CN102098773A - TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system and method for coordinating intercell interferences - Google Patents

Abstract

The invention discloses a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system and a method for coordinating inter-cell interferences, wherein the method comprises the following steps of: determining a current position attribute of a terminal by a base station according to the information of a path loss rate of an adjacent cell to the current cell reported by the terminal; comparing a historical position attribute and the current position attribute of the terminal and judging the change of the position attribute of the terminal by the base station; informing the current position attribute of the terminal of a radio network controller by the base station; and adjusting a carrier wave utilized by the terminal by the radio network controller. In the invention, the system performance can be greatly improved while interferences of the same frequency and the same time slot of cell-edge users are reduced, and the practical commercial use of a scheme can be made possible.

Description

TD-SCDMA system and inter-cell interference coordination method thereof

Technical field

The present invention relates to the communications field, in particular to a kind of TD-SCDMA system and inter-cell interference coordination method thereof.

Background technology

TD-SCDMA (Time Division Synchronization CDMA, TD SDMA) honeycomb mobile communcations system is because its frequency band is narrow, code word is short, and it is relatively poor to deal with the co-frequency co-time slot interference capability.The existence that co-frequency co-time slot disturbs can make the KPI (Key Performance Indication, Key Performance Indicator) of system descend, and therefore need adopt various measures and reduce the influence that co-frequency co-time slot disturbs.

Exist in the system of power control mechanism, soft-frequency reuse is comparatively general coordinating district interference method.Its core concept is:

1) obtain user's information, distinguishing the customer location attribute is Cell Center User or Cell Edge User;

2), the frequency resource that the user uses is adjusted: make the edge customer of sub-district focus on specific frequency according to the customer location attribute.And the mode by network planning guarantees to exist bigger isolation between the specific frequency, thereby reduces the interference between the edge customer.

In the TD-SCDMA system, present related art scheme is to the judgement of customer location attribute, needs to adopt the period measurement report manner, and promptly UE (terminal) is periodically to the interfere information of NodeB (base station) reporting measurement.This mode has in system under a greater number user's the situation, and bigger impact can be arranged the disposal ability of system, reduces systematic function, thereby influences the actual commercialization of this scheme.

Report that at the cycle in the correlation technique disposal ability to system has bigger impact, reduce system performance problems, do not propose effective solution at present as yet.

Summary of the invention

Report that at the cycle in the correlation technique disposal ability to system has bigger impact, reduce system performance problems and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of TD-SCDMA system and inter-cell interference coordination method thereof, one of to address the above problem at least.

To achieve these goals, according to an aspect of the present invention, provide the inter-cell interference coordination method of a kind of TD-SCDMA system.

Inter-cell interference coordination method according to TD-SCDMA of the present invention system comprises: the current position attribution of terminal is determined in the base station according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district; The position attribution of the history of base station comparison terminal and current position attribution judge that the position attribution of terminal changes; The base station is notified to radio network controller with the current position attribution of terminal; Radio network controller is adjusted the carrier wave that terminal is used.

Preferably, determining the current position attribution of terminal according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district before, the base station also comprises:

When the path loss ratio of the adjacent sub-district of adopting Report Type 1 and this sub-district, the path loss ratio that terminal is calculated adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{serv}}/L_n},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Terminal is according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Terminal reports the base station with the path loss ratio index value of adjacent sub-district and this sub-district as the path loss ratio information of adjacent sub-district and this sub-district.

Preferably, determining the current position attribution of terminal according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district before, the base station also comprises:

When the path loss ratio of the adjacent sub-district of adopting Report Type 2 and this sub-district, the path loss ratio that terminal is calculated adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{\underset{n=1\·\·\·N}{\min }\left(L_n\right)}{L_{\mathrm{serv}}},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Terminal is according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Terminal reports the base station with the path loss ratio index value of adjacent sub-district and this sub-district as the path loss ratio information of adjacent sub-district and this sub-district.

Preferably, the base station determines that according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district the current position attribution of terminal comprises: the base station is according to the mapping relations that set in advance, and the path loss ratio index value of the adjacent sub-district of terminal to report and this sub-district reflected penetrate the path loss ratio that obtains corresponding adjacent sub-district and this sub-district; The magnitude relationship of the adjacent sub-district that obtains and this sub-district are penetrated in the base station according to the position attribution of the history of terminal and reflection path loss ratio and default handoff threshold is determined the current position attribution of terminal.

Preferably, position attribution comprises center of housing estate position or cell edge position, the magnitude relationship of the adjacent sub-district that obtains and this sub-district are penetrated in the base station according to the position attribution of the history of terminal and reflection path loss ratio and default handoff threshold, the current position attribution of determining terminal comprises: when the position attribution of the history of terminal is center of housing estate position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district less than default interior during to the outer ring handoff threshold, the base station determines that the current position attribution of terminal is the cell edge position; When the position attribution of the history of terminal is cell edge position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district greater than default outer during to the inner ring handoff threshold, the base station determines that the current position attribution of terminal is the center of housing estate position.

Preferably, be provided with the inner ring carrier wave and the outer ring carrier wave of each sub-district in the radio network controller in advance, and the outer ring carrier wave of neighbor cell uses different frequencies, position attribution is that the terminal of center of housing estate position is used the inner ring carrier wave, position attribution is that the terminal of cell edge position is used the outer ring carrier wave, radio network controller is adjusted the carrier wave that terminal uses and is comprised: when the current position attribution of the terminal of base station notice as center of housing estate position and the current carrier wave that uses of terminal during as the outer ring carrier wave, radio network controller is adjusted into the inner ring carrier wave with the carrier wave of terminal use; When the current position attribution of the terminal of base station notice is the current carrier wave that uses of cell edge position and terminal during as the inner ring carrier wave, the carrier wave that radio network controller uses terminal is adjusted into the outer ring carrier wave.

To achieve these goals, according to a further aspect in the invention, provide a kind of TD-SCDMA system.

According to TD-SCDMA of the present invention system, comprising: terminal, base station and radio network controller, wherein

The base station is used for determining according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district the current position attribution of terminal; Also be used for the position attribution of history of comparison terminal and current position attribution, judge that the position attribution of terminal changes; Also be used for the current position attribution of terminal is notified to radio network controller;

Radio network controller is used to adjust the carrier wave that terminal is used.

Preferably, terminal comprises:

Computing module, when being used for the path loss ratio when the adjacent sub-district of adopting Report Type 1 and this sub-district, the path loss ratio of calculating adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{serv}}/L_n},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district; Perhaps

When also being used for the path loss ratio when the adjacent sub-district of adopting Report Type 2 and this sub-district, the path loss ratio of calculating adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{\underset{n=1\·\·\·N}{\min }\left(L_n\right)}{L_{\mathrm{serv}}},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Mapping block is used for according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Sending module is used for the path loss ratio index value of adjacent sub-district and this sub-district is reported the base station as the path loss ratio information of adjacent sub-district and this sub-district.

Preferably, the base station comprises:

Module is penetrated in reflection, is used for according to the mapping relations that set in advance, the path loss ratio index value of the adjacent sub-district of terminal to report and this sub-district is reflected penetrate the path loss ratio that obtains corresponding adjacent sub-district and this sub-district;

The position discrimination module, the magnitude relationship of the path loss ratio that is used for penetrating the adjacent sub-district that obtains and this sub-district according to the position attribution of the history of terminal and reflection and default handoff threshold is determined the current position attribution of terminal.

Preferably, position attribution comprises center of housing estate position or cell edge position, it is center of housing estate position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district less than default interior during to the outer ring handoff threshold that the position discrimination module also is used for position attribution when the history of terminal, and the current position attribution of determining terminal is the cell edge position; Also be used for position attribution when the history of terminal and be path loss ratio that cell edge position and reflection penetrate the adjacent sub-district that obtains and this sub-district greater than default outer during to the inner ring handoff threshold, the current position attribution of determining terminal is the center of housing estate position.

Preferably, be provided with the inner ring carrier wave and the outer ring carrier wave of each sub-district in the radio network controller in advance, and the outer ring carrier wave of neighbor cell uses different frequencies, position attribution is that the terminal of center of housing estate position is used the inner ring carrier wave, position attribution is that the terminal of cell edge position is used the outer ring carrier wave, and radio network controller comprises:

Adjusting module, when being used for current position attribution when the terminal of base station notice and being the current carrier wave that uses of center of housing estate position and terminal as the outer ring carrier wave, the carrier wave that terminal is used is adjusted into the inner ring carrier wave; When also being used for current position attribution when the terminal of base station notice and being the current carrier wave that uses of cell edge position and terminal as the inner ring carrier wave, the carrier wave that terminal is used is adjusted into the outer ring carrier wave.

Owing to utilize the SNPL information mechanism that the customer location attribute of terminal is differentiated, solved cycle report in the correlation technique disposal ability of system has been had a bigger impact, reduce system performance problems, thereby provide a kind of inter-cell interference coordination method at HSPA user, can be when the co-frequency co-time slot that reduces Cell Edge User disturbs, elevator system performance greatly is for the actual commercialization of scheme provides possibility.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the flow chart according to the inter-cell interference coordination method of the TD-SCDMA system of the embodiment of the invention;

Fig. 2 is the schematic diagram according to the TD-SCDMA system of the embodiment of the invention;

Fig. 3 is the configuration schematic diagram of frequency point network ruleization according to the preferred embodiment of the invention;

Fig. 4 is the configuration schematic diagram of Internal and external cycle handoff threshold according to the preferred embodiment of the invention;

Fig. 5 is the flow chart of the inter-cell interference coordination method of TD-SCDMA system according to the preferred embodiment of the invention.

Embodiment

Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.

Method embodiment

According to embodiments of the invention, provide the inter-cell interference coordination method of a kind of TD-SCDMA system.

As shown in Figure 1, this method comprises that following step S102 is to step S108:

Step S102, the base station according to the path loss ratio of adjacent sub-district He this sub-district of terminal to report (Serving and Neighbor cell Pathloss, SNPL) information is determined the current position attribution of terminal;

Step S104, the position attribution of the history of base station comparison terminal and current position attribution judge that the position attribution of terminal changes;

Step S106, the base station is notified to radio network controller with the current position attribution of terminal;

Step S108, radio network controller is adjusted the carrier wave that terminal is used.

This embodiment is owing to utilize the SNPL information mechanism that the customer location attribute of terminal is differentiated, and having solved cycle report in the correlation technique has bigger impact to the disposal ability of system, reduces system performance problems.This embodiment is at HSPA (High Speed Packet Access, High Speed Packet Access) user provides a kind of inter-cell interference coordination method, can be when the co-frequency co-time slot that reduces Cell Edge User disturbs, elevator system performance greatly is for the actual commercialization of scheme provides possibility.

In addition, in the TD-SCDMA system, the SNPL information of utilizing HSPA user will report in up need not extraly reporting information and has saved taking of resource so that the position attribution of terminal can be judged in the base station.

Preferably, before step S102, also comprise:

When the path loss ratio of the adjacent sub-district of adopting Report Type 1 and this sub-district, the path loss ratio that terminal is calculated adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{serv}}/L_n},$ Wherein, L _ServThe circuit loss value of expression Serving cell (Serving cell is this sub-district at the current place of terminal), L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Terminal is according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Terminal reports the base station with the path loss ratio index value of adjacent sub-district and this sub-district as the path loss ratio information of adjacent sub-district and this sub-district.

The preferred embodiment provides SNPL that UE reports under the situation that adopts " Report Type 1 ", and UE calculates SNPL and it is mapped as the SNPL index value, and the SNPL index value reports the specific embodiments of base station the most at last.

Preferably, before step S102, also comprise:

When the path loss ratio of the adjacent sub-district of adopting Report Type 2 and this sub-district, the path loss ratio that terminal is calculated adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{\underset{n=1\·\·\·N}{\min }\left(L_n\right)}{L_{\mathrm{serv}}},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Terminal is according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Terminal reports the base station with the path loss ratio index value of adjacent sub-district and this sub-district as the path loss ratio information of adjacent sub-district and this sub-district.

The preferred embodiment provides SNPL that UE reports under the situation that adopts " Report Type 2 ", and UE calculates SNPL and it is mapped as the SNPL index value, and the SNPL index value reports the specific embodiments of base station the most at last.

Preferably, step S102 comprises:

The base station is according to the mapping relations that set in advance, the path loss ratio index value of the adjacent sub-district of terminal to report and this sub-district reflected penetrate the path loss ratio that obtains corresponding adjacent sub-district and this sub-district;

The magnitude relationship of the adjacent sub-district that obtains and this sub-district are penetrated in the base station according to the position attribution of the history of terminal and reflection path loss ratio and default handoff threshold is determined the current position attribution of terminal.

Wherein, position attribution comprises center of housing estate position or cell edge position, the magnitude relationship of the adjacent sub-district that obtains and this sub-district are penetrated in the base station according to the position attribution of the history of terminal and reflection path loss ratio and default handoff threshold, determine that the current position attribution of terminal comprises:

When the position attribution of the history of terminal is center of housing estate position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district less than default interior during to the outer ring handoff threshold, the base station determines that the current position attribution of terminal is the cell edge position;

When the position attribution of the history of terminal is cell edge position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district greater than default outer during to the inner ring handoff threshold, the base station determines that the current position attribution of terminal is the center of housing estate position.

Above preferred embodiment provides the base station to determine the specific embodiments of the current position attribution of terminal according to the SNPL information of terminal to report.

Preferably, be provided with the inner ring carrier wave and the outer ring carrier wave of each sub-district in the radio network controller in advance, and the outer ring carrier wave of neighbor cell uses different frequencies, position attribution is that the terminal of center of housing estate position is used the inner ring carrier wave, position attribution is that the terminal of cell edge position is used the outer ring carrier wave, and step S108 comprises:

When the current position attribution of the terminal of base station notice is the current carrier wave that uses of center of housing estate position and terminal during as the outer ring carrier wave, the carrier wave that radio network controller uses terminal is adjusted into the inner ring carrier wave;

When the current position attribution of the terminal of base station notice is the current carrier wave that uses of cell edge position and terminal during as the inner ring carrier wave, the carrier wave that radio network controller uses terminal is adjusted into the outer ring carrier wave.

The specific embodiments that above preferred embodiment provides RNC according to the current position attribution of the terminal of base station notice the carrier wave of terminal use to be adjusted.

Device embodiment

According to embodiments of the invention, provide a kind of TD-SCDMA system.

As shown in Figure 2, this system comprises: terminal 10, base station 20 and radio network controller 30, wherein

The path loss ratio information that base station 20 is used for the adjacent sub-district that reports according to terminal 10 and this sub-district is determined the current position attribution of terminal 10; Also be used for the position attribution of history of comparison terminal 10 and current position attribution, judge that the position attribution of terminal 10 changes; Also be used for the current position attribution of terminal 10 is notified to radio network controller 30;

Radio network controller 30 is used to adjust the carrier wave that terminal 10 is used.

This embodiment is owing to utilize the SNPL information mechanism that the customer location attribute of terminal is differentiated, and having solved cycle report in the correlation technique has bigger impact to the disposal ability of system, reduces system performance problems.This embodiment is at HSPA (High Speed Packet Access, High Speed Packet Access) user provides a kind of inter-cell interference coordination method, can be when the co-frequency co-time slot that reduces Cell Edge User disturbs, elevator system performance greatly is for the actual commercialization of scheme provides possibility.

Preferably, terminal 10 comprises:

Computing module 101, when being used for the path loss ratio when the adjacent sub-district of adopting Report Type 1 and this sub-district, the path loss ratio of calculating adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{serv}}/L_n},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district; Perhaps

When also being used for the path loss ratio when the adjacent sub-district of adopting Report Type 2 and this sub-district, the path loss ratio of calculating adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{\underset{n=1\·\·\·N}{\min }\left(L_n\right)}{L_{\mathrm{serv}}},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Mapping block 102 is used for according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Sending module 103 is used for the path loss ratio index value of adjacent sub-district and this sub-district is reported the base station as the path loss ratio information of adjacent sub-district and this sub-district.

Base station 20 comprises:

Module 201 is penetrated in reflection, is used for according to the mapping relations that set in advance, the path loss ratio index value of the adjacent sub-district of terminal to report and this sub-district is reflected penetrate the path loss ratio that obtains corresponding adjacent sub-district and this sub-district;

Position discrimination module 202, the magnitude relationship of the path loss ratio that is used for penetrating the adjacent sub-district that obtains and this sub-district according to the position attribution of the history of terminal and reflection and default handoff threshold is determined the current position attribution of terminal.

Wherein, position attribution comprises center of housing estate position or cell edge position, it is center of housing estate position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district less than default interior during to the outer ring handoff threshold that position discrimination module 202 also is used for position attribution when the history of terminal, and the current position attribution of determining terminal is the cell edge position; Also be used for position attribution when the history of terminal and be path loss ratio that cell edge position and reflection penetrate the adjacent sub-district that obtains and this sub-district greater than default outer during to the inner ring handoff threshold, the current position attribution of determining terminal is the center of housing estate position.

Be provided with the inner ring carrier wave and the outer ring carrier wave of each sub-district in the radio network controller 30 in advance, and the outer ring carrier wave of neighbor cell uses different frequencies, position attribution is that the terminal of center of housing estate position is used the inner ring carrier wave, position attribution is that the terminal of cell edge position is used the outer ring carrier wave, and radio network controller 30 comprises:

Adjusting module 301, when being used for current position attribution when the terminal 10 of base station 20 notice and being the current carrier wave that uses of center of housing estate position and terminal as the outer ring carrier wave, the carrier wave that terminal is used is adjusted into the inner ring carrier wave; When also being used for current position attribution when the terminal of base station notice and being the current carrier wave that uses of cell edge position and terminal as the inner ring carrier wave, the carrier wave that terminal is used is adjusted into the outer ring carrier wave.

Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.

Fig. 5 shows the flow chart of the inter-cell interference coordination method of TD-SCDMA system according to the preferred embodiment of the invention, may further comprise the steps:

Step 501, backstage configuring wireless network controller (Radio Network Controller, RNC) the Internal and external cycle frequency in;

Particularly, as shown in Figure 4, microzonation is divided into inner ring and outer ring,,, guarantees that " the outer ring carrier wave " of neighbor cell uses different frequency resources cell configuration " inner ring carrier wave " and " outer ring carrier wave " according to the frequency configuration scheme of network.The frequency configuration scheme can be referring to Fig. 3, and " the inner ring carrier wave " of 3 neighbor cells can use identical frequency: F1 and F2; " outer ring carrier wave " uses different frequency F4, F5 and F6.When the position attribution of terminal is " center of housing estate position ", think that terminal is positioned at inner ring, be terminal distribution inner ring carrier wave; When the position attribution of terminal is " cell edge position ", think that terminal is positioned at the outer ring, be terminal distribution outer ring carrier wave.

Step 502, base station (NodeB) differentiates the customer location attribute of terminal;

NodeB receives the SNPL information that UE reports at every turn in up, all carry out the customer location attribute that terminal is adjudicated in following judgement:

If the position attribution of the history of UE is " center of housing estate position ", and SNPL＜interior to outer ring handoff threshold Q _InToOut(be used for differentiating the user who is positioned at " inner ring " and whether move to " outer ring " zone), then NodeB judges that the current customer location attribute of UE is that " cell edge position " (position attribution that is terminal is changed to " cell edge position " by " center of housing estate position ", as the arrow among Fig. 4 (1)), notice RNC sign=TRUE is set;

If the position attribution of the history of UE is " cell edge position ", and SNPL＞arrive outward inner ring handoff threshold Q _OutToin(be used for differentiating the user who is positioned at " outer ring " and whether move to " inner ring " zone), then NodeB judges that the current customer location attribute of UE is that " center of housing estate position " (position attribution that is terminal is changed to " center of housing estate position " by " cell edge position ", as the arrow among Fig. 4 (3)), notice RNC sign=TRUE is set.

Illustrate: this method is suitable for " Report Type 1 " and " Report Type 2 " two kinds of situations for SNPL.Be that example is elaborated with " Report Type 2 " below.

The SNPL that UE (terminal) reports adopt " under Report Type 1 situation, it is defined as:

$\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{serv}}/L_n},---\left(1\right)$

Wherein, Φ represents the path loss ratio of adjacent sub-district He this sub-district of terminal, L _ServThe circuit loss value of expression Serving cell, L ₁, L ₂... L _NBe respectively the circuit loss value of N adjacent sub-district.

The SNPL that UE reports is under the situation that adopts " Report Type 2 ", and it is defined as:

$\mathrm{\Φ}=\frac{\underset{n=1\·\·\·N}{\min }\left(L_n\right)}{L_{\mathrm{serv}}}---\left(2\right)$

Wherein, Φ represents the path loss ratio of adjacent sub-district He this sub-district of terminal, L _ServThe circuit loss value of expression Serving cell, L ₁, L ₂... L _NBe respectively the circuit loss value of N adjacent sub-district.

UE shines upon the SNPL (being the value of Φ) that calculates according to the mapping relations shown in the table 1, obtains corresponding SNPL index value, and this process is actual to be the quantizing process of SNPL.After the mapping, the SNPL index value (as SNPL information) that UE reports mapping to obtain by the UU mouth to NodeB.

Table 1 SNPL mapping relations

Q＝10*log10(φ)	The SNPL index value
		Q＜-6	0
-6≤Q＜-5	1
		-5≤Q＜-4	2
-4≤Q＜-3	3
		-3≤Q＜-2	4
-2≤Q＜-1	5
		-1≤Q＜-0	6
0≤Q＜1	7
		1≤Q＜2	8
2≤Q＜3	9
		3≤Q＜4	10
4≤Q＜5	11
		5≤Q＜6	12

6≤Q＜7	13
		7≤Q＜8	14
8≤Q＜9	15
		9≤Q＜10	16
10≤Q＜11	17
		11≤Q＜12	18
12≤Q＜13	19
		13≤Q＜14	20
14≤Q＜15	21
		15≤Q＜16	22
16≤Q＜17	23
		17≤Q＜18	24
18≤Q＜19	25
		19≤Q＜20	26
20≤Q＜21	27
		21≤Q＜22	28
22≤Q＜23	29
		23≤Q＜24	30
24≤Q＜25	31

In the table 1, the unit that Q=10*log10 (φ) is the above-mentioned Φ that calculates according to formula (1) or formula (2) is converted to dB.

As can be known, SNPL is big more, and then terminal is near more apart from the base station, and terminal is more near the center.

After NodeB receives the SNPL index value that UE reports, reflect to penetrate according to table 1 again to obtain corresponding Q value, thereby carry out the customer location attribute that terminal is adjudicated in above-mentioned judgement.

It should be noted that in two above-mentioned parameters to outer ring handoff threshold Q _InToOutWith the outer inner ring handoff threshold Q that arrives _OutToinEquipping rules be: (1) makes that the user load of each carrier wave can be comparatively average evenly under the distribution situation; There is certain isolation between (2) two thresholdings, in order to avoid subscribers carrier selects to occur ping-pong phenomenon.

Step 503 is when NodeB changes at the position attribution of judging UE, by IUB interface notice RNC;

Particularly, if notice RNC is sign=TRUE, then NodeB is by the current position attribution of this terminal of IUB interface notice RNC.

Step 504, RNC carries out matching check and adjustment according to the current position attribution of UE in the IUB interface to the carrier resource that UE uses;

If the current position attribution of UE is " center of housing estate position ", but its current place carrier wave is " an outer ring carrier wave ", then initiates the flow process that carrier wave is adjusted, and it is adjusted to " inner ring carrier wave ";

If the position attribution of UE is " cell edge position ", but its current place carrier wave is " an inner ring carrier wave ", then initiates the flow process that carrier wave is adjusted, and it is adjusted to " inner ring carrier wave ".

From above description, as can be seen, the present invention has realized following technique effect: to using the user of HSPA resource, can judge user's position attribution, and carry out the interference coordination of minizone, thus avoid in the correlation technique life cycle measurement scheme to the impact of system, thus can be when the co-frequency co-time slot that reduces Cell Edge User disturbs, elevator system performance greatly is for the actual commercialization of scheme provides possibility.

Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (11)

1. the inter-cell interference coordination method of a TD-SCDMA system is characterized in that, comprising:

The current position attribution of described terminal is determined in the base station according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district;

The position attribution of the history of the more described terminal in described base station and described current position attribution judge that the position attribution of described terminal changes;

Described base station is notified to radio network controller with the current position attribution of described terminal;

Described radio network controller is adjusted the carrier wave that described terminal is used.

2. method according to claim 1 is characterized in that, determines according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district in the base station also to comprise before the current position attribution of described terminal:

When the path loss ratio of the adjacent sub-district of adopting Report Type 1 and this sub-district, the path loss ratio that described terminal is calculated adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{serv}}/L_n},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Described terminal is according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Described terminal reports described base station with the path loss ratio index value of described adjacent sub-district and this sub-district as the path loss ratio information of described adjacent sub-district and this sub-district.

3. method according to claim 1 is characterized in that, determines according to the path loss ratio information of the adjacent sub-district of terminal to report and this sub-district in the base station also to comprise before the current position attribution of described terminal:

When the path loss ratio of the adjacent sub-district of adopting Report Type 2 and this sub-district, the path loss ratio that described terminal is calculated adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{\underset{n=1...N}{\min }\left(L_n\right)}{L_{\mathrm{serv}}},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Described terminal is according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Described terminal reports described base station with the path loss ratio index value of described adjacent sub-district and this sub-district as the path loss ratio information of described adjacent sub-district and this sub-district.

4. according to claim 2 or 3 described methods, it is characterized in that the base station determines that according to the adjacent sub-district of terminal to report and the path loss ratio information of this sub-district the current position attribution of described terminal comprises:

Described base station is according to the described mapping relations that set in advance, and the path loss ratio index value of the adjacent sub-district of described terminal to report and this sub-district reflected penetrate the path loss ratio that obtains corresponding adjacent sub-district and this sub-district;

The magnitude relationship of the adjacent sub-district that obtains and this sub-district are penetrated in described base station according to the position attribution of the history of described terminal and reflection path loss ratio and default handoff threshold is determined the current position attribution of described terminal.

5. method according to claim 4, it is characterized in that, described position attribution comprises center of housing estate position or cell edge position, the magnitude relationship of the adjacent sub-district that obtains and this sub-district are penetrated in described base station according to the position attribution of the history of described terminal and reflection path loss ratio and default handoff threshold, determine that the current position attribution of described terminal comprises:

When the position attribution of the history of described terminal is center of housing estate position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district less than default interior during to the outer ring handoff threshold, described base station determines that the current position attribution of described terminal is the cell edge position;

When the position attribution of the history of described terminal is cell edge position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district greater than default outer during to the inner ring handoff threshold, described base station determines that the current position attribution of described terminal is the center of housing estate position.

6. method according to claim 5, it is characterized in that, be provided with the inner ring carrier wave and the outer ring carrier wave of each sub-district in the described radio network controller in advance, and the outer ring carrier wave of neighbor cell uses different frequencies, position attribution is that the terminal of center of housing estate position is used the inner ring carrier wave, position attribution is that the terminal of cell edge position is used the outer ring carrier wave, and the carrier wave that described radio network controller is adjusted described terminal use comprises:

When the current position attribution of the described terminal of described base station notice is the current carrier wave that uses of center of housing estate position and described terminal during as the outer ring carrier wave, the carrier wave that described radio network controller uses described terminal is adjusted into the inner ring carrier wave;

When the current position attribution of the described terminal of described base station notice is the current carrier wave that uses of cell edge position and described terminal during as the inner ring carrier wave, the carrier wave that described radio network controller uses described terminal is adjusted into the outer ring carrier wave.

7. a TD-SCDMA system is characterized in that, comprising: terminal, base station and radio network controller, wherein

Described base station is used for determining according to the path loss ratio information of the adjacent sub-district of described terminal to report and this sub-district the current position attribution of described terminal; Also be used for the position attribution and the described current position attribution of the history of more described terminal, judge that the position attribution of described terminal changes; Also be used for the current position attribution of described terminal is notified to radio network controller;

Described radio network controller is used to adjust the carrier wave that described terminal is used.

8. system according to claim 7 is characterized in that, described terminal comprises:

Computing module, when being used for the path loss ratio when the adjacent sub-district of adopting Report Type 1 and this sub-district, the path loss ratio of calculating adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{serv}}/L_n},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district; Perhaps

When also being used for the path loss ratio when the adjacent sub-district of adopting Report Type 2 and this sub-district, the path loss ratio of calculating adjacent sub-district and this sub-district is:

$\mathrm{\Φ}=\frac{\underset{n=1...N}{\min }\left(L_n\right)}{L_{\mathrm{serv}}},$ Wherein, L _ServThe circuit loss value of expression Serving cell, L _nThe circuit loss value of representing adjacent sub-district, N represents the quantity of adjacent sub-district;

Mapping block is used for according to the mapping relations that set in advance, and the path loss ratio index value that obtains corresponding adjacent sub-district and this sub-district is shone upon in the adjacent sub-district that calculates and the path loss ratio of this sub-district;

Sending module is used for the path loss ratio index value of described adjacent sub-district and this sub-district is reported described base station as the path loss ratio information of described adjacent sub-district and this sub-district.

9. system according to claim 8 is characterized in that, described base station comprises:

Module is penetrated in reflection, is used for according to the described mapping relations that set in advance, the path loss ratio index value of the adjacent sub-district of described terminal to report and this sub-district is reflected penetrate the path loss ratio that obtains corresponding adjacent sub-district and this sub-district;

The position discrimination module, the magnitude relationship of the path loss ratio that is used for penetrating the adjacent sub-district that obtains and this sub-district according to the position attribution of the history of described terminal and reflection and default handoff threshold is determined the current position attribution of described terminal.

10. system according to claim 9, it is characterized in that, described position attribution comprises center of housing estate position or cell edge position, it is center of housing estate position and the reflection path loss ratio of penetrating the adjacent sub-district that obtains and this sub-district less than default interior during to the outer ring handoff threshold that described position discrimination module also is used for position attribution when the history of described terminal, and the current position attribution of determining described terminal is the cell edge position; Also be used for position attribution when the history of described terminal and be path loss ratio that cell edge position and reflection penetrate the adjacent sub-district that obtains and this sub-district greater than default outer during to the inner ring handoff threshold, the current position attribution of determining described terminal is the center of housing estate position.

11. system according to claim 10, it is characterized in that, be provided with the inner ring carrier wave and the outer ring carrier wave of each sub-district in the described radio network controller in advance, and the outer ring carrier wave of neighbor cell uses different frequencies, position attribution is that the terminal of center of housing estate position is used the inner ring carrier wave, position attribution is that the terminal of cell edge position is used the outer ring carrier wave, and described radio network controller comprises:

Adjusting module, when being used for current position attribution when the described terminal of described base station notice and being the current carrier wave that uses of center of housing estate position and described terminal as the outer ring carrier wave, the carrier wave that described terminal is used is adjusted into the inner ring carrier wave; When also being used for current position attribution when the described terminal of described base station notice and being the current carrier wave that uses of cell edge position and described terminal as the inner ring carrier wave, the carrier wave that described terminal is used is adjusted into the outer ring carrier wave.

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