CN101132202A - Method and device for adjusting power of high-speed downlink shared channel - Google Patents
Method and device for adjusting power of high-speed downlink shared channel Download PDFInfo
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- CN101132202A CN101132202A CNA2006101125917A CN200610112591A CN101132202A CN 101132202 A CN101132202 A CN 101132202A CN A2006101125917 A CNA2006101125917 A CN A2006101125917A CN 200610112591 A CN200610112591 A CN 200610112591A CN 101132202 A CN101132202 A CN 101132202A
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Abstract
This invention discloses a method and a device for adjusting power of high speed shared channels, in which, the method includes: RNC arranges a user into a corresponding region set based on the location of an access user in a local area to determine the ratio of the user number accessed in the set and total user number accessed in the local area is greater than or equal to the threshold value and select the smallest emission power from the emission power of HS-DSCH channel corresponding to the regional set to inform the base station to adjust the emission power of the HS-DSCH emission power to the smallest one when it is not in conformity with the current one of the HS-DSCH.
Description
Technical field
The present invention relates to the high speed descending grouping access system HSDPA of moving communicating field, particularly a kind of method and device of adjusting high speed downlink shared channel HS-DSCH power.
Background technology
In order to improve the traffic data rate of down link in 3G system communication, the key technology that high speed descending grouping access system HSDPA (High Speed Downlink Packet Access) adopts comprises link circuit self-adapting modulating-coding technology AMC (Automatic Modulation Coding), mixes the fast dispatch of automatic request retransmission technology HARQ (Hybrid Automatic Repeat Request) and base station side etc.; Wherein, AMC is by adopting more encoding rate and multiple modulation system (QPSK, 16QAM) combination, adjust the modulation and the coded system of data adaptively according to link-quality, with compensation because the influence of fading that channel variation is caused to received signal, thereby improve the signal to noise ratio of signal.
In the HSDPA system, high speed downlink shared channel HS-DSCH (High Speed-Downlink SharedChannel) is used to transmit data, and it is mapped to high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH (HighSpeed-Physical Downlink Shared Channel).Different user terminal UE (User Equipment) shares the HS-PDSCH channel by time division multiplexing and code division multiplexing.The distribution of HS-PDSCH channel initial resource and modification are reshuffled by Physical Shared Channel and are finished, consider the transmittability of Traffic Channel and the transmission reliability of control channel, at present in the application of TDD (Time Division Duplex) system, the HS-PDSCH channel is monopolized one or several time slot usually, in conjunction with illustrated in figures 1 and 2, the layoutprocedure of HS-PDSCH channel emission power is as follows in the HSDPA system: the HS-PDSCH channel transmitting power is controlled by Node B, in Physical Shared Channel reconfiguration request (PHYSICAL SHARED CHANNELRECONFIGURATION REQUEST) message, carried the relevant power parameter HS-PDSCH and HS-SCCH Total Power of HS-PDSCH channel, the i.e. maximum transmission power that channel high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH and high speed signal control channel HS-SCCH (High Speed-SignalingControl Channel) coding allows in a time slot, total maximum transmission power of HS-PDSCH channel and HS-SCCH channel is limited in the base station according to this power.
If comprised the HS-PDSCH and HS-SCCH Total Power information element IE (Information Element) of assigned timeslot in " PHYSICAL SHARED CHANNEL RECONFIGURATION REQUEST " message, then this time slot allocation should not surpass the indicated performance number of this IE for total transmitting power of HS-PDSCH channel and HS-SCCH channel; Do not surpass the total transmitting power in sub-district if carry the performance number of this IE or indication in the message, then the power that is not used by other channel in this time slot can be distributed to HS-PDSCH channel and HS-SCCH channel.The HS-PDSCH channel adopts constant power to launch, and the PSDPA system adopts different coding and modulation systems to adapt by AMC and HARQ technology at different channel circumstances, adopts rate controlled to replace power control.
For covering and the throughput that guarantees system, RNC of the prior art adopts the descending maximum transmission power of base station usually to the transmitting power of HS-PDSCH channel configuration, in fact in order to increase covering, reduce the networking cost, this transmission power level is bigger usually, therefore following a kind of situation can appear: the user that Node B need dispatch all or major part be in center of housing estate zone (or not at cell edge), and channel quality is relatively good, at this moment, after Node B adopts the AMC technology that the coded system of high-order is arrived in the HS-PDSCH channel adjustment, RNC is that the transmitting power of HS-PDSCH channel configuration is more than sufficient, therefore, will produce unnecessary power resource waste, and excessive power increased the interference of minizone, also influenced the capacity and the throughput of whole system.
Summary of the invention
In view of this, the invention provides a kind of method of the HS-DSCH of adjustment channel power, cause the wasting of resources of HS-DSCH channel power and the problem of increase area interference owing to the HS-DSCH channel emission power is excessive in order to solve in the prior art.
The invention provides following technical scheme:
A kind of method of adjusting power of high-speed downlink shared channel comprises step:
RNC belongs to corresponding regional ensemble according to inserting the position of user in the sub-district with it, and wherein each regional ensemble disposes corresponding high speed descending sharing channel transmitting power respectively;
The ratio of determining the total number of users that inserts in the number of users that inserts in each regional ensemble and the sub-district is greater than or equal to the regional ensemble of threshold value, and selects minimum emissive power from the pairing high speed descending sharing channel transmitting power of determining of regional ensemble;
Described minimum emissive power and high speed descending sharing channel current transmit power are compared, and informing base station is adjusted into described minimum emissive power with the high speed descending sharing channel transmitting power when both are inconsistent.
The district pilots measured value that RNC reports according to travelling carriage determines to insert the regional ensemble that the user belonged to.
The ratio of the pilot measurement value of this sub-district that described access user receives and the pilot measurement value of the strongest adjacent cell that this user receives determines that described access user attaching is in described interval corresponding regional ensemble in preset ratio threshold value interval.
Described threshold value is not less than 0.5.
The high speed descending sharing channel transmitting power of each regional ensemble configuration is meant that all users that satisfy in regional ensemble adopt high order modulation and reach certain error rate needed base station transmitting power when requiring.
Described high speed descending sharing channel transmitting power is according to the maximum of target signal to noise ratio, the downlink path loss that is in the user's correspondence in the regional ensemble pre-estimated, and the descending interference mean value of pre-estimating that is in the user's correspondence in the regional ensemble is determined.
During the RNC initialization, the high speed descending sharing channel current transmit power is configured to the base station maximum transmission power, perhaps is configured to the high speed descending sharing channel transmitting power of one of them regional ensemble correspondence.
A kind of device of adjusting channel power comprises:
First module is used for according to inserting the position of user in the sub-district it being belonged to corresponding regional ensemble, and wherein each regional ensemble disposes corresponding high speed descending sharing channel transmitting power respectively;
Unit second, the ratio that is used for determining the total number of users of access in number of users that each regional ensemble inserts and the sub-district is greater than or equal to the regional ensemble of threshold value, and selects minimum emissive power from definite pairing high speed descending sharing channel transmitting power of regional ensemble;
Unit the 3rd be used for described minimum emission is compared with the high speed descending sharing channel current transmit power, and informing base station is adjusted into described minimum emissive power with the high speed descending sharing channel transmitting power when both are inconsistent.
The district pilots measured value that described first module reports according to travelling carriage determines to insert the regional ensemble that the user belonged to.
Described first module is determined the regional ensemble of described access user attaching in described interval correspondence when the ratio of the pilot measurement value of this sub-district that described access user receives and the pilot measurement value of the strongest adjacent cell that this user receives is in preset ratio threshold value interval.
Beneficial effect of the present invention is as follows:
1, RNC is to satisfy in certain zone all users to adopt high order modulation and reach certain error rate needed base station transmitting power when requiring for the HS-PDSCH channel emission power of each regional ensemble configuration in the inventive method, so can not reduce the throughput of system;
2, under the situation that guarantees throughput of system, the present invention effectively adjusts the HS-PDSCH channel emission power upper limit according to residing position of user and environment change, helps reducing unnecessary power resource waste, reduce system interference and increasing power system capacity;
3, the present invention adopts RNC to adjust the method for HS-PDSCH channel emission power, utilizes existing method of measurement and signaling fully, therefore can not increase more burden to system.
Description of drawings
Fig. 1 is a Physical Shared Channel reconfiguration course schematic diagram;
Fig. 2 is a HSDPA system resource configuration schematic diagram;
Fig. 3 periodically adjusts the realization flow figure of HS-PDSCH channel emission power for RNC in the embodiment of the invention;
Fig. 4 is an apparatus structure schematic diagram of adjusting the HS-PDSCH channel power in the embodiment of the invention.
Embodiment
In order to solve in the prior art, and increase the problem of area interference owing to the wasting of resources of the excessive HS-DSCH of the causing channel power of HS-DSCH channel emission power; The present invention proposes the method for adjusting the HS-PDSCH channel power in the HSDPA system, along with the change of user in regional ensemble, RNC inserts user attaching in the regional ensemble of correspondence with each, the ratio of the total number of users that inserts in number of users that inserts in definite then each regional ensemble and the sub-district is greater than or equal to the regional ensemble of threshold value, and from the pairing HS-PDSCH channel emission power of determining of regional ensemble, select minimum emissive power, informing base station is adjusted into described minimum emissive power with the HS-PDSCH channel emission power when described minimum emission is inconsistent with HS-PDSCH channel current transmit power.
RNC is divided into microzonation a plurality of regional ensemble Set (i) such as inside, centre and edge in advance based on the position that geographical environment, wireless environment or the user of sub-district may occur in the sub-district; RNC is positioned at the HS-PDSCH channel emission power P of the situation of zones of different set for the pre-configured correspondence of each regional ensemble Set (i) according to the user of each HS-PDSCH channel bearing after regional ensemble is divided
i, this transmitting power is determined according to the factors of estimating such as system loading, radius of society and environment, P
iPhysical meaning be meant that all users that satisfy in regional ensemble Set (1)～Set (i) adopt high order modulation and reach certain error rate needed base station transmitting power when requiring, and can calculate by following formula:
P
i=(SIR)
Target+ L
i+ I
iFormula (1)
Wherein, (SIR)
TargetFor satisfying the target signal to noise ratio that certain error rate requires under the high order modulation; L
iBe the maximum in the downlink path loss that is in all the user's correspondences in the regional ensemble Set (i), the L that different sets Set (i) is corresponding
iValue is different; I
iFor the descending time slot that is in all the user's correspondences in the regional ensemble Set (i) disturbs mean value, when the user was positioned at the zones of different set, the signal strength signal intensity of the neighbor cell base station that receives was also different, so the descending interference mean value of zones of different set is also different.
RNC at first will carry out initialization to the parameter of its inside before starting, and major parameter comprises:
1, pilot signal strength ratio threshold value α
i, the cell size that this value covers during according to networking and the power configuration setting of neighbor cell.
2, ratio value β, this value can be determined according to Simulation results, advise that this value is greater than 0.5.
3, HS-PDSCH channel current transmit power P
Cur, be the Initial Trans P of HS-PDSCH channel with its assignment
0, P
0Can be configured to the base station maximum transmission power; Also can be configured to other Configuration Values, the concrete configuration value should be considered the cell size that covered; Also can be configured to the HS-PDSCH channel emission power P of the regional ensemble correspondence of RNC initial setting up
i, for example, suppose that RNC is divided into central area Set (1), zone line Set (2) and (3) three regional ensembles of fringe region Set with microzonation, then this moment P
0Can be set to the corresponding HS-PDSCH channel emission power P of fringe region Set (3)
3At HS-PDSCH channel emission power P
CurIn the configuration, HS-PDSCH channel emission power value should not surpass the maximum carrier transmit power of Node B.
4, packet switching user's number N um (i) in the regional ensemble, at first RNC is initialized as Num (i)=0 with it; Along with packet switching user's access, RNC can will insert user's number accumulated counts.
Whether RNC can adopt the mode of periodic triggers to adjudicate in the present embodiment needs to adjust the HS-PDSCH channel emission power to determine new HS-PDSCH channel emission power.As shown in Figure 3, periodically to adjust the implementation procedure of HS-PDSCH channel emission power as follows for RNC:
In the step 301, when the packet switching user inserted, RNC determined to insert the ownership of user in regional ensemble by two kinds of methods, and first method is this district pilots measured value PCCPCH according to each reporting of user
RSCP (Primary Common Control Physical Channel Received Signal Code Power) determines that this measured value can directly reflect the distance of user apart from the base station; The second method ratio that to be RNC calculate both according to this district pilots measured value and the adjacent district pilots measured value of each reporting of user is determined, if this ratio in the ratio threshold value interval of initial setting up, determines then that this inserts user attaching in this interval The corresponding area set.
Illustrate below and will insert the method for user attaching: pre-configured two pilot signal strength ratio threshold value α to corresponding regional ensemble
1And α
2(α
1＞α
2), RNC is divided into the regional environment in the sub-district three regional ensembles in advance: central area, zone line and fringe region, agreement regional ensemble Set (1) expression central area, regional ensemble Set (2) represents zone line, regional ensemble Set (3) represents fringe region; If the ratio of the pilot signal strength of the strongest adjacent cell that the pilot signal strength of this sub-district that the user receives and this user receive is greater than or equal to α
1, determine that then this user is in central area Set (1); If the ratio of the pilot signal strength of the strongest adjacent cell that the pilot signal strength of this sub-district that the user receives and this user receive is less than α
1, but be greater than or equal to α
2, then determine this user area region S et (2) that mediates; All the other users are defined as being in fringe region Set (3).
In the step 302, after RNC finishes all access user attachings, packet switching user's number N um (i) in each regional ensemble in the statistics sub-district; RNC can this number of periodic statistics, also can add up this number according to some Event triggered.
In the step 303, suppose that the packet switching user in certain sub-district adds up to N, preset ratio value β is greater than or equal to 0.5, and at this moment, RNC can judge and exists a regional ensemble to satisfy following inequality in each sub-district at least:
This formulae express is greater than or equal to the preset ratio value for the ratio of packet switching user's the number that is in regional ensemble Set (1)～Set (i) and the packet switching user's in this sub-district total number, be most packet switching users be in the sub-district regional ensemble Set (1)～Set (i) in, reflected and inserted the aggregation extent of user in the sub-district.
In the step 304, RNC finds the minimum emissive power value in the HS-PDSCH channel emission power of the regional ensemble correspondence that satisfies above-mentioned formula (2), be designated as P
Min
Describe P below in detail
MinDefinite mode:
Suppose that RNC is divided into central area Set (1), zone line Set (2) and (3) three regional ensembles of fringe region Set with microzonation, its corresponding HS-PDSCH channel emission power is respectively P1, P2 and P3, and corresponding packet switching user's number is respectively Num (1), Num (2) and Num (3);
If the middle packet switching user's of packet switching user's number N um (1), central area Set (1) and zone line Set (2) number N um (1) and Num (2) summation and central area Set (1), zone line Set (2) and the middle packet switching user's of fringe region Set (3) number N um (1), Num (2) and Num (3) summation satisfy above-mentioned formula (2) simultaneously among the central area Set (1), then determine the HS-PDSCH channel emission power P that central area Set (1) is corresponding
1Be minimal power values P
Min
If the middle packet switching user's of packet switching user's number N um (1) and Num (2) summation and central area Set (1), zone line Set (2) and fringe region Set (3) number N um (1), Num (2) and Num (3) summation satisfy above-mentioned formula (2) simultaneously among central area Set (1) and the zone line Set (2), then determine the HS-PDSCH channel emission power P that zone line Set (2) is corresponding
2Be minimal power values P
Min
If have only number N um (1), Num (2) and Num (3) summation of packet switching user among central area Set (1), zone line Set (2) and the fringe region Set (3) to satisfy above-mentioned formula (2), then determine the HS-PDSCH channel emission power P that fringe region Set (3) is corresponding
3Be minimal power values P
Min
In the step 306, when inconsistent, RNC renewal HS-PDSCH channel current transmit power is the minimum emissive power of HS-PDSCH channel to the transmitting power that needs at the HS-PDSCH channel with HS-PDSCH channel current transmit power; Send " PHYSICAL SHARED CHANNELRECONFIGURATION REQUEST " message to NodeB simultaneously, having carried in this message and having adjusted the HS-PDSCH channel emission power is the information of HS-PDSCH channel minimum emissive power.
Accordingly, the device that present embodiment is a kind of adjusts the HS-PDSCH channel power as shown in Figure 4, this device comprises:
The 3rd unit 42, be used for described minimum emissive power and high speed descending sharing channel current transmit power that described second unit 41 is selected are compared, and informing base station is adjusted into described minimum emissive power with the high speed descending sharing channel transmitting power when both are inconsistent.
The present invention periodically adjusts the HS-PDSCH channel emission power by RNC, after determining the transmitting power that the HS-PDSCH channel needs, sending message notifies it to adjust the HS-PDSCH channel emission power to Node B, make the present position of most packet switching users in this channel emission power and this sub-district and interference environment etc. more adaptive, reduced the waste of unnecessary power resource and, promoted the capacity and the throughput of HSDPA system adjacent area user's interference.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a method of adjusting power of high-speed downlink shared channel is characterized in that, comprises step:
RNC belongs to corresponding regional ensemble according to inserting the position of user in the sub-district with it, and wherein each regional ensemble disposes corresponding high speed descending sharing channel transmitting power respectively;
The ratio of determining the total number of users that inserts in the number of users that inserts in each regional ensemble and the sub-district is greater than or equal to the regional ensemble of threshold value, and selects minimum emissive power from the pairing high speed descending sharing channel transmitting power of determining of regional ensemble;
Described minimum emissive power and high speed descending sharing channel current transmit power are compared, and informing base station is adjusted into described minimum emissive power with the high speed descending sharing channel transmitting power when both are inconsistent.
2. the method for claim 1 is characterized in that, the district pilots measured value that RNC reports according to travelling carriage determines to insert the regional ensemble that the user belonged to.
3. method as claimed in claim 2, it is characterized in that, the ratio of the pilot measurement value of this sub-district that described access user receives and the pilot measurement value of the strongest adjacent cell that this user receives determines that described access user attaching is in described interval corresponding regional ensemble in preset ratio threshold value interval.
4. the method for claim 1 is characterized in that, described threshold value is not less than 0.5.
5. the method for claim 1, it is characterized in that the high speed descending sharing channel transmitting power of each regional ensemble configuration is meant that all users that satisfy in regional ensemble adopt high order modulation and reach certain error rate needed base station transmitting power when requiring.
6. method as claimed in claim 5, it is characterized in that, described high speed descending sharing channel transmitting power is according to the maximum of target signal to noise ratio, the downlink path loss that is in the user's correspondence in the regional ensemble pre-estimated, and the descending interference mean value of pre-estimating that is in the user's correspondence in the regional ensemble is determined.
7. the method for claim 1 is characterized in that, during the RNC initialization, the high speed descending sharing channel current transmit power is configured to the base station maximum transmission power, perhaps is configured to the high speed descending sharing channel transmitting power of one of them regional ensemble correspondence.
8. a device of adjusting channel power is characterized in that, comprising:
First module is used for according to inserting the position of user in the sub-district it being belonged to corresponding regional ensemble, and wherein each regional ensemble disposes corresponding high speed descending sharing channel transmitting power respectively;
Unit second, the ratio that is used for determining the total number of users of access in number of users that each regional ensemble inserts and the sub-district is greater than or equal to the regional ensemble of threshold value, and selects minimum emissive power from definite pairing high speed descending sharing channel transmitting power of regional ensemble;
Unit the 3rd be used for described minimum emission is compared with the high speed descending sharing channel current transmit power, and informing base station is adjusted into described minimum emissive power with the high speed descending sharing channel transmitting power when both are inconsistent.
9. device as claimed in claim 8 is characterized in that, the district pilots measured value that described first module reports according to travelling carriage determines to insert the regional ensemble that the user belonged to.
10. device as claimed in claim 9, it is characterized in that, described first module is determined the regional ensemble of described access user attaching in described interval correspondence when the ratio of the pilot measurement value of this sub-district that described access user receives and the pilot measurement value of the strongest adjacent cell that this user receives is in preset ratio threshold value interval.
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| CN2006101125917A CN101132202B (en) | 2006-08-24 | 2006-08-24 | Method and device for adjusting power of high-speed downlink shared channel |
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| CN2006101125917A CN101132202B (en) | 2006-08-24 | 2006-08-24 | Method and device for adjusting power of high-speed downlink shared channel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971650A (en) * | 2008-04-01 | 2011-02-09 | 日本电气株式会社 | Wireless communication system, base station, wireless communication method, and program |
| WO2011116513A1 (en) * | 2010-03-23 | 2011-09-29 | Huawei Technologies Co., Ltd. | Method for controlling interference in a cellular communication arrangement |
| CN103596254A (en) * | 2012-08-16 | 2014-02-19 | 京信通信系统（广州）有限公司 | Method for base-station self-configuration and base station |
| WO2016029691A1 (en) * | 2014-08-25 | 2016-03-03 | Lenovo (Beijing) Co., Ltd. | A system control method and a base station |
| CN117528732A (en) * | 2023-11-09 | 2024-02-06 | 青岛中企英才集团有限公司 | Control method and system of wireless network equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1232063C (en) * | 2002-01-21 | 2005-12-14 | 三星电子株式会社 | Apparatus and method for distribution of power in HSDPA system |
| CN100372429C (en) * | 2004-07-02 | 2008-02-27 | 华为技术有限公司 | Method for distributing downward physics channel power in HSDPA system |
| CN100362770C (en) * | 2004-09-30 | 2008-01-16 | 华为技术有限公司 | Rapid congestion controlling method in WCDMA system |
-
2006
- 2006-08-24 CN CN2006101125917A patent/CN101132202B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971650A (en) * | 2008-04-01 | 2011-02-09 | 日本电气株式会社 | Wireless communication system, base station, wireless communication method, and program |
| US8515430B2 (en) | 2008-04-01 | 2013-08-20 | Nec Corporation | Wireless communication system, base station, wireless communication method, and program |
| WO2011116513A1 (en) * | 2010-03-23 | 2011-09-29 | Huawei Technologies Co., Ltd. | Method for controlling interference in a cellular communication arrangement |
| CN103596254A (en) * | 2012-08-16 | 2014-02-19 | 京信通信系统（广州）有限公司 | Method for base-station self-configuration and base station |
| CN103596254B (en) * | 2012-08-16 | 2017-02-22 | 京信通信系统（广州）有限公司 | Method for base-station self-configuration and base station |
| WO2016029691A1 (en) * | 2014-08-25 | 2016-03-03 | Lenovo (Beijing) Co., Ltd. | A system control method and a base station |
| CN117528732A (en) * | 2023-11-09 | 2024-02-06 | 青岛中企英才集团有限公司 | Control method and system of wireless network equipment |
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| CN101132202B (en) | 2011-03-30 |
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