CN101370269A - Cell selection method, user terminal and access network control node - Google Patents
Cell selection method, user terminal and access network control node Download PDFInfo
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- CN101370269A CN101370269A CNA2007101420024A CN200710142002A CN101370269A CN 101370269 A CN101370269 A CN 101370269A CN A2007101420024 A CNA2007101420024 A CN A2007101420024A CN 200710142002 A CN200710142002 A CN 200710142002A CN 101370269 A CN101370269 A CN 101370269A
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Abstract
This invention discloses a method of selecting cell, user terminal and access network control node. Utilizing this invention, when the user terminal selects cell, the user terminal AC and the access limiting information of the cell are considered so as to ensure that the cell accessed by the user terminal does not limit the user terminal AC and reduce the probability of overload of the finally selected target cell, so that the process that the target cell controls the load is reduced and the system resource is saved; at the same time, the business still can be initiated after the user terminal selects the cell because the user AC can not be limited by the cell accessed by the user terminal that is ensured. Therefore, the service quality is improved.
Description
Technical field
The present invention relates to communication field, relate in particular to method and user terminal and the access network control node of selecting the sub-district.
Background technology
In mobile communcations system, when the signal of the sub-district, place that user terminal receives is more and more weak,, user terminal must be switched to the stronger new sub-district of signal by original sub-district in moving process in order to guarantee the communication quality of user terminal.In the prior art, user terminal is measured abutting subdistrict, normally to abutting subdistrict list in the measurement control messages that user terminal received, sub-district in the tabulation is measured, and measurement report reported access network control node, as base station or radio network controller, described access network control node is according to measurement report, selection meets the Target cell of switching condition, initiates the switching of cell-of-origin to Target cell.
And in communication system, for the access procedure to the user limits, agreement introduced AC (AC of user terminal is that the user distributes when signatory for Access Class, notion AC), comprises AC0～9 of domestic consumer, perhaps the special user's 11～15 etc.; And the access network control node of sub-district is when the load of the sub-district of being administered surpasses certain threshold value, perhaps carrier policy, perhaps the S1 mouth breaks down, perhaps other reasons can be provided with the sub-district and insert restriction, comprises that sub-district part A C is set to the access style restriction, the sub-district perhaps is set forbids inserting Any user terminal (User Equipment, UE), the sub-district perhaps is set reserves, only allow some special defects professional as urgent call and operator's control business etc.And in the prior art, when user terminal switches to Target cell, if being inserted restricted information by described Target cell, the AC of this user terminal comprises, then because occurred the measure that traffic overload has taked AC to limit before, therefore Target cell causes that the probability of traffic overload is higher, if this UE has been cut into this Target cell and has caused traffic overload, for the control of the carrying out traffic overload control procedure of will loading, at this moment the method for taking commonly used is directly to cut off user's connection or force to switch some users in other sub-district, reduce the load of this Target cell, and this control procedure of loading needs consume system resources.
In addition, if described Target cell inserts the AC that restricted information comprises this user terminal, after the user is cut into this Target cell, when conversation end or abnormal conditions and state exchange after idle condition, before the timer expiry of this sub-district AC restriction, can not initiate business once more, this uses to the user and has brought inconvenience.
Summary of the invention
The embodiment of the invention provides method and user terminal and the access network control node of selecting the sub-district, can reduce the probability of traffic overload, saves system resource.
For solving the problems of the technologies described above, the purpose of the embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of method of selecting the sub-district, comprising:
The cell-of-origin access network control node obtains abutting subdistrict and inserts restricted information;
Described cell-of-origin access network control node uses the abutting subdistrict that is obtained to insert restricted information, the Target cell of selecting user terminal to insert.
The embodiment of the invention also provides a kind of method of selecting the sub-district, comprising:
The cell-of-origin access network control node obtains abutting subdistrict and inserts restricted information, and generates indication information according to described access restricted information, and described cell-of-origin access network control node is handed down to user terminal with this indication information;
Described user terminal uses the indication information that is received, and selects the sub-district.
The embodiment of the invention also provides a kind of method of selecting the sub-district, comprising:
The cell-of-origin access network control node obtains the information parameter of abutting subdistrict, obtains the Target cell that user terminal prepares to select incision according to described information parameter; Described cell-of-origin access network control node obtains the access style information of described user terminal, this information is sent to the Target cell of preparing to select incision;
Described preparation selects the Target cell of incision according to the user terminal access style information that receives, and judges that whether this sub-district limit described user's access style; If then the Target cell of incision is reselected at Access Network control point in cell-of-origin; If not, then start the sub-district changeover program, finish the switching of sub-district and select.
The embodiment of the invention also provides a kind of access network control node, comprising:
Data capture unit is used to obtain the access style information of user terminal and the access restricted information of abutting subdistrict;
Comparing unit is used for the access style of more described user terminal and the access restricted information of described abutting subdistrict, obtains the abutting subdistrict list that the access style to described user terminal does not limit;
Cell list issues the unit, and the abutting subdistrict list that is used for being obtained is handed down to described user terminal;
The information parameter acquiring unit is used for obtaining the information parameter of each sub-district of abutting subdistrict list, comprising the measurement report of each sub-district in the described abutting subdistrict list that receives described user terminal to send up;
The cell selecting unit is used for according to the cell measurement reporting that is received, and selects the incision Target cell.
The embodiment of the invention also provides a kind of user terminal, comprising:
The Data Receiving unit is used for the access restricted information of the abutting subdistrict that reception sources sub-district access network control node sends;
Comparing unit is used for the access style of this user terminal of comparison and the access restricted information of described abutting subdistrict, obtains the abutting subdistrict list that the access style to described user terminal does not limit;
Measuring unit is used for the sub-district of the abutting subdistrict list that obtained is measured, and measurement result is sent.
The embodiment of the invention also provides a kind of access network control node, comprising:
The Data Receiving unit is used to receive the access style information of user terminal and this user's that abutting subdistrict sends switching message;
Judging unit is used for inserting restricted information according to this sub-district, judges that whether this sub-district limit the access style of described user terminal, and will send judged result;
Feedback unit is used to receive the judged result of described judging unit, if limit the access style of described user terminal this sub-district, then should refuse described user and switch to this sub-district.
Above technical scheme as can be seen, because the embodiment of the invention is when user terminal selection cell, consider the AC of user terminal and the access restricted information of sub-district, does not limit the AC of this user terminal the sub-district that the assurance user terminal inserts, reduce the probability of the final Target cell traffic overload of selecting, thereby reduce the process of described Target cell load control, save system resource; Simultaneously, user's AC is not limited, so user terminal still can initiate business after having selected the sub-district, thereby promote service quality because guaranteed the sub-district that user terminal inserted.
Description of drawings
The method flow diagram of Fig. 1 for being provided in the embodiment of the invention one;
The structure chart of the access network control node that provided in the embodiment of the invention two is provided Fig. 2;
The method flow diagram of Fig. 3 for being provided in the embodiment of the invention three;
The structure chart of the user terminal that provided in the embodiment of the invention four is provided Fig. 4;
The access network control node structure chart of Fig. 5 for being provided in the embodiment of the invention four;
The method flow diagram of Fig. 6 for being provided in the embodiment of the invention five;
The method flow diagram of Fig. 7 for being provided in the embodiment of the invention six;
The access network control node structure chart of Fig. 8 for being provided in the embodiment of the invention seven;
The method flow diagram of Fig. 9 for being provided in the embodiment of the invention eight.
Embodiment
For making purpose of the present invention, advantage and technical scheme are clearer, below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
Embodiment one:
Referring to Fig. 1, the embodiment of the invention provides a kind of method of selecting the sub-district, and this method comprises:
Step 101: the cell-of-origin access network control node obtains the access restricted information of abutting subdistrict;
Wherein, described cell-of-origin access network control node can obtain the access restricted information of abutting subdistrict by the following method:
Method one: when the access restricted information of described abutting subdistrict changed, the access restricted information after the access network control node of described abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in to download and be sent to this abutting subdistrict access network control node on every side in the indication information (LoadIndication); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method two: the access network control node of described abutting subdistrict, every the time of presetting, report the access restricted information of this sub-district to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in and be sent to this abutting subdistrict access network control node on every side in the download message (Load info); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method three: the access network control node of cell-of-origin sends the inquiry request to the access network control node of described abutting subdistrict, and the access network control node of described abutting subdistrict feeds back to described cell-of-origin access network control node with the access restricted information of this sub-district;
Wherein, the access network control node of the peripherad abutting subdistrict in cell-of-origin sends the inquiry request, can be to send at random, also can be the time cycle property transmission of presetting;
Wherein, described access network control node can be Long Term Evolution (Long Term Evolution, LTE) base station (evolved NodeB in the system, eNB), also can be universal mobile telecommunications system (UniversalMobile Telecommunications System, radio network controller UMTS) (RadioNetwork Controller, RNC);
Wherein, above-mentioned three kinds of methods that provide are provided the access network control node of the described cell-of-origin access restricted information that obtains abutting subdistrict;
Step 102: when UE initiated to connect, described access network control node obtained the AC of described UE;
Wherein, described access network control node obtains the AC information of described UE, can be by the following method:
Method one: the AC information stores of described UE when described UE initiates the Radio Resource control connection, sends to this AC information the access network control node of described cell-of-origin in the subscriber identification card of this UE;
Wherein, described UE sends to the access network control node of described cell-of-origin with AC information, can pass through the Radio Resource control connection (Radio Resource Control-Connection, RRC) message sends to described cell-of-origin access network control node;
In the LTE system, also can, by UE with AC information be sent to mobile management entity (MobilityManagement Entity, MME), when the user initiated professional the connection, MME was sent to the cell-of-origin access network control node with the AC information of described UE;
Method two: UE is when initiating to connect, the AC information that is stored in the mobile management center is sent the cell-of-origin access network control node, wherein, the AC information at described storage and mobile management center is stored in user's subscribed services device as the part of CAMEL-Subscription-Information by described UE, when described UE the time obtains this AC information in registration, and with this AC information stores in the mobile management center;
Wherein, described mobile management center can be mobile management entity MME in the LTE system, and its concrete way can be:
The AC information of described UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, or other servers of core net; Tell described UE when UE carries out adhering to (attach) first time, the context part content stores of this described UE of AC information conduct of described UE is in MME; When described UE adhered to or initiates business, MME was by the message of S1 interface between MME and the eNB, and for example initial context is set up request message and sent to eNB;
Wherein, described mobile management center can be to move to serve (the Mobile Services Switching Center of switching center in the UMTS system, MCS) or position access register (Visiter LocationRegister, VLR) or data field processing unit (Serving GPRS Support Node, SGSN), its specific practice can be:
The AC information of described UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, and described server can be a Home Location Register, or on other servers of core net; Described UE obtains when adhering to for the first time or registering, and the AC information of described UE is sent to SGSN or MCS or VLR as the context part content of this described UE by above-mentioned server, and is stored among this SGSN or MCS or the VLR; When described UE adhered to or initiates service request, SGSN or MCS or VLR told radio network controller by descending direct-sending message or other message;
Step 103: the AC of the more described UE of access network control node of described cell-of-origin and the access restricted information of described abutting subdistrict, obtain the abutting subdistrict list that the AC to described UE does not limit;
Wherein, if abutting subdistrict has only one, can not consider to insert restricted information;
Step 104: the access network control node of described cell-of-origin is sent to UE with the cell list that the AC to described UE that is obtained does not limit;
Wherein, described abutting subdistrict list can be carried on to be measured in the control messages, is sent to described UE by described cell-of-origin access network control node; Also can pass through additive method;
Step 105: the cell-of-origin access network control node obtains the information parameter of sub-district in the cell list, wherein, comprises the measurement report of the abutting subdistrict in the described tabulation that receives the UE transmission;
Wherein, UE measures according to the measurement rule in the measurement control messages of receiving under connection status usually, if wherein include cell list in the measurement control messages that UE receives, then only the sub-district in the cell list of receiving is measured, under connection status, measurement report is reported access network control node;
Wherein, described measurement report, and other handoff parameters such as cell load, historical information etc., are the needed informations parameter in select target sub-district;
Wherein, above-mentioned steps 101,102 orders do not limit.
Among this embodiment, be equally applicable to UE and be in situation under the idle state, can guarantee UE cell selecting to a sub-district of its AC not being limited under the idle state.In the above-mentioned steps 104, utilize system broadcast message that abutting subdistrict list is sent to UE, measure according to the measurement rule of system broadcast message, ue selects resident sub-district.Do not need above-mentioned steps 106.
This method reduces the abutting subdistrict that UE measures, and can make UE energy-conservation.
Implement two:
Referring to Fig. 2, the embodiment of the invention also provides a kind of access network control node, comprising:
Data capture unit 201 is used to obtain the AC information of UE and the access restricted information of abutting subdistrict;
Wherein, described access network control node can be eNB in the LTE system, also can be the RNC among the UMTS;
Comparing unit 202 is used for the AC of more described UE and the access restricted information of described abutting subdistrict, obtains the abutting subdistrict list that the AC to described UE does not limit;
Cell list issues unit 203, and the abutting subdistrict list that is used for being obtained is handed down to described UE;
Wherein, described abutting subdistrict list can be carried on to be measured in the control messages, is sent to described UE; Also can pass through additive method;
Information parameter acquiring unit 204 is used for obtaining the information parameter of the sub-district of abutting subdistrict list, wherein, comprises the measurement report that obtains the abutting subdistrict in the described tabulation that UE sends;
Wherein, described information parameter, in the present embodiment, when switched UE request sub-district, this information parameter was a handoff parameter;
Wherein, UE measures according to the measurement rule in the measurement control messages of receiving under connection status usually, if wherein include cell list in the measurement control messages that UE receives, then only the sub-district in the cell list of receiving is measured, and measurement report is reported access network control node;
Cell selecting unit 205 is used for according to the information parameter that is obtained, and selects the incision Target cell.
Under idle condition, measure according to the measurement rule of system broadcast message, do not need to report network.
Embodiment three:
Referring to Fig. 3, the embodiment of the invention also provides a kind of method of selecting the sub-district, and different with preceding method is, the abutting subdistrict that in this method the AC of UE is not limited obtains at UE, and its idiographic flow comprises:
Step 301: the access network control node of cell-of-origin obtains the access restricted information of abutting subdistrict;
Wherein, described cell-of-origin access network control node can obtain the access restricted information of abutting subdistrict by the following method:
Method one: when the access restricted information of described abutting subdistrict changed, the access restricted information after the access network control node of described abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in to download and be sent to this abutting subdistrict access network control node on every side in the indication information (LoadIndication); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method two: the access network control node of described abutting subdistrict, every the time of presetting, report the access restricted information of this sub-district to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in and be sent to this abutting subdistrict access network control node on every side in the download message (Load info); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method three: the access network control node of cell-of-origin sends the inquiry request to the access network control node of described abutting subdistrict, and the access network control node of described abutting subdistrict feeds back to described cell-of-origin access network control node with the access restricted information of this sub-district;
Wherein, the access network control node of the peripherad abutting subdistrict in cell-of-origin sends the inquiry request, can be to send at random, also can be the time cycle property transmission of presetting;
Wherein, described access network control node can be eNB in the LTE system, also can be the RNC among the UMTS;
Wherein, above-mentioned three kinds of methods that provide are provided the access network control node of the described cell-of-origin access restricted information that obtains abutting subdistrict;
Step 302: when UE initiate to connect, described cell-of-origin access network control node was sent to UE with the access restricted information of the abutting subdistrict that received;
Wherein, the access restricted information of described abutting subdistrict can be carried on to be measured in the control messages, is sent to described UE by described cell-of-origin access network control node; Also can pass through additive method;
Step 303: described UE compares the AC of this UE and the access restricted information of described abutting subdistrict, and the sub-district that those access restricted informations do not comprise the AC of described UE is measured;
Wherein, if candidate cell has only one.Can not consider AC information;
Step 304: described UE reports described cell-of-origin access network control node with measurement report;
Step 305: such as cell load, historical information etc. are carried out switch decision to the cell-of-origin access network control node, select Target cell according to this measurement report and other handoff parameters;
Wherein, described measurement report, and other handoff parameters such as cell load, historical information etc., are the needed informations parameter in select target sub-district.
In the said method, the method that UE selects to insert the sub-district can also be: when UE initiated to connect, described cell-of-origin access network control node issued an isosystem measurement indication according to described access restricted information to UE; UE is according to the different system of this indication measurement, and measurement result is sent to the cell-of-origin access network control node, the cell-of-origin access network control node according to this measurement report and other handoff parameters such as cell load, historical informations etc. are carried out switch decision, select Target cell.
Embodiment four:
Referring to Fig. 4, the embodiment of the invention provides a kind of UE, comprising:
Wherein, the access restricted information of described abutting subdistrict can be carried on to be measured in the control messages, is sent to described UE by described cell-of-origin access network control node; Also can pass through additive method;
Comparing unit 402 is used for the AC of this UE of comparison and the access restricted information of described abutting subdistrict, obtains the abutting subdistrict list that the AC to described UE does not limit;
Wherein, if candidate cell has only one, can not consider AC information;
Measuring unit 403 is used for the sub-district of the abutting subdistrict list that obtained is measured, and measurement result is sent.
Referring to Fig. 5, the embodiment of the invention also provides a kind of access network control node, comprising:
Insert restricted information acquiring unit 501, be used to obtain the access restricted information of abutting subdistrict on every side;
Insert restricted information and issue unit 502, be used to send the access restricted information of abutting subdistrict on every side that is obtained;
Information parameter acquiring unit 503 is used for obtaining the cell information parameter of described cell list, wherein, comprises the measurement report that receives sub-district in the described cell list;
Wherein, in the present embodiment, described information parameter is the handoff parameter of described sub-district;
Wherein, described information parameter comprises cell measurement reporting, cell load, historical information etc.
Embodiment five:
Referring to Fig. 6, the embodiment of the invention also provides a kind of method of selecting the sub-district, is that with the preceding method difference in this method, UE is in idle condition, obtains the method difference of the access restricted information of abutting subdistrict on every side, and its idiographic flow comprises:
Step 601: the access network control node of cell-of-origin obtains the access restricted information of abutting subdistrict on every side;
Wherein, described cell-of-origin access network control node can obtain the access restricted information of abutting subdistrict by the following method:
Method one: when the access restricted information of described abutting subdistrict changed, the access restricted information after the access network control node of described abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in to download and be sent to this abutting subdistrict access network control node on every side in the indication information (LoadIndication); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method two: the access network control node of described abutting subdistrict, every the time of presetting, report the access restricted information of this sub-district to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in and be sent to this abutting subdistrict access network control node on every side in the download message (Load info); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method three: the access network control node of cell-of-origin sends the inquiry request to the access network control node of described abutting subdistrict, and the access network control node of described abutting subdistrict feeds back to described cell-of-origin access network control node with the access restricted information of this sub-district;
Wherein, the access network control node of the peripherad abutting subdistrict in cell-of-origin sends the inquiry request, can be to send at random, also can be the time cycle property transmission of presetting;
Wherein, described access network control node can be eNB in the LTE system, also can be the RNC among the UMTS;
Wherein, above-mentioned three kinds of methods that provide are provided the access network control node of the described cell-of-origin access restricted information that obtains abutting subdistrict;
Step 602: when UE was in idle condition, the access restricted information of abutting subdistrict on every side that the access network control node of described cell-of-origin will obtain was handed down to UE;
Wherein, the access restricted information of abutting subdistrict was handed down to UE around described access network control node can be incited somebody to action by system broadcast message; Also can described access restricted information be handed down to UE by other method;
Step 603: described UE compares the AC of this UE and the access restricted information of described abutting subdistrict, and the sub-district that those access restricted informations do not comprise the AC of described UE is measured;
Step 604: described UE selects resident sub-district according to measurement result;
Wherein, described measurement result is for selecting the needed information parameter of persistent district;
In the said method, UE selects the method for persistent district, can also be: after the cell-of-origin access network control node obtains abutting subdistrict access restricted information, according to described access restricted information, issue an isosystem measurement indication to UE, UE indicates according to this, measures described different system, and, select different system to insert according to measurement result.
Embodiment six:
Referring to Fig. 7, the embodiment of the invention also provides a kind of method of selecting the sub-district, be with the preceding method difference, this method does not need to obtain the access restricted information of abutting subdistrict, and after preparing to be cut into Target cell, judged whether to allow incision by the access restricted information of described Target cell according to oneself, the idiographic flow of this method comprises:
Step 701: when UE initiated to connect, described cell-of-origin access network control node obtained the AC information of described UE;
Wherein, described access network control node obtains the AC information of described UE, can be by the following method:
Method one: the AC information stores of described UE when described UE initiates to connect, sends to this AC information the access network control node of described cell-of-origin in the subscriber identification card of this UE;
Wherein, described UE sends to the access network control node of described cell-of-origin with AC information, can pass through the Radio Resource control connection (Radio Resource Control-Connection, RRC) message sends to described cell-of-origin access network control node;
In the LTE system, also can, by UE with AC information be sent to mobile management entity (MobilityManagement Entity, MME), when the user initiated professional the connection, MME sent to the cell-of-origin access network control node with the AC information of described UE;
Method two: UE is when initiating to connect, the AC information that is stored in the mobile management center is sent described cell-of-origin access network control node, wherein, the AC information at described storage and mobile management center is stored in user's subscribed services device as the part of CAMEL-Subscription-Information by described UE, when described UE the time obtains this AC information in registration, and with this AC information stores in the mobile management center;
Wherein, described mobile management center can be mobile management entity MME in the LTE system, and its concrete way can be:
The AC information of described UE is stored in the server as the part of CAMEL-Subscription-Information, and described server can be the user attaching server, or other servers of core net; Tell described UE when UE carries out adhering to (attach) first time, the context part content stores of this described UE of AC information conduct of described UE is in MME; When described UE adhered to or initiates business, MME was by the message of S1 interface between MME and the eNB, and for example the initial context request of setting up sends to eNB;
Wherein, described mobile management center can be to move to serve (the Mobile Services Switching Center of switching center in the UMTS system, MCS), or position access register (VisiterLocation Register, VLR) or data field processing unit (Serving GPRS Support Node, SGSN), its specific practice can be:
The AC information of described UE is stored in the server as the part of CAMEL-Subscription-Information, and described server can be a Home Location Register, or on other servers of core net; Described UE obtains when adhering to for the first time or registering, and the context part content stores of this described UE of AC information conduct of described UE is in SGSN or MCS or VLR; When described UE adhered to or initiates service request, SGSN or MCS or VLR told radio network controller by descending direct-sending message or other message;
Step 702: the cell-of-origin access network control node obtains the measurement report of UE, and according to this measurement report and other handoff parameters such as cell load, historical informations etc. are carried out switch decision, judge the sub-district of inserting;
Wherein, described measurement report, and other handoff parameters such as cell load, historical information etc., are the needed informations parameter in select target sub-district;
Step 703: the access network control node of described cell-of-origin sends the AC information of switching message and described UE to the Target cell access network control node of preparing incision;
Wherein, the AC information of described UE can be carried to switch and be sent to the Target cell of judging the preparation incision that obtains in the message;
Wherein, if in UMTS, stride the switching of IUR mouth, can set up in request (radiolink setup request) message or wireless connections reconstruction preparation (radio link reconfiguration prepare) message in wireless connections and bring Target RNC, if the switching of reorientation can bring Target RNC in reorientation (relocation require) message;
Step 704: the Target cell of message is switched in described reception, and whether the access restricted information of judging this sub-district comprises the AC of described UE, if then execution in step 706; If not, execution in step 705 then;
Step 705: start the sub-district changeover program, finish the switching of sub-district and select;
Step 706: the sub-district that message is switched in described reception does not allow described UE to cut this sub-district;
Wherein, the access network control node of described sub-district can be cut this sub-district to refuse described UE by to cell-of-origin access network control node feedback switch failure information; Also can send to the access network control node of cell-of-origin by other message;
Wherein, in UMTS, if Target RNC does not allow to cut this sub-district, set up failure (RADIO LINK SETUP FAILURE) or wireless connections reconstruction failure (RADIO LINK RECONFIGURATION FAILURE) message for the wireless connections of source RNC feedback, perhaps feed back reorientation and prepare failure (relocation preparationfailure) message;
Step 707: the sub-district of incision is reselected according to the information parameter that is obtained in described cell-of-origin, execution in step 703;
Wherein, in the said method, when the sub-district of selected incision does not allow the UE incision, can also comprise:
The Target cell that message is switched in described reception with this sub-district to the confined feedback information of the AC of described UE to described cell-of-origin access network control node;
Wherein, this sub-district restricted information can be carried in the switch failure information, feed back to described cell-of-origin access network control node; Usually, this information can be carried in the cause value that switches message failure, cause value can be that forbid the sub-district, or the sub-district reservation, or some AC restriction of sub-district.
Embodiment seven:
Referring to Fig. 8, the embodiment of the invention also provides a kind of access network control node, comprising:
Data Receiving unit 801 is used to receive the AC information of UE and this user's that abutting subdistrict sends switching message;
Wherein, when UE initiates to connect, the AC of this UE is sent to the access network control node of affiliated subdistrict, in abutting subdistrict, judge the Target cell that obtains the desire access when the access network control node of affiliated subdistrict, the AC information of described UE is sent this abutting subdistrict, and send switching message to this abutting subdistrict;
Judging unit 802 is used for inserting restricted information according to this sub-district, judges that whether this sub-district limit the AC of described UE, and will send judged result;
Feedback unit 803 is used to receive the judged result of described judging unit, if limit the AC of described UE this sub-district, then should refuse described user and switch to this sub-district.
Embodiment eight:
Referring to Fig. 9, the embodiment of the invention also provides a kind of method of selecting the sub-district, and different with the method for the selection sub-district that provides among the embodiment six is, judges that by the cell-of-origin end whether sub-district that desire selects limit the AC of UE, and its idiographic flow is:
Step 901: the cell-of-origin access network control node obtains the access restricted information of abutting subdistrict;
Wherein, described cell-of-origin access network control node can obtain the access restricted information of abutting subdistrict by the following method:
Method one: when the access restricted information of described abutting subdistrict changed, the access restricted information after the access network control node of described abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in to download and be sent to this abutting subdistrict access network control node on every side in the indication information (LoadIndication); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method two: the access network control node of described abutting subdistrict, every the time of presetting, report the access restricted information of this sub-district to described cell-of-origin access network control node;
Wherein, the access restricted information of described abutting subdistrict can be included in and be sent to this abutting subdistrict access network control node on every side in the download message (Load info); Also the access restricted information of described abutting subdistrict can be carried at other with the interactive information of on every side access network control node in abutting subdistrict around being sent to;
Method three: the access network control node of cell-of-origin sends the inquiry request to the access network control node of described abutting subdistrict, and the access network control node of described abutting subdistrict feeds back to described cell-of-origin access network control node with the access restricted information of this sub-district;
Wherein, the access network control node of the peripherad abutting subdistrict in cell-of-origin sends the inquiry request, can be to send at random, also can be the time cycle property transmission of presetting;
Wherein, described access network control node can be eNB in the LTE system, also can be the RNC among the UMTS;
Wherein, above-mentioned three kinds of methods that provide are provided the access network control node of the described cell-of-origin access restricted information that obtains abutting subdistrict;
Step 902: when UE initiated to connect, described access network control node obtained the AC of described UE;
Wherein, described access network control node obtains the AC information of described UE, can be by the following method:
Method one: the AC information stores of described UE when described UE initiates to connect, sends to this AC information the access network control node of described cell-of-origin in the subscriber identification card of this UE;
Wherein, described UE sends to the access network control node of described cell-of-origin with AC information, can pass through the Radio Resource control connection (Radio Resource Control-Connection, RRC) message sends to described cell-of-origin access network control node;
In the LTE system, also can, by UE with AC information be sent to mobile management entity (MobilityManagement Entity, MME), when the user initiated professional the connection, MME sent to the cell-of-origin access network control node with the AC information of described UE;
Method two: UE is when initiating to connect, the AC information that is stored in the mobile management center is sent described cell-of-origin access network control node, wherein, the AC information at described storage and mobile management center is stored in user's subscribed services device as the part of CAMEL-Subscription-Information by described UE, when described UE the time obtains this AC information in registration, and with this AC information stores in the mobile management center;
Wherein, described mobile management center can be mobile management entity MME in the LTE system, and its concrete way can be:
The AC information of described UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, or other servers of core net; Tell described UE when UE carries out adhering to (attach) first time, the context part content stores of this described UE of AC information conduct of described UE is in MME; When described UE adhered to or initiates business, MME was by the message of S1 interface between MME and the eNB, and for example initial context is set up and asked to send to eNB;
Wherein, described mobile management center can be to move to serve (the Mobile Services Switching Center of switching center in the UMTS system, MCS) or position access register (Visiter LocationRegister, VLR) or data field processing unit (Serving GPRS Support Node, SGSN), its specific practice can be:
The AC information of described UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, and described server can be a Home Location Register, or on other servers of core net; Described UE obtains when adhering to for the first time or registering, and the AC information of described UE is sent to SGSN or MCS or VLR as the context part content of this described UE by above-mentioned server, and is stored among this SGSN or MCS or the VLR; When described UE adhered to or initiates service request, SGSN or MCS or VLR told radio network controller by descending direct-sending message or other message;
Wherein, the execution sequence of step 901 and step 902 does not limit;
Step 903: the access network control node of cell-of-origin obtains the information parameter of abutting subdistrict on every side;
Step 904: the access network control node of cell-of-origin is according to the information parameter that is obtained, and the access restricted information of the abutting subdistrict that obtains and the AC of described UE, selects the Target cell of incision.
The cell-of-origin access network control node can not utilize the restricted information of abutting subdistrict that the abutting subdistrict list that ue measures is controlled; User terminal is measured according to the abutting subdistrict list of measuring in the control messages, if do not comprise cell list in the measurement control messages that receives, then physical layer is measured co-frequency cell on every side according to some algorithm; The ue reporting measurement reports is given the cell-of-origin access network control node;
Wherein, when switch UE request sub-district, described information parameter in the present embodiment, this information parameter is a handoff parameter;
Wherein, handoff parameter comprises cell measurement reporting, and cell load, historical information etc.;
Wherein, if candidate cell has only one, can not consider AC information.
The AC application is an optional parameters when switching or cell selecting in the embodiment of the invention.
Among all embodiment that the invention described above provided, described access restricted information, comprise: AC limits (CellAccess Restriction) information, and perhaps (Cell barred) information is forbidden in the sub-district, or (Cell Reservedfor operator use) information is reserved in the sub-district; Wherein, when the sub-district was provided with the sub-district and forbids, then any UE was forbidden inserting in this sub-district, when the sub-district is provided with the sub-district obligate information, then only allowed a UE who inserts to initiate certain specific business, for example, the sub-district is set only allows UE to carry out urgent call etc.;
Wherein, described access restricted information can also comprise: insert the restricted information time span and cause inserting the reason etc. of restriction;
Wherein, when the sub-district was set to the sub-district and reserves, UE can not persistent district, can only initiate emergence call service and specific UE initiates professional.For example AC is that 11,15 user can initiate the control business of operator.
Wherein, described sub-district prohibition information can comprise that the sub-district forbids cause value, for example, when in the LTE system, eNB is because certain reason, broken down such as the S1/IU mouth, load is overweight, and operator is provided with, or other reasons, and will forbid the sub-district is whole, at this moment just can notify the abutting subdistrict base station with the sub-district prohibition information;
For example, in the LTE system, when source eNB receives sub-district prohibition information in abutting connection with the eNB sub-district, mouth breaks down if cause value is S1, the restricted information of this sub-district is primary reference parameter when switching so, and it can not switch to this candidate target cells, switches to other candidate target cells; If not this cause value, this parameter can be last or less important or irrespective parameter so;
In above-mentioned all embodiment of the present invention, the formation of the access restricted information of sub-district can be expanded, setting shows that inserting restricted information is the field that belongs to which sub-district, as adding " cell identity " field, so that the access network control node of cell-of-origin when receiving the access restricted information of abutting subdistrict, can be judged is the access restricted information of concrete which sub-district; Also can increase whether forbidden field of sub-district; Can also increase the field whether the expression sub-district only allows UE to carry out urgent call, the concrete structure of the restricted information of sub-district can be as shown in table 1:
Table 1:
| Access Class Barred list | The number of cells of an enb maximum | |||
| Access Class Barred | ||||
| -cell id | ||||
| -ACB INFO | 16bits | Enumerated (not barred, barred) two kinds of options: the non-i that forbids, forbid. | The 0th bit representation AC0, the 1st bit representation AC1.。。By that analogy.0: do not forbid 1: forbid |
| >Extent ACB | 16bits (or other positions) | The same | The 0th bit representation expansion AC0... by that analogy | |
| Cell barring | Enumerated (not barred, barred) two kinds of options: the non-i that forbids, forbid | Whether forbid the sub-district | ||
| >cause | Option | The reason that may forbid | ||
| Cel lreserve | Only allow urgent call | |||
| Timer | The time restriction of sub-district restriction |
Wherein, the form of the composition of sub-district restricted information is not limited to table.
One of ordinary skill in the art will appreciate that all or part of step that realizes method described in the embodiment, can instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, this program is when carrying out, included step is identical with method step among embodiment one and the embodiment three respectively, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
Above technical scheme as can be seen, because when the embodiment of the invention is selected the sub-district at UE, consider the AC of UE and the access restricted information of sub-district, does not limit the AC of this UE the sub-district that assurance UE inserts, reduce the probability of the final Target cell traffic overload of selecting, thereby reduce the process of described Target cell load control, save system resource; Simultaneously, user's AC is not limited, so UE still can initiate business after having selected the sub-district, thereby promote service quality because guaranteed the sub-district that UE inserted.
More than the method for the selection sub-district that the embodiment of the invention provided and user terminal and access network control node are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (23)
1. a method of selecting the sub-district is characterized in that, comprising:
The cell-of-origin access network control node obtains abutting subdistrict and inserts restricted information;
Described cell-of-origin access network control node uses the abutting subdistrict that is obtained to insert restricted information, the Target cell of selecting user terminal to insert.
2. the method for selection according to claim 1 sub-district is characterized in that, described cell-of-origin access network control node uses the abutting subdistrict that is obtained to insert restricted information, and the select target sub-district comprises:
Described cell-of-origin access network control node is according to the access restricted information of described abutting subdistrict, obtain the abutting subdistrict that the user terminal access style is not limited, and in this abutting subdistrict that user terminal access style is not limited, the Target cell of selecting described user terminal to insert.
3. the method for selection according to claim 2 sub-district is characterized in that, the described abutting subdistrict that the user terminal access style is not limited that obtains comprises:
Described cell-of-origin access network control node obtains the access style information of described user terminal;
The abutting subdistrict that the access network control node comparison of described cell-of-origin is obtained inserts the access style information of restricted information and described user terminal, obtains the abutting subdistrict that described user terminal access style is not limited.
4. the method for selection according to claim 1 sub-district is characterized in that, described cell-of-origin access network control node uses the abutting subdistrict that is obtained to insert restricted information, and the select target sub-district comprises:
Described cell-of-origin access network control node obtains the access style information of described user terminal and the information parameter of abutting subdistrict on every side;
Described cell-of-origin access network control node is according to described user terminal access style information and the access restricted information and the information parameter of abutting subdistrict on every side, the Target cell of selecting described user terminal to insert.
5. the method for selection according to claim 1 sub-district is characterized in that, described cell-of-origin access network control node uses the abutting subdistrict that is obtained to insert restricted information, and the select target sub-district comprises:
Described cell-of-origin access network control node inserts restricted information with the abutting subdistrict that obtains and is handed down to user terminal;
Access style of described this user terminal of user terminal comparison and the described abutting subdistrict that is received insert restricted information, obtain the abutting subdistrict that described user terminal access style is not limited;
Described cell-of-origin access network control node is according to the information parameter of the described abutting subdistrict that the user terminal access style is not limited, the Target cell of selecting described user terminal to insert.
6. according to the method for claim 3 or 4 described selection sub-districts, it is characterized in that described cell-of-origin access network control node obtains the access style information of described user terminal, comprising:
When described user terminal initiates to connect, described user terminal will be preset in the access network control node that access style information in the subscriber identification card sends to described cell-of-origin;
Perhaps, user terminal is when initiating to connect, the access style information that is stored in the mobile management center is sent described access network control node, wherein, the described access style information that is stored in the mobile management center is stored in user's subscribed services device by the part of described user terminal as CAMEL-Subscription-Information, when described user terminal the time obtains this access style information in registration, and with this access style information stores in the mobile management center.
7. according to the method for the arbitrary described selection of claim 1 to 5 sub-district, it is characterized in that described cell-of-origin access network control node obtains abutting subdistrict and inserts restricted information, comprising:
When the access restricted information of abutting subdistrict changed, the access restricted information after the access network control node of described abutting subdistrict initiatively will change was sent to the cell-of-origin access network control node;
Perhaps, the access network control node of abutting subdistrict every the time of presetting, is reported the access restricted information of this sub-district to described cell-of-origin access network control node;
Perhaps, the access network control node of cell-of-origin, every the time of presetting, obtain the request that this abutting subdistrict inserts restricted information to the access network control node transmission of abutting subdistrict, described abutting subdistrict feeds back to the access restricted information of this sub-district the access network control node of described cell-of-origin.
8. according to the method for the arbitrary described selection of claim 1 to 5 sub-district, it is characterized in that described access restricted information comprises: the access style restricted information, perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information.
9. according to the method for the arbitrary described selection of claim 1 to 5 sub-district, it is characterized in that described access restricted information also comprises: insert binding hours length information, and the cause information that causes inserting restriction.
10. a method of selecting the sub-district is characterized in that, comprising:
The cell-of-origin access network control node obtains abutting subdistrict and inserts restricted information, and generates indication information according to described access restricted information, and described cell-of-origin access network control node is handed down to user terminal with this indication information;
Described user terminal uses the indication information that is received, and selects the sub-district.
11. the method for selection according to claim 10 sub-district is characterized in that:
Described indication information comprises the access restricted information of the abutting subdistrict that is obtained;
Described user terminal uses the indication information that is received, and selects the sub-district, comprising:
Described user terminal uses the described abutting subdistrict that is received to insert restricted information, selects the resident sub-district of described user terminal.
12. the method for selection according to claim 11 sub-district is characterized in that, described user uses the described abutting subdistrict that is received to insert restricted information, selects the resident sub-district of described user terminal, comprising:
Access style of described this user terminal of user terminal comparison and the described abutting subdistrict that is received insert restricted information, obtain the abutting subdistrict that described user terminal access style is not limited;
Described user terminal is selected the resident sub-district of described user terminal in the abutting subdistrict that this user terminal access style is not limited that is obtained.
13. the method for selection according to claim 10 sub-district is characterized in that:
Described indication information comprises the isosystem measurement indication;
Described user terminal uses the indication information that is received, and selects the sub-district, comprising:
Described user terminal is measured different system according to described indication, selects the different system that inserts according to measurement result.
14. the method according to the arbitrary described selection of claim 10 to 13 sub-district is characterized in that, described cell-of-origin access network control node is handed down to user terminal with described indication information, comprising:
The access network control node of described cell-of-origin is handed down to user terminal with the indication information of the abutting subdistrict that obtains by broadcast.
15. the method according to the arbitrary described selection of claim 10 to 13 sub-district is characterized in that, described cell-of-origin access network control node obtains abutting subdistrict and inserts restricted information, comprising:
When the access restricted information of abutting subdistrict changed, the access restricted information after the access network control node of described abutting subdistrict initiatively will change was sent to the cell-of-origin access network control node;
Perhaps, the access network control node of abutting subdistrict every the time of presetting, is reported the access restricted information of this sub-district to described cell-of-origin access network control node;
Perhaps, the access network control node of cell-of-origin, every the time of presetting, obtain the request that this abutting subdistrict inserts restricted information to the access network control node transmission of abutting subdistrict, described abutting subdistrict feeds back to the access restricted information of this sub-district the access network control node of described cell-of-origin.
16. the method according to the arbitrary described selection of claim 10 to 13 sub-district is characterized in that, described access restricted information comprises: the access style restricted information, perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information.
17. the method for selection according to claim 16 sub-district is characterized in that, described access restricted information also comprises: insert binding hours length information, and the cause information that causes inserting restriction.
18. a method of selecting the sub-district is characterized in that, comprising:
The cell-of-origin access network control node obtains the information parameter of abutting subdistrict, obtains the Target cell that user terminal prepares to select incision according to described information parameter; Described cell-of-origin access network control node obtains the access style information of described user terminal, this information is sent to the Target cell of preparing to select incision;
Described preparation selects the Target cell of incision according to the user terminal access style information that receives, and judges that whether this sub-district limit described user's access style; If then the Target cell of incision is reselected at Access Network control point in cell-of-origin; If not, then start the sub-district changeover program, finish the switching of sub-district and select.
19. the method for selection according to claim 18 sub-district is characterized in that, this method also comprises:
The Target cell of described preparation incision judges that obtaining this sub-district limits described user's access style, then to cell-of-origin access network control node feedback switch failure information, it is former because insert the cause value of restriction to carry handoff failure in this switch failure information.
20. the method according to claim 18 or 19 described selection sub-districts is characterized in that, described abutting subdistrict inserts restricted information and comprises: the access style restricted information, perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information.
21. an access network control node is characterized in that, comprising:
Data capture unit is used to obtain the access style information of user terminal and the access restricted information of abutting subdistrict;
Comparing unit is used for the access style of more described user terminal and the access restricted information of described abutting subdistrict, obtains the abutting subdistrict list that the access style to described user terminal does not limit;
Cell list issues the unit, and the abutting subdistrict list that is used for being obtained is handed down to described user terminal;
The information parameter acquiring unit is used for obtaining the information parameter of each sub-district of abutting subdistrict list, comprising the measurement report of each sub-district in the described abutting subdistrict list that receives described user terminal to send up;
The cell selecting unit is used for according to the cell measurement reporting that is received, and selects the incision Target cell.
22. a user terminal is characterized in that, comprising:
The Data Receiving unit is used for the access restricted information of the abutting subdistrict that reception sources sub-district access network control node sends;
Comparing unit is used for the access style of this user terminal of comparison and the access restricted information of described abutting subdistrict, obtains the abutting subdistrict list that the access style to described user terminal does not limit;
Measuring unit is used for the sub-district of the abutting subdistrict list that obtained is measured, and measurement result is sent.
23. an access network control node is characterized in that, comprising:
The Data Receiving unit is used to receive the access style information of user terminal and this user's that abutting subdistrict sends switching message;
Judging unit is used for inserting restricted information according to this sub-district, judges that whether this sub-district limit the access style of described user terminal, and will send judged result;
Feedback unit is used to receive the judged result of described judging unit, if limit the access style of described user terminal this sub-district, then should refuse described user and switch to this sub-district.
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