CN102595630A - Hybrid access method and system based on partial resource sharing - Google Patents

Abstract

The invention relates to a hybrid access method based on partial resource sharing. The method comprises the following steps: browsing all available resources of each femtocell, and dividing all the available resources of each femtocell into public resources and private resources, which correspond to each femtocell; determining a femtocell base station subjected to candidate access, which correspond to accessed MUE (Micro User Equipment), and collecting and acquiring an MUE assembly which is subjected to candidate access and corresponds to each femtocell; and for each femtocell, selecting the MUE from the MUE assembly subjected to candidate access and accessed the selected MUE into the femtocell, and the accessed MUE and FUE (Femtocell User Equipment) accessed into the femtocell share the public resources of the femtocell. The invention also relates to a hybrid access system based on partial resource sharing. According to the invention, difference between PRBs (Physical Resource Blocks) is drawn into consideration, the available resources of the femtocell are divided into the public resources and the private resources. The MUE accessed into the femtocell can use the part of public resources, so that part of the MUE seriously interfered by the femtocell is accessed into the femtocell, the channel quality of the MUE is improved, accordingly, the throughput of the MUE is improved under the condition that the FUE throughput is ensured.

Description

Hybrid access method and system based on the part resource-sharing

Technical field

The present invention relates to communication technical field, relate in particular to a kind of hybrid access method and system based on the part resource-sharing.

Background technology

Continuous development along with the communication technology; From GSM to CDMA; Arrive WCDMA, HSPA, LTE again; From the 2G GSM of low speed data and voice can be provided, to the LTE GSM that high-speed data service can be provided, the power system capacity and the service quality of GSM are promoted significantly.

Yet, the evolution of the communication technology, professional expansion, the change of user's custom also can make the LTE systems face problem that can support high speed business:

1,, surpasses 50% speech business and surpass 70% data service and carry out indoor according to authoritative institution statistics.Operator builds a lot of outdoor base stations in order to increase indoor coverage rate, need to increase.But; Because the finiteness of Radio Resource, increasing outdoor base station not only can be because of the shared existence of frequency very large disturbance, and the cost of directly building more macro base station and also can increase significantly grid (comprises equipment purchase; Safeguard, and the spent manpower of addressing).

2, the frequency of current communication system use is increasingly high, from incipient 800MHZ 2GHZ till now, or even 4GHZ, the decay of channel also can be increasing thereupon, adds the loss that wall causes, causes indoor signal of poor quality, and user satisfaction is low.

In order to address this problem, arise at the historic moment in family base station.Family base station be a kind of be to buy and be installed in indoor compact low power cellular basestation (for example femtocell femtocell) by the user, this base station is the effective means that improves indoor voice-and-data QoS.The femtocell technology has following advantage: a. low-cost, is convenient to the user and builds as required; B. low-power is not easy to cause the interfering with each other of signal; C. compatible strong, user more exchange device just can obtain better data transmission quality.

But the introducing of femtocell is equivalent in conventional cellular network, introduce new interference source.If the interference that is brought by femtocell makes the loss of throughput of macrocellular macrocell reach flagrant degree, the causes system overall performance descends, and has just lost more than gain.So the interference problem research between femtocell and macrocell has crucial practical significance and value.

At present, the downlink interference collaboration technology can be divided into two big types between macrocell commonly used and femtocell, and one type is frequency resource allocation; One type is access scheme.Respectively these two kinds of schemes are done brief account below.

Frequency resource allocation is divided into disturbance coordination method and two kinds of the descending disturbance restraining methods of dynamically dividing frequency macrocell and femtocell between macrocell and the femtocell of semi-static channeling again.

For disturbance coordination method between the macrocell of semi-static channeling and femtocell; This method adopts soft-frequency reuse (SFR) interference coordination strategy based on macrocell, according to the multiplexing shared resource in the position of the femtocell base station distance of macrocell base station (promptly with).As shown in Figure 1, when the femtocell base station is positioned at macrocell central area (situation 1), the frequency resource that femtocell uses the macrocellular edge customer to use; Otherwise, when the femtocell base station is positioned at macrocell fringe region (situation 2), the Resource Block that femtocell will use the macrocellular central user to use.

Semi-static channeling disturbance coordination method with distance between macrocell base station and femtocell base station as the foundation of femtocell partition of available resources; Though can reduce macrocell user's interference; But femtocell can only use the frequency resource of partial fixing; Throughput is limited, will cause the reduction of system's average frequency spectrum utilance.

For the macrocell of dynamic division frequency and the descending disturbance restraining method of femtocell, this method is according to interferometry, and restriction femtocell uses the part resource, and the macrocell user priority uses the resource that femtocell limits the use of simultaneously.As shown in Figure 2; The user MUE1 of Macrocell (Macro User Equipment; The macrocellular user) through detecting the intensity of femtocell signal on every side; Confirming has strongly disturbing femtocell to it, sends descending HII (High Interference Indicator, high interference indication) information by the macrocell base station its user is produced strongly disturbing femtocell base station.After the femtocell base station receives HII, the frequency resource that does not re-use HII and comprised.The macrocell base station then is to send the frequency resource of distributing femtocell to limit the use of to MUE1 behind the HII.

Dynamic frequency is divided the throughput and the performance that guarantees family base station that can improve macrocellular than semi-static channeling more effectively.But this scheme femtocell in implementation process still can only use the component frequency resource; Throughput is limited; And need between femtocell base station and macrocell base station, carry out frequent information interaction; With bringing bigger signaling consumption and time delay, cause accuracy, the validity of high interference indication to be affected.

Access scheme mainly comprises 3 kinds of access waies that Femtocell provides: open access (Open Access), closed access (Closed Access) and mixing insert (Hybrid Access).

Under Closed Access mode, femtocell only allows authorized user to insert, and in the femtocell coverage or near the macrocell user femtocell can not insert this femtocell, but can receive the strong jamming of femtocell.

Under Open Access mode, when macrocell user received big or macrocell user's the dtr signal of the interference of femtocell, macrocell user just can be linked into femtocell.But this access way, it is very limited having ignored the number of users that femtocell can hold, and is generally 4 to 10.Cross the throughput that can badly influence femtocell user at most if insert the macrocell number of users of femtocell.

Hybrid Access mode is the compromise of Closed Access mode and Open Access mode.In Hybrid Access mode, the uncommitted user of part allows to be linked into femtocell.But in order to guarantee femtocell user's throughput, in the existing access scheme based on HybridAccess, but a part of scheme is fixed access customer number, and a part of scheme makes the user insert the back available volume of resources and fixes.

At present; In the static resource allocation scheme that Hybrid Access mode adopts; Available resources were fixed after the fixing or user of the number of users that can insert inserted femtocell, but static Resource Allocation Formula can not adapt to user, professional time dependent scene well.

As shown in Figure 3, suppose that the supported number of users of femtocell is 4, and the quantity that restriction MUE can be linked into femtocell is 1.For femtoA, receive the strongly disturbing MUE2 of femtoA and be linked among the femtoA.For femtoB, receive the strongly disturbing MUE5 of femtoB and be linked among the femtoB.Because the admissible MUE of femtocell fixes, make the MUE3 that disturbed by femtoB can not be linked into femtoB.But the user among the femtoB does not reach the upper limit that can support number of users at this moment.Therefore, static Resource Allocation Formula can not adapt to user, professional time dependent scene well.

In addition, current programme is not considered the otherness of user in different PRB upper signal channel quality when selecting to insert the user and confirm to insert user's available resources, cause the reduction of femtocell user throughput easily.Shown in Fig. 3 (b), (femtocell user equipment, available resources FUE) are respectively A and B to suppose to insert behind the femtoB MUE and femtocell user by MUE.Because the channel quality of user on different resource is different, if FUE is better than the channel quality on resource B at the channel quality on the resource A, and FUE can not use resource A, and the FUE throughput is descended greatly.

Summary of the invention

The objective of the invention is to propose a kind of hybrid access method and system, can improve femtocell user's throughput the improve channel quality of MUE of existing Hybrid Access mode based on the part resource-sharing.

Another object of the present invention is to propose a kind of hybrid access method and system based on the part resource-sharing, and adjustment that can be semi-static can insert the quantity of MUE, with adapt to the user, professional in time, the scene that changes of place.

For realizing above-mentioned purpose, the invention provides a kind of hybrid access method based on the part resource-sharing, comprising:

Travel through whole available resources of each femtocell (femtocell), whole available resources of each femtocell are divided into public (Public) resource and privately owned (Private) resource of corresponding each femtocell respectively;

Confirm the femtocell that the corresponding macrocellular user's of access (MUE) candidate inserts, and gather the macrocellular user set that the candidate that obtains corresponding each femtocell inserts;

For each femtocell; The macrocellular user who inserts from the candidate gathers and selects the macrocellular user to insert said femtocell, the public resource of the shared corresponding said femtocell of femtocell user (FUE) that the macrocellular user of access and this femtocell insert down.

Further, before confirming to insert macrocellular user's access candidate base station, also comprise:

According to pilot signal receiving intensity (Reference Signal Received Power; Be called for short RSRP) the macrocellular user is divided into non-access macrocellular user and inserts two types of macrocellular users; Pilot signal receiving intensity RSRP＞RSRP_TH of wherein said non-access macrocellular user; Pilot signal receiving intensity RSRP≤RSRP_TH of said access macrocellular user, RSRP_TH representes pilot signal receiving intensity predetermined threshold value.

Further, said whole available resources with each femtocell are divided into the public resource of corresponding each femtocell respectively and the operation of privately owned resource specifically comprises:

Calculate the Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio be called for short SINR) of each femtocell user on each Physical Resource Block (Physical Resource Block is called for short PRB), computing formula does

${\mathrm{FUE}}_i\left(j\right)=\frac{S_{i,j}^f}{N*{\mathrm{BW}}_j+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}$

Wherein,

For the user receives the signal strength signal intensity of femtocell, i represents macrocellular user sequence number, j represents physical Resource Block sequence number, and 1≤j≤N_PRB, N_PRB are the Physical Resource Block number, N*BW _jBe noise power, N is a noise power spectral density, and the measurement bandwidth is BW _j, Be the descending interference of adjacent femtocell to this femtocell user, ∑ I _mBe the descending interference of macrocell base stations to this femtocell user;

Further calculate each femtocell user's average Signal to Interference plus Noise Ratio according to result of calculation, computing formula does

${\mathrm{FUE}}_i=\frac{\underset{j=1}{\overset{j=N\_\mathrm{PRB}}{\mathrm{\Σ}}}{\mathrm{FUE}}_i\left(j\right)}{N\_\mathrm{PRB}};$

The Signal to Interference plus Noise Ratio of selecting each femtocell user according to each the femtocell user's who calculates average Signal to Interference plus Noise Ratio is lower than the high interference physical resource set of blocks of said average Signal to Interference plus Noise Ratio, chooses formula and does

F_PRB_i＝F{j|FUE _i(j)＜FUE _i}，1≤j≤N_PRB

Wherein, F{} representes set;

Get each femtocell user's high interference Physical Resource Block intersection of sets collection; With the public resource of the public high interference physical resource set of blocks that obtains as each femtocell; Whole available resources of each femtocell are removed remainder behind the said public resource as the privately owned resource of each femtocell, and the computing formula of public resource does

$F\_\mathrm{PRB}\_\mathrm{Public}=\underset{i=1}{\overset{i=N\_\mathrm{FUE}}{\mathrm{\∩}}}F\_\mathrm{PRB}\_i$

Wherein, N_FUE is a femtocell number of users in the femtocell;

The computing formula of privately owned resource does

$F\_\mathrm{PRB}\_\mathrm{Private}=F\{j\∈P|(j\∉F\_\mathrm{PRB}\_\mathrm{Public})\},$ P＝{1，2，3，...N_PRB}。

Further, the operation of the femtocell of candidate's access of said definite corresponding access macrocellular user specifically comprises:

Sort according to each size that inserts the pilot signal receiving intensity of each femtocell that macrocellular user receives;

Confirm the femtocell that each pilot signal receiving intensity maximum that inserts the macrocellular user is corresponding according to ranking results, insert the femtocell of candidate's access of macrocellular user as correspondence.

Further, the said macrocellular user who inserts from the candidate gathers the operation of selecting the macrocellular user to insert said femtocell and specifically comprises:

All macrocellular users in the macrocellular user set that the traversal candidate inserts; The second average Signal to Interference plus Noise Ratio when calculating each macrocellular user respectively and accepting macrocell base stations when service first average Signal to Interference plus Noise Ratio on said public resource and accept femtocell that the candidate inserts and serve on said public resource, the computing formula of the first average Signal to Interference plus Noise Ratio does

$\mathrm{MUE}\_m\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^m}{{N*\mathrm{BW}}_k+\mathrm{\Σ}{I}_f+\mathrm{\Σ}{I}_{m^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from macrocell base stations, p represents macrocellular user sequence number, and k is the sequence number of Physical Resource Block among the public resource set F_PRB_Public, and N_PRB_Public representes can share among the F_PRB_Public Physical Resource Block number of use, ∑ I _fBe the descending interference of femtocell to the macrocellular user,

Be of the descending interference of adjacent macrocellular to the macrocellular user;

The computing formula of the second average Signal to Interference plus Noise Ratio does

$\mathrm{MUE}\_f\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^f}{{N*\mathrm{BW}}_k+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from femtocell, ∑ I _mBe the descending interference of macrocellular to the macrocellular user of access femtocell,

Be the descending interference of the whole femtocells except the target femtocell that inserts to the macrocellular user of access;

The difference Signal to Interference plus Noise Ratio that service is transformed into after femtocell is served as macrocell base stations that calculates the said first average Signal to Interference plus Noise Ratio and the second average Signal to Interference plus Noise Ratio gains, and Signal to Interference plus Noise Ratio Calculation of Gain formula does

MUE_Δ(p)＝MUE_f(p)-MUE_m(p)；

The permission that is chosen at each femtocell inserts the interior bigger macrocellular user of said Signal to Interference plus Noise Ratio gain of macrocellular number of users and inserts the femtocell that said candidate inserts.

For realizing another object of the present invention, the account form that the permission of said femtocell inserts the macrocellular number of users is:

The maximum number of user of said femtocell service is deducted the femtocell number of users of said femtocell current service, and the permission that obtains said femtocell inserts the macrocellular number of users.

Further, the privately owned resource of each femtocell is used by the femtocell user that this femtocell inserts down.

For realizing above-mentioned purpose, the present invention also provides a kind of mixed access system based on the part resource-sharing, comprising:

The resource division module is used to travel through whole available resources of each femtocell, whole available resources of each femtocell is divided into the public resource and the privately owned resource of corresponding each femtocell respectively;

The candidate collection determination module is used for the femtocell that definite corresponding candidate who inserts the macrocellular user inserts, and gathers the macrocellular user set of the candidate's access that obtains corresponding each femtocell;

Insert and select module; Be used for for each femtocell; The macrocellular user who inserts from the candidate gathers and selects the macrocellular user to insert said femtocell, the public resource of the shared corresponding said femtocell of femtocell user that the macrocellular user of access and this femtocell insert down.

Further, also comprise:

Macrocellular user sort module; Be used for the macrocellular user being divided into non-access macrocellular user and inserting two types of macrocellular users according to the pilot signal receiving intensity; Pilot signal receiving intensity RSRP＞RSRP_TH of wherein said non-access macrocellular user; Pilot signal receiving intensity RSRP≤RSRP_TH of said access macrocellular user, RSRP_TH representes pilot signal receiving intensity predetermined threshold value.

Further, said resource division module specifically comprises:

Femtocell travels through the unit, is used to travel through whole available resources of each femtocell;

The Signal to Interference plus Noise Ratio computing unit is used to calculate the Signal to Interference plus Noise Ratio of each femtocell user on each Physical Resource Block, and computing formula does

${\mathrm{FUE}}_i\left(j\right)=\frac{S_{i,j}^f}{{N*\mathrm{BW}}_j+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}$

Wherein,

For the user receives the signal strength signal intensity of femtocell, i represents macrocellular user sequence number, j represents physical Resource Block sequence number, and 1≤j≤N_PRB, N_PRB are the Physical Resource Block number, N*BW _jBe noise power, N is a noise power spectral density, and the measurement bandwidth is BW _j,

Be the descending interference of adjacent femtocell to this femtocell user, ∑ I _mBe the descending interference of macrocell base stations to this femtocell user;

Average Signal to Interference plus Noise Ratio computing unit is used for further calculating according to result of calculation each femtocell user's average Signal to Interference plus Noise Ratio, and computing formula does

${\mathrm{FUE}}_i=\frac{\underset{j=1}{\overset{j=N\_\mathrm{PRB}}{\mathrm{\Σ}}}{\mathrm{FUE}}_i\left(j\right)}{N\_\mathrm{PRB}};$

High interference physical resource set of blocks selected cell; Be used for being lower than the high interference physical resource set of blocks of said average Signal to Interference plus Noise Ratio, choose formula and do according to the Signal to Interference plus Noise Ratio that each femtocell user's of calculating average Signal to Interference plus Noise Ratio is selected each femtocell user

F_PRB_i＝F{j|FUE _i(j)＜FUE _i}，1≤j≤N_PRB

Wherein, F{} representes set;

The resource classification unit; Be used to get each femtocell user's high interference Physical Resource Block intersection of sets collection; With the public resource of the public high interference physical resource set of blocks that obtains as each femtocell; Whole available resources of each femtocell are removed remainder behind the said public resource as the privately owned resource of each femtocell, and the computing formula of public resource does

$F\_\mathrm{PRB}\_\mathrm{Public}=\underset{i=1}{\overset{i=N\_\mathrm{FUE}}{\∩}}F\_\mathrm{PRB}\_i$

Wherein, N_FUE is a femtocell number of users in the femtocell;

The computing formula of privately owned resource does

$F\_\mathrm{PRB}\_\mathrm{Private}=F\{j\∈P|(j\∉F\_\mathrm{PRB}\_\mathrm{Public})\},$ P＝{1，2，3，...N_PRB}。

Further, said candidate collection determination module specifically comprises:

Sequencing unit, the size that is used for inserting according to each the pilot signal receiving intensity of each femtocell that the macrocellular user receives sorts;

The candidate base station selected cell is used for confirming the femtocell that each pilot signal receiving intensity maximum that inserts the macrocellular user is corresponding according to ranking results, inserts the femtocell of candidate's access of macrocellular user as correspondence;

Gather the unit, be used to gather the macrocellular user set of the candidate's access that obtains corresponding each femtocell.

Further, said access selects module specifically to comprise:

The first average Signal to Interference plus Noise Ratio computing module is used for traveling through all macrocellular users of the macrocellular user set that the candidate inserts, the first average Signal to Interference plus Noise Ratio when calculating each macrocellular user and accepting the macrocell base stations service on said public resource, and computing formula does

$\mathrm{MUE}\_m\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^m}{{\mathrm{NBW}}_k+\mathrm{\Σ}{I}_f+\mathrm{\Σ}{I}_{m^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from macrocell base stations, p represents macrocellular user sequence number, and k is the sequence number of Physical Resource Block among the public resource set F_PRB_Public, and N_PRB_Public representes can share among the F_PRB_Public Physical Resource Block number of use, ∑ I _fBe the descending interference of femtocell to the macrocellular user,

Be of the descending interference of adjacent macrocellular to the macrocellular user;

The second average Signal to Interference plus Noise Ratio computing module, the second average Signal to Interference plus Noise Ratio when being used to accept femtocell service that the candidate inserts on said public resource, computing formula does

$\mathrm{MUE}\_f\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^f}{{\mathrm{NBW}}_k+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein, The signal strength signal intensity that expression receives from femtocell, ∑ I _mBe the descending interference of macrocellular to the macrocellular user of access femtocell,

Be the descending interference of the whole femtocells except the target femtocell that inserts to the macrocellular user of access;

Service is transformed into the Signal to Interference plus Noise Ratio gain after the femtocell service as macrocell base stations for Signal to Interference plus Noise Ratio gain calculating unit, the difference that is used to calculate the said first average Signal to Interference plus Noise Ratio and the second average Signal to Interference plus Noise Ratio, and Signal to Interference plus Noise Ratio Calculation of Gain formula does

MUE_Δ(p)＝MUE_f(p)-MUE_m(p)；

The macrocellular user inserts and to choose the unit, is used to be chosen at the bigger macrocellular user of said Signal to Interference plus Noise Ratio gain that the permission of each femtocell inserts in the macrocellular number of users and inserts the femtocell that said candidate inserts.

For realizing another object of the present invention, the account form that said macrocellular user inserts the permission access macrocellular number of users of choosing femtocell in the unit is:

The maximum number of user of said femtocell service is deducted the femtocell number of users of said femtocell current service, and the permission that obtains said femtocell inserts the macrocellular number of users.

Further, the privately owned resource of each femtocell is used by the femtocell user that this femtocell inserts down.

Based on technique scheme, the present invention considers the otherness between the PRB, is public (Public) resource and privately owned (Private) resource with the femtocell partition of available resources.The MUE that inserts femtocell can use this part public resource, makes a part receive the MUE of femtocell serious interference to insert femtocell, improves the channel quality of MUE, thereby under the situation that guarantees the FUE throughput, improves the throughput of MUE; Further, the quantity of the MUE that the quantity adjustment through existing FUE among the femtocell can insert, thereby adapt to the user, professional in time, the scene that changes of place.

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 scene sketch map of disturbance coordination method between the macrocell of existing semi-static channeling and femtocell.

The scene sketch map of macrocell that Fig. 2 divides for existing dynamic frequency and the descending disturbance restraining method of femtocell.

Fig. 3 is the scene sketch map of existing Hybrid Access access scheme.

Fig. 4 is the schematic flow sheet of an embodiment that the present invention is based on the hybrid access method of part resource-sharing.

Fig. 5 is the idiographic flow sketch map that the present invention is based on resource division operation among another embodiment of hybrid access method of part resource-sharing.

Fig. 6 is the idiographic flow sketch map that the present invention is based on candidate base station selection operation among the embodiment again of hybrid access method of part resource-sharing.

Fig. 7 the present invention is based on the idiographic flow sketch map that MUE selects among the another embodiment of hybrid access method of part resource-sharing.

Fig. 8 is the structural representation of an embodiment that the present invention is based on the mixed access system of part resource-sharing.

Fig. 9 is the structural representation of another embodiment that the present invention is based on the mixed access system of part resource-sharing.

Embodiment

Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.

As shown in Figure 4, be the schematic flow sheet of an embodiment of the hybrid access method that the present invention is based on the part resource-sharing.In the present embodiment, the flow process based on the hybrid access method of part resource-sharing specifically may further comprise the steps:

Step 101, travel through whole available resources of each femtocell, whole available resources of each femtocell are divided into the public resource and the privately owned resource of corresponding each femtocell respectively;

Step 102, confirm the femtocell that the corresponding candidate who inserts the macrocellular user inserts, and gather the macrocellular user set that the candidate that obtains corresponding each femtocell inserts;

Step 103, for each femtocell; The macrocellular user who inserts from the candidate gathers and selects the macrocellular user to insert said femtocell, the public resource of the shared corresponding said femtocell of femtocell user that the macrocellular user of access and this femtocell insert down.

In the present embodiment; Whole available frequency resources all can be used in femtocell base station and macrocell base station; With a sub-district is example, if whole resources of this sub-district comprise 50 PRB, then 50 whole PRB all can be used in femtocell base station and macrocell base station.PRB is the smallest allocation unit of downstream frequency resource.

When carrying out the division of available resources, mainly be to consider that PRB with higher interference as public resource, uses when inserting femtocell for MUE.Privately owned resource is then used by the FUE that femtocell inserts down.Can make a part receive the MUE of femtocell serious interference to insert femtocell in this way; Improve the channel quality of MUE; Improve the throughput of MUE, and disturb lower PRB still can to use, thereby can the throughput of FUE not impacted by FUE as privately owned resource and public resource.The privately owned resource that marks off can guarantee that indoor user keeps certain throughput, avoids using the throughput that has influence on FUE because of the MUE that inserts.

The quantity of considering the MUE that is linked into femtocell is limited, therefore can also classify to MUE, confirms to insert MUE and non-access MUE.This sort operation was specially before confirming to insert macrocellular user's access candidate base station: according to RSRP MUE is divided into non-access MUE and inserts two types of MUE:

The first kind is: non-access MUE

Condition is: RSRP＞RSRP_TH

Second type is: insert MUE

Condition is: RSRP≤RSRP_TH

Wherein, RSRP_TH representes the predetermined threshold value of RSRP.And receiving intensity is less, the low preliminary condition that is linked into femtocell as MUE of the availability of frequency spectrum, if these MUE are linked into femtocell, then can effectively improve the availability of frequency spectrum.

As shown in Figure 5, be the idiographic flow sketch map of resource division operation among another embodiment of the hybrid access method that the present invention is based on the part resource-sharing.Compare with a last embodiment, the resource division operation in the present embodiment in the step 101 specifically comprises:

Step 201, calculate the SINR of each FUE on each PRB, computing formula does

${\mathrm{FUE}}_i\left(j\right)=\frac{S_{i,j}^f}{{N*\mathrm{BW}}_j+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}$

Wherein,

For the user receives the signal strength signal intensity of femtocell, i represents the MUE sequence number, and j represents the PRB sequence number, and 1≤j≤N_PRB, N_PRB are the PRB number, N*BW _jBe noise power, N is a noise power spectral density, and the measurement bandwidth is BW _j,

Be the descending interference of adjacent femtocell base station to this FUE, ∑ I _mBe of the descending interference of macrocell base station to this FUE;

Step 202, further calculate the average SINR of each FUE according to result of calculation, computing formula does

${\mathrm{FUE}}_i=\frac{\underset{j=1}{\overset{j=N\_\mathrm{PRB}}{\mathrm{\Σ}}}{\mathrm{FUE}}_i\left(j\right)}{N\_\mathrm{PRB}};$

Step 203, the SINR that selects each FUE according to the average SINR of each FUE of calculating are lower than the high interference PRB set of said average SINR, choose formula and do

F_PRB_i＝F{j|FUE _i(j)＜FUE _i}，1≤j≤N_PRB

Wherein, F{} representes set;

Step 204, get the high interference PRB intersection of sets collection of each FUE; With the public resource of the public high interference PRB set that obtains as each femtocell; Whole available resources of each femtocell are removed remainder behind the said public resource as the privately owned resource of each femtocell, and the computing formula of public resource does

$F\_\mathrm{PRB}\_\mathrm{Public}=\underset{i=1}{\overset{i=N\_\mathrm{FUE}}{\∩}}F\_\mathrm{PRB}\_i$

Wherein, N_FUE is the quantity of FUE among the femtocell;

The computing formula of privately owned resource does

$F\_\mathrm{PRB}\_\mathrm{Private}=F\{j\∈P|(j\∉F\_\mathrm{PRB}\_\mathrm{Public})\},$ P＝{1，2，3，...N_PRB}。

Signal to Interference plus Noise Ratio through each PRB among the step 202-204 recently judges mutually with average Signal to Interference plus Noise Ratio whether PRB is high interference PRB; Confirm the public resource of each femtocell again through the high interference PRB intersection of sets collection of getting each FUE, and then release corresponding privately owned resource again.

Through traveling through all femtocell, the situation that can be directed to different femtocell obtains different Public and Private resource, promptly obtains Public the Resources list and Private the Resources list corresponding to each femtocell.

After resource division; Which the femtocell base station that needs continuation to confirm that the candidate of access MUE inserts has; As shown in Figure 6, be the idiographic flow sketch map of candidate base station selection operation among the embodiment again of the hybrid access method that the present invention is based on the part resource-sharing.In the present embodiment, the candidate base station selection operation specifically comprises:

Step 301, sort according to each size that inserts the RSRP of each femtocell base station that MUE receives;

Step 302, confirm the femtocell base station that each RSRP maximum that inserts MUE is corresponding, insert the femtocell base station that the candidate of MUE inserts as correspondence according to ranking results.

As far as the MUE that inserts, can not ignore is the interference of femtocell, is femtocell pilot tone test tabulation below, as follows:

Wherein, RSRP (p, q) the pilot signal receiving intensity of the femtoq that receives of expression MUEp.In last table; Access MUE to all RSRP≤RSRP_TH; Survey RSRP and the ordering of its all Femtocell that receive; Promptly all femtocell disturb size to sort to MUE, take out the corresponding femtocell sequence number of maximum, then the corresponding femtocell of this MUE mark are inserted as the candidate.

Following table is the Femto that the candidate that selects inserts

In last table, the femtocell base station that the candidate of MUE1 and MUE3 inserts is femto2, and the femtocell base station that the candidate of MUE5 and MUE6 inserts is respectively femto18, femto1, and the MUE4 that is lacked is non-access MUE.

The femtocell base station that each MUE candidate who obtains according to the front inserts, the MUE that can gather candidate's access of each femtocell base station gathers, for example following table

In last table, femto1 has two candidates to insert user MUE23 and MUE6, and femto2 has more than or equal to 3 candidates and inserts the user, MUE3, and MUE2, MUE9 ....

When the MUE that concrete selection inserts; The gain SINR of the MUE that the traversal candidate inserts; Take all factors into consideration the quantity (insert MUE and add that the FUE sum can not surpass the upper limit of the number of users that femtocell can serve) of the MUE that femtocell can insert, select the big MUE access femtocell of a part of SINR of gain.Idiographic flow sketch map as shown in Figure 7, as to select for MUE among the another embodiment of the hybrid access method that the present invention is based on the part resource-sharing.In the present embodiment, the MUE selection operation specifically may further comprise the steps:

All MUE in the MUE set that step 401, traversal candidate insert; The first average SINR when calculating each MUE respectively and accepting the macrocell base station services on public resource is the second average SINR on public resource when accepting femtocell base station services that the candidate inserts, and the computing formula of the first average SINR does

$\mathrm{MUE}\_m\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^m}{{N*\mathrm{BW}}_k+\mathrm{\Σ}{I}_f+\mathrm{\Σ}{I}_{m^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from the macrocell base station, p represents the MUE sequence number, and k is the sequence number of PRB among the public resource set F_PRB_Public, and N_PRB_Public representes can share among the F_PRB_Public PRB number of use, ∑ I _fBe the descending interference of femtocell to MUE,

Be the descending interference of adjacent macrocell to MUE;

The computing formula of the second average SINR does

$\mathrm{MUE}\_f\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^f}{{N*\mathrm{BW}}_k+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from the femtocell base station, ∑ I _mBe the descending interference of macrocell to the MUE of access femtocell,

Be the descending interference of the whole femtocell except the target femtocell base station of inserting to the MUE of access;

Step 402, the difference of calculating the said first average SINR and the second average SINR gain as the SINR that the macrocell base station services is transformed into after the femtocell base station services, and SINR Calculation of Gain formula does

MUE_Δ(p)＝MUE_f(p)-MUE_m(p)；

The MUE_ Δ (p) that obtains is used to weigh MUEp and is linked into femtocell and whether can promotes the availability of frequency spectrum, and to the estimation of increase rate;

The bigger MUE of SINR gain that step 403, the permission that is chosen at each femtocell insert in the quantity of MUE inserts the femtocell that this candidate inserts.

In step 403, the maximum number of user that femtocell can serve is designated as N_max _f, the existing FUE number of users of femtocell is designated as N_FUE _f, then the MUE number of users of this femtocell permission access is N_MUE _f=N_max _f-N_FUE _f(f representes the sequence number of femtocell).The candidate of femtocell is inserted user MUE sort from big to small, N_MUE before selecting according to MUE_ Δ (j) _fThe user inserts, and is promptly having under the prerequisite that inserts restricted number, makes frequency efficiency promote the big access user MUE of amplitude and preferentially inserts.

Through traveling through all femtocell, obtain the access user MUE of each femtocell.

For different femtocell, the MUE number of users that allow to insert maybe be different, can adjust the MUE number of users that allows to insert according to existing FUE quantity simultaneously, thereby adapt to the user, professional in time, the needs of the scene that changes of place.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

Each embodiment all adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that same or analogous part cross-references gets final product between each embodiment.For system embodiment, because it is similar basically with method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.

As shown in Figure 8, be the structural representation of an embodiment of the mixed access system that the present invention is based on the part resource-sharing.In the present embodiment, mixed access system comprises: module 3 is selected in resource division module 1, candidate collection determination module 2 and access.Resource division module 1 is responsible for whole available resources of each femtocell of traversal, whole available resources of each femtocell is divided into the public resource and the privately owned resource of corresponding each femtocell respectively.Candidate collection determination module 2 is responsible for the femtocell that definite corresponding candidate who inserts the macrocellular user inserts, and gathers the macrocellular user set of the candidate's access that obtains corresponding each femtocell.Insert and select module 3 to be responsible for for each femtocell; The macrocellular user who inserts from the candidate gathers and selects the macrocellular user to insert said femtocell, the public resource of the shared corresponding said femtocell of femtocell user that the macrocellular user of access and this femtocell insert down.

Present embodiment is considered the otherness between the PRB, is public (Public) resource and privately owned (Private) resource with the femtocell partition of available resources.The MUE that inserts femtocell can use this part public resource, makes a part receive the MUE of femtocell serious interference to insert femtocell, improves the channel quality of MUE, thereby under the situation that guarantees the FUE throughput, improves the throughput of MUE.

In the present embodiment, the privately owned resource of each femtocell can be used by the femtocell user that this femtocell inserts down.

As shown in Figure 9, be the structural representation of another embodiment of the mixed access system that the present invention is based on the part resource-sharing.Compare with a last embodiment; Present embodiment also comprises macrocellular user MUE sort module 4; This module is responsible for according to the pilot signal receiving intensity macrocellular user being divided into non-access macrocellular user and inserting two types of macrocellular users; Pilot signal receiving intensity RSRP＞RSRP_TH of wherein said non-access macrocellular user, pilot signal receiving intensity RSRP≤RSRP_TH of said access macrocellular user, RSRP_TH representes pilot signal receiving intensity predetermined threshold value.

In the above-described embodiments, the resource division module can specifically comprise:

Femtocell travels through the unit, is used to travel through whole available resources of each femtocell;

The Signal to Interference plus Noise Ratio computing unit is used to calculate the Signal to Interference plus Noise Ratio of each femtocell user on each Physical Resource Block, and computing formula does

${\mathrm{FUE}}_i\left(j\right)=\frac{S_{i,j}^f}{{N*\mathrm{BW}}_j+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}$

Wherein,

For the user receives the signal strength signal intensity of femtocell, i represents macrocellular user sequence number, j represents physical Resource Block sequence number, and 1≤j≤N_PRB, N_PRB are the Physical Resource Block number, N*BW _jBe noise power, N is a noise power spectral density, and the measurement bandwidth is BW _j,

Be the descending interference of adjacent femtocell to this femtocell user, ∑ I _mBe the descending interference of macrocell base stations to this femtocell user;

Average Signal to Interference plus Noise Ratio computing unit is used for further calculating according to result of calculation each femtocell user's average Signal to Interference plus Noise Ratio, and computing formula does

${\mathrm{FUE}}_i=\frac{\underset{j=1}{\overset{j=N\_\mathrm{PRB}}{\mathrm{\Σ}}}{\mathrm{FUE}}_i\left(j\right)}{N\_\mathrm{PRB}};$

High interference physical resource set of blocks selected cell; Be used for being lower than the high interference physical resource set of blocks of said average Signal to Interference plus Noise Ratio, choose formula and do according to the Signal to Interference plus Noise Ratio that each femtocell user's of calculating average Signal to Interference plus Noise Ratio is selected each femtocell user

F_PRB_i＝F{j|FUE _i(j)＜FUE _i}，1≤j≤N_PRB

Wherein, F{} representes set;

The resource classification unit; Be used to get each femtocell user's high interference Physical Resource Block intersection of sets collection; With the public resource of the public high interference physical resource set of blocks that obtains as each femtocell; Whole available resources of each femtocell are removed remainder behind the said public resource as the privately owned resource of each femtocell, and the computing formula of public resource does

$F\_\mathrm{PRB}\_\mathrm{Public}=\underset{i=1}{\overset{i=N\_\mathrm{FUE}}{\∩}}F\_\mathrm{PRB}\_i$

Wherein, N_FUE is a femtocell number of users in the femtocell;

The computing formula of privately owned resource does

$F\_\mathrm{PRB}\_\mathrm{Private}=F\{j\∈P|(j\∉F\_\mathrm{PRB}\_\mathrm{Public})\},$ P＝{1，2，3，...N_PRB}。

The candidate collection determination module can specifically comprise:

Sequencing unit, the size that is used for inserting according to each the pilot signal receiving intensity of each femtocell that the macrocellular user receives sorts;

The candidate base station selected cell is used for confirming the femtocell that each pilot signal receiving intensity maximum that inserts the macrocellular user is corresponding according to ranking results, inserts the femtocell of candidate's access of macrocellular user as correspondence;

Gather the unit, be used to gather the macrocellular user set of the candidate's access that obtains corresponding each femtocell.

Insert and select module specifically to comprise:

The first average Signal to Interference plus Noise Ratio computing module is used for traveling through all macrocellular users of the macrocellular user set that the candidate inserts, the first average Signal to Interference plus Noise Ratio when calculating each macrocellular user and accepting the macrocell base stations service on said public resource, and computing formula does

$\mathrm{MUE}\_m\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^m}{{N*\mathrm{BW}}_k+\mathrm{\Σ}{I}_f+\mathrm{\Σ}{I}_{m^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from macrocell base stations, p represents macrocellular user sequence number, and k is the sequence number of Physical Resource Block among the public resource set F_PRB_Public, and N_PRB_Public representes can share among the F_PRB_Public Physical Resource Block number of use, ∑ I _fBe the descending interference of femtocell to the macrocellular user,

Be of the descending interference of adjacent macrocellular to the macrocellular user;

The second average Signal to Interference plus Noise Ratio computing module, the second average Signal to Interference plus Noise Ratio when being used to accept femtocell service that the candidate inserts on said public resource, computing formula does

$\mathrm{MUE}\_f\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^f}{{N*\mathrm{BW}}_k+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from femtocell, ∑ I _mBe the descending interference of macrocellular to the macrocellular user of access femtocell,

Be the descending interference of the whole femtocells except the target femtocell that inserts to the macrocellular user of access;

Service is transformed into the Signal to Interference plus Noise Ratio gain after the femtocell service as macrocell base stations for Signal to Interference plus Noise Ratio gain calculating unit, the difference that is used to calculate the said first average Signal to Interference plus Noise Ratio and the second average Signal to Interference plus Noise Ratio, and Signal to Interference plus Noise Ratio Calculation of Gain formula does

MUE_Δ(p)＝MUE_f(p)-MUE_m(p)；

The macrocellular user inserts and to choose the unit, is used to be chosen at the bigger macrocellular user of said Signal to Interference plus Noise Ratio gain that the permission of each femtocell inserts in the macrocellular number of users and inserts the femtocell that said candidate inserts.

In a last embodiment; The macrocellular user insert the permission choose femtocell in the unit insert the macrocellular number of users account form can for: the maximum number of user of said femtocell service is deducted the femtocell number of users of said femtocell current service, and the permission that obtains said femtocell inserts the macrocellular number of users.

Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.

Claims (14)

1. hybrid access method based on the part resource-sharing comprises:

Travel through whole available resources of each femtocell, whole available resources of each femtocell are divided into the public resource and the privately owned resource of corresponding each femtocell respectively;

Confirm the femtocell that the corresponding candidate who inserts the macrocellular user inserts, and gather the macrocellular user set that the candidate that obtains corresponding each femtocell inserts;

For each femtocell; The macrocellular user who inserts from the candidate gathers and selects the macrocellular user to insert said femtocell, the public resource of the shared corresponding said femtocell of femtocell user that the macrocellular user of access and this femtocell insert down.

2. method according to claim 1 wherein, before confirming to insert macrocellular user's access candidate base station, also comprises:

According to the pilot signal receiving intensity macrocellular user is divided into non-access macrocellular user and inserts two types of macrocellular users; Pilot signal receiving intensity RSRP＞RSRP_TH of wherein said non-access macrocellular user; Pilot signal receiving intensity RSRP≤RSRP_TH of said access macrocellular user, RSRP_TH representes pilot signal receiving intensity predetermined threshold value.

3. method according to claim 1, wherein, said whole available resources with each femtocell are divided into the public resource of corresponding each femtocell respectively and the operation of privately owned resource specifically comprises:

Calculate the Signal to Interference plus Noise Ratio of each femtocell user on each Physical Resource Block, computing formula does

${\mathrm{FUE}}_i\left(j\right)=\frac{S_{i,j}^f}{N*{\mathrm{BW}}_j+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}$

Wherein, For the user receives the signal strength signal intensity of femtocell, i represents macrocellular user sequence number, j represents physical Resource Block sequence number, and 1≤j≤N_PRB, N_PRB are the Physical Resource Block number, N*BW _jBe noise power, N is a noise power spectral density, and the measurement bandwidth is BW _j,

Be the descending interference of adjacent femtocell to this femtocell user, ∑ I _mBe the descending interference of macrocell base stations to this femtocell user;

Further calculate each femtocell user's average Signal to Interference plus Noise Ratio according to result of calculation, computing formula does

${\mathrm{FUE}}_i=\frac{\underset{j=1}{\overset{j=N\_\mathrm{PRB}}{\mathrm{\Σ}}}{\mathrm{FUE}}_i\left(j\right)}{N\_\mathrm{PRB}};$

The Signal to Interference plus Noise Ratio of selecting each femtocell user according to each the femtocell user's who calculates average Signal to Interference plus Noise Ratio is lower than the high interference physical resource set of blocks of said average Signal to Interference plus Noise Ratio, chooses formula and does

F_PRB_i＝F{j|FUE _i(j)＜FUE _i}，1≤j≤N_PRB

Wherein, F{} representes set;

Get each femtocell user's high interference Physical Resource Block intersection of sets collection; With the public resource of the public high interference physical resource set of blocks that obtains as each femtocell; Whole available resources of each femtocell are removed remainder behind the said public resource as the privately owned resource of each femtocell, and the computing formula of public resource does

$F\_\mathrm{PRB}\_\mathrm{Public}=\underset{i=1}{\overset{i=N\_\mathrm{FUE}}{\mathrm{\∩}}}F\_\mathrm{PRB}\_i$

Wherein, N_FUE is a femtocell number of users in the femtocell; The computing formula of privately owned resource does

$F\_\mathrm{PRB}\_\mathrm{Private}=F\{j\∈P|(j\∉F\_\mathrm{PRB}\_\mathrm{Public})\},$ P＝{1，2，3，...N_PRB}。

4. method according to claim 2, wherein, the operation of the femtocell that said definite corresponding candidate who inserts the macrocellular user inserts specifically comprises:

Sort according to each size that inserts the pilot signal receiving intensity of each femtocell that macrocellular user receives;

Confirm the femtocell that each pilot signal receiving intensity maximum that inserts the macrocellular user is corresponding according to ranking results, insert the femtocell of candidate's access of macrocellular user as correspondence.

5. method according to claim 4, wherein, the said macrocellular user who inserts from the candidate gathers the operation of selecting the macrocellular user to insert said femtocell and specifically comprises:

All macrocellular users in the macrocellular user set that the traversal candidate inserts; The second average Signal to Interference plus Noise Ratio when calculating each macrocellular user respectively and accepting macrocell base stations when service first average Signal to Interference plus Noise Ratio on said public resource and accept femtocell that the candidate inserts and serve on said public resource, the computing formula of the first average Signal to Interference plus Noise Ratio does

$\mathrm{MUE}\_m\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^m}{{N*\mathrm{BW}}_k+\mathrm{\Σ}{I}_f+\mathrm{\Σ}{I}_{m^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from macrocell base stations, p represents macrocellular user sequence number, and k is the sequence number of Physical Resource Block among the public resource set F_PRB_Public, and N_PRB_Public representes can share among the F_PRB_Public Physical Resource Block number of use, ∑ I _fBe the descending interference of femtocell to the macrocellular user,

Be of the descending interference of adjacent macrocellular to the macrocellular user;

The computing formula of the second average Signal to Interference plus Noise Ratio does

$\mathrm{MUE}\_f\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^f}{{\mathrm{NBW}}_k+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from femtocell, ∑ I _mBe the descending interference of macrocellular to the macrocellular user of access femtocell,

Be the descending interference of the whole femtocells except the target femtocell that inserts to the macrocellular user of access;

The difference Signal to Interference plus Noise Ratio that service is transformed into after femtocell is served as macrocell base stations that calculates the said first average Signal to Interference plus Noise Ratio and the second average Signal to Interference plus Noise Ratio gains, and Signal to Interference plus Noise Ratio Calculation of Gain formula does

MUE_Δ(p)＝MUE_f(p)-MUE_m(p)；

The permission that is chosen at each femtocell inserts the interior bigger macrocellular user of said Signal to Interference plus Noise Ratio gain of macrocellular number of users and inserts the femtocell that said candidate inserts.

6. method according to claim 5, wherein, the account form that the permission of said femtocell inserts the macrocellular number of users is:

The maximum number of user of said femtocell service is deducted the femtocell number of users of said femtocell current service, and the permission that obtains said femtocell inserts the macrocellular number of users.

7. method according to claim 1, wherein, the privately owned resource of each femtocell is used by the femtocell user that this femtocell inserts down.

8. mixed access system based on the part resource-sharing comprises:

The resource division module is used to travel through whole available resources of each femtocell, whole available resources of each femtocell is divided into the public resource and the privately owned resource of corresponding each femtocell respectively;

The candidate collection determination module is used for the femtocell that definite corresponding candidate who inserts the macrocellular user inserts, and gathers the macrocellular user set of the candidate's access that obtains corresponding each femtocell;

Insert and select module; Be used for for each femtocell; The macrocellular user who inserts from the candidate gathers and selects the macrocellular user to insert said femtocell, the public resource of the shared corresponding said femtocell of femtocell user that the macrocellular user of access and this femtocell insert down.

9. system according to claim 8 wherein, also comprises:

Macrocellular user sort module; Be used for the macrocellular user being divided into non-access macrocellular user and inserting two types of macrocellular users according to the pilot signal receiving intensity; Pilot signal receiving intensity RSRP＞RSRP_TH of wherein said non-access macrocellular user; Pilot signal receiving intensity RSRP≤RSRP_TH of said access macrocellular user, RSRP_TH representes pilot signal receiving intensity predetermined threshold value.

10. system according to claim 8, wherein, said resource division module specifically comprises:

Femtocell travels through the unit, is used to travel through whole available resources of each femtocell;

The Signal to Interference plus Noise Ratio computing unit is used to calculate the Signal to Interference plus Noise Ratio of each femtocell user on each Physical Resource Block, and computing formula does

${\mathrm{FUE}}_i\left(j\right)=\frac{S_{i,j}^f}{{\mathrm{NBW}}_j+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}$

Wherein,

For the user receives the signal strength signal intensity of femtocell, i represents macrocellular user sequence number, j represents physical Resource Block sequence number, and 1≤j≤N_PRB, N_PRB are the Physical Resource Block number, N*BW _jBe noise power, N is a noise power spectral density, and the measurement bandwidth is BW _j,

Be the descending interference of adjacent femtocell to this femtocell user, ∑ I _mBe the descending interference of macrocell base stations to this femtocell user;

Average Signal to Interference plus Noise Ratio computing unit is used for further calculating according to result of calculation each femtocell user's average Signal to Interference plus Noise Ratio, and computing formula does

${\mathrm{FUE}}_i=\frac{\underset{j=1}{\overset{j=N\_\mathrm{PRB}}{\mathrm{\Σ}}}{\mathrm{FUE}}_i\left(j\right)}{N\_\mathrm{PRB}};$

High interference physical resource set of blocks selected cell; Be used for being lower than the high interference physical resource set of blocks of said average Signal to Interference plus Noise Ratio, choose formula and do according to the Signal to Interference plus Noise Ratio that each femtocell user's of calculating average Signal to Interference plus Noise Ratio is selected each femtocell user

F_PRB_i＝F{j|FUE _i(j)＜FUE _i}，1≤j≤N_PRB

Wherein, F{} representes set;

The resource classification unit; Be used to get each femtocell user's high interference Physical Resource Block intersection of sets collection; With the public resource of the public high interference physical resource set of blocks that obtains as each femtocell; Whole available resources of each femtocell are removed remainder behind the said public resource as the privately owned resource of each femtocell, and the computing formula of public resource does

$F\_\mathrm{PRB}\_\mathrm{Public}=\underset{i=1}{\overset{i=N\_\mathrm{FUE}}{\∩}}F\_\mathrm{PRB}\_i$

Wherein, N_FUE is a femtocell number of users in the femtocell;

The computing formula of privately owned resource does

$F\_\mathrm{PRB}\_\mathrm{Private}=F\{j\∈P|(j\∉F\_\mathrm{PRB}\_\mathrm{Public})\},$ P＝{1，2，3，...N_PRB}。

11. system according to claim 9, wherein, said candidate collection determination module specifically comprises:

Sequencing unit, the size that is used for inserting according to each the pilot signal receiving intensity of each femtocell that the macrocellular user receives sorts;

The candidate base station selected cell is used for confirming the femtocell that each pilot signal receiving intensity maximum that inserts the macrocellular user is corresponding according to ranking results, inserts the femtocell of candidate's access of macrocellular user as correspondence;

Gather the unit, be used to gather the macrocellular user set of the candidate's access that obtains corresponding each femtocell.

12. system according to claim 11, wherein, said access selects module specifically to comprise:

The first average Signal to Interference plus Noise Ratio computing module is used for traveling through all macrocellular users of the macrocellular user set that the candidate inserts, the first average Signal to Interference plus Noise Ratio when calculating each macrocellular user and accepting the macrocell base stations service on said public resource, and computing formula does

$\mathrm{MUE}\_m\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^m}{{\mathrm{NBW}}_k+\mathrm{\Σ}{I}_f+\mathrm{\Σ}{I}_{m^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein,

The signal strength signal intensity that expression receives from macrocell base stations, p represents macrocellular user sequence number, and k is the sequence number of Physical Resource Block among the public resource set F_PRBvPublic, and N_PRB_Public representes can share among the F_PRB_Public Physical Resource Block number of use, ∑ I _fBe the descending interference of femtocell to the macrocellular user,

Be of the descending interference of adjacent macrocellular to the macrocellular user;

The second average Signal to Interference plus Noise Ratio computing module, the second average Signal to Interference plus Noise Ratio when being used to accept femtocell service that the candidate inserts on said public resource, computing formula does

$\mathrm{MUE}\_f\left(p\right)=\frac{\underset{k\∈F\_\mathrm{PRB}\_\mathrm{public}}{\mathrm{\Σ}}\frac{S_{p,k}^f}{{\mathrm{NBW}}_k+\mathrm{\Σ}{I}_m+\mathrm{\Σ}{I}_{f^{*}}}}{N\_\mathrm{PRB}\_\mathrm{Public}}$

Wherein, The signal strength signal intensity that expression receives from femtocell, ∑ I _mBe the descending interference of macrocellular to the macrocellular user of access femtocell,

Be the descending interference of the whole femtocells except the target femtocell that inserts to the macrocellular user of access;

Service is transformed into the Signal to Interference plus Noise Ratio gain after the femtocell service as macrocell base stations for Signal to Interference plus Noise Ratio gain calculating unit, the difference that is used to calculate the said first average Signal to Interference plus Noise Ratio and the second average Signal to Interference plus Noise Ratio, and Signal to Interference plus Noise Ratio Calculation of Gain formula does

MUE_Δ(p)＝MUE_f(p)-MUE_m(p)；

The macrocellular user inserts and to choose the unit, is used to be chosen at the bigger macrocellular user of said Signal to Interference plus Noise Ratio gain that the permission of each femtocell inserts in the macrocellular number of users and inserts the femtocell that said candidate inserts.

13. system according to claim 12, wherein, the account form that said macrocellular user inserts the permission access macrocellular number of users of choosing femtocell in the unit is:

The maximum number of user of said femtocell service is deducted the femtocell number of users of said femtocell current service, and the permission that obtains said femtocell inserts the macrocellular number of users.

14. method according to claim 8, wherein, the privately owned resource of each femtocell is used by the femtocell user that this femtocell inserts down.

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