CN100421362C - Method for controlling transmission power in wireless communication system - Google Patents
Method for controlling transmission power in wireless communication system Download PDFInfo
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- CN100421362C CN100421362C CNB2005100087148A CN200510008714A CN100421362C CN 100421362 C CN100421362 C CN 100421362C CN B2005100087148 A CNB2005100087148 A CN B2005100087148A CN 200510008714 A CN200510008714 A CN 200510008714A CN 100421362 C CN100421362 C CN 100421362C
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004891 communication Methods 0.000 title claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 38
- 238000007906 compression Methods 0.000 claims abstract description 38
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
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Abstract
The present invention provides a method for controlling transmission power in a wireless communication system, which has the core that: in the compression channel period of an uplink compression mode sequence of a base station, an up link at a base station side generates downlink transmission power kept by the downlink transmission power, and downlink transmission power control is carried out by a down link at the base station side on the basis of the downlink transmission power generated by the up link. Under the condition that the down link at the base station side doesn't know the uplink compression mode sequence, the present invention can keep the downlink transmission power at the base station side stable, and avoid the phenomenon that the drop call of user equipment and the downlink congestion of the base station side are caused by the abnormal power control of the downlink transmission power at the base station side. In the compression channel period of an uplink compression mode of the base station, the present invention can keep the uplink transmission power of the user equipment stable, and avoid the phenomena of the reduction of base station capacity and the drop call of the user equipment; thereby, the purposes of the enhancements of network stabilization and network service quality are realized by the technical scheme provided by the present invention.
Description
Technical field
The present invention relates to the wireless communication technique field, be specifically related to the method for through-put power control in a kind of wireless communication system.
Background technology
In wireless communication system such as WCDMA (Wideband Code Division Multiple Access (WCDMA)) system, the design of TPC (through-put power control) is crucial.
When NodeB starts compact model, clearly stipulate in the agreement: during the GAP of compressed mode sequence (compression ditch), the up link of NodeB side does not need to produce uplink transmit power and downlink transmission power, and the through-put power of the down link of NodeB side should remain unchanged.
In actual applications, when the uplink and downlink compressed mode sequence that starts as NodeB is identical, because it is identical during the compression ditch of uplink and downlink compressed mode sequence, then the down link of NodeB side can be determined during the GAP of uplink compressed mode sequence, and can between the compression period of uplink compressed mode sequence, keep the through-put power of down link of NodeB side constant, and do not send uplink transmit power.
But, in the NodeB startup, the downlink compression mode sequence is not simultaneously, as shown in Figure 1, on when the downlink compression mode sequence all comprises pressing mold, downlink compression mode sequence difference, the uplink compressed mode sequence of having only as shown in Figure 2 comprises pressing mold again, on when the downlink compression mode sequence does not comprise pressing mold, downlink compression mode sequence difference, under normal frame transmission situation, the down link of NodeB side is not owing to know the uplink compressed mode sequence, so the downlink transmission power that down link still can produce according to the up link of base station side carries out descending power control, and the uplink transmit power that the up link of base station side is produced sends to UE (subscriber equipment), and UE carries out uplink transmit power control according to this uplink transmit power.If the down link of NodeB side does not receive the downlink transmission power that up link sends, generally can carry out downlink transmission power control according to the downlink transmission power of previous time slot.If the down link of NodeB side does not receive the uplink transmit power that up link sends, generally the uplink transmit power of previous time slot can be sent to UE.
Like this, when the uplink and downlink compressed mode sequence not simultaneously, during the GAP of uplink compressed mode sequence, the down link of NodeB side may carry out downlink transmission power control according to the downlink transmission power of previous time slot, if the downlink transmission power of previous time slot is a power per liter, then during the GAP of uplink compressed mode sequence, the transmitting power of the down link of NodeB side can constantly be raised, and may cause the downlink congestion of NodeB side; If the downlink transmission power of previous time slot is for falling power, then during the GAP of uplink compressed mode sequence, the transmitting power of the down link of NodeB side can constantly reduce, and may cause user's equipment downward asynchronous, thereby cause call drop.
Equally, when the uplink and downlink compressed mode sequence not simultaneously, during the GAP of uplink compressed mode sequence, the down link of NodeB side can send to UE according to the uplink transmit power of previous time slot, if the uplink transmit power of previous time slot is a power per liter, then during the GAP of uplink compressed mode sequence, can constantly require subscriber equipment to improve transmitting power, may cause that RTWP's (receive broadband gross power) is soaring unusually, increase is to the interference of other subscriber equipment, thereby, greatly reduce the capacity of NodeB; If the uplink transmit power of previous time slot is for falling power, then during the GAP of uplink compressed mode sequence, can constantly require subscriber equipment to reduce transmitting power, may cause the NodeB uplink loss, thereby cause call drop.
In sum, in the uplink and downlink compressed mode sequence of NodeB not simultaneously, there is certain randomness in the uplink transmit power of the downlink transmission power of NodeB side, UE side, make the downlink transmission power of base station and the uplink transmission power of subscriber equipment have very strong uncertainty, stability of network is poor, network service quality is low thereby make.
Summary of the invention
The objective of the invention is to, the method for through-put power control in a kind of wireless communication system is provided, control, thereby realized improving the purpose of network stabilization, raising network service quality with the unusual power of avoiding the base station down through-put power.
For achieving the above object, the method for through-put power control in a kind of wireless communication system provided by the invention comprises:
A, during the compression ditch of uplink compressed mode sequence, up link produces downlink transmission power, and described downlink transmission power remains unchanged;
B, the downlink transmission power that produces according to described up link carry out downlink transmission power control.
Comprise during the compression ditch of uplink compressed mode sequence among the described step a: during the compression ditch of the asynchronous uplink compressed mode sequence of uplink and downlink compressed mode sequence.
Described uplink and downlink compressed mode sequence is not all: all comprise the sequence difference of the uplink and downlink compact model of compact model, or have only the up sequence difference that comprises the uplink and downlink compact model of compact model.
Described step a also comprises:
Up link produces uplink transmit power according to power per liter and the predetermined alternating sequence that falls power.
Described method also comprises:
Down link is sent to subscriber equipment with described uplink transmit power;
Subscriber equipment carries out uplink transmit power control according to the described uplink transmit power that receives.
Described power per liter comprises with the predetermined alternating sequence that falls power: a power per liter and an alternating sequence that falls power.
Description by technique scheme can obviously be learnt, the present invention passes through during the compression ditch of the uplink compressed mode of base station, make base station side up-link wireless link produce the downlink transmission power of downlink transmission power for keeping, the down link that makes base station side is under the situation of not knowing the uplink compressed mode sequence, also can be during the compression ditch of uplink compressed mode sequence, make the down transmitting power of base station side keep stable, avoided the unusual power control phenomenon of base station down through-put power, base station side downlink congestion and the subscriber equipment call drop phenomenon of having avoided unusual power control to cause; The present invention passes through during the compression ditch of the uplink compressed mode of base station, make the up-link wireless link of base station side produce uplink transmit power, make the uplink transmission power of subscriber equipment keep stable, avoided that the base station capacity reduces, subscriber equipment disturbs other subscriber equipmenies and the call drop phenomenon of subscriber equipment; Thereby realized the raising network stabilization by technical scheme provided by the invention, improved the purpose of network service quality.
Description of drawings
Fig. 1 is a uplink and downlink compressed mode sequence schematic diagram 1;
Fig. 2 is a uplink and downlink compressed mode sequence schematic diagram 2;
Fig. 3 is the control method flow chart of through-put power in the wireless communication system of the present invention.
Embodiment
When the down link of base station side can't be learnt the uplink compressed mode sequence, when making the down link of base station side can't learn during the compression ditch of uplink compressed mode sequence, if the through-put power and this through-put power that make the up link of base station side produce down link are maintenance, then can effectively avoid the unusual power control of the downlink transmission power of base station side, thereby avoid the call drop phenomenon of the downlink congestion and the subscriber equipment of base station side.
Therefore, core of the present invention is: during the compression ditch of the uplink compressed mode sequence of base station, base station side up-link wireless link produces the downlink transmission power of downlink transmission power for keeping, and the downlink transmission power that the base station side down link produces according to described up-link wireless link carries out downlink transmission power control.
Based on core concept of the present invention technical scheme provided by the invention is further described below.
Can be specially during the compression ditch of the uplink compressed mode sequence of base station among the present invention: the uplink and downlink compressed mode sequence that all comprises pressing mold, and the uplink and downlink compressed mode sequence is not simultaneously, during the compression ditch of uplink compressed mode sequence, perhaps have only the uplink compressed mode sequence to comprise pressing mold, and the uplink and downlink compressed mode sequence is not simultaneously, during the compression ditch of uplink compressed mode sequence.
During the compression ditch of uplink compressed mode sequence, the present invention makes the up link of base station side produce downlink transmission power, and this downlink transmission power is for keeping, the down link of base station side is by obtaining the downlink transmission power that up link produces, and carry out downlink transmission power according to this downlink transmission power and control, can be so that the downlink transmission power of base station side down link keep stable during the compression ditch of uplink compressed mode sequence, thus avoided the transmitting power of base station side down link constantly to raise and the transmitting power of the down link of the downlink congestion phenomenon of the NodeB side that causes and NodeB side constantly reduction and the nonsynchronous call drop phenomenon of user's equipment downward that causes.
The present invention can also make the up link of base station side produce uplink transmit power during the compression ditch of uplink compressed mode sequence, and produces uplink transmit power according to power per liter and the predetermined alternating sequence that falls power.Above-mentioned power per liter comprises with the predetermined alternating sequence that falls power: the alternately suitable of power falls in power per liter and one, promptly 0,1,0,1.......The down link of base station side obtains the uplink transmit power that up link produces, and send it to corresponding user equipment, make subscriber equipment carry out uplink transmit power control according to power per liter that receives and the predetermined alternating sequence that falls power, like this, during the compression ditch of whole uplink compressed mode sequence, the power of the up link of user equipment side rises a power at most or falls power one time, makes the through-put power of the up link of user equipment side keep stable.The RTWP that causes thereby the transmitting power of having avoided the user equipment side up link is constantly raised is soaring unusually, the interference phenomenon of other subscriber equipment and subscriber equipment are constantly reduced transmitting power and the call drop phenomenon of the NodeB uplink loss that causes.
Control method below in conjunction with through-put power in 3 pairs of wireless communication systems of the present invention of accompanying drawing describes.
Among Fig. 3, in step 300, base station initiated uplink and downlink compressed mode sequence.
To step 310, judge whether the uplink compressed mode sequence is identical with the downlink compression mode sequence, if it is identical, to step 311, withdraw from power delivery control method of the present invention, adopt additive method during the compression ditch of uplink compressed mode sequence, base station side down link, user equipment side up link to be carried out power delivery control, as regulation according to agreement, the base station side up link does not produce the uplink and downlink through-put power, and the down link of base station side keeps its through-put power not change etc.
In step 310, if uplink compressed mode sequence and downlink compression mode sequence are inequality, to step 320, continue to judge whether the base station is in during the uplink compressed mode sequence, if determine that the base station is not in during the uplink compressed mode sequence, to step 311, withdraw from power delivery control method of the present invention.
In step 320, if determine that the base station is in during the uplink compressed mode sequence, to step 330, judge whether to be in during the compression ditch of uplink compressed mode sequence, if be not in during the compression ditch of uplink compressed mode sequence, continue to judge whether to be in during the compression ditch of uplink compressed mode sequence, during determining to be in the compression ditch of uplink compressed mode sequence, to step 340, the up link of base station side produces uplink transmit power according to a power per liter and an alternating sequence that falls power, simultaneously, the up link of base station side produces the downlink transmission power of downlink transmission power for keeping.
To step 350, the down link of base station side obtains the uplink and downlink through-put power of the up link generation of base station side, and carry out downlink transmission power according to the downlink transmission power that obtains and control, simultaneously, uplink transmit power is sent to corresponding subscriber equipment, makes subscriber equipment carry out uplink transmit power control according to the uplink transmit power that receives.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wishes that the claim of present specification comprises these distortion and variation.
Claims (6)
1. the method for through-put power control in the wireless communication system is characterized in that, comprising:
A, during the compression ditch of uplink compressed mode sequence, up link produces downlink transmission power, and described downlink transmission power remains unchanged;
B, the downlink transmission power that produces according to described up link carry out downlink transmission power control.
2. the method for through-put power control in a kind of wireless communication system as claimed in claim 1, it is characterized in that, comprise during the compression ditch of uplink compressed mode sequence among the described step a: during the compression ditch of the asynchronous uplink compressed mode sequence of uplink and downlink compressed mode sequence.
3. the method for through-put power control in a kind of wireless communication system as claimed in claim 2, it is characterized in that, described uplink and downlink compressed mode sequence is not all: all comprise the sequence difference of the uplink and downlink compact model of compact model, or have only the up sequence difference that comprises the uplink and downlink compact model of compact model.
4. the method for through-put power control in a kind of wireless communication system as claimed in claim 1 is characterized in that described step a also comprises:
Up link produces uplink transmit power according to power per liter and the predetermined alternating sequence that falls power.
5. the method for through-put power control in a kind of wireless communication system as claimed in claim 4 is characterized in that described method also comprises:
Down link is sent to subscriber equipment with described uplink transmit power;
Subscriber equipment carries out uplink transmit power control according to the described uplink transmit power that receives.
6. the method for through-put power control in a kind of wireless communication system of stating as claim 4 or 5 is characterized in that, described power per liter comprises with the predetermined alternating sequence that falls power: a power per liter and an alternating sequence that falls power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100087148A CN100421362C (en) | 2005-02-24 | 2005-02-24 | Method for controlling transmission power in wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100087148A CN100421362C (en) | 2005-02-24 | 2005-02-24 | Method for controlling transmission power in wireless communication system |
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| Publication Number | Publication Date |
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| CN1825774A CN1825774A (en) | 2006-08-30 |
| CN100421362C true CN100421362C (en) | 2008-09-24 |
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| CNB2005100087148A Active CN100421362C (en) | 2005-02-24 | 2005-02-24 | Method for controlling transmission power in wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101247341B (en) * | 2008-03-12 | 2011-08-10 | 中兴通讯股份有限公司 | Flow control group system and method for controlling flux balance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367956A (en) * | 1999-04-16 | 2002-09-04 | 艾利森电话股份有限公司 | Power setting in CDMA systems employing discontinuous transmission |
| CN1398069A (en) * | 2001-07-18 | 2003-02-19 | 华为技术有限公司 | Power control method in CDMA communication system |
| CN1399426A (en) * | 2001-07-20 | 2003-02-26 | 华为技术有限公司 | Regulation method of power-controlling time interval set in compression mode |
| US20030072279A1 (en) * | 2001-10-15 | 2003-04-17 | Nokia Corpration | Power control during compressed mode |
| DE69919747T2 (en) * | 1999-07-13 | 2005-01-27 | Alcatel | A method of enhancing the performance of a mobile radio communication system using a power control algorithm |
-
2005
- 2005-02-24 CN CNB2005100087148A patent/CN100421362C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367956A (en) * | 1999-04-16 | 2002-09-04 | 艾利森电话股份有限公司 | Power setting in CDMA systems employing discontinuous transmission |
| DE69919747T2 (en) * | 1999-07-13 | 2005-01-27 | Alcatel | A method of enhancing the performance of a mobile radio communication system using a power control algorithm |
| CN1398069A (en) * | 2001-07-18 | 2003-02-19 | 华为技术有限公司 | Power control method in CDMA communication system |
| CN1399426A (en) * | 2001-07-20 | 2003-02-26 | 华为技术有限公司 | Regulation method of power-controlling time interval set in compression mode |
| US20030072279A1 (en) * | 2001-10-15 | 2003-04-17 | Nokia Corpration | Power control during compressed mode |
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| CN1825774A (en) | 2006-08-30 |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: xFusion Digital Technologies Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |