CN103561436B - A kind of network redirection method and device - Google Patents
A kind of network redirection method and device Download PDFInfo
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- CN103561436B CN103561436B CN201310542347.4A CN201310542347A CN103561436B CN 103561436 B CN103561436 B CN 103561436B CN 201310542347 A CN201310542347 A CN 201310542347A CN 103561436 B CN103561436 B CN 103561436B
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Abstract
The invention provides a kind of network redirection method and device. First access device receives the UE RRC connection request sent on the first frequency for access UTRAN; RRC connection request includes for indicating UE to support the identification code of E-UTRAN; First frequency carries and is sent in the RRC connection release message of UE at the second access device, first access device determines whether that UE accesses UTRAN, if it is judged that be no and refusal number of times without departing from preset times, the value of modified logo code, to indicate UE not support E-UTRAN, a RRC connection refused message is sent to UE, receive the UE RRC connection request retransmitted on the first frequency, re-execute and determine whether that UE accesses UTRAN and subsequent operation, until refusal number of times beyond preset times or is judged to allow UE to access in UTRAN. The present invention is modified the value of identification code, solves ping-pong when redirecting.
Description
Technical field
The present invention relates to communication technology, particularly relate to a kind of network redirection method and device.
Background technology
Based in the redirection of R8, subscriber equipment (UserEquipment, it is called for short UE) to universal terrestrial access network (UniversalTerrestrialRadioAccessNetwork, it is called for short UTRAN) send wireless heterogeneous networks (RadioResourceControl, it is called for short RRC) connection request, set up RRC with application with UTRAN network to be connected, to ensure being performed continuously over of business.
In practical application, blocking up or the reason such as access principle because the offered load of UTRAN be in, the access device in UTRAN is likely to occur refusal UE and accesses the situation of UTRAN. In the redirection of R8, RRC connection request carries and redirects cell " Pre-Redirectioninfo " in advance, the cell value of " Pre-Redirectioninfo " that carry in this RRC connection request is " True ", indicate UE and support evolved UTRAN(EvolvedUTRAN, be called for short E-UTRAN). Owing to UE supports E-UTRAN, access device, after refusal UE accesses UTRAN, can send instruction message to UE, and instruction UE is redirected back in E-UTRAN.
But, UE returns to after in E-UTRAN, can attempt being redirected to UTRAN, UTRAN because of same reason again and may again refuse the access of UE so that UE is redirected to again E-UTRAN. The redirection process carried out between UTRAN and E-UTRAN so repeatedly, is referred to as the ping-pong in redirection process, often causes the interruption of business, and brings bigger load to network, wastes Internet resources.
Summary of the invention
The present invention provides a kind of network redirection method and device, in order to solve to be redirected to the process of UTRAN from E-UTRAN the ping-pong existed, to reduce the waste of Internet resources and to alleviate network load.
For achieving the above object, the invention provides a kind of network redirection method, including:
First access device receives the radio resource control RRC connection request that user equipment (UE) sends on the first frequency for accessing general land wireless network UTRAN;Described RRC connection request includes for indicating described UE to support the identification code of evolved universal terrestrial wireless network E-UTRAN; Wherein, described first frequency carries and is sent in the RRC connection release message of described UE at the second access device;
Described first access device determines whether that described UE accesses described UTRAN;
If it is judged that when being no and refuse number of times without departing from preset times, described first access device revises the value of described identification code, to indicate described UE not support E-UTRAN;
Described first access device sends a RRC connection refused message to described UE;
Described first access device receives the described UE described RRC connection request resend on described first frequency;
Described first access device re-executes and determines whether that described UE accesses described UTRAN and subsequent operation, until described refusal number of times beyond described preset times or is judged to allow described UE to access in described UTRAN.
For achieving the above object, the invention provides a kind of network redirection device, including:
Receiver module, for repeating the radio resource control RRC connection request that reception user equipment (UE) sends on the first frequency for accessing general land wireless network UTRAN; Described RRC connection request includes for indicating described UE to support the identification code of evolved universal terrestrial wireless network E-UTRAN, until refusal number of times beyond preset times or is judged to allow described UE to access in described UTRAN; Wherein, described first frequency carries and is sent in the RRC connection release message of described UE at the second access device;
Judge module, for after described receiver module receives described RRC connection request message every time, it may be judged whether allow described UE to access described UTRAN;
Modified module, for described judge module judge to refuse every time described UE access in described UTRAN and described refusal number of times without departing from described preset times time, revise the value of described identification code, do not support E-UTRAN indicating described UE;
Sending module, for, after described modified module revises the value of described identification code, sending a RRC connection refused message to described UE, so that described UE resends described RRC connection request on described first frequency every time.
The invention provides a kind of network redirection method and device. first access device receives UE in the RRC connection request sent on first frequency of UTRAN, RRC connection request includes for indicating UE to support the identification code of E-UTRAN, wherein, first frequency carries and is sent in the RRC connection release message of UE at the second access device, first access device determines whether that UE accesses UTRAN, if it is judged that be no and refusal number of times without departing from preset times, the value of the first access device modified logo code, to indicate UE not support E-UTRAN, and send a RRC connection refused message to UE, first access device receives the UE RRC connection request resend on the first frequency, and re-execute and determine whether that UE accesses UTRAN and subsequent operation, until refusal number of times beyond preset times or is judged to allow UE to access in UTRAN. when present invention access device in utran judges not allow UE to access, the value of the identification code in RRC connection request is carried in amendment, UE does not support E-UTRAN to make access device judge, thus send the RRC connection refused message not carrying E-UTRAN frequency to UE, UE is made to refuse also cannot be redirected in E-UTRAN again when it accesses at UTRAN, again can only send, to access device, the RRC connection request accessing UTRAN on UTRAN frequency, thus solve in prior art be redirected to from E-UTAN in UTRAN process exist ping-pong, the waste of Internet resources can be reduced, and network load can be alleviated, be conducive to being performed continuously over of speech business and data service.
Accompanying drawing explanation
The schematic diagram of a kind of network redirection method that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the another kind of network redirection method that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of the another kind of network redirection method that Fig. 3 provides for the embodiment of the present invention;
The structural representation of a kind of network redirection device that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the another kind of network redirection device that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the another kind of network redirection device that Fig. 6 provides for the embodiment of the present invention.
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail.
Fig. 1 provides the schematic diagram of a kind of network redirection method for the embodiment of the present invention. The scene of embodiment of the present invention application is that UE is redirected in UTRAN from E-UTRAN. The executive agent of the method is the first access device for network insertion being arranged in UTRAN. As it is shown in figure 1, this network redirection method method comprises the following steps:
101, the first access device receives the radio resource control RRC connection request that user equipment (UE) sends on the first frequency for accessing general land wireless network UTRAN; Described RRC connection request includes for indicating described UE to support the identification code of evolved universal terrestrial wireless network E-UTRAN; Wherein, described first frequency carries and is sent in the RRC connection release message of described UE at the second access device.
When the signal of E-UTRAN is more weak, and the signal of UTRAN stronger time, or when the UE being currently accessed in E-UTRAN needs carry voice traffic, it is accomplished by UE and carries out circuit domain dropping (CircuitSwitchedFallBack, it is called for short CSFB), UE is fallen back in UTRAN to complete continuing of speech business, now evolved base station (EvolvedNodeB, it is called for short eNB) RRC connection release message can be issued to this UE, this RRC connection release message is carried the first frequency for accessing UTRAN. This first frequency is eNB is the UE frequency chosen. Wherein, eNB according to the measurement report reported, can obtain the frequency point information measured, and then therefrom selects a frequency as the first frequency; Alternatively, the frequency Selection Strategy that the operator that can prestore in eNB is arranged, choose a frequency as the first frequency according to this frequency Selection Strategy, wherein, different frequency Selection Strategies is corresponding to different redirection reasons. After receiving RRC connection release message, release is connected by UE with the RRC between eNB. Now, UE just can be redirected to UTRAN from E-UTRAN.
The first access device being in UTRAN receives the UE RRC connection request sent on the first frequency, sets up radio bearer with request with UTRAN. Wherein, RRC connection request includes for indicating UE to support the identification code of E-UTRAN. This identification code can be " Pre-redirectioninfo " cell in RRC connection request. In RRC connection request, the cell value of " Pre-redirectioninfo " cell always remains as " True ", and cell value is used to refer to for " True " and illustrates that UE can support E-UTRAN. In the present embodiment, the first access device can be the radio network controller (RadioNetworkController is called for short RNC) in UTRAN. Second access device can be the eNB in E-UTRAN.
102, described first access device determines whether that described UE accesses described UTRAN.
Specifically, after receiving RRC connection request, the first access device can judge according to the Network load status of UTRAN or access principle etc., to determine whether that UE accesses in UTRAN. Such as, when the offered load of UTRAN is in saturation, the first access device is then judged not allow UE to access UTRAN.
103 if it is judged that be no and refusal number of times is without departing from preset times, and described first access device revises the value of described identification code, to indicate described UE not support E-UTRAN.
In the present embodiment, when judging that refusal UE accesses in UTRAN, the first access device can the cumulative record refusal number of times corresponding with this RRC connection request. Specifically, it is possible in the first access device, arrange an enumerator, by the same UE of this counter records unaccepted number of times of same RRC connection request sent. In the present embodiment when the first access device first time judged that refusal UE was linked in UTRAN, enumerator will be activated, and now initial count value is 1. When the first access device judges that refusing UE because of same RRC connection request accesses UTRAN, enumerator is accomplished by adding 1 on current count value basis, obtains this RRC and connects unaccepted refusal number of times.
After judging that refusal UE accesses UTRAN, the first access device determines whether that whether the refusal number of times of counter records is beyond preset times. If refusal number of times is without departing from preset times, the value of the identification code in the first access device amendment RRC connection request. Specifically, the cell value of " Pre-redirectioninfo " cell can be set to " False " by the first access device. In reality, by the value of IE " SupportofE-UTRANFDD " and " SupportofE-UTRANTDD " in " Pre-redirectioninfo " cell for being disposed as " False ". This preset times can by network configuration, it is also possible to by management personnel according to the actual requirements with experience flexible configuration, general preset times can be 2～3 times.
104, described first access device sends a RRC connection refused message to described UE.
After the value having revised identification code, the first access device can send a RRC connection refused message to UE, to notify that UE the first access device does not allow it to access in UTRAN. In the present embodiment, in judging refusal UE access UTRAN and when refusing number of times without departing from preset times, the value of the identification code carried in RRC connection request is modified by the first access device, and amended identification code indicates UE and do not support E-UTRAN. Such first access device will connect at the RRC sent to UE to be refused not carry the frequency for accessing E-UTRAN in request, thus UE just after UTRAN network refuses its access, cannot be redirected in E-UTRAN at once.
105, described first access device receives the described UE described RRC connection request resend on described first frequency, and re-execute and determine whether that described UE accesses described UTRAN and subsequent operation, until described refusal number of times beyond described preset times or is judged to allow described UE to access in described UTRAN.
In the present embodiment, owing to the first RRC connection request not carried the frequency for accessing E-UTRAN, after receiving a RRC connection refusal request, UE can only continue to resend RRC connection request to the first access device on the first frequency, again set up radio bearer with UTRAN, in order to continuing of business.
First access device receives RRC connection request again, continue to re-execute and determine whether that UE accesses UTRAN, and when judging that refusal UE accesses UTRAN and refusal number of times without departing from preset times, the value of identification code in amendment RRC connection request, and send the first RRC connection request to UE, until refusal number of times is judged to allow UE to access in UTRAN beyond preset times or the first access device.
The network redirection method that the present embodiment provides, first access device receives UE in the RRC connection request sent on first frequency of UTRAN, RRC connection request includes for indicating UE to support the identification code of E-UTRAN, first frequency carries and is sent in the RRC connection release message of UE at the second access device, first access device determines whether that UE accesses UTRAN, if it is judged that be no and refusal number of times without departing from preset times, the value of the first access device modified logo code, to indicate UE not support E-UTRAN, and send a RRC connection refused message to UE, first access device receives the UE RRC connection request resend on the first frequency, and re-execute and determine whether that UE accesses UTRAN and subsequent operation, until refusal number of times beyond preset times or is judged to allow UE to access in UTRAN.
When in the present embodiment, access device in utran judges not allow UE to access, the value of the identification code in RRC connection request is carried in amendment, UE does not support E-UTRAN to make access device judge, thus send the RRC connection refused message not carrying E-UTRAN frequency to UE, UE is made to refuse also cannot be redirected in E-UTRAN again when it accesses at UTRAN, again can only send, to access device, the RRC connection request accessing UTRAN on UTRAN frequency, thus solving in prior art in the problem of ping-pong being redirected in UTRAN process to exist from E-UTAN, the waste of Internet resources can be reduced, and network load can be alleviated, be conducive to being performed continuously over of speech business and data service.
The another kind of network redirection method that Fig. 2 provides for the embodiment of the present invention is schematic diagram. As in figure 2 it is shown, the method comprises the following steps:
201, the first access device receives the UE RRC connection request sent on the first frequency for access UTRAN.
Referring to the record of related content in step 101 in above-described embodiment, can repeat no more herein.
202, the first access device determines whether that UE accesses UTRAN.
After receiving RRC connection request, the first access device can judge according to the Network load status of UTRAN or access principle etc., to determine whether that UE accesses in UTRAN. Such as, when the offered load of UTRAN is in saturation, the first access device is then judged not allow UE to access UTRAN. If it is judged that be no, perform step 203; If it is judged that be yes, perform step 301.
203, the first access device judges that whether refusal number of times is beyond preset times.
First access device is provided with enumerator, for the unaccepted refusal number of times of same RRC connection request. First access device is after judging that refusal UE accesses UTRAN, it is necessary to determine whether that whether refusal number of times is beyond preset times. If it is judged that be no, perform step 204; If it is judged that be yes, perform step 401.
204, the value of the first access device modified logo code, to indicate UE not support E-UTRAN.
The identification code carried in RRC connection request, the value of this identification code is able to indicate that UE supports E-UTRAN, in the present embodiment, when judging that refusal UE accesses in UTRAN and when refusing number of times without departing from preset times, the value of identification code is modified by the first access device so that the value of amended identification code indicates UE and do not support E-UTRAN.
205, the first access device sends a RRC connection refused message to UE.
Step 205 referring to the record of the related content of step 104 in above-described embodiment, can repeat no more herein.
In this example, owing to a RRC connection refused message not carried the frequency for accessing E-UTRAN, after receiving a RRC connection refused message, UE still can send RRC connection request to the first access device on the first frequency, and the first access device returns and performs step 201.
301, the first access device and UE set up radio bearer.
First access device step 202 judge allow UE access UTRAN time, the first access device will and UE between set up radio bearer, to carry out continuing of business.
401, the first access device keeps the value of identification code.
Judging that refusal number of times is beyond after preset times in step 203, the first access device keeps the value of identification code, the no longer value of modified logo code.
402, the first access device sends the 2nd RRC connection refused message to UE, 2nd RRC connection refused message carries the second frequency for accessing E-UTRAN, so that UE sends RRC connection request to the second access device on the second frequency, so that UE is redirected in E-UTRAN.
In step 401, due to the value of the first access device no longer modified logo code, thus can be determined that out that UE supports E-UTRAN. Now, the first access device will send the 2nd RRC connection refused message to UE, can carry the second frequency for accessing E-UTRAN in this RRC connection refused message. Further, namely UE is in the eNB in E-UTRAN to the second access device on the second frequency and sends RRC connection request, to be redirected in E-UTRAN by UE.
In the present embodiment, the first access device can also carry refusal instruction in the 2nd RRC connection refused message, and the instruction of this refusal refuses the UE refusal accessed instruction for indicating UTRAN. The instruction of this refusal can be transmitted to the eNB in E-UTRAN by UE by the second frequency. At UE after the second frequency is linked in E-UTRAN, if UE is because of identical redirection reason, it is necessary to when being redirected in UTRAN, owing to eNB learns that UTRAN refuses the UE access of this redirection reason, now this UE will not be redirected in UTRAN by eNB again. Preferably, it is possible to presetting certain time interval, UE can will not, because of identical redirection reason, be redirected in UTRAN by eNB in this interval, and wherein, this interval can have network side to be set according to the actual requirements.
When in the present embodiment, access device in utran judges not allow UE to access, the value of the identification code in RRC connection request is carried in amendment, UE does not support E-UTRAN to make access device judge, thus send the RRC connection refused message not carrying E-UTRAN frequency to UE, UE is made to refuse also cannot be redirected in E-UTRAN again when it accesses at UTRAN, again can only send, to access device, the RRC connection request accessing UTRAN on UTRAN frequency, thus solving in prior art in the problem of ping-pong being redirected in UTRAN process to exist from E-UTAN, the waste of Internet resources can be reduced, and network load can be alleviated, be conducive to being performed continuously over of speech business and data service.Further, UE at UE after the first frequency is repeatedly rejected to the first access device transmission RRC connection request, can also be redirected in E-UTRAN by the present embodiment again.
The schematic diagram of the another kind of network redirection method that Fig. 3 provides for the embodiment of the present invention. As it is shown on figure 3, the method comprises the following steps:
301, the first access device receives the UE RRC connection request sent on the first frequency, and RRC connection request also includes the type codes for indicating the UE reason being redirected in UTRAN.
Specifically, the first access device is in the UE RRC connection request sent on the first frequency for access UTRAN. Wherein, RRC connection request not only includes, for indicating UE to support the identification code of E-UTRAN, also including for indicating the UE type codes being redirected to the reason of UTRAN. About related content and the explanation of the first frequency, referring to the record of related content in above-described embodiment, can repeat no more herein.
302, the first access device is according to type codes, it is judged that UE is redirected to whether the reason in UTRAN is CSFB.
In the present embodiment, arranging different type codes for different redirection reasons in advance, wherein, the introduction of the reason of redirection can participate in the record of related content in above-described embodiment, repeats no more herein.
UE need from E-UTRAN be redirected to UTRAN time, can by redirect type codes corresponding to reason carry to first access device send RRC connection request in. After receiving RRC connection request, the first access device, according to the type codes carried in this RRC connection request, identifies the UE reason being redirected in UTRAN. Further, the first access device is it may determine that go out whether the reason redirected is CSFB. If it is judged that be CSFB for described reason, then perform step 401; If it is judged that be the non-CSFB of described reason, then perform step 501.
401, the first access device is according to admission control algorithm, and the priority of RRC connection request is set to highest level.
In the present embodiment, when the first access device judges that the UE reason being redirected in UTRAN is CSFB, in order to ensure that speech business carries out preferably, improve Consumer's Experience, the priority of this RRC connection request, according to the admission control algorithm preset, is set to highest level by the first access device.
402, the first access device determines whether that UE accesses UTRAN.
Specifically judge process referring to the record of related content in above-described embodiment, can repeat no more herein. If it is judged that be no, perform step 403; If it is judged that for being carried out step 601.
403, the first access device judges that whether refusal number of times is beyond preset times.
Concrete judge process referring to the record of related content in above-described embodiment, can repeat no more herein. When judging refusal number of times without departing from preset times, perform step 404.
404, the value of Pre-redirectioninfo cell is revised as False by the first access device.
To carry Pre-redirectioninfo cell in RRC connection request as identification code in the present embodiment, when judging that refusal UE accesses UTRAN, it is False that the first access device revises the value of this cell, does not support E-UTRAN indicating UE.
405, the first access device sends the 3rd RRC connection refused message to UE, and the 3rd RRC connection refused message is for indicating UE the 3rd frequency for accessing UTRAN reselected within the default time period.
In the present embodiment, when UE be redirected to the reason in UTRAN be CSFB time, for the speech business that continues as early as possible, after the cell value of the first access device amendment Pre-redirectioninfo cell is False, after the first access device first time refusal UE accesses UTRAN, just directly can issue the 3rd RRC connection refused message to UE, in the 3rd RRC connection refused message for indicating UE to reselect the 3rd frequency for accessing UTRAN within the default time period. Owing to have modified the value of Pre-redirectioninfo cell in the present embodiment, first access device decides that out that UE does not support E-UTRAN, without the second frequency carried for accessing in E-UTRAN in such 3rd RRC connection refused message, thus UE will not redirect in meeting E-UTRAN at once, overcome the ping-pong redirected back and forth.
Further, in the present embodiment by the highest for the priority-level of RRC connection request corresponding for CSFB, when because when the reason of CSFB causes UE to be redirected to UTRAN from E-UTRAN, in order to realize continuing of speech business as soon as possible, first access device can by search the 3rd frequency in the UE time period preset, continue to initiate circuit domain business such that it is able to save the time of circuit domain dropping.
406, the first access device receives the UE RRC connection request sent on the 3rd frequency.
501, the first access device determines whether that UE accesses UTRAN.
In step 302 if it is judged that when causing the non-CSFB of the UE reason being redirected in UTRAN, the first access device is according to the network state of UTRAN or access principle, it may be judged whether allow UE to access UTRAN. If it is judged that be no, perform step 502; If it is judged that be yes, perform step 601.
502, the first access device raises the rank of the priority of RRC connection request according to admission control algorithm.
General when redirecting the non-CSFB of reason, after RRC connection request is rejected, UE also can attempt again sending RRC connection request to the first access device. In order to ensure the experience of user, in the present embodiment, the first access device, after have rejected the same UE same RRC connection request sent each time, raises the rank of the priority of this RRC connection request according to default admission control algorithm.
503, the first access device judges that whether refusal number of times is beyond preset times.
Concrete judge process referring to the record of related content in above-described embodiment, can repeat no more herein. If it is determined that refusal number of times is without departing from preset times, perform step 504; If it is judged that refusal number of times is beyond preset times, perform step 506.
504, the value of Pre-redirectioninfo cell is revised as False by the first access device.
505, the first access device sends a RRC connection refused message to UE.
506, the first access device sends the 2nd RRC connection refused message to UE, 2nd RRC connection refused message carries the second frequency for accessing E-UTRAN, so that UE sends RRC connection request to the second access device on the second frequency, so that UE is redirected in E-UTRAN.
Judging that refusal number of times is beyond preset times in step 503, the first access device sends the 2nd RRC connection refused message to UE. Wherein, the 2nd RRC connection refused message carries the second frequency for accessing E-UTRAN. After UE receives the 2nd RRC connection refused message, sending RRC connection request to the second access device on the second frequency, UE is redirected in E-UTRAN by request.
In the present embodiment, the first access device can also carry refusal instruction in the 2nd RRC connection refused message, and the instruction of this refusal refuses the UE refusal accessed instruction for indicating UTRAN. The instruction of this refusal can be transmitted to the eNB in E-UTRAN by UE by the second frequency. At UE after the second frequency is linked in E-UTRAN, if UE is because of identical redirection reason, it is necessary to when being redirected in UTRAN, owing to eNB learns that UTRAN refuses the UE access of this redirection reason, now this UE will not be redirected in UTRAN by eNB again. Preferably, it is possible to presetting certain time interval, UE can will not, because of identical redirection reason, be redirected in UTRAN by eNB in this interval, and wherein, this interval can have network side to be set according to the actual requirements.
Owing to the first access device have modified the value of Pre-redirectioninfo cell, judge that UE does not support E-UTRAN, first access device will not carry the second frequency for accessing in E-UTRAN in the UE RRC connection refused message sent, thus UE will not be redirected back in E-UTRAN at once, overcome the ping-pong redirected back and forth. Such UE again will send RRC connection request to the first access device on the first frequency, and the first access device returns and performs step 301 and subsequent operation, until refusal number of times beyond preset times or is judged to allow UE to access in UTRAN.
601, the first access device accesses with UE and sets up radio bearer.
In step 402 or step 501, when the first access device judges to allow UE to access UTRAN, the first access device directly and UE set up radio bearer, in order to UE communicates in utran.
When in the present embodiment, access device in utran judges not allow UE to access, the value of the identification code in RRC connection request is carried in amendment, UE does not support E-UTRAN to make access device judge, thus send the RRC connection refused message not carrying E-UTRAN frequency to UE, UE is made to refuse also cannot be redirected in E-UTRAN again when it accesses at UTRAN, again can only send, to access device, the RRC connection request accessing UTRAN on UTRAN frequency, thus solving in prior art in the problem of ping-pong being redirected in UTRAN process to exist from E-UTAN, the waste of Internet resources can be reduced, and network load can be alleviated, be conducive to being performed continuously over of speech business and data service. further, UE at UE after the first frequency is repeatedly rejected to the first access device transmission RRC connection request, can also be redirected in E-UTRAN by the present embodiment again. and because when CSFB causes UE to be redirected to UTRAN, when the first access device first time refusal UE accesses UTRAN, first access device would indicate that UE is within the default time period, reselects the frequency for accessing UTRAN, is conducive to realizing continuing of speech business as soon as possible.
The structural representation of a kind of network redirection device that Fig. 4 provides for the embodiment of the present invention. As shown in Figure 4, this device includes: receiver module 41, judge module 42, modified module 43 and sending module 44.
When the signal of E-UTRAN is more weak, and the signal of UTRAN stronger time, or when the UE being currently accessed in E-UTRAN needs carry voice traffic, need UE to carry out CSFB to be fallen back to by UE in UTRAN to complete continuing of speech business, now eNB can issue RRC connection release message by this UE, carries the first frequency for accessing UTRAN in this RRC connection release message.This first frequency is eNB is the UE frequency chosen. Wherein, eNB chooses the method for the first frequency, referring to the record of related content in above-described embodiment, can repeat no more herein. After receiving RRC connection release message, release is connected by UE with the RRC between eNB. Now, UE just can be redirected to UTRAN from E-UTRAN.
The network redirection device that the present embodiment provides is the access device being in UTRAN, and wherein, this access device can be the RNC in UTRAN. Receiver module 41 in this network redirection device receives the UE RRC connection request sent on the first frequency, sets up radio bearer with request with UTRAN. Wherein, RRC connection request includes for indicating UE to support the identification code of E-UTRAN. This identification code can be " Pre-redirectioninfo " cell in RRC connection request. In RRC connection request, the cell value of " Pre-redirectioninfo " cell always remains as " True ", and cell value is used to refer to for " True " and illustrates that UE can support E-UTRAN. Wherein, network redirection device can be the RNC in UTRAN.
Receiver module 41 is connected with judge module 42, after receiving RRC connection request, it is judged that module 42 can judge according to the Network load status of UTRAN or access principle etc., to determine whether that UE accesses in UTRAN. Such as, when the offered load of UTRAN is in saturation, it is judged that module 42 is then judged not allow UE to access UTRAN.
In the present embodiment when judge module 42 judges that refusal UE accesses UTRAN, network redirection device can the cumulative record refusal number of times corresponding with this RRC connection request. Specifically, it is possible to center an enumerator 40 at this network redirection dress, the same UE unaccepted number of times of same RRC connection request sent is recorded by this enumerator 40. In the present embodiment when judge module 42 first time judges that refusal UE is linked in UTRAN, enumerator 40 will be activated, and now initial count value is 1. When judge module 42 judges that refusing UE because of same RRC connection request accesses UTRAN, enumerator 40 is accomplished by adding 1 on current count value basis, obtains this RRC and connects unaccepted refusal number of times.
After judging that refusal UE accesses UTRAN, it is judged that module 42 determines whether whether the refusal number of times that enumerator 40 records exceeds preset times. If refusal number of times is without departing from preset times, modified module 43 revises the value of the identification code in RRC connection request. Specifically, the cell value of " Pre-redirectioninfo " cell can be set to " False " by modified module 43. In reality, by the value of IE " SupportofE-UTRANFDD " and " SupportofE-UTRANTDD " in " Pre-redirectioninfo " cell for being disposed as " False ". This preset times can by network configuration, it is also possible to by management personnel according to the actual requirements with experience flexible configuration, general preset times can be 2～3 times. Modified module 43 is connected with sending module 44, and after being revised as the value of identification code, sending module 44 can send a RRC connection refused message to UE, to notify that UE network redirection device does not allow it to access in UTRAN. In the present embodiment, the value of the identification code carried in RRC connection request, judging that refusal UE accesses in UTRAN and when refusing number of times without departing from preset times, is modified so that amended identification code indicates UE and do not support E-UTRAN by modified module 43.Such sending module 44 connects in refusal request at the RRC sent to UE would not carry the frequency for accessing E-UTRAN, thus UE just after UTRAN network refuses its access, cannot be redirected in E-UTRAN at once.
In the present embodiment, owing to the first RRC connection request not carried the frequency for accessing E-UTRAN, after receiving a RRC connection refusal request, UE can only continue again to receive UE to the receiver module 41 in network redirection device on the first frequency and send RRC connection request, request and UTRAN set up radio bearer again, in order to continuing of business.
After receiver module 41 receives RRC connection request, judge module 42 will re-execute and determine whether that UE accesses UTRAN, and when judging that refusal UE accesses UTRAN and refusal number of times without departing from preset times every time, modified module 43 revises the value of identification code in RRC connection request, after each modified module 43 have modified the value of identification code, sending module 44 sends the first RRC connection request to UE, until refusal number of times is judged to allow UE to access in UTRAN beyond preset times or the first access device.
The network redirection device that the present embodiment provides, sending module receives UE in the RRC connection request sent on first frequency of UTRAN, RRC connection request includes for indicating UE to support the identification code of E-UTRAN, first frequency carries and is sent in the RRC connection release message of UE at the second access device, judge module determines whether that UE accesses UTRAN, if it is judged that be no and refusal number of times without departing from preset times, the value of modified module modified logo code, to indicate UE not support E-UTRAN, and send a RRC connection refused message to UE, receiver module receives the UE RRC connection request resend on the first frequency, and re-execute and determine whether that UE accesses UTRAN and subsequent operation, until refusal number of times beyond preset times or is judged to allow UE to access in UTRAN.
When in the present embodiment, access device in utran judges not allow UE to access, the value of the identification code in RRC connection request is carried in amendment, UE does not support E-UTRAN to make access device judge, thus send the RRC connection refused message not carrying E-UTRAN frequency to UE, UE is made to refuse also cannot be redirected in E-UTRAN again when it accesses at UTRAN, again can only send, to access device, the RRC connection request accessing UTRAN on UTRAN frequency, thus solving in prior art in the problem of ping-pong being redirected in UTRAN process to exist from E-UTAN, the waste of Internet resources can be reduced, and network load can be alleviated, be conducive to being performed continuously over of speech business and data service.
The structural representation of the another kind of network redirection device that Fig. 5 provides for the embodiment of the present invention. As it is shown in figure 5, this device includes: receiver module 51, judge module 52, modified module 53, maintenance module 54 and sending module 55.
Specifically, when UE needs to be redirected to UTRAN from E-UTRAN, eNB can send a RRC connection release message to UE, carries UE for accessing first frequency of UTRAN in this RRC connection release message. After receiving RRC connection release message, the wireless connections between UE and eNB will be released.
Receiver module 51 receives the UE RRC connection request sent on the first frequency, includes for indicating UE to support the identification code of E-UTRAN in this RRC connection request, and specifically, this identification code is " Pre-redirectioninfo " cell.
After receiving RRC connection request, it is judged that module 52 judges according to the Network load status of UTRAN or access principle etc., to determine whether that UE accesses in UTRAN. Such as, when the offered load of UTRAN is in saturation, then judge not allow UE to access UTRAN.
In the present embodiment, network redirection device also includes an enumerator 50, for recording the same UE unaccepted refusal number of times of same RRC connection request sent. Judge module 52 is after judging that refusal UE accesses UTRAN, it is necessary to determine whether that whether refusal number of times is beyond preset times. If it is judged that refusal number of times is without departing from preset times, the value of identification code in RRC connection request is carried in modified module 53 amendment, does not support E-UTRAN indicating UE.
Sending module 55 is connected with modified module 53, and after the value of identification code is modified, sending module 55 sends a RRC connection refused message to UE. In the present embodiment, E-UTRAN is not supported owing to the value of amended identification code indicates UE, in the UE RRC connection refused message sent, the frequency for accessing E-UTRAN is not carried at sending module 55, after receiving a RRC connection refused message, UE still can send RRC connection request to receiver module 51 on the first frequency.
And when judge module 52 judges that refusal number of times exceedes preset times, keep module 54 for keeping the value of identification code in RRC connection request, the value of modified module 53 no longer modified logo code. Module 54 is kept to be connected with sending module 55, in the present embodiment, when the value that maintenance module 54 keeps identification code is constant, sending module 55 sends the 2nd RRC connection refused message to UE, 2nd RRC connection refused message carries the second frequency for accessing E-UTRAN, namely UE is in the eNB in E-UTRAN to the second access device on the second frequency and sends RRC connection request, to be redirected in E-UTRAN by UE.
Wherein, can also carrying refusal instruction in the 2nd RRC connection refused message, the instruction of this refusal refuses the UE refusal accessed instruction for indicating UTRAN. The instruction of this refusal can be transmitted to eNB by the second frequency by UE. At UE after the second frequency is linked in E-UTRAN, if UE is because of identical redirection reason, it is necessary to when being redirected in UTRAN, owing to eNB learns that UTRAN refuses the UE access of this redirection reason, now this UE will not be redirected in UTRAN by eNB again. Preferably, it is possible to presetting certain time interval, UE can will not, because of identical redirection reason, be redirected in UTRAN by eNB in this interval, and wherein, this interval can have network side to be set according to the actual requirements.
When in the present embodiment, access device in utran judges not allow UE to access, the value of the identification code in RRC connection request is carried in amendment, UE does not support E-UTRAN to make access device judge, thus send the RRC connection refused message not carrying E-UTRAN frequency to UE, UE is made to refuse also cannot be redirected in E-UTRAN again when it accesses at UTRAN, again can only send, to access device, the RRC connection request accessing UTRAN on UTRAN frequency, thus solve in prior art be redirected to from E-UTAN in UTRAN process exist ping-pong, the waste of Internet resources can be reduced, and network load can be alleviated, be conducive to being performed continuously over of speech business and data service.
The structural representation of the another kind of network redirection device that Fig. 6 provides for the embodiment of the present invention. As shown in Figure 6, this device includes: enumerator 60, receiver module 61, judge module 62, modified module 63, keep module 64, call access control module 65, sending module 66 and reselect module 67.
Specifically, in the UE RRC connection request sent on the first frequency for access UTRAN. Wherein, RRC connection request not only includes, for indicating UE to support the identification code of E-UTRAN, also including for indicating the UE type codes being redirected to the reason of UTRAN. In the present embodiment, in advance different type codes is set for different redirection reasons. About the first frequency to redirect introduction and the explanation of reason, referring to the record of related content in above-described embodiment, can repeat no more herein.
UE need from E-UTRAN be redirected to UTRAN time, can carry redirecting type codes corresponding to reason in the RRC connection request sent to receiver module 61. After receiving RRC connection request, it is judged that module 62 according to the type codes carried in this RRC connection request, can identify the UE reason being redirected in UTRAN, it is judged that module 62 can determine whether out whether the reason of redirection is CSFB.
In the present embodiment, if it is determined that module 62 judges that redirecting reason is CSFB, in order to ensure that speech business carries out preferably, improves Consumer's Experience, the priority of RRC connection request is set to highest level by call access control module 65. Further, it is judged that module 62 continues to determine whether to allow UE to access UTRAN. If it is judged that refusal UE accesses in UTRAN, it is judged that module 62 determines whether that whether refusal number of times is beyond preset times. Wherein, enumerator 60 is for recording the same UE unaccepted number of times of same RRC connection request sent. Concrete judge process referring to the record of related content in above-described embodiment, can repeat no more herein.
And if it is determined that module 62 is judged to allow UE to access in UTRAN, between UE and UTRAN, set up radio bearer.
Judge module 62 is also connected with modified module 63, judge that refusal UE accesses UTRAN and refusal number of times without departing from preset times at judge module 62, the cell value of " Pre-redirectioninfo " is revised as " False " by modified module 63, does not support E-UTRAN indicating UE.
In the present embodiment, when UE be redirected to the reason in UTRAN be CSFB time, for the speech business that continues as early as possible, after the cell value of " Pre-redirectioninfo " is revised as " False ", after in first time, refusal UE accesses UTRAN, reselecting module 67 by being the RRC connection request of CSFB for redirecting reason, reselect the 3rd frequency for accessing UTRAN, then sending module 66 directly issues the 3rd RRC connection refused message to UE. Wherein, the 3rd RRC connection refused message is for indicating UE to reselect the 3rd frequency for accessing UTRAN within the default time period. UE will send on the 3rd frequency and send RRC connection request to receiver module 61.
Owing to have modified the cell value of " Pre-redirectioninfo " in the present embodiment, represent that UE does not support E-UTRAN, the 3rd RRC connection refused message that such sending module 66 sends does not carry the second frequency for accessing in E-UTRAN, thus UE will not be redirected back in E-UTRAN at once, overcome the ping-pong existed in redirection process.
Further, in the present embodiment by the highest for the priority-level of RRC connection request corresponding for CSFB, when because when the reason of CSFB causes UE to be redirected to UTRAN from E-UTRAN, in order to realize continuing of speech business as soon as possible, first access device reselects module 67 and can search for the 3rd frequency for UE, UE is made to continue to initiate circuit domain business within the default time period on the 3rd frequency such that it is able to save the time of circuit domain dropping.
If it is determined that module 62 judges that refusal number of times is beyond preset times, keeps module 64 then to keep the value of identification code in RRC connection request constant, module 64 is namely kept to keep the cell value of " Pre-redirectioninfo " to be revised as " True ".
General as the non-CSFB of redirection reason, after RRC connection request is rejected, UE is likely to also can attempt sending RRC connection request to receiver module 61. In order to ensure the experience of user, in the present embodiment, call access control module 65 after have rejected the same UE same RRC connection request sent each time, can raise the rank of the priority of this RRC connection request according to default admission control algorithm.
Further, it is judged that module 62 judges that whether refusal number of times is beyond preset times, and concrete judge process referring to the record of related content in above-described embodiment, can repeat no more herein. If it is determined that refusal number of times is without departing from preset times, the cell value of " Pre-redirectioninfo " is revised as " False " by modified module 63, then passes through sending module 66 and sends a RRC connection refused message to UE.
Owing to have modified the cell value of " Pre-redirectioninfo " in the present embodiment, judge that UE does not support E-UTRAN, the second frequency for accessing in E-UTRAN will not be carried in the UE RRC connection refused message sent, thus UE will not redirect in meeting E-UTRAN at once, overcome the ping-pong redirected back and forth. Such UE will again send RRC connection request on the first frequency, until refusal number of times beyond preset times or is judged to allow UE to access in UTRAN.
When in the present embodiment, access device in utran judges not allow UE to access, the value of the identification code in RRC connection request is carried in amendment, UE does not support E-UTRAN to make access device judge, thus send the RRC connection refused message not carrying E-UTRAN frequency to UE, UE is made to refuse also cannot be redirected in E-UTRAN again when it accesses at UTRAN, again can only send, to access device, the RRC connection request accessing UTRAN on UTRAN frequency, thus solve in prior art be redirected to from E-UTAN in UTRAN process exist ping-pong, the waste of Internet resources can be reduced, and network load can be alleviated, be conducive to being performed continuously over of speech business and data service.
Further, UE at UE after the first frequency is repeatedly rejected to the first access device transmission RRC connection request, can also be redirected in E-UTRAN by the present embodiment again. And because when CSFB causes UE to be redirected to UTRAN, when the first access device first time refusal UE accesses UTRAN, first access device would indicate that UE is within the default time period, reselects the frequency for accessing UTRAN, is conducive to realizing continuing of speech business as soon as possible.
Each functional module of the network redirection device that the present embodiment provides can be used for performing the flow process of the network redirection method shown in above-mentioned related embodiment, and its specific works principle repeats no more, and refers to the description of embodiment of the method.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit; Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a network redirection method, it is characterised in that including:
First access device receives the radio resource control RRC connection request that user equipment (UE) sends on the first frequency for accessing general land wireless network UTRAN;Described RRC connection request includes for indicating described UE to support the identification code of evolved universal terrestrial wireless network E-UTRAN; Wherein, described first frequency carries and is sent in the RRC connection release message of described UE at the second access device;
Described first access device determines whether that described UE accesses described UTRAN;
If it is judged that be no and refusal number of times is without departing from preset times, described first access device revises the value of described identification code, to indicate described UE not support E-UTRAN;
Described first access device sends a RRC connection refused message to described UE;
Described first access device receives the described UE described RRC connection request resend on described first frequency, and re-execute and determine whether that described UE accesses described UTRAN and subsequent operation, until described refusal number of times beyond described preset times or is judged to allow described UE to access in described UTRAN.
2. network redirection method according to claim 1, it is characterised in that also include:
When described refusal number of times is beyond described preset times, described first access device keeps the value of described identification code;
Described first access device sends the 2nd RRC connection refused message to described UE, described 2nd RRC connection refused message carries the second frequency for accessing E-UTRAN, so that described UE sends on described second frequency sends described RRC connection request to described second access device, so that described UE is redirected in described E-UTRAN.
3. network redirection method according to claim 2, it is characterised in that described RRC connection request also includes for indicating the described UE type codes being redirected to the reason of described UTRAN;
Described first access device determines whether that described UE accesses described UTRAN and includes:
According to described type codes, described first access device judges that described UE is redirected to whether the reason in described UTRAN is circuit domain dropping CSFB;
If described reason is described CSFB, the priority of described RRC connection request, according to admission control algorithm, is set to highest level by described first access device;
Described first access device determines whether that described UE accesses described UTRAN;
Described first access device also includes after revising the value of described identification code:
Described first access device sends the 3rd RRC connection refused message to described UE, and wherein, described 3rd RRC connection message is for indicating described UE to reselect the 3rd frequency for accessing described UTRAN within the default time period;
Described first access device receives the described UE described RRC connection request sent on described 3rd frequency.
4. network redirection method according to claim 3, it is characterised in that also include:
If the non-described CSFB of described reason, described first access device, after judging that refusing described UE accesses described UTRAN, also includes:
Described first access device raises the rank of the priority of described RRC connection request according to described admission control algorithm.
5. the network redirection method according to any one of claim 1-4, it is characterised in that described identification code is for redirecting cell " Pre-Redirectioninfo " in advance;
The value that described first access device revises described identification code includes:
The cell value of described " Pre-Redirectioninfo " is revised as " False " by described first access device.
6. a network redirection device, it is characterised in that including:
Receiver module, for repeating the radio resource control RRC connection request that reception user equipment (UE) sends on the first frequency for accessing general land wireless network UTRAN;Described RRC connection request includes for indicating described UE to support the identification code of evolved universal terrestrial wireless network E-UTRAN, until refusal number of times beyond preset times or is judged to allow described UE to access in described UTRAN; Wherein, described first frequency carries and is sent in the RRC connection release message of described UE at the second access device;
Judge module, for after described receiver module receives described RRC connection request message every time, it may be judged whether allow described UE to access described UTRAN;
Modified module, for described judge module judge to refuse every time described UE access in described UTRAN and described refusal number of times without departing from described preset times time, revise the value of described identification code, to indicate described UE not support E-UTRAN;
Sending module, for, after described modified module revises the value of described identification code, sending a RRC connection refused message to described UE, so that described UE resends described RRC connection request on described first frequency every time.
7. network redirection device according to claim 6, it is characterised in that also include:
Keep module, for when described refusal number of times is beyond described preset times, keeping the value of described identification code;
Described sending module, it is additionally operable to after keeping the value of described identification code, the 2nd RRC connection refused message is sent, so that described UE sends described RRC connection request to described second access device on the second frequency, to be redirected in described E-UTRAN by described UE to described UE; Wherein, described 2nd RRC connection refused message carries described second frequency for accessing E-UTRAN.
8. network redirection device according to claim 7, it is characterised in that described RRC connection request also includes the type codes for indicating the described UE reason being redirected in described UTRAN;
Call access control module, before determining whether that described UE accesses described UTRAN at described judge module, judge that described UE is redirected to whether the reason in described UTRAN is circuit domain dropping CSFB according to described type codes, if described reason is described CSFB, according to admission control algorithm, the priority of described RRC connection request is set to highest level;
Reselect module, for after the value of the described modified module described identification code of amendment, the 3rd RRC connection refused message is sent to described UE by described sending module, wherein, described 3rd RRC connection message is for indicating described UE to reselect the 3rd frequency for accessing described UTRAN within the default time period, and receives the described UE described RRC connection request sent on described 3rd frequency.
9. network redirection device according to claim 8, it is characterised in that also include:
Described call access control module, if being additionally operable to the non-described CSFB of described reason, after described judge module judges that refusing described UE accesses described UTRAN, raises the rank of the priority of described RRC connection request according to admission control algorithm.
10. the network redirection device according to any one of claim 6-9, it is characterised in that described identification code is for redirecting cell " Pre-Redirectioninfo " in advance;
Described modified module is specifically for when judging that refusing described UE accesses described UTRAN and described refusal number of times without departing from described preset times, being revised as " False " by the cell value of described " Pre-Redirectioninfo ".
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| GB2523335B (en) * | 2014-02-20 | 2018-02-14 | Ip Access Ltd | Network elements, wireless communication system and methods therefor |
| WO2016086409A1 (en) * | 2014-12-05 | 2016-06-09 | 华为技术有限公司 | Access method, apparatus and system |
| CN106034317B (en) * | 2015-03-13 | 2019-11-29 | 中国移动通信集团公司 | A kind of method and apparatus for finding and positioning CSFB calling procedure abnormal problem |
| US10085181B2 (en) * | 2015-07-29 | 2018-09-25 | Qualcomm Incorporated | Mechanism to avoid ping pong during inter radio access technology redirection failure |
| CN107197504A (en) * | 2017-06-28 | 2017-09-22 | 深圳天珑无线科技有限公司 | The method and device of frequency access |
| JP2021513231A (en) | 2017-12-18 | 2021-05-20 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Network redirection methods, terminals, access network devices and mobility management devices |
| CN110049578B (en) * | 2018-01-17 | 2021-08-03 | 华为技术有限公司 | Wireless connection modification method, device and system |
| CN108563943A (en) * | 2018-04-12 | 2018-09-21 | 佛山市百里洲科技有限公司 | It is a kind of can secure accessing mobile terminal computer |
| CN111918391B (en) * | 2020-09-08 | 2023-03-14 | 中国联合网络通信集团有限公司 | Paging processing method, evolved node B and mobile terminal |
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