CN101873655B - Method and device for processing radio link failure in the process of switching user terminal - Google Patents
Method and device for processing radio link failure in the process of switching user terminal Download PDFInfo
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- CN101873655B CN101873655B CN200910083023.2A CN200910083023A CN101873655B CN 101873655 B CN101873655 B CN 101873655B CN 200910083023 A CN200910083023 A CN 200910083023A CN 101873655 B CN101873655 B CN 101873655B
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Abstract
The invention discloses a method for processing a radio link failure in the process of switching a user terminal, which comprises that: after receiving a switching signaling and before switching to a target cell, the user terminal determines the current radio link failure, does not trigger radio connection reconstruction but directly triggers Radio Link Control RLC layer reconstruction, and synchronizes and switches to the target cell; or after receiving a switching signaling and before switching to a target cell, the user terminal detects the current radio link failure, restores parameter configuration in a source cell and triggers radio connection reconstruction; or after receiving a switching signaling, the user terminal stops data transmission with a source cell, extracts parameters allocated by a target cell for the user terminal from the switching signaling, configures the parameters, and synchronizes to the target cell. The invention also discloses a device for implementing the method. The method and the device promote access experience of users; and the method is simple and practical.
Description
Technical field
The present invention relates to the treatment technology of Radio Link Failure, particularly relate to processing method and the device of reply Radio Link Failure when a kind of user terminal switches.
Background technology
Along with the development of network architecture flattening and the appearance of the removable access way of multiple high-speed wideband, the transmission rate making the wireless communication system of evolution can provide higher, shorter propagation delay time, 3G (Third Generation) Moblie partnership project (3GPP can also be supported, The 3rd Generation Partnership Project) mobility between inter Access System, and mobility between 3GPP connecting system and non-3 GPP access system etc., impel mobile communication system to propose framework theory of future generation.
Fig. 1 is the next generation network configuration diagram of long evolving system/System Architecture Evolution, as shown in Figure 1, Long Term Evolution (LTE, Long Term Evolution) system/System Architecture Evolution (SAE, SystemArchitecture Evolution) framework of future generation comprise by the base station (eNB of evolution, eNodeB) Radio Access Network (E-RAN of evolution is formed, Evolved Radio Access Network) and the packet core network of evolution, wherein, the packet core network of evolution is by Mobility Management Entity (MME, MobilityManagement Entity) and service gateway entity (S-GW, Serving Gateway) composition.Interface between eNB and core network is S1 interface, and wherein, the interface between eNB and MME is expressed as S1-MME, for completing the chain of command function of mobile management and S1 interface; Interface between eNB and S-GW is expressed as S1-U, for the function such as route, transmission of completing user data.Be connected by X2 interface between eNB, X2 interface is used for the information interaction between the eNB of completing user terminal mobile management function in active state and equity.
In LTE system, in order to mobile communication system has stronger robustness, as user terminal (UE, User Equipment) Radio Link Failure detected, handoff failure maybe can not meet wireless connections when reshuffling the reasons such as the requirement of (RRC connection Reconfiguration), introduce the thought that (RRCconnection Re-establishment) is rebuild in wireless connections, now UE needs the process performing community selection to select suitable community, now, suitable cell selected by UE is called new community (Target cell), new community can be that cell-of-origin and former UE connect the community at place, also can be different communities.
Fig. 2 is the flow chart that in long evolving system, wireless connections are rebuild, and as shown in Figure 2, wireless connections are rebuild and comprised the following steps:
Step 201:UE sends wireless connections and rebuilds request (RRC connectionreestablishment request) to base station in new community, comprise the Radio Network Temporary Identifier C-RNTI of UE in cell-of-origin in this signaling, Cell Radio Network Temporary Identifier), cell-of-origin mark (Physical CellIdentity) information, security configuration (ShortMAC-I) information etc. of UE in cell-of-origin.
Step 202: after the Radio Resource of base station needed for this UE distribution, send wireless connections to this UE and rebuild (RRC connection reestablishment) signaling.Wireless connections are rebuild signaling and are comprised UE in the wireless resource configuration (Radio Resource Config Dedicated) of Target cell and the information (NextHopChainingCount) about security configuration.
Step 203:UE extracts Target cell parameter wherein and configures, sending the signaling that (RRC connection reestablishmentcomplete) has been rebuild in wireless connections to base station after receiving the wireless connections reconstruction signaling sent base station.
After wireless connections have been rebuild, UE has re-established the dedicated channel transmitted for signaling in new community, then UE needs the dedicated channel of reshuffling for data transmission to carry out transfer of data.
In the handoff procedure of reality, when UE receives hand off signaling, start timer T304 and configure the parameter of Target cell, now UE still keeps being connected with cell-of-origin, can carry out data transmission.If now wireless spread-spectrum technology (RLC, Radio Link Control) layer instruction reach maximum times re-transmission cause Radio Link Failure, the flow process of wireless connections reconstruction is triggered immediately according to existing consultation, but be configured the parameter of new Target cell due to now UE, UE can rebuild the parameter such as RNTI, security configuration information of carrying Target cell in request in wireless connections, network side receives wireless connections and rebuilds after signaling, can rebuild the parameter of carrying in signaling be not cell parameter in cell-of-origin and cause rebuilding unsuccessful because of wireless connections.For this problem, the scheme do not solved in existing agreement.
Summary of the invention
In view of this, tackle processing method and the device of Radio Link Failure when main purpose of the present invention is to provide a kind of user terminal to switch, link conversion can be completed during switching during Radio Link Failure in time, the not communication of interruption U E.
For achieving the above object, technical scheme of the present invention is achieved in that
A processing method for reply Radio Link Failure when user terminal switches, comprising:
After receiving hand off signaling, be switched to Target cell before, user terminal detects current Radio Link Failure, described user terminal do not trigger wireless connections rebuild.
Preferably, described user terminal also comprises after not triggering wireless connections reconstruction:
Described user terminal triggers the reconstruction of wireless spread-spectrum technology rlc layer, is switched to described Target cell.
Preferably, described hand off signaling comprises described Target cell is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes.
Preferably, described method also comprises:
When user terminal receives hand off signaling, configuring described Target cell is security configuration information, the RNTI that described user terminal distributes.
Preferably, described user terminal detects current Radio Link Failure and refers to that described user terminal receives the instruction that rlc layer reaches maximum retransmission.
A processing method for reply Radio Link Failure when user terminal switches, comprising:
After receiving hand off signaling, be switched to Target cell before, user terminal detects current Radio Link Failure, and described user terminal recovers the parameter configuration in cell-of-origin, triggers wireless connections and rebuilds.
Preferably, when described user terminal receives hand off signaling, extract Target cell described in described hand off signaling be described user terminal distribute parameter and be configured.
Preferably, described user terminal recovers the parameter configuration in cell-of-origin, is specially:
Described user terminal at least Restorer varieties community is security configuration information and the Radio Network Temporary Identifier RNTI of the distribution of described user terminal.
Preferably, described Target cell is that the parameter that described user terminal distributes comprises: described Target cell is RNTI, wireless resource information, the security configuration information that described user terminal distributes.
Preferably, described user terminal detects current Radio Link Failure and refers to that described user terminal receives the instruction that rlc layer reaches maximum retransmission.
A processing method for reply Radio Link Failure when user terminal switches, comprising:
After receiving hand off signaling, user terminal stops and the transfer of data of cell-of-origin, extracts Target cell described in described hand off signaling and is the described user terminal parameter of distributing and is configured, be then synchronized to described Target cell.
Preferably, described Target cell is that the parameter that described user terminal distributes comprises RNTI, wireless resource information, security configuration information.
A processing unit for reply Radio Link Failure when user terminal switches, comprising:
Receiving element, for receiving hand off signaling;
Determining unit, for before being switched to Target cell, determines that whether current wireless link is failed, trigger processing unit when being; And
Processing unit, directly triggering the reconstruction of wireless spread-spectrum technology rlc layer, being then switched to described Target cell for not triggering wireless connections to rebuild.
Preferably, described hand off signaling comprises described Target cell is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes.
Preferably, described device also comprises:
Dispensing unit, for when described receiving element receives hand off signaling, configuring described Target cell is the RNTI of described user terminal distribution, the parameter of security configuration information.
A processing unit for reply Radio Link Failure when user terminal switches, comprising:
Receiving element, for receiving hand off signaling;
Extraction unit is the parameter that described user terminal distributes for the described Target cell of extracting in described hand off signaling;
Dispensing unit is the parameter that described user terminal distributes for configuring described Target cell;
Determining unit, for before being switched to Target cell, determines that whether current wireless link is failed, triggers recovery unit when being;
Recovery unit, for recovering the parameter configuration in cell-of-origin, and triggers wireless connections reconstruction unit; And
Wireless connections reconstruction unit, rebuilds for triggering wireless connections.
Preferably, described recovery unit recovers the parameter configuration in cell-of-origin, is specially:
Described recovery unit at least Restorer varieties community is security configuration information and the Radio Network Temporary Identifier RNTI of the distribution of described user terminal.
Preferably, described Target cell is that the parameter that described user terminal distributes comprises: described Target cell is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes.
A processing unit for reply Radio Link Failure when user terminal switches, comprising:
Receiving element, for receiving hand off signaling;
Stop unit, for stopping the transfer of data with cell-of-origin;
Extraction unit is the parameter that described user terminal distributes for the described Target cell of extracting in described hand off signaling;
Dispensing unit is the parameter that described user terminal distributes for configuring described Target cell; And
Switch unit, for synchronous and be switched to described Target cell.
Preferably, described Target cell is that the parameter that described user terminal distributes comprises: described Target cell is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes.
When UE receives hand off signaling, start timer T304 and be that the parameter that described user terminal distributes completes self configuration according to Target cell in hand off signaling, to carry out the preparation being switched to Target cell, before being switched to Target cell, if receive the radio link failure information of rlc layer, wireless connections reconstruction can not be carried out immediately, but directly carry out the reconstruction of rlc layer, or, first recover the parameter configuration in cell-of-origin, then carry out wireless connections reconstruction.The present invention proposes UE processing method during Radio Link Failure in handoff procedure, compensate for therefore situation and the defect of the communication disruption that causes handoff failure to be formed, the access that the present invention improves user is experienced, and the service quality that user terminal provides is higher.The present invention realizes simple and practical.
Accompanying drawing explanation
Fig. 1 is the next generation network configuration diagram of long evolving system/System Architecture Evolution;
Fig. 2 is the flow chart that in long evolving system, wireless connections are rebuild;
The flow chart of the processing method embodiment one of reply Radio Link Failure when Fig. 3 is UE of the present invention switching;
The flow chart of the processing method embodiment three of reply Radio Link Failure when Fig. 4 is UE of the present invention switching;
The flow chart of the processing method embodiment four of reply Radio Link Failure when Fig. 5 is UE of the present invention switching;
The composition structural representation of the processing unit embodiment one of reply Radio Link Failure when Fig. 6 is UE of the present invention switching;
The composition structural representation of the processing unit embodiment two of reply Radio Link Failure when Fig. 7 is UE of the present invention switching;
The composition structural representation of the processing unit embodiment three of reply Radio Link Failure when Fig. 8 is UE of the present invention switching.
Embodiment
Basic thought of the present invention is: when UE switches, when UE receives hand off signaling, start timer T304 and be that the parameter that described user terminal distributes completes self configuration according to Target cell in hand off signaling, Target cell is the parameter that described user terminal distributes is correct, UE can correctly configure, to carry out the preparation being switched to Target cell, before being synchronized to Target cell, if receive the radio link failure information that rlc layer or other reasons cause, wireless connections reconstruction can not be carried out immediately, but directly carry out the reconstruction of rlc layer, or, first recover the parameter configuration in cell-of-origin, carry out wireless connections reconstruction again.The present invention proposes in handoff procedure the UE processing method tackling Radio Link Failure, compensate for therefore situation and the defect of the communication disruption that causes handoff failure to be formed, the access that the present invention improves user is experienced, and the service quality that user terminal provides is higher.The present invention realizes simple and practical.
For making the object, technical solutions and advantages of the present invention clearly understand, by the following examples also with reference to accompanying drawing, the present invention is described in more detail.Tackle the example that Radio Link Failure does not trigger wireless connections reconstruction when embodiment one and embodiment two are and switch, when embodiment three and embodiment four are and switch, tackle the example that Radio Link Failure triggers wireless connections reconstruction.
Embodiment one
In LTE system, connected between base station 1 and base station 2 by X2 interface, UE is arranged in administrative community, base station 11, is in connection status, and base station 1 is configured with measurement configuration information for UE.Jurisdiction district, base station 22, community 3 and community 1 neighboring BS relationship each other.This routine small area 1 is cell-of-origin.
The a certain moment, UE is according to the measurement configuration of self, detect that the signal quality of community 2 is better than the signal quality of community 1, UE sends the signal quality of community 2 measurement report better than the signal quality of community 1 to base station 1, after base station 1 receives measurement report, make handover decisions, community 2 is switched as Target cell.The flow chart of the processing method embodiment one of Radio Link Failure when Fig. 3 is UE of the present invention switching, as shown in Figure 3, when in this example, UE switches, the processing method of Radio Link Failure comprises the following steps:
Step 301: base station 1 sends handover request (Handover Request) signaling by X2 interface to base station 2, and this signaling carries the cell identity information of Target cell, and UE is at the UE Context of community 1.UE Context comprises wireless resource information, the security configuration information (safe key Key, protection algorithm integrallty information etc.) that the RNTI that distributes for this UE community 1 and community 1 are distributed for this UE.
Step 302: base station 2 is UE distributing radio resource, base station 2 returns Handover Request Acknowledge (Handover Request Acknowledge) signaling to base station 1, it be identification information (C-RNTI), security configuration information and the Target cell that this UE configures is the wireless resource information etc. that UE distributes that this signaling comprises Target cell.
Step 303: base station 1 sends hand off signaling (RRC Connection Reconfiguration) to UE, comprising Target cell in this signaling is the information such as Radio Network Temporary Identifier (C-RNTI), Radio Resource, security configuration that UE distributes.
When step 304:UE receives hand off signaling, start timer T304, extract the parameter of distributing for UE Target cell as in Target cell the C-RNTI, security configuration information etc. that are distributed be configured in UE, Target cell is the parameter of described user terminal distribution is correct, and UE can correctly configure.Before being switched to Target cell, UE still carries out transfer of data (uplink and downlink) by the wireless link between community 1 and core net, now UE receive RLC instruction reach maximum retransmission, determine Radio Link Failure current in community 1, but UE do not trigger wireless connections rebuild flow process or ignore current Radio Link Failure (namely after receiving switching command to the period during being switched to Target cell, UE not thinks to there is Radio Link Failure), but directly carry out the reconstruction of rlc layer, for all built radio bearers rebuild RLC (re-establish RLC).
It is synchronous that step 305:UE obtains with Target cell, sends switching complete signaling (RRCConnection Reconfiguration Complete) to base station 2.
Then base station 2 is to core net transmit path handover request, connects at new S1 interface so that base station 2 is this UE, and sends the contextual signaling of release UE to base station 1, is the wireless network resource of UE distribution before base station 1 discharges.UE communicates with core net in Target cell.
Embodiment two
In LTE system, UE is arranged in administrative community, base station 11, is in connection status, and configuration is measured for UE is configured with in base station 1.Jurisdiction district, base station 12, community 3 and community 1 neighboring BS relationship each other.This routine small area 1 is cell-of-origin.
The a certain moment, UE is according to the measurement configuration of self, detect that the signal quality of community 2 is better than the signal quality of community 1, UE sends the signal quality of community 2 measurement report better than the signal quality of community 1 to base station 1, after base station 1 receives measurement report, make handover decisions, community 2 is switched as Target cell.Because community 2 and community 1 belong to the flow process that base station 1, UE switches to Target cell together be: base station 1 is UE distributing radio resource, C-RNTI, security configuration in Target cell; Base station 1 sends hand off signaling to UE, and comprising Target cell in this signaling is the information such as Radio Network Temporary Identifier (C-RNTI), Radio Resource, security configuration that UE distributes.When UE receives hand off signaling, start timer T304, extract the parameter of distributing for this UE Target cell as in Target cell the C-RNTI, security configuration information etc. that are distributed be configured in UE, Target cell is the parameter that described user terminal distributes is correct, UE can correctly configure (be it should be noted that if the parameter of distributing is incorrect, UE can not configure this parameter, and causes UE to initiate wireless connections reconstruction).Before being switched to Target cell, UE still carries out transfer of data (uplink and downlink) by community 1 and core net, now UE receive RLC instruction reach maximum retransmission, UE determines Radio Link Failure current in community 1, but UE do not trigger wireless connections rebuild flow process or ignore current Radio Link Failure (namely after receiving switching command to the period during being switched to Target cell, UE not thinks to there is Radio Link Failure), but directly carry out the reconstruction of rlc layer, for all built radio bearers rebuild RLC (re-establish RLC), it is synchronous that UE obtains with Target cell, the signaling switched is sent to base station 1.
After base station 1 receives the signaling switched, be released to the wireless network resource that this UE distributes in community 1.UE continues in Target cell to communicate with core net.
Embodiment three
In LTE system, connected between base station 1 and base station 2 by X2 interface, UE is arranged in administrative community, base station 11, is in connection status, and base station 1 is UE distribution Radio Network Temporary Identifier (C-RNTI1) and measurement configuration information.Jurisdiction district, base station 22, community 3 and community 1 neighboring BS relationship each other.This routine small area 1 is cell-of-origin.
The a certain moment, UE is according to the measurement configuration of self, detect that the signal quality of community 2 is better than the signal quality of community 1, UE sends the signal quality of community 2 measurement report better than the signal quality of community 1 to base station 1, after base station 1 receives measurement report, make handover decisions, community 2 is switched as Target cell.The flow chart of the processing method embodiment three of Radio Link Failure when Fig. 4 is UE of the present invention switching, as shown in Figure 4, when in this example, UE switches, the processing method of Radio Link Failure comprises the following steps:
Step 401: base station 1 sends handover request (Handover Request) signaling by X2 interface to base station 2, and this signaling comprises the cell identity information of Target cell, and UE is at the UE Context of community 1.UE Context comprises RNTI that UE uses in community 1 and wireless resource information, security configuration information (safe key Key, protection algorithm integrallty information etc.) that community 1 is distributed for UE.
Step 402: base station 2 is UE distributing radio resource, base station 2 returns Handover Request Acknowledge (Handover Request Acknowledge) signaling to base station 1, this signaling is included in the information such as Radio Resource of mark (C-RNTI 2) that Target cell adopts, security configuration and distribution.
Step 403: base station 1 sends hand off signaling (RRC Connection Reconfiguration) to UE, comprising Target cell in this signaling is the information such as Radio Network Temporary Identifier (C-RNTI 2), Radio Resource, security configuration that UE distributes.
When step 404:UE receives hand off signaling, start timer T304, extract the parameter of distributing for this UE Target cell as in Target cell the C-RNTI 2, security configuration information etc. that are distributed be configured in UE, Target cell is the parameter that described user terminal distributes is correct, and UE can correctly configure.Before synchronous with Target cell, UE still carries out transfer of data (uplink and downlink) by community 1 and core net, now UE receive RLC instruction reach maximum retransmission or other mistakes, UE confirms Radio Link Failure current in community 1, UE recovers the cell parameter configuration in community 1, comprises the information such as C-RNTI, security configuration, measurement configuration recovered in community 1.But UE need not recover the information such as configuration (sps-Config) of physical resource configuration (physicalConfigDedicated) in community 1, MAC configuration (mac-MainConfig), semi-persistent scheduling.UE triggers wireless connections and rebuilds flow process.
Step 405:UE performs community and selects, UE selects suitable jurisdiction district, base station 23, UE sends wireless connections and rebuilds request to base station 2, comprise the information such as cell ID (Physical Cell Identity), the security configuration (ShortMAC-I) of UE in cell-of-origin of C-RNTI that UE distributes in cell-of-origin (community 1), cell-of-origin in this signaling.
Step 406: after the Radio Resource of base station 2 needed for this UE distribution, send wireless connections to this UE and rebuild (RRC connection reestablishment) signaling.
Step 407:UE configures new parameter, sends the signaling that wireless connections have been rebuild to base station after receiving the wireless connections reconstruction signaling sent base station 2.
After wireless connections have been rebuild, UE has re-established the dedicated channel transmitted for signaling in new community, then UE reshuffles the dedicated channel for data transmission to carry out transfer of data.UE continues to communicate with core net in cell 3.
Embodiment four
In LTE system, there is not X2 interface between base station 1 and base station 2, UE is arranged in administrative community, base station 11, is in connection status, being configured with C-RNTI for UE and measuring the information such as configuration of base station 1.Base station 1 also has jurisdiction district 2, jurisdiction district, base station 23 and community 1, community 2 neighboring BS relationship each other.Base station 1 and base station 2 can be Home eNodeB.This routine small area 1 is cell-of-origin.
The a certain moment, UE is according to measurement configuration information, detect that the signal quality of community 3 is better than the signal quality of community 1, UE sends the signal quality of community 3 measurement report better than the signal quality of community 1 to base station 1, after base station 1 receives measurement report, make handover decisions, community 3 is switched as Target cell.The flow chart of the processing method embodiment four of Radio Link Failure when Fig. 5 is UE of the present invention switching, as shown in Figure 5, when in this example, UE switches, the processing method of Radio Link Failure comprises the following steps:
Step 501: base station 1 sends switching demand (Handover Required) signaling by S1 interface to core net, and this signaling carries the cell identity information of Target cell, and UE is at the UE Context of community 1.UE Context is included in RNTI that community 1 uses and wireless resource information, security configuration information (comprising safe key Key, protection algorithm integrallty information etc.) that community 1 is distributed for UE.
Step 502: core net sends handover request (Handover Request) signaling to base station 2, this signaling carries the UE Context of UE in community 1.
Step 503: base station 2 is UE distributing radio resource, base station 2 returns Handover Request Acknowledge (Handover Request Acknowledge) signaling to core net, and it is the information such as Radio Network Temporary Identifier (C-RNTI), Radio Resource, security configuration that UE distributes that this signaling comprises Target cell.
Step 504: core net sends switching command (Handover Command) to base station 1, it is the information such as Radio Network Temporary Identifier (C-RNTI), Radio Resource, security configuration that UE distributes that this order comprises Target cell.
Step 505: base station 1 sends hand off signaling (RRC Connection Reconfiguration) to UE, this signaling destination community is the information such as Radio Network Temporary Identifier (C-RNTI), Radio Resource, security configuration that UE distributes.
When step 506:UE receives hand off signaling, start timer T304, extract the parameter of distributing for this UE Target cell as in Target cell the C-RNTI, security configuration information etc. that are distributed be configured in UE, Target cell is the parameter that described user terminal distributes is correct, and UE can correctly configure.Before being switched to Target cell, UE still carries out transfer of data (uplink and downlink) by community 1 and core net, now UE receive RLC instruction reach maximum retransmission or other mistakes, UE determines Radio Link Failure current in community 1, UE recovers the cell parameter configuration in community 1, comprises the information such as C-RNTI, security configuration, measurement configuration recovered in community 1.But UE need not recover the information such as configuration (sps-Config) of physical resource configuration (physicalConfigDedicated) in community 1, MAC configuration (mac-MainConfig), semi-persistent scheduling.UE triggers wireless connections and rebuilds flow process.
Step 507:UE performs community and selects, UE selects suitable jurisdiction district, base station 12, UE sends wireless connections and rebuilds request to base station 1, comprise the information such as cell ID (Physical Cell Identity), the security configuration (ShortMAC-I) of UE in cell-of-origin of the C-RNTI of UE in cell-of-origin (community 1), cell-of-origin in this signaling.
Step 508: after the Radio Resource of base station 1 needed for this UE distribution, send wireless connections to this UE and rebuild (RRC connection reestablishment) signaling.
Step 509:UE configures new parameter, sends the signaling that wireless connections have been rebuild to base station 1 after receiving the wireless connections reconstruction signaling sent base station 1.
After wireless connections have been rebuild, UE has re-established the dedicated channel transmitted for signaling in new community, then UE reshuffles the dedicated channel for data transmission to carry out transfer of data.UE continues to communicate with core net in community 2.
In order to prevent the sight occurring Radio Link Failure when switching, when proposing to switch, stop the method with the transfer of data of cell-of-origin.Embodiment five has done detailed description to this.
Embodiment five
In LTE system, connected between base station 1 and base station 2 by X2 interface, UE is arranged in administrative community, base station 11, is in connection status, and base station 1 is configured with measurement configuration information for UE.Jurisdiction district, base station 22, community 3 and community 1 neighboring BS relationship each other.This example small area 1 is cell-of-origin.
The a certain moment, UE is according to the measurement configuration of self, detect that the signal quality of community 2 is better than the signal quality of community 1, UE sends the signal quality of community 2 measurement report better than the signal quality of community 1 to base station 1, after base station 1 receives measurement report, make handover decisions, community 2 is switched as Target cell.The flow process switched is:
Base station 1 sends handover request (Handover Request) signaling by X2 interface to base station 2, and this signaling carries the cell identity information of Target cell, and UE is at the UE Context of community 1.UE Context comprises wireless resource information, the security configuration information (safe key Key, protection algorithm integrallty information etc.) that the RNTI that distributes for this UE community 1 and community 1 are distributed for this UE.
After base station 2 receives handover request, for UE distributing radio resource, base station 2 returns Handover Request Acknowledge (Handover Request Acknowledge) signaling to base station 1, it be identification information (C-RNTI), security configuration information and the Target cell that this UE configures is the wireless resource information etc. that UE distributes that this signaling comprises Target cell.
After base station 1 receives Handover Request Acknowledge, send hand off signaling (RRC ConnectionReconfiguration) to UE, comprising Target cell in this signaling is the information such as Radio Network Temporary Identifier (C-RNTI), Radio Resource, security configuration that UE distributes.
When UE receives hand off signaling, stop and the transfer of data of cell-of-origin (community 1) (can realize by hanging (suspend) all radio bearers), start timer T304, UE extract the parameter of distributing for UE Target cell as in Target cell the C-RNTI, security configuration information etc. that are distributed be configured in UE, Target cell is the parameter that described user terminal distributes is correct, and UE can correctly configure.It is synchronous that UE obtains with Target cell, sends switching complete signaling (RRC Connection ReconfigurationComplete) to base station 2.
Then base station 2 is to core net transmit path handover request, connects at new S1 interface so that base station 2 is this UE, and sends the contextual signaling of release UE to base station 1, is the wireless network resource of UE distribution before base station 1 discharges.UE communicates with core net in Target cell.
In method shown in embodiment five, owing to stopping with the transfer of data of cell-of-origin and being synchronized to the consuming time very short of Target cell, for the user of user terminal, be equivalent to communication and do not interrupt, Consumer's Experience can be guaranteed.
The composition structural representation of the processing unit embodiment one of reply Radio Link Failure when Fig. 6 is UE of the present invention switching, as shown in Figure 6, when in this example, UE switches, the processing unit of reply Radio Link Failure comprises receiving element 60, determining unit 61 and processing unit 62, wherein, receiving element 60 is for receiving hand off signaling; It is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes that described hand off signaling comprises described Target cell.Determining unit 61, for before being switched to Target cell, determines that whether current wireless link is failed, trigger processing unit 62 when being; Processing unit 62 directly triggers the reconstruction of wireless spread-spectrum technology rlc layer for not triggering wireless connections to rebuild, be then switched to described Target cell.
As shown in Figure 6, when in this example, UE switches, the processing unit of reply Radio Link Failure also comprises: dispensing unit 63, for when receiving element 60 receives hand off signaling, obtain the information such as the RNTI of this UE described in Target cell, security configuration in hand off signaling, and configure.
Processing unit shown in Fig. 6 is applicable to subscriber terminal side.
Those skilled in the art are to be understood that, when when UE shown in Fig. 6 of the present invention switches, the processing unit of reply Radio Link Failure is switching for realizing shown in previous embodiment one, two reply Radio Link Failure processing method and design, the practical function of each processing unit in Fig. 6 shown device can refer to the associated description in previous embodiment one, two and understands, the function of each unit realizes by the program run on processor, also realizes by corresponding logical circuit.
The composition structural representation of the processing unit embodiment three, four of reply Radio Link Failure when Fig. 7 is UE of the present invention switching, as shown in Figure 7, when in this example, UE switches, the processing unit of reply Radio Link Failure comprises receiving element 70, extraction unit 71, dispensing unit 72, determining unit 73, recovery unit 74 and wireless connections reconstruction unit 75, wherein, receiving element 70 is for receiving hand off signaling; Extraction unit 71 is the parameter that described user terminal distributes for the described Target cell of extracting in described hand off signaling; Dispensing unit 72 is for configuring the parameter of this UE in described Target cell; Determining unit 73, for before being switched to Target cell, determines that whether current wireless link is failed, triggers recovery unit 74 when being; Recovery unit 74 for recovering the parameter configuration in cell-of-origin, and triggers wireless connections reconstruction unit 75; Wireless connections reconstruction unit 75 is rebuild for triggering wireless connections.Wherein, recovery unit 74 recovers the parameter configuration of this UE in cell-of-origin, is specially: the Radio Network Temporary Identifier RNTI that recovery unit 74 security configuration information, measurement configuration information and described cell-of-origin that at least Restorer varieties community is distributed for this UE are distributed.It is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that this UE distributes that this UE described comprises described Target cell in the parameter of Target cell.
Processing unit shown in Fig. 7 is applicable to subscriber terminal side.
Those skilled in the art are to be understood that, when when UE shown in Fig. 7 of the present invention switches, the processing unit of reply Radio Link Failure is cell merge for realizing shown in previous embodiment three, four reply Radio Link Failure processing method and design, the practical function of each processing unit in Fig. 7 shown device can refer to the associated description in previous embodiment three, four and understands, the function of each unit realizes by the program run on processor, also realizes by corresponding logical circuit.
The composition structural representation of the processing unit embodiment three of reply Radio Link Failure when Fig. 8 is UE of the present invention switching, as shown in Figure 8, when this example UE switches, the processing unit of reply Radio Link Failure comprises receiving element 80, stops unit 81, extraction unit 82, dispensing unit 83 and switch unit 84, wherein, receiving element 80 is for receiving hand off signaling; Stop unit 81 for stopping and the transfer of data of cell-of-origin (can realize by hanging all radio bearers).Extraction unit 82 is the parameter that described user terminal distributes for the described Target cell of extracting in described hand off signaling; Dispensing unit 83 is the parameter that described user terminal distributes for configuring described Target cell; Switch unit 84 is for synchronous and be switched to described Target cell.Wherein, described Target cell is that the parameter that described user terminal distributes comprises: described Target cell is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes.
Processing unit shown in Fig. 8 is applicable to subscriber terminal side.
Those skilled in the art are to be understood that, when when UE shown in Fig. 8 of the present invention switches, the processing unit of reply Radio Link Failure is switching for realizing shown in previous embodiment five reply Radio Link Failure processing method and design, the practical function of each processing unit in Fig. 8 shown device can refer to the associated description in previous embodiment one, two and understands, the function of each unit realizes by the program run on processor, also realizes by corresponding logical circuit.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (11)
1. a processing method for reply Radio Link Failure when user terminal switches, is characterized in that, comprising:
After receiving hand off signaling, be switched to Target cell before, user terminal detects the Radio Link Failure with cell-of-origin, and described user terminal does not trigger wireless connections and rebuilds, and triggers the reconstruction of wireless spread-spectrum technology rlc layer, is switched to described Target cell;
Described method also comprises: when user terminal receives hand off signaling, and configuring described Target cell is security configuration information, the RNTI that described user terminal distributes.
2. method according to claim 1, is characterized in that, it is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes that described hand off signaling comprises described Target cell.
3. method according to claim 1, is characterized in that, described user terminal detects current Radio Link Failure and refers to that described user terminal receives the instruction that rlc layer reaches maximum retransmission.
4. a processing method for reply Radio Link Failure when user terminal switches, is characterized in that, comprising:
After receiving hand off signaling, be switched to Target cell before, user terminal detects the Radio Link Failure with cell-of-origin, and described user terminal recovers the parameter configuration in cell-of-origin, triggers wireless connections and rebuilds;
Described user terminal at least Restorer varieties community is security configuration information and the Radio Network Temporary Identifier RNTI of the distribution of described user terminal.
5. method according to claim 4, is characterized in that, when described user terminal receives hand off signaling, extract Target cell described in described hand off signaling be described user terminal distribute parameter and be configured.
6. method according to claim 5, is characterized in that, described Target cell is that the parameter that described user terminal distributes comprises: described Target cell is RNTI, wireless resource information, the security configuration information that described user terminal distributes.
7. method according to claim 4, is characterized in that, described user terminal detects current Radio Link Failure and refers to that described user terminal receives the instruction that rlc layer reaches maximum retransmission.
8. a processing unit for reply Radio Link Failure when user terminal switches, is characterized in that, comprising:
Receiving element, for receiving hand off signaling;
Whether determining unit, for before being switched to Target cell, determine with the wireless link of cell-of-origin failed, trigger processing unit when being; And
Processing unit, directly triggering the reconstruction of wireless spread-spectrum technology rlc layer, being then switched to described Target cell for not triggering wireless connections to rebuild;
Described device also comprises:
Dispensing unit, for when described receiving element receives hand off signaling, configuring described Target cell is the RNTI of described user terminal distribution, the parameter of security configuration information.
9. device according to claim 8, is characterized in that, it is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes that described hand off signaling comprises described Target cell.
10. a processing unit for reply Radio Link Failure when user terminal switches, is characterized in that, comprising:
Receiving element, for receiving hand off signaling;
Extraction unit is the parameter that described user terminal distributes for the described Target cell of extracting in described hand off signaling;
Dispensing unit is the parameter that described user terminal distributes for configuring described Target cell;
Whether determining unit, for before being switched to Target cell, determine with the wireless link of cell-of-origin failed, triggers recovery unit when being;
Recovery unit, for recovering the parameter configuration in cell-of-origin, and triggers wireless connections reconstruction unit; And
Wireless connections reconstruction unit, rebuilds for triggering wireless connections;
Wherein said recovery unit at least Restorer varieties community is security configuration information and the Radio Network Temporary Identifier RNTI of the distribution of described user terminal.
11. devices according to claim 10, it is characterized in that, described Target cell is that the parameter that described user terminal distributes comprises: described Target cell is Radio Network Temporary Identifier RNTI, wireless resource information, the security configuration information that described user terminal distributes.
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| CN200910083023.2A CN101873655B (en) | 2009-04-24 | 2009-04-24 | Method and device for processing radio link failure in the process of switching user terminal |
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| CN103716885B (en) * | 2012-09-28 | 2017-09-29 | 电信科学技术研究院 | A kind of local load bearing management method and equipment |
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| WO2017118012A1 (en) * | 2016-01-07 | 2017-07-13 | 中兴通讯股份有限公司 | Data transmission method, apparatus and system |
| CN107347199B (en) * | 2016-05-06 | 2019-05-21 | 电信科学技术研究院 | It is a kind of switching and its control method, device |
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| CN108024288A (en) * | 2016-11-04 | 2018-05-11 | 电信科学技术研究院 | A kind of information processing method and device |
| CN110012554B (en) * | 2018-01-04 | 2021-03-26 | 维沃移动通信有限公司 | Wireless link recovery method and terminal |
| CN110351805A (en) | 2018-04-04 | 2019-10-18 | 维沃移动通信有限公司 | A kind of connection reconstruction method and relevant device |
| CN110392404B (en) * | 2018-04-20 | 2021-11-16 | 中国移动通信集团设计院有限公司 | Cell switching control method and base station |
| CN110636562B (en) * | 2018-06-21 | 2023-06-27 | 大唐移动通信设备有限公司 | Data processing method and equipment for wireless backhaul path |
| WO2020113367A1 (en) * | 2018-12-03 | 2020-06-11 | Qualcomm Incorporated | Fast recovery from link failure in dual-connectivity systems |
| WO2020118488A1 (en) * | 2018-12-10 | 2020-06-18 | Qualcomm Incorporated | Techniques and apparatuses for conditional handover procedure signaling |
| WO2021068174A1 (en) * | 2019-10-10 | 2021-04-15 | Oppo广东移动通信有限公司 | Cell connection method, electronic device, and storage medium |
| US20230138554A1 (en) * | 2020-04-23 | 2023-05-04 | Nokia Technologies Oy | Apparatus for wireless communications system and user equipment |
| CN113810959B (en) * | 2020-06-15 | 2022-04-29 | 大唐移动通信设备有限公司 | Cell switching method and equipment |
| WO2022027322A1 (en) * | 2020-08-05 | 2022-02-10 | 北京小米移动软件有限公司 | Handover parameter processing method and apparatus, and storage medium |
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