CN102404830B - Method for determining uplink desired received power and downlink open loop transmitted power - Google Patents
Method for determining uplink desired received power and downlink open loop transmitted power Download PDFInfo
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- CN102404830B CN102404830B CN201010281388.9A CN201010281388A CN102404830B CN 102404830 B CN102404830 B CN 102404830B CN 201010281388 A CN201010281388 A CN 201010281388A CN 102404830 B CN102404830 B CN 102404830B
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- descending
- gain
- open loop
- interference
- distributed areas
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- Y02B60/50—
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method for determining uplink desired received power and downlink open loop transmitted power, which calculates uplink gains and downlink gains in all distribution areas, and collocates uplink open loop power and downlink open loop power respectively by using the calculation results, so that the uplink gains and the downlink gains in all distribution small areas can reach a balance, and accordingly the problems of excessive low or excessive high received power in partial distribution areas can be effectively avoided.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to the defining method of up expectation received power in distributing cell and descending open loop transmit power.
Background technology
In the mobile communication system of distributing cell, each community is according to up expectation received power=initial signal interference ratio+interference+interference margins, calculate up expectation received power, wherein, initial signal interference ratio and interference margins are the constant parameter of system according to business configuration, and described interference is base station by measuring other communities that upward signal obtains to the uplink interference of this community; According to descending open loop transmit power=initial signal interference ratio+path loss+interference+interference margins, calculate descending open loop transmit power, wherein, initial signal interference ratio and interference margins are the constant parameter of system according to business configuration, described interference and path loss are measured by subscriber equipment (UE) and are obtained, and described interference is the interference be subject in the downstream direction that UE measures.
In the mobile communication system of distributing cell, a distributing cell comprises multiple distributed areas, for each distributed areas in same community, base station uses identical transmitting power (i.e. descending open loop transmit power), and each UE uses identical transmitting power (i.e. up expectation received power).Due in actual applications, the antenna number that each distributed areas configure, antenna type and antenna gain are normally not identical, like this, when each distributed areas configuration equal transmit power varying number antenna, antenna type and antenna gain, the received power of each distributed areas can be different, obviously this will cause the received power of subregion too low or too high, thus causes demodulation failure or interference to increase.
As can be seen here, the above-mentioned base station for each distributed areas or UE configure the method for unified transmitting power, are not suitable in distributing cell.Not yet propose at present to be a kind ofly applicable to the up expectation received power of distributing cell and the defining method of descending open loop transmit power.
Summary of the invention
In view of this, main purpose of the present invention is the defining method providing a kind of up expectation received power and descending open loop transmit power, and the method is applicable in distributing cell.
In order to achieve the above object, the technical scheme that the present invention proposes is:
A defining method for up expectation received power and descending open loop transmit power, the method comprises the following steps:
When community is set up, network side estimates the up gain E of Zhong Ge distributed areas, distributing cell respectively
uwith descending gain E
d;
For each described distributed areas, network side measures the uplink interference I of these distributed areas
u; Its descending interference I be subject to measured by each subscriber equipment (UE) in described distributing cell
dwith descending path loss L
d, and report network side;
Network side is according to described E
uand I
umeasurement result, according to P
u=SIR
u+ I
u+ λ
u+ E
u, calculate the up expectation received power P of each described distributed areas
u, wherein, SIR
ufor the up initial signal interference ratio preset, λ
ufor the uplink interference surplus preset; According to the described E measured
d, I
dand L
d, according to P
d=SIR
d+ I
d+ λ
d+ L
d+ E
d, calculate the descending open loop transmit power P corresponding with each described UE respectively
d, wherein, SIR
dfor the down initial signal interference ratio preset, λ
dfor the descending interference margins preset, E
dfor the descending gain of distributed areas, described UE place.
In sum, the defining method of the up expectation received power that the present invention proposes and descending open loop transmit power, by estimating the up-downgoing gain of each distributed areas respectively, described estimation result is utilized to configure the up-downgoing open loop power of each distributed areas respectively, make the up-downgoing gain of each distributing cell reach balance, thus avoid the problem that occurs that the received power of part distributed areas is too low or too high.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Core concept of the present invention is: consider that the up-downgoing antenna gain of Zhong Ge distributed areas, community, distributed area is different, the present invention is by the up-downgoing gain by utilizing each distributed areas, independently the up-downgoing open loop power (i.e. up expectation received power and descending open loop transmit power) of each distributed areas is calculated and configured, the up-downgoing gain of Zhong Ge distributed areas, community is made to reach balance, namely the transmitting power of each distributed areas can meet demodulation requirement, does not cause extra interference again.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.As shown in Figure 1, this embodiment comprises:
Step 101, when community is set up, network side estimates the up gain E of Zhong Ge distributed areas, distributing cell respectively
uwith descending gain E
d.
Here, consider in practical application, the up gain E of each distributed areas
uwith descending gain E
dusually can not be identical, therefore in this step, for the up gain E of each distributed areas
uwith descending gain E
d, will estimate respectively, in subsequent step, then utilize this estimation result, carry out the calculating of the up-downgoing open loop power of each distributed areas independently, thus make the transmitting power of each distributed areas can meet demodulation requirement, not cause extra interference again.
The up gain E of each distributed areas
uwith descending gain E
dcan be estimated by the base station of network side, concrete evaluation method can adopt existing method to realize, and does not repeat them here.
Step 102, for each described distributed areas, network side measures the uplink interference I of these distributed areas
u; Each UE in described distributing cell measures its descending interference I be subject to
dwith descending path loss L
d, and report network side.
Here, described uplink interference I
umeasurement can be realized by base station, in addition, I
u, I
dand L
dexisting method specifically can be adopted to realize, do not repeat them here.
Step 103, network side are according to described E
uand I
umeasurement result, according to P
u=SIR
u+ I
u+ λ
u+ E
u, calculate the up expectation received power P of each described distributed areas respectively
u, wherein, SIR
ufor the up initial signal interference ratio preset, λ
ufor the uplink interference surplus preset; According to the described E measured
d, I
dand L
d, according to P
d=SIR
d+ I
d+ λ
d+ L
d+ E
d, calculate the descending open loop transmit power P corresponding with each described UE respectively
d, wherein, SIR
dfor the down initial signal interference ratio preset, λ
dfor the descending interference margins preset, E
dfor the descending gain of distributed areas, described UE place.
In this step, by considering the difference of the up-downgoing gain of each distributed areas, according to the up-downgoing gain of each distributed areas, the open loop transmit power of the independent up-downgoing calculated on each distributed areas, to make the up-downgoing gain of each distributed areas in distributing cell reach balance, thus avoid the problem that adopts the received power of the subregion occurred during identical transmitting power too low or too high to each distributed areas.
Here, SIR
u, λ
u, SIR
d, λ
dexisting method can be adopted to arrange by those skilled in the art, not repeat them here.
Described up expectation received power P
uwith described descending open loop transmit power P
dcan calculate in base station side and also can calculate in RNC side.
When calculating described P in RNC side
utime, described base station needs described up gain E
uwith described uplink interference I
usend to RNC.
When calculating described P in RNC side
dtime, described UE needs described descending interference I
dwith descending path loss L
dsend to described base station.
When calculating described P in RNC side
dtime, described base station needs described descending gain E
dsend to RNC, described UE then needs described descending interference I
dwith descending path loss L
dsend to described RNC.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a defining method for up expectation received power and descending open loop transmit power, is characterized in that, the method comprises the following steps:
When community is set up, network side estimates the up gain E of Zhong Ge distributed areas, distributing cell respectively
uwith descending gain E
d;
For each described distributed areas, network side measures the uplink interference I of these distributed areas
u; Its descending interference I be subject to measured by each subscriber equipment (UE) in described distributing cell
dwith descending path loss L
d, and report network side;
Network side is according to described E
uand I
umeasurement result, according to P
u=SIR
u+ I
u+ λ
u+ E
u, calculate the up expectation received power P of each described distributed areas respectively
u, wherein, SIR
ufor the up initial signal interference ratio preset, λ
ufor the uplink interference surplus preset; According to the described E measured
d, I
dand L
d, according to P
d=SIR
d+ I
d+ λ
d+ L
d+ E
d, calculate the descending open loop transmit power P corresponding with each described UE respectively
d, wherein, SIR
dfor the down initial signal interference ratio preset, λ
dfor the descending interference margins preset, E
dfor the descending gain of distributed areas, described UE place.
2. method according to claim 1, is characterized in that, described up gain E
u, described descending gain E
dwith described uplink interference I
uestimated by base station.
3. method according to claim 2, is characterized in that, described up expectation received power P
ucalculated by base station.
4. method according to claim 2, is characterized in that, described method comprises further: described base station is by described up gain E
uwith described uplink interference I
usend to radio network controller (RNC);
Described up expectation received power P
ucalculated by described RNC.
5. method according to claim 2, is characterized in that, described method comprises further: described UE is by described descending interference I
dwith descending path loss L
dsend to described base station;
Described descending open loop transmit power is calculated by described base station.
6. method according to claim 2, is characterized in that, described method comprises further: described base station is by described descending gain E
dsend to RNC; Described UE is by described descending interference I
dwith descending path loss L
dsend to described RNC;
Described descending open loop transmit power P
dcalculated by described RNC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010281388.9A CN102404830B (en) | 2010-09-13 | 2010-09-13 | Method for determining uplink desired received power and downlink open loop transmitted power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010281388.9A CN102404830B (en) | 2010-09-13 | 2010-09-13 | Method for determining uplink desired received power and downlink open loop transmitted power |
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| Publication Number | Publication Date |
|---|---|
| CN102404830A CN102404830A (en) | 2012-04-04 |
| CN102404830B true CN102404830B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010281388.9A Expired - Fee Related CN102404830B (en) | 2010-09-13 | 2010-09-13 | Method for determining uplink desired received power and downlink open loop transmitted power |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830202B (en) * | 2018-08-10 | 2022-02-25 | 华为技术有限公司 | Communication method, device and communication system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587697B2 (en) * | 2001-05-14 | 2003-07-01 | Interdigital Technology Corporation | Common control channel uplink power control for adaptive modulation and coding techniques |
| CN101075830A (en) * | 2006-05-17 | 2007-11-21 | 大唐移动通信设备有限公司 | Method for determining down initial transmitting power |
| CN101094015A (en) * | 2006-06-23 | 2007-12-26 | 普天信息技术研究院 | Method for controlling initial emission power in open loop in mobile communication system |
-
2010
- 2010-09-13 CN CN201010281388.9A patent/CN102404830B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587697B2 (en) * | 2001-05-14 | 2003-07-01 | Interdigital Technology Corporation | Common control channel uplink power control for adaptive modulation and coding techniques |
| CN101075830A (en) * | 2006-05-17 | 2007-11-21 | 大唐移动通信设备有限公司 | Method for determining down initial transmitting power |
| CN101094015A (en) * | 2006-06-23 | 2007-12-26 | 普天信息技术研究院 | Method for controlling initial emission power in open loop in mobile communication system |
Non-Patent Citations (1)
| Title |
|---|
| 3GPP TS.Protocol Specification (Release 8).《3GPP TS 25.331 V8.6.0》.2009, * |
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| CN102404830A (en) | 2012-04-04 |
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