CN100456650C - Method for setting power bias and carrying out system dispatching - Google Patents
Method for setting power bias and carrying out system dispatching Download PDFInfo
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Abstract
The present invention relates to a method for setting power bias and carrying out system dispatching, which has the core that according to the power of a high-speed downlink shared channel (HS-DSCH) and the spread spectrum code N of an HS-PDSCH channel, wherein the power is allocated by the system, the sending power of each code channel is determined. According to the sending power of a common pilot channel CPICH and the sending power of each determined code channel, wherein the sending power is allocated by the system, the corresponding power bias measured by CQI is set up. By the present invention, each code channel can be caused to send data at the same power, and thereby, the uncertainty and the complexity of the sending power and the spread spectrum code of the HSDPA user are decreased, and the sending power of the HSDPA user remains constant for a space, and consequently, the influence generated on CQI measurement by the fluctuation of the HSDPA sending power is decreased; moreover, the system can flexibly distribute the power and the spread spectrum code resource and dynamically manage the resource between R99 and the HSDPA user. When a terminal receives and makes 16QAM demodulation soft decision, the relative receiving power of the terminal can be accurately calculates through the exact measurement of the CPICH channel directly, whereas, the relative power bias does not need to be measured in real time.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method that power bias is set and carries out system call.
Background technology
HSDPA (High Speed Downlink Packet Access; The high speed downlink packet access) technology is WCDMA (Wide-band Code Division Multiple Access; Wideband Code Division Multiple Access (WCDMA)) system improves the key technology of descending hardware circuit solution and system spectral efficiency.
Up HS-DPCCH channel (the High Speed-dedicatedphysical control channel that passes through of HSDPA technology; High-Speed Dedicated Physical Control Channel), the whether accurately information of downlink data receiving and CQI (the Channel Quality lndicator of current reception of feedback UE; The channel quality indication) information; At descending HS-PDSCH (the High Speed Physical Downlink SharedChannel that passes through, high-speed physical downlink shared channel (HS-PDSCH)) time-division and code division multiplexing mode, system transmits each user data, and select rational transformat, and by HS-SCCH (High SpeedDownlink Shared Channel; High speed descending sharing channel) sends indications such as relevant code track resource, transmission block length and coding parameter.
At present, system's maximum can be supported the transmit traffic data of 15 HS-PDSCH channels, in order to support a plurality of user codes to divide multiplex data to transmit simultaneously, also need a plurality of HS-SCCH channels simultaneously, at this moment need system to transmit demand, dynamic-configuration HS-PDSCH channel number and power according to current resource and user data.Its process comprises the steps:
Step 1, the user measures the CQI value, and the demand information of described CQI value that measures and data transmission is fed back to system.
When user UE measures CQI, the received signal to noise ratio of P-CPICH channel (perhaps S-CPICH channel) and the received signal to noise ratio that the linear relationship between the HS-DSCH channel received signal to noise ratio: UE passes through to measure the reference P-CPICH channel (perhaps S-CPICH) that always sends have been utilized, (this signal to noise ratio has reflected the current wireless channel quality to reference received signal to noise ratio when calculating the HS-DSCH channel with relative power biasing Γ transmission, comprise path loss, the transient change of shadow fading and rapid fading.At present protocol definition the CQI value of 30 grades, 30 kinds of transformats of promptly corresponding HS-DSCH channel comprise modulation system, physical channel number, transmission block length and power resize ratio etc.)。UE according to described with reference to received signal to noise ratio and self demodulation performance, the corresponding relation of Block Error Rate when being HS-PDSCH channel received signal to noise ratio and different transpost formats, determine that single under this signal to noise ratio receives the CQI value that satisfies 10% Block Error Rate, and the CQI value by the current measurement of up HS-DPCCH channel cycle feedback.
Above-mentioned relative power biasing Γ is the parameter that system provides, the corresponding transformat of CQI value is the reference transmission form, and the quality of reception that block length, code channel number, modulation system or power adapt to the UE current demand signal can be transmitted by changing during actual transmission data in system.
Step 2, system receive each UE (User Equipment; Subscriber equipment) demand information of Fan Kui CQI metrical information and data transmission.
Step 3, system selects current corresponding subframe according to the information self-adapting of user feedback for the user, and corresponding transformat, each user's HS-PDSCH channel number, modulation system, transmission block length and power proportions.
System selects suitable transformat and sends to the user by descending HS-DSCH channel by the CQI value of user feedback, thereby can guarantee the quality of reception that single transmits under this channel condition.
Prior art related to the present invention one for the CQI valve system self adaptation by user feedback for the user dispatches current corresponding subframe, and the scheme of transformat, each user's HS-PDSCH channel number, modulation system, transmission block length and power proportions accordingly:
Having defined the corresponding transformat of CQI value in the current HSDPA agreement, is that 7 UE is an example with classification, the mapping relations of different CQI values and transformat as shown in Table 1:
| The CQI value | Transport block length | The HS-PDSCH number of channel | Modulation system | Reference power is adjusted factor |
| 1 | 137 | 1 | QPSK | 0 |
| 2 | 173 | 1 | QPSK | 0 |
| 3 | 233 | 1 | QPSK | 0 |
| 4 | 317 | 1 | QPSK | 0 |
| 5 | 377 | 1 | QPSK | 0 |
| 6 | 461 | 1 | QPSK | 0 |
| 7 | 650 | 2 | QPSK | 0 |
| 8 | 792 | 2 | QPSK | 0 |
| 9 | 931 | 2 | QPSK | 0 |
| 10 | 1262 | 3 | QPSK | 0 |
| 11 | 1483 | 3 | QPSK | 0 |
| 12 | 1742 | 3 | QPSK | 0 |
| 13 | 2279 | 4 | QPSK | 0 |
| 14 | 2583 | 4 | QPSK | 0 |
| 15 | 3319 | 5 | QPSK | 0 |
| 16 | 3565 | 5 | 16-QAM | 0 |
| 17 | 4189 | 5 | 16-QAM | 0 |
| 18 | 4664 | 5 | 16-QAM | 0 |
| 19 | 5287 | 5 | 16-QAM | 0 |
| 20 | 5887 | 5 | 16-QAM | 0 |
| 21 | 6554 | 5 | 16-QAM | 0 |
| 22 | 7168 | 5 | 16-QAM | 0 |
| 23 | 9719 | 7 | 16-QAM | 0 |
| 24 | 11418 | 8 | 16-QAM | 0 |
| 25 | 14411 | 10 | 16-QAM | 0 |
| 26 | 14411 | 10 | 16-QAM | -1 |
| 27 | 14411 | 10 | 16-QAM | -2 |
| 28 | 14411 | 10 | 16-QAM | -3 |
| 29 | 14411 | 10 | 16-QAM | -4 |
| 30 | 14411 | 10 | 16-QAM | -5 |
Table one
By table one as can be seen, it mainly comprises modulation system, physical channel number and transmission block length.Wherein modulation system comprises two kinds of QPSK and 16QAM.Increase along with the CQI value, the also corresponding increase of the length of transmission block, the also corresponding increase of physical channel number and order of modulation is because classification 7 is at most only supported 10 code channels, when the value of channel quality CQI surpasses 25, the setting that the corresponding transformat of CQI value keeps 25 correspondences.
Because the 16QAM modulation system can transmit the data message behind the odd encoder more, need higher power, and higher CQI value; Higher CQI value means can transmit more physical channels or the higher modulation system of employing, so that transmit more user data, so, when the demand of the CQI of user feedback value and transmission data was higher, system need select 16QAM modulation system or higher CQI value adaptively.
When the value of channel quality CQI surpasses 25, this moment is owing to the HS-PDSCH number of channel in the transformat of CQI value correspondence remains unchanged, so this moment, system reduced with reference to transmitted power system by changing power adjusting factor in various degree, to reduce the redundancy of transmitted power.
By the technical scheme of prior art as can be seen, there is following defective in it:
Because based on the identical reference power biasing Γ that system provides, the channel quality of reception difference of each UE in the sub-district can be different so report the CQI value of system, the corresponding transformat of different CQI values has different code channel numbers.During system call, based on present CQI mapping relations, if do not do the adjustment of CQI transformat, be difficult to the HS-DSCH channel gross power that each dispatched users transmitted power sum of assurance equals to distribute, and the HS-PDSCH code channel number that the code channel sum of each CU equals to distribute, therefore need adjust user's transformat, yet, when the transformat of current scheduling user is done certain adjustment, though can make full use of the power and the sign indicating number resource of system assignment to a certain extent, but be based on the receptivity difference of different terminals, therefore system's adjustment also just has a lot of uncertainties, is difficult to guarantee the optimum reception quality (for example guaranteeing 10% Block Error Rate) that transformat and power for the dispatched users selection satisfy its current channel.
If directly report the CQI value to select suitable transformat based on UE, then yard resource or the remaining situation of power resource appear in the subframe of distributing for each dispatched users probably, and this is a waste to system resource.And along with the variation of business proportion in the sub-district, the HSDPA power of each subframe is also along with variation, and increases the down load fluctuation, receives thereby influence down channel, and giving between HSDPA and R99 user dynamically simultaneously, the management of yard resource and power resource brings difficulty.
When UE receives the 16QAM signal, each subframe must be measured the relative received power of each HS-PDSCH channel in real time, need to measure in real time the relative power biasing, this need store the HS-PDSCH demodulating information, therefore will bring the storage time-delay, and increased the complexity that UE realizes to a certain extent, and measure the inaccurate demodulation performance loss that also can bring.
Summary of the invention
The purpose of this invention is to provide a kind of method that power bias is set and carries out system call, by the present invention, can make each code channel send data with identical power, thereby can reduce HSDPA user's transmitted power and uncertainty and the complexity that spread spectrum code resources is distributed, and in a period of time, make HSDPA user's transmitted power keep the constant possibility that becomes, thereby can reduce the influence that the fluctuation of HSDPA transmitted power is measured CQI; Simultaneously, because user power and sign indicating number resource allocation are simple, the flexible allocation of power and spread spectrum code resources can be accomplished by system, for the dynamic resource management of system between R99 and HSDPA user provides possibility; Moreover by the present invention, the power that each user receives each HS-PDSCH channel is exactly that the CPICH signal power measurement adds power bias Γ, terminal receives and when doing 16QAM demodulation soft-decision like this, can directly calculate its relative received power exactly, and no longer need to measure in real time the relative power biasing by the measurement of CPICH channel.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method that power bias is set, it comprises:
A, according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCHWith the number N of HS-PDSCH channel spread sign indicating number, the transmitted power of determining each code channel is P
HS-DSCH/ N;
B, according to the transmitted power P of the Common Pilot Channel CPICH of system assignment
Cpich, and the transmitted power of described definite each code channel, power bias Γ=(P that corresponding C QI measures is set
HS-DSCH/ N)/P
Cpich
The invention provides a kind of method of carrying out system call, it comprises:
C, according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCHWith HS-PDSCH channel spread sign indicating number N, the transmitted power of determining each code channel is P
HS-DSCH/ N; Transmitted power P according to the Common Pilot Channel CPICH of system assignment
Cpich, and the power of described definite each code channel, power bias Γ=(P that corresponding C QI measures is set
HS-DSCH/ N)/P
Cpich
D, system be according to the CQI information of each reporting of user in this sub-district, and the transmitted power of described definite each code channel, and the user is dispatched accordingly.
Wherein, described step D specifically comprises:
D1, system are respectively each user that need send data and dispatch different code channel number M according to the CQI information of each reporting of user, and make total code channel number of distributing for all users equal the number N of spreading code;
D2, determine described user's transmitted power, and it is distributed to described user according to the transmitted power of the code channel number M of dispatching and described definite each code channel for the user;
D3, the transformat when transmitting data for described user according to the CQI information distribution of each reporting of user;
D4, based on described transmitted power of distributing and transformat dispatched users transmission data.
Wherein, among the step D2, the described transmitted power process of determining described user comprises:
Described user's transmitted power equals the transmitted power that code channel number M for user scheduling multiply by described definite each code channel.
Wherein, described step D3 specifically comprises:
D31, with the CQI information mapping of described reporting of user to the transformat of single code channel;
D32, according to the mapping relations of CQI value and transformat, and the code channel number M of distributing determines that the user needs data block transmitted length and corresponding modulation system.
Wherein, described step D4 specifically comprises:
D41, system call user are transmitted data according to described transmitted power of distributing and transformat in the preset time section.
Wherein, described step D41 comprises:
D42, systematic survey HSDPA user's load;
D43, judge whether surplus of current power resource that system distributes for HSDPA user according to measurement result, if surplus is arranged, then be reduced to the number N of the HS-PDSCH channel spread sign indicating number of HSDPA user's distribution, and keep the original power of each code channel constant, and again according to the number N of newly assigned HS-PDSCH channel spread sign indicating number, CQI scheduling HSDPA user according to each HSDPA reporting of user transmits data, changes step D42 subsequently over to; Otherwise system call HSDPA user according to the number N transmission data of the HS-PDSCH channel spread sign indicating number of original distribution, changes step D42 over to then in the preset time section;
Further, described step D41 comprises:
D44, systematic survey are R99 user and the transmitted power of HSDPA user's distribution and the operating position of code channel resource, and the demand of current HSDPA user's data formation;
D45, be judged as transmitted power or the code channel resource that R99 user distributes according to measurement result whether redundancy is arranged, if having, and HSDPA user has more data to need to transmit, and then increases HSDPA user's power P accordingly
HS-DSCHOr the number N of HS-PDSCH channel spread sign indicating number, correspondingly change the power bias Γ=(P of each code channel
HS-DSCH/ N)/P
Cpich, notify each HSDPA user then, and again according to newly assigned HS-DSCH channel power P
HS-DSCHWith the number N of HS-PDSCH channel spread sign indicating number, transmit data according to the CQI scheduling HSDPA user of each HSDPA reporting of user, change step D44 subsequently over to; Otherwise, execution in step D46;
Whether D46, system are judged as power or the code channel resource that HSDPA user distributes according to measurement result redundancy, if redundancy is arranged, and when confirming that the system load of R99 CU is higher, then reduces HSDPA user's power P
HS-DSCHOr the number N of spreading code, correspondingly change the power bias Γ=(P of each code channel
HS-DSCH/ N)/P
Cpich, notify each HSDPA user then, and again according to newly assigned HS-DSCH channel power P
HS-DSCHWith the number N of HS-PDSCH channel spread sign indicating number, transmit data according to the CQI scheduling HSDPA user of each HSDPA reporting of user, change step D44 subsequently over to; Otherwise system call HSDPA user keeps original HS-DSCH channel power P in the preset time section
HS-DSCHSend with the number N scheduling HSDPA user's data of HS-PDSCH channel spread sign indicating number.
Wherein, before described step D1, comprise:
Each self-metering CQI value of HSDPA user feedback is to system.
As seen from the above technical solution provided by the invention, method of the present invention is according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCH, the number N of HS-PDSCH channel spread sign indicating number and the transmitted power P of Common Pilot Channel CPICH
Cpich, determine the transmitted power of each code channel, and corresponding power bias be set; System is according to the CQI information of each reporting of user in this sub-district, and the transmitted power of described definite each code channel, and the user is dispatched accordingly.By the present invention, can make each code channel send data with identical power, thereby can reduce HSDPA user's transmitted power and uncertainty and the complexity that spread spectrum code resources is distributed, and in a period of time, make HSDPA user's transmitted power keep the constant possibility that becomes, thereby can reduce the influence that the fluctuation of HSDPA transmitted power is measured CQI; Simultaneously, because user power and sign indicating number resource allocation are simple, the flexible allocation of power and spread spectrum code resources can be accomplished by system, for the dynamic resource management of system between R99 and HSDPA user provides possibility; Moreover by the present invention, the power that each user receives the HS-PDSCH channel is exactly that the CPICH signal power measurement adds power bias Γ, terminal receives and when doing 16QAM demodulation soft-decision like this, can directly calculate its relative received power exactly, and no longer need to measure in real time the relative power biasing by the measurement of CPICH channel.
Description of drawings
Fig. 1 is the flow chart of second embodiment provided by the invention.
Embodiment
The invention provides a kind of method that power bias is set, its core is: at first according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCHWith HS-PDSCH channel spread sign indicating number N, determine the transmitted power of each code channel; Transmitted power P according to the Common Pilot Channel CPICH of system assignment
Cpich, and the transmitted power of described definite each code channel, corresponding power bias is set.
The invention provides the method for carrying out system call, its core is: according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCH, HS-PDSCH channel spread sign indicating number N and Common Pilot Channel CPICH transmitted power P
Cpich, determine the power of each code channel, and corresponding power bias be set; System is according to the CQI information of each reporting of user in this sub-district, and the transmitted power of described definite each code channel, and the user is dispatched accordingly.
First embodiment provided by the invention is a kind of method that power bias is set, and it comprises:
Step 1, according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCHWith HS-PDSCH channel spread sign indicating number N, determine the transmitted power of each code channel;
System assignment is given HSDPA (the High Speed Downlink Packet Access of certain sub-district; The high speed downlink packet access) user's HS-DSCH gross power is P
HS-DSCH, HS-PDSCH (HighSpeed Physical Downlink Shared Channel, high-speed physical downlink shared channel (HS-PDSCH)) spreading code is N (the HS-PDSCH code channel number that this sub-district maximum possible transmits simultaneously), the transmitted power of determining each code channel is P
HS-DSCH/ N.
Step 2, according to the transmitted power P of the Common Pilot Channel CPICH of system assignment
Cpich, and the transmitted power of described definite each code channel, corresponding power bias is set.
Transmitted power P according to the Common Pilot Channel CPICH of system assignment
Cpich, and the transmitted power of described definite each code channel is provided with the reference power biasing Γ of channel quality measurement for UE: the HS-DSCH gross power be divided by distributing HS-PDSCH code channel number, relatively the watt level of P-CPICH channel, i.e. Γ=(P
HS-DSCH/ N)/P
Cpich
Second embodiment provided by the invention is that it comprises as shown in Figure 1 at the method for carrying out system call based on the power bias that is provided with:
The content of the concrete grammar and first embodiment is identical, is not described in detail.
Through after the above-mentioned steps, system of the present invention can be according to the CQI information of each reporting of user in this sub-district, and described corresponding power bias is set, and the user is dispatched accordingly.Specific implementation process comprises the steps.
System is according to each HSDPA (High Speed Downlink Packet Access; The high speed downlink packet access) the CQI metrical information of user feedback, and size of data, time delay demand etc., the number M of distributing the HS-PDSCH channel for each user, total code channel number is N, the user that channel quality is good distributes more HS-PDSCH channel, can improve the spectrum efficiency of system so to a greater degree.
Described user's transmitted power equals the power that code channel number M for user scheduling multiply by described definite each code channel.
At first, with the CQI information mapping of described reporting of user to the transformat of single code channel;
Then, according to the mapping relations of CQI value and transformat, and the HS-PDSCH code channel number M of distributing, determine that the user needs data block transmitted length and corresponding modulation system.
The CQI measured value has reflected the optimal transmission formats that satisfies this channel quality, system end is preserved the mapping table of a CQI measured value to single code channel transformat, in described mapping table, system can be mapped to this CQI measured value the transformat (transmission block size and modulation system) of single code channel, and for example the CQI value equals at 8 o'clock, and transformat originally corresponds to: block length 792, the QPSK modulation, 3 code channels, the current transformat that is mapped to single code channel is approximately block length 640, the 16QAM modulation.
Because reference power is set to the power of single code channel, so the excursion of the CQI value of each UE feedback is less, and the adjustment of this transformat is relatively accurate.Mapping relations can be provided by UE, and what this moment, UE fed back is the transformat of single code channel correspondence, and system keeps the identical CQI measured value and the mapping form of single code channel transformat (transmission block length and modulation system) with UE.
System is according to the mapping form, the CQI value that dispatched users is reported is mapped on the transformat of single code channel correspondence, transmission block size when the size that dispatched users transmits data equals CQI value and is mapped to single code channel multiply by the code channel number M of system for user's distribution, modulation system also adopts corresponding modulation system, and the delivering power power that equals single code channel multiply by the code channel number M that system distributes for the user like this.
Through after the above-mentioned steps, the present invention can be based on the transmitted power and the transformat dispatched users transmission data of described distribution.Specific implementation process comprises the steps.
In a period of time, whether the current system power resource allocation of systematic survey is less than the power P of the HS-DSCH that distributes
HS-DSCH, as if having, show that then current HSDPA user's data transmits demand deficiency, so, need to reduce maximum transmission code channel number N in the sub-district, and keep each code channel transmitted power constant.
After reducing the maximum transmission in sub-district code channel number, when the measurement current HSDPA user in sub-district transmits the data load increase, then increase the maximum code channel number (being no more than N) that transmits in sub-district, each code channel transmitted power is constant.The Measuring Time cycle is T1, and the minimum time cycle of adjustment is T1.
In a period of time, system sends identical HS-DSCH power (identical code channel number) to each continuous subframes as far as possible, when the system call user data is abundant, can all use the HSDPA power and the sign indicating number resource of having distributed during system call, when the HSDPA user data transmits demand deficiency, reduce HSDPA HS-PDSCH code channel number in real time, the also corresponding minimizing of transmitted power.
The 3rd embodiment provided by the invention is that it comprises at the method for carrying out system call based on the power bias that is provided with:
At first carry out step 11 among first embodiment to the implementation process of step 16, next carry out following steps.
Step 21, systematic survey are R99 user and the transmitted power of HSDPA user's distribution and the operating position of code channel resource, and the demand of current HSDPA user's data formation.
Step 22, be judged as transmitted power or the code channel resource that R99 user distributes according to measurement result whether redundancy is arranged,, and when HSDPA user has more data to transmit, then increase HSDPA user's power P accordingly if having
HS-DSCHOr HS-PDSCH channel spread sign indicating number N, correspondingly change the power bias Γ (P of each code channel
HS-DSCH/ N)/P
Cpich, notify each UE then, and again according to newly assigned HS-DSCH channel power P
HS-DSCHWith HS-PDSCH channel spread sign indicating number N, the CQI dispatched users transmission data according to each HSDPA reporting of user change step 21 subsequently over to; Otherwise, execution in step 23;
Whether step 23, system are judged as power or the code channel resource that HSDPA user distributes according to measurement result redundancy, if having, and the load of R99 CU higher system, then reduces HSDPA user's power P
HS-DSCHOr HS-PDSCH channel spread sign indicating number N, correspondingly change the power bias Γ (P of each code channel
HS-DSCH/ N)/P
Cpich, notify each UE then, and again according to newly assigned HS-DSCH channel power P
HS-DSCHWith HS-PDSCH channel spread sign indicating number N, the CQI dispatched users transmission data according to each HSDPA reporting of user change step 23 subsequently over to; Otherwise system call user keeps original HS-DSCH channel power P in the preset time section
HS-DSCHSend with HS-PDSCH channel spread sign indicating number N scheduling HSDPA user's data.
System can determine R99 and HSDPA user's the power and the concrete allocation strategy of spread spectrum code resources ratio according to professional size and priority.
It is the power of R99 user and HSDPA user's distribution and the operating position of sign indicating number resource for a systematic survey, according to professional size and priority policy, reduce and increase HSDPA user's power or HS-PDSCH channel spread sign indicating number resource, the P that the power of each HS-PDSCH code channel equals to redistribute
HS- DSCH/ N, the Measuring Time cycle is T2, the minimum time cycle of adjustment is T2.
Because each code channel distributes identical power, for the flexible combination of power and spread spectrum code channel resource provides possibility, during the enough and sign indicating number inadequate resource of power, it is to realize by the increase code rate that data transmit; Otherwise can utilize low code rate to bring gain.When system by measuring, when this sub-district HSDPA user data sent demand deficiency, system should reduce HSDPA power and code channel number.
System is that R99 user and HSDPA user distribute metastable power and HS-PDSCH channel spread sign indicating number resource, measurement by cycle a period of time, reshuffle according to R99 user and HSDPA user's transport service resource operating position: when power resource that needs as R99 user or HS-PDSCH channel spread sign indicating number inadequate resource, HSDPA user can reduce power or HS-PDSCH channel spread sign indicating number resource, the power of each code channel of HSDPA adjusts accordingly, new power bias Γ is notified to UE by reshuffling, and whole HSDPA data transmit and dispatch according to new CQI measured value; When power resource that needs as HSDPA user or HS-PDSCH channel spread sign indicating number inadequate resource, system can distribute more power resource or HS-PDSCH channel spread sign indicating number resource for HSDPA user, new power bias Γ is notified to UE by reshuffling, and whole HSDPA data transmit and dispatch according to new CQI measured value.
By the specific embodiments of the invention described above as can be seen, it has following beneficial effect:
By the present invention, the power that makes each user receive the HS-PDSCH channel adds power bias Γ for the CPICH signal power measurement, terminal receives and directly calculates its relative received power exactly by the measurement of CPICH channel when doing 16QAM demodulation soft-decision like this, and no longer needs to measure in real time the relative power biasing.
In addition, the present invention is because according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCH, HS-PDSCH channel spread sign indicating number N and Common Pilot Channel CPICH transmitted power P
CpichDetermine the power of each code channel, thereby can make each code channel send data with equal-wattage, and then can reduce uncertainty and the complexity that each user power of HSDPA and spread spectrum code resources are distributed, make HSDPA user in a period of time, keep constant transmitted power to become possibility, thereby can reduce the influence that the fluctuation of HSDPA transmitted power is measured CQI, simultaneously, because user power and sign indicating number resource allocation are simple, the flexible allocation of power and spread spectrum code resources can be accomplished by system, for the dynamic resource management of system between R99 and HSDPA user provides possibility.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (9)
1, a kind of method that power bias is set is characterized in that, comprising:
A, according to the power P of the high speed downlink shared channel HS-DSCH of system assignment
HS-DSCHWith the number N of the spreading code of high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH, the transmitted power of determining each code channel is P
HS-DSCH/ N;
B, according to the transmitted power P of the Common Pilot Channel CPICH of system assignment
Cpich, and the transmitted power of described definite each code channel, power bias Γ=(P that corresponding C QI measures is set
HS-DSCH/ N)/P
Cpich
2, a kind of method of carrying out system call is characterized in that, comprising:
C, according to the power P of the HS-DSCH of system assignment
HS-DSCHWith the number N of the spreading code of HS-PDSCH channel, the transmitted power of determining each code channel is P
HS-DSCH/ N; Transmitted power P according to the CPICH of system assignment
Cpich, and the transmitted power of described definite each code channel, power bias Γ=(P that corresponding C QI measures is set
HS-DSCH/ N)/P
Cpich
D, system be according to the CQI information of each reporting of user in this sub-district, and the transmitted power of described definite each code channel, and the user is dispatched accordingly.
3, method according to claim 2 is characterized in that, described step D specifically comprises:
D1, system are respectively each user that need send data and dispatch different code channel number M according to the CQI information of each reporting of user, and make total code channel number of distributing for all users equal the number N of spreading code;
D2, determine described user's transmitted power, and it is distributed to described user according to the transmitted power of the code channel number M of dispatching and described definite each code channel for the user;
D3, the transformat when transmitting data for described user according to the CQI information distribution of each reporting of user;
D4, based on described transmitted power of distributing and transformat dispatched users transmission data.
4, method according to claim 3 is characterized in that, among the step D2, the described transmitted power process of determining described user comprises:
Described user's transmitted power equals the transmitted power that code channel number M for user scheduling multiply by described definite each code channel.
5, method according to claim 3 is characterized in that, described step D3 specifically comprises:
D31, with the CQI information mapping of described reporting of user to the transformat of single code channel;
D32, according to the mapping relations of CQI value and transformat, and the code channel number M of distributing determines that the user needs data block transmitted length and corresponding modulation system.
6, according to claim 3,4 or 5 described methods, it is characterized in that described step D4 specifically comprises:
D41, system call user are transmitted data according to described transmitted power of distributing and transformat in the preset time section.
7, method according to claim 6 is characterized in that, described step D41 comprises:
D42, systematic survey HSDPA user's load;
D43, judge according to measurement result whether system has surplus for the current power resource that HSDPA user distributes, if surplus is arranged, then be reduced to the number N of the HS-PDSCH channel spread sign indicating number of HSDPA user's distribution, and keep the original power of each code channel constant, and again according to the number N of newly assigned HS-PDSCH channel spread sign indicating number, CQI scheduling HSDPA user according to each HSDPA reporting of user transmits data, changes step D42 subsequently over to; Otherwise system call HSDPA user according to the HS-PDSCH channel spread sign indicating number N transmission data of original distribution, changes step D42 over to then in the preset time section.
8, method according to claim 6 is characterized in that, described step D41 comprises:
D44, systematic survey are R99 user and the transmitted power of HSDPA user's distribution and the operating position of code channel resource, and the demand of current HSDPA user's data formation;
D45, be judged as transmitted power or the code channel resource that R99 user distributes according to measurement result whether redundancy is arranged, if having, and HSDPA user has more data to need to transmit, and then increases HSDPA user's power P accordingly
HS-DSCHOr the number N of HS-PDSCH channel spread sign indicating number, correspondingly change the power bias Γ=(P of each code channel
HS-DSCH/ N)/P
Cpich, notify each HSDPA user then, and again according to newly assigned HS-DSCH channel power P
HS-DSCHWith the number N of HS-PDSCH channel spread sign indicating number, transmit data according to the CQI scheduling HSDPA user of each HSDPA reporting of user, change step D44 subsequently over to; Otherwise, execution in step D46;
Whether D46, system are judged as power or the code channel resource that HSDPA user distributes according to measurement result redundancy, if redundancy is arranged, and when confirming that the system load of R99 CU is higher, then reduces HSDPA user's power P
HS-DSCHOr the number N of spreading code, correspondingly change the power bias Γ=(P of each code channel
HS-DSCH/ N)/P
Cpich, notify each HSDPA user then, and again according to newly assigned HS-DSCH channel power P
HS-DSCHWith the number N of HS-PDSCH channel spread sign indicating number, transmit data according to the CQI scheduling HSDPA user of each HSDPA reporting of user, change step D44 subsequently over to; Otherwise system call HSDPA user keeps original HS-DSCH channel power P in the preset time section
HS-DSCHSend with the number N scheduling HSDPA user's data of HS-PDSCH channel spread sign indicating number.
9, method according to claim 3 is characterized in that, comprises before described step D1:
Each self-metering CQI value of HSDPA user feedback is to system.
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| CN101374031B (en) * | 2007-08-24 | 2011-08-10 | 中兴通讯股份有限公司 | Code path integration method and apparatus |
| CN101488826B (en) * | 2008-01-17 | 2012-12-05 | 展讯通信（上海）有限公司 | HS-SCCH signaling encoding and processing method in HSDPA of TD-SCDMA system |
| CN101594636B (en) * | 2009-06-30 | 2011-05-11 | 中兴通讯股份有限公司 | Self-adaptive method and self-adaptive system for double-current inner ring link |
| CN101720123B (en) * | 2009-12-02 | 2012-10-17 | 华为技术有限公司 | Method, device and base station for setting power offset of channel |
| CN101877870B (en) * | 2010-06-21 | 2015-05-20 | 中兴通讯股份有限公司 | Method and device for measuring deviant MPO (Maximum Power Output) configuration |
| WO2011110124A2 (en) * | 2011-04-22 | 2011-09-15 | 华为技术有限公司 | Data transmission method and device |
| CN105680987A (en) * | 2012-03-16 | 2016-06-15 | 北京新岸线移动多媒体技术有限公司 | Method for realizing link self-adaption and network device |
| US11122520B2 (en) | 2013-09-18 | 2021-09-14 | Qualcomm Incorporated | Coverage enhancements for physical broadcast channel (PBCH) |
| CN104717736B (en) * | 2013-12-12 | 2019-01-01 | 中国移动通信集团公司 | A kind of LTE method for controlling downlink power and equipment |
| CN113923759A (en) * | 2020-07-10 | 2022-01-11 | 大唐移动通信设备有限公司 | Energy consumption control method, device, equipment and storage medium |
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