WO2015081510A1 - Radio resource control connection reestablishment method and enodeb - Google Patents

Abstract

Provided are a radio resource control (RRC) connection reestablishment method and eNodeB. The method comprises: an eNodeB detects whether data transmission is normal between the eNodeB and user equipment (UE); when the data transmission is abnormal, the eNodeB transmits signaling to the UE to enable the UE to conduct RRC connection reestablishment according to the signaling; the eNodeB receives and processes the RRC connection reestablishment request transmitted by the UE. The present invention enables the eNodeB to actively trigger the UE initiating RRC connection reestablishment when the data transmission is abnormal between the eNodeB and the UE, thus avoiding data transmission interruption and reducing the impact on data transmission.

Description

 Method and base station for performing radio resource control connection reconstruction

 The present invention relates to the field of wireless communications, and in particular, to a method and a base station for performing radio resource control connection reestablishment. Background technique

 According to the 3rd Generation Partnership Project (3GPP) protocol, the current Radio Resource Control (RRC) connection reestablishment is determined and initiated by the User Equipment (UE). The UE is in an RRC connected state, and initiates an RRC connection reestablishment when the UE satisfies the conditions stipulated by the 3GPP protocol.

 In some scenarios, data transmission between the UE and the Evolved NodeB (eNodeB) may be problematic. In this case, the RRC reestablishment is required to restore the wireless connection to continue to maintain the normal transmission of services between the two parties. The current solution is that the UE needs to initiate RRC connection reestablishment when the conditions specified by the 3GPP protocol are met. The current solution cannot perform RRC connection reestablishment in time when there is a problem in data transmission between the eNodeB and the UE, thus causing data between the eNodeB and the UE. The transmission is interrupted, causing a dropped call. SUMMARY OF THE INVENTION Embodiments of the present invention provide a method and a base station for performing radio resource control connection reestablishment, which reduce the impact on data transmission.

 In a first aspect, a base station is provided, including:

 Processing unit and transceiver unit;

 The processing unit is configured to detect whether data transmission between the base station and the user equipment UE is normal;

 The processing unit is further configured to: when the data transmission abnormality is detected, send, by the transceiver unit, signaling to the UE, so that the UE sends a radio resource control RRC to the base station according to the signaling. Connection reconstruction request;

 The transceiver unit is further configured to receive the RRC connection reestablishment request;

The processing unit is further configured to process the RRC connection reestablishment received by the transceiver unit Request.

 With reference to the first aspect, in a first optional implementation, the processing unit sends signaling to the UE by using a transceiver unit, so that the UE sends an RRC connection reestablishment to the base station according to the signaling. Request, including:

 Transmitting, by the transceiver unit, a physical downlink control channel command PDCCH to the UE

 ORDER, the PDCCH ORDER is used to enable the UE to initiate random access to the base station; the transceiver unit is further configured to receive a random access request sent by the UE according to the PDCCH ORDER;

 The processing unit is further configured to: perform random access failure of the UE according to the random access request received by the transceiver unit, to send, to the base station, when the number of random access failures of the UE reaches a predetermined threshold RRC connection reestablishment request.:.

 With reference to the first aspect, in a second optional implementation manner, the processing unit sends signaling to the UE by using a transceiver unit, so that the UE sends an RRC connection reestablishment to the base station according to the signaling. Request, including:

 The air interface signaling of the integrity error is sent to the UE by the transceiver unit, so that the UE sends the RRC connection reestablishment request to the base station after the integrity protection fails when the UE performs integrity detection on the air interface signaling.

 With reference to the first aspect, in a third optional implementation, the processing unit sends signaling to the UE by using a transceiver unit, so that the UE sends an RRC connection reestablishment to the base station according to the signaling. Request, including:

 Sending, by the transceiver unit, an RRC connection reconfiguration command to the UE, where the RRC connection reconfiguration command carries a first cell that is not supported by the UE, so that the UE fails to perform RRC connection reconfiguration and then sends the eNB to the base station. Sending the RRC connection reestablishment request.

 With reference to the first aspect, in a fourth optional implementation, the processing unit sends signaling to the UE by using a transceiver unit, so that the UE sends an RRC connection reestablishment to the base station according to the signaling. Request, including:

 And transmitting, by the transceiver unit, a handover command to the UE, where the handover command carries a second cell that fails the handover of the UE, so that the UE fails to switch, and sends the RRC connection reestablishment request to the base station.

With reference to the first aspect and the foregoing possible implementation manner, in a fifth optional implementation manner, The processing unit is configured to detect whether data transmission between the base station and the UE is normal, including any one or any combination of the following:

 And detecting, according to the retransmission ratio of the data transmission, if the retransmission ratio exceeds a retransmission proportional threshold, determining that the data transmission is abnormal;

 And detecting, according to the error rate of the data transmission, if the error rate exceeds the error rate threshold, determining that the data transmission is abnormal;

 And detecting, according to the uplink time advance TA measurement value, if the TA measurement value is invalid or the fluctuation of the TA measurement value exceeds a TA fluctuation threshold, determining a data transmission abnormality; and performing, according to the uplink signal quality of the UE, detecting If the uplink signal quality is lower than the uplink signal quality threshold, determining that the data transmission is abnormal;

 It is used to detect an uplink physical channel, and if the uplink physical channel detection fails, it is determined that the data transmission is abnormal.

 The second aspect provides a method for performing radio resource control connection reestablishment, including: detecting, by a base station, whether data transmission between the base station and the user equipment UE is normal; when the data transmission is abnormal, the base station is to the UE Transmitting signaling, so that the UE sends a radio resource control RRC connection reestablishment request to the base station according to the signaling;

 The base station receives and processes the RRC Connection Reestablishment Request.

 With reference to the second aspect, in a first optional implementation manner, the base station sends a signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling, including:

 The base station sends a physical downlink control channel command PDCCH ORDER to the UE, where the PDCCH ORDER is used to enable the UE to initiate random access to the base station;

 After the base station sends the PDCCH ORDER to the UE, the method further includes: receiving, by the base station, a random access request sent by the UE according to the PDCCH ORDER, and performing random access failure of the UE according to the random access request, And transmitting, by the base station, the RRC connection reestablishment request when the number of random access failures of the UE reaches a predetermined threshold.

 With reference to the second aspect, in a second optional implementation manner, the base station sends signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling, including:

Sending, by the base station, air interface signaling with incorrect integrity to the UE, so that the UE is The air interface signaling sends the RRC connection reestablishment request to the base station after the integrity protection fails in the integrity check.

 With reference to the second aspect, in a third optional implementation manner, the base station sends a signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling, including:

 The eNB sends an RRC connection reconfiguration command to the UE, where the RRC connection reconfiguration command carries a first cell that is not supported by the UE, so that the UE fails to perform RRC connection reconfiguration and then goes to the base station. Send the RRC connection reestablishment request.:

 With reference to the second aspect, in a fourth optional implementation manner, the base station sends a signaling to the UE, to enable the UE to send an RRC connection reestablishment request to the base station according to the signaling, including:

 The base station sends a handover command to the UE, where the handover command carries a second cell that fails the handover of the UE, so that the UE fails to handover, and then sends the RRC connection reestablishment request to the base station.

 With reference to the second aspect and the foregoing possible implementation manner, in a fifth optional implementation manner, the base station detects whether data transmission between the base station and the UE is normal, including any one or any combination of the following:

 Detecting according to the retransmission ratio of the data transmission, if the retransmission ratio exceeds the retransmission ratio threshold, determining that the data transmission is abnormal;

 Detecting according to the error rate of the data transmission, if the error rate exceeds the error rate threshold, determining that the data transmission is abnormal;

 Performing detection according to the uplink time advance TA measurement value, if the TA measurement value is invalid or the TA measurement value fluctuation exceeds the TA fluctuation threshold, determining that the data transmission is abnormal;

 Performing detection according to the uplink signal quality of the UE, and determining that the data transmission is abnormal if the uplink signal quality is lower than an uplink signal quality threshold;

 Detecting an uplink physical channel, if the uplink physical channel detection fails, determining data transmission ^

 In a third aspect, a base station is provided, including:

 a processor, a transceiver, and a memory;

The memory is for storing instructions; The processor executes instructions stored in the memory for:

 Detecting whether data transmission between the base station and the user equipment UE is normal;

 Transmitting signaling to the UE by the transceiver, so that the UE sends a radio resource control RRC connection reestablishment request to the base station according to the signaling; when the data transmission is abnormal, the transceiver further And configured to receive the RRC connection reestablishment request;

 The processor is further configured to process the RRC connection reestablishment request received by the transceiver. With reference to the third aspect, in a first optional implementation, the processor is configured to send, by using the transceiver, signaling to the UE, to enable the UE to send an RRC to the base station according to the signaling. Connection rebuild requests, including:

 And transmitting, by using the transceiver, a physical downlink control channel command PDCCH to the UE

ORDER, the PDCCH ORDER is used to enable the UE to initiate random access to the base station; after the transceiver is configured to send the PDCCH ORDER to the UE, the method is further configured to: receive, according to the PDCCH ORDER, the UE sends Random access request;

 The processor is further configured to: perform random access failure of the UE according to the random access request received by the transceiver, to send, to the base station, when the number of random access failures of the UE reaches a predetermined threshold Said RRC connection reestablishment request.

 With reference to the third aspect, in a second optional implementation, the processor is configured to send, by using the transceiver, signaling to the UE, to enable the UE to send an RRC to the base station according to the signaling. Connection rebuild requests, including:

 The air interface signaling used by the transceiver to send an integrity error to the UE, so that when the UE performs integrity detection on the air interface signaling, the integrity protection fails, and the RRC is sent to the base station. Connection rebuild request.

 With reference to the third aspect, in a third optional implementation, the processor is configured to send, by using the transceiver, signaling to the UE, to enable the UE to send an RRC to the base station according to the signaling. Connection rebuild requests, including:

 The RRC connection reconfiguration command is sent to the UE by using the transceiver, where the RRC connection reconfiguration command carries a first cell that is not supported by the UE, so that the UE fails to perform RRC connection reconfiguration. Sending the RRC connection reestablishment request to the base station.

With reference to the third aspect, in a fourth optional implementation, the processor is configured to send, by using the transceiver, signaling to the UE, to enable the UE to send the base station to the base station according to the signaling Send an RRC connection reestablishment request, including:

 And sending, by the transceiver, a handover command to the UE, where the handover command carries a second cell that fails the handover of the UE, so that after the handover fails, the RRC connection is sent to the base station. Rebuild request.

 With reference to the third aspect and the foregoing possible implementation manner, in a fifth optional implementation manner, the processor is configured to detect whether data transmission between the base station and the UE is normal, including any one or any combination of the following:

 And detecting, according to the retransmission ratio of the data transmission, if the retransmission ratio exceeds the retransmission proportional threshold, determining that the data transmission is abnormal;

 And detecting, according to the error rate of the data transmission, if the error rate exceeds the error rate threshold, determining that the data transmission is abnormal;

 And detecting, according to the uplink time advance TA measurement value, if the TA measurement value is invalid or the fluctuation of the TA measurement value exceeds a TA fluctuation threshold, determining a data transmission abnormality; and performing, according to the uplink signal quality of the UE, detecting If the uplink signal quality is lower than the uplink signal quality threshold, determining that the data transmission is abnormal;

 It is used to detect an uplink physical channel, and if the uplink physical channel detection fails, it is determined that the data transmission is abnormal.

 The method for performing radio resource control connection reestablishment and the technical effect of the base station provided by the embodiment of the present invention are: when data transmission between the base station and the UE is abnormal, the base station sends signaling to the UE, so that the UE initiates RRC according to the signaling. The connection re-establishment process is implemented, so that the base station can implement active control of the RRC connection reestablishment of the user equipment when the data transmission is abnormal, and can actively trigger the UE to initiate the RRC connection reestablishment, and perform RRC connection reestablishment in time to avoid data transmission interruption. DRAWINGS

 1A is a network architecture diagram of an embodiment of the present invention;

 1B is a schematic flow chart of Embodiment 1 of a method according to the present invention;

 2 is a schematic flow chart of Embodiment 2 of a method according to the present invention;

 3 is a schematic signaling diagram of Embodiment 3 of a method according to the present invention;

 4 is a schematic signaling diagram of Embodiment 4 of a method according to the present invention;

5 is a schematic signaling diagram of Embodiment 5 of a method according to the present invention; 6 is a schematic signaling diagram of Embodiment 6 of a method according to the present invention;

 7 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention;

 FIG. 8 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention. detailed description

 The embodiment of the invention provides a method for performing RRC connection reestablishment, by which the base station can actively control the UE to perform an RRC connection reestablishment procedure.

 For convenience of description, a Long Term Evolution (LTE) network is taken as an example. The base station is an evolved base station (eNodeB) in the LTE network.

 As shown in FIG. 1A, a wireless communication network A100 according to an embodiment of the present invention may be used, and the network may be an LTE network or an LTE-Advanced network. The wireless communication network includes: an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) A102, an Evolved Packet Core (EPC) A101, and a User Equipment (UE) A103 ( For example, A103a, A103b, A103c, etc., where E-UTRAN A102 includes several eNodeBs (eg, A102a, A102b, etc.).

 The 3GPP specifies that the UE sends an RRC Connection Reestablishment Request to the base station when the handover fails, the radio link fails, the integrity protection fails, or the RRC connection reconfiguration fails.

 When the data transmission between the base station and the UE is abnormal, in order to avoid the interruption of the data transmission, the embodiment of the present invention provides a method and a base station for actively triggering the UE to initiate the RRC connection reestablishment, so that the UE can meet the conditions for initiating the RRC connection reestablishment in time, and reduce the pair. The impact of data transfer improves the user experience.

 Embodiment 1

 FIG. 1B is a schematic flowchart of a method for performing radio resource control connection reestablishment according to the present invention. The method in this embodiment may be performed by a base station. As shown in FIG. 1, the method may include:

 101. The base station detects whether data transmission between the base station and the UE is normal.

 There are various ways to detect whether the data transmission between the base station and the UE is normal. The base station can use the retransmission ratio or the bit error rate of the uplink or downlink data transmission to determine whether the data transmission is normal.

Optionally, if the retransmission ratio exceeds the retransmission ratio threshold, the data transmission is abnormal, or if the retransmission ratio does not exceed the retransmission ratio threshold, the data transmission is normal. Optionally, if the error rate exceeds the error rate threshold, the data transmission is abnormal, or if the error rate does not exceed the error rate threshold, the data transmission is normal.

 For example, when the base station and the UE perform data transmission, the base station may obtain a retransmission ratio or a bit error rate of the uplink or downlink data transmission, and compare the obtained retransmission ratio or the error rate with a corresponding threshold setting value, where the base station The threshold corresponding to the retransmission ratio or the bit error rate may be stored in advance.

 Optionally, when the measured value of the time advance (TA) is invalid or the fluctuation of the TA measurement exceeds the TA fluctuation threshold, the base station considers that the data transmission is abnormal.

 Optionally, the base station may further determine whether the data transmission is normal according to the uplink signal quality of the UE. When the uplink signal quality of the UE is lower than the uplink signal quality threshold, it is determined that the data transmission is abnormal. For example, when the UE's Signal to Interference plus Noise Ratio (SINR) is lower than the SINR threshold, it is determined that the data transmission is abnormal. Or, when the uplink reference signal received power (RSRP) of the UE is lower than the SINR threshold, the data transmission is abnormal.

 Optionally, the base station may also consider that the data transmission is abnormal when the uplink physical channel detection fails. It should be understood that the manner in which the above-mentioned exemplary base station detects whether the data transmission is normal may be used alone or in combination in various manners, which is not limited in this embodiment.

 In this step, if the data transmission between the base station and the UE is normal, the base station does not perform the subsequent steps of this embodiment; if the data transmission between the base station and the UE is abnormal, the base station performs 102.

 102. The base station sends signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling.

 When the data transmission between the base station and the UE is abnormal, the base station sends signaling to the UE, so that the UE performs RRC connection reestablishment according to the signaling.

 Optionally, the signaling sent by the base station to the UE may be an RRC connection reconfiguration command, a handover command, an air interface signaling with an integrity error, or a random access command, etc., when the data transmission between the base station and the UE is abnormal, the base station Construct the above signaling.

 Optionally, the UE performs processing according to the signaling sent by the base station. When the UE fails to switch, the radio link fails, the integrity protection fails, or the RRC connection reconfiguration fails, the UE performs RRC connection reestablishment, and the UE sends an RRC connection reestablishment to the base station. request.

103. The base station receives and processes a UE initiated RRC connection reestablishment request. After receiving the RRC connection reestablishment request, the eNB sends an RRC connection reestablishment message to the UE, so that the UE performs RRC connection reestablishment, and after the RRC connection reestablishment, the UE sends an RRC connection reestablishment complete message to the base station. Alternatively, if the base station refuses to reestablish the RRC connection for the UE, the UE replies with an RRC Connection Reestablishment Reject message.

 In this embodiment, when the data transmission between the base station and the UE is abnormal, the base station sends signaling to the UE, so that the UE can initiate an RRC connection reestablishment process according to the signaling, so that the base station can implement the RRC when the data transmission is abnormal. The active control of the connection reestablishment can actively trigger the UE to initiate RRC connection reestablishment, and perform RRC connection reestablishment in time to avoid data transmission interruption. This embodiment can restore the data connection as soon as possible when the data transmission is abnormal, and reduce the impact on the data transmission.

 Embodiment 2

 2 is a schematic flowchart of a method for performing radio resource control connection reestablishment according to the present invention. The method in this embodiment may be performed by a UE. For the specific process and description, refer to the first embodiment. As shown in FIG. 2, the method may include:

 201. The UE receives the signaling sent by the base station, where the signaling is signaling that is sent by the base station to the UE when the data transmission between the base station and the UE is abnormal.

 202. The UE initiates an RRC connection reestablishment request to the base station according to the foregoing signaling.

 The signaling in this embodiment is as described in the first embodiment above. Optionally, the determining condition of the data transmission abnormality between the base station and the UE may be referred to the description in the first embodiment.

 In this embodiment, when the data transmission between the base station and the UE is abnormal, the UE receives the signaling sent by the base station, and can initiate an RRC connection reestablishment process according to the signaling, thereby enabling the base station to implement the data transmission abnormality. The active control of the RRC connection reestablishment can actively trigger the UE to initiate an RRC connection reestablishment. This embodiment can recover the data connection as soon as possible when the data transmission is abnormal, and reduce the influence on the data transmission.

 The signaling sent by the base station to the UE is described in detail below, so that the UE initiates an RRC connection reestablishment request according to the signaling.

 Embodiment 3

 FIG. 3 is a schematic signaling diagram of a method for performing radio resource control connection reestablishment according to the present invention. As shown in FIG. 3, the method may include:

 301. The base station detects whether data transmission between the base station and the UE is normal.

The method for detecting whether the data transmission between the base station and the UE is normal is as follows. Description

 If the data transmission between the base station and the UE is normal, the base station does not perform the subsequent steps in this embodiment; if the data transmission between the base station and the UE is abnormal, the base station performs step 302.

 302. The base station sends a physical downlink control channel order (Physical Downlink Control Channel Order, PDCCH Order) to the UE.

 The signaling sent by the base station to the UE is a PDCCH ORDER, and the UE initiates random access to the base station after receiving the PDCCH ORDER.

 303. The UE sends a random access request to the base station.

 After receiving the PDCCH ORDER, the UE sends a random access request according to the random access pre-steering base station carried in the PDCCH ORDER.

 304. The base station does not feed back the access response to the UE.

 After receiving the random access request from the UE, the base station performs processing, so that the UE access fails. Optionally, the base station does not feed back the random access response to the UE, so that the UE considers that the random access fails.

 After determining that the random access fails, the UE will resend the random access request, that is, proceed to step 303, the base station still does not feed back the random access response to the UE, and the UE fails the random access again.

 305. The UE determines that the number of random access failures reaches a predetermined threshold.

 The UE counts the number of random access failures. When the number of random access failures reaches a predetermined threshold, step 306 is performed.

 306. The UE sends an RRC connection reestablishment request to the base station.

 307. The base station receives and processes the UE initiated RRC connection reestablishment request.

 In this embodiment, when the data transmission between the base station and the UE is abnormal, the base station sends a PDCCH ORDER to the UE, triggering the UE to initiate random access to the base station, and controlling the random access failure, so that the number of random access failures of the UE reaches a predetermined threshold. The RRC connection reestablishment is performed by the UE, so that the base station can implement active control of the RRC connection reestablishment when the data transmission is abnormal, and can actively trigger the UE to initiate the RRC connection reestablishment, and can restore the data connection as soon as possible when the data transmission is abnormal, and reduce the data transmission. influences.

 Embodiment 4

 FIG. 4 is a schematic signaling diagram of a method for performing radio resource control connection reestablishment according to the present invention. As shown in FIG. 4, the method may include:

401. The base station detects whether data transmission between the base station and the UE is normal. If the data transmission between the base station and the UE is normal, the base station does not perform the subsequent steps in this embodiment; if the data transmission between the base station and the UE is abnormal, the base station performs step 402.

 402. The base station sends an air interface signaling with an integrity error to the UE.

 The signaling sent by the base station to the UE is the air interface signaling with the integrity error. In this embodiment, the air interface signaling is not limited. The processing performed by the base station is to make the integrity of the signaling message incorrect.

 403. The UE performs integrity detection on the air interface signaling of the integrity error.

 After receiving the air interface signaling sent by the base station, the UE performs integrity detection. The integrity check is mainly used by the UE to check whether the air interface signaling has been received.

 Since the base station sends the air interface signaling with the integrity error, that is, the base station has processed the air interface signaling before sending the air interface signaling, for example, modifying a parameter for the UE to perform integrity detection in the air interface signaling. The UE fails in the integrity check, that is, the UE obtains the integrity check result that the integrity protection fails.

 404. After the integrity detection fails, the UE sends an RRC connection reestablishment request to the base station after the integrity protection fails.

 The UE sends an RRC Connection Reestablishment Request to the base station due to the failure of the integrity protection.

 405. The base station receives and processes an RRC connection reestablishment request sent by the UE.

 In this embodiment, when the data transmission between the base station and the UE is abnormal, the base station sends the air interface signaling with the integrity error to the UE, so that the integrity protection fails when the UE performs the integrity detection on the air interface signaling, and then the UE performs the The RRC connection reestablishment implements the base station control UE to initiate an RRC connection reestablishment request. The base station can actively control the RRC connection reestablishment when the data transmission is abnormal, and can actively trigger the UE to initiate the RRC connection reestablishment, which can restore the data connection as soon as possible when the data transmission is abnormal, and reduce the impact on the data transmission.

 Embodiment 5

 FIG. 5 is a schematic signaling diagram of a method for performing radio resource control connection reestablishment according to the present invention. As shown in FIG. 5, the method may include:

 501. The base station detects whether data transmission between the base station and the UE is normal.

 If the data transmission between the base station and the UE is normal, the base station does not perform the subsequent steps of this embodiment; if the data transmission between the base station and the UE is abnormal, the base station performs step 502.

502. The eNB sends an RRC connection reconfiguration command to the UE, where the RRC connection reconfiguration command carries the first cell that is not supported by the UE. The signaling sent by the base station to the UE is an RRC connection reconfiguration command, so that the UE performs RRC connection reconfiguration.

 503. The UE performs RRC connection reconfiguration according to the RRC connection reconfiguration command.

 After receiving the RRC connection reconfiguration command sent by the base station, the UE performs RRC connection reconfiguration. If the UE completes the RRC connection reconfiguration task, it returns an RRC connection reconfiguration complete message to the base station; or, if the UE cannot perform RRC connection reconfiguration, That is, if the RRC connection reconfiguration fails, the UE falls back to the configuration before receiving the command, and initiates RRC connection reestablishment.

 Since the first cell carried in the RRC connection reconfiguration command is a cell that the UE does not support, the UE cannot perform RRC connection reconfiguration, that is, the RRC connection reconfiguration fails.

 504. The UE sends an RRC connection reestablishment request to the base station after the RRC connection reconfiguration fails. Since the UE fails to perform RRC connection reconfiguration, the UE sends an RRC connection reestablishment request to the base station.

 505. The base station receives and processes the UE initiated RRC connection reestablishment request.

 In this embodiment, when the data transmission between the base station and the UE is abnormal, the base station sends an RRC connection reconfiguration command to the UE, and the RRC connection reconfiguration command carries the first cell that the UE does not support, so that the RRC connection of the UE is heavy. After the configuration fails, the RRC connection reestablishment request is sent to the base station, so that the base station controls the UE to initiate an RRC connection reestablishment request. The base station can actively control the RRC connection reestablishment when the data transmission is abnormal, and can actively trigger the UE to initiate the RRC connection reestablishment, and can restore the data connection as soon as possible when the data transmission is abnormal, and reduce the impact on the data transmission.

 Embodiment 6

 FIG. 6 is a schematic diagram of signaling according to still another embodiment of a method for performing radio resource control reestablishment according to the present invention. As shown in FIG. 6, the method may include:

 601. The base station detects whether data transmission between the base station and the UE is normal.

 If the data transmission between the base station and the UE is normal, the base station does not perform the subsequent steps of this embodiment; if the data transmission between the base station and the UE is abnormal, the base station performs step 602.

 602. The base station sends a handover command to the UE, where the handover command carries a second cell, where the second cell is used to cause the UE to fail to switch.

The signaling sent by the base station to the UE is a handover command, that is, the base station instructs the UE to perform handover. The foregoing handover command includes, for the UE, performing inter-system handover or intra-system handover. In this embodiment, The base station carries a second cell in the handover command, and the second cell is a cell used to make the UE handover failure. For example, the base station sets one or more parameters of the handover command to an error.

 603. The UE performs handover according to the handover command.

 After receiving the handover command sent by the base station, the UE performs intra-system handover or inter-system handover. The second cell carried in the handover command will cause the UE to fail to handover. After the UE fails to handover, the RRC connection reestablishment is initiated.

 604. After the handover fails, the UE sends an RRC connection reestablishment request to the base station.

 605. The base station receives and processes the UE initiated RRC connection reestablishment request.

 In this embodiment, when the data transmission between the base station and the UE is abnormal, the base station sends a handover command to the UE, and the handover command carries the second cell used to make the UE handover failure, so that the UE fails to switch, and then the UE performs RRC. The connection is reestablished, and the base station controls the UE to initiate an RRC connection reestablishment request. The base station can actively control the RRC connection reestablishment when the data transmission is abnormal, and can actively trigger the UE to initiate the RRC connection reestablishment, which can restore the data connection as soon as possible when the data transmission is abnormal, and reduce the impact on the data transmission.

 Example 7

 Figure 7 is a schematic structural diagram of a first embodiment of a base station according to the present invention. As shown in Figure 7, the base station of this embodiment includes: a transceiver unit 71 and a processing unit 72;

 The processing unit 72 is configured to: check whether the data transmission between the base station and the UE is normal; the processing unit 72 is further configured to: when detecting the abnormality of the data transmission, send, by using the transceiver unit 71, signaling to the UE, so that the UE performs signaling according to the signaling. Sending an RRC connection reestablishment request to the base station;

 The transceiver unit 71 is further configured to: receive the foregoing RRC connection reestablishment request sent by the UE; and the processing unit 72 is further configured to: process the RRC connection reestablishment request received by the transceiver unit 71.

 Optionally, the processing unit 72 is further configured to: construct the foregoing signaling and control the sending and receiving unit 71 to send the signaling to the UE.

 Optionally, the transceiver unit 71 is specifically configured to: when the processing unit 72 detects an abnormal data transmission between the base station and the UE, send a PDCCH ORDER to the UE, where the PDCCH ORDER triggers the UE to initiate random access to the base station;

The transceiver unit 71 is further configured to: receive a random access request sent by the UE according to the PDCCH ORDER. The processing unit 72 is further configured to: when the random access request of the UE is failed according to the random access request received by the transceiver unit 71, so that the number of random access failures of the UE reaches a predetermined threshold, the UE sends an RRC connection reestablishment request to the base station.

 Optionally, the transceiver unit 71 is specifically configured to: when the processing unit 72 detects an abnormal data transmission between the base station and the UE, send the air interface signaling with the integrity error to the UE, so that the UE receives the air interface signaling sent by the base station. After the integrity check is performed, the UE sends an RRC connection reestablishment request to the base station after the integrity protection fails.

 Optionally, the transceiver unit 71 is specifically configured to: when the processing unit 72 detects an abnormal data transmission between the base station and the UE, send an RRC connection reconfiguration command to the UE, where the RRC connection reconfiguration command carries the A cell, after the UE fails to perform the RRC connection reconfiguration or the RRC connection reconfiguration fails, initiates an RRC connection reestablishment to the base station.

 Optionally, the transceiver unit 71 is specifically configured to: when the processing unit 72 detects a data transmission abnormality between the base station and the UE, send a handover command to the UE, where the handover command carries the second cell used to disable the UE handover. In order to cause the UE to fail handover, the RRC connection reestablishment is sent to the base station.

 Optionally, the processing unit 72 is configured to detect whether the data transmission between the base station and the UE is normal, including any one or any combination of the following:

 Detecting according to the retransmission ratio of the data transmission, if the retransmission ratio exceeds the retransmission ratio threshold, determining that the data transmission is abnormal;

 And detecting, according to the error rate of the data transmission, if the error rate exceeds the error rate threshold, determining that the data transmission is abnormal;

 And detecting, according to the uplink time advance TA measurement value, if the TA measurement value is invalid or the fluctuation of the TA measurement value exceeds a TA fluctuation threshold, determining a data transmission abnormality; and performing, according to the uplink signal quality of the UE, detecting If the uplink signal quality is lower than the uplink signal quality threshold, determining that the data transmission is abnormal;

 It is used to detect an uplink physical channel, and if the uplink physical channel detection fails, it is determined that the data transmission is abnormal.

When the data transmission between the base station and the UE is abnormal, the UE sends a signaling to the UE, so that the UE initiates an RRC connection re-establishment process according to the signaling, and implements active control of the RRC connection reestablishment of the UE by the base station when the data transmission is abnormal, that is, the active triggering The UE initiates an RRC connection reestablishment, which avoids data transmission interruption. This embodiment can recover the data connection as soon as possible when the data transmission is abnormal, and reduce The impact on data transmission.

 Example eight

 8 is a schematic structural diagram of a second embodiment of a base station according to the present invention. As shown in FIG. 8, the base station includes: a processor 81, a transceiver 80, a memory 82, a bus 83, and a communication interface 84. The processor 81, the transceiver 80, and The memory 82 can be connected by a bus 83, wherein the memory 82 is used for storing instructions, and the processor 81 executes the instructions stored in the memory 82 to perform the following processing: detecting whether the data transmission between the base station and the UE is normal;

 When the data transmission between the base station and the UE is abnormal, the transceiver 80 sends signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling;

 The transceiver 80 is further configured to receive an RRC connection reestablishment request sent by the UE.

 The processor 81 is further configured to process the foregoing RRC connection reestablishment request received by the transceiver 80. Optionally, the processor 81 sends the signaling to the UE by using the transceiver 80, including: sending, by the transceiver 80, a PDCCH ORDER to the UE, where the PDCCH ORDER is used to enable the UE to initiate random access to the base station.

 The transceiver 80 is configured to: after receiving the PDCCH ORDER to the UE, to: receive the random access request sent by the UE according to the PDCCH ORDER;

 The processor 81 is further configured to: according to the random access request received by the transceiver 80, the UE randomly fails to send, to send the RRC connection reestablishment request to the base station when the number of random access failures of the UE reaches a predetermined threshold. .

 Optionally, the processor 81 is further configured to construct the foregoing signaling and control the transceiver 80 to send the signaling to the UE.

 Optionally, the processor 81 sends the signaling to the UE by using the transceiver 80, including: sending, by the transceiver 80, the air interface signaling with the integrity error to the UE, so that the UE performs the integrity detection after receiving the air interface signaling sent by the base station. After the UE fails the integrity protection at the time of detection, the UE sends an RRC connection reestablishment request to the base station.

 Optionally, the processor 81 sends the signaling to the UE by using the transceiver 80, the method includes: sending, by the transceiver 80, an RRC connection reconfiguration command to the UE, where the RRC connection reconfiguration command carries the first cell that is not supported by the UE, After the UE fails to perform the RRC connection reconfiguration or fails the RRC connection reconfiguration, the RRC connection reestablishment request is sent to the base station.

Optionally, the processor 81 sends the signaling to the UE by using the transceiver 80, and the method includes: sending, by using the transceiver 80, a handover command to the UE, where the handover command carries a second cell, where the UE fails to switch, to enable the UE After the handover fails, an RRC connection reestablishment request is initiated to the base station. Optionally, the processor 81 detects whether the data transmission between the base station and the UE is normal, including any one or any combination of the following:

 And detecting, according to the retransmission ratio of the data transmission, if the retransmission ratio exceeds the retransmission proportional threshold, determining that the data transmission is abnormal;

 And detecting, according to the error rate of the data transmission, if the error rate exceeds the error rate threshold, determining that the data transmission is abnormal;

 And detecting, according to the uplink time advance TA measurement value, if the TA measurement value is invalid or the fluctuation of the TA measurement value exceeds a TA fluctuation threshold, determining a data transmission abnormality; and performing, according to the uplink signal quality of the UE, detecting If the uplink signal quality is lower than the uplink signal quality threshold, determining that the data transmission is abnormal;

 It is used to detect an uplink physical channel, and if the uplink physical channel detection fails, it is determined that the data transmission is abnormal.

 The processor 81 described above can perform any of the foregoing methods, and this embodiment is merely illustrative.

 When the data transmission between the base station and the UE is abnormal, the UE sends a signaling to the UE, so that the UE initiates an RRC connection re-establishment process according to the signaling, and implements active control of the RRC connection reestablishment of the UE by the base station when the data transmission is abnormal, that is, the active triggering The UE initiates an RRC connection reestablishment, which avoids data transmission interruption. This embodiment can recover the data connection as soon as possible when the data transmission is abnormal, and reduce the impact on the data transmission.

 One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above can be accomplished by software or hardware associated with the program instructions. The aforementioned program can be stored in a readable storage medium. The program, when executed, performs the steps including the above-described method embodiments; and the foregoing storage medium includes: a medium that can store a program code such as a ROM, a RAM, a magnetic disk, or an optical disk.

 It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

claims 1. A base station, characterized by including: processing unit and transceiver unit; The processing unit is used to detect whether the data transmission between the base station and the user equipment UE is normal; The processing unit is also configured to send signaling to the UE through the transceiver unit when detecting the data transmission abnormality, so that the UE sends radio resource control RRC to the base station according to the signaling. Connection reestablishment request; The transceiver unit is also used to receive the RRC connection reestablishment request; The processing unit is also configured to process the RRC connection reestablishment request received by the transceiver unit. 2. The base station according to claim 1, characterized in that the processing unit sends signaling to the UE through a transceiver unit, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling. , include: Send physical downlink control channel command PDCCH to the UE through the transceiver unit ORDER, the PDCCH ORDER is used to cause the UE to initiate random access to the base station; the transceiver unit is also used to receive a random access request sent by the UE according to the PDCCH ORDER; The processing unit is further configured to fail the random access of the UE according to the random access request received by the transceiver unit, so that when the number of random access failures of the UE reaches a predetermined threshold, the information sent to the base station is sent to the base station. Described RRC connection reestablishment request. 3. The base station according to claim 1, characterized in that the processing unit sends signaling to the UE through a transceiver unit, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling. , include: The air interface signaling with integrity error is sent to the UE through the transceiver unit, so that the UE sends the RRC connection reestablishment request to the base station after integrity protection fails when performing integrity detection on the air interface signaling. 4. The base station according to claim 1, characterized in that, the processing unit sends signaling to the UE through a transceiver unit, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling. , include: The RRC connection reconfiguration command is sent to the UE through the transceiver unit, and the RRC connection reconfiguration command carries the first information element that is not supported by the UE, so that the UE fails to perform RRC connection reconfiguration and reports to the base station. Send the RRC connection reestablishment request. 5. The base station according to claim 1, characterized in that the processing unit sends signaling to the UE through a transceiver unit, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling. , include: The switching command is sent to the UE through the transceiver unit, and the switching command carries the second information element that causes the UE to fail to switch, so that the UE sends the RRC connection reestablishment request to the base station after the UE fails to switch. 6. The base station according to any one of claims 1 to 5, characterized in that the processing unit is used to detect whether the data transmission between the base station and the UE is normal, including any one or any combination of the following: Used to detect based on the retransmission ratio of data transmission, and if the retransmission ratio exceeds the retransmission ratio threshold, determine that the data transmission is abnormal; Used to detect based on the bit error rate of data transmission. If the bit error rate exceeds the bit error rate threshold, determine that the data transmission is abnormal; Used to detect based on the uplink time advance TA measurement value, and if the TA measurement value is invalid or the fluctuation of the TA measurement value exceeds the TA fluctuation threshold, determine that the data transmission is abnormal; used to detect based on the uplink signal quality of the UE , if the uplink signal quality is lower than the uplink signal quality threshold, determine that the data transmission is abnormal; and Used to detect the uplink physical channel. If the uplink physical channel detection fails, it is determined that the data transmission is abnormal. 7. A method for radio resource control connection reestablishment, characterized by: the base station detecting whether the data transmission between the base station and the user equipment UE is normal; when the data transmission is abnormal, the base station transmits data to the user equipment UE. The UE sends signaling, so that the UE sends a radio resource control RRC connection reestablishment request to the base station according to the signaling; The base station receives and processes the RRC connection reestablishment request. 8. The method according to claim 7, characterized in that: the base station sends signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling, including: The base station sends a physical downlink control channel command PDCCH ORDER to the UE, and the PDCCH ORDER is used to cause the UE to initiate random access to the base station; After the base station sends the PDCCH ORDER to the UE, it further includes: the base station receiving a random access request sent by the UE according to the PDCCH ORDER, and causing the UE to fail random access according to the random access request, The RRC connection reestablishment request is sent to the base station when the number of random access failures of the UE reaches a predetermined threshold. 9. The method according to claim 7, characterized in that: the base station sends signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling, including: The base station sends the air interface signaling with integrity error to the UE, so that the UE sends the RRC connection reestablishment request to the base station after integrity protection fails when performing integrity detection on the air interface signaling. 10. The method according to claim 7, characterized in that: the base station sends signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling, including: The base station sends an RRC connection reconfiguration command to the UE, and the RRC connection reconfiguration command carries a first information element that is not supported by the UE, so that the UE fails to perform RRC connection reconfiguration and reports to the base station Send the RRC connection reestablishment request. 11. The method according to claim 7, wherein the base station sends signaling to the UE, so that the UE sends an RRC connection reestablishment request to the base station according to the signaling, including: The base station sends a handover command to the UE, and the handover command carries the second information element that causes the UE to fail the handover, so that the UE sends the RRC connection reestablishment request to the base station after the handover fails. 12. The method according to any one of claims 7 to 11, characterized in that the base station detects whether the data transmission between the base station and the UE is normal, including any one or any combination of the following: Detection is performed based on the retransmission ratio of data transmission. If the retransmission ratio exceeds the retransmission ratio threshold, it is determined that the data transmission is abnormal; Detection is performed based on the bit error rate of data transmission. If the bit error rate exceeds the bit error rate threshold, Determine data transmission abnormality; Detection is performed based on the uplink time advance TA measurement value. If the TA measurement value is invalid or the fluctuation of the TA measurement value exceeds the TA fluctuation threshold, it is determined that the data transmission is abnormal; Detection is performed based on the uplink signal quality of the UE. If the uplink signal quality is lower than the uplink signal quality threshold, it is determined that the data transmission is abnormal; and Detect the uplink physical channel. If the uplink physical channel detection fails, determine that the data transmission is abnormal. 13. A base station, characterized by including: Processors, transceivers and memories; The memory is used to store instructions; The processor executes instructions stored in the memory for: Detect whether the data transmission between the base station and the user equipment UE is normal; When the data transmission is abnormal, signaling is sent to the UE through the transceiver, so that the UE sends a radio resource control RRC connection reestablishment request to the base station according to the signaling; the transceiver, further Used to receive the RRC connection reestablishment request; The processor is also configured to process the RRC connection reestablishment request received by the transceiver. 14. The base station according to claim 13, wherein the processor is configured to send signaling to the UE through the transceiver, so that the UE sends an RRC connection to the base station according to the signaling. Rebuild requests, including: Used to send physical downlink control channel command PDCCH to the UE through the transceiver ORDER, the PDCCH ORDER is used to cause the UE to initiate random access to the base station; after the transceiver is used to send the PDCCH ORDER to the UE, it is also used to: receive the message sent by the UE according to the PDCCH ORDER. Random access request; The processor is further configured to cause the UE to fail random access according to the random access request received by the transceiver, so that when the number of random access failures of the UE reaches a predetermined threshold, the information is sent to the base station. Described RRC connection reestablishment request. 15. The base station according to claim 13, wherein the processor is configured to send signaling to the UE through the transceiver, so that the UE sends an RRC connection to the base station according to the signaling. Rebuild requests, including: Used to send integrity error air interface signaling to the UE through the transceiver, so that the The UE sends the RRC connection reestablishment request to the base station after integrity protection fails when performing integrity detection on the air interface signaling. 16. The base station according to claim 13, wherein the processor is configured to send signaling to the UE through the transceiver, so that the UE sends an RRC connection to the base station according to the signaling. Rebuild requests, including: Used to send an RRC connection reconfiguration command to the UE through the transceiver, where the RRC connection reconfiguration command carries a first information element that is not supported by the UE, so that the UE fails to perform RRC connection reconfiguration. Send the RRC connection reestablishment request to the base station. 17. The base station according to claim 13, wherein the processor is configured to send signaling to the UE through the transceiver, so that the UE sends an RRC connection to the base station according to the signaling. Rebuild requests, including: configured to send a switching command to the UE through the transceiver, where the switching command carries a second information element that causes the UE to fail to switch, so that the UE sends the RRC connection to the base station after the UE fails to switch. Rebuild request. 18. The base station according to any one of claims 13 to 17, characterized in that the processor is used to detect whether the data transmission between the base station and the UE is normal, including any one or any combination of the following: Used to detect based on the retransmission ratio of data transmission. If the retransmission ratio exceeds the retransmission ratio threshold, determine that the data transmission is abnormal; Used to detect based on the bit error rate of data transmission. If the bit error rate exceeds the bit error rate threshold, determine that the data transmission is abnormal; Used to detect based on the uplink time advance TA measurement value, and if the TA measurement value is invalid or the fluctuation of the TA measurement value exceeds the TA fluctuation threshold, determine that the data transmission is abnormal; used to detect based on the uplink signal quality of the UE , if the uplink signal quality is lower than the uplink signal quality threshold, determine that the data transmission is abnormal; and Used to detect the uplink physical channel. If the uplink physical channel detection fails, it is determined that the data transmission is abnormal.