CN102142871A - Improved channel sounding reference signal transmitting method and system - Google Patents

Abstract

The invention discloses an improved channel sounding reference signal (SRS) transmitting method. The method comprises the following steps that: first user equipment generates a channel sounding reference signal with the bandwidth greater than or equal to 12 resource blocks and transmits the channel sounding reference signal to a base station. The invention also discloses an improved channel sounding reference signal transmitting system. The system comprises a radio network controller, the base station and the first user equipment, wherein the radio network controller is used for setting an edge user dedicated group number and a non-edge user dedicated group number of each base station; the base station is used for judging whether the first user equipment is an edge user or a non-edge user and distributing corresponding edge user dedicated group number or non-edge user dedicated group number to the first user equipment; and the first user equipment is used for generating the channel sounding reference signal with the bandwidth greater than or equal to 12 resource blocks and transmitting the channel sounding reference signal to the base station. The technical scheme of the invention can reduce interferences among a plurality of user channel sounding reference signals of a plurality of cells.

Description

A kind of improved channel detection signaling method and system

Technical field

The present invention relates to wireless communication technology field, particularly a kind of improved channel detection signaling method and system.

Background technology

Channel detection signal (SRS, Sounding Reference Signal) be arranged in the reference signal usually, be a kind of terminal equipment (UE, User Equipment) with base station (eNB, e-Node-B) be used for measuring the signal of radio channel information (CSI, Channel State Information) between.In Long Term Evolution (LTE, Long Term Evolution) system, the transmitting-receiving process that realizes SRS based on the application scenarios of single sub-district comprises the steps: as shown in Figure 1

Step 101:UE indicates according to eNB, the timed sending uplink SRS; The bandwidth of SRS is 4 Resource Block (RB, Resource Block);

Step 102:eNB judges the up CSI of UE according to the SRS that receives;

Step 103:eNB carries out operations such as frequency selection scheduling, closed power control according to the CSI that obtains.

In the LTE system, the SRS that the different UEs of same sub-district sends uses different running time-frequency resources, but because the restriction of running time-frequency resource capacity, the UE of different districts sends SRS may use identical video resource.The problem that signal disturbs can not appear between the SRS that the different UEs of same sub-district sends.

Follow-up evolution (the LTE-A of LTE technology, LTE-Advanced) requirement higher than LTE proposed up-downgoing speed, descending peak rate 1Gbps, up peak rate 500Mbps, up-downgoing peaks spectrum utilance reaches 15Mbps/Hz and 30Mbps/Hz respectively.In order to satisfy above-mentioned technical indicator, LTE-A adopts following key technology, comprises carrier aggregation, multipoint cooperative transmission (CoMP), relay transmission, the enhancing of many antennas etc.

When multipoint cooperative transmission (CoMP) networking, need the channel condition information between acquisition UE and a plurality of cooperation cell, therefore, for LTE-A CoMP UE, need the participation of intercepting of many sub-districts, and the mechanism of the SRS among the LTE is not considered the application of SRS between many sub-districts.

As shown in Figure 2, sub-district 1 (cell1) and sub-district 2 (cell2) adopts CoMP technology common service UE1, and UE1 utilizes the up-downgoing channel reciprocity by sending SRS, and cell1 and cell2 can intercept SRS, obtain the corresponding downstream channel condition information.Owing to do not have other user among the cell1, so cell1 can obtain channel information accurately; And other user among the cell2 (UE2, UE3, UE4) is simultaneously also sending SRS, and other users send that running time-frequency resource that SRS uses may to send the running time-frequency resource that SRS uses identical with UE1.Cumulative distribution function (CDF by the correlation of Fig. 3, CumulativeDistribution Function) curve as can be seen, in LTE, high correlation between the SRS that different length, different root sequence generate, when therefore cell2 receives the SRS of UE1, may exist other users to send the strong jamming that SRS causes, the channel condition information of acquisition is inaccurate, has also just influenced the performance of CoMP.Therefore, need improve, make it adapt to the needs of multi-point cooperative transmission applied environment the scheme of SRS.

Summary of the invention

In view of this, the objective of the invention is to, propose a kind of improved channel detection signaling method and system, can reduce the interference between many sub-districts multiuser channel detectable signal (SRS).

A kind of improved channel detection signaling method that the embodiment of the invention proposes comprises the steps:

First subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station.

Preferably, described first subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and before the base station sends described channel detection signal, further comprises:

Radio network controller is provided with the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each base station;

The base station judges that described first subscriber equipment is that edge customer also is non-edge customer, if edge customer, then in the special-purpose group number of the untapped edge customer in this sub-district, choose the special-purpose group number of an edge customer, and the special-purpose group number of selected edge customer is distributed to described first subscriber equipment; If non-edge customer is then chosen a special-purpose group number of non-edge customer in the special-purpose group number of the untapped non-edge customer in this sub-district, and the special-purpose group number of selected non-edge customer is distributed to described first subscriber equipment;

Described first subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station and be:

First subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station.

Described base station judges that described first subscriber equipment is that edge customer also is that non-edge customer is: when the relevant arrowband transmitted power RNTP of first subscriber equipment that the base station end records surpasses thresholding, first subscriber equipment is edge customer, otherwise first subscriber equipment is non-edge customer.

Special-purpose group number of edge customer and the special-purpose group number of non-edge customer that described radio network controller is provided with each base station comprise:

Radio network controller calculates the required minimum edge customer dedicated set number in each sub-district;

The minimum edge customer dedicated set number that radio network controller is required according to described each sub-district calculates edge customer dedicated set number and non-edge customer dedicated set number under the macrocellular networking situation;

Radio network controller distributes the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each sub-district according to described macrocellular networking situation lower limb user's dedicated set number and non-edge customer dedicated set number, wherein, the special-purpose group number of the edge customer of different districts differs from one another.

The number of cells that participates in the macrocellular networking is 7.

The required minimum edge customer dedicated set number in each sub-district is 6, and the edge customer dedicated set number under the macrocellular networking situation is 42, and non-edge customer dedicated set number is 28.

The bandwidth that described first subscriber equipment generates is more than or equal to 12 Resource Block (m _{SRS, RB}〉=12) channel detection signal is:

$r^{\mathrm{SRS}}\left(n\right)=r_{u,v}^{\left(a\right)}\left(n\right),0\&le;n<M_{\mathrm{sc}}^{\mathrm{RS}}---\left(10\right)$

Wherein, r _{U, v} ^(α)(n) be by a basic sequence r _{U, v}(n) cyclic shift α obtains, basic sequence r _{U, v}(n) be defined as follows: $r_{u,v}^{\left(a\right)}\left(n\right)=e^{\mathrm{jan}}{\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right),0\&le;n<M_{\mathrm{sc}}^{\mathrm{RS}},$ Wherein u is sequence-group number, and v is a basic sequence number; The cyclic shift value α of interception reference signal is defined as: $\mathrm{\&alpha;}=2\mathrm{\&pi;}\frac{n_{\mathrm{SRS}}^{\mathrm{cs}}}{8},$ n _SRS ^CsBe the value of giving each user device configuration by radio network controller, and $n_{\mathrm{SRS}}^{\mathrm{cs}}=\mathrm{0,1,2,3,4,5,6,7};$

M _Sc ^RSBe that channel detection signal SRS sequence generates length, it is defined as $M_{\mathrm{sc}}^{\mathrm{RS}}={\mathrm{mN}}_{\mathrm{sc}}^{\mathrm{RB}},$ N wherein _Sc ^RBThe subcarrier number of representing each Resource Block, m represents the shared resource of channel detection signal SRS sequence (do not comprise frequency dredge clear position) piece number, because the SRS sequence shine upon every a subcarrier spacing, frequency is thin to be 2, m _{SRS, RB}Shared whole resources (comprising the frequency clear position) the piece number of expression SRS, therefore, m=m _{SRS, RB}/ 2, its span is $1\&le;m\&le;N_{\mathrm{RB}}^{\max ,\mathrm{UL}}/2,$ N _RB ^{Max, UL}Represent up direction number of resource blocks purpose maximum.

Described basic sequence r _{U, v}(n) be divided into a plurality of groups, wherein u represents group number, when $M_{\mathrm{sc}}^{\mathrm{RS}}<6N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}<12)$ The time, u ∈ 0,1 ..., 29}, when $M_{\mathrm{sc}}^{\mathrm{RS}}\&GreaterEqual;6N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}\&GreaterEqual;12)$ The time, u ∈ 0,1 ..., 69}, v are the basic sequences number (v=0,1) in the group;

When $M_{\mathrm{sc}}^{\mathrm{RS}}<3N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}<6)$ The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

When $M_{\mathrm{sc}}^{\mathrm{RS}}=2N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}=4),$ Motif is classified as

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=e^{\mathrm{j\&phi;}\left(n\right)\mathrm{\&pi;}/4},0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}}-1;---\left(11\right)$

When $6N_{\mathrm{sc}}^{\mathrm{RB}}>M_{\mathrm{sc}}^{\mathrm{RS}}\&GreaterEqual;3N_{\mathrm{sc}}^{\mathrm{RB}}(12>m_{\mathrm{SRS},\mathrm{RB}}\&GreaterEqual;6)$ The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=x_q\left(n\mathrm{mod}{N}_{\mathrm{ZC}}^{\mathrm{RS}}\right),0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}};\left(12\right)$

The q of ZC sequence wherein ^ThIndividual root is

$x_q\left(l\right)=e^{-j\frac{\mathrm{\&pi;ql}(l+1)}{N_{\mathrm{ZC}}^{\mathrm{RS}}}},0\&le;l{\&le;N}_{\mathrm{ZC}}^{\mathrm{RS}}-1;---\left(13\right)$ Q is

$\stackrel{\&OverBar;}{q}=N_{\mathrm{ZC}}^{\mathrm{RS}}\&CenterDot;(u+1)/31;---\left(14\right)$ The length N of ZC sequence _ZC ^RSBe to satisfy condition $N_{\mathrm{ZC}}^{\mathrm{RS}}<M_{\mathrm{sc}}^{\mathrm{RS}}$ Largest prime number;

When $M_{\mathrm{sc}}^{\mathrm{RS}}\&GreaterEqual;6N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}\&GreaterEqual;12)$ The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=x_q\left(n\mathrm{mod}{N}_{\mathrm{ZC}}^{\mathrm{RS}}\right),0\&le;n<M_{\mathrm{sc}}^{\mathrm{RS}};---\left(15\right)$

The q of ZC sequence wherein ^ThIndividual root is

$x_q\left(l\right)=e^{-j\frac{\mathrm{\&pi;ql}(l+1)}{N_{\mathrm{ZC}}^{\mathrm{RS}}}},0\&le;l\&le;N_{\mathrm{ZC}}^{\mathrm{RS}}-1---\left(16\right)$ Q is

$\stackrel{\&OverBar;}{q}=N_{\mathrm{ZC}}^{\mathrm{RS}}\&CenterDot;(u+1)/71$ The length N of ZC sequence _ZC ^RSBe to satisfy condition $N_{\mathrm{ZC}}^{\mathrm{RS}}<M_{\mathrm{sc}}^{\mathrm{RS}}$ Largest prime number.

Formula (11) r _{U, v}(n)=e ^{J φ (n) π/4}, $0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}}-1$ In

Value provide by following table:

。

The embodiment of the invention also proposes a kind of improved channel detection signal sending system, comprises radio network controller, base station and first subscriber equipment,

Described radio network controller is used to be provided with the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each base station;

Described base station is used to judge that described first subscriber equipment is that edge customer also is non-edge customer, if edge customer, then in the special-purpose group number of the untapped edge customer in this sub-district, choose the special-purpose group number of an edge customer, and the special-purpose group number of selected edge customer is distributed to described first subscriber equipment; If non-edge customer is then chosen a special-purpose group number of non-edge customer in the special-purpose group number of the untapped non-edge customer in this sub-district, and the special-purpose group number of selected non-edge customer is distributed to described first subscriber equipment;

Described first subscriber equipment is used to generate the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station.

Described base station judges that described first subscriber equipment is that edge customer also is that non-edge customer is: when the relevant arrowband transmitted power RNTP of first subscriber equipment that the base station end records surpasses thresholding, first subscriber equipment is edge customer, otherwise first subscriber equipment is non-edge customer.

Special-purpose group number of edge customer and the special-purpose group number of non-edge customer that described radio network controller is provided with each base station comprise:

Radio network controller calculates the required minimum edge customer dedicated set number in each sub-district;

The minimum edge customer dedicated set number that radio network controller is required according to described each sub-district calculates edge customer dedicated set number and non-edge customer dedicated set number under the macrocellular networking situation;

Radio network controller distributes the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each sub-district according to described macrocellular networking situation lower limb user's dedicated set number and non-edge customer dedicated set number, wherein, the special-purpose group number of the edge customer of different districts differs from one another.

The number of cells that participates in the macrocellular networking is 7.

The required minimum edge customer dedicated set number in each sub-district is 6, and the edge customer dedicated set number under the macrocellular networking situation is 42, and non-edge customer dedicated set number is 28.

As can be seen from the above technical solutions, by improving the bandwidth of channel detection burst, can reduce the correlation between the channel detection burst, thereby reduce the interference between the multi-user SRS of many sub-districts.On this basis, for make increase SRS sequence bandwidth after the sub-district still have enough SRS capacity, the present invention program has also comprised the scheme that the special-purpose group number of edge customer and the special-purpose group number of non-edge customer are distributed.

Description of drawings

Fig. 1 is a transmitting-receiving flow chart of realizing SRS in the prior art based on the application scenarios of single sub-district;

The SRS that Fig. 2 sends for multipoint cooperative transmission user equipment is subjected to the schematic diagram of the SRS interference of other subscriber equipmenies transmissions;

Fig. 3 is the CDF curve between the SRS that generates of different length in the prior art, different root sequence; Wherein, 4﹠amp; 4 expression bandwidth are the CDF curve between the SRS sequence of 4RB and the SRS sequence that bandwidth is 4RB, 4﹠amp; 8 expression bandwidth are the CDF curve between the SRS sequence of 4RB and the SRS sequence that bandwidth is 8RB, and other by that analogy;

Fig. 4 is the CDF curve between the different SRS of the embodiment of the invention; Wherein, 12﹠amp; 12 expression bandwidth are the CDF curve between the SRS sequence of 12RB and the SRS sequence that bandwidth is 12RB, 12﹠amp; 24 expression bandwidth are the CDF curve between the SRS sequence of 12RB and the SRS sequence that bandwidth is 24RB, and other by that analogy.

Embodiment

The scheme of the embodiment of the invention one is by the minimum bandwidth of raising SRS sequence, thus the correlation between the reduction SRS sequence, and many sub-districts multi-user SRS disturbs among the LTE-A CoMP thereby realize reducing.

The cross-correlation function of two sequences can be expressed as

$R_{\mathrm{cross}}=|\frac{1}{N}\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{a}_i\&CenterDot;{b_i}^H|---\left(1\right)$

Wherein, and a1, a2 ..., aN} and b1, b2 ..., bN} represents the overlapping part of two Zadoff-off sequences (ZC sequence), N represents the number that the ZC sequence is overlapping.In general, the length of sequence is long more, and then the correlation between two sequences is more little.Therefore, can increase bandwidth that the SRS sequence takies and reduce correlation between the SRS sequence that different UEs sends.Need determine how many times are the bandwidth that the SRS sequence takies reach by l-G simulation test, can make the correlation between the different SRS sequences little to being not enough to cause strong interference.

To newly-designed SRS sequence, if the bandwidth of this SRS sequence is carried out emulation more than or equal to 12 Resource Block (RB) to the cross correlation under the situation of different group numbers, different sequence length, different frequency domains overlapping region.Being illustrated in figure 4 as bandwidth is the CDF figure of SRS sequence and the correlation of bandwidth between the SRS sequence more than the 12RB of 12RB, and as can be seen from the figure, the correlation between 90% the group number is less than 0.18.Therefore, in 12RB and above SRS sequence, adopt the SRS sequence of different group numbers generations for bandwidth, correlation each other is very little, can satisfy the accurate orthogonality between the SRS sequence.The bandwidth of the SRS sequence of described bandwidth more than 12RB can be the integral multiple of 12RB, for example 24RB, 36RB, 48RB......84RB etc.

Like this, by SRS sequence minimum bandwidth among the restriction LTE-A CoMP is 12RB, subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and send described channel detection signal to the base station, the feasible different user that takies the different districts of identical running time-frequency resource, use different group numbers when generating, reach the accurate orthogonality between the SRS sequence, can reduce the interference of SRS between the multi-user of many sub-districts by the SRS sequence.

Regulation in 3GPP TR 36.913V8.0.1 (2009-03) (being designated hereinafter simply as 36.913), the shared bandwidth range of LTE should be less than 5MHz, (DRX, in the time of DiscontinuousReception), each sub-district is supported the user of 300 activation at least discontinuous reception.Also should support this condition among the LTE-A so.For this reason, suppose that the UE in the sub-district adopts identical SRS bandwidth and cycle, the SRS capacity is defined as follows:

Wherein, N _CSRepresent the number of available cycle offset (cyclic shifts), N _CThe=2nd, frequency domain at interval.In LTE, the movement velocity of considering UE is 10km/h, be 10ms correlation time, system SRS bandwidth (System SRS BW) is 5MHz (being equivalent to 24 RB), the special-purpose SRS bandwidth of UE (UE SpecificSRS BW) is 4RB, because the delay of typical urban (TU, Typical Urban) channel expansion, therefore, N _CS=4, in LTE, 1 group number is only used in each sub-district, group number (group Numbers) (being the sum of group number)=1, uplink antenna is only considered 1, uplink antenna number (UlAntNum)=1, the SRS capacity that calculates thus is: 24/4*4*2*10/1*1/1=480 user, in LTE, under the situation of up employing single antenna, be to satisfy 36.913 capacity requirement.

Yet, in LTE-A, because up transmitting antenna has been increased to 4, and to consider MU-MIMO, therefore, if adopt the design of SRS among the LTE, the capacity of SRS will become 480/ (4*2)=60 user so, 2 users are considered in the wherein many input and output of multi-user (MU-MIMO, multiuser multiple-inputmultiple-output).If consider to use SRS as the foundation of selecting frequently, the special-purpose SRS bandwidth of UE is 24RB so, and when the LTE single antenna sent, the SRS capacity that calculates was 80 users.Therefore, the SRS of present existing LTE design can't be satisfied the capacity requirement of SRS among the LTE-A.Therefore need to consider that the SRS that strengthens designs the capacity requirement that satisfies SRS among the LTE-A.

Scheme according to the aforementioned embodiment of the invention one, the bandwidth of SRS sequence is set to more than the 12RB, though reached the purpose that reduces the SRS serial correlation, but because the problem of the SRS off-capacity that the increase of SRS sequence minimum bandwidth causes among the LTE-A CoMP can not satisfy MU-MIMO among the LTE-A, the CoMP requirement to the SRS capacity.

In the scheme of the embodiment of the invention two, except restriction SRS sequence minimum bandwidth is 12RB, adopt new SRS sequence generating method, to organize number and bring up to 70, consider the scene of MU-MIMO and CoMP coexistence, 70 group numbers are divided into special-purpose group number of Cell Edge User and the special-purpose group number of the non-edge customer in sub-district.Wherein, Cell Edge User is defined as when NodeB holds this user's who records relevant arrowband transmitted power (RNTP, Relative Narrowband TX Power) to surpass thresholding, and this user is Cell Edge User, do not surpass thresholding, then this user is the non-edge customer in sub-district.

The user who supposes MU-MIMO is not or not the edge of sub-district, when the macrocellular networking, because non-edge customer can not produce the SRS interference to adjacent sub-district in the sub-district, therefore can use the special-purpose group number of identical non-edge customer between the sub-district, and because the SRS of Cell Edge User can produce interference to adjacent sub-district, therefore, the user who belongs to different adjacent sub-districts can not use identical edge customer group number.

Step 1 calculates the quantity required of the special-purpose group number of each Cell Edge User, promptly for each sub-district, and the minimum group number that needs to distribute several Cell Edge User special uses.Below provide a kind of specific implementation:

Because minimum SRS bandwidth is brought up to 12 RB by 4RB, has improved 3 times, the capacity that therefore needs 3 extra group numbers to solve to cause thus reduces 1/3 problem, is about to 3 group numbers and distributes to 3 users that take identical running time-frequency resource; During the CoMP networking, the channel quality of Cell Edge User is poor, generally can not adopt 4 antenna multiplexed situations, considers 2 transmitting antennas here, and therefore, each user needs 2 group numbers to satisfy up 2 quasi-orthogonal requirements of antenna transmission SRS.Reach a conclusion thus: the special-purpose group number of the edge customer of each sub-district is 6, can satisfy the demand of Cell Edge User.

Step 2: calculate required edge customer dedicated set number and non-edge customer dedicated set number under the macrocellular networking situation.

Consideration realizes the macrocellular networking by 7 sub-districts, and 7 sub-districts need the special-purpose group number of 6 * 7=42 edge customer altogether so, can satisfy the demand of the SRS capacity of 7 Cell Edge User.Remaining 28 group number can be used as the special-purpose group number of the non-edge customer in sub-district.

Step 3: the SRS capacity that calculates the non-edge customer of SRS capacity and sub-district of a Cell Edge User.

At first calculate the SRS capacity of a Cell Edge User.Suppose UE in the sub-district all at cell edge, and adopt identical SRS bandwidth and cycle, calculate the SRS capacity according to formula (2).Since the delay of TU channel expansion, therefore, N _CS=4, N _CThe=2nd, frequency domain at interval.System SRS bandwidth is 5MHz (24RB), the special-purpose SRS bandwidth of UE is 12RB, the group number is 6, the uplink antenna number is 2, the SRS capacity that calculates thus is: 24/12*4*2*10/1*6/2=480 user, therefore in LTE-A CoMP, under the situation of 2 antennas of the up employing of Cell Edge User, can satisfy the capacity requirement of 36.913 SRS.

Analyze the SRS capacity of the non-edge customer in sub-district again:

Suppose UE in the sub-district all in the position at non-edge, sub-district, and adopt identical SRS bandwidth and cycle that the SRS capacity is defined as follows:

Since the delay of TU channel expansion, therefore, N _CS=4, N _CThe=2nd, frequency domain at interval.System SRS bandwidth is that 5MHz is 5MHz (24RB), the special-purpose SRS bandwidth of UE is that 12RB is 12RB, group number=28, the uplink antenna number is=4 (in LTE-A, up transmitting antenna has been increased to 4), MIMO number of users=2, the SRS capacity that calculates thus is: 24/12*4*2*10/1*28/ (4*2)=560 user, therefore in LTE-A CoMP, 4 antennas of the up employing of the non-edge customer in sub-district, MU-MIMO adopts under 2 users' the situation, can satisfy the capacity requirement of 36.913 SRS.

In sum, by 70 group numbers of making rational planning for,, identical for each sub-district comprising 28 special-purpose group numbers of non-edge customer; 42 special-purpose group numbers of edge customer, 6 of each sub-districts, the special-purpose group number difference of the edge customer of different districts.Can satisfy the capacity requirement of 36.913 SRS among the LTE-A.

For the ease of understanding, table 1 example the collocation method of the solution disturbed between a kind of SRS capacity and the many sub-districts multi-user SRS.It is pointed out that content shown in the table 1 only is used for the present invention program is described, not in order to limit the present invention.

Cell number	The special-purpose group number of edge customer	The special-purpose group number of non-edge customer
			Sub-district 1	28、29、30、 31、32、33	0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、 18、19、20、21、22、23、24、25、26、27
Sub-district 2	34、35、36、 37、38、39	0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、 18、19、20、21、22、23、24、25、26、27
			Sub-district 3	40、41、42、 43、44、45	0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、 18、19、20、21、22、23、24、25、26、27
Sub-district 4	46、47、48、 49、50、51	0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、 18、19、20、21、22、23、24、25、26、27
			Sub-district 5	52、53、54、 55、56、57	0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、 18、19、20、21、22、23、24、25、26、27
Sub-district 6	58、59、60、 61、62、63	0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、 18、19、20、21、22、23、24、25、26、27
			Sub-district 7	64、65、66、 67、68、69	0、1、2、3、4、5、6、7、8、9、10、11、12、13、14、15、16、17、 18、19、20、21、22、23、24、25、26、27

Table 1

The embodiment of the invention also proposes a kind of improved channel detection signal sending system, comprises radio network controller, base station and subscriber equipment.According to the general knowledge of wireless communication field as can be known, radio network controller is controlled a more than base station usually, corresponding at least one sub-district, each base station, and in each sub-district more than one subscriber equipment can be arranged.

Described radio network controller is used to be provided with the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each base station;

Described base station is used to judge that first subscriber equipment in this sub-district is that edge customer also is non-edge customer, if edge customer, then in the special-purpose group number of the untapped edge customer in this sub-district, choose the special-purpose group number of an edge customer, and the special-purpose group number of selected edge customer is distributed to described first subscriber equipment; If non-edge customer is then chosen a special-purpose group number of non-edge customer in the special-purpose group number of the untapped non-edge customer in this sub-district, and the special-purpose group number of selected non-edge customer is distributed to described first subscriber equipment;

Described first subscriber equipment is used to generate the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station.

Described base station judges that described first subscriber equipment is that edge customer also is that non-edge customer is: when the RNTP of first subscriber equipment that the base station end records surpassed thresholding, first subscriber equipment was edge customer, otherwise first subscriber equipment is non-edge customer.

Special-purpose group number of edge customer and the special-purpose group number of non-edge customer that described radio network controller is provided with each base station comprise:

Radio network controller calculates the required minimum edge customer dedicated set number in each sub-district;

The minimum edge customer dedicated set number that radio network controller is required according to described each sub-district calculates edge customer dedicated set number and non-edge customer dedicated set number under the macrocellular networking situation;

Radio network controller distributes the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each sub-district according to described macrocellular networking situation lower limb user's dedicated set number and non-edge customer dedicated set number, wherein, the special-purpose group number of the edge customer of different districts differs from one another.

For spirit and the technique effect of understanding the embodiment of the invention more, below again the specific design scheme of SRS in the embodiment of the invention is described in detail.Embodiment of the invention scheme is on the basis of the SRS of existing LTE sequences Design, has made the modification of basic sequence definition and the modification of group number scope.For the ease of understanding embodiment of the invention scheme, at first the SRS sequences Design scheme in the prior LTE system is introduced.

In the LTE system, SRS sequences Design method is as follows:

$r^{\mathrm{SRS}}\left(n\right)=r_{u,v}^{\left(a\right)}\left(n\right),0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{SRS}}---\left(4\right)$

Wherein, n represents subcarrier label, r ^SRS(n) expression, M _Sc ^SRSExpression SRS formation sequence length.Make m _{SRS, RB}Shared Resource Block (RB, the Resource Block) number of expression SRS, N _Sc ^RBThe subcarrier number of representing each RB considers that the SRS sequence shines upon every a subcarrier spacing, and it is 2 that frequency is dredged, and therefore actual SRS formation sequence length is $M_{\mathrm{sc}}^{\mathrm{SRS}}=m_{\mathrm{SRS},\mathrm{RB}}{N}_{\mathrm{sc}}^{\mathrm{RB}}/2.$ r _{U, v} ^(α)(n) be by a basic sequence r _{U, v}(n) cyclic shift α obtains, and is defined as follows:

$r_{u,v}^{\left(a\right)}\left(n\right)=e^{\mathrm{jan}}{\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right),0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}},---\left(5\right)$

Wherein u is sequence-group number, and v is a basic sequence number.The cyclic shift of interception reference signal $a=2\mathrm{\&pi;}\frac{n_{\mathrm{SRS}}^{\mathrm{cs}}}{8},$ n _SRS ^CsGive each UE configuration by the upper strata, and $n_{\mathrm{SRS}}^{\mathrm{cs}}=\mathrm{0,1,2,3,4,5,6,7},$ A plurality of reference signal sequences can calculate with different α values by basic sequence.M _Sc ^RSBe the shared subcarrier number of reference signal sequence, it is defined as $M_{\mathrm{sc}}^{\mathrm{RS}}=m{N}_{\mathrm{sc}}^{\mathrm{RB}},$ N wherein _Sc ^RBThe subcarrier number of representing each RB, m represents the RB number that reference signal is shared.Because it is 2 that the frequency of SRS sequence is dredged, therefore exist $M_{\mathrm{sc}}^{\mathrm{SRS}}=M_{\mathrm{sc}}^{\mathrm{RS}}$ Condition under, following relation of plane: m=m is arranged _{SRS, RB}/ 2, its span is $1\&le;m\&le;N_{\mathrm{RB}}^{\max ,\mathrm{UL}}/2.$ Basic sequence r _{U, v}(n) be divided into a plurality of groups, wherein u ∈ 0,1 ..., 29} is a group number, v be the group in basic sequence number (v=0,1).Group number u and basic sequence v will change along with the variation of time.Basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) definition relies on sequence length M _Sc ^RS

1, when $M_{\mathrm{sc}}^{\mathrm{RS}}<3N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}<6)$ The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

When $M_{\mathrm{sc}}^{\mathrm{RS}}=2N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}=4),$ Motif is classified as

${\stackrel{\&OverBar;}{r}}_{u,v}=e^{\mathrm{j\&phi;}\left(n\right)\mathrm{\&pi;}/4},0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}}-1---\left(6\right)$

Wherein

Value by table 2 $(M_{\mathrm{sc}}^{\mathrm{RS}}=2N_{\mathrm{s\; c}}^{\mathrm{RB}})$ Provide.

2, when $M_{\mathrm{sc}}^{\mathrm{RB}}\&GreaterEqual;3N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}\&GreaterEqual;6)$ The time, basic sequence r _{U, v}(0) .., r _{U, v}(M _Sc ^RS-1) be defined as follows:

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=x_q\left(n\mathrm{mod}{N}_{\mathrm{ZC}}^{\mathrm{RS}}\right),0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}}---\left(7\right)$

The q of Zadoff-Chu sequence wherein ^ThIndividual root is

$x_q\left(l\right)=e^{-j\frac{\mathrm{\&pi;ql}(l+1)}{N_{\mathrm{ZC}}^{\mathrm{RS}}}},0\&le;l\&le;N_{\mathrm{ZC}}^{\mathrm{RS}}-1---\left(8\right)$ Q is

$\stackrel{\&OverBar;}{q}=N_{\mathrm{ZC}}^{\mathrm{RS}}\&CenterDot;(u+1)/31---\left(9\right)$

The length N of Zadoff-Chu sequence _ZC ^RSBe $N_{\mathrm{ZC}}^{\mathrm{RS}}<M_{\mathrm{sc}}^{\mathrm{RS}}$ The prime number of maximum.

Table 2: $M_{\mathrm{sc}}^{\mathrm{RS}}=2N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}=4)$ The time

The SRS sequence of embodiment of the invention scheme definition is as follows:

$r^{\mathrm{SRS}}\left(n\right)r_{u,v}^{\left(a\right)}\left(n\right),0\&le;n{\&le;M}_{\mathrm{sc}}^{\mathrm{RS}}---\left(10\right)$

Wherein, r _{U, v} ^(α)(n) be by a basic sequence r _{U, v}(n) cyclic shift α obtains, and is defined as follows: $r_{u,v}^{\left(a\right)}\left(n\right)=e^{\mathrm{jan}}{\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right),0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}},$ Wherein u is sequence-group number, and v is a basic sequence number.The cyclic shift value α of interception reference signal is defined as: $\mathrm{\&alpha;}=2\mathrm{\&pi;}\frac{n_{\mathrm{SRS}}^{\mathrm{cs}}}{8},n_{\mathrm{SRS}}^{\mathrm{cs}}$ Be the value of giving each UE configuration by RNC, and $n_{\mathrm{SRS}}^{\mathrm{cs}}=\mathrm{0,1,2,3,4,5,6,7}.$

M _Sc ^RSBe that channel detection signal SRS sequence generates length, it is defined as $M_{\mathrm{sc}}^{\mathrm{RS}}=m{N}_{\mathrm{sc}}^{\mathrm{RB}},$ N wherein _Sc ^RBThe subcarrier number of representing each Resource Block, m represents the shared resource of channel detection signal SRS sequence (do not comprise frequency dredge clear position) piece number, because the SRS sequence shine upon every a subcarrier spacing, frequency is thin to be 2, m _{SRS, RB}Shared whole resources (comprising the frequency clear position) the piece number of expression SRS, therefore, m=m _{SRS, RB/}2, its span is $1\&le;m{\&le;N}_{\mathrm{RB}}^{\max ,\mathrm{UL}}/2,$ N _RB ^{Max, UL}Represent up direction number of resource blocks purpose maximum.A plurality of reference signal sequences can calculate with different α values by basic sequence.

Basic sequence r _{U, v}(n) be divided into a plurality of groups, wherein u represents group number, when $M_{\mathrm{sc}}^{\mathrm{RS}}<6N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}<12)$ The time, u ∈ 0,1 ..., 29}, when $M_{\mathrm{sc}}^{\mathrm{RS}}\&GreaterEqual;6N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}\&GreaterEqual;12)$ The time, u ∈ 0,1 ..., 69}, v are the basic sequences number (v=0,1) in the group.Group number u and basic sequence v will change along with the variation of time.Basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) definition relies on sequence length M _Sc ^RS

1) when $M_{\mathrm{sc}}^{\mathrm{RS}}<3N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}<6)$ The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

When $M_{\mathrm{sc}}^{\mathrm{RS}}=2N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}=4),$ Motif is classified as

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=e^{\mathrm{j\&phi;}\left(n\right)\mathrm{\&pi;}/4},0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}}-1---\left(11\right)$

Wherein

Value by table 1 $(M_{\mathrm{sc}}^{\mathrm{RS}}=2N_{\mathrm{sc}}^{\mathrm{RB}})$ Provide.

2) when $6N_{\mathrm{sc}}^{\mathrm{RB}}>M_{\mathrm{sc}}^{\mathrm{RS}}\&GreaterEqual;3N_{\mathrm{sc}}^{\mathrm{RB}}(12>m_{\mathrm{SRS},\mathrm{RB}}\&GreaterEqual;6)$ The time, basic sequence r _{U, v}(0) .., r _{U, v}(M _Sc ^RS-1) be defined as follows:

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=x_q\left(n\mathrm{mod}{N}_{\mathrm{ZC}}^{\mathrm{RS}}\right),0\&le;n{<M}_{\mathrm{sc}}^{\mathrm{RS}}---\left(12\right)$

The q of Zadoff-Chu sequence wherein ^ThIndividual root is

$x_q\left(l\right)=e^{-j\frac{\mathrm{\&pi;ql}(l+1)}{N_{\mathrm{ZC}}^{\mathrm{RS}}}},0\&le;L{\&le;N}_{\mathrm{ZC}}^{\mathrm{RS}}-1---\left(13\right)$ Q is

$\stackrel{\&OverBar;}{q}=N_{\mathrm{ZC}}^{\mathrm{RS}}\&CenterDot;(u+1)/31---\left(14\right)$

The length N of Zadoff-Chu sequence _ZC ^RSBe to satisfy condition $N_{\mathrm{ZC}}^{\mathrm{RS}}<M_{\mathrm{sc}}^{\mathrm{RS}}$ Largest prime number.

3) when $M_{\mathrm{sc}}^{\mathrm{RS}}\&GreaterEqual;6N_{\mathrm{sc}}^{\mathrm{RB}}(m_{\mathrm{SRS},\mathrm{RB}}\&GreaterEqual;12)$ The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=x_q\left(n\mathrm{mod}{N}_{\mathrm{ZC}}^{\mathrm{RS}}\right),0\&le;n<M_{\mathrm{sc}}^{\mathrm{RS}}---\left(15\right)$

The q of Zadoff-Chu sequence wherein ^ThIndividual root is

$x_q\left(l\right)=e^{\&CenterDot;j\frac{\mathrm{\&pi;ql}(l+1)}{N_{\mathrm{ZC}}^{\mathrm{RS}}}},0\&le;l{\&le;N}_{\mathrm{ZC}}^{\mathrm{RS}}-1---\left(16\right)$ Q is

$\stackrel{\&OverBar;}{q}=N_{\mathrm{ZC}}^R\&CenterDot;(u+1)/71$

The length N of Zadoff-Chu sequence _ZC ^RSBe to satisfy condition $N_{\mathrm{ZC}}^{\mathrm{RS}}<M_{\mathrm{sc}}^{\mathrm{RS}}$ Largest prime number.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (14)

1. an improved channel detection signaling method is characterized in that, comprises the steps:

First subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station.

2. method according to claim 1 is characterized in that, described first subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and before the base station sends described channel detection signal, further comprises:

Radio network controller is provided with the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each base station;

The base station judges that described first subscriber equipment is that edge customer also is non-edge customer, if edge customer, then in the special-purpose group number of the untapped edge customer in this sub-district, choose the special-purpose group number of an edge customer, and the special-purpose group number of selected edge customer is distributed to described first subscriber equipment; If non-edge customer is then chosen a special-purpose group number of non-edge customer in the special-purpose group number of the untapped non-edge customer in this sub-district, and the special-purpose group number of selected non-edge customer is distributed to described first subscriber equipment;

Described first subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station and be:

First subscriber equipment generates the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station.

3. method according to claim 2, it is characterized in that, described base station judges that described first subscriber equipment is that edge customer also is that non-edge customer is: when the relevant arrowband transmitted power RNTP of first subscriber equipment that the base station end records surpasses thresholding, first subscriber equipment is edge customer, otherwise first subscriber equipment is non-edge customer.

4. method according to claim 2 is characterized in that, special-purpose group number of edge customer and the special-purpose group number of non-edge customer that described radio network controller is provided with each base station comprise:

Radio network controller calculates the required minimum edge customer dedicated set number in each sub-district;

The minimum edge customer dedicated set number that radio network controller is required according to described each sub-district calculates edge customer dedicated set number and non-edge customer dedicated set number under the macrocellular networking situation;

Radio network controller distributes the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each sub-district according to described macrocellular networking situation lower limb user's dedicated set number and non-edge customer dedicated set number, wherein, the special-purpose group number of the edge customer of different districts differs from one another.

5. method according to claim 4 is characterized in that, the number of cells that participates in the macrocellular networking is 7.

6. method according to claim 5 is characterized in that, the required minimum edge customer dedicated set number in each sub-district is 6, and the edge customer dedicated set number under the macrocellular networking situation is 42, and non-edge customer dedicated set number is 28.

7. method according to claim 6 is characterized in that, the bandwidth that described first subscriber equipment generates more than or equal to the channel detection signal of 12 Resource Block is:

$r^{\mathrm{SRS}}\left(n\right)=r_{u,v}^{\left(\mathrm{\&alpha;}\right)}\left(n\right),0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}};$

Wherein, r _{U, v} ^(α)(n) be by a basic sequence r _{U, v}(n) cyclic shift α obtains, basic sequence r _{U, v}(n) be defined as follows:

Wherein u is sequence-group number, and v is a basic sequence number; The cyclic shift value α of interception reference signal is defined as:

n _SRS ^CsBe the value of giving each user device configuration by radio network controller, and

M _Sc ^RSBe that channel detection signal SRS sequence generates length, it is defined as N wherein _Sc ^RBThe subcarrier number of representing each Resource Block, m represents the shared Resource Block number of channel detection signal SRS sequence, span is

N _RB ^{Max, UL}Represent up direction number of resource blocks purpose maximum.

8. method according to claim 7 is characterized in that, described basic sequence r _{U, v}(n) be divided into a plurality of groups, wherein u represents group number, when

The time, u ∈ 0,1 ..., 29}, when

The time, u ∈ 0,1 ..., 69}, v are the basic sequences number (v=0,1) in the group;

When The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

When

Motif is classified as

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=e^{\mathrm{j\&phi;}\left(n\right)\mathrm{\&pi;}/4},0\&le;n\&le;M_{\mathrm{sc}}^{\mathrm{RS}}-1;$

When

The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=x_q\left({n\mathrm{mod}N}_{\mathrm{ZC}}^{\mathrm{RS}}\right),0\&le;n<M_{\mathrm{sc}}^{\mathrm{RS}};$

The q of ZC sequence wherein ^ThIndividual root is

$x_q\left(l\right)=e^{-j\frac{\mathrm{\&pi;ql}(l+1)}{N_{\mathrm{ZC}}^{\mathrm{RS}}}},0\&le;l\&le;N_{\mathrm{ZC}}^{\mathrm{RS}}-1;$

Q is

$\stackrel{\&OverBar;}{q}=N_{\mathrm{ZC}}^{\mathrm{RS}}\&CenterDot;(u+1)/31;$

The length N of ZC sequence _ZC ^RSBe to satisfy condition

Largest prime number;

When

The time, basic sequence r _{U, v}(0) ..., r _{U, v}(M _Sc ^RS-1) be defined as follows:

${\stackrel{\&OverBar;}{r}}_{u,v}\left(n\right)=x_q\left({n\mathrm{mod}N}_{\mathrm{ZC}}^{\mathrm{RS}}\right),0\&le;n<M_{\mathrm{sc}}^{\mathrm{RS}};$

The q of ZC sequence wherein ^ThIndividual root is

$x_q\left(l\right)=e^{-j\frac{\mathrm{\&pi;ql}(l+1)}{N_{\mathrm{ZC}}^{\mathrm{RS}}}},0\&le;l\&le;N_{\mathrm{ZC}}^{\mathrm{RS}}-1;$

Q is

$\stackrel{\&OverBar;}{q}=N_{\mathrm{ZC}}^{\mathrm{RS}}\&CenterDot;(u+1)/71$

The length N of ZC sequence _ZC ^RSBe to satisfy condition

Largest prime number.

9. method according to claim 8 is characterized in that, formula r _{U, v}(n)=e ^{J φ (n) π/4},

In

Value provide by following table:

10. an improved channel detection signal sending system comprises radio network controller, base station and first subscriber equipment, it is characterized in that,

Described radio network controller is used to be provided with the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each base station;

Described base station is used to judge that described first subscriber equipment is that edge customer also is non-edge customer, if edge customer, then in the special-purpose group number of the untapped edge customer in this sub-district, choose the special-purpose group number of an edge customer, and the special-purpose group number of selected edge customer is distributed to described first subscriber equipment; If non-edge customer is then chosen a special-purpose group number of non-edge customer in the special-purpose group number of the untapped non-edge customer in this sub-district, and the special-purpose group number of selected non-edge customer is distributed to described first subscriber equipment;

Described first subscriber equipment is used to generate the channel detection signal of bandwidth more than or equal to 12 Resource Block, and sends described channel detection signal to the base station.

11. system according to claim 10, it is characterized in that, described base station judges that described first subscriber equipment is that edge customer also is that non-edge customer is: when the relevant arrowband transmitted power RNTP of first subscriber equipment that the base station end records surpasses thresholding, first subscriber equipment is edge customer, otherwise first subscriber equipment is non-edge customer.

12. system according to claim 10 is characterized in that, special-purpose group number of edge customer and the special-purpose group number of non-edge customer that described radio network controller is provided with each base station comprise:

Radio network controller calculates the required minimum edge customer dedicated set number in each sub-district;

The minimum edge customer dedicated set number that radio network controller is required according to described each sub-district calculates edge customer dedicated set number and non-edge customer dedicated set number under the macrocellular networking situation;

Radio network controller distributes the special-purpose group number of edge customer and the special-purpose group number of non-edge customer of each sub-district according to described macrocellular networking situation lower limb user's dedicated set number and non-edge customer dedicated set number, wherein, the special-purpose group number of the edge customer of different districts differs from one another.

13. system according to claim 12 is characterized in that, the number of cells that participates in the macrocellular networking is 7.

14. system according to claim 13 is characterized in that, the required minimum edge customer dedicated set number in each sub-district is 6, and the edge customer dedicated set number under the macrocellular networking situation is 42, and non-edge customer dedicated set number is 28.

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