CN101212766A - Method for load balancing among frequency points in multi-frequency point TD-SCDMA system - Google Patents
Method for load balancing among frequency points in multi-frequency point TD-SCDMA system Download PDFInfo
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Abstract
The invention discloses a load balancing method for frequency points in a multi-frequency point TD-SCDMA system, which relates to a multi-frequency point technology in the TD-SCDMA and is invented for solving the problem that different frequency points can not be selected according to the speed of a user in the prior art. The load balancing method for the frequency points in the multi-frequency point TD-SCDMA system comprises the following steps: (1) collecting users who need to transfer the frequency points according to classification of the business speed of the users; (2) collecting the frequency points met load balancing conditions; (3) connecting the users who need to transfer the frequency points to the frequency points met the load balancing conditions according to the business speed of the users. Low-speed users only need to choose a best time slot between an upstream direction and a downstream direction, while high-speed users need to choose the best time slot at the upstream direction and the downstream direction. The load balancing method is used in the multi-frequency point TD-SCDMA system to realize the transference among the frequency points of the users.
Description
Technical field
The present invention relates to the multifrequency point technology, particularly the method for the interior balanced load of multi-frequency-point community in the TD-SCDMA system.
Background technology
In the TD-SCDMA system, the theoretical heap(ed) capacity of single subdistrict is the voice user of 23 CS12.2k, just need many cloth base station to satisfy the demand of capacity at the bigger hot zones of telephone traffic, arrange that at areal a plurality of different base stations need introduce multi-transceiver technology, traditional multi-transceiver technology is made up of the identical alien-frequency district in a plurality of overlay areas, because the TD-SCDMA system is a time-division system, if use traditional multi-transceiver technology, then can cause Primary Common Control Physical Channel serious interference in zero time slot.
In order to address this problem, Datang Mobile and Siemens in June, 2004 in the 5th plenary session of first working group (TC5WG1) of CCSA (Chinese communication Association for Standardization) wireless communication technology Working Committee, propose in the TD-SCDMA system, use the multifrequency point technology, be also referred to as N frequency technology.The N frequency technology of TD-SCDMA system is different from the N frequency technology of other cdma systems, the N frequency point cell of TD-SCDMA system is divided into a main carrier frequency and several assistant carrier frequencies, the all shared cover S-CCPCH (auxilliary public physics control information) of UE on all carrier frequency (subscriber equipment), PRACH (Physical Random Access Channel), DwPCH (descending scramble channel), PICH common signal channels such as (Page Indication Channels), these common signal channels only are carried on the main carrier frequency.So in fact, all frequencies in N frequency point cell all belong to a sub-district, so the switching between frequency do not belong to the switching on the ordinary meaning, and can only belong to the category that cell re-configuration is put.
After introducing N frequency technology, the capacity of sub-district is N times under original single carrier frequency situation in theory, solved TD-SCDMA system cell capacity drawback less than normal to a certain extent, and after UE resides in a frequency point cell, will select a suitable frequency to carry its business if will set up dedicated channel.When the one or more frequencies in the sub-district occur under the situation of traffic overload, can migrate on the lighter frequencies of other loads by transshipping the certain customers of frequency, like this can be under the prerequisite of not losing user QoS quality, allow the load of overload frequency effectively reduce, thereby prevent from large-area conversation loss to occur because the load in the sub-district is too high, guaranteed the fail safe of system, and made the power of each frequency, a sign indicating number resource is effectively utilized.
In the cdma system of other standards, the load balancing strategy of multi-carrier district is to select UE is switched to the lighter frequency of load at present.For load in the system of FDD (frequency division numeral duplex) standard is to be that minimum particle size is assessed with the sub-district, therefore as long as the load of each sub-district of multi-carrier district carries out simply relatively just can picking out the lightest sub-district of load; And for the N frequency point cell in the TD-SCDMA system, load is that minimum particle size is assessed and weighed with the time slot, and the load of each time slot is inequality in frequency, and separate, is independent of each other.The low speed business can be carried at single time slot, a time slot in the TD-SCDMA system can be equal to sub-district of other standard cdma systems in such cases, but high speed business often needs to stride the time slot carrying, with each independently time slot connect, at this moment, a time slot in the TD-SCDMA system can not be equal to sub-district of other standard cdma systems.So the TD-SCDMA system can't use the frequency load equalization method in other standard cdma system, must redesign a load equalization method, how to be various different rates requirements in the TD-SCDMA system, selecting different frequent points according to different criterions is exactly the key of this load equalization method.
Summary of the invention
For overcoming above-mentioned defective, the object of the present invention is to provide and a kind ofly the user of different rates requirement in the overload frequency can be selected to migrate to the load equalization method between the multiple frequency spot TD-SCDMA system intermediate-frequeney point in other different frequent points.
To achieve the above object of the invention, the load equalization method between multiple frequency spot TD-SCDMA system intermediate-frequeney point of the present invention is as follows:
(1) need carry out the user that frequency moves according to user's service rate categorised collection;
(2) collect the frequency that satisfies the load balancing condition;
(3) service rate according to the user is linked into the frequency that satisfies the load balancing condition with the user that needs carry out the frequency migration.
Wherein, described step (1) is specially: carry the low speed business if the needs that the overload frequency is selected carry out the user of frequency migration, then join the circuit-switched user collection; Do not carry the low speed business if the needs that the overload frequency is selected carry out the user of frequency migration, then join packet switching user's collection.
Wherein, described step (2) is specially:
(21) ascending time slot that all loads in the N frequency point cell is lower than the load balancing thresholding joins the ascending time slot collection;
(22) descending time slot that all loads in the N frequency point cell is lower than the load balancing thresholding joins the descending time slot collection;
(23) will concentrate at ascending time slot collection and descending time slot and all exist the frequency of at least one time slot to join candidate's frequency collection.
Wherein, described step (3) is specially:
(31) user that circuit-switched user is concentrated is linked into the frequency that satisfies the load balancing condition;
(32) user that the packet switching user is concentrated is linked into the frequency that satisfies the load balancing condition.
Wherein, described step (31) is specially:
(311) user who selects circuit-switched user to concentrate, and choose the concentrated user of circuit-switched user for this and select frequency, ascending time slot and descending time slot;
(312) after the user who this is chosen circuit-switched user concentrate is linked into the combination of selected frequency, ascending time slot and descending time slot, delete this ascending time slot and descending time slot, and this user who chooses circuit-switched user to concentrate of mark;
(313) upgrade candidate's frequency collection, and judge whether candidate's frequency collection is empty, if candidate's frequency collection is empty, execution in step (314); If candidate's frequency collection is not empty, execution in step (315);
(314) notice packet is exchangeed subscriber unmarked user's frequency migration failure that collection all users and circuit-switched user are concentrated, and flow process finishes;
(315) whether decision circuitry is exchangeed subscriber concentrated user and is traveled through and finish, if traversal finishes execution in step (32); If traversal does not finish, return execution in step (311).
Wherein, described step (32) is specially:
(321) user who selects the packet switching user to concentrate, and concentrate at candidate's frequency and to choose the frequency that meets the high speed business requirement, then execution in step (322) of frequency success chosen; If choose the frequency failure, user's frequency migration failure and the execution in step (325) of then notifying this to choose the packet switching user to concentrate;
(322) user who chooses the packet switching user to concentrate this is linked into the frequency of choosing, this user who chooses the packet switching user to concentrate of mark, and this frequency of choosing concentrated deletion from candidate's frequency;
(323) judge whether candidate's frequency collection is empty, if candidate's frequency collection is empty, execution in step (324); If candidate's frequency collection is not empty, execution in step (325);
(324) notice packet is exchangeed subscriber concentrated unlabelled user's frequency migration failure, and flow process finishes;
(325) judge whether user that the packet switching user concentrates travels through and finish that if traversal finishes, flow process finishes; If traversal does not finish, return execution in step (321).
Wherein, the user for choosing circuit-switched user to concentrate in the described step (311) selects the method for frequency, ascending time slot and descending time slot to be:
If this user who chooses circuit-switched user to concentrate is owing to up overload is carried out the frequency migration, then select the lightest ascending time slot of load in the ascending time slot set, then according to determining migration frequency and descending time slot by selected ascending time slot;
If this user who chooses circuit-switched user to concentrate is owing to descending overload is carried out the frequency migration, then select the lightest descending time slot of load in the descending time slot set, then according to determining migration frequency and ascending time slot by selected descending time slot.
Wherein, the method for the renewal candidate frequency collection in the described step (313) is: do not have time slot if selected frequency is concentrated at ascending time slot collection or descending time slot, then this frequency is concentrated deletion from candidate's frequency.
Wherein, concentrating at candidate's frequency in the described step (321) chosen the method that meets the frequency that high speed business requires and be specially: the frequency that ascending time slot and descending time slot are all met user's request saves as and allows the frequency that inserts, if allow the frequency of access, then judge and choose the frequency failure.
Wherein, if the frequency that described permission inserts is then carried out following steps more than one:
If this user who chooses the packet switching user to concentrate is owing to up overload is carried out the frequency migration, then selected frequency is the lightest frequency of average load of all ascending time slots in the frequency that allows to insert;
If this user who chooses the packet switching user to concentrate is owing to descending overload is carried out the frequency migration, then selected frequency is the lightest frequency of average load of all descending time slots in the frequency that allows to insert.
By the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of technique scheme, the user of carrying low speed speech business is moved to the lighter frequency of load, and when user place frequency is when carrying out the frequency migration owing to ascending time slot overload, the target frequency of its migration must be the lightest frequency of ascending time slot load; Otherwise when user place frequency is when carrying out the frequency migration owing to descending time slot overload, the target frequency of its migration must be the lightest frequency of descending time slot load.The total surplus code channel resource that the user of carrying high speed business is moved to ascending time slot and descending time slot all must satisfy the frequency of business demand, and, realize that the frequency of selecting is the lightest frequency of load in all frequencies that meet the demands by analysis to frequency time slot sequence number and timeslot number.Adopt the above-mentioned scheme not only can be in not reducing the N frequency point cell under the prerequisite of user's qos requirement, the load of effective reduction system, and make that each frequency time interval resource can reach effective load sharing effect in the sub-district, improve the stability and the robustness of system.
Description of drawings
Fig. 1 is the schematic diagram of the load equalization method between multiple frequency spot TD-SCDMA system intermediate-frequeney point of the present invention;
Fig. 2 is the flow chart of traversal circuit-switched user collection in the load equalization method between multiple frequency spot TD-SCDMA system intermediate-frequeney point of the present invention;
Fig. 3 is the flow chart of traversal packet switching user collection in the load equalization method between multiple frequency spot TD-SCDMA system intermediate-frequeney point of the present invention.
Embodiment
Below in conjunction with accompanying drawing the load equalization method between multiple frequency spot TD-SCDMA system intermediate-frequeney point of the present invention is described in detail.
When traffic overload appears in one or more frequency in the N frequency point cell, can select to transship PS business or CS business in the frequency, migrate to one or more lighter time slot of other frequencies loads.For the N frequency point cell, time slot in each frequency all belongs to a sub-district, can think that these time interval resources are resource pools, can use for the user, but the business that has same user simultaneously again can not be carried on the restriction of a plurality of frequencies simultaneously, just must guarantee to carry the time slot of same customer service in same frequency when selecting time slot.Because the time interval resource of all frequencies of N frequency point cell can carry user's business, so load equalization method between multiple frequency spot TD-SCDMA system intermediate-frequeney point of the present invention, a kind of overall control strategy from cell level is proposed, this method need be carried out the user that load is adjusted between frequency to each frequency, and available time interval resource carries out unified control and management.Determine to carry out the number of users that frequency moves simultaneously in the load control cycle according to certain principle, and the target frequency that moves of each user, guarantee that to greatest extent each user selects a suitable frequency, and the migration of this frequency need will transship user's selection that different rates requires in the frequency according to certain criterion and be migrated in other different frequencies, reduce the load of overload frequency effectively, guarantee the stability and the robustness of system.
As shown in Figure 1, the flow process that load equalization method adopted between above-mentioned multiple frequency spot TD-SCDMA system intermediate-frequeney point is as follows:
A, the user that need carry out frequency migration according to user's service rate categorised collection, the user that can need to carry out the frequency migration in each overload frequency in the N frequency point cell adds different set according to the difference of user's service rate.
The frequency of load balancing condition is satisfied in B, collection, and this frequency that satisfies the load balancing condition is added candidate's frequency collection, and the concrete grammar of this collection frequency is:
B1) ascending time slot load in the N frequency point cell is lower than the ascending time slot that pre-sets thresholding and joins set TSU (ascending time slot collection);
B2) descending time slot load in the N frequency point cell is lower than the descending time slot that pre-sets thresholding and joins set TSD (descending time slot collection);
B3) utilize top constructed set TSU and TSD to obtain candidate's frequency, there are one or more ascending time slots that belong to it in candidate's frequency and have one or more descending time slots that belong to it in set TSD at set TSU, then this frequency is the candidate's frequency that satisfies the load balancing condition in the N frequency point cell, and joins set Carricr (candidate's frequency collection).
C, according to user's service rate the user that needs carry out the frequency migration is linked into the frequency that satisfies the load balancing condition, concrete grammar is: carry out if desired the frequency migration user's carrying be the speech business of low speed, then enter step D; Carry out if desired frequency migration user's carrying be high speed business, then enter step e.
D, determine the frequency that the low speed speech business inserts, ascending time slot, the anabolic process of descending time slot, its idiographic flow is as follows:
D1) the selected frequency that carries out moves if current user is because of the up overload of affiliated frequency, then enters step D2; The selected frequency that carries out moves if current user is because of the descending overload of affiliated frequency, then enters step D5;
D2) in set TSU, seek a residue code channel resource and can satisfy business demand, and the lightest time slot TUi of load;
D3) the frequency Ci under definite this TUi in set Carrier;
D4) in set TSD, seek the highest time slot TDi of load that belongs to Ci, enter step D8;
D5) in set TSD, select a surplus resources can satisfy business demand, and the lightest time slot TDi of load;
D6) the frequency Ci under definite TDi in set Carrier;
D7) in set TSU, select a surplus resources can satisfy business demand, and the highest time slot TUi of load;
D8) select the active user is inserted Ci, TUi, TDi} represented frequency and time slot thereof, just the user is linked into the Ci frequency, and utilizes TUi time slot and TDi time slot bearer service;
D9) deletion time slot TUi from set TSU, deletion time slot TDi from set TSD;
D10) analyze set TSU and TSD,, then from Carrier, delete Ci if do not belong to the time slot of Ci among TSU or the TSD.
E, determine that the high speed business user allows the frequency that inserts, idiographic flow is as follows:
E1) each frequency among the traversal set Carrier;
E2) in set Carrier, seek such frequency, the total surplus code channel resource that belongs to all ascending time slots of this frequency in TSU can satisfy the service resources demand, and the total surplus code channel resource that belongs to all descending time slots of this frequency among the TSD can satisfy professional demand;
E3) statistics belongs among the TSU in set and satisfies all ascending time slot mean sequence of frequency that the G2 step requires number and record ascending time slot number; Statistics belongs to all descending time slot mean sequence number of the frequency that the G2 step requires among the TSD in set, and writes down descending timeslot number;
E4) if the active user be because under it selected adjustment of frequency up direction overload then enter step e 5; If the active user be because under it selected adjustment of frequency up direction overload then enter step e 6;
E5), then select to allow the user insert the frequency of ascending time slot mean sequence minimum if the frequency of up average time slot sequence number minimum has only one; If the maximum frequency of ascending time slot number in the frequency that the frequency of up average time slot sequence number minimum more than, is then selected to allow the user insert all ascending time slot mean sequence minimums; Change step e 7 over to after choosing frequency;
E6), then select to allow the user insert the frequency of ascending time slot mean sequence minimum if the frequency of descending average time slot sequence number minimum has only one; If the maximum frequency of descending time slot number in the frequency that the frequency of descending average time slot sequence number minimum more than, is then selected to allow the user insert all descending time slot mean sequence minimums;
E7) the current frequency of choosing of deletion from Carrier is proceeded next user is carried out the frequency migration.
By technique scheme, the present invention has realized following technique effect.The present invention can according to the different rate requirement of the different user in each overload frequency, select to migrate to different frequencies when the one or more frequencies of N frequency point cell transship.The user of carrying low speed speech business is moved to the lighter frequency of load, and when user place frequency be because the ascending time slot overload is carried out frequency when moving, the target frequency of its migration must be the ascending time slot the lightest frequency of loading; Otherwise when user place frequency is when carrying out the frequency migration owing to descending time slot overload, the target frequency of its migration must be the lightest frequency of descending time slot load.The total surplus code channel resource that the user of carrying high speed business is moved to ascending time slot and descending time slot all must satisfy the frequency of business demand, and, realize that the frequency of selecting is the lightest frequency of load in all frequencies that meet the demands by analysis to frequency time slot sequence number and timeslot number.Owing to adopt above-mentioned overall control strategy, not only can be in not reducing the N frequency point cell under the prerequisite of user's qos requirement, the effective load of reduction system, and make that each frequency time interval resource can reach effective load sharing effect in the sub-district, improve the stability and the robustness of system.
In above-mentioned embodiment, what needs consideration user was carried is low rate traffic or high-rate service, this is to add circuit-switched user collection (CS user's collection) by the user with low rate traffic in concrete enforcement, the user of high-rate service joins packet switching user's collection (PS user's collection), traveling through CS user collection and PS user then respectively collects and realizes, its concrete implementing procedure comprises the steps: as shown in Figures 2 and 3
Step 101: the low speed user that the needs that the frequency that will transship is selected carry out the frequency migration joins CS user's collection (set UserCS); Other users that the needs that the overload frequency is selected carry out the frequency migration join PS user's collection (set UserPS);
Step 102: the ascending time slot that all loads in the N frequency point cell is lower than the load balancing thresholding joins ascending time slot collection TSU, and the time slot among the ascending time slot collection TSU is sorted from small to large according to load, is convenient to like this ascending time slot is chosen;
Step 103: the descending time slot that all loads in the N frequency point cell is lower than the load balancing thresholding joins descending time slot collection TSD, and the time slot among the descending time slot collection TSD is sorted from small to large according to load, is convenient to like this descending time slot is chosen;
Step 104: will concentrate at ascending time slot collection and descending time slot all to exist the frequency of at least one time slot to join candidate's frequency collection Carrier, there are one or more ascending time slots that belong to it in just all candidate's frequencies at set TSU, and in set TSD, there are one or more descending time slots that belong to it, guarantee that selected frequency necessarily has ascending time slot and descending time slot to carry user's business simultaneously, and the ascending time slot here and descending time slot bucket must be loaded and be lower than threshold value;
Step 105: choose the next user of set among the UserCS, can add cocycle in this way and travel through each user among the UserCS;
Step 106: if this user is that the selected frequency that carries out moves because the up direction of its affiliated frequency transships, selected frequency is necessary for the lightest frequency of ascending time slot load, so enter step 107; If this user is that the selected frequency that carries out moves because the down direction of its affiliated frequency transships, then selected frequency is necessary for the lightest frequency of descending time slot load, so enter step 110;
Step 107: in ascending time slot collection TSU, seek the time slot that load is the lightest and surplus code channel resource can be met consumers' demand, and to note this time slot be TUi;
Step 108: the frequency under the ascending time slot that determining step 107 finds in candidate's frequency collection Carrier, and to note this frequency be Ci;
Step 109: in descending time slot collection TSD, seek one and belong to frequency Ci, load is the highest and the residue code channel resource can be met consumers' demand descending time slot, after noting this time slot and being TDi, execution in step 113;
Step 110: in descending time slot collection TSD, seek a time slot that load is the lightest and the residue code channel resource is met consumers' demand, and to charge to down this time slot be TDi;
Step 111: the frequency under the ascending time slot TDi that determining step 110 finds in candidate's frequency collection Carrier, and to note this frequency be Ci;
Step 112: in ascending time slot collection TSU, seek one belong to frequency Ci, load is the highest and surplus resources can satisfy the ascending time slot of user resources demand, after noting this time slot and being TUi, execution in step 113;
Step 113: the user is linked into selected frequency, i.e. { combination of TDi} shows that use frequency Ci and ascending time slot TUi thereof and descending time slot TDi carry this user's business, and this user of mark for Ci, TUi in active user's access;
Step 114: from ascending time slot collection TSU, delete TUi, from descending time slot collection TSD, delete Tdi;
Step 115: upgrade candidate's frequency collection, its method is: do not have time slot if selected frequency is concentrated at ascending time slot collection or descending time slot, then this frequency is concentrated deletion from candidate's frequency.Operation in this step is: judge among ascending time slot collection TSU or the descending time slot collection TSD whether ascending time slot or the descending time slot that belongs to frequency Ci is all arranged, if all have the ascending time slot or the descending time slot that belong to frequency Ci then to enter step 117; Otherwise enter step 116;
Step 116: deletion frequency Ci from candidate's frequency collection Carrier, guarantee that all frequencies among candidate's frequency collection Carrier have ascending time slot and descending time slot to carry user's business simultaneously, and the ascending time slot here and descending time slot bucket must be loaded and be lower than threshold value;
Step 117: judge that whether candidate's frequency collection Carrier is empty, if candidate's frequency collection Carrier is empty, then enters step 118; If candidate's frequency collection Carrier is not empty, then enter step 119;
Step 118: notice PS user collects unmarked user's frequency migration failure that all users and CS user concentrate, and flow process finishes;
Step 119: judge whether set UserCS is empty, if set UserCS is sky then enters step 120; If set UserCS is not empty otherwise returns step 105;
Step 120: choose the next user among the set UserPS, add cocycle in this way and just can travel through all users that gather among the UserPS;
Step 121: all frequencies of traversal candidate frequency collection Carrier, at first choose the next frequency of candidate's frequency collection Carrier, be recorded as frequency Cj;
Can travel through all frequencies of candidate's frequency collection Carrier by step 121, thereby be implemented among candidate's frequency collection Carrier and choose the frequency that meets the high speed business requirement, its frequency of selecting must be all ascending time slot residue code channel resource and descending time slot residue code channel resource all meet consumers' demand, its concrete steps of choosing frequency are as follows:
Step 122: all ascending time slot residue code channel resources (RU) that belong to current frequency Cj among the statistics ascending time slot collection TSU;
Step 123: whether all ascending time slot residue code channel resources of judging current frequency Cj can meet consumers' demand, if can meet consumers' demand, then execution in step 124; If can not meet consumers' demand, enter step 128;
Step 124: calculate the average sequence number of all ascending time slots that belong to current frequency Cj, and write down the result of average sequence number;
Step 125: all descending time slot residue code channel resources that belong to current frequency Cj among the statistics descending time slot collection TSD;
Step 126: whether all descending time slot residue code channel resources of judging current frequency Cj can meet consumers' demand, if can meet consumers' demand, then execution in step 127; If can not meet consumers' demand, enter step 128;
Step 127: calculate the average sequence number of all descending time slots that belong to current frequency Cj, write down the result of average sequence number, and preserve current frequency Cj;
Step 128: judge that whether candidate's frequency collection Carrier has traveled through, if traveled through, then enters step 129; Otherwise return execution in step 123;
Step 129: judge whether to the active user finds candidate's frequency that can insert, if, enter step 131 for the active user finds candidate's frequency that can insert; If, do not enter step 130 for the active user finds candidate's frequency that can insert;
Step 130: notify this user's frequency migration failure, enter step 139;
Step 131: if whether candidate's frequency that can insert more than one, then enters step 132 more than one; If have only one, enter step 135;
Step 132: carry out frequency adjustment if the user is selected because frequency up direction overload under it, then enter step 133; Carry out frequency adjustment if the user is selected because frequency down direction overload under it, enter step 134;
Step 133: the frequency of the average sequence number minimum of ascending time slot is as access frequency point in candidate's frequency that can insert, and promptly selected frequency is the lightest frequency of average load of all ascending time slots in the frequency that allows to insert, and execution in step 135;
Step 134: the frequency of the average sequence number minimum of descending time slot is as access frequency point in candidate's frequency that can insert, and promptly selected frequency is the lightest frequency of average load of all descending time slots in the frequency that allows to insert, and execution in step 135;
Step 135: but this user is inserted selected access frequency point, utilize ascending time slot and descending time slot bearer service in this frequency, with this user's mark;
Step 136: user's access frequency point that deletion is chosen from candidate's frequency collection Carrier, as long as realize having inserted high speed business, this frequency just no longer provides the time slot of bearer service for other users, because the carrying high speed business is easy to cause traffic overload;
Step 137: judge that whether candidate's frequency collection Carrier is empty, if Carrier is empty, then enters step 138; If Carrier is not empty, enter step 139;
Step 138: the unmarked user's frequency migration failure of all among the notice set UserPS, flow process finishes;
Step 139: judge whether UserPS has traveled through, if traveled through, then flow process finishes; If not do not traveled through then returned execution in step 120.
Claims (10)
1. the load equalization method between a multiple frequency spot TD-SCDMA system intermediate-frequeney point is characterized in that may further comprise the steps:
(1) need carry out the user that frequency moves according to user's service rate categorised collection;
(2) collect the frequency that satisfies the load balancing condition;
(3) service rate according to the user is linked into the frequency that satisfies the load balancing condition with the user that needs carry out the frequency migration.
2. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 1, it is characterized in that: described step (1) is specially: carry the low speed business if the needs that the overload frequency is selected carry out the user of frequency migration, then join the circuit-switched user collection; Do not carry the low speed business if the needs that the overload frequency is selected carry out the user of frequency migration, then join packet switching user's collection.
3. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 2, it is characterized in that: described step (2) is specially:
(21) ascending time slot that all loads in the N frequency point cell is lower than the load balancing thresholding joins the ascending time slot collection;
(22) descending time slot that all loads in the N frequency point cell is lower than the load balancing thresholding joins the descending time slot collection;
(23) will concentrate at ascending time slot collection and descending time slot and all exist the frequency of at least one time slot to join candidate's frequency collection.
4. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 3, it is characterized in that: described step (3) is specially:
(31) user that circuit-switched user is concentrated is linked into the frequency that satisfies the load balancing condition;
(32) user that the packet switching user is concentrated is linked into the frequency that satisfies the load balancing condition.
5. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 4, it is characterized in that: described step (31) is specially:
(311) user who selects circuit-switched user to concentrate, and choose the concentrated user of circuit-switched user for this and select frequency, ascending time slot and descending time slot;
(312) after the user who this is chosen circuit-switched user concentrate is linked into the combination of selected frequency, ascending time slot and descending time slot, delete this ascending time slot and descending time slot, and this user who chooses circuit-switched user to concentrate of mark;
(313) upgrade candidate's frequency collection, and judge whether candidate's frequency collection is empty, if candidate's frequency collection is empty, execution in step (314); If candidate's frequency collection is not empty, execution in step (315);
(314) notice packet is exchangeed subscriber unmarked user's frequency migration failure that collection all users and circuit-switched user are concentrated, and flow process finishes;
(315) whether decision circuitry is exchangeed subscriber concentrated user and is traveled through and finish, if traversal finishes execution in step (32); If traversal does not finish, return execution in step (311).
6. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 5, it is characterized in that: described step (32) is specially:
(321) user who selects the packet switching user to concentrate, and concentrate at candidate's frequency and to choose the frequency that meets the high speed business requirement, then execution in step (322) of frequency success chosen; If choose the frequency failure, user's frequency migration failure and the execution in step (325) of then notifying this to choose the packet switching user to concentrate;
(322) user who chooses the packet switching user to concentrate this is linked into the frequency of choosing, this user who chooses the packet switching user to concentrate of mark, and this frequency of choosing concentrated deletion from candidate's frequency;
(323) judge whether candidate's frequency collection is empty, if candidate's frequency collection is empty, execution in step (324); If candidate's frequency collection is not empty, execution in step (325);
(324) notice packet is exchangeed subscriber concentrated unlabelled user's frequency migration failure, and flow process finishes;
(325) judge whether user that the packet switching user concentrates travels through and finish that if traversal finishes, flow process finishes; If traversal does not finish, return execution in step (321).
7. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 5, it is characterized in that: the user for choosing circuit-switched user to concentrate in the described step (311) selects the method for frequency, ascending time slot and descending time slot to be:
If this user who chooses circuit-switched user to concentrate is owing to up overload is carried out the frequency migration, then select the lightest ascending time slot of load in the ascending time slot set, then according to determining migration frequency and descending time slot by selected ascending time slot;
If this user who chooses circuit-switched user to concentrate is owing to descending overload is carried out the frequency migration, then select the lightest descending time slot of load in the descending time slot set, then according to determining migration frequency and ascending time slot by selected descending time slot.
8. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 5, it is characterized in that: the method for the renewal candidate frequency collection in the described step (313) is: do not have time slot if selected frequency is concentrated at ascending time slot collection or descending time slot, then this frequency is concentrated deletion from candidate's frequency.
9. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 6, it is characterized in that: concentrating at candidate's frequency in the described step (321) chosen the method that meets the frequency that high speed business requires and be specially: the frequency that ascending time slot and descending time slot are all met user's request saves as and allows the frequency that inserts, if allow the frequency of access, then judge and choose the frequency failure.
10. according to the load equalization method between the described multiple frequency spot TD-SCDMA system intermediate-frequeney point of claim 9, it is characterized in that: if the frequency that described permission inserts is then carried out following steps more than one:
If this user who chooses the packet switching user to concentrate is owing to up overload is carried out the frequency migration, then selected frequency is the lightest frequency of average load of all ascending time slots in the frequency that allows to insert;
If this user who chooses the packet switching user to concentrate is owing to descending overload is carried out the frequency migration, then selected frequency is the lightest frequency of average load of all descending time slots in the frequency that allows to insert.
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| CNA2006101702740A CN101212766A (en) | 2006-12-26 | 2006-12-26 | Method for load balancing among frequency points in multi-frequency point TD-SCDMA system |
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| CNA2006101702740A CN101212766A (en) | 2006-12-26 | 2006-12-26 | Method for load balancing among frequency points in multi-frequency point TD-SCDMA system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854659A (en) * | 2010-06-04 | 2010-10-06 | 中兴通讯股份有限公司 | Method and base station for controlling forward transmitting power overload |
| CN102638895A (en) * | 2012-04-05 | 2012-08-15 | 大唐移动通信设备有限公司 | Method and device for distributing scheduling resources |
| CN103747488A (en) * | 2014-01-28 | 2014-04-23 | 大唐移动通信设备有限公司 | Carrier balancing method, device and system |
| CN112911716A (en) * | 2021-02-05 | 2021-06-04 | 贵州久华信电子技术有限公司 | Data transmission method, device, equipment and storage medium |
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2006
- 2006-12-26 CN CNA2006101702740A patent/CN101212766A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854659A (en) * | 2010-06-04 | 2010-10-06 | 中兴通讯股份有限公司 | Method and base station for controlling forward transmitting power overload |
| CN102638895A (en) * | 2012-04-05 | 2012-08-15 | 大唐移动通信设备有限公司 | Method and device for distributing scheduling resources |
| CN102638895B (en) * | 2012-04-05 | 2015-02-04 | 大唐移动通信设备有限公司 | Method and device for distributing scheduling resources |
| CN103747488A (en) * | 2014-01-28 | 2014-04-23 | 大唐移动通信设备有限公司 | Carrier balancing method, device and system |
| CN103747488B (en) * | 2014-01-28 | 2017-02-22 | 大唐移动通信设备有限公司 | carrier balancing method, device and system |
| CN112911716A (en) * | 2021-02-05 | 2021-06-04 | 贵州久华信电子技术有限公司 | Data transmission method, device, equipment and storage medium |
| CN112911716B (en) * | 2021-02-05 | 2023-02-17 | 贵州久华信电子技术有限公司 | Data transmission method, device, equipment and storage medium |
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