CN102300335A - Method and device for processing wireless link error - Google Patents
Method and device for processing wireless link error Download PDFInfo
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- CN102300335A CN102300335A CN2010102071681A CN201010207168A CN102300335A CN 102300335 A CN102300335 A CN 102300335A CN 2010102071681 A CN2010102071681 A CN 2010102071681A CN 201010207168 A CN201010207168 A CN 201010207168A CN 102300335 A CN102300335 A CN 102300335A
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Abstract
The invention discloses a method and device for processing a wireless link error. The method comprises the following steps of: after judging the occurrence of the wireless link error, a relay node or UE (User Equipment) triggers a base station to perform RRC (Radio Resource Control) connection reconfiguration; and after receiving the RRC connection reconfiguration transmitted by the base station, the relay node or the UE applies configuration parameters in the RRC connection reconfiguration. Due to the adoption of the technical scheme of the invention, a wireless link can return to normal as soon as possible when the wireless link error occurs.
Description
Technical field
The present invention relates to the mobile communication technology field, more specifically, relate to a kind of method and device of handling the Radio Link mistake.
Background technology
In order to satisfy the demand that growing big bandwidth high-speed mobile inserts, third generation partnership project (Third Generation Partnership Projects, abbreviation 3GPP) releases senior Long Term Evolution (LongTerm Evolution-Advanced is called for short LTE-A) standard.The evolution of system has kept the core of LTE to LTE-A for Long Term Evolution (LongTerm Evolution is called for short LTE), adopts a series of technology that frequency domain, spatial domain are expanded on this basis, to reach purposes such as improving the availability of frequency spectrum, increase power system capacity.
Wireless relay (Relay) technology promptly is one of technology among the LTE-A, is intended to the coverage of Extended Cell, reduces the area, dead angle in the communication, balanced load, shift the business of hot zones, saving subscriber equipment (User Equipment is called for short UE) is the transmitting power of terminal.
As shown in Figure 1, increase some new via nodes (Relay-Node is called for short RN) between (Donor-eNB, or be called the host base station) and the UE in original base station, these newly-increased RN and Donor-eNB carry out wireless connections.Wherein, the Radio Link between Donor-eNB and the RN is called back haul link (backhaul link), can represent with the Un interface; Radio Link between RN and the UE is called access link (access link).Downlink data arrives Donor-eNB earlier, passes to RN then, and RN transfers to UE again; Otherwise it is then up.
Via node has between RN and base station (Donor-eNB) under normal operating state, and the relay function that carries out transfer of data between the UE of RN and its management.Particularly, between base station and RN, relay function can comprise and obtains the system information function, measures and the reporting measurement reports function, and handoff functionality carries out the function of transfer of data etc. by Dedicated Control Channel and shared channel.When RN is in normal operating state, can also manage the sub-district that belongs to this RN, manage the UE in this sub-district.Between RN and UE, relay function comprises the system information function that sends RN, the measuring process of management UE, and the handoff procedure of management UE carries out the function etc. of transfer of data by control channel and shared channel between RN and UE.
In back haul link, via node is that the role with domestic consumer's equipment inserts Donor-eNB, after network side is known the identity of via node after by authentication, Donor-eNB can be the specific parameter of this via node configuration, but the Donor-eNB still subscriber equipment of image tube Li Putong equally manages this via node, and via node needs to observe the protocol specification of domestic consumer's equipment in back haul link.When relaying node operate as normal, for a plurality of subscriber equipmenies of its coverage provide service, these subscriber equipmenies are in connection status or idle condition.Yet when back haul link generation Radio Link mistake; detect integrity protection failure or RRC (Radio Resource Control as via node; Radio Resource control) when connecting reconfiguration failure; according to the existing protocol standard; via node can trigger wireless connections and rebuild flow process; comprise: cell selecting; read the Target cell system message; initiate to insert at random; reshuffle Signaling Radio Bearer (Signaling Radio Bearer; be called for short SRB); reconfiguration data radio bearer (Data RadioBearer is called for short DRB), this will make via node can not normally provide service for the subscriber equipment under its covering in long period of time; the telex network that causes probably being in connection status is interrupted, and this is very disadvantageous to user experience.
Summary of the invention
The technical problem that the present invention solves provides a kind of method and device of handling the Radio Link mistake, when the Radio Link mistake takes place, can make wireless link recovery normal in the short as far as possible time.
For solving the problems of the technologies described above, the invention provides a kind of method of handling the Radio Link mistake, described method comprises:
After via node or subscriber equipment (UE) were judged generation Radio Link mistake, triggering base station enforcement Radio Resource control (RRC) connects reshuffled;
Described via node or UE receive RRC that described base station issues connect reshuffle after, use described RRC and connect configuration parameter in reshuffling.
In addition, described via node or UE judge generation Radio Link mistake, are meant: described via node or UE detect and can't observe all or part of configuration information that described base station sends.
In addition, described via node or UE reshuffle by triggering described base station enforcement RRC connection to base station transmission RRC signaling;
Wherein, described RRC signaling comprises: RRC connects reconfiguration request, RRC connects the RRC signaling of reshuffling triggering, RRC connection reconfiguration failure or increasing newly.
In addition, described via node or UE trigger described base station in the following manner and implement RRC and connect and reshuffle:
Described via node or UE do not send response signaling after receiving the configuration that the base station issues;
When response signaling is not received in the given time in described base station, implement the RRC connection and reshuffle.
In addition, described base station is implemented the RRC connection and is reshuffled, and specifically comprise: whether the configuration parameter that the RRC that described base station issues before checking connects in reshuffling has problems, if, after then revising corresponding configuration parameters, amended RRC connected to reshuffle be handed down to described via node or UE; Otherwise, the RRC that issues before connected to reshuffle is handed down to described via node or UE again.
In addition, comprise in the following reason one or more in the described RRC signaling: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the Signaling Radio Bearer of the Data Radio Bearer in the configuration in not existing, dispose in not existing, disposing identifies the configuration that reports in not existing, disposing of measuring object in not existing, disposing and do not exist;
Described base station connects when reshuffling implementing RRC, according to the reason that comprises in the described RRC signaling revise RRC connect reshuffle in after the corresponding configuration parameters, amended RRC connected to reshuffle is handed down to described via node or UE.
In addition, described via node or UE judge generation Radio Link mistake, are meant: described via node or UE detect the integrity protection failure;
Described via node or UE reshuffle by triggering described base station enforcement RRC connection to base station transmission RRC signaling, and comprise the integrity protection failure cause at least in the described RRC signaling; Wherein, described RRC signaling comprises: RRC connects reconfiguration request, RRC connects the RRC signaling of reshuffling triggering, RRC connection reconfiguration failure or increasing newly.
In addition, described base station is implemented the RRC connection and is reshuffled, and specifically comprises:
Described base station issues RRC to described via node or UE and connects and reshuffle, and this RRC connects the configuration parameter that comprises the protection algorithm integrallty of reshuffling described base station in reshuffling.
In addition, after the described RRC signaling that comprises the integrity protection failure cause is received in described base station, issue RRC to described via node or UE and connect when reshuffling, do not adopt protection algorithm integrallty; Perhaps,
Described base station issues RRC to described via node or UE and connects when reshuffling, and adopts predefined value to calculate message integrity identifying code (MAC-I); Described via node receives that described RRC connects when reshuffling, and adopts predefined value to obtain the message integrity identifying code (X-MAC) that calculates; Perhaps,
Described base station and described via node or UE reset counting (COUNT) value that is used to calculate MAC-I and is used to calculate X-MAC respectively.
In addition, described via node or UE are triggering that the base station implements that RRC connects that the number of times of reshuffling reaches or when exceeding predetermined threshold or trigger the base station and implement RRC and connect the time of reshuffling and reach or exceed the scheduled time during length, described via node or UE trigger RRC connection reconstruction flow process or discharge RRC and connect.
The present invention also provides a kind of device of handling the Radio Link mistake, and described device comprises Radio Link error detection module and the configuration parameter application module that is applied among via node or the UE, wherein:
Described Radio Link error detection module is used for, and after the Radio Link mistake takes place for judgement via node or UE, triggers base station enforcement RRC connection and reshuffles;
Described configuration parameter application module is used for, receive RRC that described base station issues connect reshuffle after, use described RRC and connect configuration parameter in reshuffling.
In addition; described Radio Link error detection module is further used for; can't observe all or part of configuration information that described base station sends and/or described via node or UE when detecting the integrity protection failure at described via node or UE, trigger the base station and implement RRC and connect and reshuffle.
In addition, described device comprises also that the RRC in the base station connects and reshuffles module, wherein:
Described Radio Link error detection module is further used for, after receiving the configuration that the base station issues, by not sending response signaling or triggering described base station enforcement RRC connection to base station transmission RRC signaling and reshuffle, wherein, described RRC signaling comprises: RRC connects reconfiguration request, RRC connects the RRC signaling of reshuffling triggering, RRC connection reconfiguration failure or increasing newly;
Described RRC connection is reshuffled the enforcement module and is used for, and when receiving described RRC signaling or not receiving response signaling in the given time, implements the RRC connection and reshuffles.
In addition, described RRC connection is reshuffled the enforcement module and is further used for, and implements the RRC connection in the following manner and reshuffles:
Whether the configuration parameter that the RRC that issues before checking connects in reshuffling has problems, if, then revise corresponding configuration parameters after, amended RRC connected to reshuffle is handed down to described via node or UE; Otherwise, the RRC that issues before connected to reshuffle is handed down to described via node or UE again.
In addition, described Radio Link error detection module is further used for, and comprises in the following reason one or more in described RRC signaling: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the Signaling Radio Bearer of Data Radio Bearer in not existing, dispose in the configuration in not existing, dispose identifies measuring object in not existing, disposing and report that configuration does not exist, integrity protection is failed in not existing, disposing;
Described RRC connection is reshuffled the enforcement module and is further used for, implementing RRC in the following manner connects and to reshuffle: according to the reason that comprises in the described RRC signaling revise RRC connect reshuffle in after the corresponding configuration parameters, amended RRC connected to reshuffle is handed down to described via node or UE.
In addition, described Radio Link error detection module is further used for, triggering that the base station implements that RRC connects that the number of times of reshuffling reaches or when exceeding predetermined threshold or trigger the base station and implement RRC and connect the time of reshuffling and reach or exceed the scheduled time during length, triggering RRC connection reconstruction flow process or discharge RRC and connect.
Adopt technical solution of the present invention, can in the short as far as possible time, make wireless link recovery normal, strengthened the robustness of wireless network, improved user experience.
Description of drawings
Fig. 1 is a schematic network structure of utilizing the wireless relay technology;
Fig. 2 is the process chart of back haul link mistake in the embodiment of the invention one;
Fig. 3 is the process chart of back haul link mistake in the embodiment of the invention two;
Fig. 4 is the process chart of Radio Link mistake in the embodiment of the invention three;
Fig. 5 is the process chart of back haul link mistake in the embodiment of the invention four.
Embodiment
The invention provides a kind of method of handling the Radio Link mistake, be applied to the LTE-A system, specifically adopt following technical scheme:
After via node or subscriber equipment are judged generation Radio Link mistake, trigger base station enforcement RRC connection and reshuffle;
Via node or subscriber equipment receive RRC that the base station issues connect reshuffle after, use described RRC and connect configuration parameter in reshuffling.
Further, described Radio Link mistake comprises a kind of or whole in the following mistake:
Described via node or UE can't observe all or part of configuration information that described base station sends;
Described via node or UE detect the integrity protection failure.
Further, described base station is implemented the RRC connection and is reshuffled, and comprising:
Whether the configuration parameter that the RRC that described base station issues before checking connects in reshuffling has problems, if, then revise corresponding configuration parameters after, amended RRC connected to reshuffle is handed down to described via node or UE; Otherwise, the RRC that issues before connected to reshuffle is handed down to described via node or UE again.
Further, described via node or subscriber equipment are reshuffled by triggering described base station enforcement RRC connection to base station transmission RRC signaling.
Perhaps, described via node or subscriber equipment trigger described base station in the following manner and implement RRC and connect and reshuffle:
Described via node or UE do not send response signaling after receiving the configuration that the base station issues;
When described base station is not received response in the given time, implement the RRC connection and reshuffle.
Further, described via node or UE comprise to base station transmission RRC signaling: RRC connects reconfiguration request, RRC connects other RRC signalings of reshuffling triggering, RRC connection reconfiguration failure or increasing newly.
Preferably, comprise in the following reason one or more in the described RRC signaling: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measuring object of the measurement sign of the Signaling Radio Bearer of the Data Radio Bearer in the configuration in not existing, dispose in not existing, dispose in not existing, dispose reports that configuration does not exist, integrity protection is failed, integrity protection is failed and the wireless access bearing sign of correspondence in not existing, disposing.
Further, the base station connects when reshuffling implementing RRC, revise corresponding configuration parameters according to the reason that comprises in the described RRC signaling after, amended RRC connected to reshuffle is handed down to described via node or UE.
Preferably, described via node or UE are triggering that the base station implements that RRC connects that the number of times of reshuffling reaches or when exceeding predetermined threshold or trigger the base station and implement RRC and connect the time of reshuffling and reach or exceed the scheduled time during length, described via node or UE trigger RRC connection reconstruction flow process or discharge RRC and connect.
Need to prove that the base station is implemented RRC and connected to reshuffle and be meant that the base station sends RRC to via node or UE and connects and reshuffle signaling among the present invention, comprises the parameter of base station for this via node or UE configuration (or reshuffling) in this signaling.
Be described in further detail below with reference to the enforcement of drawings and the specific embodiments technical solution of the present invention.
Embodiment one
Via node inserts the Donor-eNB jurisdiction district, be in normal operating state, at back haul link, Donor-eNB is as common subscriber equipment supervisory relay node, be its increase, revise, or the configuration of deletion DRB, be its increase, revise, or configuration is measured in deletion, be its foundation or release semi-persistent scheduling (Semi-Persistent Scheduling, be called for short SPS), be the configuration (MAC-MainConfig) of its configuration MAC layer and the configuration (physicalConfigDedicated) of physical layer special use etc., Donor-eNB reshuffles by the RRC connection and realizes this part function usually.Above-mentioned deploy content may send in a configuration signal and also may divide many configuration signals to send.
The judgement of back haul link mistake and processing procedure comprise the steps: referring to Fig. 2
Step 210, when RRC that the relaying node receives the base station connect reshuffle signaling after, can not observe all or part of configuration (unable to comply with (part of) the configuration) that the base station sends if judge this via node, then think and the base station between back haul link generation Radio Link mistake, via node triggers the base station and implements RRC and connect and reshuffle.Simultaneously via node starts a counter, is set to N (N can be since 0 value, also can since 1 value), and this counter represents that via node has triggered the number of times information that the RRC connection is reshuffled.If N is since 0 value, it is N+1 time that via node triggering RRC connects the number of times of reshuffling.
The part that sends when the base station disposes when errorless, and via node can use this part that does not make a mistake configuration; Perhaps via node does not use this to reshuffle configuration parameters all in the signaling behind the Radio Link Failure of judging back haul link.If via node can be observed the configuration of base station, then carry out according to normal flow.
Via node one of can be in the following ways triggers the base station to be implemented RRC and connects and reshuffle:
1, via node connects to reshuffle and finishes signaling (RRCConnection Reconfiguration Complete) this configuration of informing base station and make a mistake by not sending response signaling such as RRC, this moment, the base station was configured to not receive in the given time response, then give tacit consent to the configuration existing problems that this time issue, the configuration parameter of this via node need be reshuffled in the base station;
2, via node is directly implemented to reshuffle by RRC signaling triggering base station, and concrete RRC signaling can be: via node sends RRC connection reconfiguration request, triggering is reshuffled in the RRC connection or RRC connects reconfiguration failure.Preferably, can carry the reason of this configuration failure in the RRC signaling, the reason of concrete configuration failure can be one or more in the following reason: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the SRB of the DRB in the configuration in not existing, dispose in not existing, disposing identifies the configuration (reportingconfiguration) that reports in not existing, disposing of measuring object in not existing, disposing and do not exist etc.
Step 220, the base station sends the RRC connection to via node and reshuffles signaling;
In this step, the RRC that the base station sends to this via node before knowing connects to reshuffle and makes a mistake, and then checks the problem that the parameter in reshuffling before own exists, and revises configuration parameter wherein, sends new configuration parameter to via node afterwards.
If step 210 via node comprises the reason of configuration failure in the RRC signaling, then configuration parameter corresponding can directly be revised according to its reason in the base station, connects to reshuffle to via node by RRC to resend new configuration parameter.Need to prove, may make parameter generating mistake wherein in the propagated process, think that the parameter of configuration is correct, be likely in the propagated process mistake has taken place that the base station can send configuration parameter once more if the base station is checked.
For example, sometime, the base station connects by RRC reshuffles the signaling that sends increase measurement task to via node, comprising measuring sign, measure the measuring object of sign indication and related report configuration, since this measurement task correspondence report not definition of configuration (this report configuration not deleted again after definition or the definition), via node can not be observed this configuration, via node sends RRC to the base station and connects the reconfiguration request signaling, the information that comprises configuration failure therein, the reconfiguration failure of this newly-increased measurement task of informing base station.After the information of base station acquisition failure, no longer send identical configuration information, and detect to via node transmission RRC connection and reshuffle the information that comprises in the signaling, revise error configurations wherein, send new configuration information to via node once more to via node.
After step 230, via node received that signaling is reshuffled in the RRC connection of sending the base station, can relay node judges observe configuration wherein fully.If forward step 240 to; Otherwise forward step 250 to.
Step 240, via node are used RRC and are connected configuration in reshuffling, reset or stop the counter that starts in the step 210 or delete described counter.
Step 250, if via node still can not be observed part or all of configuration wherein, described counter adds 1, and this counter reaches and triggers the thresholding of reshuffling, and via node triggers RRC connection reconstruction flow process or the current RRC connection of the direct release of via node enters idle condition.
In the present embodiment, via node prevents to trigger and reshuffles flow process and endless loop occurs by counter is set.Only allow via node to trigger a RRC connection in the present embodiment and reshuffle flow process, can not continuous several times triggering RRC connection reshuffle.In actual applications, network can allow the via node continuous trigger repeatedly RRC connect and to reshuffle.Can be configured to 3 times or repeatedly such as the thresholding of this counter, at this moment, have only the number of times of reshuffling when relaying node continuous trigger RRC connection to reach the thresholding of configuration, via node just can trigger RRC connection reconstruction flow process or directly discharge current RRC connection and enter idle condition.
In the present embodiment, via node triggering RRC connects the thresholding of reshuffling and disposes by the predefined mode of agreement.
Embodiment two
Via node inserts the sub-district under the Donor-eNB, is in normal operating state.Via node is monitored the signal that the base station sends in back haul link, the base station has disposed cryptographic algorithm (Ciphering Algorithm) and protection algorithm integrallty (Integrity Protection Algorithm) for this via node.At back haul link; as receiving terminal; via node needs calculated data bag PDU (Protocol Data Unit; protocol Data Unit) X-MAC (Computed MAC-I; the message integrity identifying code that calculates), if the MAC-I (Message AuthenticationCode for Integrity, message integrity identifying code) in the corresponding data bag of X-MAC that calculates and reception is consistent; prove that then integrity protection is successful, otherwise proof is unsuccessful.
By the parameter of via node or terminal maintenance calculations X-MAC, comprise counter COUNT value, directioin parameter (DIRECTION), radio bearer sign (BEARER), key (Key is KRRCint) etc.Wherein the COUNT value is made of HFN (Hyper Frame Number, Hyper Frame Number) and PDCP SN (PacketData Convergence Protocol Sequence Number, packet data convergence protocol sequence number).
The judgement of the back haul link mistake of present embodiment and processing procedure comprise the steps: referring to Fig. 3
Step 310, the relay node judges Radio Link makes a mistake, and triggers base station enforcement RRC connection by the RRC signaling and reshuffles, and comprises the reason of integrity protection failure in this RRC signaling;
After via node receives packet; judge data integrity protection's failure that the base station issues according to the content of packet; then think and the base station between back haul link generation Radio Link mistake, via node receives that whenever packet carries out the inspection that a time whether the data integrity protection fails.The X-MAC of the packet that calculates when relay node judges is consistent with the MAC-I of reception, then thinks the data integrity protection successfully, otherwise thinks failure.
Via node triggers the RRC signaling of implementing to reshuffle in the base station: triggering is reshuffled in via node transmission RRC connection reconfiguration request, RRC connection, RRC connects reconfiguration failure, perhaps other RRC signaling.
Preferably, in this RRC signaling, except that the reason that comprises the integrity protection failure, can also comprise the identification information of the corresponding RAB of integrity protection failure.Because this moment, up link was no problem, via node can be continued to use original protection algorithm integrallty and send the RRC signaling to the base station.
In addition, preferably, in this step, via node will start a counter, be set to N (N can be since 0 value, also can since 1 value), and this counter represents that via node has triggered RRC and connected the number of times information of reshuffling.If N is since 0 value, it is N+1 time that via node triggering RRC connects the number of times of reshuffling.
Step 320, the base station sends the RRC connection to via node and reshuffles signaling;
The base station is after knowing the integrity protection failure; return the new signaling of reshuffling to via node; the configuration parameter that wherein can comprise the protection algorithm integrallty of reshuffling; as the COUNT value of reseting, perhaps new protection algorithm integrallty (base station reconfigures Integrity Protection Algorithm) etc.Need to prove, because via node has detected the integrity protection failure of down link, in order to guarantee that step RRC connects the accurate transmission of reshuffling signaling, the base station when calculating the MAC-I of this signaling and via node when calculating the X-MAC of this signaling, parameter wherein such as counter COUNT value, directioin parameter, radio bearer sign, key (KRRCint) all adopt predefined value; Perhaps, the COUNT value is reseted on base station and via node both sides simultaneously, at this moment, then need not notify via node these parameters by the base station; Perhaps, article one RRC signaling after via node triggering base station enforcement RRC connection is reshuffled does not adopt protection algorithm integrallty.
After step 330, via node received that signaling is reshuffled in the RRC connection, can relay node judges observe configuration wherein fully, if then forward step 340 to; Otherwise forward step 350 to;
Step 340, via node are used RRC and are connected configuration in reshuffling, reset or stop the counter that starts in the step 310 or delete described counter;
Step 350, if via node still can not be observed part or all of configuration wherein, described counter adds 1, and this counter reaches and triggers the thresholding of reshuffling, and via node triggers RRC connection reconstruction flow process or the current RRC connection of the direct release of via node enters idle condition.
In the present embodiment, via node prevents to trigger and reshuffles flow process and endless loop occurs by counter is set.Only allow via node to trigger a RRC connection in the present embodiment and reshuffle flow process, can not continuous several times triggering RRC connection reshuffle.Via node triggering RRC connects the thresholding of reshuffling and disposes by the predefined mode of agreement.
Embodiment three
UE is in connection status in the jurisdiction district, base station, the handling process of UE after detecting the Radio Link mistake as shown in Figure 4:
Step 410, UE count initialized device.Present embodiment is represented this counter with T0;
Particularly, UE can be initialized as 0 with T0, or-1.
Step 420, UE detects all or part of configuration or the UE that can not observe the base station transmission and detects the integrity protection failure, and UE judges whether T0 reaches thresholding, if, execution in step 470; Otherwise, execution in step 430;
Step 430, UE triggers base station enforcement RRC connection by the RRC signaling and reshuffles, and simultaneously T0 is added 1;
Concrete RRC signaling can be: RRC connects reconfiguration request, the RRC connection is reshuffled and triggered or RRC connection reconfiguration failure.
Preferably; can carry in the RRC signaling and trigger the reason reshuffle, this reason can be following one or more: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the SRB of the DRB in the configuration in not existing, dispose in not existing, dispose identifies measuring object in not existing, disposing and report that configuration does not exist, integrity protection is failed in not existing, disposing.
Step 440, the base station sends the RRC connection to UE and reshuffles signaling;
Step 450, after UE received that signaling is reshuffled in the RRC connection, can judgement observe configuration wherein fully, if, execution in step 460, otherwise execution in step 420;
Step 460, UE uses RRC and connects the configuration parameter of reshuffling in the signaling, and returns RRC to the base station and connect to reshuffle and finish signaling;
Step 470, UE count initialized device or deletion counter, UE triggering wireless connections reconstruction flow process or UE directly discharge the RRC connection and forward Idle state to.
The thresholding of counter can adopt the predefined mode of agreement to dispose in the present embodiment, can be the UE configuration by the RRC signaling by the base station also.
By the described method of present embodiment, UE can be when detecting the Radio Link mistake, can trigger the base station immediately implements RRC to it and connects and reshuffle, avoiding directly triggering communication disruption that the RRC connection reconstruction causes or the release that causes whole connection (rebuilds flow process and can not guarantee that UE can recover and being connected of network, may cause UE to enter Idle state), strengthened user experience.By setting counter, make handling process of the present invention effectively to implement simultaneously.
Although present embodiment has been described the handling process of UE when the Radio Link mistake, the present invention is suitable equally for via node, as long as the role exchange of UE and via node.
Embodiment four
Via node access base station jurisdiction district is in normal operating state.The handling process of via node after detecting the Radio Link mistake be as shown in Figure 5:
Step 510, via node initialization timing device;
Step 520, via node detect all or part of configuration or the via node that can not observe the base station transmission and detect the integrity protection failure, and via node starts timer;
Step 530, this timer of relay node judges whether exceed the time limit (Expire), if execution in step 580, otherwise execution in step 540;
Step 540, via node triggers base station enforcement RRC connection by the RRC signaling and reshuffles;
Concrete RRC signaling can be: RRC connects reconfiguration request, the RRC connection is reshuffled and triggered or RRC connection reconfiguration failure.
Preferably; can carry in the RRC signaling and trigger the reason reshuffle, this reason can be following one or more: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the SRB of the DRB in the configuration in not existing, dispose in not existing, dispose identifies measuring object in not existing, disposing and report that configuration does not exist, integrity protection is failed in not existing, disposing.
Step 550, the base station sends the RRC connection to via node and reshuffles signaling;
After step 560, via node received that signaling is reshuffled in the RRC connection, can judgement observe configuration wherein fully.If, execution in step 570, otherwise execution in step 530;
Step 570, via node are used RRC and are connected the configuration parameter of reshuffling in the signaling, and return RRC to the base station and connect to reshuffle and finish signaling;
Step 580, via node initialization timing device or delete this timer, via node trigger wireless connections and rebuild flow process or via node and directly discharge RRC and connect and forward Idle state to.
The length of timer can adopt the predefined mode of agreement to dispose in the present embodiment, can be the via node configuration by the RRC signaling by the base station also.The present invention is suitable equally for UE, as long as the role exchange of UE and via node.
Correspondingly, also provide a kind of device (not shown) of handling the Radio Link mistake in the embodiment of the invention, this device mainly comprises Radio Link error detection module and the configuration parameter application module that can be applicable among via node or the UE, wherein:
Described Radio Link error detection module is used for, and after the Radio Link mistake takes place for judgement via node or UE, triggers base station enforcement RRC connection and reshuffles;
Described configuration parameter application module is used for, receive RRC that described base station issues connect reshuffle after, use described RRC and connect configuration parameter in reshuffling.
In addition; described Radio Link error detection module is further used for; can't observe all or part of configuration information that described base station sends and/or described via node or UE when detecting the integrity protection failure at described via node or UE, trigger the base station and implement RRC and connect and reshuffle.
In addition, described device comprises also that the RRC in the base station connects and reshuffles module, wherein:
Described Radio Link error detection module is further used for, after receiving the configuration that the base station issues, by not sending response signaling or triggering described base station enforcement RRC connection to base station transmission RRC signaling and reshuffle, wherein, described RRC signaling comprises: RRC connects reconfiguration request, RRC connects the RRC signaling of reshuffling triggering, RRC connection reconfiguration failure or increasing newly;
Described RRC connection is reshuffled the enforcement module and is used for, and when receiving described RRC signaling or not receiving response signaling in the given time, implements the RRC connection and reshuffles.
In addition, described RRC connection is reshuffled the enforcement module and is further used for, and implements the RRC connection in the following manner and reshuffles:
Whether the configuration parameter that the RRC that issues before checking connects in reshuffling has problems, if, then revise corresponding configuration parameters after, amended RRC connected to reshuffle is handed down to described via node or UE; Otherwise, the RRC that issues before connected to reshuffle is handed down to described via node or UE again.
In addition, described Radio Link error detection module is further used for, and comprises in the following reason one or more in described RRC signaling: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the Signaling Radio Bearer of Data Radio Bearer in not existing, dispose in the configuration in not existing, dispose identifies measuring object in not existing, disposing and report that configuration does not exist, integrity protection is failed in not existing, disposing;
Described RRC connection is reshuffled the enforcement module and is further used for, implementing RRC in the following manner connects and to reshuffle: according to the reason that comprises in the described RRC signaling revise RRC connect reshuffle in after the corresponding configuration parameters, amended RRC connected to reshuffle is handed down to described via node or UE.
In addition, described Radio Link error detection module is further used for, triggering that the base station implements that RRC connects that the number of times of reshuffling reaches or when exceeding predetermined threshold or trigger the base station and implement RRC and connect the time of reshuffling and reach or exceed the scheduled time during length, triggering RRC connection reconstruction flow process or discharge RRC and connect.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
The above only is the preferred embodiment of the present invention; be not limited to the present invention; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (16)
1. a method of handling the Radio Link mistake is characterized in that, described method comprises:
After via node or subscriber equipment (UE) were judged generation Radio Link mistake, triggering base station enforcement Radio Resource control (RRC) connects reshuffled;
Described via node or UE receive RRC that described base station issues connect reshuffle after, use described RRC and connect configuration parameter in reshuffling.
2. the method for claim 1 is characterized in that,
Described via node or UE judge generation Radio Link mistake, are meant: described via node or UE detect and can't observe all or part of configuration information that described base station sends.
3. method as claimed in claim 2 is characterized in that,
Described via node or UE reshuffle by triggering described base station enforcement RRC connection to base station transmission RRC signaling;
Wherein, described RRC signaling comprises: RRC connects reconfiguration request, RRC connects the RRC signaling of reshuffling triggering, RRC connection reconfiguration failure or increasing newly.
4. method as claimed in claim 2 is characterized in that,
Described via node or UE trigger described base station enforcement RRC connection in the following manner and reshuffle:
Described via node or UE do not send response signaling after receiving the configuration that the base station issues;
When response signaling is not received in the given time in described base station, implement the RRC connection and reshuffle.
5. as claim 2,3 or 4 described methods, it is characterized in that,
Described base station is implemented the RRC connection and is reshuffled, specifically comprise: whether the configuration parameter that the RRC that described base station issues before checking connects in reshuffling has problems, if, then revise corresponding configuration parameters after, amended RRC connected to reshuffle is handed down to described via node or UE; Otherwise, the RRC that issues before connected to reshuffle is handed down to described via node or UE again.
6. method as claimed in claim 3 is characterized in that,
Comprise in the following reason one or more in the described RRC signaling: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the Signaling Radio Bearer of the Data Radio Bearer in the configuration in not existing, dispose in not existing, disposing identifies the configuration that reports in not existing, disposing of measuring object in not existing, disposing and do not exist;
Described base station connects when reshuffling implementing RRC, according to the reason that comprises in the described RRC signaling revise RRC connect reshuffle in after the corresponding configuration parameters, amended RRC connected to reshuffle is handed down to described via node or UE.
7. the method for claim 1 is characterized in that,
Described via node or UE judge generation Radio Link mistake, are meant: described via node or UE detect the integrity protection failure;
Described via node or UE reshuffle by triggering described base station enforcement RRC connection to base station transmission RRC signaling, and comprise the integrity protection failure cause at least in the described RRC signaling; Wherein, described RRC signaling comprises: RRC connects reconfiguration request, RRC connects the RRC signaling of reshuffling triggering, RRC connection reconfiguration failure or increasing newly.
8. method as claimed in claim 7 is characterized in that,
Described base station is implemented the RRC connection and is reshuffled, and specifically comprises:
Described base station issues RRC to described via node or UE and connects and reshuffle, and this RRC connects the configuration parameter that comprises the protection algorithm integrallty of reshuffling described base station in reshuffling.
9. method as claimed in claim 8 is characterized in that,
After the described RRC signaling that comprises the integrity protection failure cause is received in described base station, issue RRC to described via node or UE and connect when reshuffling, do not adopt protection algorithm integrallty; Perhaps,
Described base station issues RRC to described via node or UE and connects when reshuffling, and adopts predefined value to calculate message integrity identifying code (MAC-I); Described via node receives that described RRC connects when reshuffling, and adopts predefined value to obtain the message integrity identifying code (X-MAC) that calculates; Perhaps,
Described base station and described via node or UE reset counting (COUNT) value that is used to calculate MAC-I and is used to calculate X-MAC respectively.
10. as claim 1,3,4,6,7,8 or 9 described any one methods, it is characterized in that,
Described via node or UE are triggering that the base station implements that RRC connects that the number of times of reshuffling reaches or when exceeding predetermined threshold or trigger the base station and implement RRC and connect the time of reshuffling and reach or exceed the scheduled time during length, described via node or UE trigger RRC connection reconstruction flow process or discharge RRC and connect.
11. a device of handling the Radio Link mistake is characterized in that, described device comprises Radio Link error detection module and the configuration parameter application module that is applied among via node or the UE, wherein:
Described Radio Link error detection module is used for, and after the Radio Link mistake takes place for judgement via node or UE, triggers base station enforcement RRC connection and reshuffles;
Described configuration parameter application module is used for, receive RRC that described base station issues connect reshuffle after, use described RRC and connect configuration parameter in reshuffling.
12. device as claimed in claim 11 is characterized in that,
Described Radio Link error detection module is further used for; can't observe all or part of configuration information that described base station sends and/or described via node or UE when detecting the integrity protection failure at described via node or UE, trigger the base station and implement RRC and connect and reshuffle.
13. device as claimed in claim 12 is characterized in that, described device comprises also that the RRC in the base station connects and reshuffles module, wherein:
Described Radio Link error detection module is further used for, after receiving the configuration that the base station issues, by not sending response signaling or triggering described base station enforcement RRC connection to base station transmission RRC signaling and reshuffle, wherein, described RRC signaling comprises: RRC connects reconfiguration request, RRC connects the RRC signaling of reshuffling triggering, RRC connection reconfiguration failure or increasing newly;
Described RRC connection is reshuffled the enforcement module and is used for, and when receiving described RRC signaling or not receiving response signaling in the given time, implements the RRC connection and reshuffles.
14. device as claimed in claim 13 is characterized in that,
Described RRC connection is reshuffled the enforcement module and is further used for, and implements the RRC connection in the following manner and reshuffles:
Whether the configuration parameter that the RRC that issues before checking connects in reshuffling has problems, if, then revise corresponding configuration parameters after, amended RRC connected to reshuffle is handed down to described via node or UE; Otherwise, the RRC that issues before connected to reshuffle is handed down to described via node or UE again.
15. device as claimed in claim 13 is characterized in that,
Described Radio Link error detection module is further used for, and comprises in the following reason one or more in described RRC signaling: the parameter of configuration is incorrect, the form of configuration information is incorrect, the measurement of the Signaling Radio Bearer of Data Radio Bearer in not existing, dispose in the configuration in not existing, dispose identifies measuring object in not existing, disposing and report that configuration does not exist, integrity protection is failed in not existing, disposing;
Described RRC connection is reshuffled the enforcement module and is further used for, implementing RRC in the following manner connects and to reshuffle: according to the reason that comprises in the described RRC signaling revise RRC connect reshuffle in after the corresponding configuration parameters, amended RRC connected to reshuffle is handed down to described via node or UE.
16. as claim 11,12,13,14 or 15 described any one devices, it is characterized in that,
Described Radio Link error detection module is further used for, triggering that the base station implements that RRC connects that the number of times of reshuffling reaches or when exceeding predetermined threshold or trigger the base station and implement RRC and connect the time of reshuffling and reach or exceed the scheduled time during length, triggering RRC connection reconstruction flow process or discharge RRC and connect.
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