CN101026402A - Uplink outer-loop power control method for high speed uplink packet access - Google Patents

Abstract

Setting up a statistic period, the method includes steps: (1) when HSUPA nonreal time operation starts, RNC starts up statistic period, and carrying out statistics by using quality parameter values of up going channel at user side reported from Node B as statistical source value so as to obtain statistic value; (2) within a statistic period, if the statistic value does not meet requirement of quality of HSUPA nonreal time operation, RNC adjusts current signal interference ratio (SIR) of DPCCH according to prearranged strategy so as to obtain target SIR ; (3) through user side, RNC forwards the target SIR to Node B, and starts up new statistic period. Being applicable to outer ring power control procedure in HSUPA nonreal time operation, the invention can track change of channel condition effectively, adjust transmitting power in time so as to guarantee QoS, take full advantage of power resources, and raise capacity of sector.

Description

The method of ascending exterior ring power control during a kind of High Speed Uplink Packet inserts

Technical field

The present invention relates to a kind of method of ascending exterior ring power control, (High Speed Uplink Packet Access, HSUPA) method of middle ascending exterior ring power control belongs to communication technical field to relate to a kind of High Speed Uplink Packet access especially.

Background technology

Along with 3G system product and the further maturation of end product and user to uploading the growth of image/data, the wide Tape movement data traffic requirement of online game, 3rd Generation Partnership Project (3rd GenerationPartnership Project, 3GPP) begin to introduce up enhancement techniques HSUPA and strengthen network uplink capacity and service quality, improve wireless resource utility efficiency from Release6.

In order to support high speed business, (Enhanced DedicatedChannel E-DCH), is used for the transmission of high speed uplink packet access business, and its theoretical maximum upstream data rate that can realize is 5.6 Mbps to have increased the enhancing dedicated channel among the HSUPA newly.Strengthening Dedicated Physical Data Channel (Dedicated Physical Data Channel, DPDCH) in the open Loop Power control process, radio network controller (Radio Network Controller, RNC) be the enhancing transformat combination of reference (Enhanced-Transport Format Combination, E-TFC) configuration is with respect to Dedicated Physical Control Channel (Dedicated Physical Control Channel, DPCCH) reasonable power offset values, other E-TFC calculates desired transmission power level according to the E-TFC of reference then.Therefore, need only RNC and disposed more rational power offset values, and feed back the transmitting power that just can dynamically adjust on the DPCCH, satisfy the power demand of E-DCH channel under the different radio environment thus and change according to certain quality.

But in the HSUPA system, B node (Node B) can not resemble Wideband Code Division Multiple Access (WCDMA) (the Wideband Code Division Multiple Access of R99 version, WCDMA) etc. system is the same, reports the indication of mistake piece (CRCI) and the signal interference ratio error channel quality response parameters such as (SIRerror) of each data block.Node B can only send to RNC by the uplink data frames of user side and mix automatic repeat requests (HybridARQ, HARQ) failure indication or mix automatic repeat requests number of retransmissions (number of HARQRetransmissions, parameter such as NHR), therefore, usually can only be according to above-mentioned two controls that parameter comes HSUPA is carried out exterior ring power.

According to professional own characteristic in the HSUPA system, usually for IP phone (Voice over InternetProtocol, VOIP) or the stronger business of real-time such as S class business, because it is comparatively responsive to time delay, may there be the chance that retransmits thus or seldom, it is comparatively rational therefore adopting HARQ failure indication to carry out exterior ring power control.But, for non-real time services such as I class or category-B, carry out exterior ring power control though still can adopt HARQ failure indication, but because it is to time delay and insensitive, real-time is not strong, when therefore utilizing said method to carry out power control, not only taken transmitting power and Radio Resource, and the performance of whole service there is no too big raising and optimization.

Summary of the invention

The technical problem to be solved in the present invention provides the method for ascending exterior ring power control in a kind of High Speed Uplink Packet access, and this method is applied in the non-real time service of HSUPA, can effectively follow the tracks of changes in channel conditions, in time adjusts transmitting power.

The present invention realizes by following technical proposals:

The method of ascending exterior ring power control during a kind of High Speed Uplink Packet inserts, it preestablishes a statistics cycle, comprising:

(a) when High Speed Uplink Packet inserted non-real-time service and begins, radio network controller started measurement period, and was that statistics source value is added up with the user side uplink signal-channel quality parameter value that the B node reports, and obtained statistical value;

(b) in a described measurement period, when described statistical value does not satisfy the quality requirement of described High Speed Uplink Packet access non-real-time service, radio network controller is adjusted the current signal interference ratio of Dedicated Physical Control Channel according to predetermined policy, obtains the target signal interference ratio;

(c) radio network controller is forwarded to the B node with above-mentioned target signal interference ratio by user side, and starts new measurement period.

Further, in the described step (a), described user side uplink signal-channel quality parameter value is for mixing automatic repeat requests number of retransmissions value.

Further, the mean value of the automatic repeat requests number of retransmissions of the mixing value that reports for radio network controller receives in a measurement period B node of described statistical value.

Further, in the described step (b), it is described statistical value greater than the rise parameter value of setting or described statistical value less than the downward modulation parameter value of setting that described statistical value does not satisfy quality requirement that described High Speed Uplink Packet inserts non-real-time service.

Further, described step (b) comprises further:

(b1) when described statistical value during, current signal interference ratio is raised a predetermined step-length, obtain the target signal interference ratio greater than the rise parameter value set;

(b2) when described statistical value during,, obtain the target signal interference ratio with predetermined step-length of current signal interference ratio downward modulation less than the downward modulation parameter value set.

Further, described step (c) comprises further: radio network controller is forwarded to the B node with the FP frame of described target signal interference ratio by user's face side.

Further, this method also comprises: when described statistical value satisfies the quality requirement of described High Speed Uplink Packet access non-real-time service, the current goal signal interference ratio is not adjusted.

Further, this method also comprises:

The threshold value of B node report of user side uplink signal-channel quality parameter value is set;

When B node report of user side uplink signal-channel quality parameter value during greater than predetermined threshold value, with the above-mentioned parameter value that reports as statistics source value, otherwise, the parameter value that reports that receives is not dealt with.

Further, described measurement period is to set like this:

Determine that one adopts the user side uplink signal-channel quality parameter value statistical window of slip agreement, described statistical window length is a measurement period, and the cycle time of described statistical window length correspondence is greater than the pairing scheduled time of described sliding step;

At this moment, in a described statistical window length, when described statistical value satisfies the quality requirement of described High Speed Uplink Packet access non-real-time service, sliding step of described statistical window slip.

Description of drawings

Fig. 1 is the method flow diagram of ascending exterior ring power control among the embodiment of the invention HSUPA.

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is done to introduce further, but not as a limitation of the invention.

At first one NHR statistical window is set in the RNC side, this window utilizes sliding window protocol, the NHR value that is used for Node B is reported RNC is added up, set the length of window and the sliding step of this NHR statistical window simultaneously, and can in time react channel quality greater than the pairing scheduled time of described sliding step to guarantee this window the cycle time of NHR statistical window length correspondence at this moment; This external RNC side is also set the rise parameter value ThresNumReTransUp and the downward modulation parameter value ThresNumReTransDown of NHR statistical value.

For convenience of explanation, also the NHR statistical value is done a definition, that is, and number of retransmissions mean value $\mathrm{NumReTransAve}=\underset{i=1}{\overset{I}{\mathrm{\Σ}}}{\mathrm{NHR}}_i/I,$ Wherein: NHR _iBe the NHR value that the i time Node B reports to RNC, i for the number of times ordering of statistics (i=1,2 ..., I, the maximum statistics number of I for setting).

After carrying out above-mentioned setting, the ascending exterior ring power of non-real-time services such as I class or category-B among the HSUPA is controlled, as shown in Figure 1, comprise the steps:

Step 101 when non-real time services such as I class or category-B are set up, starts the NHR statistical window on E-DCH;

Step 102, RNC judges whether to receive the NHR value that Node B reports, if execution in step 103 if not, is returned execution in step 102;

Step 103, according to $\mathrm{NumReTransAve}=\underset{i=1}{\overset{I}{\mathrm{\Σ}}}{\mathrm{NHR}}_i/I,$ The NHR value that reports with the Node B that receives is a statistics source value, calculates the number of retransmissions mean value NumReTransAve of the NHR value that current NHR statistical window receives;

Step 104 judges whether current NHR statistical window length reaches predetermined value, if execution in step 105 if not, is returned execution in step 102;

Whether step 105 judges number of retransmissions mean value NumReTransAve greater than the rise parameter value ThresNumReTransUp that sets, if, illustrate that the transmission quality of this current business is relatively poor, execution in step 106, if not, execution in step 107;

Step 106, the predetermined step-length of current signal interference ratio rise with DPCCH obtains target signal interference ratio SIRtarget, and execution in step 110 then;

Step 107, judge that whether number of retransmissions mean value NumReTransAve is less than downward modulation parameter value ThresNumReTransDown, if, illustrate that the current transmission quality of this business is better, can suitably reduce power, execution in step 108, if not, illustrate that the current transmission quality of this business is stable, do not need to adjust execution in step 109;

Step 108, the predetermined step-length of current signal interference ratio downward modulation with DPCCH obtains target signal interference ratio SIRtarget, and execution in step 110 then;

Step 109, NHR statistical window are returned and are carried out 102 to sliding step of front slide;

Step 110, RNC sends new target signal interference ratio SIRtarget by the FP frame of user's face side to Node B, simultaneously parameters such as length of window is re-set as predetermined value, returns execution in step 102.

In another embodiment, in order to prevent in a NHR statistical window length owing to the frequent adjustment that a spot of accident causes power has taken place, can also a threshold T hresNumSampleUp who report the NHR value be set in the RNC side, at this moment, the NHR value that reports as Node B is during greater than this threshold value, RNC just with the above-mentioned NHR value that receives as statistics source value, otherwise, approximate think the NHR that does not report, channel is stable, does not adjust.That is: in the step 102 of the foregoing description, increase the corresponding judgment process, whether what judgement received reports the NHR value greater than the threshold T hresNumSampleUp that sets, if then continue execution in step 103, if not, then do not carry out any processing, return and carry out this step.

Need explanation a bit, in the above-described embodiments, all be that a NHR statistical window that adopts sliding window protocol is set, with this length of window is the measurement period of NHR value, judge according to the NHR statistical value of a measurement period in the time whether it satisfies the quality requirement of HSUPA non-real-time service, and carry out the adjustment of ascending exterior ring power with this; In other embodiments, also can measurement period be set by adopting other mode such as timer, according to a measurement period in the time the NHR statistical value or the statistical value of other retrievable current family side uplink signal-channel quality parameter value judge whether the statistical value of active user's side uplink signal-channel quality parameter value satisfies the quality requirement of HSUPA non-real-time service, and carry out adjustment control of ascending exterior ring power with this.

Should be understood that; concerning the those of ordinary skill in field, the technology of the present invention place; can be equal to accordingly according to technical scheme of the present invention and design thereof and change or replace, and all these changes or replacement, all should belong to the protection range of claims of the present invention.

Claims (9)

1. the method for ascending exterior ring power control is characterized in that during a High Speed Uplink Packet inserted, and preestablished a statistics cycle, comprising:

(a) when High Speed Uplink Packet inserted non-real-time service and begins, radio network controller started measurement period, and was that statistics source value is added up with the user side uplink signal-channel quality parameter value that the B node reports, and obtained statistical value;

(b) in a described measurement period, when described statistical value does not satisfy the quality requirement of described High Speed Uplink Packet access non-real-time service, radio network controller is adjusted the current signal interference ratio of Dedicated Physical Control Channel according to predetermined policy, obtains the target signal interference ratio;

(c) radio network controller is forwarded to the B node with above-mentioned target signal interference ratio by user's face side, and starts new measurement period.

2. the method for claim 1 is characterized in that, in the described step (a), described user side uplink signal-channel quality parameter value is for mixing automatic repeat requests number of retransmissions value.

3. method as claimed in claim 2 is characterized in that, the mean value of the automatic repeat requests number of retransmissions of the mixing value that described statistical value reports for radio network controller receives in a measurement period B node.

4. the method for claim 1, it is characterized in that, in the described step (b), it is described statistical value greater than the rise parameter value of setting or described statistical value less than the downward modulation parameter value of setting that described statistical value does not satisfy quality requirement that described High Speed Uplink Packet inserts non-real-time service.

5. method as claimed in claim 4 is characterized in that, described step (b) comprises further:

(b1) when described statistical value during, current signal interference ratio is raised a predetermined step-length, obtain the target signal interference ratio greater than the rise parameter value set;

(b2) when described statistical value during,, obtain the target signal interference ratio with predetermined step-length of current signal interference ratio downward modulation less than the downward modulation parameter value set.

6. the method for claim 1 is characterized in that, described step (c) comprises further: radio network controller is forwarded to the B node with the FP frame of described target signal interference ratio by user side.

7. the method for claim 1 is characterized in that, this method also comprises: when described statistical value satisfies the quality requirement of described High Speed Uplink Packet access non-real-time service, current signal interference ratio is not adjusted.

8. the method for claim 1 is characterized in that, this method also comprises:

The threshold value of B node report of user side uplink signal-channel quality parameter value is set;

When B node report of user side uplink signal-channel quality parameter value during greater than predetermined threshold value, with the above-mentioned parameter value that reports as statistics source value, otherwise, the parameter value that reports that receives is not dealt with.

9. the method for claim 1 is characterized in that, described measurement period is to set like this:

Determine that one adopts the user side uplink signal-channel quality parameter value statistical window of slip agreement, described statistical window length is a measurement period, and the cycle time of described statistical window length correspondence is greater than the pairing scheduled time of described sliding step;

At this moment, in a described statistical window length, when described statistical value satisfies the quality requirement of described High Speed Uplink Packet access non-real-time service, sliding step of described statistical window slip.

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