CN101340232B - Transmission method and network appliance for multimedia broadcast multicast service - Google Patents

Abstract

The invention discloses a transmission method for multimedia broadcast and multicast service (MBMS), which includes the following steps: according to the principle that a channel has the strongest independence, spatial channels for transmitting the MBMS service in various periods of time are determined; on a spatial channel corresponding to each period of time, the MBMS service data is sent to a receiving terminal. The invention also discloses a network device which is used for transmitting the MBMS service. By adopting the technical proposal of the invention, the transmission property of the MBMS service can be effectively improved, and the coverage area of MBMS districts can be further enlarged.

Description

A kind of transmission method of multimedia broadcast-multicast service and the network equipment

Technical field

The present invention relates to the data transmission technology in the mobile communication, relate in particular to the transmission method and the network equipment of a kind of multimedia broadcasting and multicast service (MBMS).

Background technology

The rapid growth of the widely-used and mobile communication subscriber quantity of the fast development of mobile communication technology, mobile communications network makes the MBMS technology become one of hot spot technology in the present mobile communications network.MBMS is based on the technology of mobile communication cell net system, and it can realize the multimedia service multicast and the broadcasting of two-forty, thereby realizes sharing of Internet resources, and is that the media user of same requirements as much as possible provides service with the least possible resource.

When MBMS transmission was professional, if adopt broadcast mode, network side was broadcasted to the cell range at receiving terminal place through the MBMS business datum that broadcast channel will transmit; If adopt the multicast mode, network side sends to the MBMS data group that needs the professional a plurality of receiving terminals of this MBMS to form simultaneously through broadcast channel.Then, obtain to come from the signal of network side through reception antenna, after resolving, recover the MBMS business datum as the subscriber equipment (UE) of receiving terminal.

Compare with the general data of on broadcast channel, transmitting, MBMS traffic transmission speed is higher, and correspondingly, receiving terminal can correctly recover the required signal to noise ratio of MBMS business datum (SINR) also than the general data height.Yet the downlink resource of network side is limited, can't sufficiently high down transmitting power be provided for the professional high-speed transfer of MBMS, so the signal to noise ratio of the professional transmission of MBMS is lower than the signal to noise ratio of transmission general data on the broadcast channel.Therefore, existing MBMS business transmitting method makes MBMS traffic transmission performance be starkly lower than the transmission performance of general data on the broadcast channel.

Summary of the invention

In view of this, the present invention provides a kind of MBMS business transmitting method, can improve MBMS traffic transmission performance effectively.

In MBMS business transmitting method of the present invention, may further comprise the steps:

According to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; On the space channel of each time period correspondence, send the MBMS business datum to receiving terminal.

Preferably, the professional space channel of said definite each time period MBMS transmission is:

All that confirm number of transmit antennas and transmitting antenna put in order, and definite channel coefficient correlation reduces the factor;

Measure all coefficient correlations between per two width of cloth transmitting antennas that put in order down, and the coefficient correlation of utilizing determined channel coefficient correlation to reduce the factor and measure, calculate all transmitting antenna average correlation coefficients under putting in order;

The professional transmitting antenna order of transmitting of MBMS is confirmed as in minimum the putting in order of average correlation coefficient, and each transmitting antenna in this transmitting antenna order is confirmed as corresponding transmitting antenna of each time period successively.

Preferably,, all transmitting antenna average correlation coefficients under putting in order of said calculating are:

If the coefficient correlation between two adjacent transmission antennas is ρ, the transmitting antenna average correlation coefficient under the x kind puts in order is ρ _x, then ${\mathrm{\ρ}}_x=\frac{1}{N}(\underset{k=2}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}^{|A_k-A_{k-1}|}+\mathrm{\γ}\underset{j=3}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}^{|A_j-A_{j-2}|}),$ Wherein N is a number of transmit antennas, and γ reduces the factor for the channel coefficient correlation, Be the coefficient correlation between k width of cloth transmitting antenna and (k-1) width of cloth transmitting antenna,

It is the coefficient correlation between j width of cloth transmitting antenna and (j-2) width of cloth transmitting antenna.

Preferably, the professional space channel of said definite each time period MBMS transmission is: select transmitting antenna at random for each time period in advance, perhaps before each time period begins, select corresponding transmitting antenna of next time period at random.

Preferably, the professional space channel of said definite each time period MBMS transmission is:

Confirm transmitting antenna sum and the number of transmit antennas of same time period, from all transmitting antennas, choose, obtain many group emitting antenna combination according to the number of transmit antennas of same time period;

Measure the coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination; Calculate the average correlation coefficient of each emitting antenna combination, and with the average correlation coefficient less than the emitting antenna combination of the correlation thresholding that sets in advance as the candidate transmitting combination of antennas;

The candidate transmitting combination of antennas that average correlation coefficient is minimum is as the emitting antenna combination of current slot, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination;

Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; Select the minimum candidate transmitting combination of antennas of coefficient correlation as the emitting antenna combination of next time period, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period.

Preferably, the professional space channel of said definite each time period MBMS transmission is:

Select the transmitting antenna of initial time section;

In time period after the initial time section; Measure through up channel; Estimate the channel impulse response on the every width of cloth transmitting antenna of current slot; Calculate corresponding transmitting antenna of current slot and the channel impulse response coefficient correlation between all the other transmitting antennas, and the emitting antenna selecting that the channel impulse response coefficient correlation is minimum is the transmitting antenna of next time period.

Preferably, transmitting antenna that said calculating current slot is corresponding and the channel impulse response coefficient correlation between all the other transmitting antennas are:

If transmitting antenna and the channel impulse response coefficient correlation between all the other transmitting antennas that current slot is corresponding are γ _Ij, then ${\mathrm{\γ}}_{\mathrm{Ij}}=\frac{E[h_i*h_j]-E\left[h_i\right]*E\left[h_j\right]}{\sqrt{E\left[{h_i}^2\right]-E^2\left[h_i\right]}*\sqrt{E\left[{h_j}^2\right]-E^2\left[h_j\right]}},$ H wherein _iBe the channel impulse response of the corresponding transmitting antenna of current slot, h _jBe the channel impulse response of j width of cloth transmitting antenna, operator E representes to ask for covariance, and 1≤j≤N.

Preferably, the professional space channel of said definite each time period MBMS transmission is:

Confirm transmitting antenna sum and the number of transmit antennas of same time period, from all transmitting antennas, choose, obtain many group emitting antenna combination according to the number of transmit antennas of same time period;

Measure through up channel, estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and calculate the channel impulse response coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination;

According to the channel impulse response coefficient correlation of calculating; Calculate the average channel impulse response coefficient correlation of all emitting antenna combination; With average channel impulse response coefficient correlation less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; The candidate transmitting combination of antennas that average channel impulse response coefficient correlation is minimum is as the emitting antenna combination of current slot, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination;

Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; Select the minimum candidate transmitting combination of antennas of coefficient correlation as the emitting antenna combination of next time period, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period.

Preferably, saidly send the MBMS business datum to receiving terminal and be:

When current slot finishes, stop the corresponding transmitting antenna of current slot, with next time period as current slot, start corresponding transmitting antenna, as the current emission antenna, and utilize should current transmitting antenna MBMS transmission business.

Preferably, saidly send the MBMS business datum to receiving terminal and be:

When current slot finishes, stop the corresponding transmitting antenna of current slot, with next time period as current slot, start corresponding transmitting antenna, as the current emission antenna, and utilize the corresponding code channel MBMS transmission of this current transmitting antenna professional.

Preferably, this method further comprises: be each MBMS traffic assignments priority in advance;

The said corresponding code channel of current emission antenna that in current slot, utilizes transmits before the said MBMS business, further comprises:

A11. judge said MBMS business on the current emission antenna corresponding code channel in current slot whether by professional use of the higher MBMS of priority, if, process ends then; Otherwise, carry out the said corresponding code channel of current emission antenna that in current slot, utilizes and transmit said MBMS business.

Preferably, before the said steps A 11, further comprise:

Judge whether there is the higher MBMS business of priority that in current slot, to transmit on the current emission antenna, if then carry out said steps A 11; Otherwise, carry out the said corresponding code channel of current emission antenna that in current slot, utilizes and transmit said MBMS business.

Preferably, said stopping further to comprise before the corresponding transmitting antenna of current slot:

A101. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A102 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A102. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding transmitting antenna of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 101, if no show is then directly returned and carried out said steps A 101.

Preferably, said stopping further to comprise before the corresponding transmitting antenna of current slot:

A201. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A202 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A202. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding transmitting antenna of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 201, if no show is then directly returned and carried out said steps A 201.

Preferably, the professional space channel of said definite each time period MBMS transmission is:

The number of antennas that comprises in every group of wave beam is set,, from all transmitting antennas, chooses, obtain a plurality of antenna grouping, and form the transmitting antenna grouping set according to set number of transmit antennas;

Utilize predetermined all weights that each antenna grouping in the antenna grouping set is carried out beam forming processing, obtain many group wave beams;

In the mutual compensation principle of the gain of same angle, confirm the wave beam order between adjacent two wave beams of foundation, and each wave beam in this wave beam order is confirmed as corresponding wave beam of each time period successively.

Preferably, the professional space channel of said definite each time period MBMS transmission is:

The number of antennas that comprises in every group of wave beam is set,, from all transmitting antennas, chooses, obtain a plurality of antenna grouping, and form the transmitting antenna grouping set according to set number of transmit antennas;

Utilize predetermined all weights that each antenna grouping in the antenna grouping set is carried out beam forming processing, obtain many group wave beams;

According to the wave beam number of predetermined same time period, select wave beam to form the beam combination of current slot, each wave beam in this beam combination compensates in the gain of same angle each other, and is the code channel of each the beam allocation non-overlapping copies in this beam combination;

The wave beam of selecting to compensate each other in the gain of same angle with the beam combination of current slot is formed the beam combination of next time period and is the code channel of each the beam allocation non-overlapping copies in this beam combination.

Preferably, saidly send the MBMS business datum to receiving terminal and be:

When current slot finishes, stop the corresponding wave beam of current slot, with next time period as current slot, start corresponding wave beam, as current wave beam, and utilize deserve before the corresponding code channel MBMS transmission of wave beam professional.

Preferably, this method further comprises: be each MBMS traffic assignments priority in advance;

Before the said MBMS transmission business, further comprise:

A21. judge said MBMS business the corresponding code channel of current wave beam in current slot whether by professional use of the higher MBMS of priority, if, process ends then; Otherwise, carry out the corresponding code channel MBMS transmission business that preceding wave beam is deserved in said utilization.

Preferably, before the said steps A 21, further comprise:

Judge whether there is the higher MBMS business of priority that in current slot, to transmit in the current wave beam, if then carry out said steps A 21; Otherwise, carry out the said code channel of current wave beam and said correspondence that in current slot, utilizes and transmit said MBMS business.

Preferably, said stopping further to comprise before the corresponding wave beam of current slot:

A301. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A302 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A302. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding transmitting antenna of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 201, if no show is then directly returned and carried out said steps A 301.

Preferably, the said time period is time slot, subframe or radio frames.

The present invention also provides a kind of MBMS of being used for the network equipment of professional transmission, can improve MBMS traffic transmission performance effectively.

In the network equipment of the present invention, comprising: MBMS scheduler module, memory module and communication module, wherein,

Said MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional; Determined spatial channel information is sent to memory module; When each time period arrives, from memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module;

Said memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission;

Said communication module receives the corresponding spatial channel information of current slot that the MBMS scheduler module is sent; From memory module, read the MBMS business datum; And the MBMS business datum that reads is carried on the corresponding space channel of current slot, send to receiving terminal.

Preferably, said MBMS scheduler module comprises: measure submodule, control submodule and timer, wherein,

Said measurement submodule confirm number of transmit antennas and transmitting antenna all put in order, measure all coefficient correlations between per two width of cloth transmitting antennas that put in order down, and the coefficient correlation that obtains sent to the control submodule;

Said control submodule confirms that the channel coefficient correlation reduces the factor; Reception comes from the coefficient correlation between per two width of cloth transmitting antennas of measuring submodule; The coefficient correlation that reduces the factor and receive according to determined coefficient correlation; Calculate all transmitting antenna average correlation coefficients under putting in order, the transmitting antenna order of the professional transmission of MBMS is confirmed as in minimum the putting in order of average correlation coefficient, and determined transmitting antenna is sent to memory module in proper order; Under the indication of timer, from memory module, read current slot corresponding transmitting antenna information and MBMS business datum, the MBMS business datum that reads is sent to communication module, the notification communication module is carried out the transmitting antenna saltus step;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Preferably, said MBMS scheduler module comprises: measure submodule, control submodule and timer, wherein,

Said measurement submodule is confirmed transmitting antenna sum and the number of transmit antennas of same time period; Form many group emitting antenna combination according to the number of transmit antennas of same time period; Measure the coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination, and the coefficient correlation that obtains is sent to the control submodule;

Said control submodule receives and comes from the coefficient correlation between per two width of cloth transmitting antennas of measuring submodule; Calculate the average correlation coefficient of all emitting antenna combination; The candidate transmitting combination of antennas that average correlation coefficient is minimum is as the emitting antenna combination of current slot; And be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; The candidate transmitting combination of antennas of selection coefficient correlation minimum is the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period as the emitting antenna combination of next time period, and the emitting antenna combination of determined each time period is sent to memory module with corresponding code channel information; Under the indication of timer; From memory module, read current slot corresponding emitting antenna combination information, corresponding code channel information and MBMS business datum; The MBMS business datum that reads is sent to communication module, and the emitting antenna combination that the emitting antenna combination that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quits work;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Preferably, said MBMS scheduler module comprises measures submodule, control submodule and timer, wherein,

Said measurement submodule is measured through up channel, estimates the channel impulse response on the every width of cloth transmitting antenna of current slot, and the estimated channel impulse response that goes out is sent to the control submodule;

Said control submodule receives from the channel impulse response of measuring submodule; Calculate corresponding transmitting antenna of current slot and the channel impulse response coefficient correlation between all the other transmitting antennas; The emitting antenna selecting that the channel impulse response coefficient correlation is minimum is a corresponding transmitting antenna of next time period, and the transmitting antenna information that next time period is corresponding sends to memory module; Under the indication of timer, from memory module, read current slot corresponding transmitting antenna information and MBMS business datum, the MBMS data that read are sent to communication module, and the notification communication module is carried out the transmitting antenna saltus step;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Preferably, said MBMS scheduler module comprises measures submodule, control submodule and timer, wherein,

Said measurement submodule is confirmed transmitting antenna sum and the number of transmit antennas of same time period; Form many group emitting antenna combination according to the number of transmit antennas of same time period; Measure through up channel; Estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and the estimated channel impulse response that goes out is sent to the control submodule;

Said control submodule receives from the channel impulse response of measuring submodule; Calculate the channel impulse response coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination; Calculate the average channel impulse response coefficient correlation of all emitting antenna combination; With average channel impulse response coefficient correlation less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; The candidate transmitting combination of antennas that average channel impulse response coefficient correlation is minimum is as the emitting antenna combination of current slot; And be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; The candidate transmitting combination of antennas of selection coefficient correlation minimum is the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period as the emitting antenna combination of next time period, and determined emitting antenna combination information and corresponding code channel information are sent to memory module; And under the indication of timer; From memory module, read the code channel information and the MBMS business datum of the corresponding emitting antenna combination information of current slot, correspondence; The MBMS data that read are sent to communication module, and the emitting antenna combination that the emitting antenna combination that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quit work;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Preferably, said communication module comprises at least two width of cloth transmitting antennas, and said transmitting antenna conjunction measuring submodule carries out the measurement of coefficient correlation between transmitting antenna; Under the notice of said control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

Preferably, said communication module comprises at least two width of cloth transmitting antennas, and said transmitting antenna conjunction measuring submodule carries out up channel and measures; Under the notice of said control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

Preferably, said MBMS scheduler module comprises: control submodule and timer, wherein,

Said control submodule reads many group wave beam information from memory module; Confirm the gain of every group of wave beam on all angles through emulation; In the mutual compensation principle of the gain of same angle, confirm the wave beam order according to adjacent two wave beams, and determined wave beam is sent to memory module in proper order; Under the indication of timer, from said memory module, read current slot corresponding wave beam information and MBMS business datum, the MBMS data that read are sent to communication module, and the notification communication module is carried out the wave beam switching;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Preferably, said memory module is further preserved transmitting antenna information and the corresponding weights that comprise in the every group of wave beam that is provided with in advance;

Said communication module comprises: wave beam forms submodule and at least two width of cloth transmitting antennas, wherein,

Said wave beam forms submodule and from memory module, reads transmitting antenna information and the corresponding weights that comprise in every group of wave beam, obtains the transmitting antenna grouping set according to the transmitting antenna information that reads; The weights that utilization reads carry out beam forming processing to each antenna grouping in the antenna grouping set, obtain many group wave beams, and the wave beam information that obtains is sent to memory module; Reception comes from the MBMS business datum of controlling submodule; Notice according to the control submodule; Form the corresponding wave beam of current slot; And the MBMS business datum that receives sent to the transmitting antenna in the wave beam that forms, perhaps, the transmitting antenna in the corresponding wave beam of a time period quits work in the control under the notice of control submodule;

Said transmitting antenna receives and comes from the MBMS business datum that said wave beam forms submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the control of said wave beam formation submodule, quits work.

Preferably, said MBMS scheduler module comprises: control submodule and timer, wherein,

Said control submodule reads many group wave beam information and the wave beam number of same time period from memory module; Confirm of the gain of each wave beam through emulation in same angle; According to the gain principle of complementarity; Select the beam combination of current slot; Be the code channel of each the beam allocation non-overlapping copies in this beam combination, and the beam combination of selection and current slot forms the beam combination of next time period and be the code channel of each the beam allocation non-overlapping copies in this beam combination at the wave beam that the gain of same angle compensates each other, and determined beam combination information and corresponding code channel information are sent to memory module; And under the indication of timer; From memory module, read the code channel information and the MBMS business datum of the corresponding wave beam information combination of current slot, correspondence; The MBMS data that read are sent to communication module, and in the notification communication module transmitting antenna in the corresponding beam combination of current slot start working and corresponding beam combination of a last time period in transmitting antenna quit work.Timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Preferably, said memory module is further preserved the wave beam number of the transmitting antenna information, corresponding weights and the same time period that are provided with in advance;

Said communication module comprises: wave beam forms submodule and at least two width of cloth transmitting antennas, wherein,

Said wave beam forms submodule and from memory module, reads transmitting antenna information and the corresponding weights that comprise in every group of wave beam, obtains the transmitting antenna grouping set according to the transmitting antenna information that reads; The weights that utilization reads carry out beam forming processing to each antenna grouping in the antenna grouping set, obtain many group wave beams, and the wave beam information that obtains is sent to memory module; Reception comes from the MBMS business datum of controlling submodule, according to the notice of control submodule, forms the corresponding wave beam of current slot, and MBMS business datum that receives and corresponding code channel information are sent to the transmitting antenna in the wave beam that forms; Perhaps, the transmitting antenna of under the notice of control submodule, controlling in the corresponding wave beam of a time period quits work;

Said transmitting antenna is started working under the control of wave beam formation submodule, receives to come from the MBMS business datum that wave beam forms submodule, utilizes corresponding code channel that the MBMS business datum that receives is sent to receiving terminal; Perhaps, under the notice of wave beam formation submodule, quit work.

Preferably, the said network equipment is the base station.

The present invention provides a kind of MBMS of being used for professional system for transmitting again, can improve MBMS traffic transmission performance effectively.

In system of the present invention, comprising: base station and user equipment (UE), wherein,

The space channel that each time period MBMS transmission is professional is confirmed according to the strongest principle of channel independence in said base station, and on the space channel of each time period correspondence, sends the MBMS business datum to receiving terminal;

Said UE receives the MBMS business datum that comes from the base station.

Preferably; Said system further comprises: radio network controller; Be used to preserve the UE receptivity thresholding and the saltus step thresholding that are provided with in advance, before each time period arrives, notify said UE to report received signal code power RSCP and reception to come from the RSCP of these UE through said base station; According to RSCP that receives and the UE receptivity thresholding preserved; Confirm the receptivity situation of UE, when the UE number that is in the relatively poor situation of receptivity reaches the saltus step thresholding of being preserved, the professional space channel of the said MBMS of informing base station adjustment transmission;

Said base station further reports RSCP at the indication of the said RNC said UE that sends a notice; Reception comes from the RSCP of these UE; The RSCP that receives is sent to RNC; And under the notice of RNC,, in next time period, change space channel according to the professional space channel of determined each time period MBMS transmission;

Said UE receive come from the base station about reporting the notice of RSCP, self RSCP is measured, and the RSCP that is obtained is sent to said base station.

Use the present invention, can improve MBMS traffic transmission performance effectively.Particularly, the present invention has following beneficial effect:

1. among the present invention the MBMS service distribution is transmitted having on the space channel of different fading characteristics; Because it is lower that the probability of big fading loss appears in these space channels simultaneously; Therefore receive the professional receiving terminal of MBMS and can obtain better diversity gain, thereby obtain the higher MBMS signal of signal to noise ratio.Compare with existing MBMS transmission method, MBMS traffic transmission performance improves greatly in the technique scheme.

2. under MBMS service transmission performance condition with higher, user far away also can receive the higher MBMS signal of quality with base station distance, i.e. the present invention can also increase the coverage of MBMS sub-district effectively.

3. the present invention can adopt the transmitting antenna of definite in advance each time period correspondence or the mode of wave beam, and the MBMS business datum is distributed on the space channel with different fading characteristics.Under this mode, network side only needs very little space to preserve the order information of transmitting antenna or wave beam, and consuming time less when carrying out the saltus step of space channel, can not influence the professional overall transfer time of MBMS.

4. the present invention confirms the mode with transmitting antenna that is used or wave beam before can also being employed in each time period arrival, confirms the space channel of MBMS.Under this mode, network side can be considered the time variation of channel fully, thus the channel adjustment result who is more tallied with the actual situation.The raising of MBMS transmission performance is more obvious under this mode.

5. the present invention also utilizes several transmitting antennas or a plurality of wave beam to carry out the transmission of MBMS business datum simultaneously in the section at one time; And the code channel of the corresponding non-overlapping copies of each transmitting antenna in the same time period or wave beam; Thereby further the difference of expansion space channel fading characteristic obtains higher MBMS transmission performance.

6. in one embodiment of the invention, with the receptivity of receiving terminal as one of Consideration of confirming space channel.When network side confirms that according to the feedback of receiving terminal needs carry out the saltus step of space channel, just change MBMS transmission professional transmitting antenna or wave beam in next time period.Not only can guarantee to obtain MBMS transmission performance preferably like this, but also can reduce the channel adjustment number of times effectively, simplify the operation of network side, save resource.What is more important, this mode can also be avoided causing the unexpected situation about reducing of MBMS transmission performance because of existing between channel adjustment and the receiving terminal actual reception performance than big-difference, make that the MBMS transmission mechanism among the present invention is more intelligent.

Description of drawings

To make clearer above-mentioned and other feature and advantage of the present invention of those of ordinary skill in the art through describe exemplary embodiment of the present invention in detail with reference to accompanying drawing below, in the accompanying drawing:

Fig. 1 is the flow chart of MBMS data transmission method in the embodiment of the invention 1;

Fig. 2 is the structural representation of antenna system;

Fig. 3 is the flow chart of MBMS data transmission method in the embodiment of the invention 2;

The sketch map that Fig. 4 puts in order for transmitting antenna in the embodiment of the invention 2;

Fig. 5 be in the embodiment of the invention 2 with subframe the professional sketch map of the multiple MBMS of transmission on several antennas during as bound-time unit;

Fig. 6 is the method flow diagram of the professional transmission of MBMS in the embodiment of the invention 3;

Fig. 7 is the code channel sketch map of an interior a kind of MBMS business of time period correspondence on eight width of cloth transmitting antennas in the embodiment of the invention 3;

Fig. 8 be in the embodiment of the invention 3 on each width of cloth transmitting antenna professional method flow diagram of MBMS transmission;

Fig. 9 is the flow chart of MBMS business transmitting method in the embodiment of the invention 4;

Figure 10 is the method flow diagram of the professional transmission of MBMS in the embodiment of the invention 5;

Figure 11 is the method flow diagram of the professional transmission of MBMS in the embodiment of the invention 6;

The sketch map of two groups of wave beams that Figure 12 compensates for the gain of same angle in the embodiment of the invention 6 each other;

Figure 13 be in the embodiment of the invention 6 with subframe professional sketch mapes of the multiple MBMS of transmission on many group wave beams during as the time period;

Figure 14 is the method flow diagram of the professional transmission of MBMS in the embodiment of the invention 7;

Figure 15 is the code channel sketch map of a kind of MBMS business correspondence on four groups of wave beams in the embodiment of the invention 7;

Figure 16 organizes the professional method flow diagram of MBMS transmission on wave beam in the embodiment of the invention 7 at each;

Figure 17 is the method flow diagram of MBMS transmission in the embodiment of the invention 8;

Figure 18 is the structural representation of MBMS service transmission system in the embodiment of the invention;

Figure 19 is for being used for the structural representation of the professional network equipment that transmits of MBMS in the embodiment of the invention;

Figure 20 is applied to the MBMS scheduler module of technical scheme in the embodiment of the invention 2 and the structural representation of communication module;

Figure 21 is applied to the MBMS scheduler module of technical scheme in the embodiment of the invention 4 and the structural representation of communication module.

Embodiment

For making the object of the invention, technical scheme clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is done further detailed description.

The present invention is a kind of MBMS traffic transmission method; Its basic thought is: the MBMS business datum is dispersed on the space channel with different fading characteristics transmits; So that receiving terminal obtains space diversity gain; Improve the signal to noise ratio of the professional transmission of MBMS, thereby improve MBMS traffic transmission performance.

Below by five embodiment, technical scheme of the present invention is described.

Embodiment 1

Fig. 1 shows the flow chart of MBMS business transmitting method in the present embodiment.Referring to Fig. 1, this method comprises: in step 101, according to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; In step 102, on the space channel of each time period correspondence, send the MBMS business datum to receiving terminal.

Because the professional space channel of MBMS transmission has very strong independence between each time period, promptly the correlation between these space channels is minimum, so the fading characteristic that they had is also inequality.When the MBMS data were transmitted on fading characteristic space channel inequality, all space channels all occurred lower than the probability of lossy, and then receiving terminal can obtain to be used for to the anti fading diversity gain, thereby obtained the higher MBMS signal of signal to noise ratio.The time period here can be time slot, subframe or radio frames etc.

Embodiment 2

Present embodiment as applied environment, through choosing the minimum transmitting antenna order of average correlation, is confirmed the space channel of each time period with antenna system.

Fig. 2 shows the structural representation of antenna system.Referring to Fig. 2, in antenna system, for down direction, the transmitting terminal of network side has several transmitting antennas, and for example: antenna A1 is to antenna A8, and receiving terminal only has an amplitude receiver antenna; And, all form a space channel between every width of cloth transmitting antenna and the reception antenna.

Fig. 3 shows the method flow diagram of the professional transmission of MBMS in the present embodiment.Referring to Fig. 3, this method comprises:

In step 301～302, all that confirm transmitting antenna sum and transmitting antenna put in order, and definite channel coefficient correlation reduces the factor.

Suppose that transmitting terminal has N width of cloth transmitting antenna: A ₁, A ₂..., A _N, and all transmitting antenna equidistance linear array.This moment transmitting antenna all put in order and comprise: A ₁, A ₂..., A _NA ₂, A ₁..., A _N, A _N, A _N-1..., A ₁, total P _N ^NKind.

For wireless transmission channel, As time goes on channel conditions can change, and promptly channel has time variation, and this time variation can produce bigger influence to correlation between channels between two time periods.Usually have the correlation time threshold that is used to represent correlation between two time period upper signal channels, and the speed that the size of correlation time threshold becomes when taking place with channel is relevant, during the channel generation change fast more, the correlation time threshold is more little.In practical application, when the distance of two time periods during, can think that the channel on this two time periods is separate greater than this correlation time threshold, promptly correlation is very little; When the distance of two time periods during less than this correlation time threshold, the channel on this two time periods has bigger correlation; And when the distance of two time periods equaled this correlation time threshold, the correlation of the interchannel on this two time periods was less, but the correlation of this moment can not be left in the basket.In order to draw all average correlation coefficients under putting in order in the subsequent step comparatively exactly, then when the distance of two time periods equals this correlation thresholding, introduce the channel coefficient correlation and reduce factor gamma, wherein 0≤γ≤1 so.

In step 303～304, measure all coefficient correlations between per two width of cloth transmitting antennas that put in order down, and the coefficient correlation of utilizing determined channel coefficient correlation to reduce the factor and measure, calculate all transmitting antenna average correlation coefficients under putting in order.

Here, suppose that the coefficient correlation between two adjacent transmission antennas is ρ, and the correlation time threshold equals two time periods, the transmitting antenna average correlation coefficient under then the x kind puts in order is ρ _x, so ${\mathrm{\ρ}}_x=\frac{1}{N}(\underset{k=2}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}^{|A_k-A_{k-1}|}+\mathrm{\γ}\underset{j=3}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}^{|A_j-A_{j-2}|}),$ Wherein N is the transmitting antenna sum, and γ reduces the factor for the channel coefficient correlation,

Be the coefficient correlation between k width of cloth transmitting antenna and (k-1) width of cloth transmitting antenna,

It is the coefficient correlation between j width of cloth transmitting antenna and (j-2) width of cloth transmitting antenna.

In step 305, minimum the putting in order of average correlation coefficient confirmed as the transmitting antenna order of the professional transmission of MBMS.

When transmitting antenna puts in order corresponding average correlation coefficient hour, show that according to this sequential delivery MBMS the space channel on each time period has the strongest independence, and the diversity gain that receiving terminal can obtain is maximum when professional.In addition, after having confirmed the professional transmitting antenna order of MBMS transmission, in long period of time, all carry out transmission in proper order in the present embodiment according to this, and the non real-time adjustment.Like this, network side only need utilize very little space to preserve determined transmitting antenna order information, and consuming time less when carrying out antenna hopping, can not influence the professional overall transfer time of MBMS.

In step 306, be bound-time unit with the time period, send the MBMS data in proper order according to determined transmitting antenna.

When the time period in the present embodiment was subframe, every through a sub-frame, network side carried out the saltus step of a transmitting antenna.For example, after 305, confirmed the transmitting antenna order shown in Fig. 4, i.e. transmitting antenna A through above-mentioned step 301 ₁→ A ₈→ A ₄→ A ₇→ A ₂→ A ₅→ A ₃→ A ₆→ A ₁, the use duration of every width of cloth transmitting antenna is a sub-frame, the MBMS business datum of every completion one sub-frame transmits, and all stops current transmitting antenna, and starts the corresponding transmitting antenna of next subframe and carry out transfer of data.Certainly, can be bound-time unit also in this step with the time slot shorter than subframe, send the MBMS data in proper order according to determined transmitting antenna.

In order to make full use of several transmitting antennas in the antenna system, it is professional on the distinct transmit antenna, to send different MBMS simultaneously.Exist under the professional situation of multiple MBMS; Different business is the interior corresponding identical transmitting antenna of section at one time; In order to solve the resource conflict problem of this moment; Can be MBMS traffic assignments transmission priority in advance in the present embodiment, the higher MBMS business of priority has the priority that takies transmission channel.So every through a bound-time unit; Judge and whether have the higher MBMS business of priority that in current slot, to transmit on the current transmitting antenna; If; Then wait for a bound-time unit, next transmitting antenna as the current emission antenna, and is returned and carries out above-mentioned decision operation; Otherwise, in current slot, utilize current transmitting antenna MBMS transmission professional, next transmitting antenna as the current emission antenna, and is returned and carries out above-mentioned decision operation.

The professional sketch map of the multiple MBMS of transmission on several antennas when Fig. 5 shows with subframe as bound-time unit.In Fig. 5, include four kinds of MBMS professional S1, S2, S3 and S4 altogether.See that from the angle that MBMS is professional the transmission channel of S1 is arranged to: subframe 1-transmitting antenna A1, subframe 2-transmitting antenna A8 ..., subframe 7-transmitting antenna A1; Seeing from the angle of subframe, is example with subframe 1, and transmitting antenna A1 goes up transmission S1, and transmitting antenna A3 goes up transmission S2, and transmitting antenna A5 goes up transmission S4, and transmitting antenna A7 goes up transmission S3.It is thus clear that the different MBMS service distribution of synchronization is transmitted on different antennas.Like this, because the MBMS signal that is transmitted on several transmitting antennas of synchronization is different, therefore, the transmitting power peak-to-average force ratio (PAR) on every width of cloth transmitting antenna is lower.

Embodiment 3

In code division multiple access (CDMA) system; Also utilize 16 code channels to carry out transfer of data; So for a kind of MBMS is professional; Present embodiment can be at one time selected to have several transmitting antennas of the strongest independence in the section and is worked simultaneously, and each width of cloth antenna is corresponding to the code channel of non-overlapping copies, and makes two groups of transmitting antennas of adjacent time period have minimum correlation.Fig. 6 shows the method flow diagram of the professional transmission of MBMS in the present embodiment.Referring to Fig. 6, this method comprises:

In step 601, confirm transmitting antenna sum and the number of transmit antennas of same time period, choose from all transmitting antennas according to the number of transmit antennas of same time period, obtain many group emitting antenna combination.

Suppose that transmitting terminal has the linearly aligned N width of cloth of equidistance transmitting antenna: A ₁, A ₂..., A _N, and the transmitting antenna data of same time period are K, wherein K≤N.So total C _N ^KIndividual emitting antenna combination.

In step 602～603; Measure the coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination; Calculate the average correlation coefficient of each emitting antenna combination, and with the average correlation coefficient less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; As current slot, the candidate transmitting combination of antennas that average correlation coefficient is minimum is as the emitting antenna combination of current slot with the initial time section, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination.

Suppose that the coefficient correlation between two adjacent transmission antennas is ρ, then the transmitting antenna average correlation coefficient in x emitting antenna combination is ρ _x, so ${\mathrm{\ρ}}_x=\frac{1}{N}\left(\underset{k=2}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}^{|A_k-A_{k-1}|}\right),$ Wherein N is the transmitting antenna sum,

It is the coefficient correlation between k width of cloth transmitting antenna and (k-1) width of cloth transmitting antenna.

The purpose that the correlation thresholding is set here is, the combination that the transmitting antenna that correlation is bigger is formed forecloses, in order to avoid selected in subsequent step, influences the transmission performance of MBMS.

After the transmitting antenna set of having confirmed the initial time section, 16 code channels are distributed to the transmitting antenna in this transmitting antenna set, and different transmit antennas has different code channels.For example, transmitting antenna A ₁Corresponding the 1st to 4 code channel, transmitting antenna A ₂Corresponding the 5th to 8 code channel etc.

In step 604, judge that whether current slot is for the most last time period, if then execution in step 607; Otherwise, execution in step 605.

The current slot here is meant and carries out the space before the MBMS transfer of data newly to the time period that distribution is directed against, but not on the time dimension just in the elapsed time section; And the most last time period is meant last professional time period of a kind of MBMS of transmission.

In step 605; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; Select the minimum candidate transmitting combination of antennas of coefficient correlation as the emitting antenna combination of next time period, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period.

In step 606, with next time period as current slot, return execution in step 604.

In step 607, when needs carry out transfer of data, be bound-time unit with the time period, send the MBMS data according to the emitting antenna combination of determined each time period.

After the emitting antenna combination of having confirmed all time periods and code channel,, then in this step, carry out the transmission operation of MBMS data if arrived the time point that carry out transfer of data.And in the transmission course of data, the code channel that the transmitting antenna of working simultaneously in the same time period is corresponding different.

So far, accomplish the flow process of the professional transmission of MBMS in the present embodiment.

Fig. 7 shows the code channel sketch map of a kind of MBMS business correspondence on eight width of cloth transmitting antennas in the time period.Referring to Fig. 7, for the professional S1 of MBMS, transmitting antenna A1 the corresponding the 1st is to m ₁Individual code channel, the corresponding (m of transmitting antenna A6 ₁+ 1) to m ₂Individual code channel, or the like.At this moment; Because the employed code channel of each transmitting antenna is different in the same time period; Be that the corresponding space channel of each code channel is different; Then the fading characteristic of different spaces channel also can be brought space diversity gain, so the signal to noise ratio of MBMS signal transmission further improves, thereby MBMS traffic transmission performance also makes moderate progress.

Certainly, also can be when distributing the code channel of every width of cloth transmitting antenna correspondence, it is professional to take all factors into consideration multiple MBMS.In other words, at one time on the section, the code channel of professional corresponding distinct transmit antennas of different MBMS and corresponding non-overlapping copies.Fig. 8 shows in the present embodiment the professional method flow diagram of MBMS transmission on each width of cloth transmitting antenna.Referring to Fig. 8, professional through following steps MBMS transmission on each width of cloth transmitting antenna here, to solve resource contention:

In step 801, judge whether there is the higher MBMS business of priority that in current slot, to transmit on the current emission antenna, if then execution in step 802; Otherwise, execution in step 803.

In step 802, judge whether the professional corresponding code channel of MBMS is used by the higher MBMS business of priority on the current emission antenna in current slot, if then execution in step 805; Otherwise, execution in step 803.

In step 803, in current slot, utilize the corresponding code channel MBMS transmission of current emission antenna professional.

In step 804, judge whether end of transmission of MBMS business, if, process ends then; Otherwise, execution in step 805.

In step 805, when current slot finishes, next transmitting antenna as the current emission antenna, and is returned execution in step 801.

So far, finish this MBMS transfer process.

Visible by above-mentioned steps 801 to 805, the code channel of professional corresponding distinct transmit antenna of different MBMS and corresponding non-overlapping copies can further enlarge the difference of channel fading like this, thereby improves the transmission performance of MBMS.

Embodiment 4

Present embodiment is example with the antenna system, and through choosing the minimum transmitting antenna order of channel impulse response correlation, confirms the space channel of each time period.Differently in present embodiment and embodiment 2 and 3 be, present embodiment was confirmed the transmitting antenna that will be used before next time period arrives, but not the integral body use of disposable definite transmitting antenna order.

Fig. 9 shows the flow chart of MBMS transmission method in the present embodiment.Referring to Fig. 9, this method comprises:

In step 901, select the transmitting antenna of initial time section, and utilize this antenna professional at initial time section MBMS transmission.In this step, the initial time section is meant first professional time period of MBMS of transmission.For example first time slot, first subframe or first radio frames.When selecting the transmitting antenna of initial time section, can in all transmitting antennas, select arbitrarily.

In step 902～903, measure through up channel, estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and calculate the channel impulse response coefficient correlation between current emission antenna and all the other transmitting antennas.

In tdd systems,, can obtain the channel impulse response of every width of cloth transmitting antenna on the down direction through up channel is measured so because the up-downgoing channel has good symmetry.Suppose to co-exist in N width of cloth transmitting antenna, every width of cloth transmitting antenna at the channel impulse response of current slot is: h ₁, h ₂..., h _N, and the employed transmitting antenna of current slot is an i width of cloth transmitting antenna.

Can calculate the channel impulse response coefficient correlation γ between the employed transmitting antenna of current slot and each width of cloth transmitting antenna according to the following equation _Ij:

${\mathrm{\γ}}_{\mathrm{Ij}}=\frac{E[h_i*h_j]-E\left[h_i\right]*E\left[h_j\right]}{\sqrt{E\left[{h_i}^2\right]-E^2\left[h_i\right]}*\sqrt{E\left[{h_j}^2\right]-E^2\left[h_j\right]}},$ Wherein operator E representes to ask for average, and 1≤j≤N.

In step 904～905; The emitting antenna selecting that the channel impulse response coefficient correlation is minimum is the transmitting antenna of next time period; When current slot finishes; The transmitting antenna of next time period as the current emission antenna, is utilized this transmitting antenna MBMS transmission professional, and returns execution in step 902.

When between the transmitting antenna of current slot and the transmitting antenna of next time period, having minimum channel impulse response coefficient correlation; Show that the corresponding space channel of this two width of cloth transmitting antenna has the strongest independence; The difference that is fading characteristic is maximum; Therefore, when sending the MBMS data, can obtain higher signal to noise ratio, thereby obtain higher MBMS transmission performance.This step when utilizing determined transmitting antenna MBMS transmission professional, can according to embodiment 2 in the identical mode of step 306 operate.

So far, the professional transfer process of MBMS in the completion present embodiment.

In the present embodiment, calculate the transmitting antenna of current slot and the channel impulse response correlation between each width of cloth transmitting antenna, and the transmitting antenna of emitting antenna selecting for being used in next time period that the channel impulse response correlation is minimum.It is thus clear that; Come the order of adjustment transmitting antenna regularly according to the corresponding channel impulse response of each width of cloth antenna in the present embodiment; Therefore can consider the influence of external environment to a great extent to the channel fading characteristic; Thereby assurance MBMS business can be transmitted with higher signal to noise ratio, and then guarantees MBMS traffic transmission performance.

Embodiment 5

In the present embodiment channel impulse response correlation among the embodiment 4 is combined with embodiment 3, adopt several transmitting antennas to come the while MBMS transmission professional at one time in the section.Figure 10 shows the flow chart of MBMS transmission method in the present embodiment.Referring to Figure 10, this method comprises:

In step 1001, confirm transmitting antenna sum and the number of transmit antennas of same time period, choose from all transmitting antennas according to the number of transmit antennas of same time period, obtain many group emitting antenna combination.

In step 1002, measure through up channel, estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and calculate the channel impulse response coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination.

Can come calculating channel impulse response coefficient correlation according to the mode of step 903 among the embodiment 4 in this step.

In step 1003～1004; According to the channel impulse response coefficient correlation of calculating; Calculate the average channel impulse response coefficient correlation of all emitting antenna combination; With average channel impulse response coefficient correlation less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; The candidate transmitting combination of antennas that average channel impulse response coefficient correlation is minimum is as the emitting antenna combination of current slot, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination.

In step 1005, utilize the code channel that is distributed, MBMS transmission is professional on all transmitting antennas in the emitting antenna combination of current slot.

In step 1006; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; Select the minimum candidate transmitting combination of antennas of coefficient correlation as the emitting antenna combination of next time period, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period.

In step 1007, when current slot finishes,, and return execution in step 1005 with the emitting antenna combination of next time period emitting antenna combination as current slot.

So far, accomplish the flow process of the professional transmission of MBMS in the present embodiment.

The above embodiments 2,3,4 and 5 all improve the MBMS performance with the mode of antenna hopping; Certainly; Because the channel fading characteristic on the different transmit antennas can be not identical; Therefore selection mode confirms that the order of transmitting antenna also can make receiving terminal obtain diversity gain at random, thereby improves the MBMS transmission performance.Particularly, can disposablely select the interior transmitting antenna order of All Time section of the professional transmission of a kind of MBMS at random, also can when current slot finishes, select the transmitting antenna of next time period at random.

Embodiment 6

In antenna system; Network side activates several transmitting antennas simultaneously; Spatially produce by the formed directional beam that transmits; And making antenna main beam aim at subscriber signal arrival direction (DOA), secondary lobe or zero falls into aims at the interference signal arrival direction, thereby reaches the purpose of efficiently utilizing mobile subscriber's signal and eliminating or suppress interference signal.Present embodiment can pass through saltus step between the different wave beam of channel fading characteristic, promptly changes the launching beam in next time period, makes receiving terminal obtain diversity gain, thereby improves MBMS traffic transmission performance.

Figure 11 shows the method flow diagram of the professional transmission of MBMS in the present embodiment.Referring to Figure 11, this method comprises:

In step 1101～1102, the number of antennas that comprises in every group of wave beam is set, according to set number of transmit antennas, from all transmitting antennas, choose, obtain a plurality of antenna grouping, and form the transmitting antenna grouping set.

Suppose that the number of antennas that comprises in every group of wave beam of network side is set to k, total N width of cloth transmitting antenna, and k≤N.When transmitting antenna was chosen, each free of turn was with a different k width of cloth transmission antenna group unification antenna grouping, and the antenna grouping number that obtains so does $M=C_N^k.$ Then, more all antenna grouping are formed the antenna grouping set B together, and the corresponding antenna grouping of each element in should gathering.

For example: total N=4 width of cloth transmitting antenna A ₁, A ₂, A ₃And A ₄, comprise k=3 width of cloth transmitting antenna in every group of wave beam, obtain so $M={\mathrm{<figure-callout\; id="4"\; label="C"\; filenames="H071C3596420070711E000031.png"\; state="\{\{state\}\}">C</figure-callout>}}_4^3=4$ Individual antenna grouping, i.e. { A ₁, A ₂, A ₃, { A ₁, A ₂, A ₄, { A ₁, A ₃, A ₄, { A ₂, A ₃, A ₄, and do not have sequencing between each transmitting antenna in each antenna grouping.Antenna grouping set so $B=\left\{\begin{array}{ccc}{A}_1& A_2& A_3\\ A_1& A_2& A_4\\ A_1& A_3& A_4\\ A_2& A_3& {\mathrm{<figure-callout\; id="4"\; label="A"\; filenames="H071C3596420070711E000031.png"\; state="\{\{state\}\}">A</figure-callout>}}_4\end{array}\right\},$ Wherein every row is represented an antenna grouping.

In step 1103, utilize predetermined weights that each antenna grouping in the antenna grouping set is carried out beam forming processing, obtain many group wave beams.

For can be in antenna system application of beam figuration technology, in advance for transmitting antenna is provided with corresponding weights, for example total W organizes weights to present embodiment according to the attribute of antenna system.In this step, utilize all weights to multiply by the amplitude and the phase place of transmitting antenna in each antenna grouping, to realize beam forming processing.After accomplishing beam forming processing, obtain M * W altogether and organize wave beam.

Be example still, suppose to be provided with in advance W=2 group weights W with N=4, k=3 ₁And W ₂, through after the beam forming processing, obtain 8 groups of wave beams altogether so, comprising: B1=W ₁* { A ₁, A ₂, A ₃, B2=W ₁* { A ₁, A ₂, A ₄, B3=W ₁* { A ₁, A ₃, W ₁A ₄, B4=W ₁* { A ₂, A ₃, A ₄, B5=W ₂* { A ₁, A ₂, A ₃, B6=W ₂* { A ₁, A ₂, A ₄, B7=W ₂* { A ₁, A ₃, A ₄, B8=W ₂* { A ₂, A ₃, A ₄.

In step 1104, in the mutual compensation principle of the gain of same angle, confirm the wave beam order between adjacent two wave beams of foundation.

In this step, at first confirm the power pattern (pattern) of every group of wave beam in circumference, obtain the gain on all angles through emulation; Then, adopt the mode of selecting at random to confirm the wave beam that the initial time section is corresponding, as current wave beam; Again in the power pattern of all the other wave beams; Search the wave beam that compensates each other in the gain of same angle with current wave beam; And this wave beam confirmed as corresponding wave beam of next time period; In this manner, up to the arrangement of accomplishing all wave beams, for example putting in order of 8 groups of wave beams is B1 → B3 → B5 → B7 → B2 → B4 → B6 → B8 → B1.

Figure 12 shows the sketch map of two groups of wave beams that the gain of same angle compensates each other.As can beappreciated from fig. 12, on 50 ° and 310 ° of directions, the gain of wave beam B1 is bigger, and the gain of wave beam B2 is less; On 30 ° and 330 ° of directions, the gain of wave beam B1 is less, and the gain of wave beam B2 is bigger.When wave beam B1 and wave beam B2 correspondence adjacent time intervals, the fading characteristic of two wave beam spatial channel corresponding exists than big-difference like this, and therefore, receiving terminal stage gain in obtainable minute is bigger, thereby the transmission performance of MBMS can be guaranteed.

In step 1105, with the predetermined time period be unit, according to determined wave beam order, MBMS transmission is professional.

In this step, begin from the professional initial time section of beginning MBMS transmission, every through a time period, just carry out a wave beam saltus step, change the professional wave beam of MBMS transmission.In other words, stop using each transmitting antenna in the corresponding wave beam of current slot, and transfer each transmitting antenna that starts in the corresponding wave beam of next time period to.Time period in the present embodiment can be time slot, subframe or radio frames.

So far, the MBMS transfer process in the completion present embodiment.

In order to make full use of several transmitting antennas in the antenna system, it is professional to utilize different wave beams to send different MBMS simultaneously.Similar with embodiment 2; Exist under the professional situation of multiple MBMS; Different business is the interior corresponding identical transmitting antenna of section at one time; In order to solve the resource conflict problem of this moment, can be each MBMS traffic assignments transmission priority in advance in the present embodiment, the higher MBMS business of priority has the priority that takies transmission channel.So every through a time period; Judge whether there is the higher MBMS business of priority that in current slot, to transmit on the current wave beam, if then wait for a time period; The wave beam that next is corresponding time period is as current wave beam, and returns and carry out above-mentioned decision operation; Otherwise, in current slot, utilize current wave beam MBMS transmission professional, the wave beam that next time period is corresponding is as the current emission antenna, and returns and carry out above-mentioned decision operation.

The professional sketch mapes of the multiple MBMS of transmission on many group wave beams when Figure 13 shows with subframe as the time period.In Figure 13, include four kinds of MBMS professional S1, S2, S3 and S4 altogether.See that from the angle that MBMS is professional the transmission channel of S1 is arranged to: subframe 1-wave beam B1, subframe 2-wave beam B3 ..., subframe 4-wave beam B4; Seeing from the angle of subframe, is example with subframe 1, and wave beam B1 goes up transmission S1, and wave beam B2 goes up transmission S4, and wave beam B3 goes up transmission S2, and wave beam B4 goes up transmission S3.It is thus clear that the different MBMS business of synchronization is utilized different wave beam transmission.Like this, because that synchronization is organized the MBMS signal that wave beam transmits more is different, therefore, the transmitting power PAR on the transmitting antenna of every group of wave beam is also lower.

Embodiment 7

Present embodiment can be copied the mode of embodiment 3, and MBMS transmission is professional simultaneously to adopt many group wave beams at one time in the section, and the code channel of the corresponding non-overlapping copies of every group of wave beam in the same time period.

Figure 14 shows the method flow diagram of the professional transmission of MBMS in the present embodiment.Referring to Figure 14, this method comprises:

In step 1401, the number of antennas that comprises in every group of wave beam is set, according to set number of transmit antennas, from all transmitting antennas, choose, obtain a plurality of antenna grouping, and form the transmitting antenna grouping set.

In step 1402, utilize predetermined all weights that each antenna grouping in the antenna grouping set is carried out beam forming processing, obtain many group wave beams.

In step 1403; Wave beam number according to the predetermined same time period; Select wave beam to form the beam combination of current slot, each wave beam in this beam combination compensates in the gain of same angle each other, and is the code channel of each the beam allocation non-overlapping copies in this beam combination.

Similar with embodiment 3, the current slot in the present embodiment also is meant and carries out the space before the MBMS transfer of data newly to the time period that distribution is directed against, but not on the time dimension just in the elapsed time section.

In step 1404～1405, judge that whether current slot is for the most last time period, if then execution in step 1407; Otherwise the wave beam of selecting to compensate each other in the gain of same angle with the beam combination of current slot is formed the beam combination of next time period and is the code channel of each the beam allocation non-overlapping copies in this beam combination.

In step 1406, with next time period as current slot, return execution in step 1404.

In step 1407, be bound-time unit with the time period, send the MBMS data according to the beam combination of determined each time period.

In this step when sending the MBMS data, the code channel that the wave beam of working simultaneously in the same time period is corresponding different.

So far, accomplish the flow process of the professional transmission of MBMS in the present embodiment.

Figure 15 shows the code channel sketch map of a kind of MBMS business correspondence on four groups of wave beams.Referring to Figure 15, for the professional S1 of MBMS, wave beam B1 the corresponding the 1st is to m ₁Individual code channel, the corresponding (m of wave beam B2 ₂+ 1) to m ₃Individual code channel, the corresponding (m of wave beam B3 ₁+ 1) to m ₂Individual code channel, the corresponding (m of wave beam B4 ₃+ 1) to m ₄Individual code channel.At one time in the section, the different wave beam of each code channel respective channels fading characteristic, so the signal to noise ratio of MBMS signal transmission further improves, thus MBMS traffic transmission performance also makes moderate progress.

Certainly, also can be when distributing the code channel of every group of wave beam correspondence, it is professional to take all factors into consideration multiple MBMS.In other words, at one time on the section, the professional corresponding different wave beam of different MBMS and the code channel of corresponding non-overlapping copies.In order to prevent the resource contention of multiple business, Figure 16 shows in the present embodiment and organizes the professional method flow diagram of MBMS transmission on wave beam at each.Referring to Figure 16, organize MBMS transmission business on wave beam at each as follows here:

In step 1601, judge whether there is the higher MBMS business of priority that in current slot, to transmit in the current wave beam, if then execution in step 1602; Otherwise, execution in step 1603.

In step 1602, judge whether the professional corresponding code channel of MBMS is used by the higher MBMS business of priority in the current wave beam in current slot, if then execution in step 1604; Otherwise, execution in step 1605.

In step 1603, in current slot, utilize current wave beam and corresponding code channel MBMS transmission business.

In step 1604, judge whether end of transmission of MBMS business, if, process ends then; Otherwise, execution in step 1605.

In step 1605, when current slot finishes, next wave beam as current wave beam, and is returned execution in step 1601.

So far, finish this MBMS transfer process.

To 1605, the professional corresponding different wave beam of different MBMS and the code channel of corresponding non-overlapping copies can further enlarge the difference of channel fading like this, thereby improve the transmission performance of MBMS through above-mentioned step 1601.

Embodiment 8

The receptivity of considering receiving terminal UE changes, present embodiment with the received signal code power (RSCP) of UE as one of factor of channel adjustment, to obtain better MBMS service transmission performance.

Figure 17 shows the method flow diagram of MBMS transmission in the present embodiment.The receptivity measurement period is set in the present embodiment in advance.Referring to Figure 17, this method comprises:

In step 1701, notify all to receive the professional UE of current MBMS and report RSCP.

In this step, network side notifies the UE that belongs to same MBMS service groups to report the RSCP of self through starting MBMS counting process.For UE,, then set up process and report RSCP through Radio Resource control (RRC) connection if be in idle pulley; If when being in UMTS land radio access web registration area PCH (URA_PCH) state or cell paging channel (CELL_PCH) state, UE reports RSCP through cell updating course.

In step 1702～1703, judge whether to exist RSCP, if then upgrade the number of receptivity poor user less than the UE receptivity thresholding that is provided with in advance; Otherwise, return execution in step 1701.

In the present embodiment, the number N of the UE that network side is relatively poor with receptivity in the MBMS service groups of current transmission in advance is made as initial value 0, and confirms UE receptivity thresholding in advance according to the attribute of use network.In two steps herein; Network side whenever receives a RSCP, just confirms through judging whether the corresponding UE of this RSCP is in the relatively poor situation of receptivity at this moment, and at RSCP during less than UE receptivity thresholding; On the number N of receptivity poor user, add 1, i.e. N=N+1.

In step 1704～1707, judge whether the number of receptivity poor user reaches the saltus step thresholding that is provided with in advance, if, then carry out antenna hopping or wave beam saltus step, and process ends; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return execution in step 1701, if execution in step 1701 is then returned in no show.

When the number of receptivity poor user reaches the saltus step thresholding; Show that the diversity gain that receiving terminal can obtain can't satisfy the professional requirement of correct reception MBMS; Network side need pass through the mode of antenna hopping or wave beam saltus step in next time period so; Adjust the professional channel of MBMS transmission,, thereby improve MBMS traffic transmission performance so that improve the quality of service (Qos) in the professional transmission course of MBMS.

The flow process of present embodiment can combine with the scheme of embodiment 2 to 4, carries out above-mentioned step 1701 to 1707 before each time period in the MBMS transmission process arrives.Particularly; For embodiment 2 and 3; Can be first execution in step 301 to 305 or step 601 confirm the operation of the transmitting antenna order of each time period in 606, then concrete execution in step 306 or 607 o'clock, operate to 1707 according to step 1701; And when in step 1707, carrying out antenna hopping, jump to the transmitting antenna of next time period from the transmitting antenna of current slot.For embodiment 4 and 5, the step 1701 is here carried out in step 901 or 1001 backs to 1707, and according to step 902 to 905 or the operation of step 1002 to 1007 come execution in step 1707.For embodiment 6 and 7; At first execution in step 1101 to 1104 or step 1401 operation to 1406; Then concrete execution in step 1105 or 1407 o'clock; Operate to 1707 according to step 1701, and when in step 1707, carrying out the wave beam saltus step, jump to the wave beam of next time period from the wave beam of current slot.

In order to guarantee carrying out smoothly of MBMS transfer process among above-mentioned each embodiment, the present invention also provides and has been used for the professional system for transmitting of MBMS.Figure 18 shows the structural representation of MBMS service transmission system in the embodiment of the invention.Shown in figure 18, this system comprises: base station and UE, and wherein the space channel that each time period MBMS transmission is professional is confirmed according to the strongest principle of channel independence in the base station, and on the space channel of each time period correspondence, sends the MBMS business datum to receiving terminal; UE is used to receive the MBMS business datum that comes from the base station.

Further; MBMS service transmission system among Figure 18 also comprises radio network controller (RNC); Preserve the UE receptivity thresholding and the saltus step thresholding that are provided with in advance, before each time period arrives, receive the professional UE of current MBMS through the base station notice and report RSCP and receive the RSCP that comes from these UE; According to RSCP that receives and the UE receptivity thresholding preserved; Confirm the receptivity situation of UE, when the UE number that is in the relatively poor situation of receptivity reaches the saltus step thresholding of being preserved, the professional space channel of informing base station adjustment MBMS transmission.

When having RNC in the system; The base station can also send a notice in the indication of RNC and receive the professional UE of current MBMS and report RSCP; Reception comes from the RSCP of these UE; The RSCP that receives is sent to RNC, and under the notice of RNC according to the professional space channel of determined each MBMS transmission time period, in next time period, change space channel.Correspondingly, UE receive come from the base station about reporting the notice of RSCP, self RSCP is measured, and the RSCP that is obtained is sent to the base station.

Figure 19 shows the structural representation of the network equipment that is used for the professional transmission of MBMS in the embodiment of the invention.Referring to Figure 19, this network equipment comprises: MBMS scheduler module, memory module and communication module.Wherein, The MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional, determined spatial channel information is sent to memory module, when each time period arrives; From memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module.Memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission.Communication module receives the corresponding spatial channel information of current slot that the MBMS scheduler module is sent, and from memory module, reads the MBMS business datum, and the MBMS business datum that reads is carried on the corresponding space channel of current slot, sends to receiving terminal.The network equipment here can be the base station.

Figure 20 shows the MBMS scheduler module that is applied to technical scheme in the embodiment of the invention 2 and the structural representation of communication module.Shown in figure 20, the MBMS scheduler module comprises: measure submodule, control submodule and timer, and communication module comprises several transmitting antennas.Wherein, all that measure that submodule confirms number of transmit antennas and transmitting antenna put in order, and measure all coefficient correlations between per two width of cloth transmitting antennas that put in order down, and the coefficient correlation that obtains is sent to the control submodule; The control submodule confirms that the channel coefficient correlation reduces the factor; Reception comes from the coefficient correlation between per two width of cloth transmitting antennas of measuring submodule; The coefficient correlation that reduces the factor and receive according to determined coefficient correlation; Calculate all transmitting antenna average correlation coefficients under putting in order, the transmitting antenna order of the professional transmission of MBMS is confirmed as in minimum the putting in order of average correlation coefficient, and determined transmitting antenna is sent to memory module in proper order; This control module is also under the indication of timer; From memory module, read current slot corresponding transmitting antenna information and MBMS business datum; The MBMS business datum that reads is sent to communication module, and the transmitting antenna that the transmitting antenna that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quits work.Timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.For the transmitting antenna in the communication module, the conjunction measuring submodule carries out the measurement of coefficient correlation between transmitting antenna; Under the notice of control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

Embodiment 3 also can use the structure among Figure 20.At this moment; Measurement submodule in the MMBMS scheduler module is confirmed transmitting antenna sum and the number of transmit antennas of same time period; Form many group emitting antenna combination according to the number of transmit antennas of same time period; Measure the coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination, and the coefficient correlation that obtains is sent to the control submodule; The control submodule receives and comes from the coefficient correlation between per two width of cloth transmitting antennas of measuring submodule; Calculate the average correlation coefficient of all emitting antenna combination; The candidate transmitting combination of antennas that average correlation coefficient is minimum is as the emitting antenna combination of current slot; And be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; The candidate transmitting combination of antennas of selection coefficient correlation minimum is the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period as the emitting antenna combination of next time period, and the emitting antenna combination of determined each time period is sent to memory module with corresponding code channel information; This control module is also under the indication of timer; From memory module, read current slot corresponding emitting antenna combination information, corresponding code channel information and MBMS business datum; The MBMS business datum that reads is sent to communication module, and the emitting antenna combination that the emitting antenna combination that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quits work.Timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.For the transmitting antenna in the communication module, the conjunction measuring submodule carries out the measurement of coefficient correlation between transmitting antenna; Under the notice of control submodule, start working, reception comes from the MBMS business datum of controlling submodule, utilizes corresponding code channel that the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

Structure among Figure 20 is equally applicable to the technical scheme of the embodiment of the invention 4.At this moment, for the MBMS scheduler module, measure submodule and measure, estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and the estimated channel impulse response that goes out is sent to the control submodule through up channel.The control submodule receives from the channel impulse response of measuring submodule; Calculate corresponding transmitting antenna of current slot and the channel impulse response coefficient correlation between all the other transmitting antennas; The emitting antenna selecting that the channel impulse response coefficient correlation is minimum is a corresponding transmitting antenna of next time period, and the transmitting antenna information that next time period is corresponding sends to memory module; And should control submodule also under the indication of timer; From memory module, read current slot corresponding transmitting antenna information and MBMS business datum; The MBMS data that read are sent to communication module, and the transmitting antenna that the transmitting antenna that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quit work.Timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.For the transmitting antenna in the communication module, the conjunction measuring submodule carries out up channel and measures; Under the notice of control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

Embodiment 5 also can adopt the structure of Figure 20.At this moment; Measurement submodule in the MBMS scheduler module is confirmed transmitting antenna sum and the number of transmit antennas of same time period; Form many group emitting antenna combination according to the number of transmit antennas of same time period; Measure through up channel, estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and the estimated channel impulse response that goes out is sent to the control submodule.The control submodule receives from the channel impulse response of measuring submodule; Calculate the channel impulse response coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination; Calculate the average channel impulse response coefficient correlation of all emitting antenna combination; With average channel impulse response coefficient correlation less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; The candidate transmitting combination of antennas that average channel impulse response coefficient correlation is minimum is as the emitting antenna combination of current slot; And be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; The candidate transmitting combination of antennas of selection coefficient correlation minimum is the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period as the emitting antenna combination of next time period, and determined emitting antenna combination information and corresponding code channel information are sent to memory module; And should control submodule also under the indication of timer; From memory module, read the code channel information and the MBMS business datum of the corresponding emitting antenna combination information of current slot, correspondence; The MBMS data that read are sent to communication module, and the emitting antenna combination that the emitting antenna combination that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quit work.Timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.For the transmitting antenna in the communication module, the conjunction measuring submodule carries out up channel and measures; Under the notice of control submodule, start working, reception comes from the MBMS business datum of controlling submodule, utilizes corresponding code channel that the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

Figure 21 shows the MBMS scheduler module that is applied to technical scheme in the embodiment of the invention 6 and the structural representation of communication module.Shown in figure 21, the MBMS scheduler module comprises: control submodule and timer.Wherein, The control submodule reads many group wave beam information from memory module, confirm the gain of every group of wave beam on all angles through emulation, and adjacent two wave beams of foundation are in the mutual compensation principle of the gain of same angle; Confirm the wave beam order, and determined wave beam is sent to memory module in proper order; And should control submodule also under the indication of timer; From memory module, read current slot corresponding wave beam information and MBMS business datum; The MBMS data that read are sent to communication module, and the transmitting antenna of the corresponding wave beam of current slot was started working and the transmitting antenna of corresponding wave beam of a last time period quits work in the notification communication module.Timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Form submodule for the wave beam in the communication module, from memory module, read the transmitting antenna information and the corresponding weights that comprise in every group of wave beam, obtain the transmitting antenna grouping set according to the transmitting antenna information that reads; The weights that utilization reads carry out beam forming processing to each antenna grouping in the antenna grouping set, obtain many group wave beams, and the wave beam information that obtains is sent to memory module; Reception comes from the MBMS business datum of controlling submodule, according to the notice of control submodule, forms the corresponding wave beam of current slot, and the MBMS business datum that receives is sent to the transmitting antenna in the wave beam that forms; Perhaps, the transmitting antenna of under the notice of control submodule, controlling in the corresponding wave beam of a time period quits work.

For the transmitting antenna in the communication module, under the control of wave beam formation submodule, start working, receive the MBMS business datum that comes from wave beam formation submodule, the MBMS business datum that receives is sent to receiving terminal; Perhaps, under the notice of wave beam formation submodule, quit work.

Structure shown in Figure 21 is when being applied to embodiment 7; Control submodule in the MBMS scheduler module reads many group wave beam information and the wave beam number of same time period from memory module; Confirm of the gain of each wave beam through emulation in same angle; According to the gain principle of complementarity; Select the beam combination of current slot; Be the code channel of each the beam allocation non-overlapping copies in this beam combination, and the beam combination of selection and current slot forms the beam combination of next time period and be the code channel of each the beam allocation non-overlapping copies in this beam combination at the wave beam that the gain of same angle compensates each other, and determined beam combination information and corresponding code channel information are sent to memory module; And should control submodule also under the indication of timer; From memory module, read the code channel information and the MBMS business datum of the corresponding wave beam information combination of current slot, correspondence; The MBMS data that read are sent to communication module, and in the notification communication module transmitting antenna in the corresponding beam combination of current slot start working and corresponding beam combination of a last time period in transmitting antenna quit work.Timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control module transmitting time section.

Form submodule for the wave beam in the communication module, from memory module, read the transmitting antenna information and the corresponding weights that comprise in every group of wave beam, obtain the transmitting antenna grouping set according to the transmitting antenna information that reads; The weights that utilization reads carry out beam forming processing to each antenna grouping in the antenna grouping set, obtain many group wave beams, and the wave beam information that obtains is sent to memory module; Reception comes from the MBMS business datum of controlling submodule, according to the notice of control submodule, forms the corresponding wave beam of current slot, and MBMS business datum that receives and corresponding code channel information are sent to the transmitting antenna in the wave beam that forms; Perhaps, the transmitting antenna of under the notice of control submodule, controlling in the corresponding wave beam of a time period quits work.

For the transmitting antenna in the communication module, under the control of wave beam formation submodule, start working, receive the MBMS business datum that comes from wave beam formation submodule, utilize corresponding code channel that the MBMS business datum that receives is sent to receiving terminal; Perhaps, under the notice of wave beam formation submodule, quit work.

Can know by above-mentioned description; All the MBMS service distribution is transmitted having on the space channel of different fading characteristics among each embodiment of the present invention; Because these space channels occur lower than the probability of lossy simultaneously; Therefore receive the professional receiving terminal of MBMS and can obtain better diversity gain, thereby obtain the higher MBMS signal of signal to noise ratio.Compare with existing MBMS transmission method, MBMS traffic transmission performance improves greatly in the technique scheme.Correspondingly, under MBMS service transmission performance condition with higher, user far away also can receive the higher MBMS signal of quality with base station distance, i.e. the present invention can also increase the coverage of MBMS sub-district effectively.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (36)

1. the transmission method of a multimedia broadcast-multicast service MBMS is characterized in that, this method comprises:

According to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; On the space channel of each time period correspondence, send the MBMS business datum to receiving terminal;

The professional space channel of said definite each time period MBMS transmission is:

All that confirm number of transmit antennas and transmitting antenna put in order, and definite channel coefficient correlation reduces the factor;

Measure all coefficient correlations between per two width of cloth transmitting antennas that put in order down, and the coefficient correlation of utilizing determined channel coefficient correlation to reduce the factor and measure, calculate all transmitting antenna average correlation coefficients under putting in order;

The professional transmitting antenna order of transmitting of MBMS is confirmed as in minimum the putting in order of average correlation coefficient, and each transmitting antenna in this transmitting antenna order is confirmed as corresponding transmitting antenna of each time period successively.

2. the method for claim 1 is characterized in that, all transmitting antenna average correlation coefficients under putting in order of said calculating are:

If the coefficient correlation between two adjacent transmission antennas is ρ, the transmitting antenna average correlation coefficient under the x kind puts in order is ρ _x, then Wherein N is a number of transmit antennas, and γ reduces the factor for the channel coefficient correlation,

Be the coefficient correlation between k width of cloth transmitting antenna and (k-1) width of cloth transmitting antenna,

It is the coefficient correlation between j width of cloth transmitting antenna and (j-2) width of cloth transmitting antenna.

3. the method for claim 1 is characterized in that, saidly sends the MBMS business datum to receiving terminal and is:

When current slot finishes, stop the corresponding transmitting antenna of current slot, with next time period as current slot, start corresponding transmitting antenna, as the current emission antenna, and utilize should current transmitting antenna MBMS transmission business.

4. method as claimed in claim 3 is characterized in that, said stopping further to comprise before the corresponding transmitting antenna of current slot:

A101. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A102 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A102. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding transmitting antenna of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 101, if no show is then directly returned and carried out said steps A 101.

5. the transmission method of a multimedia broadcast-multicast service MBMS is characterized in that, this method comprises:

According to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; On the space channel of each time period correspondence, send the MBMS business datum to receiving terminal;

The professional space channel of said definite each time period MBMS transmission is:

Confirm transmitting antenna sum and the number of transmit antennas of same time period, from all transmitting antennas, choose, obtain many group emitting antenna combination according to the number of transmit antennas of same time period;

Measure the coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination; Calculate the average correlation coefficient of each emitting antenna combination, and with average correlation coefficient less than the emitting antenna combination of the correlation thresholding that sets in advance as the candidate transmitting combination of antennas;

The candidate transmitting combination of antennas that average correlation coefficient is minimum is as the emitting antenna combination of current slot, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination;

Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; Select the minimum candidate transmitting combination of antennas of coefficient correlation as the emitting antenna combination of next time period, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period.

6. method as claimed in claim 5 is characterized in that, saidly sends the MBMS business datum to receiving terminal and is:

When current slot finishes, stop the corresponding transmitting antenna of current slot, with next time period as current slot, start corresponding transmitting antenna, as the current emission antenna, and utilize the corresponding code channel MBMS transmission of this current transmitting antenna professional.

7. method as claimed in claim 6 is characterized in that, this method further comprises: be each MBMS traffic assignments priority in advance;

The said corresponding code channel of current emission antenna that in current slot, utilizes transmits before the said MBMS business, further comprises:

A11. judge said MBMS business on the current emission antenna corresponding code channel in current slot whether by professional use of the higher MBMS of priority, if, process ends then; Otherwise, carry out the said corresponding code channel of current emission antenna that in current slot, utilizes and transmit said MBMS business.

8. method as claimed in claim 6 is characterized in that, said stopping further to comprise before the corresponding transmitting antenna of current slot:

A201. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A202 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A202. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding transmitting antenna of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 201, if no show is then directly returned and carried out said steps A 201.

9. the transmission method of a multimedia broadcast-multicast service MBMS is characterized in that, this method comprises:

According to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; On the space channel of each time period correspondence, send the MBMS business datum to receiving terminal;

The professional space channel of said definite each time period MBMS transmission is:

Select the transmitting antenna of initial time section;

In time period after the initial time section; Measure through up channel; Estimate the channel impulse response on the every width of cloth transmitting antenna of current slot; Calculate corresponding transmitting antenna of current slot and the channel impulse response coefficient correlation between all the other transmitting antennas, and the emitting antenna selecting that the channel impulse response coefficient correlation is minimum is the transmitting antenna of next time period.

10. method as claimed in claim 9 is characterized in that, transmitting antenna that said calculating current slot is corresponding and the channel impulse response coefficient correlation between all the other transmitting antennas are:

If transmitting antenna and the channel impulse response coefficient correlation between all the other transmitting antennas that current slot is corresponding are γ _Ij, then

H wherein _iBe the channel impulse response of the corresponding transmitting antenna of current slot, h _jBe the channel impulse response of j width of cloth transmitting antenna, operator E representes to ask for covariance, and 1≤j≤N; N is the transmitting antenna sum.

11. method as claimed in claim 9 is characterized in that, saidly sends the MBMS business datum to receiving terminal and is:

When current slot finishes, stop the corresponding transmitting antenna of current slot, with next time period as current slot, start corresponding transmitting antenna, as the current emission antenna, and utilize should current transmitting antenna MBMS transmission business.

12. method as claimed in claim 11 is characterized in that, said stopping further to comprise before the corresponding transmitting antenna of current slot:

A101. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A102 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A102. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding transmitting antenna of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 101, if no show is then directly returned and carried out said steps A 101.

13. the transmission method of a multimedia broadcast-multicast service MBMS is characterized in that, this method comprises:

According to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; On the space channel of each time period correspondence, send the MBMS business datum to receiving terminal;

The professional space channel of said definite each time period MBMS transmission is:

Confirm transmitting antenna sum and the number of transmit antennas of same time period, from all transmitting antennas, choose, obtain many group emitting antenna combination according to the number of transmit antennas of same time period;

Measure through up channel, estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and calculate the channel impulse response coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination;

According to the channel impulse response coefficient correlation of calculating; Calculate the average channel impulse response coefficient correlation of all emitting antenna combination; With average channel impulse response coefficient correlation less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; The candidate transmitting combination of antennas that average channel impulse response coefficient correlation is minimum is as the emitting antenna combination of current slot, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination;

Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; Select the minimum candidate transmitting combination of antennas of coefficient correlation as the emitting antenna combination of next time period, and be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period.

14. method as claimed in claim 13 is characterized in that, saidly sends the MBMS business datum to receiving terminal and is:

When current slot finishes, stop the corresponding transmitting antenna of current slot, with next time period as current slot, start corresponding transmitting antenna, as the current emission antenna, and utilize the corresponding code channel MBMS transmission of this current transmitting antenna professional.

15. method as claimed in claim 14 is characterized in that, this method further comprises: be each MBMS traffic assignments priority in advance;

The said corresponding code channel of current emission antenna that in current slot, utilizes transmits before the said MBMS business, further comprises:

A11. judge said MBMS business on the current emission antenna corresponding code channel in current slot whether by professional use of the higher MBMS of priority, if, process ends then; Otherwise, carry out the said corresponding code channel of current emission antenna that in current slot, utilizes and transmit said MBMS business.

16. method as claimed in claim 15 is characterized in that, said stopping further to comprise before the corresponding transmitting antenna of current slot:

A201. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A202 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A202. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding transmitting antenna of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 201, if no show is then directly returned and carried out said steps A 201.

17. the transmission method of a multimedia broadcast-multicast service MBMS is characterized in that, this method comprises:

According to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; On the space channel of each time period correspondence, send the MBMS business datum to receiving terminal;

The professional space channel of said definite each time period MBMS transmission is:

The number of transmit antennas that comprises in every group of wave beam is set,, from all transmitting antennas, chooses, obtain a plurality of transmitting antennas and divide into groups, and form the transmitting antenna grouping set according to set number of transmit antennas;

Utilize predetermined all weights that beam forming processing is carried out in each transmitting antenna grouping in the transmitting antenna grouping set, obtain many group wave beams;

In the mutual compensation principle of the gain of same angle, confirm the wave beam order between adjacent two wave beams of foundation, and each wave beam in this wave beam order is confirmed as corresponding wave beam of each time period successively.

18. method as claimed in claim 17 is characterized in that, saidly sends the MBMS business datum to receiving terminal and is:

When current slot finishes, stop the corresponding wave beam of current slot, with next time period as current slot, start corresponding wave beam, as current wave beam, and utilize deserve before the corresponding code channel MBMS transmission of wave beam professional.

19. method as claimed in claim 18 is characterized in that, this method further comprises: be each MBMS traffic assignments priority in advance;

Before the said MBMS transmission business, further comprise:

A21. judge said MBMS business the corresponding code channel of current wave beam in current slot whether by professional use of the higher MBMS of priority, if, process ends then; Otherwise, carry out the corresponding code channel MBMS transmission business that preceding wave beam is deserved in said utilization.

20. method as claimed in claim 19 is characterized in that, said stopping further to comprise before the corresponding wave beam of current slot:

A301. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A302 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A302. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding wave beam of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 301, if no show is then directly returned and carried out said steps A 301.

21. the transmission method of a multimedia broadcast-multicast service MBMS is characterized in that, this method comprises:

According to the strongest principle of channel independence, confirm the space channel that each time period MBMS transmission is professional; On the space channel of each time period correspondence, send the MBMS business datum to receiving terminal;

The professional space channel of said definite each time period MBMS transmission is:

The number of transmit antennas that comprises in every group of wave beam is set,, from all transmitting antennas, chooses, obtain a plurality of transmitting antennas and divide into groups, and form the transmitting antenna grouping set according to set number of transmit antennas;

Utilize predetermined all weights that beam forming processing is carried out in each transmitting antenna grouping in the transmitting antenna grouping set, obtain many group wave beams;

According to the wave beam number of predetermined same time period, select wave beam to form the beam combination of current slot, each wave beam in this beam combination compensates in the gain of same angle each other, and is the code channel of each the beam allocation non-overlapping copies in this beam combination;

The wave beam of selecting to compensate each other in the gain of same angle with the beam combination of current slot is formed the beam combination of next time period and is the code channel of each the beam allocation non-overlapping copies in this beam combination.

22. method as claimed in claim 21 is characterized in that, saidly sends the MBMS business datum to receiving terminal and is:

When current slot finishes, stop the corresponding wave beam of current slot, with next time period as current slot, start corresponding wave beam, as current wave beam, and utilize deserve before the corresponding code channel MBMS transmission of wave beam professional.

23. method as claimed in claim 22 is characterized in that, this method further comprises: be each MBMS traffic assignments priority in advance;

Before the said MBMS transmission business, further comprise:

A21. judge said MBMS business the corresponding code channel of current wave beam in current slot whether by professional use of the higher MBMS of priority, if, process ends then; Otherwise, carry out the corresponding code channel MBMS transmission business that preceding wave beam is deserved in said utilization.

24. method as claimed in claim 22 is characterized in that, said stopping further to comprise before the corresponding wave beam of current slot:

A301. notify said receiving terminal to report received signal code power RSCP, judge whether to exist RSCP, if then upgrade the number of receptivity poor user and execution in step A302 less than the receptivity thresholding that is provided with in advance; Otherwise, return and carry out this step;

Whether the number of A302. judging the receptivity poor user reaches the saltus step thresholding that is provided with in advance, if then carry out the said corresponding wave beam of current slot that stops; Otherwise, judge whether to arrive in advance the receptivity measurement period that is provided with, if arrive, then with the number zero clearing of receptivity poor user, and return and carry out said steps A 301, if no show is then directly returned and carried out said steps A 301.

25. a network equipment that is used for multimedia broadcast-multicast service MBMS transmission is characterized in that this network equipment comprises: MBMS scheduler module, memory module and communication module, wherein,

Said MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional; Determined spatial channel information is sent to memory module; When each time period arrives, from memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module;

Said memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission;

Spatial channel information that the current slot that said communication module reception MBMS scheduler module is sent is corresponding and the MBMS business datum that from memory module, reads; And the MBMS business datum that reads is carried on the corresponding space channel of current slot, send to receiving terminal;

Said MBMS scheduler module comprises: measure submodule, control submodule and timer, wherein,

Said measurement submodule confirm number of transmit antennas and transmitting antenna all put in order, measure all coefficient correlations between per two width of cloth transmitting antennas that put in order down, and the coefficient correlation that obtains sent to the control submodule;

Said control submodule confirms that the channel coefficient correlation reduces the factor; Reception comes from the coefficient correlation between per two width of cloth transmitting antennas of measuring submodule; The coefficient correlation that reduces the factor and receive according to determined coefficient correlation; Calculate all transmitting antenna average correlation coefficients under putting in order, the transmitting antenna order of the professional transmission of MBMS is confirmed as in minimum the putting in order of average correlation coefficient, and determined transmitting antenna is sent to memory module in proper order; Under the indication of timer, from memory module, read current slot corresponding transmitting antenna information and MBMS business datum, the MBMS business datum that reads is sent to communication module, the notification communication module is carried out the transmitting antenna saltus step;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control submodule transmitting time section.

26. the network equipment as claimed in claim 25 is characterized in that, said communication module comprises at least two width of cloth transmitting antennas, and said transmitting antenna conjunction measuring submodule carries out the measurement of coefficient correlation between transmitting antenna; Under the notice of said control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

27. a network equipment that is used for multimedia broadcast-multicast service MBMS transmission is characterized in that this network equipment comprises: MBMS scheduler module, memory module and communication module, wherein,

Said MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional; Determined spatial channel information is sent to memory module; When each time period arrives, from memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module;

Said memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission;

Spatial channel information that the current slot that said communication module reception MBMS scheduler module is sent is corresponding and the MBMS business datum that from memory module, reads; And the MBMS business datum that reads is carried on the corresponding space channel of current slot, send to receiving terminal;

Said MBMS scheduler module comprises: measure submodule, control submodule and timer, wherein,

Said measurement submodule is confirmed transmitting antenna sum and the number of transmit antennas of same time period; Form many group emitting antenna combination according to the number of transmit antennas of same time period; Measure the coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination, and the coefficient correlation that obtains is sent to the control submodule;

Said control submodule receives and comes from the coefficient correlation between per two width of cloth transmitting antennas of measuring submodule; Calculate the average correlation coefficient of all emitting antenna combination; And with average correlation coefficient less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; The candidate transmitting combination of antennas that average correlation coefficient is minimum is as the emitting antenna combination of current slot; And be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; The candidate transmitting combination of antennas of selection coefficient correlation minimum is the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period as the emitting antenna combination of next time period, and the emitting antenna combination of determined each time period is sent to memory module with corresponding code channel information; Under the indication of timer; From memory module, read current slot corresponding emitting antenna combination information, corresponding code channel information and MBMS business datum; The MBMS business datum that reads is sent to communication module, and the emitting antenna combination that the emitting antenna combination that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quits work;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control submodule transmitting time section.

28. the network equipment as claimed in claim 27 is characterized in that, said communication module comprises at least two width of cloth transmitting antennas, and said transmitting antenna conjunction measuring submodule carries out the measurement of coefficient correlation between transmitting antenna; Under the notice of said control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

29. a network equipment that is used for multimedia broadcast-multicast service MBMS transmission is characterized in that this network equipment comprises: MBMS scheduler module, memory module and communication module, wherein,

Said MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional; Determined spatial channel information is sent to memory module; When each time period arrives, from memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module;

Said memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission;

Spatial channel information that the current slot that said communication module reception MBMS scheduler module is sent is corresponding and the MBMS business datum that from memory module, reads; And the MBMS business datum that reads is carried on the corresponding space channel of current slot, send to receiving terminal;

Said MBMS scheduler module comprises measures submodule, control submodule and timer, wherein,

Said measurement submodule is measured through up channel, estimates the channel impulse response on the every width of cloth transmitting antenna of current slot, and the estimated channel impulse response that goes out is sent to the control submodule;

Said control submodule receives from the channel impulse response of measuring submodule; Calculate corresponding transmitting antenna of current slot and the channel impulse response coefficient correlation between all the other transmitting antennas; The emitting antenna selecting that the channel impulse response coefficient correlation is minimum is a corresponding transmitting antenna of next time period, and the transmitting antenna information that next time period is corresponding sends to memory module; Under the indication of timer, from memory module, read current slot corresponding transmitting antenna information and MBMS business datum, the MBMS data that read are sent to communication module, and the notification communication module is carried out the transmitting antenna saltus step;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control submodule transmitting time section.

30. the network equipment as claimed in claim 29 is characterized in that, said communication module comprises at least two width of cloth transmitting antennas, and said transmitting antenna conjunction measuring submodule carries out up channel and measures; Under the notice of said control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

31. a network equipment that is used for multimedia broadcast-multicast service MBMS transmission is characterized in that this network equipment comprises: MBMS scheduler module, memory module and communication module, wherein,

Said MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional; Determined spatial channel information is sent to memory module; When each time period arrives, from memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module;

Said memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission;

Spatial channel information that the current slot that said communication module reception MBMS scheduler module is sent is corresponding and the MBMS business datum that from memory module, reads; And the MBMS business datum that reads is carried on the corresponding space channel of current slot, send to receiving terminal;

Said MBMS scheduler module comprises measures submodule, control submodule and timer, wherein,

Said measurement submodule is confirmed transmitting antenna sum and the number of transmit antennas of same time period; Form many group emitting antenna combination according to the number of transmit antennas of same time period; Measure through up channel; Estimate the channel impulse response on the every width of cloth transmitting antenna of current slot, and the estimated channel impulse response that goes out is sent to the control submodule;

Said control submodule receives from the channel impulse response of measuring submodule; Calculate the channel impulse response coefficient correlation between per two width of cloth transmitting antennas in all emitting antenna combination; Calculate the average channel impulse response coefficient correlation of all emitting antenna combination; With average channel impulse response coefficient correlation less than the emitting antenna combination of the correlation thresholding that is provided with in advance as the candidate transmitting combination of antennas; The candidate transmitting combination of antennas that average channel impulse response coefficient correlation is minimum is as the emitting antenna combination of current slot; And be the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in this emitting antenna combination; Calculate the emitting antenna combination of current slot and the coefficient correlation of all the other candidate transmitting combination of antennas; The candidate transmitting combination of antennas of selection coefficient correlation minimum is the code channel of the every width of cloth transmitting antenna distribution non-overlapping copies in the emitting antenna combination of this next time period as the emitting antenna combination of next time period, and determined emitting antenna combination information and corresponding code channel information are sent to memory module; And under the indication of timer; From memory module, read the code channel information and the MBMS business datum of the corresponding emitting antenna combination information of current slot, correspondence; The MBMS data that read are sent to communication module, and the emitting antenna combination that the emitting antenna combination that current slot is corresponding in the notification communication module is started working and a last time period is corresponding quit work;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control submodule transmitting time section.

32. the network equipment as claimed in claim 31 is characterized in that, said communication module comprises at least two width of cloth transmitting antennas, and said transmitting antenna conjunction measuring submodule carries out up channel and measures; Under the notice of said control submodule, start working, reception comes from the MBMS business datum of controlling submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the notice of control submodule, quits work.

33. a network equipment that is used for multimedia broadcast-multicast service MBMS transmission is characterized in that this network equipment comprises: MBMS scheduler module, memory module and communication module, wherein,

Said MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional; Determined spatial channel information is sent to memory module; When each time period arrives, from memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module;

Said memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission;

Spatial channel information that the current slot that said communication module reception MBMS scheduler module is sent is corresponding and the MBMS business datum that from memory module, reads; And the MBMS business datum that reads is carried on the corresponding space channel of current slot, send to receiving terminal;

Said MBMS scheduler module comprises: control submodule and timer, wherein,

Said control submodule reads many group wave beam information from memory module; Confirm the gain of every group of wave beam on all angles through emulation; In the mutual compensation principle of the gain of same angle, confirm the wave beam order according to adjacent two wave beams, and determined wave beam is sent to memory module in proper order; Under the indication of timer, from said memory module, read current slot corresponding wave beam information and MBMS business datum, the MBMS data that read are sent to communication module, and the notification communication module is carried out the wave beam switching;

Said timer carries out timing according to the predefined time period, and when each time period begins, begins indication to control submodule transmitting time section.

34. the network equipment as claimed in claim 33 is characterized in that, said memory module is further preserved transmitting antenna information and the corresponding weights that comprise in the every group of wave beam that is provided with in advance;

Said communication module comprises: wave beam forms submodule and at least two width of cloth transmitting antennas, wherein,

Said wave beam forms submodule and from memory module, reads transmitting antenna information and the corresponding weights that comprise in every group of wave beam, obtains the transmitting antenna grouping set according to the transmitting antenna information that reads; The weights that utilization reads carry out beam forming processing to each transmitting antenna grouping in the transmitting antenna grouping set, obtain many group wave beams, and the wave beam information that obtains is sent to memory module; Reception comes from the MBMS business datum of controlling submodule; Notice according to the control submodule; Form the corresponding wave beam of current slot; And the MBMS business datum that receives sent to the transmitting antenna in the wave beam that forms, perhaps, the transmitting antenna in the corresponding wave beam of a time period quits work in the control under the notice of control submodule;

Said transmitting antenna receives and comes from the MBMS business datum that said wave beam forms submodule, and the MBMS business datum that receives is sent to receiving terminal, perhaps, under the control of said wave beam formation submodule, quits work.

35. a network equipment that is used for multimedia broadcast-multicast service MBMS transmission is characterized in that this network equipment comprises: MBMS scheduler module, memory module and communication module, wherein,

Said MBMS scheduler module is according to the strongest principle of channel independence; Confirm the space channel that each time period MBMS transmission is professional; Determined spatial channel information is sent to memory module; When each time period arrives, from memory module, read the corresponding space channel of current slot, and the spatial channel information that reads is sent to communication module;

Said memory module receives from the spatial channel information of MBMS scheduler module and preserves, and preserves the MBMS business datum that needs transmission;

Spatial channel information that the current slot that said communication module reception MBMS scheduler module is sent is corresponding and the MBMS business datum that from memory module, reads; And the MBMS business datum that reads is carried on the corresponding space channel of current slot, send to receiving terminal;

Said MBMS scheduler module comprises: control submodule and timer, wherein,

Said control submodule reads many group wave beam information and the wave beam number of same time period from memory module; Confirm of the gain of each wave beam through emulation in same angle; Based on the gain principle of complementarity; Select the beam combination of current slot; Be the code channel of each the beam allocation non-overlapping copies in this beam combination, and the beam combination of selection and current slot forms the beam combination of next time period and be the code channel of each the beam allocation non-overlapping copies in this beam combination at the wave beam that the gain of same angle compensates each other, and determined beam combination information and corresponding code channel information are sent to memory module; And under the indication of timer; From memory module, read the code channel information and the MBMS business datum of the corresponding wave beam information combination of current slot, correspondence; The MBMS data that read are sent to communication module, and in the notification communication module transmitting antenna in the corresponding beam combination of current slot start working and corresponding beam combination of a last time period in transmitting antenna quit work; Timer carries out timing based on the predefined time period, and when each time period begins, begins indication to control submodule transmitting time section.

36. the network equipment as claimed in claim 35 is characterized in that, said memory module is further preserved the wave beam number of the transmitting antenna information, corresponding weights and the same time period that are provided with in advance;

Said communication module comprises: wave beam forms submodule and at least two width of cloth transmitting antennas, wherein,

Said wave beam forms submodule and from memory module, reads transmitting antenna information and the corresponding weights that comprise in every group of wave beam, obtains the transmitting antenna grouping set according to the transmitting antenna information that reads; The weights that utilization reads carry out beam forming processing to each transmitting antenna grouping in the transmitting antenna grouping set, obtain many group wave beams, and the wave beam information that obtains is sent to memory module; Reception comes from the MBMS business datum of controlling submodule, according to the notice of control submodule, forms the corresponding wave beam of current slot, and MBMS business datum that receives and corresponding code channel information are sent to the transmitting antenna in the wave beam that forms; Perhaps, the transmitting antenna of under the notice of control submodule, controlling in the corresponding wave beam of a time period quits work;

Said transmitting antenna is started working under the control of wave beam formation submodule, receives to come from the MBMS business datum that wave beam forms submodule, utilizes corresponding code channel that the MBMS business datum that receives is sent to receiving terminal; Perhaps, under the notice of wave beam formation submodule, quit work.

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