress are proposed in the disclosure It sets.Some of this method and device embodiments provide with more low complex degree and power consumption and can realize that fast data-link is cut The control plane solution changed and transmitted.Some embodiments of the present disclosure are provided for the multiconnection network framework based on cluster Control plane solution.In some embodiments, it is used for cluster using new RRC state (for example, referred to as RRC unactivated states) In the backup link for terminal device so that the work that control plane can be more efficient, not only have lower complexity, Power consumption and signaling overheads for backup link, and also there is the ability of the rapid data transmission when serving cell changes.

Exemplary method according to an embodiment of the present disclosure is introduced referring now to Fig. 2A.Fig. 2A shows the reality according to the disclosure Apply the flow chart for the method 200 that example is implemented at the terminal device in cordless communication network (such as network 100 in Fig. 1).It should Method 200 can be executed by the UE 111 or 112 in such as Fig. 1.For convenience of description, with reference to Fig. 1 to method 200 into Row description.

The terminal device for implementing this method 200 is serviced by the cluster including multiple network equipments, multiple network equipment example Such as can be network equipment 101-104 in Fig. 1 either 103-105 and correspondingly the cluster can be cluster 121 in Fig. 1 or 122.Multiple network equipment include for the terminal device (such as UE 111 or 112) into the service network of row data communication Network equipment (such as one or more either one in the 103-105 in Fig. 1 or more in the 101-104 in Fig. 1 It is a), and the backup network device (such as one in the 101-104 in Fig. 1 or more for switching data communication One or more in 103-105 in a or Fig. 1).

As shown in Figure 2 A, at block 210 and 220, terminal device for the terminal device and service network apparatus link, And the first RRC state and the second RRC state are safeguarded respectively for the terminal device and the link of backup network device.

Method 200 is further described by taking the UE 111 in Fig. 1 as an example below.The UE 111 in Fig. 1 is taken by cluster 121 Business, and it can have the connection with multiple base stations (BS).In the example of fig. 1, multiple BS includes BS 101-104.Its In, BS 101 for example may operate in traditional cellular communication band, and (such as LTE frequency ranges, in this example, BS 101 can be LTE BS).And other BS 102-104 may operate in different from traditional cellular communication band higher frequency range (such as MMW frequency ranges).

As shown in Figure 1, in order to avoid causing to disconnect with high band link due to being blocked, UE can (such as When having communication requirement) multiple (for example, all) high band cells for including with cluster (such as 121) establish multiple connections.At this In example, UE 111 can be established and low-frequency range BS (the LTE BS 111 in figure) and high band (such as MMW frequency ranges) BS The connection of 102-104.

The schematic diagram that UE is connect with BS 101-104 is shown in fig. 2b.One or more in these BS, example Such as, LTE BS 101 (low-frequency range BS) and high band BS 102 can be selected as service BS.In this case, such as Fig. 2 B Shown, LTE BS 101 and MMW BS 102 are used as serving cell, they can be used to support traditional multi-connection (example Such as, the function of the dual link in similar LTE).Data transmission can pass through the two services of LTE BS 101 and MMW BS 102 BS is carried out.The control plane of LTE BS 101 and MMW BS 102 can follow that any existing or that develops later is used for The mechanism of tight contact carries out between LTE and NR, such as according to the discussion about the tight contact between LTE and NR in 3GPP It is carried out with final agreement.Embodiment of the disclosure is not limited to the control that any specific mode carrys out service implementation BS 101 and 102 Plane processed.Other BS (103-104) are backup BS, and corresponding link is properly termed as backup link.If UE 111 and MMW BS 102 link is blocked, then it rapidly will be transmitted/received its being switched in cluster by the UE 111 by what BS 102 was carried out Its BS, for example, MMW BS 103.In addition, with the movement of UE, it is possible to create new cluster, such as can be formed shown in Fig. 1 The cluster 122 of MMW BS 103-105 compositions, and the connection of UE 111 and MMW BS 102 will be disconnected.

Using this method 200, UE 111 can be directed to service BS (101-102) and backup BS (103-104) is safeguarded respectively RRC state.It means that the second RRC state between UE 111 and backup BS can be different between the UE and service BS First RRC state.This provides the greater flexibility for the management being connect between UE and the BS in cluster, enabling according to Need to realize the saving of radio resource (including power and signaling), and due in the state, user with wireless network and Core net establishes connection, can carry out rapid data transmission, therefore may be implemented from service BS being switched fast to backup BS.

Show that UE 111 safeguards showing for the first RRC state and the second RRC state respectively in block 210-220 in figure 3 a Example.As shown in Figure 3A, in block 310, if the demand that UE 111 is not communicated with cluster, UE 111 can will with service BS Between the first RRC state and the state value of the second RRC state between backup BS be disposed as idle state.

In block 320, the connection with service network apparatus (such as 101 in Fig. 1 and/or 102) is established in response to UE 111, The state value of first RRC state is changed into connection status；Also, it in block 330, establishes in response to UE 111 and is set with backup network The connection of standby (such as 103-104 in Fig. 1), the state value of the second RRC state is changed into different from the idle state and The third state of the connection status, the third state have energy consumption more lower than the connection status.For example, the third state It can obtain and the comparable power efficiency of the idle state of LTE.

By setting the second RRC state between backup BS to the third state, UE may be implemented to save wireless money The purpose in source (such as energy consumption and signaling), and the ability with rapid data transmission.Note that embodiment of the disclosure and unlimited In any specific definition and design to the third state.Only as an example, the third state can for example realize that terminal is set The standby high-speed traffic with backup network device.For another example the third state can be discussed in 3GPP or determine in the future Other states in addition to idle state and connection status of justice (such as, but not limited to can be referred to as " unactivated state " " RRC Unactivated state ", or it is known as " RRC inactive-connection " state), and follow the regulation in 3GPP about the third state. For example, in the third state state, the connection of UE 111 and wireless access network (RAN) and core net can be established and/or It keeps.In addition, the third RRC state can be designed as meeting NR control plane delay requirements.Further, it is also possible to require for UE under the third RRC state, RAN should appreciate that whether UE from one " notification area based on RAN " is moved to another " base In the notification area of RAN ".

By the way that the connection with backup cell is maintained at the RRC third state, 111 one side of UE can obtain low-power consumption and On the other hand signaling overheads can carry out quick data transmission switching, because in the new RRC state, between RAN and CN Connection (no matter user plane (UP) or control plane (CP)) is kept.Using the embodiment, can with about backup chain The requirement on road is consistent, that is, UE should can have quick link switching (data transmission), and also have minimum money Source consumes (including power/signaling).

Note that in embodiment of the disclosure, it can be by different modes come the shape in block 320-330 in implementing Fig. 3 A State transition operation.The state transition graph of two kinds of example embodiments is given in figures 4 a and 4b.

As shown in Figure 4 A, UE 111 just power on or without traffic demands (460,461) when can be by all links The RRC state of (including part of links and service link) is set as RRC idle states 410.This for example can correspond in Fig. 3 A Block 310.UE 111 establish with service BS and backup BS connection when (as shown in the 420-430 in Fig. 4 A), can will be with Service the connection of BS and RRC connection status 440 (correspond to block 320 in Fig. 3 A) be converted to by RRC idle states, and will with it is standby The connection of part BS is converted to third RRC state (for example being referred to as unactivated state) 450 by RRC idle states and (corresponds in Fig. 3 A Block 330).That is, in the block 320 of Fig. 3 A, by the state value of the second RRC state be changed into the third state include by this second The state value of RRC state directly changes into the third state by RRC idle states.

As another example, in figure 4b, UE 111 is just powered on or without traffic demands (460,461) when can be with It is RRC idle states 410 by all link settings.When UE 111 establishes the connection of BS (including service BS and backup BS) (421), RRC connection status can will be converted to by RRC idle states with the connection for servicing BS and with the connection of backup BS 440, it is (such as referred to as inactive into third RRC state that the connection with backup BS by RRC connection status then converted into (462) again State) 450 (corresponding to the block 330 in Fig. 3 A).That is, in the block 320 of Fig. 3 A, the state value of the second RRC state is changed into The operation of the third state may include：The state value of second RRC state is first changed into RRC connection status, then changes into this The third state.

Referring now to Fig. 3 B, show that UE 111 safeguards the first RRC state and the 2nd RRC respectively in the block 210-220 of Fig. 2 Another example of state.As shown in Figure 3B, safeguard that the operation of the first RRC state and the second RRC state can also include block respectively At least one of in 340-360, with the update for service network apparatus and/or cluster, and correspondingly change RRC state.For example, In block 340, in response to first network equipment (such as BS 102) from the service network for the terminal device (such as UE 111) Equipment is changed into the backup network device for the terminal device, which will be directed to the terminal device and the first network The state value of the RRC state of the link of equipment is changed into the third state.In block 350, in response to second network equipment (such as BS 103) it is changed into the service network apparatus for the terminal device from the backup network device for the terminal device, which sets It is standby to be changed into connection status for the terminal device and the state value of the RRC state of the link of second network equipment.

In block 360, be added in the cluster in response to the new network equipment, terminal device according to its current RRC state and Execute operation.For example, if first RRC state of the terminal device is in the idle state, will be directed to described The RRC state of the link of terminal device and the network equipment newly accessed is set as idle state.On the other hand, if the terminal First RRC state of equipment is in the connection status, then sets the network equipment of the new addition as the terminal Standby backup network device.At this point, the connection with the network equipment of the new addition can also be established, and the end will be directed to End equipment and the RRC state of the link of the network equipment of the new addition are set as the third state.

The embodiment can be adjusted according to change/update of cluster and/or service network apparatus and adaptively for corresponding The RRC state of the network equipment, realizes the saving of radio resource, while the ability for keeping fast data-link to switch.

RRC state conversion in the block 340 of Fig. 3 B and 350 is also embodied in the example of Fig. 4 A and 4B, is turned respectively by state 470 and 480 are moved to show.

In one embodiment, UE can have more than one service network apparatus.For example, there are two UE 111 can have Service network apparatus, BS 101 and BS 102.In this embodiment, UE 111 can be safeguarded by different modes in block 310 For the RRC state of the link with BS 101-102.For example, in block 310, UE 111 can be directed to each in BS 101-102 It is a to safeguard first RRC state respectively.In this embodiment, there will be multiple first RRC states.Multiple first RRC shapes State is synchronous, that is, state value having the same.In another example, UE can be directed to and the link of BS 101-102 Set safeguards first RRC state, that is, is directed to all service BS, safeguards single first RRC state.

Similarly, in another embodiment, UE can have more than one backup network device.For example, UE 111 can be with There are two backup network device, BS 103 and BS104 for tool.In this embodiment, UE 111 can be by different modes in block 320 safeguard for the RRC state with the link of BS 103-104.For example, in block 320, UE 111 can be directed to BS 103-104 In each safeguard second RRC state respectively.In this embodiment, there will be multiple second RRC states.Equally, should Multiple second RRC state state values having the same.In another alternative exemplary, UE can be directed to the link with BS 103-104 Set, safeguard second RRC state.That is, being directed to all backup BS, single second RRC state is safeguarded.

The scene of another network deployment that can be implemented within embodiment of the disclosure is shown in fig. 5.At this The base station of tradition LTE can be not present in scape.As shown in Figure 5A, the BS of high band (such as millimeter wave MMW frequency ranges) is worked in 501,503 groups of clusters 510 of BS 502 and BS, 504 groups of BS 502, BS 503, BS clusters 520, BS 503, BS 504, BS 505 groups of clusters 530.UE 511 will be established and the connection of BS 501, BS 502 and BS 503.BS 501 can be selected as UE 511 service BS.When the service link (i.e. with the link of service BS 501) of UE 511 is by blockings such as automobiles, UE 511 can be with Quickly transmission switching is executed, for example, data transmission/reception is switched to BS 502 from BS 501.

Since the link of BS 501 and UE 511 have preferable quality, it is able in the service link with BS 501 extensive When multiple, UE 511 can re-execute quickly transmission switching, will transmit/receive from BS 502 and be switched to BS 501.With UE 501 movement, such as at the position of the UE 512 in being moved to Fig. 5 A, can be updated for the cluster of the UE 501.For example, BS 504 can be added to new cluster, and BS 501 is removed from the new cluster.Then UE 501 will be established with BS's 504 New connection, and discharge the connection with BS 501.

The schematic diagram that UE 511 is connect with BS 501-503 is shown in figure 5B.As shown in Figure 5 B, UE 111 is established It is connect with multiple RRC of three BS (such as MMWBS) 501-503.BS 501 is used as small for the service of data transmission/reception Area, and other BS, i.e. BS 502-503 are used as backup BS.UE will also be established and the connection of these backups BS.

In one embodiment, the method safeguarded above in association with the RRC state described in Fig. 1-Fig. 4 and method 200 is equally answered Exemplary scene for Fig. 5 A-5B.For example, new cluster is added in response to BS504, UE 511 for example can according to fig. 3 in 350 Operation the RRC state with the BS is set.

Convenient to discuss, the network deployment scenarios that by Fig. 1 can include LTE BS are known as scene 1, and by Fig. 5 A not Network deployment scenarios including LTE BS are known as scene 2.For scene 1, in no uplink (UL)/downlink (DL) number According to transmission demand when, UE will keep RRC idle states for all connection.For example, can be according to reaching at present in 3GPP The resolution (that is, UE has single RRC state machine based on main plot) about the tight contact for realizing LTE and NR, make UE The link that service BS (LTE BS and BS 101) will be directed to keeps RRC idle states.Here, it is assumed that LTE BS be master base station (or Person main plot), base station (or secondary cell) supplemented by MMW BS 101, and RRC state is based on being directed to master base station (i.e. LTE BS) Link.In addition, in the scene 1, UE also keeps RRC idle states about MMW BS 102 and MMW BS 10.For scene 2, UE will keep RRC idle states about all service BS (BS 501) and backup BS (502-503).

If UE has the data transmission about UL/DL, which will establish and multiple connections of multiple cells.For scene 1, UE connect foundation with multiple RRC of LTE BS 101 and multiple MMW BS.LTE BS 101 and MMW BS 102 are to use In the serving cell for the tight contact for supporting LTE and NR, data can be transmitted by the two BS.It, can under the scene According to the resolution about UE with the single RRC state machine based on master base station reached at present in 3GPP, LTE BS will be directed to The link of 101 and MMW BS 102 keeps RRC connection status.For the backup cell in cluster, such as MMW BS 103-104, UE It will keep being in third RRC state, such as unactivated state.Same principle is suitable for scene 2.For example, UE will be directed to service Cell MMW BS 501 keep RRC connection status, and keep the inactive shapes of RRC for backup cell MMW BS 502-503 State.

By the way that the connection with backup cell is maintained at the RRC third state (such as unactivated state), on the one hand enable UE It enough realizes low-power consumption and low signaling overheads, on the other hand UE is quickly counted between serving cell and backup cell Switch according to transmission.Since under the third state (such as new unactivated state), the company of RAN and wireless network and core net Connecing can be maintained (at two aspect of UP and CP).This is consistent with the requirement about backup link, which is：UE should energy The link switching of quick data transmission is enough carried out, and with minimum resource consumption, including power and signaling consumption.

Optionally, in addition, no matter for scene 1 or scene 2, UE can be set to the network of one or more in cluster Preparation send information related with the ability of the terminal device.It is executed in the block 230 that the operation for example can be in fig. 2.More The related information of ability by the terminal device can be shared between a BS, and the RRC that can be for example directed in different BS is real Body coordinate the RRC information of generation.

It is being executed at service network apparatus below in conjunction with the description of attached drawing 6, corresponding with the method 200 that terminal device executes Method 600.

For the sake of simplicity, the BS using in Fig. 1 102 describes method 600 as the example of service network apparatus.It here can be with By BS 102 be known as first network equipment, with second network equipment (such as BS 103 in Fig. 1) belong to same cluster (such as 121) it, and respectively as terminal device, such as the service network apparatus of UE 111 and backup network device is serviced for UE 111, Wherein the service network apparatus 102 is used for UE 111 into row data communication, and the backup network device 103 is logical for switch data Data are communicated from BS 102 and are switched to BS 103 by letter when needed, and before handover, BS's 103 and UE 111 Chain road is communicated without data

As shown in fig. 6, in block 610, the connection with BS 102 is established in response to UE 111, BS 102 will be for the connection RRC state is set as connection status.In block 620, it is changed into from the service network apparatus for UE 111 in response to the BS 102 For the backup network device of the UE, which is changed by connection status different from idle state and connection by BS 102 The third state of state, the third state have energy consumption more lower than connection status and can realize UE 111 and backup network The high-speed traffic of equipment.

This method 600 enables the network equipment to be updated as service network apparatus or backup network device according to it The RRC state being connect with UE realizes the saving of radio resource.Particularly, in one embodiment, above in association with method 200 The description as described in the third state is equally applicable herein, and is not repeated.

In another embodiment, optionally, the BS 102 can also in block 630 from the other network equipment (for example, Fig. 1 In BS 101 or 104) receive about UE 111 ability information.Alternatively, or additionally, in another embodiment, At least one in block 640-660 can also be performed in the BS 102.For example, in block 640, BS 102 can be received from UE 111 and be closed In the information of the ability of the UE；In block 650, the other network equipment (such as BS 103) that BS 102 can be into cluster sends pass In the ability information of UE 111；And in block 660, BS 102 can coordinate RRC configurations with the other network equipment in cluster.

It is being executed at backup network device below in conjunction with the description of attached drawing 7, corresponding with the method 200 that terminal device executes Method 700.For the sake of simplicity, the BS using in Fig. 1 103 describes method 700 as the example of backup network device.It here can be with By BS 103 be known as second network equipment, with first network equipment (such as BS 102 in Fig. 1) belong to same cluster (such as 121), and first network equipment is terminal device, such as UE 111, service network apparatus.

As shown in fig. 7, in block 710, the connection with BS 103 is established in response to UE 111, BS 103 will be for the connection RRC state is configured differently than the third state of idle state and connection status；And in block 720, in response to the BS 103 from Backup network device for the UE is changed into the service network apparatus for the UE, by the state value of the RRC state by third State changes into connection status, wherein the third state has energy consumption more lower than connection status and can be real when needed The now high-speed traffic of the UE and backup network device BS 103.

This method 700 enable BS 103 updated as service network apparatus or backup network device according to it with The RRC state of the connection of UE realizes the saving of radio resource.

In one embodiment, equally applicable herein above in association with the description as described in the third state described in method 200, and It is not repeated.

In one embodiment, optionally, backup network device BS 103 can be in block 730 from the other network equipment The information of the ability of the terminal device is received, and/or, coordinate RRC with the other network equipment in cluster in block 740 and matches It sets.

Fig. 8 shows the block diagram of the device 800 according to some embodiments of the disclosure.The device 800 can for example be implemented Terminal device 111 or 112 sides shown in Fig. 1.Device 800 is described by taking UE 111 as an example below.

As shown in figure 8, device 800 includes：First RRC state control unit 801 and the second RRC state control unit 802. The first RRC state control unit 801 and the second RRC state control unit 802 are respectively configured as UE 111 and service The first RRC state of link maintenance of the network equipment, and the 2nd RRC shapes of link maintenance for UE 111 and backup network device State.

In one embodiment, the first RRC state control unit 801 and the second RRC state control unit 802 can bases The method of any embodiment described in combined method 200 and attached drawing 2-5B is safeguarded respectively for service network apparatus and backup net The RRC state of network equipment.Therefore, detail will not be repeated again.

Optionally, in one embodiment, which can also include transmission unit 803, for being in UE 112 Cluster in one or more network equipment send about the UE ability information.

Fig. 9 shows the block diagram of the device 900 according to some embodiments of the disclosure.The device 900 can for example be implemented At any one network equipment in network equipment 101-105 shown in Fig. 1.Device 900 is described by taking BS 102 as an example below. The BS 102 and another network equipment (such as BS 103) are UE 111 respectively as service network apparatus and backup network device Service.It is understood that in some embodiments, which can also have other service network apparatus and backup The network equipment.

As shown in figure 9, device 900 includes RRC state control unit 901 and RRC state updating unit 902.The RRC state 901 control unit of control unit is configured to respond to the connection of UE 111 foundation and the BS 102, will be for the RRC of the connection State is set as connection status；The RRC state updating unit 902 is configured to respond to the BS 102 from the service for the UE The network equipment is changed into the backup network device for the UE, which is changed by connection status different from idle shape The third state of state and the connection status, the third state have energy consumption more lower than connection status and can be when needed (that is, it needs to when data communication is switched to BS 103 from BS 102) realizes that the UE 111 and backup network device BS's 103 is fast Speed communication.

In one embodiment, RRC state control unit 901 and RRC state updating unit 902 can distinguish implementation 600 block 610 and 620 operation.

Optionally, in one embodiment, which can also include the first receiving unit 903, be configured as from another The outer network equipment receives the information of the ability about UE 111.The other network equipment for example can be BS 101 or BS 103。

Alternatively, or additionally, in another embodiment, device 900 may further include at least one of the following Unit.Second receiving unit 904 is configured as receiving the information of the ability of the terminal device from the UE；Transmission unit 905, It is configured as ability information of the other network equipment transmission about the UE into cluster；And coordination unit 906, it is configured as Coordinate RRC configurations with the other network equipment in cluster.

In one embodiment, block 903-906 can execute the function of the block 630-660 of method 600 respectively.

Figure 10 shows the block diagram of the device 1000 according to some embodiments of the disclosure.The device 1000 for example can be real It applies at any one network equipment in network equipment 101-105 shown in Fig. 1.Device is described by taking BS 103 as an example below 1000.The BS 103 is serviced as backup network device for UE 111, and at another service network apparatus (such as BS 102) In same cluster.It is understood that in some embodiments, terminal device UE 111 can also have other service networks Network equipment and backup network device.

As shown in Figure 10, device 1000 includes RRC state control unit 1001 and RRC state updating unit 1002.The RRC Status control unit 1001 is configured to respond to the connection of UE111 foundation and BS 103, will be for the RRC state of the connection It is configured differently than the third state of idle state and connection status；RRC state updating unit 1002 is configured to respond to BS 103 are changed into from the backup network device for the UE for service network apparatus, by the state value of RRC state by the third state Change into connection status.Wherein, the third state has energy consumption more lower than connection status and can be achieved as desired by the UE The high-speed traffic of 111 and backup network device BS 103.

In one embodiment, RRC state control unit 1001 and RRC state updating unit 1002 can distinguish embodiment party The operation of the block 710 and 720 of method 700.

Optionally, in one embodiment, which can also include receiving unit 1003, be configured as from addition The network equipment receive about UE 111 ability information；And/or coordination unit 1004, be configured as in cluster The other network equipment coordinates RRC configurations.In one embodiment, block 1003-1004 can execute the block of method 700 respectively The operation of 730-740.

It should be noted that can also include in some embodiments, in device 800-1000 other units not shown in the figure. In addition, unit included in 800-1000 can profit realize in various manners, including software, hardware, firmware or it is arbitrary Combination.In one embodiment, one or more units can be realized using software and/or firmware, such as be stored in storage Machine-executable instruction on medium.Other than machine-executable instruction or alternatively, portion in device 800-1000 Divide or whole units can be realized by one or more hardware logic components at least partly.As an example, not a limit, The hardware logic component for the exemplary type that can be used includes field programmable gate array (FPGA), application-specific integrated circuit (ASIC), application specific standard product (ASSP), system on chip (SOC), Complex Programmable Logic Devices (CPLD), etc..

As described above, in certain embodiments, above-described flow, method or process can be by the network equipment or ends Hardware in end equipment is realized.For example, the network equipment or terminal device can utilize its transmitter, receiver, transceiver And/or processor or controller come implementation method 200,600-700.Figure 11, which is shown, is suitable for realizing setting for embodiment of the disclosure Standby 1100 block diagram.Equipment 1100 can be used for realizing the network equipment, such as network equipment 101-105 shown in FIG. 1, Fig. 5 A In 501-505；And/or for realizing terminal device, such as first terminal equipment 111 or 112 shown in FIG. 1.

As shown in the example of Figure 11, equipment 1100 includes processor 1110.The operation of 1110 control device 1100 of processor And function.For example, in certain embodiments, processor 1110 can be by means of being stored in coupled memory 1120 1130 are instructed to execute various operations.Memory 1120 can be any suitable type suitable for local technical environment, and And can be realized using any suitable data storage technology, the memory device, magnetic including but not limited to based on semiconductor are deposited Memory device and system, light storage device and system.Although a memory cell is illustrate only in Figure 11, in equipment The memory cell that can have multiple physics different in 1100.

Processor 1110 can be any suitable type suitable for local technical environment, and may include but unlimited In all-purpose computer, special purpose computer, microcontroller, digital signal controller (DSP) and based on controller multinuclear control One or more of device framework is multiple.Equipment 1100 can also include multiple processors 1110.Processor 1110 can also be with Transceiver 1140 couples, and transceiver 1140 can realize information by means of one or more antennas 1150 and/or other component Send and receive.

When equipment 1100 serves as terminal device, such as when UE 111, processor 1110 and memory 1120 can coordinate behaviour Make, to realize the method 200 described above with reference to Fig. 2.

When equipment 1100 serves as the network equipment 102, processor 1110 and memory 1120 can be with compounding practices, to realize Above with reference to Fig. 6 either 7 description method 600 or 700.

It is suitable for equipment 1100 above with reference to all features described in Fig. 2 and Fig. 6,7, details are not described herein.

In general, the various example embodiments of the disclosure can hardware or special circuit, software, logic or its What implements in combining.Some aspects can be implemented within hardware, and other aspects can by controller, microprocessor or Implement in the firmware or software that other computing devices execute.When the various aspects of embodiment of the disclosure are illustrated or described as frame When figure, flow chart or other certain graphical representations of use, it will be understood that box described herein, device, system, techniques or methods can Using in terms of as unrestricted example in hardware, software, firmware, special circuit or logic, common hardware or controller or other It calculates and implements in equipment or its certain combination.

As an example, embodiment of the disclosure can also be described in the context of machine-executable instruction, machine can Execute instruction such as includes in the program module that is executed in device on the true or virtual processor of target.It is general and Speech, program module include routine, program, library, object, class, component, data structure etc., execute specific task or realization Specific abstract data structure.In embodiments, the function of program module can merge between described program module Or segmentation.Machine-executable instruction for program module can execute in local or distributed apparatus.In distribution In equipment, program module can be located locally in remote medium storage the two.

The computer program code of method used to implement the present disclosure can be write with one or more programming languages.These Computer program code can be supplied to the processing of all-purpose computer, special purpose computer or other programmable data processing units Device so that program code by computer or other programmable data processing units execution when, cause flow chart and/ Or function/operation specified in block diagram is carried out.Program code can completely on computers, part on computers, conduct Independent software package, part are on computers and part is held on a remote computer or server on the remote computer or completely Row.

In the context of the disclosure, machine readable media can be include or storage be used for or about instruction execution system Any tangible medium of the program of system, device or equipment.Machine readable media can be that machine-readable signal medium or machine can Read storage medium.Machine readable media can include but is not limited to electronics, magnetic, it is optical, electromagnetism, infrared or partly lead Body system, device or equipment equipment or its any appropriate combination.The more detailed example of machine readable storage medium includes carrying one Or the electrical connection of multiple conducting wires, portable computer diskette, hard disk, random access memories (RAM), read-only memory (ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), light storage device, magnetic storage apparatus or its is any appropriate Combination.

In addition, although operation is depicted with particular order, this simultaneously should not be construed and require this generic operation to show Particular order is completed with sequential order, or executes the operation of all diagrams to obtain expected result.In some cases, more Task or parallel processing can be beneficial.Similarly, although discussed above contain certain specific implementation details, this is not It should be interpreted that any invention of limitation or the scope of the claims, and should be interpreted that the specific embodiment to specific invention can be directed to Description.Certain features in this specification described in the context of separated embodiment can also combined implementation single real It applies in example.Conversely, various features described in the context of single embodiment can also discretely multiple embodiments or Implement in any appropriate sub-portfolio.

Although with specific to the language description of structural features and or methods of action theme, but it is to be understood that institute The theme limited in attached claim is not limited to above-described special characteristic or action.On the contrary, above-described specific spy Action of seeking peace is disclosed as the exemplary forms for realizing claim.

Claims

1. a kind of method of the terminal device in wireless communication system, the terminal device is by the cluster institute including multiple network equipments Service, the multiple network equipment include for into the service network apparatus of row data communication and being used for the terminal device The backup network device for switching the data communication, the method includes：

The first wireless heterogeneous networks (RRC) state and the second RRC state are safeguarded respectively for following item：

The link of the terminal device and the service network apparatus, and

The link of the terminal device and the backup network device.

2. according to the method described in claim 1, wherein safeguarding that the first RRC state and the second RRC state include respectively：

If the demand that the terminal device is not communicated with the cluster, by first RRC state and the 2nd RRC State is disposed as idle state, and

The connection with the service network apparatus is established in response to the terminal device, first RRC state is converted into company Connect state；

And the connection with the backup network device is established in response to the terminal device, by the shape of second RRC state State is converted to the third state different from the idle state and the connection status, and the third state has than the connection The lower energy consumption of state and the high-speed traffic that can realize the terminal device and the backup network device.

3. according to the method described in claim 2, wherein safeguarding that the first RRC state and the second RRC state further comprise respectively At least one of the following：

It is changed into from the service network apparatus for the terminal device for the terminal device in response to first network equipment Backup network device, it is described by being changed into for the RRC state of the terminal device and the link of the first network equipment The third state,

It is changed into from the backup network device for the terminal device for the terminal device in response to second network equipment Service network apparatus, it is described by being changed into for the RRC state of the terminal device and the link of second network equipment Connection status；And

It is added in the cluster in response to the new network equipment：

If first RRC state of the terminal device is in the idle state, will be directed to the terminal device with The RRC state of the link of the network equipment newly accessed is set as idle state,

If first RRC state of the terminal device is in the connection status, the network of the new addition is set The standby backup network device as the terminal device；The connection with the network equipment of the new addition is established, and will be directed to The RRC state of the terminal device and the link of the network equipment of the new addition is set as the third state.

4. according to the method described in claim 2, the wherein described third state is unactivated state.

5. according to the method described in claim 2, wherein in the third state, the terminal device and wireless access network and The connection of core net is established and keeps.

6. method according to any one of claims 1-5, wherein safeguarding the first RRC state and the second RRC state respectively Including at least one of following：

For the link of each service network apparatus in the terminal device and the service network apparatus, described the is safeguarded respectively One RRC state, and

For the link of each backup network device in the terminal device and the backup network device, described the is safeguarded respectively Two RRC states.

7. method according to any one of claims 1-5, wherein safeguarding the first RRC state and the second RRC state respectively Including at least one of following：

For the set of the link of all service network apparatus in the terminal device and the service network apparatus, described in maintenance First RRC state, and

For the set of the link of all backup network devices in the terminal device and the backup network device, described in maintenance Second RRC state.

8. according to claim 1-5 any one of them methods, wherein the network equipment is base station or transmission receiving node (TRP)。

9. method according to any one of claims 1-5, further comprises：

The network equipment into the multiple network equipment sends the information of the ability of the terminal device.

10. a kind of method of the first network equipment in wireless communication system, the first network equipment and second network equipment Belong to same cluster, and service network apparatus respectively as terminal device and backup network device are terminal device clothes Business, wherein the service network apparatus is used for the terminal device into row data communication, the backup network device is for cutting The data communication is changed, the method includes：

The connection with the first network equipment is established in response to the terminal device, will be set for the RRC state of the connection It is set to connection status；And

It is changed into from the service network apparatus for the terminal device for the terminal in response to the first network equipment The RRC state is changed by the connection status different from idle state and the connection by the backup network device of equipment The third state of state, the third state have energy consumption more lower than the connection status and can realize that the terminal is set The standby high-speed traffic with the backup network device.

11. according to the method described in claim 10, the wherein described third state is unactivated state.

12. according to the method described in claim 10, wherein in the third state, the terminal device and wireless access network And the connection of core net is established and keeps.

13. according to the method described in claim 10, the wherein described first network equipment is base station or transmission receiving node (TRP)。

14. according to the method described in any one of claim 10-13, further comprise at least one of the following：

The information of the ability of the terminal device is received from the other network equipment；

The information of the ability of the terminal device is received from the terminal device,

The other network equipment into the cluster sends the ability information of the terminal device；And

Coordinate RRC configurations with the other network equipment in the cluster.

15. a kind of method of second network equipment in wireless communication system, second network equipment and first network equipment Belong to same cluster, and backup network device respectively as terminal device and service network apparatus are terminal device clothes Business, wherein the service network apparatus is used for the terminal device into row data communication, the backup network device is for cutting The data communication is changed, the method includes：

The connection with second network equipment is established in response to the terminal device, will be set for the RRC state of the connection It is set to the third state different from idle state and connection status；And

It is changed into from the backup network device for the terminal device for the terminal in response to second network equipment The state value of the RRC state is changed into the connection status by the service network apparatus of equipment by the third state；

The third state has energy consumption more lower than the connection status and realizes the terminal device and the backup net The high-speed traffic of network equipment.

16. according to the method for claim 15, wherein the third state is unactivated state.

17. according to the method for claim 15, wherein in the third state, the company of the terminal device and core net It connects and is kept.

18. according to the method for claim 15, wherein second network equipment is base station or transmission receiving node (TRP)。

19. according to the method described in any one of claim 15-18, further comprise at least one of the following：

The information of the ability of the terminal device is received from the other network equipment；And

Coordinate RRC configurations with the other network equipment in the cluster.

20. the device in terminal device in a kind of cordless communication network, the terminal device is by including multiple network equipments Cluster is serviced, the multiple network equipment include for the terminal device into the service network apparatus of row data communication and Backup network device for switching the data communication, described device include：

Processor, and

Memory, the memory include the instruction executed by the processor, to which described device operation is：

The link of the terminal device and the service network apparatus, and

The link of the terminal device and the backup network device.

21. device according to claim 20, be further operable to by following operation safeguard respectively the first RRC state and Second RRC state：

22. device according to claim 21 is further operable to safeguard respectively by least one in following operation First RRC state and the second RRC state：

It is added in the cluster in response to the new network equipment：

23. device according to claim 21, wherein the third state is unactivated state.

24. device according to claim 21, wherein in the third state, the terminal device and wireless access network And the connection of core net is established and keeps.

25. according to the device described in any one of claim 20-24, it is further operable to through at least one in following operation Item safeguards the first RRC state and the second RRC state respectively：

26. according to the device described in any one of claim 20-24, it is further operable to through at least one in following operation Item safeguards the first RRC state and the second RRC state respectively：

27. according to claim 20-24 any one of them devices, wherein the network equipment, which is base station or transmission, receives section Point (TRP).

28. according to the device described in any one of claim 20-24, wherein described device is further operable to：

29. the device in first network equipment in a kind of cordless communication network, the first network equipment and the second network are set It is standby to belong to same cluster, and service network apparatus respectively as terminal device and backup network device are terminal device clothes Business, wherein the service network apparatus is used for the terminal device into row data communication, the backup network device is for cutting The data communication is changed, wherein described device includes：

Processor, and

30. device according to claim 29, wherein the third state is unactivated state.

31. device according to claim 29, wherein in the third state, the terminal device and wireless access network And the connection of core net is established and keeps.

32. device according to claim 29, wherein the first network equipment is base station or transmission receiving node (TRP)。

33. according to the device described in any one of claim 29-32, it is further operable to execute at least one of the following：

Coordinate RRC configurations with the other network equipment in the cluster.

34. the device in second network equipment in a kind of cordless communication network, second network equipment and first network are set It is standby to belong to same cluster, and backup network device respectively as terminal device and service network apparatus are terminal device clothes Business, wherein the service network apparatus is used for the terminal device into row data communication, the backup network device is for cutting The data communication is changed, wherein described device includes：

Processor, and

35. device according to claim 34, wherein the third state is unactivated state.

36. device according to claim 34, wherein in the third state, the company of the terminal device and core net It connects and is kept.

37. device according to claim 34, wherein second network equipment is base station or transmission receiving node (TRP)。

38. according to the device described in any one of claim 34-37, it is further operable to execute at least one of the following：

Coordinate RRC configurations with the other network equipment in the cluster.