CN1798005B - Method of same regional coverage in multiple subzones in TDS-CDMA system - Google Patents

Abstract

The method includes following steps: when building a sub zone, RNC adds an identifier of covering same geographic area for multiple sub zones of covering same area; Node B carries out conversion fromlocal sub zone in single carrier frequency to mixing sub zone for multiple local sub zones with same identifier; frequency hopping frame of each mixing sub zone contains down going time slot on singlecarrier frequency of all local sub zone; Node B uses maximal transmitting power covering local area as transmitting power for a mixing sub zone; and powers are degressive for other mixing sub zone; then, with time slot being as unit, carrying out frequency hopping transmitting for each frequency hopping frame based on determined power; sob zone with largest transmitting power is a broadcasting and beaconing sub zone. Advantages are: reducing interference between carriers, reducing measuring and switching number at same time by mobile terminals, and raised access capacity.

Description

The method that the multiple sectors at same time in TD-SCDMA zone covers

Technical field

The present invention relates to the wireless telecommunication system of TD-SCDMA (TD SDMA) standard, specifically, relate to a kind of method of in this system, same geographic area being carried out the covering of many sub-districts.

Background technology

TD-SCDMA (being LCR TDD) is a tdd systems, in 3GPP (The 3rdGeneration Partnership Project) standard, in the TD-SCDMA standard based on low spreading rate, each subframe comprises that 7 business time-slot TS (timeslot) add two pilot time slots, two up-downgoing transfer points, first frequency inverted point is fixed, second frequency inverted point can be adjusted according to the ratio of up-downgoing traffic carrying capacity, TS0 is fixed as descending time slot, fixed allocation broadcast channel and beacon channel on time slot TS0, TS1 is fixed as ascending time slot, distributes PRACH channel (Reverse Access Channel) on it, each subframe 5ms, frame structure as shown in Figure 1.

In the TD-SCDMA system, the definition that the sub-district is the clearest and the most definite is to launch independently TD-SCDMA frame, independently common signal channel, pilot channel and Traffic Channel are arranged, a unique local district identification (Local Cell Id) is arranged, unique UARFN (frequency identification number) is also arranged, corresponding to Node B carrier frequency processing unit.

In order to increase the traffic carrying capacity of sub-district, can adopt many sub-districts to cover same geographic area, distribute a plurality of local district identifications, many sub-districts cover can adopt co-frequency cell or alien-frequency district.For a plurality of sub-districts in the same geographic area, in present TD-SCDMA standard, the Uu interface all independently carries out at each sub-district for operation, the configuration of Radio Resource.Promptly to a plurality of sub-districts in the same geographic area, each sub-district is the complete common signal channel of separate configurations one cover separately, wherein the BCH of each sub-district (broadcast channel), FACH (forward access channel) and PCH (paging channel) are omnidirectional channel, cover whole geographic area.

UE (portable terminal) resides in which sub-district in a plurality of sub-districts in this geographic area, is that UE carries out separately according to the measurement of oneself, exists most of UE to wish to reside in the situation of same sub-district.In the overlapping region of two adjacent geographic cell, 6 of will carry out can carrying out greater than self of UE measure number simultaneously, cause UE to be difficult to differentiate measurement result.

In addition, many sub-districts coverage mode in this same geographic area, the base station requires very high to transmitter power when actual networking, phase mutual interference between carrier frequency is obvious, only reliable traffic carrying capacity hour is closed some sub-districts as far as possible or is further dwindled the geographic area of sub-district, reduce mutual interference, but can impact business.

Summary of the invention

The technical problem to be solved in the present invention provides the method that a kind of multiple sectors at same time in TD-SCDMA zone covers, and can reduce between carrier frequency to disturb, reduce mobile terminal UE and measure number of times and switching times simultaneously, improves access capacity.

In order to solve the problems of the technologies described above, the invention provides the method that a kind of multiple sectors at same time in TD-SCDMA zone covers, may further comprise the steps:

When (a) radio network controller was set up in the sub-district, the home cell that covers for multiple sectors at same added the sign that covers same geographic area, and informing base station;

(b) the base station a plurality of home cells identical to described sign carry out the one by one corresponding conversion of single carrier frequency home cell to the mixing sub-district, all comprise the descending time slot on all described home cell list carrier frequency on the frequency hopping frame of each mixing sub-district;

(c) base station is with the maximum transmission power that covers the one's respective area Initial Trans as a mixing sub-district, and the Initial Trans of other mixing sub-districts is determined by the mode of successively decreasing successively;

(d) base station is unit with the time slot, according to the transmitting power of determining the frequency hopping frame of each mixing sub-district is carried out the frequency hopping emission, and serves as broadcasting and beacon sub-district with the sub-district of transmitting power maximum;

(e) base station reports the correspondence relationship information of redistributing mixing sub-district, back and home cell.

Further, said method can have following characteristics: described step (b) further may further comprise the steps:

(b1) cell attribute is differentiated in the base station, and statistics is with the sub-district number N of coverage cell, and the ascending time slot of definite each sub-district is counted N_uCount N with descending time slot_d

(b2), make the descending time slot that has all comprised on each the mixing sub-district frequency hopping frame that obtains on all home cell list carrier frequency with the descending time slot combined crosswise of each home cell list carrier frequency;

(b3) base station according to cover same geographic area sign with the sign of home cell one by one corresponding conversion be the mixing cell ID.

Further, said method can have following characteristics: in the described step (b2), cell carrier frequencies number N equals descending time slot number N_dThe time, the form of each frequency hopping frame is as follows:

$\begin{array}{cccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_1}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-1}}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_2}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_0}\\ & & ...& & & ...& ...& ...\\ {\mathrm{HF}}_N& {\mathrm{TS}}_0^{F_{N-1}}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_0}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-2}}\end{array}$

Wherein, F₀, F₁..., F_j... F_N-1Be the carrier frequency of N home cell, press the absolute wireless frequency numbering of UTRA (wireless universal access platform) frequency numbering from low to high and arrange HF₁, HF₂..., HF_j... HF_NBe the frequency hopping frame of the mixing carrier frequency after the conversion, the subscript of TS is represented the carrier frequency of the affiliated home cell of this time slot in the formula, and following target numeral represents that then this time slot is which time slot in this carrier frequency frame.

Further, said method can have following characteristics: in the described step (b2), cell carrier frequencies number N is less than descending time slot number N_dThe time, the form of each frequency hopping frame is as follows:

$\begin{array}{cccccccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_1}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-1}}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_0}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_0}& ...& {\mathrm{TS}}_6^{F_0}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_2}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_0}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_1}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_1}& ...& {\mathrm{TS}}_6^{F_1}\\ & & ...& & & ...& ...& ...& ...& ...& ...& ...\\ {\mathrm{HF}}_N& {\mathrm{TS}}_0^{F_{N-1}}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_0}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-2}}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_{N-1}}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_{N-1}}& ...& {\mathrm{TS}}_6^{F_{N-1}}\end{array}$

Wherein, F₀, F₁..., F_j... F_N-1Be the carrier frequency of N home cell, press the absolute wireless frequency numbering of UTRA frequency numbering from low to high and arrange HF₁, HF₂..., HF_j... HF_NBe the frequency hopping frame of the mixing carrier frequency after the conversion, the subscript of TS is represented the carrier frequency of the affiliated home cell of this time slot in the formula, and following target numeral represents that then this time slot is which time slot in this carrier frequency frame.

Further, said method can have following characteristics: in the described step (c), the Initial Trans of each mixing sub-district is linear decrease successively.

Further, said method can have following characteristics: the Initial Trans of described each mixing sub-district is pressed following formula and is determined:

$P_k=\frac{N_u+N_d-k}{7}{P}_{\max }$

Wherein, P_MaxFor covering the maximum transmission power of one's respective area, P_kBe the power of N mixing sub-district being numbered k, k=0,1 ..., N-1, and the frequency hopping that is numbered the mixing sub-district correspondence of k is HF frequently_K+1, N_uBe ascending time slot number, N_dBe the descending time slot number.

Further, said method can have following characteristics: in the described step (d), the base station is standby broadcasting and beacon sub-district with second largest sub-district of transmitting power also.

Further, said method can have following characteristics: in the described step (d), the slow frequency hopping emission is carried out to described frequency hopping frame in the base station.

Further, said method can have following characteristics: also comprise step between described step (d) and the step (e): portable terminal is measured multiple carrier frequency power, radio network controller is according to the measurement result of portable terminal signal strength signal intensity or Timing Advance, in covering some mixing sub-district of this portable terminal position, with the dedicated channel priority allocation of this portable terminal on little mixing sub-district, overlay area.

Further, said method can have following characteristics: in the described step (e), the base station also reports the information of the transmitting power of the sign of active and standby broadcasting and beacon sub-district and each mixing sub-district.

Therefore, after application the inventive method, the total transmitting power in a plurality of sub-districts of same geographic area reduces, thereby can reduce the phase mutual interference between carrier frequency.Because be active and standby broadcast beacon sub-district with two mixing sub-districts wherein only, the TSo time slot of other sub-district can be used as business time-slot, thereby has enlarged the capacity of system, has eliminated the interference of minizone broadcast channel.Because in the present invention, the coverage of each mixing sub-district is descending, thereby the quantity that UE carries out cell measurement and switching in described adjacent overlapping region significantly reduces.In addition, the present invention can also overcome the Rayleigh fading of signal transmission, improves speech quality.

Description of drawings

Fig. 1 is a TD-SCDMA frame structure schematic diagram.

Fig. 2 is the flow chart of embodiment of the invention method.

Fig. 3 is the frequency hopping frame HF of first application example of the present invention₁, HF₂, HF₃, HF₄The schematic diagram of corresponding HC cell coverage area.

Embodiment

As shown in Figure 2, the present embodiment method may further comprise the steps:

Step 110, RNC (radio network controller) is when setting up in the sub-district, and the sub-district that covers for multiple sectors at same adds the sign that covers same geographic area, and notice Node B (base station);

Step 120, Node B carries out the corresponding conversion one by one that single carrier frequency home cell (being called for short the LC sub-district) (is called for short the HC sub-district) to the mixing sub-district for having a plurality of sub-districts that cover same geographic area sign according to the absolute wireless frequency numbering of UTRA;

At first, Node B differentiates cell attribute, and statistics arranges the ascending time slot of each sub-district to count N with the number N of coverage cell LC according to the downlink traffic of single carrier cell_u, and descending time slot is TS₀, TS_Nu+1..., TS_j..., TS₆, be total to N_dIndividual, N_d≤ 6.The present invention requires the sub-district to add up to N≤N_dIndividual, be numbered 0,1 ..., K ..., N-1, if desired greater than N_dPlot planning is again advised in the sub-district of individual carrier frequency.

Then, with the descending time slot combined crosswise of the single carrier frequency in each LC sub-district, obtaining the form of each HC sub-district frequency hopping frame. supposition, former N the absolute wireless frequency numbering of LC sub-district UTRA frequency numbering from low to high is followed successively by F₀, F₁..., F_j... F_N-1, corresponding respectively to of reformulation is numbered 0,1 ..., the frequency hopping frame of the HC sub-district of N-1 is HF₁, HF₂..., HF_j... HF_N, the concrete grammar of conversion is as follows:

First kind of situation, the cell carrier frequencies number equals descending time slot number, i.e. N=N_dThe time, the form of each frequency hopping frame the following is:

$\begin{array}{cccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_1}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-1}}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_2}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_0}\\ & & ...& & & ...& ...& ...\\ {\mathrm{HF}}_N& {\mathrm{TS}}_0^{F_{N-1}}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_0}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-2}}\end{array}$

Wherein, the subscript of TS represents that this time slot belongs to the carrier frequency of which LC sub-district, and subscript represents that then this time slot is which time slot in this LC cell carrier frequencies frame, for example,Expression F₂The N of carrier frequency_u+ 1 time slot, N_u+ N-1=6.

Corresponding first kind of situation is below with an application example explanation.Suppose the descending time slot number N of the major-minor carrier frequency sum N in sub-district and each single carrier frequency frame_dAll equal 4, ascending time slot is N_u=3, promptly the descending time slot on the single carrier frequency in each LC sub-district is respectively TS₀, TS₄, TS₅And TS₆At this moment, the frequency hopping frame format of HC sub-district, combination back is:

$\begin{array}{cccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_4^{F_1}& {\mathrm{TS}}_5^{F_2}& {\mathrm{TS}}_6^{F_3}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_4^{F_2}& {\mathrm{TS}}_5^{F_3}& {\mathrm{TS}}_6^{F_0}\\ {\mathrm{HF}}_3& {\mathrm{TS}}_0^{F_2}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_4^{F_3}& {\mathrm{TS}}_5^{F_0}& {\mathrm{TS}}_6^{F_1}\\ {\mathrm{HF}}_4& {\mathrm{TS}}_0^{F_3}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_4^{F_0}& {\mathrm{TS}}_5^{F_1}& {\mathrm{TS}}_6^{F_2}\end{array}$

As can be seen, frequency hopping frame HF₁By F₀TS on the carrier frequency₀Time slot and Dwpts time slot, carrier frequency F₁On TS₄Time slot is (as N_dDifference also may be the TS immediately following the descending time slot of second transfer point₂, TS₃Time slot etc.), carrier frequency F₂On TS₅Time slot, and carrier frequency F₃On TS₆Time slot.The TS of other frequency hopping frame₀Time slot is identical with the TS0 time slot of the single carrier frequency in corresponding LC sub-district, and the descending time slot of back is formed by the mode that the UARFN frequency point number increases progressively frequency.

Second kind of situation, cell carrier frequencies number be during less than the descending time slot number, i.e. N＜N_dThe time, because N_u+ N-1 is less than 6, so increased a part on the basis of first kind of situation, the form of this each frequency hopping frame of HC sub-district is as follows:

$\begin{array}{cccccccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_1}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-1}}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_0}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_0}& ...& {\mathrm{TS}}_6^{F_0}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_2}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_0}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_1}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_1}& ...& {\mathrm{TS}}_6^{F_1}\\ & & ...& & & ...& ...& ...& ...& ...& ...& ...\\ {\mathrm{HF}}_N& {\mathrm{TS}}_0^{F_{N-1}}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_0}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-2}}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_{N-1}}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_{N-1}}& ...& {\mathrm{TS}}_6^{F_{N-1}}\end{array}$

Identical under the implication of each symbol and the first kind of situation in the following formula, identical under the time slot compound mode of front and the first kind of situation for each frequency hopping frame, the time slot that the back replenishes then with this hybrid frame TS₀Other descending time slots of corresponding carrier frequency are identical, and the benefit of doing like this is not bring the frequency hopping factor into.

Corresponding second kind of situation is below with the explanation of Another application example.Suppose sub-district major-minor carrier frequency sum N=2, the descending time slot number N of each single carrier frequency frame_d=4, ascending time slot still is N_u=3, the descending time slot on the single carrier frequency in each LC sub-district is respectively TS₀, TS₄, TS₅And TS₆At this moment, the form of two frequency hopping frames of HC sub-district, combination back is as follows:

$\begin{array}{cccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_4^{F_1}& {\mathrm{TS}}_5^{F_0}& {\mathrm{TS}}_6^{F_0}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_4^{F_2}& {\mathrm{TS}}_5^{F_1}& {\mathrm{TS}}_6^{F_1}\end{array}$

As can be seen, frequency hopping frame HF₁By F₀TS on the carrier frequency₀Time slot and Dwpts time slot, carrier frequency F₁On TS₄Time slot, and carrier frequency F₀On TS₅, TS₆Time slot is formed.Frequency hopping frame HF₂Composition also can directly find out by following formula, repeat no more.

Need to prove, the above-mentioned mode that LC sub-district single carrier frequency descending time slot combined crosswise is obtained the frequency hopping frame is not unique, in the selection of order that makes up and time slot, also conversion can be arranged, but should guarantee all to comprise in each frequency hopping frame the descending time slot of all LC sub-districts.

At last, NodeB according to cover same geographic area sign with the ID of home cell one by one corresponding conversion be mixing sub-district ID.Like this, NodeB has converted single carrier cell of the same geographic area of a plurality of coverings to the mixing sub-district of same quantity.

Step 130, Node B is the Initial Trans of a HC sub-district with the maximum transmission power that covers the one's respective area, the Initial Trans of other HC sub-districts redefines by the mode of successively decreasing successively;

Suppose that the maximum transmission power that covers the one's respective area is P_Max, be numbered k (k=0,1 ..., the power P of N N-1) mixing sub-district_kCalculate by following formula, wherein:

$P_k=\frac{N_u+N_d-k}{7}{P}_{\max }$

That is frequency hopping frame HF,₁(comprise carrier frequency F₀On TS₀Time slot and descending pilot frequency time slot Dwpts, carrier frequency F₁Last TS₄Time slot, carrier frequency F₂Last TS₅With carrier frequency F₃Last TS₆Time slot) to cover the power (P of whole geographic area_Max) emission.Frequency hopping frame HF₂With power P less than the first beacon sub-district_Max* 6/7 emission.The transmitting power of other sub-districts is linear decrease successively, frequency hopping frame HF_NThe transmitting power minimum, equal P_Max* 4/7.As shown in Figure 3, the mixing sub-district after the conversion will have nothing in common with each other on the geographic area covers according to transmitting power.

Need to prove that the transmitting power of above-mentioned each HC sub-district is not limited to the mode of linear decrease, can in Cell Broadcast CB, broadcast the method for successively decreasing.

Step 140, Node B is to each HC sub-district, with the time slot is unit, according to the transmitting power of determining corresponding frequency hopping frame is carried out the slow frequency hopping emission, and the sub-district with the power emission that covers whole geographic area is broadcasting and beacon sub-district, the sub-district that transmitting power is taken second place is standby broadcasting and beacon sub-district, and UE can carry out frequency and measure in the beacon sub-district, the form of decision frequency hopping modulation;

Step 150, UE measures multiple carrier frequency power, RNC measures according to the signal strength measurement of UE or Timing Advance, in the some mixing sub-district that covers this portable terminal position, with the dedicated channel priority allocation of this portable terminal on little mixing sub-district, overlay area.Like this, the dedicated channel of the UE far away apart from the base station can be distributed on the bigger HC sub-district of power, otherwise, then can be distributed in lower-powered HC sub-district;

Under the situation of first application example, will be near the UE of cell edge at HF₁Assigned with dedicated channel on the frame, near the UE of cell edge inboard at HF₂Assigned with dedicated channel on the frame, near the UE in the middle of the sub-district at HF₃Assigned with dedicated channel on the frame, near the UE around the base station then at HF₄Assigned with dedicated channel on the frame.

Step 160, Node B reports the HC ID that redistributes the corresponding HCID of back LC ID, active and standby beacon sub-district in the audit information of sub-district, and the cell informations such as transmitting power of each HC sub-district.

The ascending time slot of each mixing sub-district, the present invention is identical in the processing and the primary standard of UE side and network side.

In sum, after application the inventive method, the total transmitting power in a plurality of sub-districts of same geographic area reduces, thereby can reduce the phase mutual interference between carrier frequency.Because be active and standby broadcast beacon sub-district with two mixing sub-districts wherein only, the TSo time slot of other sub-district can be used as business time-slot, thereby has enlarged the capacity of system, has eliminated the interference of minizone broadcast channel.Because in the present invention, the coverage of each mixing sub-district is descending, thereby the quantity that UE carries out cell measurement and switching in described adjacent overlapping region significantly reduces.In addition, the present invention can also overcome the Rayleigh fading of signal transmission, improves speech quality.

Claims (10)

1. the method that covers of multiple sectors at same time in TD-SCDMA zone may further comprise the steps:

When (a) radio network controller was set up in the sub-district, the home cell that covers for multiple sectors at same added the sign that covers same geographic area, and informing base station;

(b) the base station a plurality of home cells identical to described sign carry out the one by one corresponding conversion of single carrier frequency home cell to the mixing sub-district, all comprise the descending time slot on all described home cell list carrier frequency on the frequency hopping frame of each mixing sub-district;

(c) base station is with the maximum transmission power that covers the one's respective area Initial Trans as a mixing sub-district, and the Initial Trans of other mixing sub-districts is determined by the mode of successively decreasing successively;

(d) base station is unit with the time slot, according to the transmitting power of determining the frequency hopping frame of each mixing sub-district is carried out the frequency hopping emission, and serves as broadcasting and beacon sub-district with the sub-district of transmitting power maximum;

(e) base station reports the correspondence relationship information of redistributing mixing sub-district, back and home cell.

2. the method for claim 1 is characterized in that, described step (b) further may further comprise the steps:

(b1) cell attribute is differentiated in the base station, and statistics is with the sub-district number N of coverage cell, and the ascending time slot of definite each sub-district is counted N_uCount N with descending time slot_d

(b2), make the descending time slot that has all comprised on each the mixing sub-district frequency hopping frame that obtains on all home cell list carrier frequency with the descending time slot combined crosswise of each home cell list carrier frequency;

(b3) base station according to cover same geographic area sign with the sign of home cell one by one corresponding conversion be the mixing cell ID.

3. method as claimed in claim 2 is characterized in that, in the described step (b2), cell carrier frequencies number N equals descending time slot number N_dThe time, the form of each frequency hopping frame is as follows:

$\begin{array}{cccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_1}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-1}}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_2}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_0}\\ & & ...& & & ...& ...& ...\\ {\mathrm{HF}}_N& {\mathrm{TS}}_0^{F_{N-1}}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_0}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-2}}\end{array}$

Wherein, F₀, F₁..., F_j... F_N-1Be the carrier frequency of N home cell, press the absolute wireless frequency numbering of wireless universal access platform frequency numbering from low to high and arrange HF₁, HF₂..., HF_j... HF_NBe the frequency hopping frame of the mixing carrier frequency after the conversion, the subscript of TS is represented the carrier frequency of the affiliated home cell of this time slot in the formula, and following target numeral represents that then this time slot is which time slot in this carrier frequency frame.

4. method as claimed in claim 2 is characterized in that, in the described step (b2), cell carrier frequencies number N is less than descending time slot number N_dThe time, the form of each frequency hopping frame is as follows:

$\begin{array}{cccccccccccc}{\mathrm{HF}}_1& {\mathrm{TS}}_0^{F_0}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_1}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-1}}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_0}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_0}& ...& {\mathrm{TS}}_6^{F_0}\\ {\mathrm{HF}}_2& {\mathrm{TS}}_0^{F_1}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_2}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_0}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_1}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_1}& ...& {\mathrm{TS}}_6^{F_1}\\ & & ...& & & ...& ...& ...& ...& ...& ...& ...\\ {\mathrm{HF}}_N& {\mathrm{TS}}_0^{F_{N-1}}& \mathrm{Dwpts}& \mathrm{GP}& \↑& {\mathrm{TS}}_{\mathrm{Nu}+1}^{F_0}& ...& {\mathrm{TS}}_{\mathrm{Nu}+N-1}^{F_{N-2}}& {\mathrm{TS}}_{\mathrm{Nu}+N}^{F_{N-1}}& {\mathrm{TS}}_{\mathrm{Nu}+N+1}^{F_{N-1}}& ...& {\mathrm{TS}}_6^{F_{N-1}}\end{array}$

Wherein, F₀, F₁..., F_j... F_N-1Be the carrier frequency of N home cell, press the absolute wireless frequency numbering of UTRA frequency numbering from low to high and arrange HF₁, HF₂..., HF_j... HF_NBe the frequency hopping frame of the mixing carrier frequency after the conversion, the subscript of TS is represented the carrier frequency of the affiliated home cell of this time slot in the formula, and following target numeral represents that then this time slot is which time slot in this carrier frequency frame.

5. the method for claim 1 is characterized in that, in the described step (c), the Initial Trans of each mixing sub-district is linear decrease successively.

6. method as claimed in claim 5 is characterized in that, the Initial Trans of described each mixing sub-district is pressed following formula and determined:

$P_k=\frac{N_u+N_d-k}{7}{P}_{\max }$

Wherein, P_MaxFor covering the maximum transmission power of one's respective area, P_kBe the power of N mixing sub-district being numbered k, k=0,1 ..., N-1, and the frequency hopping frame that is numbered the mixing sub-district correspondence of k is HF_K+1, N_uBe ascending time slot number, N_dBe the descending time slot number.

7. the method for claim 1 is characterized in that, in the described step (d), the base station is standby broadcasting and beacon sub-district with second largest sub-district of transmitting power also.

8. the method for claim 1 is characterized in that, in the described step (d), the slow frequency hopping emission is carried out to described frequency hopping frame in the base station.

9. the method for claim 1, it is characterized in that, also comprise step between described step (d) and the step (e): portable terminal is measured multiple carrier frequency power, radio network controller is according to the measurement result of portable terminal signal strength signal intensity or Timing Advance, in covering some mixing sub-district of this portable terminal position, with the dedicated channel priority allocation of this portable terminal on little mixing sub-district, overlay area.

10. the method for claim 1 is characterized in that, in the described step (e), the base station also reports the information of the transmitting power of the sign of active and standby broadcasting and beacon sub-district and each mixing sub-district.

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