CN101651476B - Method for limiting transmitted power of terminal and wireless access equipment - Google Patents
Method for limiting transmitted power of terminal and wireless access equipment Download PDFInfo
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- CN101651476B CN101651476B CN200810142399.1A CN200810142399A CN101651476B CN 101651476 B CN101651476 B CN 101651476B CN 200810142399 A CN200810142399 A CN 200810142399A CN 101651476 B CN101651476 B CN 101651476B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
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- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method for limiting the transmitted power of a terminal, and wireless access equipment. The method for limiting the transmitted power of the terminal comprises the following steps of: acquiring a transmitted power value of the wireless access equipment; acquiring a downlink interference value in a coverage area of the wireless access equipment; determining a limited transmitted power value of the terminal according to the transmitted power value of the wireless access equipment and the downlink interference value; and controlling the transmitted power of the terminal to be not more than the limited transmitted power value of the terminal. The method limits the transmitted power of the terminal according to the transmitted power value of the wireless access equipment and the downlink interference intensity in the coverage area of the wireless access equipment to basically balance uplink coverage and downlink coverage and reduce the uplink interference of the terminal to other adjacent access equipment.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and radio reception device of limiting transmitted power of terminal.
Background technology
The wireless network radio reception device is exactly a kind of typical following radio reception device form gradually to miniaturization, flattening future development such as the Femtocell class radio reception device that is applicable to family or enterprise customer.The Femtocell radio reception device adopts the small-power emission, and the zonule of satisfying family or office scenarios covers, and its descending coverage is far smaller than grand radio reception device.But because Femtocell network and outdoor grand network use unified terminal, cause the transmitting power of the terminal in the Femtocell coverage too rich, cause the up-downgoing of Femtocell network to cover uneven, up covering is greater than descending covering, and the transmitting power of Femtocell terminal is excessive may to cause uplink interference to outdoor grand network or adjacent Femtocell radio reception device.For above-mentioned technical problem, prior art there is no relevant solution.
Summary of the invention
Embodiments of the invention provide a kind of method and radio reception device of limiting transmitted power of terminal, by the restriction to terminal transmit power, have reduced the uplink interference that terminal causes other neighboring access equipment.
Embodiments of the invention provide a kind of method of limiting transmitted power of terminal, comprising:
Obtain the transmission power level of radio reception device;
Obtain the descending interference value in the radio reception device overlay area;
The limit transmit power value of determining terminal according to transmission power level and the described descending interference value of described radio reception device;
The transmitting power of control terminal is no more than the limit transmit power value of described terminal.
Embodiments of the invention provide a kind of radio reception device, comprising:
The transmission power level acquisition module is for the transmission power level that obtains radio reception device;
Descending interference value acquisition module is used for obtaining the descending interference value in the radio reception device overlay area;
Limit transmit power value acquisition module, be used for the descending interference value in the transmission power level of the described radio reception device that obtains according to described transmission power level acquisition module and the described radio reception device overlay area that described descending interference value acquisition module obtains, determine the limit transmit power value of terminal;
The terminal transmit power control module, the transmitting power that is used for control terminal is no more than the limit transmit power value of described terminal.
Embodiments of the invention come limiting transmitted power of terminal according to the descending interference strength in radio reception device transmitting power and the radio reception device institute overlay area, make the basic and descending covering balance of up covering, reduced the uplink interference that terminal causes other neighboring access equipment.
Description of drawings
Fig. 1 is in the embodiment of the invention one, a kind of schematic diagram of method of limiting transmitted power of terminal;
Fig. 2 is in the embodiment of the invention two, a kind of structural representation of radio reception device;
Fig. 3 is in the embodiment of the invention two, the structural representation of limit transmit power value acquisition module;
Fig. 4 is in the embodiment of the invention two, the another kind of structural representation of limit transmit power value acquisition module;
Fig. 5 is in the embodiment of the invention two, the structural representation of terminal transmit power control module.
Embodiment
Embodiments of the invention provide a kind of method and radio reception device of limiting transmitted power of terminal, come limiting transmitted power of terminal according to the descending interference strength in radio reception device transmitting power and the radio reception device institute overlay area, make the basic and descending covering balance of up covering, reduced the uplink interference that terminal causes other neighboring access equipment.For making technical scheme of the present invention and advantage clearer, below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Embodiments of the invention one relate to a kind of method of limiting transmitted power of terminal, as shown in Figure 1, comprising:
S101: the transmission power level that obtains radio reception device;
Wherein, for the radio reception device under UMTS, the cdma system, specifically can obtain the pilot transmit power value, transmission power level as radio reception device, for the radio reception device under the gsm system, then can obtain by measuring carrier frequency power the transmission power level of radio reception device.
S102: obtain the descending interference value in the radio reception device overlay area;
Can be used for detecting the descending interference value in the radio reception device lid zone by integrated downstream signal receiver in the middle of radio reception device, certain descending interference value also can draw by the measurement data of terminal to report to radio reception device.
S103: the limit transmit power value of determining terminal according to transmission power level and the described descending interference value of described radio reception device;
S104: the transmitting power of limiting terminal is no more than the limit transmit power value of described terminal.Specifically can issue the Power Limitation instruction of the limit transmit power value that carries terminal to terminal by signaling, so that the transmitting power of terminal is no more than the limit transmit power value of described terminal.
The limit transmit power value of step S103 confirms that process specifically can comprise:
S1031: the transmission power level according to described radio reception device obtains the first limit transmit power value; Usually the transmitting power of radio reception device is larger, and its descending coverage is larger, and the radio reception device transmitting power is less, and descending coverage is less; And in order to keep the balance of up covering and descending covering, descending covering is larger, terminal transmit power restriction looser (the limit transmit power value that is terminal is larger); Descending covering is less, terminal transmit power restriction stricter (the limit transmit power value that is terminal is less), this shows, the transmitting power of radio reception device becomes the monotonically increasing relation with the limit transmit power value of terminal, be that the radio reception device transmission power level is lower, then the limit transmit power value of terminal is lower; The radio reception device transmission power level is higher, and then the limit transmit power value of terminal is larger.Therefore can add or deduct a default bias A by the transmitting power with the base station, or draw the limit transmit power value of terminal by a monotonically increasing function after, direct execution in step S104.Consider that descending interference value is influential to the limit transmit power value of terminal equally, the limit transmit power value that also this step can be obtained is as a process values, i.e. the first limit transmit power value.
S1032: obtain the second limit transmit power value according to described descending interference value; For radio reception device, descending interference is larger, and descending covering is less; Descending interference is less, and descending covering is larger.In order to keep the balance of up covering and descending covering, descending covering is larger, terminal transmit power restriction looser (the limit transmit power value that is terminal is larger); Descending covering is less, terminal transmit power restriction stricter (the limit transmit power value that is terminal is less), this shows, descending interference value in the radio reception device overlay area becomes the relation of monotone decreasing with the limit transmit power value of terminal, be that descending interference value in the radio reception device overlay area is stronger, the limit transmit power value of terminal is lower; Descending interference value in the radio reception device overlay area is more weak, and the limit transmit power value of terminal is larger.Therefore can be by deducting described descending interference value with a default bias B, or after the monotonic decreasing function by described descending interference value draws the limit transmit power value of terminal, direct execution in step S104.The transmission power level of considering radio reception device is influential to the limit transmit power value of terminal equally, so the limit transmit power value that also this step can be obtained is as a process values, i.e. and the second limit transmit power value.
S1033: choose the limit transmit power value that a less value in described the first limit transmit power value and described the second limit transmit power value is defined as terminal,
Or choose described the first limit transmit power value and the second limit transmit power and be worth the limit transmit power value that a value in the formed interval is defined as terminal.
Specifically can obtain as follows the first limit transmit power value in the S1031 step:
S10311: the transmission power level according to described radio reception device deducts the poor of default radio reception device reference transmit power value, obtains radio reception device transmitting power increment;
S10312: according to the reference limit transmit power value of described radio reception device transmitting power increment and terminal and, obtain described the first limit transmit power value;
The reference limit transmit power value of the transmission power level of first limit transmit power value=radio reception device-radio reception device reference transmit power value+terminal, (the reference limit transmit power value of terminal-radio reception device reference transmit power value) is equivalent to above said default bias A; The expression formula that also can find out simultaneously above-mentioned the first limit transmit power value is the monotonically increasing function take the transmission power level of radio reception device as variable.
Specifically can obtain as follows the second limit transmit power value in the S1032 step:
S10321: deduct the poor of described descending interference value according to the default descending interference value of reference, obtain descending interference value increment;
S10322: according to the reference limit transmit power value of described descending interference value increment and terminal and, obtain described the second limit transmit power value.
The reference restriction emission merit-descending interference value rate value of the second limit transmit power value=descending interference value+terminal of reference, (with reference to the reference limit transmit power value of descending interference value+terminal) is equivalent to above said default bias B; The expression formula that also can find out simultaneously above-mentioned the second limit transmit power value is the monotonic decreasing function take descending interference value as variable.
Above-mentioned radio reception device reference transmit power value, has following relation with reference to the reference limit transmit power value of descending interference value, terminal: when the transmitting power of radio reception device is the reference transmit power value, when the descending interference value in its coverage is the descending interference value of reference, the transmitting power of terminal is during with reference to limit transmit power, can reach the balance of up covering and descending covering.This class value can be by experiment or emulation obtain, and be stored in the radio reception device as preset value.
The limit transmit power value of step S103 confirms that process specifically can also comprise:
S103A: the transmission power level according to described radio reception device deducts the poor of default radio reception device reference transmit power value, obtains radio reception device transmitting power increment;
S103B: deduct the poor of described descending interference value according to the default descending interference value of reference, obtain descending interference value increment;
S103C: according to the reference limit transmit power value of terminal and described radio reception device transmitting power increment and described descending interference value increment and, determine the limit transmit power value of described terminal.
The limit transmit power value of step S103 is confirmed process, can also directly directly bring transmission power level, descending interference value into function calculation, obtains the limit transmit power value.
The method of embodiments of the invention one is come limiting transmitted power of terminal according to the descending interference strength in radio reception device transmitting power and the radio reception device institute overlay area, make the basic and descending covering balance of up covering, reduced the uplink interference that terminal causes other neighboring access equipment.
Embodiments of the invention two relate to a kind of radio reception device, as shown in Figure 2, comprising:
Transmission power level acquisition module 210 is for the transmission power level that obtains radio reception device;
Descending interference value acquisition module 220 is used for obtaining the descending interference value in the radio reception device overlay area;
Limit transmit power value acquisition module 230, be used for the descending interference value in the transmission power level of the described radio reception device that obtains according to described transmission power level acquisition module and the described radio reception device overlay area that described descending interference value acquisition module obtains, determine the limit transmit power value of terminal;
Terminal transmit power control module 240, the transmitting power that is used for control terminal is no more than the limit transmit power value of described terminal.
As shown in Figure 3, limit transmit power value acquisition module 230 can also comprise:
The first limit transmit power value acquisition module 231, the transmission power level that is used for the described radio reception device that obtains according to described transmission power level acquisition module obtains the first limit transmit power value; Usually the transmitting power of radio reception device is larger, and its descending coverage is larger, and the radio reception device transmitting power is less, and descending coverage is less; And in order to keep the balance of up covering and descending covering, descending covering is larger, terminal transmit power restriction looser (the limit transmit power value that is terminal is larger); Descending covering is less, terminal transmit power restriction stricter (the limit transmit power value that is terminal is less), this shows, the transmitting power of radio reception device becomes the monotonically increasing relation with the limit transmit power value of terminal, be that the radio reception device transmission power level is lower, then the limit transmit power value of terminal is lower; The radio reception device transmission power level is higher, and then the limit transmit power value of terminal is larger.Therefore can add or deduct a default bias A by the transmitting power with the base station, obtain the first limit transmit power value.The reference limit transmit power value of the transmission power level of concrete first limit transmit power value=radio reception device-radio reception device reference transmit power value+terminal, (the reference limit transmit power value of terminal-radio reception device reference transmit power value) is equivalent to above said default bias A; The expression formula that also can find out simultaneously above-mentioned the first limit transmit power value is the monotonically increasing function take the transmission power level of radio reception device as variable.
The second limit transmit power value acquisition module 232, the descending interference value in the described radio reception device overlay area that is used for obtaining according to described descending interference value acquisition module obtains the second limit transmit power value; For radio reception device, descending interference is larger, and descending covering is less; Descending interference is less, and descending covering is larger.In order to keep the balance of up covering and descending covering, descending covering is larger, terminal transmit power restriction looser (the limit transmit power value that is terminal is larger); Descending covering is less, terminal transmit power restriction stricter (the limit transmit power value that is terminal is less), this shows, descending interference value in the radio reception device overlay area becomes the relation of monotone decreasing with the limit transmit power value of terminal, be that descending interference value in the radio reception device overlay area is stronger, the limit transmit power value of terminal is lower; Descending interference value in the radio reception device overlay area is more weak, and the limit transmit power value of terminal is larger.Therefore can deduct described descending interference value by presetting bias B with one, or after the monotonic decreasing function by described descending interference value draws the limit transmit power value of terminal, obtain the second limit transmit power value.The reference limit transmit power value of the second limit transmit power value=descending interference value+terminal of reference-descending interference value rate value, (with reference to the reference restriction emission merit of descending interference value+terminal) is equivalent to above said default bias B; The expression formula that also can find out simultaneously above-mentioned the second limit transmit power value is the monotonic decreasing function take descending interference value as variable
The limit transmit power value is chosen module 233, is used for choosing the limit transmit power value that described the first limit transmit power value and a less value of described the second limit transmit power value are defined as terminal,
Or choose described the first limit transmit power value and the second limit transmit power and be worth the limit transmit power value that a value in the formed interval is defined as terminal.
As shown in Figure 4, another execution mode of limit transmit power value acquisition module 230 comprises:
Transmitting power increment acquisition module 235, the transmission power level that is used for the described radio reception device that obtains according to described transmission power level acquisition module deducts radio reception device reference transmit power value poor of memory module storage, obtains radio reception device transmitting power increment;
Interference value increment acquisition module 236 is used for the descending interference value of reference according to the memory module storage and deducts the poor of descending interference value in the described radio reception device overlay area that described descending interference value acquisition module obtains, obtains descending interference value increment;
Limit transmit power value determination module 237, be used for according to the reference limit transmit power value of the terminal of memory module storage and described radio reception device transmitting power increment and described descending interference value increment with, determine the limit transmit power value of described terminal.
As shown in Figure 5, terminal transmit power control module 240 specifically comprises:
Signaling sending module 242 sends described Power Limitation instruction to terminal, so that the transmitting power of terminal is no more than the limit transmit power value of described terminal.
The radio reception device of embodiments of the invention two can limit according to the descending interference strength of self transmitting power and self overlay area the transmitting power of institute's service terminal, make the basic and descending covering balance of up covering, the uplink interference that the terminal that the minimizing radio reception device is served causes other neighboring access equipment.
Transmission power level in above-described embodiment, descending interference value, limit transmit power value all are level values, and namely unit is dBm.
Radio reception device in the middle of above-described embodiment can be the radio reception devices such as base station, femto cell, AP, Pico or Femtocell under UMTS, GSM, CDMA, LTE or the Wimax network formats.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. the method for a limiting transmitted power of terminal is characterized in that, comprising:
Obtain the transmission power level of radio reception device;
Obtain the descending interference value in the radio reception device overlay area;
The limit transmit power value of determining terminal according to transmission power level and the described descending interference value of described radio reception device;
The transmitting power of control terminal is no more than the limit transmit power value of described terminal.
2. method according to claim 1 is characterized in that, the described limit transmit power value of determining terminal according to transmission power level and the described descending interference value of described radio reception device specifically comprises:
Transmission power level according to described radio reception device obtains the first limit transmit power value;
Obtain the second limit transmit power value according to described descending interference value;
Choose the limit transmit power value that a less value in described the first limit transmit power value and described the second limit transmit power value is defined as terminal,
Or choose described the first limit transmit power value and the second limit transmit power and be worth the limit transmit power value that a value in the formed interval is defined as terminal.
3. method according to claim 2 is characterized in that, described transmission power level according to described radio reception device obtains the first limit transmit power value, specifically comprises:
Transmission power level according to described radio reception device deducts the poor of default radio reception device reference transmit power value, obtains radio reception device transmitting power increment;
According to the reference limit transmit power value of described radio reception device transmitting power increment and terminal and, obtain described the first limit transmit power value.
4. method according to claim 2 is characterized in that, describedly obtains the second limit transmit power value according to described descending interference value, specifically comprises:
Deduct the poor of described descending interference value according to the default descending interference value of reference, obtain descending interference value increment;
According to the reference limit transmit power value of described descending interference value increment and terminal and, obtain described the second limit transmit power value.
5. method according to claim 1 is characterized in that, the described limit transmit power value of determining terminal according to transmission power level and the described descending interference value of described radio reception device specifically comprises:
Transmission power level according to described radio reception device deducts the poor of default radio reception device reference transmit power value, obtains radio reception device transmitting power increment;
Deduct the poor of described descending interference value according to the default descending interference value of reference, obtain descending interference value increment;
According to the reference limit transmit power value of terminal and described radio reception device transmitting power increment and described descending interference value increment and, determine the limit transmit power value of described terminal.
6. according to claim 1 to 5 each described methods, it is characterized in that the transmitting power of described control terminal is no more than the limit transmit power value of described terminal, specifically comprises:
Issue the Power Limitation instruction of the limit transmit power value that carries terminal by signaling to terminal, so that the transmitting power of terminal is no more than the limit transmit power value of described terminal.
7. a radio reception device is characterized in that, comprising:
The transmission power level acquisition module is for the transmission power level that obtains radio reception device;
Descending interference value acquisition module is used for obtaining the descending interference value in the radio reception device overlay area;
Limit transmit power value acquisition module, be used for the descending interference value in the transmission power level of the described radio reception device that obtains according to described transmission power level acquisition module and the described radio reception device overlay area that described descending interference value acquisition module obtains, determine the limit transmit power value of terminal;
The terminal transmit power control module, the transmitting power that is used for control terminal is no more than the limit transmit power value of described terminal.
8. equipment according to claim 7 is characterized in that, described limit transmit power value acquisition module also comprises:
The first limit transmit power value acquisition module, the transmission power level that is used for the described radio reception device that obtains according to described transmission power level acquisition module obtains the first limit transmit power value;
The second limit transmit power value acquisition module, the descending interference value in the described radio reception device overlay area that is used for obtaining according to described descending interference value acquisition module obtains the second limit transmit power value;
The limit transmit power value is chosen module, is used for choosing the limit transmit power value that described the first limit transmit power value and a less value of described the second limit transmit power value are defined as terminal,
Or choose described the first limit transmit power value and the second limit transmit power and be worth the limit transmit power value that a value in the formed interval is defined as terminal.
9. equipment according to claim 7 is characterized in that, described limit transmit power value acquisition module also comprises:
Memory module is for the reference limit transmit power value of pre-stored radio reception device reference transmit power value, the descending interference value of reference, terminal;
Transmitting power increment acquisition module, the transmission power level that is used for the described radio reception device that obtains according to described transmission power level acquisition module deducts radio reception device reference transmit power value poor of memory module storage, obtains radio reception device transmitting power increment;
Interference value increment acquisition module is used for the descending interference value of reference according to the memory module storage and deducts the poor of descending interference value in the described radio reception device overlay area that described descending interference value acquisition module obtains, obtains descending interference value increment;
Limit transmit power value determination module, be used for according to the reference limit transmit power value of the terminal of memory module storage and described radio reception device transmitting power increment and described descending interference value increment with, determine the limit transmit power value of described terminal.
10. according to claim 7 to 9 each described equipment, it is characterized in that described terminal transmit power control module specifically comprises:
The signaling generation module, for the limit transmit power value of the terminal of obtaining according to limit transmit power value acquisition module, generating power restriction instruction;
Signaling sending module sends described Power Limitation instruction to terminal, so that the transmitting power of terminal is no more than the limit transmit power value of described terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810142399.1A CN101651476B (en) | 2008-08-14 | 2008-08-14 | Method for limiting transmitted power of terminal and wireless access equipment |
| PCT/CN2009/070897 WO2010017707A1 (en) | 2008-08-14 | 2009-03-19 | Method and radio access apparatus for limiting transmitting power of terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810142399.1A CN101651476B (en) | 2008-08-14 | 2008-08-14 | Method for limiting transmitted power of terminal and wireless access equipment |
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| CN101651476A CN101651476A (en) | 2010-02-17 |
| CN101651476B true CN101651476B (en) | 2013-02-27 |
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| CN106162519B (en) | 2015-04-24 | 2020-02-04 | 北京智谷睿拓技术服务有限公司 | Mobile terminal information sending method and sending device |
| CN107770857A (en) * | 2017-10-11 | 2018-03-06 | 惠州Tcl移动通信有限公司 | Mobile terminal and radiofrequency signal adjustment processing method and storage medium |
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| JP2993554B2 (en) * | 1994-05-12 | 1999-12-20 | エヌ・ティ・ティ移動通信網株式会社 | Transmission power control method and communication device using the transmission power control method |
| US8023955B2 (en) * | 2005-08-22 | 2011-09-20 | Sony Corporation | Uplink resource allocation to control intercell interference in a wireless communication system |
| CN100407592C (en) * | 2005-12-05 | 2008-07-30 | 华为技术有限公司 | Back interference conquering method and system |
| US8712460B2 (en) * | 2006-02-17 | 2014-04-29 | Alcatel Lucent | Methods of reverse link power control |
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| CN101651476A (en) | 2010-02-17 |
| WO2010017707A1 (en) | 2010-02-18 |
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