CN108093470B - Method and device for processing uplink synchronization information between terminal and slave base station - Google Patents
Method and device for processing uplink synchronization information between terminal and slave base station Download PDFInfo
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Abstract
The invention provides a method and a device for processing uplink synchronous information between a terminal and a slave base station, wherein the processing method comprises the following steps: after triggering the random access process, feeding back a synchronization information indication representing an uplink synchronization result of the terminal to the main base station; receiving an operation instruction fed back by the main base station according to the synchronous information instruction; and carrying out corresponding resource service processing according to the operation instruction. According to the scheme, after the random access process is triggered, a synchronization information indication (namely handshake information of the MeNB and the SeNB) for indicating an uplink synchronization result of the terminal is fed back to the main base station, so that the MeNB can obtain the uplink synchronization information between the terminal and the SeNB in time; the situations that the MeNB triggers data forwarding and path updating when uplink synchronization between the terminal and the SeNB fails are avoided; and T maintained by SeNBDCoverallToo long or too short; the problem of the prior art that the MeNB can not obtain the uplink synchronization information of the UE and the SeNB, so that the opportunity for the MeNB or the SeNB to execute the subsequent flow is inaccurate is solved.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a method and an apparatus for processing uplink synchronization information between a terminal and a slave base station.
Background
With the continuous development of communication technology, users need networks to provide more convenient and faster large-flow data communication services. To meet this demand of users, communication network architectures are constantly evolving and enhancing. To meet this demand, The third Generation Partnership Project (3 GPP) proposes a network architecture in R12 that adds several micro base stations within The coverage of a macro base station, a so-called dual connectivity (multi-connectivity) architecture. In this system, a user can simultaneously maintain connection with two (or more) base stations to perform uplink and downlink communication. Of the two (or more) base stations that are simultaneously connected to the user, one base station is the MeNB (master base station) and is responsible for managing the system, and the other base stations are senbs (slave base stations).
In the procedure of adding, modifying and changing the SeNB, the UE (terminal) may need to perform uplink synchronization with the SeNB, and may perform data forwarding and path updating procedures.
However, in the existing protocol or scheme, during the addition, modification and update of the SeNB, the MeNB cannot obtain the uplink synchronization information of the UE and the SeNB, and when the uplink synchronization between the UE and the SeNB fails, the MeNB may have triggered data forwarding and path update. Meanwhile, since the specific time of the UE uplink synchronization cannot be fixed, the SeNB may need to maintain a relatively long dual-connection wait determination timer TDCoverallTo ensure that the reserved resources of the SCG from the cell are not occupied; or due to TDCoverallThe relative short results in the SeNB triggering the SeNB release procedure in advance.
Disclosure of Invention
The invention aims to provide a method and a device for processing uplink synchronization information between a terminal and a secondary base station, which solve the problem that in the prior art, an MeNB cannot obtain the uplink synchronization information of UE and an SeNB, so that the opportunity for the MeNB or the SeNB to execute a subsequent process is inaccurate.
In order to solve the above technical problem, an embodiment of the present invention provides a method for processing uplink synchronization information between a terminal and a slave base station, which is applied to the slave base station, and includes:
after triggering the random access process, feeding back a synchronization information indication representing an uplink synchronization result of the terminal to the main base station;
receiving an operation instruction fed back by the main base station according to the synchronous information instruction;
and carrying out corresponding resource service processing according to the operation instruction.
Optionally, before triggering the random access procedure, the method further includes:
receiving a reconfiguration completion message sent by the main base station in the running process of a double-connection waiting determination timer;
after receiving the configuration completion message, executing the step of triggering a random access procedure;
the step of feeding back the synchronization information indication to the main base station after triggering the random access process comprises:
after triggering a random access flow and before the double-connection waiting determination timer is overtime, if the terminal finishes an uplink synchronization process, feeding back a synchronization information indication that the uplink synchronization is successful to the main base station, and stopping the operation of the double-connection waiting determination timer;
if the terminal does not finish the uplink synchronization process before the double-connection waiting determination timer is overtime, feeding back a synchronization information indication of uplink synchronization failure to the main base station, and stopping the operation of the double-connection waiting determination timer.
Optionally, after receiving the configuration completion message, the step of executing the random access procedure triggering includes:
triggering a timing timer after receiving the reconfiguration complete message;
before the timing timer is overtime, an uplink access request sent by a terminal is received, the timing timer is stopped, and a random access flow is triggered;
otherwise, feeding back the synchronization information indication of uplink synchronization failure to the main base station.
Optionally, if the step of the random access procedure is triggered, before receiving the reconfiguration complete message sent by the master base station; the step of feeding back the synchronization information indication to the primary base station after triggering the random access procedure includes:
after a random access flow is triggered, judging whether the terminal completes uplink synchronization before the double connection waiting determination timer is overtime when the double connection waiting determination timer runs;
if the uplink synchronization is finished, feeding back a synchronization information indication of successful uplink synchronization to the main base station, and stopping the operation of the double-connection waiting determination timer;
otherwise, feeding back the synchronization information indication of uplink synchronization failure to the main base station, and stopping the operation of the dual-connection waiting determination timer.
Optionally, the method further includes:
if the dual-connection waiting determination timer runs after the random access process is triggered and a reconfiguration completion message sent by the main base station is received before the terminal completes uplink synchronization, the dual-connection waiting determination timer is stopped from running and no synchronization information indication is fed back to the main base station.
Optionally, the step of performing corresponding resource service processing according to the operation instruction includes:
triggering a data forwarding process when the operation indication is a reconfiguration completion message;
and releasing the slave cell resources when the operation indication is a resource release message.
The invention also provides a method for processing the uplink synchronization information between the terminal and the slave base station, which is applied to the master base station and comprises the following steps:
receiving a synchronization information indication which is sent from a base station and represents an uplink synchronization result of a terminal;
and feeding back a corresponding operation instruction to the slave base station according to the synchronous information instruction.
Optionally, the step of feeding back a corresponding operation instruction to the slave base station according to the synchronization information instruction includes:
when the synchronization information indication indicates that the uplink synchronization of the terminal is successful, feeding back an operation indication for data forwarding to the slave base station;
and when the synchronization information indication indicates that the uplink synchronization of the terminal fails, feeding back an operation indication for releasing the cell resource to the slave base station.
Optionally, the step of feeding back an operation instruction for data forwarding to the slave base station includes:
and feeding back an operation instruction for data forwarding to the slave base station through the reconfiguration completion message.
Optionally, the step of feeding back an operation instruction for releasing the secondary cell resource to the secondary base station includes:
and feeding back an operation instruction for releasing the secondary cell resources to the secondary base station through a resource release message.
The invention also provides a device for processing uplink synchronization information between the terminal and the slave base station, which is applied to the slave base station and comprises:
the first feedback module is used for feeding back a synchronization information indication representing an uplink synchronization result of the terminal to the main base station after the random access process is triggered;
a first receiving module, configured to receive an operation instruction fed back by the master base station according to the synchronization information instruction;
and the first processing module is used for processing the corresponding resource service according to the operation instruction.
Optionally, the method further includes:
a second receiving module, configured to receive a reconfiguration complete message sent by the master base station during a running process of a dual connectivity wait determination timer before triggering a random access procedure;
an execution module, configured to execute the operation of triggering the random access procedure after receiving the configuration completion message;
the first feedback module comprises:
a first processing sub-module, configured to, after triggering a random access procedure and before the dual connectivity wait determination timer times out, if the terminal completes an uplink synchronization process, feed back a synchronization information indication that uplink synchronization is successful to the main base station, and stop operation of the dual connectivity wait determination timer;
and the second processing submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station and stopping the operation of the double-connection waiting determination timer if the terminal does not finish the uplink synchronization process before the double-connection waiting determination timer is overtime.
Optionally, the executing module includes:
the first triggering submodule is used for triggering a timing timer after the reconfiguration completion message is received;
a third processing submodule, configured to stop the timer and trigger a random access procedure when receiving an uplink access request sent by a terminal before the timer expires;
and the first feedback submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station if the uplink synchronization failure does not occur.
Optionally, if the operation of the random access procedure is triggered, before the reconfiguration complete message sent by the master base station is received; the first feedback module comprises:
the judging submodule is used for judging whether the terminal completes uplink synchronization before the double connection waiting determination timer is overtime after the random access flow is triggered and the double connection waiting determination timer runs;
a fourth processing submodule, configured to feed back a synchronization information indication indicating that uplink synchronization is successful to the main base station and stop operation of the dual connectivity wait determination timer if the synchronization is completed;
and the fifth processing submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station and stopping the operation of the double-connection waiting and determining timer if the uplink synchronization failure occurs.
Optionally, the method further includes:
and the second processing module is used for stopping the operation of the double-connection waiting determination timer and not feeding back a synchronization information indication to the main base station if the double-connection waiting determination timer is in operation after the random access process is triggered and a reconfiguration completion message sent by the main base station is received before the terminal completes uplink synchronization.
Optionally, the first processing module includes:
the second triggering submodule is used for triggering a data forwarding process when the operation indication is a reconfiguration completion message;
and the release submodule is used for releasing the resources of the slave cell when the operation instruction is the resource release message.
The invention also provides a device for processing the uplink synchronization information between the terminal and the slave base station, which is applied to the master base station and comprises the following components:
a third receiving module, configured to receive a synchronization information indication indicating an uplink synchronization result of the terminal sent from the base station;
and the second feedback module is used for feeding back a corresponding operation instruction to the slave base station according to the synchronous information instruction.
Optionally, the second feedback module includes:
a second feedback sub-module, configured to feed back, to the slave base station, an operation instruction for performing data forwarding when the synchronization information instruction indicates that uplink synchronization of the terminal is successful;
and a third feedback sub-module, configured to feed back, to the slave base station, an operation instruction for releasing the slave cell resource when the synchronization information indication indicates that the uplink synchronization of the terminal fails.
Optionally, the second feedback sub-module includes:
a first feedback unit, configured to feed back, to the slave base station, an operation instruction for performing data forwarding through the reconfiguration complete message.
Optionally, the third feedback sub-module includes:
a second feedback unit, configured to feed back, to the slave base station, an operation instruction for releasing the secondary cell resource through a resource release message.
The technical scheme of the invention has the following beneficial effects:
in the above scheme, the method for processing uplink synchronization information between the terminal and the secondary base station feeds back a synchronization information indication (that is, adds handshake information of the MeNB and the SeNB) indicating an uplink synchronization result of the terminal to the primary base station after triggering the random access procedure, so that the MeNB can obtain the uplink synchronization information between the terminal and the SeNB in time; the situations that the MeNB triggers data forwarding and path updating when uplink synchronization between the terminal and the SeNB fails are avoided; and T maintained by SeNBDCoverallToo long or too short(ii) a condition; the problem of the prior art that the MeNB can not obtain the uplink synchronization information of the UE and the SeNB, so that the opportunity for the MeNB or the SeNB to execute the subsequent flow is inaccurate is solved.
Drawings
Fig. 1 is a flowchart illustrating a method for processing uplink synchronization information between a terminal and a slave base station according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for processing uplink synchronization information between a terminal and a secondary base station according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of adding handshake information between a slave base station and a master base station according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a terminal uplink failure flow according to an embodiment of the present invention;
fig. 5 is a first exemplary process flow diagram of a slave base station according to an embodiment of the present invention;
fig. 6 is a secondary base station processing flow diagram according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a slave base station adding process according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a device for processing uplink synchronization information between a terminal and a slave base station according to a third embodiment of the present invention;
fig. 9 is a schematic structural diagram of a device for processing uplink synchronization information between a terminal and a slave base station according to a fourth embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides various solutions for solving the problem that in the prior art, the MeNB cannot obtain uplink synchronization information of the UE and the SeNB, so that the opportunity for the MeNB or the SeNB to execute the subsequent process is inaccurate, and the method specifically comprises the following steps:
example one
As shown in fig. 1, a method for processing uplink synchronization information between a terminal and a slave base station according to an embodiment of the present invention is applicable to the slave base station, and includes:
step 11: after triggering the random access process, feeding back a synchronization information indication representing an uplink synchronization result of the terminal to the main base station;
step 12: receiving an operation instruction fed back by the main base station according to the synchronous information instruction;
step 13: and carrying out corresponding resource service processing according to the operation instruction.
In the method for processing uplink synchronization information between the terminal and the secondary base station provided in the first embodiment of the present invention, after triggering the random access procedure, a synchronization information indication (that is, handshake information of the MeNB and the SeNB is added) indicating an uplink synchronization result of the terminal is fed back to the primary base station, so that the MeNB can obtain the uplink synchronization information between the terminal and the SeNB in time; the situations that the MeNB triggers data forwarding and path updating when uplink synchronization between the terminal and the SeNB fails are avoided; and T maintained by SeNBDCoverallToo long or too short; the problem of the prior art that the MeNB can not obtain the uplink synchronization information of the UE and the SeNB, so that the opportunity for the MeNB or the SeNB to execute the subsequent flow is inaccurate is solved.
In this embodiment, the sequence of receiving the configuration completion message and triggering the random access procedure may be interchanged:
corresponding to the situation before the configuration completion message is received, in this embodiment, before triggering the random access procedure, the method further includes: receiving a reconfiguration completion message sent by the main base station in the running process of a double-connection waiting determination timer; after receiving the configuration completion message, executing the step of triggering a random access procedure;
specifically, after triggering the random access procedure, the step of feeding back the synchronization information indication to the master base station includes: after triggering a random access flow and before the double-connection waiting determination timer is overtime, if the terminal finishes an uplink synchronization process, feeding back a synchronization information indication that the uplink synchronization is successful to the main base station, and stopping the operation of the double-connection waiting determination timer;
if the terminal does not finish the uplink synchronization process before the double-connection waiting determination timer is overtime, feeding back a synchronization information indication of uplink synchronization failure to the main base station, and stopping the operation of the double-connection waiting determination timer.
In order to increase the processing speed, after receiving the configuration completion message, the step of executing the random access procedure triggering includes: triggering a timing timer after receiving the reconfiguration complete message; before the timing timer is overtime, an uplink access request sent by a terminal is received, the timing timer is stopped, and a random access flow is triggered; otherwise, feeding back the synchronization information indication of uplink synchronization failure to the main base station.
Corresponding to the situation before the random access process is triggered, in this embodiment, if the step of triggering the random access process is performed, before the reconfiguration complete message sent by the master base station is received; the step of feeding back the synchronization information indication to the primary base station after triggering the random access procedure includes: after a random access flow is triggered, judging whether the terminal completes uplink synchronization before the double connection waiting determination timer is overtime when the double connection waiting determination timer runs;
if the uplink synchronization is finished, feeding back a synchronization information indication of successful uplink synchronization to the main base station, and stopping the operation of the double-connection waiting determination timer; otherwise, feeding back the synchronization information indication of uplink synchronization failure to the main base station, and stopping the operation of the dual-connection waiting determination timer.
Further, the processing method further comprises: if the dual-connection waiting determination timer runs after the random access process is triggered and a reconfiguration completion message sent by the main base station is received before the terminal completes uplink synchronization, the dual-connection waiting determination timer is stopped from running and no synchronization information indication is fed back to the main base station.
In view of the practical application situation, in this embodiment, the step of performing corresponding resource service processing according to the operation instruction includes: triggering a data forwarding process when the operation indication is a reconfiguration completion message; and releasing the slave cell resources when the operation indication is a resource release message.
Example two
As shown in fig. 2, a second embodiment of the present invention provides a method for processing uplink synchronization information between a terminal and a slave base station, which is applicable to a master base station, and includes:
step 21: receiving a synchronization information indication which is sent from a base station and represents an uplink synchronization result of a terminal;
step 22: and feeding back a corresponding operation instruction to the slave base station according to the synchronous information instruction.
The processing method of the uplink synchronization information between the terminal and the secondary base station provided by the second embodiment of the present invention can obtain the uplink synchronization information between the terminal and the SeNB in time by receiving the synchronization information indication indicating the uplink synchronization result of the terminal sent from the secondary base station; the situations that the MeNB triggers data forwarding and path updating when uplink synchronization between the terminal and the SeNB fails are avoided; and T maintained by SeNBDCoverallToo long or too short; the problem of the prior art that the MeNB can not obtain the uplink synchronization information of the UE and the SeNB, so that the opportunity for the MeNB or the SeNB to execute the subsequent flow is inaccurate is solved.
Specifically, the step of feeding back a corresponding operation instruction to the slave base station according to the synchronization information instruction includes: when the synchronization information indication indicates that the uplink synchronization of the terminal is successful, feeding back an operation indication for data forwarding to the slave base station; and when the synchronization information indication indicates that the uplink synchronization of the terminal fails, feeding back an operation indication for releasing the cell resource to the slave base station.
Preferably, the step of feeding back an operation instruction for data forwarding to the slave base station includes: feeding back an operation instruction for data forwarding to the slave base station through the reconfiguration completion message; the step of feeding back to the slave base station an operation instruction to release the secondary cell resources comprises: and feeding back an operation instruction for releasing the secondary cell resources to the secondary base station through a resource release message.
The following further describes the method for processing uplink synchronization information between a terminal and a slave base station according to the embodiment of the present invention, with reference to the two sides of the master base station and the slave base station.
In order to solve the above technical problem, in the embodiment of the present invention, handshake information is added between the MeNB and the SeNB, as shown in fig. 3, the handshake information of the newly added MeNB and SeNB is named SeNB synchronization Indication (SeNB synchronization information Indication), where a specific name is not limited, and the specific information is shown in table 1, but is not limited to the content in table 1:
TABLE 1
The SeNB notifies the uplink synchronization result of the MeNB UE:
the original flow of the UE side of the terminal is unchanged, if it is determined that uplink synchronization with the PSCell fails, SCG Failure Information is sent through EUTRAN (evolved terrestrial radio access network) to notify the MeNB, the cause value of the Failure is randomaccessfervessrelease, and as shown in fig. 4, the UE side waits for the MeNB reconfiguration message to perform subsequent processing. And if the uplink synchronization with the PSCell is successful, entering a double-connection state.
The SeNB processing flow is shown in fig. 5, and includes:
step 51: judgment of TDCoverallIn operation, whether a reconfiguration completion message is received first; if yes, go to step 52, if no, go to step 55;
step 52: t isDCoverallContinuing, judging whether the terminal completes uplink synchronization before timeout, if so, entering a step 53, and if not, entering a step 54;
step 53: termination TDCoverallThe SeNB informs the success of the uplink synchronization between the MeNB terminal and the SeNB through the SeNB synchronization Indication;
step 54: t isDCoverallWhen the time is out, the SeNB informs the upstream synchronization failure of the MeNB terminal and the SeNB through the SeNB synchronization Indication;
step 55: judgment of TDCoverallIn operation, whether a terminal uplink synchronization request is received first, and TDCoverallBefore timeout, finishing uplink synchronization, if yes, entering step 53, and if not, entering step 56;
step 56: judgment of TDCoverallWhether the terminal is in operation before uplink synchronization is completedReceiving a reconfiguration completion message of the MeNB or a SeNB release instruction; if yes, go to step 57, otherwise, go to step 52;
and 57: termination TDCoverallAnd completing the SeNB establishment or the memorial SeNB deletion according to the received message.
That is, if at TDCoverallIn operation, when the SeNB receives the reconfiguration complete message first, TDCoverallContinuing timing; if at TDCoverallBefore timeout, UE completes the uplink synchronization process, and then the SeNB notifies the MeNB of successful synchronization through the SeNB synchronization information and stops TDCoverall(ii) a Otherwise if TDCoverallIf the UE does not complete uplink synchronization yet after time out, the SeNB notifies the MeNB of synchronization failure through the SeNB synchronization information, and at this time, if the UE is trying to perform uplink synchronization, the MeNB may obtain related information in time, notify the SeNB to release related resources, and reconfigure the UE.
If at TDCoverallWhen the UE runs, the SeNB receives the uplink synchronous message of the UE firstly, and then the uplink synchronous message is sent according to the TDCoverallAnd before time out, whether the UE completes uplink synchronization is judged. If the uplink synchronization is successful, the SeNB informs the MeNB of the successful synchronization through the SeNB synchronization information, and stops TDCoverall(ii) a Otherwise if at TDCoverallIn operation, if receiving the reconfiguration complete message of the MeNB before the uplink synchronization of the UE is not completed, it means that the MeNB has received the SCG failure message, and the SeNB only needs to stop TDCoverallNo SeNB synchronization information notification MeNB needs to be sent.
Further, in the solution of the embodiment of the present invention, a timer may be added, as shown in fig. 6, including:
step 61: judging whether the SeNB has received the uplink access request of the terminal when receiving the SeNB Reconfiguration Complete or the SeNB Modification Confirm (SeNB Modification Confirm indication), if so, entering step 62, otherwise, entering step 67;
step 62: judging whether the uplink synchronization of the terminal is successful, if so, entering a step 64, and if not, entering a step 63;
and step 63: the terminal notifies the MeNB SCG fail;
step 64: judging whether the state transfer of the serial number SN of the MeNB or the data forwarding is finished, if so, entering a step 65, and if not, entering a step 66;
step 65: the method comprises the following steps that the SeNB notifies the uplink synchronization information of the MeNB terminal and the SeNB through the SeNB synchronization Indication;
and step 66: the MeNB performs state transfer of a serial number SN or data forwarding, and then enters step 65;
step 67: starting a timer, judging whether an uplink access request of the terminal is received before the timer is overtime, if so, entering a step 68, and if not, entering a step 65;
step 68: the timer is terminated and step 62 is entered.
That is, the SeNB receives the SeNB Reconfiguration Complete or SeNB Modification Confirm (SeNB Modification Confirm) and then determines whether or not the uplink access request of the terminal has been received. If the uplink access request of the terminal is received, after the access is successful, the MeNB terminal is notified of successful uplink synchronization with the SeNB through the new interface message, and the new interface message can be defined as SeNB synchronization Indication.
And if the uplink access of the terminal fails, the terminal informs the MeNB through an SCG failure message. If the SeNB has not received the uplink access request of the terminal after receiving the SeNB Reconfiguration Complete indication, a timer is triggered (the length of the timer is greater than the time length required by the uplink access process of the terminal). And before the timer is overtime, if the uplink access request of the terminal is received, the timer is terminated. And if the timer still does not receive the uplink access request of the terminal after the timeout, notifying the MeNB terminal of the uplink synchronization failure on the SeNB through an SeNB synchronization Indication message.
Wherein, the original process of the MeNB side is not changed, and the process of the SeNB Syncronization Indication is added. And if the synchronization is indicated to be successful, sending an SeNB configuration Complete to the SeNB and triggering a data forwarding process, and if the synchronization is indicated to be failed, sending an SeNB Release Request to the SeNB and notifying the Release of the corresponding SCG resource.
Specifically, if the SeNB synchronization Indication received by the MeNB indicates that the terminal has succeeded in uplink synchronization, it is determined whether SN state transfer and data forwarding have been completed. If the path updating process is finished, triggering a path updating process; otherwise, after the SN state transfer and the data forwarding are finished, a path updating process is triggered.
And if the MeNB receives an uplink synchronization failure or SCG failure Indication indicated by the SeNB synchronization Indication, the MeNB indicates the SeNB to enter a release flow or does not need to initiate an addition application to the SeNB again, and the terminal is directly notified to perform the addition flow of the SeNB again through an RRC connection reconfiguration message. The specific implementation is left to the MeNB.
Taking the adding flow of the SeNB as an example, the signaling flow is shown in fig. 7, and the scheme provided by the embodiment of the present invention is to add a new handshake message in the step between step 78 and step 710. After the SeNB obtains the uplink synchronization request (76.Random Access Procedure-Random Access Procedure) of the UE, it sends SeNB SyncronizeIndication to notify the MeNB of the related synchronization information (such as Random Access Procedure information). The sending sequence between the SN state transition (77.SN Status Transfer) and the Data Forwarding (78.Data Forwarding) and the new message is not limited here.
Taking fig. 7 as an example, the scheme of the embodiment of the present invention includes:
step 71: and the MeNB sends a slave base station addition request to the SeNB, and carries slave cell configuration information.
When the MeNB requires the SeNB to allocate radio resources for a specific E-RAB, a SeNB Addition Request (Addition Request from the base station) is sent to the SeNB. The message carries the relevant bearer E-RAB characteristic parameters (E-RAB related parameters, transport network layer TNL address information corresponding to the bearer type). In addition, the MeNB also needs to carry MeNB configuration information and capability information of the UE in SCG-ConfigInfo (secondary cell configuration information), which is used as basic information for the SeNB to configure. The MeNB also needs to provide measurements to be added as SCG cells (secondary cells).
Step 72: and the SeNB sends a slave base station addition request confirmation to the MeNB, and carries the slave cell configuration.
If the radio resource management module of the SeNB can accept the admission request, corresponding radio resources are allocated and transmittedAnd (5) transmitting network resources. In order to achieve synchronization of the SeNB radio resource configuration, the SeNB triggers a random access procedure. The SeNB sends SeNB Addition Request acknowledgement to the MeNB. And carries the radio resource information of the new SCG in the SCG-Config (slave cell configuration). In case of SCG bearer, SeNB also needs to provide S1DL TNL (interface downlink transport network layer of core network and base station) address information and security algorithm, and in case of split bearer, also needs to provide X2DL TNL (interface downlink transport network layer of base station and base station) address information. Initiating correlated T simultaneouslyDCoverall(Dual connection wait determination timer).
Step 73: the MeNB sends an RRC connection reconfiguration message to the terminal.
If the MeNB receives the new configuration, the MeNB may send an RRC Connection Reconfiguration message to the UE, and carry new SCG radio resource configuration information corresponding to the SCG-configuration in the message.
Step 74: the terminal sends an RRC connection reconfiguration complete message to the MeNB.
The UE uses the new configuration information and replies an RRC Connection Reconfiguration Complete message to the MeNB, and if the UE cannot Complete all or part of the configuration of the RRC Connection Reconfiguration, the UE performs a Reconfiguration failure procedure.
Step 75: the MeNB sends a SeNB reconfiguration complete message to the SeNB.
The MeNB notifies the SeNB UE of the successful completion of the Reconfiguration procedure through a SeNB Reconfiguration Complete message. SeNB stops relevant TDCoverall。
Step 76: and the SeNB triggers a random access process of the terminal.
The UE synchronizes with the PSCell (primary cell) packet switched cell of the SeNB.
Step 77: sequence number state transition.
Step 78: and (4) forwarding data.
In step 77 or step 78, if it is SCG bearer, according to the characteristics of the specified E-RAB, the MeNB needs to actively reduce service interruption (data forwarding is needed, and SN status transmission of serial number) caused by dual connectivity activation.
Step 79: the SeNB sends a new message-SeNB synchronization information indication to the MeNB.
Step 710: the MeNB sends an E-RAB Modification Indication (core network bearer Modification Indication) to the MME (mobility management entity).
Step 711: the MME triggers the S-GW (GPRS support node server) to carry out Bearer modification.
Step 712: the S-GW sends an End Marker Packet (End Marker Packet) to the SeNB through the MeNB.
Step 713: the MME sends an E-RAB Modification configuration (core network Modification acknowledgement) to the MeNB.
Steps 710 to 713 belong to a Path Update procedure; for SCG bearers, an uplink path update procedure between the SCG bearer and the EPC (core network of the 4G mobile communication network) needs to be performed.
As can be seen from the above, in the scheme provided by the embodiment of the present invention, by increasing the handshake information between the MeNB and the SeNB, the MeNB can obtain the uplink synchronization information of the UE and the SeNB in time, and the problem that the MeNB cannot obtain the uplink synchronization information of the UE and the SeNB, which results in inaccurate timing for the MeNB or the SeNB to execute the subsequent process is solved.
EXAMPLE III
As shown in fig. 8, a third embodiment of the present invention provides an apparatus for processing uplink synchronization information between a terminal and a slave base station, which is applicable to the slave base station, and includes:
a first feedback module 81, configured to feed back, to the primary base station, a synchronization information indication indicating an uplink synchronization result of the terminal after triggering the random access procedure;
a first receiving module 82, configured to receive an operation instruction fed back by the master base station according to the synchronization information instruction;
and the first processing module 83 is configured to perform corresponding resource service processing according to the operation instruction.
In the apparatus for processing uplink synchronization information between a terminal and a slave base station provided in the third embodiment of the present invention, after triggering a random access procedure, a feedback indicating the uplink synchronization result of the terminal is sent to a master base stationStep information indication (namely, handshake information of the MeNB and the SeNB is added), so that the MeNB can obtain uplink synchronization information between the terminal and the SeNB in time; the situations that the MeNB triggers data forwarding and path updating when uplink synchronization between the terminal and the SeNB fails are avoided; and T maintained by SeNBDCoverallToo long or too short; the problem of the prior art that the MeNB can not obtain the uplink synchronization information of the UE and the SeNB, so that the opportunity for the MeNB or the SeNB to execute the subsequent flow is inaccurate is solved.
In this embodiment, the sequence of receiving the configuration completion message and triggering the random access procedure may be interchanged:
in response to the situation before receiving the configuration completion message, in this embodiment, the processing apparatus further includes: a second receiving module, configured to receive a reconfiguration complete message sent by the master base station during a running process of a dual connectivity wait determination timer before triggering a random access procedure; an execution module, configured to execute the operation of triggering the random access procedure after receiving the configuration completion message;
specifically, the first feedback module includes: a first processing sub-module, configured to, after triggering a random access procedure and before the dual connectivity wait determination timer times out, if the terminal completes an uplink synchronization process, feed back a synchronization information indication that uplink synchronization is successful to the main base station, and stop operation of the dual connectivity wait determination timer;
and the second processing submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station and stopping the operation of the double-connection waiting determination timer if the terminal does not finish the uplink synchronization process before the double-connection waiting determination timer is overtime.
In order to increase the processing speed, the execution module comprises: the first triggering submodule is used for triggering a timing timer after the reconfiguration completion message is received; a third processing submodule, configured to stop the timer and trigger a random access procedure when receiving an uplink access request sent by a terminal before the timer expires; and the first feedback submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station if the uplink synchronization failure does not occur.
Corresponding to the situation before the random access process is triggered, in this embodiment, if the operation of the random access process is triggered, before the reconfiguration complete message sent by the master base station is received; the first feedback module comprises: the judging submodule is used for judging whether the terminal completes uplink synchronization before the double connection waiting determination timer is overtime after the random access flow is triggered and the double connection waiting determination timer runs;
a fourth processing submodule, configured to feed back a synchronization information indication indicating that uplink synchronization is successful to the main base station and stop operation of the dual connectivity wait determination timer if the synchronization is completed; and the fifth processing submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station and stopping the operation of the double-connection waiting and determining timer if the uplink synchronization failure occurs.
Further, the processing device further comprises: and the second processing module is used for stopping the operation of the double-connection waiting determination timer and not feeding back a synchronization information indication to the main base station if the double-connection waiting determination timer is in operation after the random access process is triggered and a reconfiguration completion message sent by the main base station is received before the terminal completes uplink synchronization.
In consideration of practical application, in this embodiment, the first processing module includes: the second triggering submodule is used for triggering a data forwarding process when the operation indication is a reconfiguration completion message; and the release submodule is used for releasing the resources of the slave cell when the operation instruction is the resource release message.
The above-described implementation embodiments of the method for processing uplink synchronization information between the terminal on the slave base station side and the slave base station are all applied to the embodiment of the apparatus for processing uplink synchronization information between the terminal and the slave base station, and the same technical effects can be achieved.
Example four
As shown in fig. 9, a fourth embodiment of the present invention provides an apparatus for processing uplink synchronization information between a terminal and a slave base station, which is applicable to a master base station, and includes:
a third receiving module 91, configured to receive a synchronization information indicator indicating an uplink synchronization result of the terminal sent from the base station;
a second feedback module 92, configured to feed back a corresponding operation instruction to the slave base station according to the synchronization information instruction.
The processing device for uplink synchronization information between the terminal and the secondary base station provided by the fourth embodiment of the present invention can obtain the uplink synchronization information between the terminal and the SeNB in time by receiving the synchronization information indication indicating the uplink synchronization result of the terminal sent from the base station; the situations that the MeNB triggers data forwarding and path updating when uplink synchronization between the terminal and the SeNB fails are avoided; and T maintained by SeNBDCoverallToo long or too short; the problem of the prior art that the MeNB can not obtain the uplink synchronization information of the UE and the SeNB, so that the opportunity for the MeNB or the SeNB to execute the subsequent flow is inaccurate is solved.
Specifically, the second feedback module includes: a second feedback sub-module, configured to feed back, to the slave base station, an operation instruction for performing data forwarding when the synchronization information instruction indicates that uplink synchronization of the terminal is successful; and a third feedback sub-module, configured to feed back, to the slave base station, an operation instruction for releasing the slave cell resource when the synchronization information indication indicates that the uplink synchronization of the terminal fails.
Preferably, the second feedback sub-module includes: a first feedback unit, configured to feed back, to the slave base station, an operation instruction for performing data forwarding through a reconfiguration complete message; the third feedback sub-module includes: a second feedback unit, configured to feed back, to the slave base station, an operation instruction for releasing the secondary cell resource through a resource release message.
The above-described implementation embodiments of the method for processing uplink synchronization information between the terminal on the master base station side and the slave base station are all applied to the embodiment of the apparatus for processing uplink synchronization information between the terminal and the slave base station, and the same technical effects can be achieved.
It should be noted that many of the functional components described in this specification are referred to as modules/sub-modules in order to more particularly emphasize their implementation independence.
In embodiments of the invention, the modules/sub-modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (18)
1. A method for processing uplink synchronization information between a terminal and a slave base station is applied to the slave base station, and is characterized by comprising the following steps:
after triggering the random access process, feeding back a synchronization information indication representing an uplink synchronization result of the terminal to the main base station;
receiving an operation instruction fed back by the main base station according to the synchronous information instruction;
performing corresponding resource service processing according to the operation instruction;
if the dual-connection waiting determination timer runs after the random access process is triggered and a reconfiguration completion message sent by the main base station is received before the terminal completes uplink synchronization, the dual-connection waiting determination timer is stopped from running and no synchronization information indication is fed back to the main base station.
2. The processing method according to claim 1, further comprising, before triggering the random access procedure:
receiving a reconfiguration completion message sent by the main base station in the running process of a double-connection waiting determination timer;
after receiving the configuration completion message, executing the step of triggering a random access procedure;
the step of feeding back the synchronization information indication to the main base station after triggering the random access process comprises:
after triggering a random access flow and before the double-connection waiting determination timer is overtime, if the terminal finishes an uplink synchronization process, feeding back a synchronization information indication that the uplink synchronization is successful to the main base station, and stopping the operation of the double-connection waiting determination timer;
if the terminal does not finish the uplink synchronization process before the double-connection waiting determination timer is overtime, feeding back a synchronization information indication of uplink synchronization failure to the main base station, and stopping the operation of the double-connection waiting determination timer.
3. The processing method according to claim 2, wherein the step of performing the triggered random access procedure after receiving the configuration complete message comprises:
triggering a timing timer after receiving the reconfiguration complete message;
before the timing timer is overtime, an uplink access request sent by a terminal is received, the timing timer is stopped, and a random access flow is triggered;
otherwise, feeding back the synchronization information indication of uplink synchronization failure to the main base station.
4. The processing method according to claim 1, wherein if the step of triggering the random access procedure is performed, before receiving the reconfiguration complete message sent by the master base station; the step of feeding back the synchronization information indication to the primary base station after triggering the random access procedure includes:
after a random access flow is triggered, judging whether the terminal completes uplink synchronization before the double connection waiting determination timer is overtime when the double connection waiting determination timer runs;
if the uplink synchronization is finished, feeding back a synchronization information indication of successful uplink synchronization to the main base station, and stopping the operation of the double-connection waiting determination timer;
otherwise, feeding back the synchronization information indication of uplink synchronization failure to the main base station, and stopping the operation of the dual-connection waiting determination timer.
5. The processing method according to claim 4, wherein the step of performing the corresponding resource service processing according to the operation indication comprises:
triggering a data forwarding process when the operation indication is a reconfiguration completion message;
and releasing the slave cell resources when the operation indication is a resource release message.
6. A processing method of uplink synchronization information between a terminal and a slave base station is applied to a system, the system comprises a main base station and the slave base station, and the method is characterized by comprising the following steps:
receiving a synchronization information indication which is sent from a base station and represents an uplink synchronization result of a terminal;
feeding back a corresponding operation instruction to the slave base station according to the synchronous information instruction;
if the slave base station receives a reconfiguration completion message sent by the master base station after triggering a random access flow and during the operation of a dual-connection waiting determination timer and before the terminal completes uplink synchronization, the operation of the dual-connection waiting determination timer is stopped, and no synchronization information indication is fed back to the master base station.
7. The processing method according to claim 6, wherein the step of feeding back a corresponding operation instruction to the slave base station according to the synchronization information instruction comprises:
when the synchronization information indication indicates that the uplink synchronization of the terminal is successful, feeding back an operation indication for data forwarding to the slave base station;
and when the synchronization information indication indicates that the uplink synchronization of the terminal fails, feeding back an operation indication for releasing the cell resource to the slave base station.
8. The processing method according to claim 7, wherein the step of feeding back an operation instruction for data forwarding to the slave base station comprises:
and feeding back an operation instruction for data forwarding to the slave base station through the reconfiguration completion message.
9. The processing method according to claim 7, wherein the step of feeding back to the slave base station an operation indication for releasing the secondary cell resource comprises:
and feeding back an operation instruction for releasing the secondary cell resources to the secondary base station through a resource release message.
10. A processing device for uplink synchronization information between a terminal and a slave base station, which is applied to the slave base station, is characterized by comprising:
the first feedback module is used for feeding back a synchronization information indication representing an uplink synchronization result of the terminal to the main base station after the random access process is triggered;
a first receiving module, configured to receive an operation instruction fed back by the master base station according to the synchronization information instruction;
the first processing module is used for processing the corresponding resource service according to the operation instruction;
and the second processing module is used for stopping the operation of the double-connection waiting determination timer and not feeding back a synchronization information indication to the main base station if the double-connection waiting determination timer is in operation after the random access process is triggered and a reconfiguration completion message sent by the main base station is received before the terminal completes uplink synchronization.
11. The processing apparatus as in claim 10, further comprising:
a second receiving module, configured to receive a reconfiguration complete message sent by the master base station during a running process of a dual connectivity wait determination timer before triggering a random access procedure;
an execution module, configured to execute the operation of triggering the random access procedure after receiving the configuration completion message;
the first feedback module comprises:
a first processing sub-module, configured to, after triggering a random access procedure and before the dual connectivity wait determination timer times out, if the terminal completes an uplink synchronization process, feed back a synchronization information indication that uplink synchronization is successful to the main base station, and stop operation of the dual connectivity wait determination timer;
and the second processing submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station and stopping the operation of the double-connection waiting determination timer if the terminal does not finish the uplink synchronization process before the double-connection waiting determination timer is overtime.
12. The processing apparatus as in claim 11, wherein the execution module comprises:
the first triggering submodule is used for triggering a timing timer after the reconfiguration completion message is received;
a third processing submodule, configured to stop the timer and trigger a random access procedure when receiving an uplink access request sent by a terminal before the timer expires;
and the first feedback submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station if the uplink synchronization failure does not occur.
13. The processing apparatus according to claim 10, wherein if the operation of the random access procedure is triggered, before receiving the reconfiguration complete message sent by the master base station; the first feedback module comprises:
the judging submodule is used for judging whether the terminal completes uplink synchronization before the double connection waiting determination timer is overtime after the random access flow is triggered and the double connection waiting determination timer runs;
a fourth processing submodule, configured to feed back a synchronization information indication indicating that uplink synchronization is successful to the main base station and stop operation of the dual connectivity wait determination timer if the synchronization is completed;
and the fifth processing submodule is used for feeding back a synchronization information indication of uplink synchronization failure to the main base station and stopping the operation of the double-connection waiting and determining timer if the uplink synchronization failure occurs.
14. The processing apparatus of claim 13, wherein the first processing module comprises:
the second triggering submodule is used for triggering a data forwarding process when the operation indication is a reconfiguration completion message;
and the release submodule is used for releasing the resources of the slave cell when the operation instruction is the resource release message.
15. A processing system of uplink synchronization information between a terminal and a slave base station, the processing system comprises a master base station and the slave base station, and the master base station comprises:
a third receiving module, configured to receive a synchronization information indication indicating an uplink synchronization result of the terminal sent from the base station;
a second feedback module, configured to feed back a corresponding operation instruction to the slave base station according to the synchronization information instruction;
and the slave base station is used for stopping the operation of the double connection waiting and determining timer and not feeding back a synchronous information indication to the main base station if the double connection waiting and determining timer runs after the random access process is triggered and the reconfiguration finishing message sent by the main base station is received before the terminal finishes the uplink synchronization.
16. The processing system of claim 15, wherein the second feedback module comprises:
a second feedback sub-module, configured to feed back, to the slave base station, an operation instruction for performing data forwarding when the synchronization information instruction indicates that uplink synchronization of the terminal is successful;
and a third feedback sub-module, configured to feed back, to the slave base station, an operation instruction for releasing the slave cell resource when the synchronization information indication indicates that the uplink synchronization of the terminal fails.
17. The processing system of claim 16, wherein the second feedback sub-module comprises:
a first feedback unit, configured to feed back, to the slave base station, an operation instruction for performing data forwarding through the reconfiguration complete message.
18. The processing system of claim 16, wherein the third feedback sub-module comprises:
a second feedback unit, configured to feed back, to the slave base station, an operation instruction for releasing the secondary cell resource through a resource release message.
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