CN1756408A - Method for adjusting dynamic channel in time-division multiplex CDMA access system - Google Patents

Abstract

The invention relates to a dynamic channel adjustment method in TDM-SCDMA access system. Wherein, periodic measuring and updating the up-down load measurement value, comparing the measured value with predetermined high-low threshold value to decide whether exists trigger channel adjustment situation; according to unbalance of time slot and load severity, dynamic adjusting the most adjustable user channel in up/down time slot over threshold value to another time slot with lower threshold. This method can decreases unbalance and increases service quality.

Description

Dynamic channel adjusting method in a kind of time division multiplex code division multiple access system

Technical field

The present invention relates to the method for adjustment of channel in a kind of connecting system of moving communicating field, particularly relate to a kind of method of adjusting of distributing at the dynamics of channels in the time division multiplex code division multiple access system in the 3G (Third Generation) Moblie.

Background technology

In the 3-G (Generation Three mobile communication system) of tdd CDMA, physical channel all identifies by carrier frequency/combination of spreading codes.Be the example explanation with the TD-SCDMA TD-SCDMA system below.In TD-SCDMA, every 10ms is a frame on the carrier frequency of each appointment, each frame is divided into two subframes again, the structure of two subframes is identical, be divided into 7 conventional time slots and 3 special time slots in each subframe again, user's business datum all is carried on the conventional time slot, as shown in Figure 1, on these 7 conventional time slots, carry out the differentiation of physical channel by orthogonal variable frequency extension factor code (OVSF) again, so be also referred to as channel code.Ovsf code is used C usually _{SF, i}Identify, wherein SF represents spreading factor, and i is illustrated in i sign indicating number on this SF layer.In TD-SCDMA, the operable SF of ascending time slot is 1,2,4,8,16, and descendingly can use 1 and 16.The channel code that the relative spreading factor of the channel code that spreading factor is little is big can carry the bigger business of data transfer rate.The channel of a carrier frequency like this/channel code sign just is a physical channel.In Fig. 1, expression be that certain user has taken the C of time slot 2 (TS2) at up direction _4,1A physical channel, and down direction has used the C of TS4 _16,5To C _16,84 physical channels.

Time division multiplexing (TDD) CDMA access system for the frequency division multiplexing CDMA access system owing to increased the resource of this one dimension aspect of time slot, make this system possess more resources employment methods flexibly, such as can be at the number of following professional up-downgoing asymmetry flexible configuration uplink and downlink timeslot.But when bringing flexibility to resource distribution, also produced some new problems, the system that makes implements needs the factor of consideration more, realizes also becoming relative complex.As shown in Figure 2, system is moving for a long time, and the serious unbalanced situation of resource occupation between time slot can take place.To have only a user be 16 channelization code resource taking a SF to TS5 in the drawings, and TS4 by too much CU too much channelization code resource.Since the TS4 resource to take situation serious, thereby user emission power and interference on this time slot are increased the weight of, system loading increases.At this moment because the characteristic of CDMA, user or the service quality of existing business is descended, increases such as the error rate, or when serious even service disconnection takes place.TS5 but also has a lot of resources not use.

Summary of the invention

The technical problem to be solved in the present invention is to provide dynamic channel adjusting method in a kind of time division multiplex code division multiple access system, can reduce and eliminate the disequilibrium of resource load between time slot, improves quality of services for users and effective utilization rate of resource.

To achieve these goals, the invention provides dynamic channel adjusting method in a kind of time division multiplex code division multiple access system, its characteristics are, the measuring amount that reflects the load condition of up and/or down direction system by periodic measurement and renewal, and with the high value thresholding of resulting measuring amount with each measuring amount of presetting, the low value thresholding compares, trigger at needs under the situation of channel adjustment, channel to up and/or down direction is dynamically adjusted, and will be adjusted to up/descending time slot that another is lower than this low value thresholding above the dynamics of channels in the up/descending time slot of this high value thresholding.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are that the adjustment of this method on up direction comprises the steps:

Step 1a, periodically the reception total wideband power RTWP with the ascending time slot that measures is updated in the local storage;

Step 1b, upgrade after the measuring amount all at every turn with the reception total wideband power RTWP of each ascending time slot with.The high value of the reception total wideband power of default ascending time slot thresholding RTWP _{H_threshold}, receive total wideband power low value thresholding RTWP _{L_threshold}Compare, judge that up channel adjusts the trigger condition of flow process and whether set up,, otherwise only continue the action that measuring amount is upgraded if set up then carry out next step;

Step 1c carries out the adjustment process and the end of up channel.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are that the adjustment of this method on down direction comprises the steps:

Step 2a, periodically the transmission carrier power TCP with the descending time slot that measures is updated in the local storage;

Step 2b upgrades after the measuring amount the high value thresholding of the emission carrier power TCP with default descending time slot with the transmission carrier power TCP of each descending time slot at every turn _{H_threshold}, emission carrier power low value thresholding TCP _{L_threshold}Compare, judge that down channel adjusts the trigger condition of flow process and whether set up,, otherwise only continue the action that measuring amount is upgraded if set up then carry out next step;

Step 2c carries out the adjustment process and the end of down channel.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are, when this method is adjusted on the uplink and downlink direction simultaneously, also comprise the steps:

Step 3a judges whether that up, descending trigger condition sets up simultaneously, if then carry out next step, otherwise execution in step 3e;

Step 3b calculates and the judgement formula With Magnitude relationship, if the latter represents that greater than the former descending situation is more serious, need priority treatment, then jump to step 3d, if the latter less than the former, the expression uplink situation more serious, need priority treatment, then execution in step 3c; RTWP wherein _iThe current measured value of representing the reception total wideband power of i time slot, TCP _iThe current measured value of representing the emission carrier power of i time slot;

Step 3c carries out the adjustment process and the end of up channel;

Step 3d carries out the adjustment process and the end of down channel;

Step 3e judges whether only to have up condition to trigger, if then jump to step 3c, if not, expression has only descending condition to trigger, then execution in step 3d.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are that this judges that the method whether trigger condition of upstream or downstream channel adjustment flow process is set up is:

The reception total wideband power RTWP that monitors an ascending time slot when measurement is greater than the high value thresholding of the reception total wideband power of setting RTWP _{H_threshold}, and monitor the reception total wideband power low value thresholding RTWP of the reception total wideband power RTWP of another one ascending time slot simultaneously less than setting _{L_threshold}The time, then trigger the channel adjustment process of up direction;

When the emission carrier power TCP that measures a descending time slot of monitoring is worth thresholding TCP greater than the emission carrier power height of setting _{H_threshold}, and monitor the emission carrier power low value thresholding TCP of the emission carrier power TCP of another one descending time slot simultaneously less than setting _{L_threshold}The time, then trigger the channel adjustment process of down direction.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are that the channel adjustment process of this up direction further comprises:

Step 5a, according to ${\mathrm{RSCP}}_i=\underset{j=1}{\overset{N_i}{\mathrm{\Σ}}}\underset{k=1}{\overset{N_j}{\mathrm{\Σ}}}{\mathrm{RSCP}}_{\mathrm{ijk}}$ All take the received signal code power sum RSCP of code channel to calculate the i time slot _i, RSCP wherein _IjkRepresent the received signal code power of k code channel of j CU of i time slot, Nj represents the code channel number of j user at this Time Slot Occupancy, and Ni represents number of users in i the time slot, RSCP _iAll take the received signal code power sum of code channel expression i time slot; And according to α _i=(RTWP _i/ RSCP _i) calculate this i time slot and receive total wideband power RTWP _iWith received signal code power RSCP _iRatio cc _iAnd according to $\mathrm{\α}=\frac{\underset{i=1}{\overset{\mathrm{Nults}}{\mathrm{\Σ}}}{\mathrm{\α}}_i}{\mathrm{Nults}}$ Calculate all ascending time slot α _iAverage alpha;

Step 5b judges whether to exist the user of non-real-time service, if exist then carry out next step; Otherwise execution in step 5f;

Step 5c is according to α RSCP _IjNear (RTWP _i-RTWP _mThe principle of)/2 seeks the user that optimum is adjusted, wherein RTWP in the non-real-time service user _mThe reception total wideband power of the purpose time slot m of expression channel adjustment;

Step 5d is according to α RSCP _Ij+ RTWP _mThe reception total wideband power RTWP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, if less than would carry out next step, otherwise execution in step 5f;

Step 5e returns user to be adjusted, carries out channel adjustment, and the channel adjustment among the ascending time slot i that this user need be adjusted is to up time slot m, and successfully finishes;

Step 5f is according to α RSCP _IjNear (RTWP _i-RTWP _mThe principle of)/2 seeks the user that optimum is adjusted in the real time business user;

Step 5g is according to α RSCP _Ij+ RTWP _mThe reception total wideband power RTWP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, and if less than execution in step 5e otherwise show and adjust improperly, return failure.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are that this descending adjustment process further comprises:

Step 6a, according to $\mathrm{TCode}{P}_i=\underset{j=1}{\overset{N_i}{\mathrm{\Σ}}}\underset{k=1}{\overset{N_j}{\mathrm{\Σ}}}\mathrm{TCode}{P}_{\mathrm{ijk}}$ All take the transmitter code power sum TCodeP of code channel to calculate the i time slot _i, TCodeP wherein _IjkRepresent the transmitter code power of k code channel of j CU of i time slot, Nj represents the code channel number of j user at this Time Slot Occupancy, and Ni represents number of users in i the time slot, TCodeP _iAll take the transmitter code power sum of code channel expression i time slot; And according to β _i=(TCP _i/ TCodeP _i) calculate this i time slot emission carrier power TCP _iRatio beta with transmitter code power _iAnd according to $\mathrm{\β}=\frac{\underset{i=1}{\overset{\mathrm{Ndlts}}{\mathrm{\Σ}}}{\mathrm{\β}}_i}{\mathrm{Ndlts}}$ Calculate all descending time slot β _iAverage β;

Step 6b judges whether to exist the user of non-real-time service, if exist then carry out next step, otherwise execution in step 6f;

Step 6c is according to β TCodeP _IjNear (TCP _i-TCP _mThe principle of)/2 seeks the user that optimum is adjusted, wherein TCP in the non-real-time service user _mThe emission carrier power of the purpose time slot m of expression channel adjustment;

Step 6d is according to β TCodeP _Ij+ TCP _mThe emission carrier power TCP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, if less than would carry out next step, otherwise execution in step 6f;

Step 6e returns user to be adjusted and carries out channel adjustment, and the channel adjustment among the descending time slot i that this user need be adjusted is to descending time slot m, and successfully finishes;

Step 6f is according to β TCodeP _IjNear (TCP _i-TCP _mThe principle of)/2 is sought the user that optimum is adjusted in the real time business user;

Step 6g is according to β TCodeP _Ij+ TCP _mThe emission carrier power TCP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, and if less than execution in step 6e otherwise show and adjust improperly, return failure.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are that this method is only adjusted a user at every turn.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are, dynamic channel adjustment process to a plurality of users can be decomposed into several unique user dynamic channel adjustment, after having adjusted a user, if the load of time slot still is higher than given threshold value, then in current time slots, continues to seek suitable user and adjust with same method.

Dynamic channel adjusting method in the above-mentioned time division multiplex code division multiple access system, its characteristics are that described high value thresholding, low value thresholding are determined to draw in emulation and actual measurement.

By method of the present invention, can solve preferably in the time division multiplex code division multiple access system because the serious disequilibrium of resource and load between the time slot, cause quality of services for users decline in the serious time slot of load, and the idle problem of the light time slot of load.The present invention also considers the difference of customer service, the non-real-time service user is to the insensitive characteristics of time delay, preferentially the non-real-time service user is adjusted, consider implementation complexity simultaneously, once only adjust a user usually, can eliminate the time-slot load disequilibrium preferably like this, can reduce implementation complexity again, and influence few user that tries one's best adjusts.

Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.

Description of drawings

Fig. 1 is a physical channel key diagram in the existing TD-SCDMA system;

Fig. 2 is that each time interval resource takies asynchronous situation map in the existing TD-SCDMA system;

Fig. 3 is that ascending time slot RTWP of the present invention surpasses the thresholding schematic diagram;

Fig. 4 is the channel adjustment flow chart that the present invention is based on balanced load power;

Fig. 4 A is the concrete up direction channel adjustment of a present invention flow chart;

Fig. 4 B is the concrete down direction channel adjustment of a present invention flow chart;

Fig. 5 is that code channel takies situation before adjusting in one embodiment of the invention;

Fig. 6 is the situation of each time slot RTWP before adjusting in one embodiment of the invention;

Fig. 7 adjusts the back code channel to take situation in one embodiment of the invention;

Fig. 8 is a situation of adjusting each time slot RTWP of back in one embodiment of the invention.

Embodiment

Before the description of carrying out the inventive method, parameter and the notion to needs describes as follows earlier:

The enforcement of method of the present invention needs closely to rely on the measurement with physical layer, so at first introduce explanation and several predefine value of the measuring amount that several needs use.Because the measuring amount of up-downgoing is inequality, narration respectively below.

At up direction, what mainly use is to reflect the load condition of up direction system at reception total wideband power " the ReceivedTotal Wind Band Power " RTWP that the place, base station is measured.Owing to the disequilibrium and the time-slot load order of severity that need to distinguish between the time slot, need to set two threshold value: RTWP in addition _{H_threshold}, receive the high value of total wideband power thresholding, when the RTWP of time slot to be measured surpasses this thresholding, represent that load is serious, need to consider to other time slot adjustment; RTWP _{L_threshold}, receiving total wideband power low value thresholding, the RTWP that measures when this time slot is less than this thresholding, and the RTWP that time slot arranged is greater than RTWP _{H_threshold}, will consider adjustment to this time slot.

The current measured value RTWP that needs each ascending time slot simultaneously _i(the reception total wideband power of i time slot), and in the time slot in each user's received signal code power " Received Signal Code Power " RSCP and the time slot user's statistics tabulation, each user at the shared code channel of this time slot.

Definition in addition

${\mathrm{RSCP}}_i=\underset{j=1}{\overset{N_i}{\mathrm{\Σ}}}\underset{k=1}{\overset{N_j}{\mathrm{\Σ}}}{\mathrm{RSCP}}_{\mathrm{ijk}}---\left(1\right)$

α _i＝(RTWP _i/RSCP _i) (2)

$\mathrm{\α}=\frac{\underset{i=1}{\overset{\mathrm{Nults}}{\mathrm{\Σ}}}{\mathrm{\α}}_i}{\mathrm{Nults}}---\left(3\right)$

More than RSCP in several formula _IjkRepresent the received signal code power of k code channel of i CU of i time slot, Nj represents the code channel number of j user at this Time Slot Occupancy, and Ni represents number of users in i the time slot, so RSCP _iAll take the received signal code power sum of code channel expression i time slot; α _iThe ratio of just representing this time slot RTWP and received signal code power; α is to all ascending time slot α _iAverage.

At down direction, what mainly use is to weigh the load of down direction system at emission carrier power " TransmitCarrier Power " TCP that the place, base station is measured.Owing to the disequilibrium and the time-slot load order of severity that need to distinguish between the time slot, need to set two threshold value: TCP in addition _{H_threshold}, the high value of emission carrier power thresholding when the TCP of time slot to be measured surpasses this thresholding, represents that load is serious, needs to consider to other time slot adjustment; TCP _{L_threshold}, emission carrier power low value thresholding, the TCP that measures when this time slot be less than this thresholding, and the TCP that time slot arranged is greater than TCP _{H_threshold}, will consider adjustment to this time slot.

The current measured value TCP that needs each descending time slot simultaneously _i(the emission carrier power of i time slot), and in the time slot in each user's yard power that transmits " Transmitted Code Power " TCodeP and the time slot user's statistics tabulation, each user at the shared code channel of this time slot.

Definition in addition

$\mathrm{TCode}{P}_i=\underset{j=1}{\overset{N_i}{\mathrm{\Σ}}}\underset{k=1}{\overset{N_j}{\mathrm{\Σ}}}\mathrm{TCode}{P}_{\mathrm{ijk}}---\left(4\right)$

β _i＝(TCP _i/TCodeP _i) (5)

$\mathrm{\β}=\frac{\underset{i=1}{\overset{\mathrm{Ndlts}}{\mathrm{\Σ}}}{\mathrm{\β}}_i}{\mathrm{Ndlts}}---\left(6\right)$

More than in several formula i represent the time slot of excess load, j represents to meet in this time slot the user of adjustment standard, m represents the purpose time slot adjusted, is about to user j in the i time slot and adjusts in the m time slot and remove TCodeP _IjkRepresent the transmitter code power of k code channel of j CU of i time slot, Nj represents the code channel number of j user at this Time Slot Occupancy, and Ni represents number of users in i the time slot, so TCodeP _iAll take the closing of transmitter code power of code channel expression i time slot; β _iThe ratio of just representing this time slot TCP and transmitter code power; β is to all descending time slot β _iAverage.

Core concept of the present invention is the same to provisional capital up and down, and only above below behavior example is sketched, not as limitation of the present invention.As shown in Figure 3, the RTWP that monitors certain ascending time slot when measurement is greater than the thresholding RTWP that sets _{H_threshold}, and monitor the thresholding RTWP of the RTWP of another one ascending time slot simultaneously less than setting _{L_threshold}, will trigger the channel adjustment flow process.Need in emulation and actual measurement, rationally determine for above-mentioned two threshold values.Under the prerequisite that satisfies the adjustment requirement, want the least possible adjustment user, and will consider user's class of business.Only has the user of non-real-time service so can from the user of the serious time slot of time-slot load, inquire about earlier when the present invention adjusts, if the user who does not have the user of non-real-time service to search real time business again.Seek α RSCP when in similar user, determining _IjNear (RTWP _i-RTWP _mThe user of)/2 adjusts, and the RTWP of that time slot estimates after will adjusting over to this user after finding this user, and is full of RTWP _{H_threshold}Can carry out, otherwise not adjust.

Below in conjunction with Fig. 4, Fig. 4 A, Fig. 4 B method of the present invention is elaborated.

As shown in Figure 4, show the channel adjustment flow process based on balanced load power of the present invention, it has comprised the situation that up direction and down direction are measured simultaneously, but, the present invention also can only measure on up direction or down direction, and this is not equally as limitation of the present invention.Among the figure, this adjustment flow process comprises:

Step 401 periodically is updated to the RTWP of the ascending time slot that measures and the TCP of descending time slot in the local storage;

Step 402, all the RTWP of each ascending time slot, TCP and high value, the low value thresholding of descending time slot are compared after each renewal measuring amount, judge whether to exist the situation that triggers channel adjustment, if just do not do nothing, continue the renewal of measuring amount, if having trigger condition to set up then carry out next step (step 403);

Step 403 judges whether that the situation of up-downgoing trigger condition establishment is set up simultaneously, if then carry out next step (step 404), otherwise execution in step 407,

Step 404 is calculated and the judgement formula

With

Magnitude relationship, if the latter represents that greater than the former descending situation is more serious, need priority treatment, then jump to step 406, if the latter less than the former, the expression uplink situation more serious, need priority treatment, then execution in step 405;

Step 405 is carried out the adjustment process of up channel and is finished the narration of specifically seeing below;

Step 406 is carried out the adjustment process of down channel and is finished the narration of specifically seeing below;

Step 407 judges whether only to have up condition to trigger, if then jump to step 405, if not, expression has only descending condition to trigger, and then execution in step 406.

Shown in Fig. 4 A, show up adjustment flow process concrete among the present invention, further the comprising of up adjustment in the above-mentioned steps:

Step 501 is calculated the ratio cc of RTWP and RSCP according to the mode of mentioning in the preamble;

Step 502 judges whether to exist the user of non-real-time service, if exist then the following step (step 503) of execution; Otherwise execution in step 506,

Step 503 is according to α RSCP _IjNear (RTWP _i-RTWP _mThe principle of)/2 seeks the user that optimum is adjusted in the non-real-time service user;

Step 504 is according to α RSCP _Ij+ RTWP _mWhether the RTWP of this time slot judges it less than high value thresholding after obtaining the user and adjusting over, if less than would carry out next step (step 505); Otherwise execution in step 506;

Step 505 is returned user to be adjusted, carries out channel adjustment, and the channel adjustment among the ascending time slot i that this user need be adjusted is to up time slot m, the time slot i before wherein adjusting, and adjusted time slot m, and successfully finish;

Step 506 is according to seek the user that optimum is adjusted in the real time business user with the mode of step 503;

Step 507 is according to α RSCP _Ij+ RTWP _mWhether the RTWP of this time slot less than high value thresholding after just the user was adjusted over, if less than would jump to step 505, otherwise show and adjust improperly, return failure.

Shown in Fig. 4 B, show the channel adjustment flow process of the concrete down direction of the present invention, further the comprising of descending adjustment in the abovementioned steps:

Step 601 is calculated the ratio beta of TCP and TCodeP according to the mode of mentioning in the preamble;

Step 602 judges whether to exist the user of non-real-time service, if exist then carry out next step (step 603), otherwise execution in step 606;

Step 603 is according to β TCodeP _IjNear (TCP _i-TCP _mThe principle of)/2 seeks the user that optimum is adjusted in the non-real-time service user;

Step 604 is according to β TCodeP _Ij+ TCP _mWhether the TCP of this time slot judges it less than high value thresholding after obtaining the user and adjusting over, if less than would carry out next step (step 605), otherwise execution in step 606;

Step 605 is returned user to be adjusted, carries out channel adjustment, and the channel adjustment among the descending time slot i that this user need be adjusted is to descending time slot m, the time slot i before wherein adjusting, and adjusted time slot m, and successfully finish;

Step 606 is according to seek the user that optimum is adjusted in the real time business user with the mode of step 603;

Step 607 is according to β TCodeP _Ij+ TCP _mWhether the TCP of this time slot judges it less than high value thresholding after obtaining the user and adjusting over, if less than would jump to step 605, otherwise show and adjust improperly, return failure.

Below in conjunction with the specific embodiment of the present invention shown in Fig. 5～8, clearer explanation method of adjustment of the present invention describes only to adjust a user among this embodiment.

The situation that takies of supposing present this cell uplink sign indicating number resource as shown in Figure 5, the relative threshold schematic diagram of corresponding RTWP is as shown in Figure 6.According to the judgement of thresholding is found to exist the condition that up channel is adjusted that triggers; Then, adjudicate whether there is non-real-time service user 2 on the TS2 then, suppose to have such user, and take code channel C4,3 and C8,7 according to aforementioned manner ratio calculated α; According to calculating this user α RSCP of judgement _2,2Near (RTWP ₂-RTWP ₃)/2 are so user 2 is optimum adjustment users; Then at pre-estimation time slot 3 adjusted received power α RSCP _2,2+ RTWP ₃, and judge this value and RTWP _{H_threshold}Size, find not surpass this high value thresholding, then can carry out the adjustment process of channel.Adjusted code channel takies situation as shown in Figure 7, and the situation of RTWP as shown in Figure 8.

Dynamic channel adjustment process to a plurality of users can be decomposed into several unique user dynamic channel adjustment, promptly after having adjusted a user, the load of time slot still is higher than given threshold value, then continues to seek suitable user with same method and adjust in current time slots.

By explanation to summary of the invention and concrete implementation example, can predict that this invention can solve in the time division multiplex code division multiple access system preferably since in the serious time slot of load that the serious disequilibrium of resource and load causes between the time slot QoS of customer descend, and the idle problem of the light time slot of load, thereby improve quality of services for users and effective utilization rate of resource.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (10)

1, dynamic channel adjusting method in a kind of time division multiplex code division multiple access system, it is characterized in that, the measuring amount that reflects the load condition of up and/or down direction system by periodic measurement and renewal, and high value thresholding, the low value thresholding of resulting measuring amount with default each measuring amount compared, trigger at needs under the situation of channel adjustment, channel to up and/or down direction is dynamically adjusted, and will be adjusted to up/descending time slot that another is lower than this low value thresholding above the dynamics of channels in the up/descending time slot of this high value thresholding.

2, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 1 is characterized in that, the adjustment of this method on up direction comprises the steps:

Step 1a, periodically the reception total wideband power RTWP with the ascending time slot that measures is updated in the local storage;

Step 1b upgrades after the measuring amount the high value thresholding of the reception total wideband power RTWP with default ascending time slot with the reception total wideband power RTWP of each ascending time slot at every turn _{H_threshold}, receive total wideband power low value thresholding RTWP _{L_threshold}Compare, judge that up channel adjusts the trigger condition of flow process and whether set up,, otherwise only continue the action that measuring amount is upgraded if set up then carry out next step;

Step 1c carries out the adjustment process and the end of up channel.

3, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 1 and 2 is characterized in that, the adjustment of this method on down direction comprises the steps:

Step 2a, periodically the transmission carrier power TCP with the descending time slot that measures is updated in the local storage;

Step 2b upgrades after the measuring amount the high value thresholding of the emission carrier power TCP with default descending time slot with the transmission carrier power TCP of each descending time slot at every turn _{H_threshold}, emission carrier power low value thresholding TCP _{L_threshold}Compare, judge that down channel adjusts the trigger condition of flow process and whether set up,, otherwise only continue the action that measuring amount is upgraded if set up then carry out next step;

Step 2c carries out the adjustment process and the end of down channel.

4, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 3 is characterized in that, when this method is adjusted on the uplink and downlink direction simultaneously, also comprises the steps:

Step 3a judges whether that up, descending trigger condition sets up simultaneously, if then carry out next step, otherwise execution in step 3e;

Step 3b calculates and the judgement formula $(1-\frac{\mathrm{RTW}{P}_i}{{\mathrm{RTWP}}_{h\_\mathrm{threshold}}})$ With $(1-\frac{{\mathrm{TCP}}_i}{{\mathrm{TCP}}_{h\_\mathrm{threshold}}})$ Magnitude relationship, if the latter represents that greater than the former descending situation is more serious, need priority treatment, then jump to step 3d, if the latter less than the former, the expression uplink situation more serious, need priority treatment, then execution in step 3c; RTWP wherein _iThe current measured value of representing the reception total wideband power of i time slot, TCP _iThe current measured value of representing the emission carrier power of i time slot;

Step 3c carries out the adjustment process and the end of up channel;

Step 3d carries out the adjustment process and the end of down channel;

Step 3e judges whether only to have up condition to trigger, if then jump to step 3c, if not, expression has only descending condition to trigger, then execution in step 3d.

5, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 4 is characterized in that, this judges that the method whether trigger condition of upstream or downstream channel adjustment flow process is set up is:

The reception total wideband power RTWP that monitors an ascending time slot when measurement is greater than the high value thresholding of the reception total wideband power of setting RTWP _{H_threshold}, and monitor the reception total wideband power low value thresholding RTWP of the reception total wideband power RTWP of another one ascending time slot simultaneously less than setting _{L_threshold}The time, then trigger the channel adjustment process of up direction;

When the emission carrier power TCP that measures a descending time slot of monitoring is worth thresholding TCP greater than the emission carrier power height of setting _{H_threshold}, and monitor the emission carrier power low value thresholding TCP of the emission carrier power TCP of another one descending time slot simultaneously less than setting _{L_threshold}The time, then trigger the channel adjustment process of down direction.

6, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 5 is characterized in that, the channel adjustment process of this up direction further comprises:

Step 5a, according to ${\mathrm{RSCP}}_i=\underset{j=1}{\overset{N_i}{\mathrm{\Σ}}}\underset{k=1}{\overset{N_j}{\mathrm{\Σ}}}\mathrm{RSC}{P}_{\mathrm{ijk}}$ All take the received signal code power sum RSCP of code channel to calculate the i time slot _i, RSCP wherein _IjkRepresent the received signal code power of k code channel of j CU of i time slot, Nj represents the code channel number of j user at this Time Slot Occupancy, and Ni represents number of users in i the time slot, RSCP _iAll take the received signal code power sum of code channel expression i time slot; And according to α _i=(RTWP _i/ RSCP _i) calculate this i time slot and receive total wideband power RTWP _iWith received signal code power RSCP _iRatio cc _iAnd according to $\mathrm{\α}=\frac{\underset{i=1}{\overset{\mathrm{Nults}}{\mathrm{\Σ}}}{\mathrm{\α}}_i}{\mathrm{Nults}}$ Calculate all ascending time slot α _iAverage alpha;

Step 5b judges whether to exist the user of non-real-time service, if exist then carry out next step; Otherwise execution in step 5f;

Step 5c is according to α RSCP _IjNear (RTWP _i-RTWP _mThe principle of)/2 seeks the user that optimum is adjusted, wherein RTWP in the non-real-time service user _mThe reception total wideband power of the purpose time slot m of expression channel adjustment;

Step 5d is according to α RSCR _Ij+ RTWP _mThe reception total wideband power RTWP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, if less than would carry out next step, otherwise execution in step 5f;

Step 5e returns user to be adjusted, carries out channel adjustment, and the channel adjustment among the ascending time slot i that this user need be adjusted is to up time slot m, and successfully finishes;

Step 5f is according to α RSCP _IjNear (RTWP _i-RTWP _mThe principle of)/2 seeks the user that optimum is adjusted in the real time business user;

Step 5g is according to α RSCP _Ij+ RTWP _mThe reception total wideband power RTWP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, and if less than execution in step 5e otherwise show and adjust improperly, return failure.

7, according to dynamic channel adjusting method in claim 5 or the 6 described time division multiplex code division multiple access systems, it is characterized in that this descending adjustment process further comprises:

Step 6a, according to ${\mathrm{TCodeP}}_i=\underset{j=1}{\overset{N_i}{\mathrm{\Σ}}}\underset{k=1}{\overset{N_j}{\mathrm{\Σ}}}{\mathrm{TCodeP}}_{\mathrm{ijk}}$ All take the transmitter code power sum TCodeP of code channel to calculate the i time slot _i, TCodeP wherein _IjkRepresent the transmitter code power of k code channel of j CU of i time slot, Ni represents the code channel number of j user at this Time Slot Occupancy, and Ni represents number of users in i the time slot, TCodeP _iAll take the transmitter code power sum of code channel expression i time slot; And according to β _i=(TCP _i/ TCodeP _i) calculate this i time slot emission carrier power TCP _iRatio beta with transmitter code power _iAnd according to $\mathrm{\β}=\frac{\underset{i=1}{\overset{\mathrm{Ndlts}}{\mathrm{\Σ}}}{\mathrm{\β}}_i}{\mathrm{Ndlts}}$ Calculate all descending time slot β _iAverage β;

Step 6b judges whether to exist the user of non-real-time service, if exist then carry out next step, otherwise execution in step 6f;

Step 6c is according to β TCodeP _IjNear (TCP _i-TCP _mThe principle of)/2 seeks the user that optimum is adjusted, wherein TCP in the non-real-time service user _mThe emission carrier power of the purpose time slot m of expression channel adjustment;

Step 6d is according to β TCodeP _Ij+ TCP _mThe emission carrier power TCP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, if less than would carry out next step, otherwise execution in step 6f;

Step 6e returns user to be adjusted and carries out channel adjustment, and the channel adjustment among the descending time slot m that this user need be adjusted is to descending time slot n, and successfully finishes;

Step 6f is according to β TCodeP _IjNear (TCP _i-TCP _mThe principle of)/2 is sought the user that optimum is adjusted in the real time business user;

Step 6g is according to β TCodeP _Ij+ TCP _mThe emission carrier power TCP of this time slot after obtaining the user and adjusting over, and whether judge it less than high value thresholding, and if less than execution in step 6e otherwise show and adjust improperly, return failure.

8, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 5 is characterized in that, this method is only adjusted a user at every turn.

9, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 5, it is characterized in that, dynamic channel adjustment process to a plurality of users can be decomposed into several unique user dynamic channel adjustment, after having adjusted a user, if the load of time slot still is higher than given threshold value, then in current time slots, continues to seek suitable user and adjust with same method.

10, dynamic channel adjusting method in the time division multiplex code division multiple access system according to claim 1 is characterized in that, described high value thresholding, low value thresholding are determined to draw in emulation and actual measurement.

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