CN100550835C - A kind of method of monitoring flow service congestion in high-speed downlink packet accessing channel - Google Patents

Abstract

The invention discloses the method that a kind of high speed downlink packet inserts the traffic congestion monitoring of (HSDPA) channel upper reaches, after the Power Limitation thresholding was set, this method may further comprise the steps: A, collect on the HSDPA channel power information of incoming stream business; B, calculating and judge on the HSDPA channel all the gross power of incoming stream business whether greater than the Power Limitation thresholding, if, execution in step C; Otherwise, determine that the HSDPA channel is current and be in non-congestion state; C, determine that the HSDPA channel is in congestion state.Method provided by the present invention can take place to determine that the HSDPA channel is in congestion state when congested at the HSDPA channel, and the congestion control mechanism that starts the HSDPA channel.Correspondingly, the present invention provides the mechanism of some congested controls again, so that take place can in time remove or alleviate the congestion condition on the HSDPA channel when congested at the HSDPA channel.

Description

A kind of method of monitoring flow service congestion in high-speed downlink packet accessing channel

Technical field

The present invention relates to congested control technology, refer to a kind of method of monitoring flow service congestion in high-speed downlink packet accessing channel especially.

Background technology

The media stream business is expected to play an important role in 3G mobile network's Packet data service evolution.In this article, abbreviate the media stream business as the stream business in order to simplify description.For the stream that inserts high speed downlink packet access (HSDPA) channel is professional, the time wireless channel that becomes may make that stream is professional to be not being met to Transmission Time Interval (TTI) number of supporting designed medium access control (MAC) entity (MAC-hs) of HSDPA channel to require, thereby the stream business that causes having inserted for all does not have enough launching opportunities, thereby cause on the HSDPA channel all streams that inserted professional take place congested, and then causing the service quality of the business of flowing to be protected, Virtual network operator can't provide the user the desired stream business with QoS guarantee to the user.

In the prior art,, that is to say in the prior art at present, any method that can monitor that the stream business of carrying on the HSDPA channel is whether congested is not provided also not at the jamming control method that inserts HSDPA channel flow business; Accordingly, take place when congested, also just can not in time suitably adjust, make originally congested HSDPA channel no longer congested according to the professional concrete condition of carrying stream on the HSDPA channel at the HSDPA channel.Therefore, be badly in need of at present whether the monitoring flow business congested method takes place on a kind of HSDPA channel,, make the HSDPA channel no longer congested so that when generation is congested, in time the stream business that is carried on the HSDPA channel is adjusted.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method of monitoring flow service congestion in high-speed downlink packet accessing channel, uses the congestion condition that this method can obtain the HSDPA channel.

For achieving the above object, technical scheme of the present invention is achieved in that

The method of a kind of high-speed downlink packet access HSDPA channel upper reaches traffic congestion monitoring is provided with the Power Limitation thresholding, and this method may further comprise the steps:

A, collect on the HSDPA channel power information of incoming stream business;

B, calculating and judge on the HSDPA channel all the gross power of incoming stream business whether greater than the Power Limitation thresholding, if, execution in step C; Otherwise, determine that the HSDPA channel is current and be in non-congestion state;

C, determine that the HSDPA channel is in congestion state;

D, stream business that the HSDPA channel has been inserted are arranged according to the ascending order from 1 to N according to watt level;

E, definite sequence number J+1 that demarcates, boundary sequence number J+1 satisfies: the stream service power summation of sequence number 1 to J arrives the stream service power summation of J+1 greater than the Power Limitation thresholding that is provided with smaller or equal to the Power Limitation thresholding and the sequence number 1 of setting;

F1, will flow professional J+1 to the request of DCH access control module and switch to the DCH channel to N; Described DCH access control module is handled the professional access request of each stream respectively, for the professional access request of each stream provides the access judgement, returns request results message;

F2, judge whether the request results message of returning at each request is to agree to switch, if, execution in step F3 then; Otherwise, the pairing stream business of request results message is retained on the HSDPA channel, finish current handling process;

F3, judge whether current HSDPA channel is in congestion state, if then the pairing stream business of request results message is switched to the DCH channel; Otherwise, the pairing stream business of request results message is retained on the HSDPA channel.

Wherein, in the steps A, on the described collection HSDPA channel the power information of incoming stream business be:

The public information that reports according to NodeB is collected on the HSDPA channel power information of incoming stream business.

In addition, congested monitoring periods is set, before steps A, further comprises:

A, judge whether congested monitoring periods arrives, if arrive, execution in step A then; Otherwise, continue execution in step a;

Among the step B, definite HSDPA channel is current be in non-congestion state after, further comprise:

Return step a.

In addition, congested control timer and congested control duration are set, between step B and step C, this method further comprises:

BC1, judge whether to have started congested control timer, if start, execution in step BC2 then; Otherwise, start congested control timer, return step a;

BC2, judge whether congested control timer has surpassed congested control duration, if surpass, execution in step C then; Otherwise, return step a;

Among the step B, further comprise: after definite HSDPA channel was in non-congestion state, congested control timer resetted.

Wherein, described definite boundary sequence number J+1 is:

Calculate successively according to the order of sequence number K from 1 to N: the power summation of the stream business of sequence number 1 to K And the power summation of the stream business of sequence number 1 to K+1

Up to calculating sequence number is that the stream business of J satisfies inequality $\underset{i=1}{\overset{J}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}\≤P_{\mathrm{SSth}}$ With $\underset{i=1}{\overset{J+1}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}>P_{\mathrm{SSth}}$ Then stop to calculate, determine that the boundary sequence number is J+1;

Wherein, P _SSthBe the Power Limitation thresholding that is provided with; P _{SS, i}For sequence number is the performance number of the stream business of i.

Wherein, describedly will flow before professional J+1 switches to the DCH channel to N to the request of DCH access control module, further comprise: whether the power of judging the stream business of sequence number from J+1 to N respectively is more than or equal to the Power Limitation value of DCH channel, if greater than words, then do not ask and should the stream business switch to the DCH channel, and according to P _{SS, i}Suitably adjust, the one or more stream business in the stream business between the sequence number 1 to J is switched to the DCH channel.

The method of a kind of monitoring flow service congestion in high-speed downlink packet accessing channel provided by the present invention, this method judges according to the size of the total power value that obtains whether the HSDPA channel is in congestion state by obtaining the total power value on the HSDPA channel.Method provided by the present invention can take place when congested at the HSDPA channel, determines that in time the HSDPA channel is in congestion state, and then in time starts the congestion control mechanism of HSDPA channel.In addition, the present invention also provides the mechanism of some congested controls, so that congested in the generation of HSDPA channel, the congestion condition on releasing in time or the alleviation HSDPA channel.

Description of drawings

Fig. 1 is for determining the flow chart of HSDPA channel congestion state among the present invention;

Fig. 2 is the flow chart of congestion control mechanism among the present invention.

Embodiment

Core concept of the present invention is: because that the power index of HSDPA channel can reflect whether the HSDPA channel takes place is congested, taking place under the congested situation, it is not enough that the power index of HSDPA channel shows as available horsepower; Therefore in the present invention by judgement, determine whether the HSDPA channel is in congestion state to HSDPA channel power size.

For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.

Congested in order to determine whether the HSDPA channel takes place, at first, Power Limitation thresholding P must be set _SSth, with the gross power and the P of bearer service on the HSDPA channel _SSthCompare, the gross power of bearer service is greater than P on the HSDPA channel _SSth, then the HSDPA channel is in congestion state; If the gross power of bearer service is not more than P on the HSDPA channel _SSth, then the HSDPA channel is not in congestion state.P _SSthThe concrete size of value can be according to the total power value P of high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH) _HSPDSCHDetermine P _SSthShould be not less than P _HSPDSCHWherein, the HS-PDSCH channel is the physical channel that specifically is used for carrying data in the HSDPA channel.

Again since congested be burst, at random, therefore congested monitoring periods must be set, periodically monitor the HSDPA channel and whether take place congested.

Simultaneously, for fear of instability owing to HSDPA channel or system, and careless judgement HSDPA channel is in congestion state, cause the follow-up congestion control mechanism of frequent starting, therefore congested control timer and congested control duration need be set in RNC, when the HSDPA channel is in congestion state and arrives congested control duration, judge that just the HSDPA channel is in congestion state.Here, the size of congested control duration can be specifically definite according to traffic model, such as, the duration of a call in the traffic model, variance etc.

The specific implementation process of present embodiment method is as described in Figure 1:

Step 101: whether the congested monitoring periods that radio network controller (RNC) real-time judge sets in advance arrives, if arrive, then execution in step 102; Otherwise, continue execution in step 101.

Step 102～103: when congested monitoring periods arrived, RNC collected the professional power information of each stream that has inserted on the HSDPA channel; And according to

Calculate on the current HSDPA channel the professional gross power of all streams, wherein N is the number of incoming stream business on the HSDPA channel, P _{SS, i}For sequence number is the performance number of the stream business of i.

Here, RNC collects the professional power information of each stream that has inserted on the HSDPA channel, is to obtain according to the content that NodeB reports in the public-measurement report of RNC.

Step 104: judge current calculating

Whether greater than the P that sets in advance _SSthIf, greater than, then execution in step 106; Otherwise, execution in step 105.

Step 105: determine that current HSDPA channel is in non-congestion state, the congested control timer that resets simultaneously returns step 101.Here, even also be not activated the congested control timer of setting,, also carry out the operation of the congested control timer that resets for the unification of flow process.

Step 106: judge whether to have started congested control timer, if started congested control timer, then execution in step 108; Otherwise, execution in step 107.

Step 107: start congested control timer, return step 101.

Step 108: judge whether congested control timer has surpassed congested control duration, if then execution in step 109: otherwise, return step 101.

Step 109: determine that current HSDPA channel is in congestion state.

So far, determine in the present embodiment whether congested method finishes the HSDPA channel.

In the present embodiment, also congested monitoring periods can be set, and in the time need monitoring, again the stream business on the HSDPA channel be monitored the stream business on the HSDPA channel, so in this case, then step 101 can be saved and direct execution in step 102.

In the present embodiment, congested control timer and corresponding congested control duration also can be set, but in step 104, when judgement obtained on the current HSDPA channel all and flows professional gross power greater than the Power Limitation thresholding, directly execution in step 109 determined that current HSDPA channels are in congestion state.

After having determined the HSDPA channel congestion, then can start the congestion control mechanism under the HSDPA channel congestion state as required.Congestion control mechanism under the HSDPA channel congestion state can be HSDPA to be gone up the one or more stream business of carrying switch to dedicated channel (DCH).Here, take place can adopt jamming control method as shown in Figure 2 under the congested situation, be described in detail as follows at the HSDPA channel:

Step 201:, the stream business is arranged according to the ascending order from 1 to N according to the size of all stream service priority power on the HSDPA channel.

Step 202: calculate successively according to the order of sequence number K from 1 to N: the power summation of the stream business of sequence number 1 to K, promptly

And the power summation of the stream business of sequence number 1 to K+1, promptly Up to calculating a certain sequence number is that the stream business of J satisfies inequality $\underset{i=1}{\overset{J}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}\≤P_{\mathrm{SSth}}$ With $\underset{i=1}{\overset{J+1}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}>P_{\mathrm{SSth}},$ Then stop to calculate, determine that sequence number J+1 is the boundary sequence number.

Determine the process of boundary sequence number from step 202, be easy to learn that the characteristic that boundary sequence number J+1 is had is: the sequence number 1 before this sequence number to the power summation of the stream business of J correspondence smaller or equal to the Power Limitation thresholding that is provided with; And in case on the power summation of the stream business of sequence number 1 to J correspondence, add the professional power of the pairing stream of sequence number J+1, the gross power that calculates has then surpassed the Power Limitation thresholding that is provided with, if when therefore carrying sequence number 1 to J+1 pairing stream is professional on the HSDPA channel, must make the HSDPA channel be in congestion state.

Here, determining the method for boundary sequence number J+1, can also be whether the stream business that adopts the method for any traversal to calculate sequence number 1 to N respectively satisfies $\underset{i=1}{\overset{J}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}\≤P_{\mathrm{SSth}}$ With $\underset{i=1}{\overset{J+1}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}>P_{\mathrm{SSth}},$ Satisfy $\underset{i=1}{\overset{J}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}\≤P_{\mathrm{SSth}}$ With $\underset{i=1}{\overset{J+1}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}>P_{\mathrm{SSth}}$ The professional pairing sequence number of the stream of two conditions is boundary sequence number J+1.

Wherein, determine that boundary sequence number J+1 also can calculate according to certain rules, determine, such as: can calculate sequence number earlier is the stream business of odd number, judge wherein whether there is the stream business that satisfies condition, under the situation of the stream business that does not satisfy condition, be that the stream business of even number is calculated to sequence number again; Perhaps earlier calculating sequence number is the stream business of even number, judges wherein whether there is the stream business that satisfies condition, and under the situation of the stream business that does not satisfy condition, is that the stream business of odd number is calculated to sequence number again.Determine that the professional pairing sequence number of the stream that satisfies condition is boundary sequence number J+1.

Step 203:RNC switches to the DCH channel with sequence number J+1 to the stream business of N; And the stream business of sequence number 1 to J is retained in the HSDPA channel, continue to use the HSDPA channel resource.

Because $\underset{i=1}{\overset{J}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}\≤P_{\mathrm{SSth}}$ The gross power of stream business that has guaranteed sequence number 1 to J is smaller or equal to P _SSth, i.e. Power Limitation thresholding, therefore, after sequence number J+1 was switched to the DCH channel to the stream business of N, the HSDPA channel was just no longer congested, has solved the state of HSDPA channel congestion.

In addition, consider that the HSDPA channel is a channel with sharing characteristic, under the not congested state of HSDPA channel, the stream business of carrying on the HSDPA channel is many more, and the efficient of HSDPA channel is just high more.

Therefore, in step 203, can sequence number J+1 be directly switch on the DCH channel to the stream business of N yet, but to DCH access control module, sequence number J+1 is switched on the DCH channel to the stream business of N as the DCH access control module request in RNC, after DCH access control module is returned request results, request results and the current congestion state of HSDPA channel that returns according to DCH again, whether decision switches to the DCH channel with sequence number J+1 to the stream business of N, the more stream of carrying is professional, specific as follows described under not congested state as much as possible:

Need a period of time owing to insert the DCH channel to formally switching to the DCH channel, so in the meantime, because the professional continuous end of stream, congested HSDPA channel becomes the free time relatively originally from the HSDPA channel from request.When RNC receives that whenever DCH access control module is returned the request results message of switching at certain first-class professional agreement, then according to the size of HSDPA channel idle, guaranteeing under the not congested once more prerequisite, this stream business of preparing to switch to the DCH channel originally is being retained on the HSDPA; When receiving that DCH access control module is returned the request results message of refusal switching, just no longer adhere to the pairing stream business of refusal access is switched on the DCH channel.The reason of doing like this be because: keep the stream business be not allowed to switch to the DCH channel and might make the HSDPA channel be in congestion state again, if but can not successfully the stream business be switched, can have a strong impact on quality of services for users, make the user use the professional service quality of stream will can not get ensureing.In order to ensure quality of services for users, when switching the stream business, guarantee success rate for switching as far as possible.

In addition, consider and with the professional successful switch of stream to the necessary condition of DCH channel be: the power of preparing to switch to the stream business of DCH channel must be less than the Power Limitation value of DCH channel, that is to say, if the professional power of stream is more than or equal to the Power Limitation value of DCH channel, success will follow certainly when should the stream business switching to the DCH channel.Therefore, before preparation switches to the DCH channel with the stream business, can further include, whether the power of judging the stream business of sequence number from J+1 to N respectively is more than or equal to the Power Limitation value of DCH channel, if greater than, then should the stream business not switch to the DCH channel, and can be according to P _{SS, i}Suitably adjust, the one or more stream business in the stream business between the sequence number 1 to J is switched to the DCH channel.

For example, suppose that the stream business has 6, sequence number described in present embodiment is that the stream business of J+1 is 4, and sequence number is that the performance number of 5 and 6 stream business is all greater than the Power Limitation value of DCH channel, in this case, can keep sequence number and be 5 and 6 stream business, and be that 1,2 and 3 stream business switches to the DCH channel sequence number, keeping sequence number at the HSDPA channel is that 5 and 6 streams are professional, because the power summation of 5 and 6 stream business is less than P _SSth, and sequence number is that the professional performance number of 1,2,3 and 4 streams is all less than the Power Limitation value of DCH channel.

Under the prerequisite that takes into full account quality of services for users and DCH channel handover success rate, in the present embodiment, can also adopt following method: after step 202, obtain the professional J+1 of stream, and will flow professional J+1 and switch to the DCH channel.Because stream professional 0 to J satisfies $\underset{i=1}{\overset{J}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}\≤P_{\mathrm{SSth}},$ Therefore they have good channel condition and take power on the HSDPA channel; And it is all big than the required power of the professional J+1 of stream to N to flow professional J+2, switch to the DCH channel if will flow professional J+2 to a stream business among the N, from the statistical significance, reduced DCH channel success rate for switching, be unfavorable for guaranteeing client's service quality and reduce system's time delay; Therefore select to flow professional J+1 and switch to the DCH channel.To flow professional J+1 and switch on the DCH channel,, guarantee the reliability of quality of services for users and HSDPA channel to a certain extent though do not solve the congestion problems of HSDPA channel fully.Certainly, also the professional J+2 of stream can be switched to the DCH channel to a stream business among the N here; Perhaps the professional J+1 of stream can also be switched to the DCH channel to the stream business arbitrarily among the N.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims (6)

1, a kind of method of high-speed downlink packet access HSDPA channel upper reaches traffic congestion monitoring is characterized in that the Power Limitation thresholding is set, and this method may further comprise the steps:

A, collect on the HSDPA channel power information of incoming stream business;

B, calculating and judge on the HSDPA channel all the gross power of incoming stream business whether greater than the Power Limitation thresholding, if, execution in step C; Otherwise, determine that the HSDPA channel is current and be in non-congestion state;

C, determine that the HSDPA channel is in congestion state;

D, stream business that the HSDPA channel has been inserted are arranged according to the ascending order from 1 to N according to watt level;

E, definite sequence number J+1 that demarcates, boundary sequence number J+1 satisfies: the stream service power summation of sequence number 1 to J arrives the stream service power summation of J+1 greater than the Power Limitation thresholding that is provided with smaller or equal to the Power Limitation thresholding and the sequence number 1 of setting;

F1, will flow professional J+1 to the request of DCH access control module and switch to the DCH channel to N; Described DCH access control module is handled the professional access request of each stream respectively, for the professional access request of each stream provides the access judgement, returns request results message;

F2, judge whether the request results message of returning at each request is to agree to switch, if, execution in step F3 then; Otherwise, the pairing stream business of request results message is retained on the HSDPA channel, finish current handling process;

F3, judge whether current HSDPA channel is in congestion state, if then the pairing stream business of request results message is switched to the DCH channel; Otherwise, the pairing stream business of request results message is retained on the HSDPA channel.

2, method according to claim 1 is characterized in that, in the steps A, on the described collection HSDPA channel the power information of incoming stream business be:

The public information that reports according to NodeB is collected on the HSDPA channel power information of incoming stream business.

3, method according to claim 1 is characterized in that, congested monitoring periods is set, and further comprises before steps A:

A, judge whether congested monitoring periods arrives, if arrive, execution in step A then; Otherwise, continue execution in step a;

Among the step B, definite HSDPA channel is current be in non-congestion state after, further comprise:

Return step a.

4, method according to claim 3 is characterized in that, congested control timer and congested control duration are set, and between step B and step C, this method further comprises:

BC1, judge whether to have started congested control timer, if start, execution in step BC2 then; Otherwise, start congested control timer, return step a;

BC2, judge whether congested control timer has surpassed congested control duration, if surpass, execution in step C then; Otherwise, return step a;

Among the step B, further comprise: after definite HSDPA channel was in non-congestion state, congested control timer resetted.

5, method according to claim 1 is characterized in that, described definite boundary sequence number J+1 is:

Calculate successively according to the order of sequence number K from 1 to N: the power summation of the stream business of sequence number 1 to K And the power summation of the stream business of sequence number 1 to K+1

Up to calculating sequence number is that the stream business of J satisfies inequality $\underset{i=1}{\overset{J}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}\≤P_{\mathrm{SSth}}$ With $\underset{i=1}{\overset{J+1}{\mathrm{\Σ}}}{P}_{\mathrm{SS},i}>P_{\mathrm{SSth}}$ Then stop to calculate, determine that the boundary sequence number is J+1;

Wherein, P _SSthBe the Power Limitation thresholding that is provided with; P _{SS, i}For sequence number is the performance number of the stream business of i.

6, according to each described method in the claim 1 to 5, it is characterized in that, describedly will flow before professional J+1 switches to the DCH channel to N to the request of DCH access control module, further comprise: whether the power of judging the stream business of sequence number from J+1 to N respectively is more than or equal to the Power Limitation value of DCH channel, if greater than words, then do not ask and should the stream business switch to the DCH channel, and according to P _{SS, i}Suitably adjust, the one or more stream business in the stream business between the sequence number 1 to J is switched to the DCH channel.

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