CN101227723A - Method for implementing subscriber terminal access control - Google Patents
Method for implementing subscriber terminal access control Download PDFInfo
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- CN101227723A CN101227723A CNA2008100043162A CN200810004316A CN101227723A CN 101227723 A CN101227723 A CN 101227723A CN A2008100043162 A CNA2008100043162 A CN A2008100043162A CN 200810004316 A CN200810004316 A CN 200810004316A CN 101227723 A CN101227723 A CN 101227723A
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Abstract
The invention discloses a method for achieving user terminal access control, which comprises the following steps: confirming overloading mark of the current access channel according to an access channel overloading circumstance which is estimated by a base station in a certain periodic time and presetting access channel loading and overloading threshold, judging whether the comparison of the current access channel overloading mark and the original access channel overloading mark is the same, if is the same, keeping the original access channel overloading mark to be unchanged, and ending the flow, if not, adjusting access channel time slot length according the access channel overloading mark. The method of the invention improves access reliability under the circumstance that the access channel is not overloading, when in overloading, reducing access conflict probability among user terminals, thereby improving access success rate of user terminal. And access time slot length is improved under the circumstance that the access channel is loading and overloading, thereby reducing sending time of user terminals, lowering mutual disturbance among user terminals, and prolonging standby time of user terminals.
Description
Technical field
The present invention relates to the cdma mobile communication technical field, relate in particular to a kind of method that realizes the user terminal access control.
Background technology
In mobile radio system, the Reverse Access Channel of user terminal by sharing initiates to insert at random, is fully used to guarantee Limited resources.The CDMA2000 system uses time slot formula ALOHA (Slotted ALOHA) agreement to realize random access procedure.The whole process of user terminal from the transmission access channel message to the affirmation message that receives (or taking defeat) this message is called access attempts, each transmission in the access attempts, be called access exploration, when user terminal when having service request to arrive or receiving the beep-page message of base station, on the Reverse Access Channel of sharing, send access exploration, in access attempts, access exploration divides in groups according to access exploration sequence (Access Probe Sequences).Each access exploration sequence is made up of 1+num_step access exploration, and sends on same access channel, represents the time of access exploration and access exploration sequence with Access Channel Slot.Access Channel Slot zero hour, access exploration begins to transmit.Access Channel Slot is determined by access channel prefix length and access message-length.The access channel prefix length is 1+PAM_SZ, access channel message length is 3+MAX_CAP_SZ, therefore the slot length of access channel is determined by parameter PAM_SZ and MAX_CAP_SZ, and they are provided with in access parameter messages (APM) by the base station and by corresponding paging channel informing user terminal.
In the ALOHA agreement, because the randomness that user terminal initiate to insert, if when having plural user terminal to initiate to insert, access interference will take place in an Access Channel Slot, cause access failure.If according to service request, when needing the user terminal of connecting system more and more, promptly when the access channel load was transshipped, the probability that access interference then takes place was with increasing, cause the normalization throughput of access channel to be index decreased, the access success rate of user terminal reduces greatly.
But under different loads, the principal element that influences user terminal access success rate is different, in the time of from foregoing description, can obtaining access channel load overload, the principal element that influence inserts success rate is bigger collision probability, but during as if access channel load nonoverload, the principal element that influence inserts success rate but is, the base station is to the capture ability of access channel message, when the base station descends to the capture ability of access channel message, make connection reliability reduce, cause the access success rate of user terminal to reduce greatly.
In sum, press at present user terminal inserted and control, with the access success rate of user terminal in the raising system.
Summary of the invention
The object of the present invention is to provide a kind of method that realizes the user terminal access control, in order to improve the access success rate of user terminal in the mobile communication system.
In order to realize the foregoing invention purpose, the present invention specifically is achieved in that
A kind of method that realizes the user terminal access control comprises following treatment step:
Step 1 according to access channel loading condition and predefined access channel load overload threshold in the some cycles of base station estimation, is determined the overload sign of current access channel;
Step 2, judge the overload sign of described current access channel and former access channel overload sign compare whether identical, if then keep former access channel overload sign constant, the flow process end; Otherwise, change step 3 over to;
Step 3 is adjusted Access Channel Slot length according to access channel overload sign.
The method of described realization user terminal access control further comprises following treatment step:
Step 4, the access parameter messages in the updating cost message of base station, and the access parameter messages that upgrades is sent to user terminal by paging channel;
Step 5, user terminal are received new access parameter messages, upgrade the access channel message that subscriber terminal side is preserved;
Step 6, user terminal sends access exploration.
In the method for described user terminal access control, described overload threshold comprises, overload Upper threshold and overload Lower Threshold;
The described overload sign of determining current access channel specifically comprises the steps:
Step 11 judges that current access channel load whether more than or equal to the overload Upper threshold, is designated overload if overload then is set, and changes step 2 over to; Otherwise, change step 12 over to;
Step 12 judges that current access channel load whether smaller or equal to the overload Lower Threshold, is designated nonoverload if overload then is set, and changes step 2 over to, otherwise, keep former access channel overload sign constant, flow process finishes.
In the method for described user terminal access control, described access channel overload Upper threshold and overload Lower Threshold are determined according to access channel loading condition in the some cycles.
In the method for described user terminal access control, in the described step 2, if current access channel overload is designated overload, judge then whether this access channel overload sign that preserve the base station is overload, if then keep access channel overload sign constant, flow process finishes, otherwise, change step 3 over to;
If current access channel overload is designated nonoverload, judge then whether this access channel overload sign that preserve the base station is nonoverload, if, then keep access channel overload sign constant, flow process finishes, otherwise, change step 3 over to.
In the method for described user terminal access control, in the described step 3, carry out the adjustment of Access Channel Slot length, specifically comprise the steps: according to access channel overload sign
Step 31, adjustment insert search parameter;
Step 32 is determined the access channel prefix length according to access channel number that disposes on base station ic search capability, the chip and adjusted access search parameter;
Step 33 according to the access channel prefix length that obtains, is determined Access Channel Slot length.
In the method for described user terminal access control, described access search parameter comprises, inserts search window width, each searching times that inserts before catching;
If the access channel overload is designated overload, then reduce to insert search window width and described searching times;
If the access channel overload is designated nonoverload, then recovers to insert the search window width to radius of society, and increase described searching times.
In the method for described user terminal access control, it is the minimum value of Access Preamble length that described access channel overload obtains when being designated overload, revises and obtains the PAM_SZ minimum value, determines Access Channel Slot length.
Compared with prior art, the method of the invention, weight according to the access channel load passes through to adjust the access channel prefix length, dynamically adjust Access Channel Slot length, reach under the access channel nonoverload with this and to improve connection reliability, reduce the access interference probability between user terminal during overload, and then improved user terminal and inserted success rate.Under access channel load overload, the inventive method has also been improved the access slot length of user terminal, has reduced the user terminal transmitting time with this, reduces the phase mutual interference between user terminal, has prolonged the user terminal stand-by time.
Description of drawings
Fig. 1 is the process chart of the present invention's one specific embodiment;
Fig. 2 is definite flow chart of base station's access channel overload sign among the embodiment of the present invention;
Fig. 3 is that the access channel prefix length is adjusted flow chart among the embodiment of the present invention.
Embodiment
When using the ALOHA agreement, under the certain situation of access channel load, the probability that user terminal clashes is that Access Channel Slot length is short more along with the proportional variation of Access Channel Slot length, the probability that clashes will be more little, opposite, when Access Channel Slot length is long more, the probability that then clashes will be big more, if therefore can be according to the loading condition of access channel, dynamically adjust Access Channel Slot length, then just can reduce the probability of access interference, improve and insert success rate.
When inserting the load overload, the probability that user terminal clashes increases greatly, but when inserting the load nonoverload, because Access Channel Slot length is directly proportional with the ability that access channel message is caught in the base station, Access Channel Slot length is long more, the ability of then catching access channel message is strong more, otherwise, weak more, if therefore can be according to the loading condition of access channel, dynamically adjust Access Channel Slot length, then can improve the user terminal connection reliability, improve and insert success rate.
Because, Access Channel Slot length is determined by access channel prefix length and access message-length, consider compatibility to variety of protocol version number mobile phone, the length that inserts message is generally more fixing, and the access channel prefix length depends on factors such as base station chips search capability and access channel search parameter, under the situation that the chip search capability is determined, can reach the purpose of adjusting the access channel prefix length by adjusting the access channel search parameter.
Based on above statement, basic fundamental thought of the present invention is, when access channel load nonoverload, by adjusting search parameter, suitably strengthen the access channel prefix length, when the access channel load is transshipped, reduce the access channel prefix length, promptly dynamically adjust the access channel prefix length according to the access channel loading condition, thereby adjust Access Channel Slot length, improve the access success rate of user terminal, realize access control, especially the control of access channel load overload user terminal.
Below in conjunction with the drawings and specific embodiments the inventive method is elaborated.
As shown in Figure 1, the main treatment step of the present invention's one specific embodiment is as follows:
Step 11, access channel loading condition and predefined overload threshold are relatively determined the overload sign of current access channel in the base station estimation some cycles; Judge current access channel overload sign and former access channel overload sign compare whether identical, if then keep former access channel overload sign constant, the flow process end; Otherwise, change step 12 over to and handle;
Step 12, the base station is carried out the adjustment of Access Channel Slot length according to access channel overload sign by adjusting the access channel prefix length;
Step 13, the access parameter messages (APM) in the updating cost message of base station, and the access parameter messages that upgrades is sent to user terminal by paging channel;
Step 14, user terminal are received new access parameter messages, upgrade the access channel message that subscriber terminal side is preserved;
Step 15, when service request arrived, user terminal sent access exploration.
Because during the access channel overload, often paging channel load is also very heavy, if when whether definite access channel load transships, if an overload threshold only is set, think that when the base station access channel frequently changes between overload and nonoverload so, then send the access parameter messages that upgrades, the great like this burden that increases paging channel to user terminal continually by paging channel.Therefore 2 overload threshold are set, promptly transship Upper threshold and overload Lower Threshold, described overload threshold is to determine according to the access channel loading condition in the some cycles.
In the described step 11, the base station determines that the step of access channel overload sign is as follows: when access channel load during more than or equal to the overload Upper threshold, overload is set is designated overload, when the access channel load smaller or equal to overload during Lower Threshold, overload is set is designated nonoverload, when the access channel load during Upper threshold, then keeps original access channel overload sign not change greater than the overload Lower Threshold and less than overload.
As shown in Figure 2, described step 11 specifically comprises the steps:
Step 24 keeps former access channel overload sign constant, and flow process finishes;
Step 26 is revised the access channel overload and is designated overload, changes step 12 over to and carries out the Access Channel Slot length adjustment;
Step 27 judges whether the former access channel overload sign that preserve the base station is nonoverload, if then change step 24 over to, otherwise changes step 28 over to;
As shown in Figure 3, carrying out the Access Channel Slot length adjustment in the described step 12 further comprises the steps:
Step 31, insert the adjustment of search window width according to access channel overload sign;
If current access channel overload is designated overload, then reduce to insert the search window width, if current access channel overload is designated nonoverload, then recover to insert the search window width to radius of society.
Step 32, according to access channel overload sign, adjust each searching times that inserts before catching;
If the access channel overload is designated overload, then reduce searching times, if overload is designated nonoverload, then strengthen searching times.
Step 33, obtain the access channel prefix length according to the access channel number that disposes on base station ic search capability, the chip, search window width and searching times.
Wherein,, obtain minimum access channel prefix length this moment, and revise and obtain the PAM_SZ minimum value, determine Access Channel Slot length if access channel overload is designated overload.
A kind of method that realizes the user terminal access control provided by the present invention that below described in detail is in conjunction with specific embodiments more than implemented an explanation of example, just in order to help to understand core concept of the present invention.Under the situation that does not deviate from spirit of the present invention and essence, be familiar with the change part of those skilled in the relevant art to embodiment and range of application, all should belong to the excursion of the appended claim of the present invention.
Claims (9)
1. a method that realizes the user terminal access control is characterized in that, comprises following treatment step:
Step 1 according to access channel loading condition and predefined access channel load overload threshold in the some cycles of base station estimation, is determined the overload sign of current access channel;
Step 2, judge the overload sign of described current access channel and former access channel overload sign compare whether identical, if then keep former access channel overload sign constant, the flow process end; Otherwise, change step 3 over to;
Step 3 is adjusted Access Channel Slot length according to access channel overload sign.
2. the method for realization user terminal as claimed in claim 1 access control is characterized in that, also comprises following treatment step:
Step 4, the access parameter messages in the updating cost message of base station, and the access parameter messages that upgrades is sent to user terminal by paging channel;
Step 5, user terminal are received new access parameter messages, upgrade the access channel message that subscriber terminal side is preserved;
Step 6, user terminal sends access exploration.
3. the method for user terminal access control as claimed in claim 1 or 2 is characterized in that,
Described overload threshold comprises, overload Upper threshold and overload Lower Threshold;
The described overload sign of determining current access channel specifically comprises the steps:
Step 11 judges that current access channel load whether more than or equal to the overload Upper threshold, is designated overload if overload then is set, and changes step 2 over to; Otherwise, change step 12 over to;
Step 12 judges that current access channel load whether smaller or equal to the overload Lower Threshold, is designated nonoverload if overload then is set, and changes step 2 over to, otherwise, keep former access channel overload sign constant, flow process finishes.
4. the method for user terminal access control as claimed in claim 3 is characterized in that,
Described access channel overload Upper threshold and overload Lower Threshold are determined according to access channel loading condition in the some cycles.
5. the method for user terminal access control as claimed in claim 3 is characterized in that, in the described step 2,
If current access channel overload is designated overload, judge then whether this access channel overload sign that preserve the base station is overload, if, then keep access channel overload sign constant, flow process finishes, otherwise, change step 3 over to;
If current access channel overload is designated nonoverload, judge then whether this access channel overload sign that preserve the base station is nonoverload, if, then keep access channel overload sign constant, flow process finishes, otherwise, change step 3 over to.
6. the method for user terminal access control as claimed in claim 1 is characterized in that, in the described step 3, carries out the adjustment of Access Channel Slot length according to access channel overload sign, specifically comprises the steps:
Step 31, adjustment insert search parameter;
Step 32 is determined the access channel prefix length according to access channel number that disposes on base station ic search capability, the chip and adjusted access search parameter;
Step 33 according to the access channel prefix length that obtains, is determined Access Channel Slot length.
7. the method for user terminal access control as claimed in claim 5 is characterized in that, in the described step 3, carries out the adjustment of Access Channel Slot length according to access channel overload sign, specifically comprises the steps:
Step 31, adjustment insert search parameter;
Step 32 is determined the access channel prefix length according to access channel number that disposes on base station ic search capability, the chip and adjusted access search parameter;
Step 33 according to the access channel prefix length that obtains, is determined Access Channel Slot length.
8. as the method for claim 6 or 7 described user terminal access controls, it is characterized in that:
Described access search parameter comprises, inserts search window width, each searching times that inserts before catching;
If the access channel overload is designated overload, then reduce to insert search window width and described searching times;
If the access channel overload is designated nonoverload, then recovers to insert the search window width to radius of society, and increase described searching times.
9. the method for user terminal access control as claimed in claim 8 is characterized in that:
It is the minimum value of Access Preamble length that described access channel overload obtains when being designated overload, revises and obtains the PAM_SZ minimum value, determines Access Channel Slot length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100043162A CN101227723B (en) | 2008-01-21 | 2008-01-21 | Method for implementing subscriber terminal access control |
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| CN2008100043162A CN101227723B (en) | 2008-01-21 | 2008-01-21 | Method for implementing subscriber terminal access control |
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| CN101227723A true CN101227723A (en) | 2008-07-23 |
| CN101227723B CN101227723B (en) | 2011-03-16 |
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| CN2008100043162A Expired - Fee Related CN101227723B (en) | 2008-01-21 | 2008-01-21 | Method for implementing subscriber terminal access control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032414A1 (en) * | 2009-09-15 | 2011-03-24 | 中兴通讯股份有限公司 | Method and device for sending access parameter messages |
| CN102340548A (en) * | 2010-07-23 | 2012-02-01 | 中兴通讯股份有限公司 | Control method and device for IPv6 (internet protocol version 6) user access |
| CN110870192A (en) * | 2016-10-28 | 2020-03-06 | 因特莱索有限责任公司 | Load identification AC power supply with control and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9917317B1 (en) * | 1999-05-26 | 2013-09-17 | "Method and device for random access control in a mobile communication network" | |
| CN1152500C (en) * | 2000-12-07 | 2004-06-02 | 华为技术有限公司 | Mobile station acces scontrol method for CDMA system |
| CN1777333B (en) * | 2005-12-22 | 2010-12-29 | 北京邮电大学 | Random access scheme for communication system |
| CN100496141C (en) * | 2006-01-18 | 2009-06-03 | 华为技术有限公司 | Method and system for connecting conflict avoidance in radio communication |
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2008
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032414A1 (en) * | 2009-09-15 | 2011-03-24 | 中兴通讯股份有限公司 | Method and device for sending access parameter messages |
| CN102340548A (en) * | 2010-07-23 | 2012-02-01 | 中兴通讯股份有限公司 | Control method and device for IPv6 (internet protocol version 6) user access |
| CN102340548B (en) * | 2010-07-23 | 2015-09-16 | 中兴通讯股份有限公司 | A kind of control method of IPv6 user's access and device |
| CN110870192A (en) * | 2016-10-28 | 2020-03-06 | 因特莱索有限责任公司 | Load identification AC power supply with control and method |
| CN110870192B (en) * | 2016-10-28 | 2021-11-12 | 因特莱索有限责任公司 | Load identification AC power supply with control and method |
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| CN101227723B (en) | 2011-03-16 |
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