CN101174860B - Forward power overloads control method - Google Patents
Forward power overloads control method Download PDFInfo
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- CN101174860B CN101174860B CN2007101773473A CN200710177347A CN101174860B CN 101174860 B CN101174860 B CN 101174860B CN 2007101773473 A CN2007101773473 A CN 2007101773473A CN 200710177347 A CN200710177347 A CN 200710177347A CN 101174860 B CN101174860 B CN 101174860B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention discloses a method for the forward power overload control; a plurality of power thresholds is arranged on the user terminal and a plurality of overload thresholds is arranged at the base station, and the correspondence between the power and overload thresholds is established; the method also comprises that the method judge that whether the forward gross emitting power of the base station increases to surpass a overload threshold; if the power surpasses, the forward emitting power of the user terminal is forbidden to be lifted if the forward-link emitting power is more than the power threshold which is corresponding to the overload threshold. With the present invention, when the forward emitting power of the base station is overloaded, the user terminal with comparatively large power is limited to lift power first; and then when the overload situation becomes more and more serious, the user terminal with comparatively small power is limited to lift power; in this way, the overload situation of the base station is effectively alleviated and the adverse effect of user terminal which is provided with good forward-link chain circuit and low forward-link emitting power is prevented; moreover, the service quality is effectively ensured.
Description
Technical field
The present invention relates to base station transmitting power overload control technology in the mobile communication system, relate in particular to a kind of forward power overload control method.
Background technology
In code division multiple access mobile communcations systems such as (CDMA), forward traffic channel can be set up at synchronization and a plurality of user terminal in the base station.The base station utilizes specific power control algorithm, according to the needed transmitting power of each user terminal transmitting power on every forward traffic channel, so that guarantee normal service communication.
Along with the user terminal in the base station range is on the increase, the needed gross power of these user terminals is increasing, and forward direction total transmitting power in base station also just increases thereupon.When the total transmitting power of forward direction surpassed the specified transmitting power in base station, base station system entered unsettled overload.Under overload, the base station can not guarantee the percentage number of the shared total transmitting power of forward power, and working the multiple business such as maintenance, switching of exhaling, converse for user terminal all has considerable influence.Therefore, the control of the forward power overload of base station system just seems extremely important.
According to existing power overload control mode, the base station is judged after the forward transmitting power overload, taked following measure successively: dismounting high-rate traffic channel, the travelling carriage that the restriction soft handover is carried out, restriction is new insert, forbid all forward traffic channel bring to powers etc.Use existing forward power overload control method, when seriously transshipping in system, the lifting of all forward traffic channel power can be forbidden in the base station.Though this mode can be alleviated overload, but better for forward link, as to use low forward emitting power user terminal, if it is a little bit poorer a little that link becomes, and limit its lifting forward emitting power this moment, might cause this user terminal call drop so, thereby increase the cutting off rate of communication system.On the other hand, little behind the call drop because the transmitting power of this type user terminals is very little to the contribution that reduces system overload, so can not effectively alleviate overload.
Therefore, need a kind ofly can effectively alleviate the forward power overload control method that overload does not influence the above-mentioned type user terminal again.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of forward power overload control method, is used for effectively alleviating the overload of base station.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of forward power overload control method, a plurality of power threshold of user terminal and a plurality of overload threshold of base station are set, and set up corresponding relation between described power threshold and the overload threshold, this method also comprises: judge whether forward direction total transmitting power in base station rises above an overload threshold, if then forbid the forward emitting power of lifting forward emitting power greater than the user terminal of the power threshold corresponding with described overload threshold.
This method further comprises: rise when surpassing an overload threshold judging the total transmitting power of base station forward direction, forbid that the lifting forward emitting power equals the forward emitting power of the user terminal of the power threshold corresponding with described overload threshold.
In technique scheme, forbid that the step of the forward emitting power of lifting user terminal comprises: with the forward emitting power threshold setting of described user terminal is the current forward emitting power value of this user terminal.
This method further comprises: rise when surpassing an overload threshold judging the total transmitting power of base station forward direction, allow the lifting forward emitting power to equal and/or less than the forward emitting power of the user terminal of the power threshold corresponding with described overload threshold.
In technique scheme, allow the step of the forward emitting power of lifting user terminal to comprise:
With the forward emitting power threshold setting of described user terminal is the maximum power threshold value.
This method further comprises: when judging the total transmitting power of base station forward direction and drop to less than an overload threshold, remove forward emitting power is less than or equal to the restriction more than or equal to the user terminal lifting forward emitting power of this next power threshold of power threshold of the power threshold corresponding with described overload threshold and forward emitting power.
In technique scheme, the step of removing the restriction of user terminal forward emitting power comprises:
With the forward emitting power threshold setting of described user terminal is the maximum power threshold value.
In addition, this method further comprises the step that sets in advance described maximum power threshold value.
By enforcement of the present invention, when the forward transmitting power overload of base station, at first limit more high-power user terminal lifting power, when overload is tending towards serious, just further limit smaller power user terminal lifting power, like this, not only alleviated the overload of base station effectively, the harmful effect of can also avoid better to forward link in the prior art, using the user terminal of low forward emitting power has guaranteed service quality effectively.
Description of drawings
Fig. 1 is the schematic diagram that the overloaded base stations state grade is divided in the embodiment of the invention;
Fig. 2 is the schematic diagram of user terminal grade classification in the embodiment of the invention;
Fig. 3 is the schematic flow sheet of forward power overload control method in the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.
In an embodiment of the present invention, a plurality of power threshold of user terminal are set, user terminal is divided into different brackets according to its forward power size, a plurality of overload threshold of the total transmitting power of base station forward direction are set, the base station is divided into the overload of a plurality of grades, and the corresponding relation between user terminal power threshold and the overloaded base stations thresholding is set.When overloaded base stations, those grades of restriction lifting are higher to be the forward power of the big user terminal of forward power, when overload was tending towards serious, limiting those grades of lifting low was the forward power of the less user terminal of forward power, thereby alleviates the overload of base station effectively.
Fig. 1 is the schematic diagram that the overloaded base stations state grade is divided.Fig. 2 is the schematic diagram of user terminal grade classification.
As shown in Figure 1, the overload that according to the total transmitting power of base station forward direction the overload of base station is divided into a plurality of grades such as normal condition, the first estate overload, the second grade overload, tertiary gradient overload, fourth estate overload.For for simplicity, only be divided into fourth estate overload here, but the present invention is not limited thereto.In embodiments of the present invention, the overload threshold that overloads at different levels are set is respectively: overload threshold A, overload threshold B, overload threshold C and overload threshold D.
According to above-mentioned division, when forward direction total transmitting power in base station during less than overload threshold A, the base station is in normal condition; When forward direction total transmitting power in base station during more than or equal to overload threshold A and less than overload threshold B, the base station is in the first estate overload; When forward direction total transmitting power in base station during more than or equal to overload threshold B and less than overload threshold C, the base station is in the second grade overload; When forward direction total transmitting power in base station during more than or equal to overload threshold C and less than overload threshold D, the base station is in tertiary gradient overload; When forward direction total transmitting power in base station during more than or equal to overload threshold D, the base station is in fourth estate overload.
As shown in Figure 2, user terminal power threshold power threshold A, power threshold B, power threshold C and power threshold D are set in the base station, user terminal is divided into the first estate user terminal, the second class user terminal, tertiary gradient user terminal and fourth estate user terminal.In addition, can also set in advance the maximum power threshold value.
As shown in Figure 2, when the forward emitting power of user terminal more than or equal to 0 and during less than power threshold C, this user terminal is a fourth estate user terminal; When the forward emitting power of user terminal during more than or equal to power threshold C and less than power threshold B, this user terminal is a tertiary gradient user terminal; When the forward emitting power of user terminal during more than or equal to power threshold B and less than power threshold A, this user terminal is the second class user terminal; When the forward emitting power of user terminal during more than or equal to power threshold A and maximum power threshold value, this user terminal is the first estate user terminal.
Fig. 3 is the schematic flow sheet of forward power overload control method in the embodiment of the invention.
With reference to Fig. 3, the forward power overload control method of the embodiment of the invention comprises the steps:
Step 101 is provided with forward power overload thresholding OverloadA, OverloadB, the OverloadC of each grade in the base station; User terminal power threshold UserThreshold_A, UserThreshold_B, UserThreshold_C; The maximum power thresholding MaxTxPower of user terminal bring to power.Wherein, OverloadA＜OverloadB＜OverloadC, and MaxTxPower＞UserThreshold_A＞UserThreshold_B＞UserThreshold_C.And, set up the corresponding relation between overload threshold and the power threshold, promptly set up the corresponding relation between user terminal grade and the overloaded base stations state grade.For example, OverloadA is corresponding with UserThreshold_A, OverloadB and UserThreshold_B is corresponding, OverloadC and UserThreshold_C are corresponding, just say that also the first estate of overload is corresponding with the first estate of user terminal, second grade of second grade of overload and user terminal is corresponding, the tertiary gradient of the tertiary gradient of overload and user terminal is corresponding, the fourth estate of the fourth estate of overload and user terminal is corresponding.
It should be noted that the overload threshold quantity of setting here and the quantity of power threshold equate that still, obviously, both quantity also can be unequal, can have when setting up corresponding relation so more flexibly and select.
For simplicity, might as well suppose that the base station is initially located in normal condition.
Step 102, the total transmitting power of forward direction that calculation base station is current, and judge whether the base station enters the first estate overload, be whether forward direction total transmitting power in base station rises above OverloadA, if, then execution in step 104 and subsequent step thereof, otherwise, execution in step 103 and subsequent step thereof.
Step 103, base station also are in normal condition, therefore, can not do any operation in this step, and power threshold that perhaps can all user terminals is set to maximum power thresholding MaxTxPower, remove the restriction to all user terminal lifting power.Then, return step 102, calculate once more and judge.
Step 104, this moment, the base station entered the first order overload higher than normal condition from normal condition, restriction lifting current power can also further limit the forward emitting power that current forward emitting power equals the user terminal of UserThreshold_A greater than the forward emitting power of the user terminal of UserThreshold_A.For simplicity, in the present embodiment, all limit the forward emitting power of current forward emitting power, but the present invention is not limited thereto more than or equal to the user terminal of UserThreshold_A.
Specifically, in this step, can by maximum power threshold setting current power with these user terminals, when needing their power of lifting, can not their forward emitting power of lifting owing to reached the maximum power thresholding, thus limited these user terminal lifting power.Can certainly realize by other modes, measures such as forbidding lifting power for example directly is set.
Step 105 further, can allow the forward emitting power of lifting current power less than the user terminal of UserThreshold_A.
For example, the power threshold of these user terminals is set to maximum power thresholding MaxTxPower, to remove the restriction to these user terminal lifting power.
Step 106, the total transmitting power of forward direction that calculation base station is current, and judge whether the base station enters the second grade overload, promptly, be whether forward direction total transmitting power in base station rises above OverloadB, if, then execution in step 107 and subsequent step thereof, otherwise, execution in step 102 and subsequent step thereof.
Step 107, this moment, the base station entered the second grade overload higher than the first estate overload from normal condition, and the current forward emitting power power of restriction lifting is more than or equal to the forward emitting power of the user terminal of UserThreshold_B.
Specifically, can be set to current power by the power threshold of these user terminals, when needing their power of lifting and since reached self power threshold and can not their forward emitting power of lifting, thereby limited these user terminal lifting power.Can certainly realize by other modes, measures such as forbidding lifting power for example directly is set.
Step 108 further, can allow the forward emitting power of lifting current power less than the user terminal of UserThreshold_B.
For example, the power threshold of these user terminals is set to maximum power thresholding MaxTxPower, to remove the restriction to these user terminal lifting power.
Step 109, the total transmitting power of forward direction that calculation base station is current, and judge whether the base station enters tertiary gradient overload, promptly, be whether forward direction total transmitting power in base station rises above OverloadC, if, then execution in step 110 and subsequent step thereof, otherwise, execution in step 106 and subsequent step thereof.
Step 110, this moment, the base station entered than the higher tertiary gradient overload of the second grade overload state from the second grade overload, and the current forward emitting power power of restriction lifting is more than or equal to the forward emitting power of the user terminal of UserThreshold_C.
Specifically, can be set to current power by the power threshold of these user terminals, when needing their power of lifting and since reached self power threshold and can not their forward emitting power of lifting, thereby limited these user terminal lifting power.Can certainly realize by other modes, measures such as forbidding lifting power for example directly is set.
Step 111 further, can allow the forward emitting power of lifting current power less than the user terminal of UserThreshold_C.
For example, the power threshold of these user terminals is set to maximum power thresholding MaxTxPower, to remove the restriction to these user terminal lifting power.
Step 112, the total transmitting power of forward direction that calculation base station is current, and judge whether the base station enters fourth estate overload, that is, promptly whether forward direction total transmitting power in base station rises above OverloadD, if, then execution in step 113, otherwise, execution in step 109 and subsequent step thereof.
Step 113, this moment, the base station entered the fourth estate overload higher than tertiary gradient overload from tertiary gradient overload, restriction lifting current forward emitting power power is more than or equal to the forward emitting power of 0 user terminal, that is to say the forward emitting power of all user terminals of restriction lifting.
Specifically, can be set to current power by the power threshold of these user terminals, when needing their power of lifting and since reached self power threshold and can not their forward emitting power of lifting, thereby limited these user terminal lifting power.Can certainly realize by other modes, measures such as forbidding lifting power for example directly is set.
Execution in step 112 and subsequent step thereof then.
In addition, in above-mentioned flow process as shown in Figure 3, after any one judgement and having carried out corresponding operating, stop the execution of this flow process, finish control forward power overload.
The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make corresponding change and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1. a forward power overload control method is characterized in that, a plurality of power threshold of user terminal and a plurality of overload threshold of base station are set, and sets up the corresponding relation between described power threshold and the overload threshold, and this method also comprises:
Judge whether forward direction total transmitting power in base station rises above an overload threshold, if then forbid the forward emitting power of lifting forward emitting power greater than the user terminal of the power threshold corresponding with described overload threshold.
2. method according to claim 1 is characterized in that, this method further comprises:
Rise when surpassing an overload threshold judging the total transmitting power of base station forward direction, forbid that the lifting forward emitting power equals the forward emitting power of the user terminal of the power threshold corresponding with described overload threshold.
3. method according to claim 1 and 2 is characterized in that, forbids that the step of the forward emitting power of lifting user terminal comprises:
With the forward emitting power threshold setting of described user terminal is the current forward emitting power value of this user terminal.
4. method according to claim 1 is characterized in that, this method further comprises:
Rise when surpassing an overload threshold judging the total transmitting power of base station forward direction, allow the lifting forward emitting power to equal and/or less than the forward emitting power of the user terminal of the power threshold corresponding with described overload threshold.
5. method according to claim 4 is characterized in that, allows the step of the forward emitting power of lifting user terminal to comprise:
With the forward emitting power threshold setting of described user terminal is the maximum power threshold value.
6. method according to claim 1 is characterized in that, this method further comprises:
When judging the total transmitting power of base station forward direction and drop to, remove forward emitting power is less than or equal to the restriction more than or equal to the user terminal lifting forward emitting power of this next power threshold of power threshold of the power threshold corresponding with described overload threshold and forward emitting power less than an overload threshold.
7. method according to claim 6 is characterized in that, the step of removing the restriction of user terminal forward emitting power comprises:
With the forward emitting power threshold setting of described user terminal is the maximum power threshold value.
8. according to claim 5 or 7 described methods, it is characterized in that this method further comprises the step that sets in advance described maximum power threshold value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101773473A CN101174860B (en) | 2007-11-14 | 2007-11-14 | Forward power overloads control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101773473A CN101174860B (en) | 2007-11-14 | 2007-11-14 | Forward power overloads control method |
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| CN101174860A CN101174860A (en) | 2008-05-07 |
| CN101174860B true CN101174860B (en) | 2011-05-11 |
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| CN2007101773473A Expired - Fee Related CN101174860B (en) | 2007-11-14 | 2007-11-14 | Forward power overloads control method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102301798B (en) * | 2009-01-22 | 2014-05-07 | 华为技术有限公司 | Method, System And Device For Enhancing The Uplink Coverage Capacity Of The User Equipment |
| CN101577933B (en) * | 2009-06-04 | 2011-12-07 | 中兴通讯股份有限公司 | Forward power overload control method for dynamically dividing user level and device thereof |
| CN101754325A (en) * | 2009-12-25 | 2010-06-23 | 中兴通讯股份有限公司 | Forward power overload control method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312975A (en) * | 1998-07-10 | 2001-09-12 | 摩托罗拉公司 | Method and system for allocating transmit power to subscriber units in a wireless communication system |
| CN1399435A (en) * | 2001-07-25 | 2003-02-26 | 深圳市中兴通讯股份有限公司 | Forward power overload controlling method in CDMA system |
| CN1700611A (en) * | 2004-05-17 | 2005-11-23 | 大唐移动通信设备有限公司 | Method for implementing downlink power control in mobile communication system having intelligent antenna |
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- 2007-11-14 CN CN2007101773473A patent/CN101174860B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312975A (en) * | 1998-07-10 | 2001-09-12 | 摩托罗拉公司 | Method and system for allocating transmit power to subscriber units in a wireless communication system |
| CN1399435A (en) * | 2001-07-25 | 2003-02-26 | 深圳市中兴通讯股份有限公司 | Forward power overload controlling method in CDMA system |
| CN1700611A (en) * | 2004-05-17 | 2005-11-23 | 大唐移动通信设备有限公司 | Method for implementing downlink power control in mobile communication system having intelligent antenna |
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