CN101370269B - 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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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,, must user terminal 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 message that user terminal received; Sub-district in the tabulation is measured; And measurement report reported access network control node, like 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, and 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 like 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 said Target cell, the AC of this user terminal comprises; Then because before the measure that traffic overload has been taked the AC restriction has appearred, so 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 said 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 realizes through following technical scheme:
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;
Said cell-of-origin access network control node is according to the access restricted information of said 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 said user terminal to insert, said access restricted information comprises: the access style restricted information; Perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information.
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 according to said access restricted information generation indication information, said cell-of-origin access network control node is handed down to user terminal with this indication information, and said indication information comprises the access restricted information of the abutting subdistrict that is obtained; Said access restricted information; Comprise: the access style restricted information, perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information;
Said user terminal uses the said abutting subdistrict that is received to insert restricted information, selects the resident selection sub-district of said user terminal.
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; Said cell-of-origin access network control node obtains the access style information of said user terminal, this information is sent to the Target cell of preparing to select incision;
Said preparation selects the Target cell of incision to insert the user terminal access style information of restricted information and reception according to receiving oneself; Judge that whether this sub-district limit said user's access style; Said access restricted information comprises: the access style restricted information; Perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information; 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, accomplish 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 said user terminal and the access restricted information of said abutting subdistrict, obtains the abutting subdistrict list that the access style to said user terminal does not limit;
Cell list issues the unit, is used for the abutting subdistrict list that is obtained is handed down to said 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 said abutting subdistrict list that receives said 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 said 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 said user terminal, and will send judged result;
Feedback unit is used to receive the judged result of said judging unit, if limit the access style of said user terminal this sub-district, then refuses said user and switches to this sub-district.
Above technical scheme can be found out; 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, and reduces the probability of the final Target cell traffic overload of selecting; Thereby reduce the process of said 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;
Fig. 2 is the structure chart of the access network control node that provided in the embodiment of the invention two;
The method flow diagram of Fig. 3 for being provided in the embodiment of the invention three;
Fig. 4 is the structure chart of the user terminal that provided in the embodiment of the invention four;
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 the object of the 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 through following method:
Method one: when the access restricted information of said abutting subdistrict changed, the access restricted information after the access network control node of said abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of said 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 (Load Indication); Also can the access restricted information of described abutting subdistrict 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 at a distance from the time of presetting, the access restricted information to this sub-district of said cell-of-origin access network control node report;
Wherein, the access restricted information of said 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 can the access restricted information of described abutting subdistrict 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 said abutting subdistrict, and the access network control node of said 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) (evolved NodeB eNB), also can be UMTS (Universal Mobile Telecommunications System in the base station in the system; Radio network controller UMTS) (Radio Network Controller, RNC);
Wherein, the access network control node of the said cell-of-origin access restricted information that obtains abutting subdistrict is not limited to above-mentioned three kinds of methods that provide;
Step 102: when UE initiated to connect, said access network control node obtained the AC of said UE;
Wherein, said access network control node obtains the AC information of said UE, can be through following method:
Method one: the AC information stores of said UE when said UE initiates the Radio Resource control connection, sends to this AC information the access network control node of said cell-of-origin in the subscriber identification card of this UE;
Wherein, said UE sends to the access network control node of said 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 (Mobility Management 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 said 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 said storage and mobile management center is stored in user's subscribed services device as the part of CAMEL-Subscription-Information by described UE, when said 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 said UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, or other servers of core net; When UE carries out adhering to (attach) first time, tell said UE, the context part content stores of this said UE of AC information conduct of said UE is in MME; When said UE adhered to or initiates business, MME was through 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 Location Register; VLR) or the data field processing unit (Serving GPRS Support Node, SGSN), its specific practice can be:
The AC information of said UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, and said server can be a Home Location Register, or on other servers of core net; Said UE obtains when adhering to for the first time or registering, and the AC information of said UE is sent to SGSN or MCS or VLR as the context part content of this said UE by above-mentioned server, and is stored among this SGSN or MCS or the VLR; When said UE adhered to or initiates service request, SGSN or MCS or VLR told radio network controller through descending direct-sending message or other message;
Step 103: the AC of the more said UE of access network control node of said cell-of-origin and the access restricted information of said abutting subdistrict, obtain the abutting subdistrict list that the AC to said 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 said cell-of-origin is sent to UE with the cell list that the AC to said UE that is obtained does not limit;
Wherein, described abutting subdistrict list can be carried in the measurement control message, is sent to said 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 said tabulation that receives the UE transmission;
Wherein, UE measures according to the measurement rule in the measurement control message of receiving under connection status usually; If include cell list in the measurement control message that wherein 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 the 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:
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 said UE and the access restricted information of said abutting subdistrict, obtains the abutting subdistrict list that the AC to said UE does not limit;
Cell list issues unit 203, is used for the abutting subdistrict list that is obtained is handed down to said UE;
Wherein, described abutting subdistrict list can be carried in the measurement control message, is sent to said 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 said 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 message of receiving under connection status usually; If include cell list in the measurement control message that wherein UE receives; Then only the sub-district in the cell list of receiving is measured, and measurement report is reported access network control node;
Under idle condition, measure according to the measurement rule of system broadcast message, need not 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 through following method:
Method one: when the access restricted information of said abutting subdistrict changed, the access restricted information after the access network control node of said abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of said 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 (Load Indication); Also can the access restricted information of described abutting subdistrict 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 at a distance from the time of presetting, the access restricted information to this sub-district of said cell-of-origin access network control node report;
Wherein, the access restricted information of said 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 can the access restricted information of described abutting subdistrict 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 said abutting subdistrict, and the access network control node of said 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, the access network control node of the said cell-of-origin access restricted information that obtains abutting subdistrict is not limited to above-mentioned three kinds of methods that provide;
Step 302: when UE initiated to connect, described cell-of-origin access network control node was sent to UE with the access restricted information of the abutting subdistrict that is received;
Wherein, the access restricted information of described abutting subdistrict can be carried in the measurement control message, is sent to said UE by described cell-of-origin access network control node; Also can pass through additive method;
Step 303: said 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 said UE is measured;
Wherein, if candidate cell has only one.Can not consider AC information;
Step 304: said 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, said 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 in the measurement control message, is sent to said 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 said 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 said cell list, wherein, comprises the measurement report that receives sub-district in the said cell list;
Wherein, in the present embodiment, said 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 through following method:
Method one: when the access restricted information of said abutting subdistrict changed, the access restricted information after the access network control node of said abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of said 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 (Load Indication); Also can the access restricted information of described abutting subdistrict 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 at a distance from the time of presetting, the access restricted information to this sub-district of said cell-of-origin access network control node report;
Wherein, the access restricted information of said 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 can the access restricted information of described abutting subdistrict 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 said abutting subdistrict, and the access network control node of said 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, the access network control node of the said cell-of-origin access restricted information that obtains abutting subdistrict is not limited to above-mentioned three kinds of methods that provide;
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 said 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 through system broadcast message; Also can described access restricted information be handed down to UE through other method;
Step 603: said 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 said UE is measured;
Step 604: said 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 that with the preceding method difference this method need not obtained 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 said Target cell according to oneself, the idiographic flow of this method comprises:
Step 701: when UE initiated to connect, said cell-of-origin access network control node obtained the AC information of said UE;
Wherein, said access network control node obtains the AC information of said UE, can be through following method:
Method one: the AC information stores of said UE when said UE initiates to connect, sends to this AC information the access network control node of said cell-of-origin in the subscriber identification card of this UE;
Wherein, said UE sends to the access network control node of said 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 (Mobility Management 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 said UE;
Method two: UE is when initiating to connect; The AC information that is stored in the mobile management center is sent said cell-of-origin access network control node; Wherein, The AC information at said storage and mobile management center is stored in user's subscribed services device as the part of CAMEL-Subscription-Information by described UE, when said 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 said UE is stored in the server as the part of CAMEL-Subscription-Information, and said server can be the user attaching server, or other servers of core net; When UE carries out adhering to (attach) first time, tell said UE, the context part content stores of this said UE of AC information conduct of said UE is in MME; When said UE adhered to or initiates business, MME was through 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 the position access register (Visiter Location Register, VLR) or data field processing unit (Serving GPRS Support Node; SGSN), its specific practice can be:
The AC information of said UE is stored in the server as the part of CAMEL-Subscription-Information, and said server can be a Home Location Register, or on other servers of core net; Said UE obtains when adhering to for the first time or registering, and the context part content stores of this said UE of AC information conduct of said UE is in SGSN or MCS or VLR; When said UE adhered to or initiates service request, SGSN or MCS or VLR told radio network controller through 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 said cell-of-origin sends the AC information of switching message and said 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 (radio link 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 said reception, and whether the access restricted information of judging this sub-district comprises the AC of said UE, if then execution in step 706; If then execution in step 705 not;
Step 705: start the sub-district changeover program, accomplish the switching of sub-district and select;
Step 706: the sub-district that message is switched in said reception does not allow this sub-district of said UE incision;
Wherein, the access network control node of said sub-district can be cut this sub-district to refuse said UE through 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 through 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 preparation failure) message;
Step 707: the sub-district of incision is reselected according to the information parameter that is obtained in said cell-of-origin, execution in step 703;
Wherein, in the said method, when the sub-district that is selected incision does not allow the UE incision, can also comprise:
The Target cell that message is switched in said reception with this sub-district to the confined feedback information of the AC of said UE to described cell-of-origin access network control node;
Wherein, can this sub-district restricted information be carried in the switch failure information, feed back to described cell-of-origin access network control node; Usually, can this information 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:
Wherein, When UE initiates to connect; The AC of this UE is sent to the access network control node of affiliated subdistrict; When the access network control node of affiliated subdistrict is judged the Target cell that obtains the desire access in abutting 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 said UE, and will send judged result;
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 through following method:
Method one: when the access restricted information of said abutting subdistrict changed, the access restricted information after the access network control node of said abutting subdistrict initiatively will change was sent to described cell-of-origin access network control node;
Wherein, the access restricted information of said 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 (Load Indication); Also can the access restricted information of described abutting subdistrict 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 at a distance from the time of presetting, the access restricted information to this sub-district of said cell-of-origin access network control node report;
Wherein, the access restricted information of said 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 can the access restricted information of described abutting subdistrict 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 said abutting subdistrict, and the access network control node of said 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, the access network control node of the said cell-of-origin access restricted information that obtains abutting subdistrict is not limited to above-mentioned three kinds of methods that provide;
Step 902: when UE initiated to connect, said access network control node obtained the AC of said UE;
Wherein, said access network control node obtains the AC information of said UE, can be through following method:
Method one: the AC information stores of said UE when said UE initiates to connect, sends to this AC information the access network control node of said cell-of-origin in the subscriber identification card of this UE;
Wherein, said UE sends to the access network control node of said 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 (Mobility Management 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 said UE;
Method two: UE is when initiating to connect; The AC information that is stored in the mobile management center is sent said cell-of-origin access network control node; Wherein, The AC information at said storage and mobile management center is stored in user's subscribed services device as the part of CAMEL-Subscription-Information by described UE, when said 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 said UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, or other servers of core net; When UE carries out adhering to (attach) first time, tell said UE, the context part content stores of this said UE of AC information conduct of said UE is in MME; When said UE adhered to or initiates business, MME was through 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 Location Register; VLR) or the data field processing unit (Serving GPRS Support Node, SGSN), its specific practice can be:
The AC information of said UE is stored in user's subscribed services device as the part of CAMEL-Subscription-Information, and said server can be a Home Location Register, or on other servers of core net; Said UE obtains when adhering to for the first time or registering, and the AC information of said UE is sent to SGSN or MCS or VLR as the context part content of this said UE by above-mentioned server, and is stored among this SGSN or MCS or the VLR; When said UE adhered to or initiates service request, SGSN or MCS or VLR told radio network controller through 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 said 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 in the measurement control message, if do not comprise cell list in the measurement control message 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 (Cell Access Restriction) information, and perhaps (Cell barred) information is forbidden in the sub-district, or (Cell Reserved for operator use) information is reserved in the sub-district; Wherein, when forbade the cell setting sub-district, then any UE was forbidden inserting in this sub-district, when the obligate information of cell setting sub-district, then only allowed the UE that 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 cell setting is sub-district when reserving, UE can not persistent district, can only initiate emergence call service and specific UE initiates professional.For example to be that 11,15 user can initiate the control of operator professional for AC.
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 has 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 use prohibition information notice abutting subdistrict base station, sub-district;
For example, in the LTE system, when source eNB receives the 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; Can the formation of the access restricted information of sub-district be expanded; Setting shows that inserting restricted information is the field that belongs to which sub-district; As adding " cell identity " field, be the access restricted information of concrete which sub-district so that the access network control node of cell-of-origin when receiving the access restricted information of abutting subdistrict, can be judged; 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:
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 accomplish through program, described program can be stored in the computer-readable recording medium; This program is when carrying out; Included step respectively with embodiment one and embodiment three in method step identical, described storage medium is like ROM/RAM; Magnetic disc, CD etc.
Above technical scheme can be found out; 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, and reduces the probability of the final Target cell traffic overload of selecting; Thereby reduce the process of said 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 have been carried out detailed introduction; Used concrete example among this paper 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 on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (18)
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;
Said cell-of-origin access network control node is according to the access restricted information of said 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 said user terminal to insert, said access restricted information comprises: the access style restricted information; Perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information.
2. the method for selection according to claim 1 sub-district is characterized in that, the said abutting subdistrict that the user terminal access style is not limited that obtains comprises:
Said cell-of-origin access network control node obtains the access style information of said user terminal;
The abutting subdistrict that the access network control node comparison of said cell-of-origin is obtained inserts the access style information of restricted information and said user terminal, obtains the abutting subdistrict that said user terminal access style is not limited.
3. the method for selection according to claim 1 sub-district is characterized in that, said 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:
Said cell-of-origin access network control node obtains the access style information of said user terminal and the information parameter of abutting subdistrict on every side;
Said 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 said user terminal to insert.
4. the method for selection according to claim 1 sub-district is characterized in that, said 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:
Said cell-of-origin access network control node inserts restricted information with the abutting subdistrict that obtains and is handed down to user terminal;
The access style of said this user terminal of user terminal comparison inserts restricted information with the said abutting subdistrict that is received, and obtains the abutting subdistrict that said user terminal access style is not limited;
Said cell-of-origin access network control node is according to the information parameter of the said abutting subdistrict that the user terminal access style is not limited, the Target cell of selecting said user terminal to insert.
5. according to the method for claim 2 or 3 described selection sub-districts, it is characterized in that said cell-of-origin access network control node obtains the access style information of said user terminal, comprising:
When said user terminal initiates to connect, said user terminal will be preset in the access network control node that access style information in the subscriber identification card sends to said 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 said access network control node, and wherein, the said 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 said user terminal the time obtains this access style information in registration, and with this access style information stores in the mobile management center.
6. according to the method for the arbitrary described selection of claim 1 to 4 sub-district, it is characterized in that said 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 said 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 at a distance from the time of presetting, the access restricted information to this sub-district of said cell-of-origin access network control node report;
Perhaps; The access network control node of cell-of-origin; Every at a distance from the time of presetting, obtain the request that this abutting subdistrict inserts restricted information to the access network control node transmission of abutting subdistrict, said abutting subdistrict feeds back to the access restricted information of this sub-district the access network control node of said cell-of-origin.
7. according to the method for the arbitrary described selection of claim 1 to 4 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.
8. 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 according to said access restricted information generation indication information, said cell-of-origin access network control node is handed down to user terminal with this indication information, and said indication information comprises the access restricted information of the abutting subdistrict that is obtained; Said access restricted information; Comprise: the access style restricted information, perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information;
Said user terminal uses the said abutting subdistrict that is received to insert restricted information, selects the resident sub-district of said user terminal.
9. the method for selection according to claim 8 sub-district is characterized in that, said user uses the said abutting subdistrict that is received to insert restricted information, selects the resident sub-district of said user terminal, comprising:
The access style of said this user terminal of user terminal comparison inserts restricted information with the said abutting subdistrict that is received, and obtains the abutting subdistrict that said user terminal access style is not limited;
Said user terminal is selected the resident sub-district of said user terminal in the abutting subdistrict that this user terminal access style is not limited that is obtained.
10. the method for selection according to claim 8 sub-district is characterized in that:
Described indication information comprises the isosystem measurement indication;
Said user terminal uses the indication information that is received, and selects the sub-district, comprising:
Said user terminal is measured different system according to described indication, selects the different system that inserts according to measurement result.
11. to the method for 10 arbitrary described selection sub-districts, it is characterized in that according to Claim 8 said cell-of-origin access network control node is handed down to user terminal with said indication information, comprising:
The access network control node of said cell-of-origin is handed down to user terminal with the indication information of the abutting subdistrict that obtains through broadcast.
12. to the method for 10 arbitrary said selection sub-districts, it is characterized in that according to Claim 8 said 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 said 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 at a distance from the time of presetting, the access restricted information to this sub-district of said cell-of-origin access network control node report;
Perhaps; The access network control node of cell-of-origin; Every at a distance from the time of presetting, obtain the request that this abutting subdistrict inserts restricted information to the access network control node transmission of abutting subdistrict, said abutting subdistrict feeds back to the access restricted information of this sub-district the access network control node of said cell-of-origin.
13. the method for selection according to claim 12 sub-district is characterized in that, said access restricted information also comprises: insert binding hours length information, and the cause information that causes inserting restriction.
14. 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; Said cell-of-origin access network control node obtains the access style information of said user terminal, this information is sent to the Target cell of preparing to select incision;
Said preparation selects the Target cell of incision to insert the user terminal access style information of restricted information and reception according to oneself; Judge that whether this sub-district limit said user's access style; Said access restricted information comprises: the access style restricted information; Perhaps access information is forbidden in the sub-district, perhaps the sub-district obligate information; 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, accomplish the switching of sub-district and select.
15. the method for selection according to claim 14 sub-district is characterized in that, this method also comprises:
The Target cell of said preparation incision judges that obtaining this sub-district limits said 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 in this switch failure information, to carry handoff failure.
16. 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 said user terminal and the access restricted information of said abutting subdistrict, obtains the abutting subdistrict list that the access style to said user terminal does not limit;
Cell list issues the unit, is used for the abutting subdistrict list that is obtained is handed down to said 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 said abutting subdistrict list that receives said 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.
17. 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 said 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.
18. 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 said user terminal, and will send judged result;
Feedback unit is used to receive the judged result of said judging unit, if limit the access style of said user terminal this sub-district, then refuses said user and switches to this sub-district.
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