CN102026404A - System and method for processing radio resource control connection reconfiguration in long term evolution (LTE) system - Google Patents

Abstract

The present invention relates to a system and method for processing radio resource control connection reconfiguration failure. According to the specific cause of radio resource control connection reconfiguration failure, a specific failure cause value is added at the UE side, and then the failure cause value is encapsulated into the radio resource The control connection re-establishment request message is sent to the network (E-UTRAN). The network receives the RRC connection re-establishment request message and learns that the RRC connection reconfiguration process fails, and parses the RRC connection re-establishment request message sealed According to the specific failure cause value of the UE, a judgment process is performed to initiate RRC connection reconfiguration or RRC connection re-establishment according to the agreed rules of the UE. By adopting the technology of the invention, the implementation complexity of the radio resource control connection reconfiguration process is reduced, and the connection efficiency is improved.

Description

Radio resource control connection reconfiguration processing system and method in LTE system

technical field

The present invention relates to the field of wireless communication, in particular to a radio resource control (RRC, Radio Resource Control) connection reconfiguration technology in a long-term evolution (LTE, Long Term Evolution).

Background technique

A mobile communication system full of vitality can be continuously enhanced with the increase of human needs, providing users with higher data rates, and providing networks with wider coverage and greater capacity. The main performance goals of 3GPP LTE include: providing a peak rate of downlink 100Mbps and uplink 50Mbps in a 20MHz spectrum bandwidth; improving cell edge user performance; increasing cell capacity; reducing system delay — one-way transmission delay within the user plane is less than 5ms, The transition time of the control plane from the sleep state to the active state is less than 50ms, and the transition time from the resident state to the active state is less than 100ms; it supports cell coverage with a radius of 100Km; it can provide access services greater than 100kbps for 350Km/h high-speed mobile users; Supports paired or unpaired spectrum, and can flexibly configure various bandwidths from 1.25 MHz to 20MHz.

Literature (Zhao Xunwei, 3GPP Long Term Evolution (LTE) System Architecture and Technical Specifications, 2010:181-182.), Chinese patent application: A method and system for processing radio resource control connection reconfiguration failure (application number: 200910091927.X) , LTE RRC connection re-establishment request method, cause value setting method and terminal (application number: 200810142499.4).

It is disclosed that the RRC connection reconfiguration process of 3GPP LTE is: UE (user terminal) in the connected state, if the RRC connection needs to be modified during the service process, the network end (E-UTRAN) sends an RRC connection reconfiguration message to the UE ; The UE performs processing according to the relevant fields in the RRC connection reconfiguration message; if the RRC connection reconfiguration message does not include mobilityControlInformation (mobility control information), and the UE can follow the configuration in the message, perform the following operations.

Judging whether the RRC connection reconfiguration message received by the UE is the first RRC connection reconfiguration message after the RRC connection reestablishment process is successfully completed. If yes, then perform the following operations in sequence.

Rebuild SRB2 (System Information Block 2) (Signal Radio Bearer Type 2) and all established DRB (Data Radio Bearer) PDCP (Packet Data Convergence Protocol) (Packet Data Convergence Protocol) and RLC (Radio Link Control) (Radio Link Control); UE performs the following actions in sequence according to the configuration items contained in the RRC connection reconfiguration message:

If it contains measurement-related information (measConfig), perform measurement configuration modification; if it contains mobility control information (MobilityControlInfo), perform handover; if it contains non-access stratum-specific information (dedicatedInfoNASList), pass this field to the upper layer; if it contains Radio resource configuration (radioResourceConfigDedicated), reconfigure the radio bearer, data radio bearer, transmission channel and physical channel according to the message content; if it includes the security configuration (securityConfigHO) in the handover process, execute the handover; restart the suspended SRB2 and DRB.

If the RRC connection reconfiguration message received by the UE is not the first RRC connection reconfiguration message after the RRC connection reestablishment process is successfully completed, and the RRC connection reconfiguration message includes radioResourceConfigDedicated at this time, (radio resource control exclusive) execute radio Resource reconfiguration process. As shown in FIG. 1 , it is a schematic diagram of the implementation flow of successful reconfiguration in the process of RRC connection reconfiguration in the prior art.

The UE submits a RRCConnectionReconfigurationComplete (RRC connection reconfiguration complete) message to the underlying transport using the new configuration. The purpose of the RRC connection reconfiguration process is to modify the RRC connection, including establishing, modifying or releasing RBs, performing handover, establishing, modifying or releasing measurements.

If the five reconfiguration items in the RRC connection reconfiguration can be successfully executed, the UE will send an RRC connection reconfiguration complete message to the E-UTRAN (Evolved Terrestrial Radio Access Network) to complete the RRC connection reconfiguration;

Conversely, if any of the above five items is abnormal during execution, the RRC connection reconfiguration process fails.

When the RRC connection reconfiguration fails, the user equipment sends the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message to the network side using the configuration of the current parameters that have been executed, and the network side receives the RRC connection reestablishment request message and knows that the RRC connection reestablishment request message is The configuration process failed.

In the configuration reset mode, when one of the configuration items is abnormal and the RRC connection reconfiguration process fails, the configuration before receiving the RRC connection reconfiguration message must be restored. If the reconfiguration failure is caused by an abnormality in the measConfig (measurement configuration) configuration item, dedicatedInfoNASList configuration item, and radioResourceConfigDedicated (radio resource configuration-specific) configuration item, the UE does not notify the network through a reconfiguration failure message, but through RRC Reconfiguration Failure (reconfiguration failure) is used to indicate the reconfiguration failure in the RRC connection reestablishment request message. When the network receives the RRC connection reestablishment request message, it judges that the failure reason is reconfigurationFailure, and then executes RRC connection reestablishment. If the reconfiguration fails due to the abnormality of the mobilityControlInfo (mobility control information) configuration item and the securityConfig configuration item, and the UE side RRC connection reconfiguration fails, the network side is not notified by the reconfiguration failure message, but by the RRC connection reestablishment request message To tell the network side, and use handoverFailure (handover failure) in the re-establishment reason in the RRC connection re-establishment request message. The connection is reestablished. If the RRC connection re-establishment is required due to other reasons, the network sends an RRC connection re-establishment message to the UE (user terminal), and the UE (user terminal) executes the RRC connection re-establishment process.

In the prior art solution, no matter what kind of reconfiguration item abnormality causes the reconfiguration failure, it is represented by reconfigurationFailure (reconfiguration failure), and is encapsulated into the RRC connection reestablishment reason in the RRC connection reestablishment request message, The network end receives the RRC connection re-establishment request message, learns that the RRC connection reconfiguration process fails, and parses the message, but the subsequent processing action taken is RRC connection re-establishment. When any parameter in the RRC connection reconfiguration message is abnormal, it needs to restore to the configuration before receiving the RRC connection reconfiguration message, resulting in cumbersome operations. It does not meet the requirements of network-initiated reconfiguration operations. Analyzing the above failure process, it can be known that the processing solution in the prior art has problems such as many parameters, cumbersome operation, and complicated process in the subsequent processing actions of the RRC connection reconfiguration process.

Contents of the invention

In view of the above-mentioned technical problems existing in the RRC connection reconfiguration of prior art 3GPP LTE, the technical solution of the present invention to solve the above-mentioned technical problems is to provide a kind of fast processing method under the situation of radio resource control connection reconfiguration failure for LTE system. This method is aimed at the UE receiving the RRC connection reconfiguration message and performing the configuration before the reconfiguration abnormality, avoiding the need to restore to the RRC connection when any parameter in the RRC connection reconfiguration message is abnormal in the prior art. The configuration before reconfiguring the message leads to cumbersome operations.

The present invention is based on the fact that the RRC connection reconfiguration failure of the UE side notifies the network side through the RRC connection re-establishment request message, and by adding a bit used to describe the re-establishment reason in the message sent by the UE side, when the RRC connection reconfiguration failure occurs, the setting of the UE side The unit sets corresponding corresponding values at both ends according to the feedback failure reason, and after the network end receives the RRC connection reestablishment request message, the judgment processing unit at the network end performs judgment processing on the failure cause value.

In order to achieve the above object, the present invention adopts the following technical solutions: when the radio resource control connection reconfiguration fails, the user equipment will notify the network side of the RRC connection at the UE side through the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message according to the configuration execution status of the current parameters. The reconfiguration process failed. Specifically provided is a radio resource control connection reconfiguration failure processing system, including a user end and a network end, characterized in that the user end UE receiving unit receives the RRC connection reconfiguration message from the network side; the user end execution unit executes the RRC Connection reconfiguration message, according to the current parameters in the RRC connection reconfiguration message, choose to maintain the current configuration or restore to the configuration before the UE receives the RRC connection reconfiguration message, and execute the parameters in the RRC connection reconfiguration message sequentially; In case of abnormality, the user terminal setting unit of the UE maintains the currently configured parameters, and encapsulates the abnormal cause value into the RRC connection reestablishment message; the user terminal sending unit sends the RRC connection reconfiguration message encapsulated with the failure cause value to the network end; the user The terminal release unit releases the relevant radio resources of the RRC connection, and directly returns to the idle state; the network terminal receives the radio resource control connection re-establishment request message, executes a judgment according to the sequence execution agreement and the failure cause value, and sends the RRC connection reconfiguration message or The RRC connection reestablishment message is sent to the UE.

When the physical layer parameter configuration of the UE fails, or the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message fails to be sent due to exceeding the maximum number of retransmissions, the UE performs cell selection when idle and camps on the corresponding cell.

The present invention also provides a method for processing radio resource control connection reconfiguration failure in an LTE system, adding a bit to the RRC connection reconfiguration request message to indicate the cause of failure, and sending the RRC connection reconfiguration message to User terminal: The user terminal execution unit sequentially executes the parameters in the RRC connection reconfiguration request message; when the reconfiguration is successful, the UE sends the RRC connection reconfiguration completion message to the network side; if the reconfiguration of a parameter fails, it will fail The cause value is encapsulated into the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message and sent to the network side; after receiving the above message, the network side performs judgment processing according to the parameters executed in sequence and the failure cause value; and sends the judgment result to the user end , controlling the UE to perform a handover process or perform an RRC connection reestablishment process.

The execution unit of the user end executes each parameter in the RRC connection reconfiguration message sequentially; when an abnormality occurs in a certain configuration item in the RRC connection reconfiguration message, the UE maintains the current configuration and does not need to restore to the one before receiving the RRC connection reconfiguration message. Configure, and set the failure reason value according to the specific reason operation, encapsulate the failure reason value into the RRC connection reconfiguration message, and the UE performs the following actions in sequence according to the configuration items contained in the RRC connection reconfiguration message: If the RRC connection reconfiguration request message contains If the RRC connection reconfiguration request message contains mobile control information, the UE performs handover; if the RRC connection reconfiguration request message contains non-access stratum specific information, the UE passes this dedicated information to Upper layer; if the RRC connection reconfiguration request message contains radio resource configuration, the UE reconfigures radio bearers, transport channels and physical channels according to the message content in the radio resource configuration; if the RRC connection reconfiguration request message contains handover process security configuration, the UE Execute the switch.

The beneficial effect of the present invention is that in the prior art, when any configuration item in the RRC reconfiguration item is abnormal and the reconfiguration fails, it is necessary to send an RRC connection re-establishment request message to the network end, and initiate the RRC connection re-establishment process. The improved RRC reconfiguration failure processing method improves the existing technology, reduces the implementation complexity of the RRC connection reconfiguration process, and improves the efficiency.

Description of drawings

Fig. 1 is a schematic diagram of a successful implementation process of reconfiguration in the RRC connection reconfiguration process in the prior art solution;

Fig. 2 is the realization flow diagram of the method of the present invention;

Fig. 3 is a schematic diagram of a processing method for RRC reconfiguration failure provided in the first embodiment of the present invention;

4 is a schematic diagram of a processing method for RRC reconfiguration failure provided in the second embodiment of the present invention;

FIG. 5 is a schematic diagram of a processing method for RRC reconfiguration failure provided in the third embodiment of the present invention.

Detailed ways

In view of the existence in the RRC connection reconfiguration of prior art 3GPP LTE, when any parameter in the RRC connection reconfiguration message is abnormal, it is necessary to restore to the configuration before receiving the RRC connection reconfiguration message, resulting in cumbersome operations. The basic idea of the present invention is: after receiving the RRC connection reconfiguration message from the network side, the UE sequentially executes each parameter in the RRC connection reconfiguration message; and modifies the RRC connection according to the configured execution status of the current parameters. Add a bit in the RRC connection re-establishment request message to indicate the specific failure reason of the re-establishment reason, and encapsulate it into the RRC connection re-establishment request message, and send it to the network side when the reconfiguration fails.

The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings and the schematic diagram of the system module structure of the present invention. Figure 2 is a schematic diagram of the system module structure of the present invention. The radio resource control connection reconfiguration failure processing system includes a user equipment end and a network equipment end. Among them, the user equipment end includes: a user end receiving unit, a user end execution unit, a user end setting unit, a user end sending unit, and a user end release unit; the network end includes: a network end receiving unit, a network end decision processing unit, and a network end sending unit. unit.

The user end receiving unit receives the RRC connection reconfiguration message from the network side; the user end execution unit executes each parameter in the RRC connection reconfiguration message, and selects to perform the operation of maintaining the current configuration or recovering the current configuration according to the configuration execution status of the current parameters. The process of configuring before the UE receives the RRC connection reconfiguration message, and at the same time sequentially execute the parameters in the RRC connection reconfiguration message; The current configuration does not need to be restored to the configuration before receiving the RRC connection reconfiguration message, and the failure reason value is set according to the specific reason, and the failure reason value is encapsulated into the RRC connection reconfiguration message, and the UE according to the configuration items contained in the RRC connection reconfiguration message , perform the following actions in sequence:

(1) If the measurement-related information measConfig is included, perform partial modification of the measurement configuration;

(2) If it contains the mobility control information MobilityControlInfo, execute the handover;

(3) If it contains non-access stratum dedicated information dedicatedInfoNASList, pass this field part to the upper layer;

(4) If radio resource configuration radioResourceConfigDedicated is included, reconfigure the radio bearer, data radio bearer, transmission channel and physical channel according to the message content;

(5) If the security configuration part securityConfigHO in the switching process is included, the switching is performed;

If the above five items can be successfully executed, the UE will send an RRC connection reconfiguration complete message to E-UTRAN to complete the RRC connection reconfiguration; if any of the above five items is abnormal during execution, the RRC connection The reconfiguration process failed and set the cause value for a different failure reason.

The user end sending unit sends the RRC connection reconfiguration message encapsulated with the failure cause value to the network; during the radio resource control connection reconfiguration process, when the configuration of the UE physical layer parameters fails, or the maximum number of retransmissions is exceeded, the RRCConnectionReestablishmentRequest( When the RRC connection reestablishment request) message fails to be sent, the UE release unit releases the relevant radio resources of the RRC connection and directly returns to the idle state. When idle, the UE performs the cell selection process and camps on the corresponding cell.

The network-side receiving unit receives the radio resource control connection re-establishment request message from the UE; the network-side judgment processing unit analyzes the reason for the re-establishment of the RRC connection re-establishment request message received by the network side, and performs judgment processing according to the sequence execution agreement and the failure cause value; The end sending unit sends the RRC connection reconfiguration message or the RRC connection reestablishment message to the UE according to the decision result.

The method for processing the failure of RRC connection reconfiguration in the LTE system of the present invention specifically includes the following steps:

Step 201, the user end adds a bit in the RRC connection reconfiguration request message to indicate the failure reason, and encapsulates it in the RRC connection re-establishment request message, and sends it to the network end,

Step 202, after the RRC layer of the network side receives the RRC connection re-establishment request message, the sending unit of the network side sends the RRC connection reconfiguration message to the UE side;

Step 203, after the receiving unit at the UE side receives the RRC connection reconfiguration message, the executing unit sequentially executes each parameter in the RRC connection reconfiguration request message.

According to the configuration items contained in the RRC connection reconfiguration request message, the UE executes the process sequentially as follows:

(1) If the RRC connection reconfiguration request message contains measurement-related information (measConfig), the UE performs partial modification of the measurement configuration;

(2) If the RRC connection reconfiguration request message contains mobility control information (MobilityControlInfo), the UE performs handover;

(3) If the RRC connection reconfiguration request message contains non-access stratum dedicated information (dedicatedInfoNASList), the UE passes this field part to the upper layer;

(4) If the RRC connection reconfiguration request message contains radio resource configuration (radioResourceConfigDedicated), the UE reconfigures radio bearers, data radio bearers, transport channels and physical channels according to the content of the message;

(5) If the RRC connection reconfiguration request message contains the security configuration (securityConfigHO) during the handover process, the UE performs the handover;

Step 204, when the reconfiguration is successful, the sending unit at the UE side sends an RRC connection reconfiguration complete message to the network side. The network end receives the RRC connection reconfiguration complete message;

Step 205, if any one of the above five reconfiguration items is abnormal during execution, the RRC connection reconfiguration process fails.

In the ReestablishmentCause (reason for reestablishment) in the RRC connection reestablishment request message, an indication bit is added, that is, 3 bits are used to indicate the cause of failure. details as follows:

000: Indicates that the reconfiguration failed due to the exception of the measConfig (measurement configuration) configuration item in the RRC reconfiguration message;

001: Indicates that the reconfiguration failed due to the abnormality of the mobilityControlInfo (mobility control information) configuration item in the RRC reconfiguration message;

010: Indicates that the reconfiguration failed due to the abnormal configuration of dedicatedInfoNASList (non-access stratum dedicated information list) in the RRC reconfiguration message;

011: Indicates that the reconfiguration failed due to the exception of the radioResourceConfigDedicated (radio resource configuration dedicated) configuration item in the RRC reconfiguration message;

100: Indicates that the reconfiguration failed due to an abnormal securityConfig (security configuration) configuration item in the RRC reconfiguration message;

101: Handover failure (handoverFailure)

110: Indicates that other failures trigger the RRC connection reestablishment process (otherFailure)

111: spare 1 (reserved value)

Step 206, encapsulate the failure cause value into an RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message, and send it to the network side; the receiving unit on the network side receives the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) containing the reconfiguration failure cause value After receiving the message, execute the above-mentioned parameters indicating failure cause values according to the agreed sequence, and the judgment processing unit executes judgment processing according to the relevant parameters. Judgment processing specifically includes: judging whether to re-initiate radio resource control reconfiguration, modifying RRC connection establishment, including establishing, modifying or releasing RB (radio bearer); performing handover, establishing, modifying or releasing measurement processing: re-establishing RRC connection, or Release the RRC connection directly.

The specific implementation process is:

When the 3 bits indicating the cause of failure in ReestablishmentCause are 000, 010, and 011, it means that the reconfiguration failure caused by the abnormality of measConfig (measurement configuration) and the abnormality caused by the abnormality of dedicatedInfoNASList (non-access stratum specific information list) respectively The reconfiguration failure and the reconfiguration failure caused by the exception of radioResourceConfigDedicated (radio resource configuration dedicated). The network side adjusts the parameters of the corresponding configuration item according to the bit value of ReestablishmentCause in the received RRC connection reestablishment request message, and then sends the RRCConnectionReconfiguration (RRC connection reconfiguration) message without mobilityControlInfo (mobility control information) to the UE side. After receiving the message, the UE performs connection reconfiguration.

When the 3 bits in ReestablishmentCause are 001 and 100, it indicates the reconfiguration failure caused by the failure of the mobilityControlInfo (mobility control information) and securityConfigHO (handover security configuration) configuration items respectively. The bit value of ReestablishmentCause adjusts the parameters of the configuration item, and then sends the RRCConnectionReconfiguration (RRC connection reconfiguration) message containing mobilityControlInfo to the UE. After receiving the message, the UE performs handover.

When the 3 bits in the ReestablishmentCause are 101, 110, and 111, they respectively represent the RRC connection reestablishment request initiated by handoverFailure and otherFailure spare 1 (representing reserved items), and the network side receives the ReestablishmentCause in the RRC connection reestablishment request message. Bit value, send an RRCConnectionReestablishment (RRC connection reestablishment) message to the UE, and after receiving the message, the UE performs RRC connection reestablishment.

Step 207, according to the decision result, send the RRC connection reconfiguration message or the RRC connection re-establishment message to the UE through the sending unit at the network end.

Step 208, the receiving unit at the UE side receives the RRC connection reconfiguration message from the network side, and executes the RRC connection reconfiguration process; when receiving the RRC connection reconfiguration message containing mobilityControlInfo (mobility control information) information from the network side, executes the handover process ; When receiving the RRC connection reestablishment message from the network side, execute the RRC connection reestablishment process.

Step 209. During the reconfiguration process of the radio resource control connection, when the configuration of the UE physical layer parameters fails, or when the maximum number of retransmissions causes the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message to fail to be sent, the release unit on the UE end releases the associated RRC connection. Wireless resources, return to the idle state directly.

The present invention will be further described below with example.

Example 1.

As shown in Figure 3, the flow of the specific implementation method includes the following steps:

Step 301: If the UE in the connected state needs to modify the RRC connection during the service process, the E-UTRAN (Evolved Terrestrial Radio Access Network) sends an RRC connection reconfiguration message to the UE.

Step 302, UE processes according to relevant fields in the RRC connection reconfiguration message. The specific implementation process is as follows:

If the reconfiguration failure is caused by an exception in one of measConfig (measurement configuration), dedicatedInfoNASList (non-access stratum dedicated information list) or radioResourceConfigDedicated (radio resource configuration specific meaning), use 000, 001, 011 respectively express. Finally, the reconfiguration failure cause value is encapsulated into an RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message and sent to the network side.

Step 303, when the network side receives the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message, the decision processing unit of the network side makes a decision process on the ReestablishmentCause (reestablishment cause) value in the message.

The judgment process at the network side is as follows:

When the 3 bits in ReestablishmentCause are 000, 010, and 011, it indicates reconfiguration failure caused by the exception of measConfig, reconfiguration failure caused by the exception of dedicatedInfoNASList, and reconfiguration failure caused by the exception of radioResourceConfigDedicated, respectively.

The network side adjusts the parameters of the corresponding configuration item according to the bit value of the ReestablishmentCause in the received RRC connection reestablishment request message, and then sends the RRCConnectionReconfiguration message to the UE side without mobilityControlInfo. After receiving the message, the UE performs connection reconfiguration.

Example 2.

As shown in Figure 4, the flow of the specific implementation method includes the following steps:

Step 401, if the UE in the connected state needs to modify the RRC connection during the service process, the E-UTRAN sends an RRC connection reconfiguration message to the UE.

Step 402, UE processes according to relevant fields in the RRC connection reconfiguration message.

The specific implementation process is as follows:

If the reconfiguration failure is caused by an exception in the configuration of a certain item in mobilityControlInfo or SecurityConfigHO, it is indicated by 001 and 100 respectively. Finally, the reconfiguration failure cause value is encapsulated into the RRCConnectionReestablishmentRequest message and sent to the network side.

Step 403, when the network side receives the RRCConnectionReestablishmentRequest (RRC connection reestablishment request) message, the decision processing unit of the network side makes a decision process on the ReestablishmentCause (reestablishment cause) value in the message.

The judgment process at the network side is as follows:

When the 3 bits in the ReestablishmentCause are 001 and 100, it means that the reconfiguration failure caused by the failure of the mobilityControlInfo and securityConfigHO configuration items respectively, and the network adjusts the corresponding configuration item according to the bit value of the ReestablishmentCause in the received RRC connection reestablishment request message. parameter, and then send the RRCConnectionReconfiguration message including mobilityControlInfo to the UE, and the UE performs handover after receiving the message.

Example 3:

As shown in Figure 5, the flow of the specific implementation method includes the following steps:

Step 501, if the UE in the connected state needs to modify the RRC connection during the service process, the E-UTRAN sends an RRC connection reconfiguration message to the UE.

Step 502, UE processes according to relevant fields in the RRC connection reconfiguration message. The specific implementation process is as follows:

If the reconfiguration fails due to handoverFailure or otherFailure, etc., it is indicated by 101, 110, and 111 respectively. Finally, the reconfiguration failure cause value is encapsulated into the RRCConnectionReestablishmentRequest message and sent to the network side.

Step 503, when the network side receives the RRCConnectionReestablishmentRequest message, the judgment processing unit of the network side judges the ReestablishmentCause value in the message.

The judgment process at the network side is as follows:

When the 3 bits in the ReestablishmentCause are 101, 110, and 111, they respectively represent the RRC connection reestablishment request initiated by handoverFailure and otherFailure spare 1 (representing reserved items), and the network side receives the ReestablishmentCause in the RRC connection reestablishment request message. Bit value, send an RRCConnectionReestablishment message to the UE, and the UE will perform RRC connection reestablishment after receiving the message.

The above descriptions are only preferred embodiments of the present invention. All equivalent changes and modifications made according to the patent scope of the present invention shall fall within the scope of the present invention.

Claims (6)

1. the connection reconfiguration failure of radio resource control treatment system comprises, user side and network terminal is characterized in that, user side UE receiving element receives the RRC wireless resource control connection reconfiguration message from network side; The user side performance element is carried out described RRC and is connected reconfiguration message, connect parameter current in the reconfiguration message according to RRC and select to carry out to keep current configuration or return to user side and receive configuration before RRC connects reconfiguration message, order is carried out RRC and is connected each parameter in the reconfiguration message simultaneously; When appearance was unusual, the user side of UE was provided with the parameter that current configuration is kept in the unit, and abnormal causation value is encapsulated in the RRC connection reconstruction message; The RRC connection reconfiguration message that the user side transmitting element will be packaged with failure reason value sends to network terminal; The user side releasing unit discharges the relevant Radio Resource that RRC connects, and directly returns idle condition; Network terminal receives the radio resource control connection reestablishment request message, and agreement and the failure reason value enforcement of judgment execute a judgement carried out according to order according to court verdict, connect reconfiguration message with RRC or RRC connection reconstruction message sends to user side.

2. system according to claim 1 is characterized in that, when causing RRC connection reconstruction request message to send failure when user side physical layer parameter configuration failure or above maximum retransmission, carries out cell selecting when user side is idle, the resident respective cell that arrives.

3. the processing method of connection reconfiguration failure of radio resource control in the LTE system, it is characterized in that, in RRC connection reconfiguration request message, increase a bit and be used to represent failure cause, by the network terminal transmitting element RRC is connected reconfiguration message and send to user side; The user side performance element is carried out each parameter in the RRC connection reconfiguration request message in proper order; When execution is reshuffled successfully, the UE end sends RRC to network terminal and connects to reshuffle and finishes message; Reshuffle certain parameter failure as execution, failure reason value is encapsulated in the RRC connection reconstruction request message, and sends to network side; After network side receives above-mentioned message, handle according to parameter and described failure reason value enforcement of judgment execute a judgement that order is carried out; And court verdict sent to user side, the control user side is carried out handover process or is carried out RRC connection reconstruction process.

4. according to the processing method of claim 3, it is characterized in that, comprise metrical information if RRC connects in the reconfiguration request message, UE carries out and measures configuration modification; If RRC connects in the reconfiguration request message and comprises mobile control information, UE carries out switching; If RRC connects in the reconfiguration request message and comprises the Non-Access Stratum specific information, UE passes to the upper strata to this specific information; If RRC connects in the reconfiguration request message and comprises radio-resource-configuration, UE reconfigures radio bearer, transmission channel and physical channel according to message content in the radio-resource-configuration; If RRC connects in the reconfiguration request message and comprises the handoff procedure security configuration, UE carries out switching.

5. according to the processing method of claim 3, it is characterized in that described decision process specifically comprises: whether judgement initiates Radio Resource control is again reshuffled, and foundation, modification or releasing wireless loading RB rebulid RRC and connect, and perhaps directly discharge RRC and connect.

6. according to the processing method of claim 3, it is characterized in that, connect reconfiguration message, carry out handover process as the RRC that contains mobile control information information in the judgement structure; As adjudicate and contain RRC connection reconstruction message in the structure, carry out RRC connection reconstruction process.

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