CN1941679A - Method for transmitting service in radio broadcasting system - Google Patents
Method for transmitting service in radio broadcasting system Download PDFInfo
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- CN1941679A CN1941679A CN 200510107404 CN200510107404A CN1941679A CN 1941679 A CN1941679 A CN 1941679A CN 200510107404 CN200510107404 CN 200510107404 CN 200510107404 A CN200510107404 A CN 200510107404A CN 1941679 A CN1941679 A CN 1941679A
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Abstract
The invention is concerned with the operation sending method in the wireless broadcast system, includes: the small section work in the system is on the same frequency point, divides the wireless resource on the frequency point into at least two sub-resources in advance, configures at least one sub-resource for each small section of the system as the sharing sub-resource, and configures at least one sub-resource for each small section as the special sub-resource, the sharing sub-resource and the special sub-resource are different; uses the sharing sub-resource to load and send the whole operation synchronously in all small sections, uses the configured special sub-resource to load and send the local operation in each small section. The invention can enhance the flexibility of the operation attempter at the condition of ensuring the frequency spectrum using rate.
Description
Technical field
The present invention relates to wireless broadcast technologies, refer to the method for transmitting service in a kind of wireless broadcast system especially.
Background technology
At present, wireless broadcast system can provide MPEG-2 audio/video business, mobile multi-media service, broadcasting service such as audio/video business H.264 for the user, detailed process as shown in Figure 1:
Business provides equipment to generate a plurality of broadcasting services and delivers to transmitting station, transmitting station carries out multiplexing or processing such as scheduling, coding to a plurality of broadcasting services, and the business datum after will encoding adopts multi-carrier modulation, such as the OFDM modulation etc., is broadcast to user terminal then on eating dishes without rice or wine.User terminal carries out OFDM to the data that receive to be separated and is in harmonious proportion after the decoding, and demultiplexing goes out the broadcasting service that will watch and represents to the user.
The method that transmitting station carries out multi-carrier modulation according to multiplexing result as shown in Figure 2, at first with business datum d
mBe assigned on the corresponding subcarrier, through serial to parallel conversion such as d
1, kThat adopt is subcarrier f
1Modulate; Through the data superposition of subcarrier-modulated and insert Cyclic Prefix, finally generate s emission signal s (t) then.
Wireless broadcast system generally adopts Da Qu system or honeycomb system that whole network is divided into the sub-district, and system adopts two kinds of networking modes to carry out service integration when business sends, and is respectively single frequency network (SFN) and multiple frequency network, MFN (MFN).
The service integration of method one, SFN networking
When adopting the SFN networking, system's frequency that use all sub-districts in the network is all identical, supposes that this frequency is F1, and the transmission business of all sub-districts supposes to be program A, program B and program C too.Because broadcasting service adopts the OFDM modulation, so system's frequency is divided into a plurality of subcarriers again business datum is modulated.When user terminal was positioned at the neighbor cell border, the wireless signal of different districts constituted strong multipath signal and arrives user terminal.Disturb professional the reception for fear of strong multipath signal, strong multipath signal is changed into useful signal, the transmitting station of all sub-districts all needs to satisfy following synchronous condition: a, Frequency Synchronization among the SFN, and just business datum being carried out the corresponding subcarrier of OFDM modulation must be identical; B, time synchronized, promptly same code stream must be at one time sent from the transmitting station of different sub-districts; C, bit synchronous are called content synchronization again, promptly need to send identical business tine.
That is to say, adopt the same bit of SFN networking to be modulated at one time on the same subcarrier, otherwise can there be mutual interference phenomenon in different districts at cell boarder.
Service integration in the SFN networking can be saved frequency spectrum resource, but requires the transmitting station of different districts to send identical business tine, thereby causes the service dispatching of sub-district dumb.
The service integration of method two, MFN networking
As shown in Figure 3, the frequency that use adjacent three sub-districts is respectively F1, F2 and F3, and the transmitting station of these three sub-districts needn't carry out time synchronized, Frequency Synchronization and content synchronization, so can send different business tines.User terminal can carry out signal search to neighbor cell when being in idle condition, when the signal quality of finding another sub-district is better, switches to the measured sub-district of matter and continue program receiving.
When adopting the networking of MFN mode,,, can send the business datum that self needs arbitrarily so the service dispatching of each sub-district transmitting station is comparatively flexible because the business tine that different districts sends can be inequality.But because existing multicarrier system all is the broadband, the frequency range that each frequency takies all has several million bandwidth, so this method is low to the utilance of frequency spectrum.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for transmitting service in a kind of wireless broadcast system, makes all sub-districts in the network using under the situation of same frequency, can send different business tines.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
Method for transmitting service in a kind of wireless broadcast system, the cell operation in the system are divided at least two child resources with the Radio Resource on the described frequency in advance on same frequency, this method comprises:
A, be at least one child resource of all sub-district assignments in the system as common child resource, and be at least one child resource of each sub-district assignment as peculiar child resource, described common child resource and peculiar child resource are inequality;
B, in all sub-districts, use the overall situation of described common child resource carrying and all sub-districts of synchronized transmission professional, in each sub-district, use assignment to give the peculiar child resource carrying of self and send self local service.
Radio Resource is divided into two child resources that have nothing in common with each other, and then the described method of step a is specially: in two child resources one of them is assigned as the common child resource of all sub-districts; In two child resources another is assigned as the peculiar child resource of each sub-district.
Radio Resource is divided into the child resource that has nothing in common with each other more than two, and then the described method of step a is specially: one of them that will divide in the child resource that obtains is assigned as the common child resource of all sub-districts; In all the other child resources outside common child resource is child resource of any assignment in each sub-district.
When system adopted frequency multiplexing mode to be divided into cellular cell, described Radio Resource was divided the child resource number of acquisition greater than multiplexing coefficient;
Then step a is described for the method for the peculiar child resource of each sub-district assignment is: be child resource of each sub-district assignment in the channeling scope as the peculiar child resource of this sub-district, assignment gives the peculiar child resource of the sub-district that is positioned at the adjacent position inequality.
When system divides was an above sub-district, described Radio Resource was divided the child resource number of acquisition greater than the sub-district number;
Then step a is described for the method for the peculiar child resource of each sub-district assignment is: be the peculiar child resource of the child resource of each sub-district assignment in the system as this sub-district, assignment gives the peculiar child resource of the sub-district that is positioned at the adjacent position inequality.
Described Radio Resource comprises frequency resource, time resource, sign indicating number resource, and the combination in any of above-mentioned three kinds of resources.
When the Radio Resource of described frequency is frequency resource, in advance frequency resource is divided at least two sub carrier group, each sub carrier group comprises at least one subcarrier, then will divide the sub carrier group that obtains among the step a and be assigned as common sub carrier group and peculiar sub carrier group respectively;
The described method of step b is specially: use subcarrier-modulated and synchronized transmission overall situation business datum in the common sub carrier group in all sub-districts, give the subcarrier-modulated in the peculiar sub carrier group of self and send the local service data in each sub-district use assignment.
When the Radio Resource of described frequency is time resource, in advance time resource is divided at least two time slicings, then will divides the time slicing that obtains among the step a and be assigned as common time slicing and peculiar time slicing respectively;
The described method of step b is specially: all sub-districts subcarrier-modulated that the using system frequency comprises in common time slicing and synchronized transmission overall situation business datum, each sub-district subcarrier-modulated that the using system frequency comprises in the peculiar time slicing of self is given in assignment also sends the local service data.
When the Radio Resource of described frequency comprises frequency resource and time resource, in advance the Radio Resource two dimension is divided at least two group child resources, every group of child resource comprises time corresponding burst and sub carrier group, then will divide the child resource that obtains among the step a and be assigned as common child resource and peculiar child resource respectively, described common child resource comprises common time slicing and common sub carrier group, and described peculiar child resource comprises peculiar time slicing and peculiar sub carrier group;
The described method of step b is specially: subcarrier-modulated and the synchronized transmission overall situation business datum in the common sub carrier group used in all sub-districts in common time slicing, each sub-district is used the subcarrier-modulated in the peculiar sub carrier group and sent the local service data in the peculiar time slicing of self is given in assignment.
When the Radio Resource of described frequency is the sign indicating number resource, in advance the sign indicating number resource division is at least two spread-spectrum code chips, then will divides the spread-spectrum code chip that obtains among the step a and be assigned as common spread-spectrum code chip and peculiar spread-spectrum code chip respectively;
The described method of step b is specially: all sub-districts use common spread-spectrum code chip that overall business datum is carried out the chip spread spectrum, and synchronized transmission after the subcarrier-modulated that the spread spectrum result is comprised by system's frequency; Each sub-district uses assignment the local service data to be carried out the chip spread spectrum for the peculiar spread-spectrum code chip of self, and sends after the subcarrier-modulated that the spread spectrum result is comprised by system's frequency.
When the Radio Resource of described frequency comprises frequency resource and sign indicating number resource, in advance the Radio Resource two dimension is divided at least two group child resources, every group of child resource comprises corresponding sub carrier group and/or spread-spectrum code chip, then will divide the child resource that obtains among the step a and be assigned as common child resource and peculiar child resource respectively, described common child resource comprises common sub carrier group, and described peculiar child resource comprises peculiar sub carrier group and peculiar spread-spectrum code chip;
The described method of step b is specially: subcarrier-modulated and the synchronized transmission overall situation business datum in the common sub carrier group used in all sub-districts, each sub-district uses assignment the local service data to be carried out the chip spread spectrum for the peculiar spread-spectrum code chip of self, and the spread spectrum result is sent after by the subcarrier-modulated in the peculiar sub carrier group.
As seen from the above technical solution, method for transmitting service in this wireless broadcast system of the present invention, original single frequency network is transformed, use in all sub-districts under the situation of same system frequency, Radio Resource is divided at least two child resources, and be at least one common child resource of all sub-district assignments, and be the peculiar child resource of each sub-district assignment, common child resource and peculiar child resource are inequality.The common child resource synchronized transmission of the professional employing of the overall situation, the local service of each sub-district adopts the peculiar child resource of institute's assignment to send, and under the situation that guarantees the availability of frequency spectrum, improves the flexibility ratio of service dispatching.User terminal can be isolated overall business and local service according to common child resource and peculiar child resource, thereby has avoided the interference between the two class business.Described Radio Resource comprises frequency resource, time resource, sign indicating number resource, and the combination in any of these three kinds of resources.
Further, when Radio Resource is divided into child resource, make the child resource number, and be the different peculiar child resource of each sub-district assignment in the system or in the channeling scope greater than sub-district number in the network or multiplexing coefficient.Like this, when user terminal receives local service on the neighbor cell border, can isolate the local service of self, thereby avoid the interference between the local service of neighbor cell according to different peculiar child resources.
Description of drawings
Fig. 1 is the detailed process that wireless broadcast system sends broadcasting service in the prior art;
Fig. 2 is the schematic diagram of multi-carrier modulation in the prior art;
Fig. 3 is the schematic diagram of MFN networking in the prior art;
Fig. 4 (a) and Fig. 4 (b) are the sub-district distribution map of medium frequency multiplex system of the present invention;
Fig. 5 carries out multiplexing schematic diagram for adopting the sign indicating number resource in the fourth embodiment of the invention to the OFDM symbol;
Fig. 6 is the realization figure of chip spread spectrum module in the fourth embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Among the present invention, two kinds of method settings are adopted in the sub-district of digital radio broadcast system, are respectively honeycomb system He Da district systems.Be provided with based on above-mentioned two kinds of sub-districts, method for transmitting service of the present invention is as follows:
Embodiment one,
For the situation of honeycomb system, the cellular cell of digital radio broadcast system adopts frequency multiplexing mode to cover, and same frequency F1 is used in all interior sub-districts of channeling scope.The multiplexing coefficient that makes system is K, and then the interior sub-district of channeling scope distributes shown in Fig. 4 (a) and Fig. 4 (b) in the system, and the K of Fig. 4 (a) is 4, and the K of Fig. 4 (b) is 7.Based on the said system framework, suppose that the cell id of all cellular cells in the channeling scope is X, the X value from 1 to K.
When service integration, all subcarriers that comprise among the frequency F1 of system are divided into K+1 sub carrier group SCG (i), subcarrier group number i value is 1,2 ..., K+1.
Choosing subcarrier group number i is the common sub carrier group of sub carrier group SCG (K+1) conduct of K+1, uses the subcarrier in the selected common sub carrier group overall professional at all sub-district synchronized transmissions when carrying out the OFDM modulation.Described overall business refers to the common service of all cellular cells in the system, such as CCTV TV programme etc.
When sending overall situation business, need to satisfy following principle: a, all sub-districts synchronously in the identical moment, the use same sub-carrier sends identical content; B, neighbor cell should satisfy the synchronized transmission condition, and promptly the signal time delay difference of boundary is less than OFDM protection gap length.Based on mentioned above principle, even at cell boarder, overall business also can normally receive.Method for transmitting service when sending method that the overall situation is professional and existing SFN networking is similar, does not give unnecessary details herein.
Choose subcarrier group number i and the identical sub carrier group SCG (X) of self cell id X, as the peculiar sub carrier group of respective cell X.Carry out OFDM when modulation in each sub-district, use the subcarrier carrying in self the peculiar sub carrier group and send local service.Because the local service of each sub-district adopts different sub carrier group carryings and sends, so user terminal can not be subjected to the interference of neighbor cell when cell boarder receives local service.Simultaneously, have nothing in common with each other owing to carry overall situation sub carrier group professional and local service, so also there is not interference between overall business and the local service.
Situation for the Da Qu system, two sub-districts are arranged: sub-district 1 and sub-district 2 in the supposing the system, the transmitting station of these two sub-districts adopts identical frequency, the transmission content part of two sub-districts is identical, part is different, such as: the F1 of sub-district 1 goes up and sends professional A, B, C, D and E, and the F1 of sub-district 2 goes up and sends professional A, B, C, F and H.
The subcarrier that comprises among the frequency F1 of system is divided into three sub carrier group SCG (Sub-CarrierGroup), is respectively SCG1, SCG2 and SCG3, and certain subcarrier can only belong to one of them sub carrier group.
For the transmitting station of sub-district 1, the transmission of these three sub carrier group of SCG1, SCG2 and SCG3 thes contents are as follows: SCG1 sends the local service D and the E of sub-district 1; SCG2 sends 0; SCG3 sends overall professional A, B and the C of sub-district 1 and sub-district 2.
For the transmitting station of sub-district 2, the transmission of these three sub carrier group of SCG1, SCG2 and SCG3 thes contents are as follows: SCG1 sends 0; SCG2 sends the local service F and the H of sub-district 2; SCG3 sends overall professional A, B and the C of sub-district 1 and sub-district 2.
Wherein, the local service that sends on SCG1 of the transmitting station of sub-district 1 can freely be dispatched according to oneself requirement.Similarly, the local service that sends on SCG2 of the transmitting station of sub-district 2 also can freely be dispatched according to oneself requirement.
No matter the situation of honeycomb system or Da Qu system, when not considering the border interference of local service, such as being set, user terminal can't receive local service at boundary, the subcarrier that comprises among the frequency F1 of system can also be divided into two sub carrier group SCG1 and SCG2, all sub-districts all adopt the SCG1 synchronized transmission overall situation professional, and adopt SCG2 to send local service, just can avoid the interference between overall business and the local service well.Perhaps, the subcarrier that comprises among the frequency F1 of system is divided into two above sub carrier group, all sub-districts all adopt one of them sub carrier group synchronized transmission overall situation professional, remaining sub carrier group can be distributed arbitrarily, inequality such as the sub carrier group that use the sub-district that only guarantees to be positioned at the adjacent position in minute timing, the sub carrier group that use non-adjacent sub-district can be identical.
Embodiment two,
For the situation of honeycomb system, the sub-district in the system distributes identical with embodiment one, and multiplexing coefficient is K.System time is divided into K+1 time slicing TS (j), and time slicing j value is 1,2 ..., K+1.Cellular cell burst service time TS (j) in the system sends professional method:
The burst j access time time slicing TS (X) identical with cell id X, all subcarriers carryings that the local service of cellular cell X is comprised in system's frequency in time slicing TS (X) send.Because the local service of each sub-district adopts different time slicing carryings and sends, so user terminal can not be subjected to the interference of neighbor cell when cell boarder receives local service.
Access time, burst j was the time slicing TS (K+1) of K+1, and the overall situation that is used for all sub-districts of synchronized transmission is professional.The transmission principle and the prior art of overall situation business are similar, repeat no more herein.
Situation for the Da Qu system, two sub-districts are arranged: sub-district 1 and sub-district 2 in the supposing the system, the transmitting station of these two sub-districts adopts identical frequency F1, the transmission content part of two sub-districts is identical, part is different, such as: the F1 of sub-district 1 goes up and sends professional A, B, C, D and E, and the F1 of sub-district 2 goes up and sends professional A, B, C, F and H.
Time-domain is divided into three time slicings (TS, Time Slice), is respectively TS1, TS2 and TS3, and each OFDM symbol can only use one of them time slicing of TS1, TS2 and TS3 to send.
Transmitting station for sub-district 1, the transmission of these three time slicings of TS1, TS2 and TS3 thes contents are as follows: TS1 is used to send the local service D and the E of sub-district 1, these two local services adopt OFDM modulation same as the prior art when sending, promptly all subcarriers in the using system frequency are modulated and sent the business datum of local service D and E in the TS1 time slicing; TS2 sends 0; TS3 is used to send overall professional A, B and the C of sub-district 1 and sub-district 2, and these three overall situation business also adopt OFDM modulation same as the prior art when sending.
For the transmitting station of sub-district 2, the transmission of these three time slicings of TS1, TS2 and TS3 thes contents are as follows: TS1 sends 0; TS2 sends the local service F and the H of sub-district 2; TS3 sends overall professional A, B and the C of sub-district 1 and sub-district 2.
No matter the situation of honeycomb system or Da Qu system when not considering the border interference of local service, also can be divided into the time two time slicing TS1 and TS2, all sub-districts all adopt the TS1 synchronized transmission overall situation professional, and adopt TS2 to send local service.Perhaps, time resource is divided into two above time slicings, all sub-districts all adopt one of them time slicing synchronized transmission overall situation professional, remaining time slicing can distribute arbitrarily, inequality such as the time slicing that use the sub-district that only guarantees to be positioned at the adjacent position in minute timing, the time slicing that use non-adjacent sub-district can be identical.
Embodiment three,
For the situation of honeycomb system, the sub-district in the system distributes identical with embodiment one, and multiplexing coefficient is K.Radio Resource is marked off timeslice-sub carrier group (TFG according to time domain and frequency domain two dimension, TimeSlice-SubCarrier Group), each OFDM symbol only can send with one of them TFG (k), and described TFG (k) comprises time corresponding burst and sub carrier group.Cellular cell in the system uses TFG (k) to send professional method and is specially:
Access time sheet-subcarrier group number k and the identical TFG (X) of self cell id X, the local service of cellular cell X is sent with TFG (X) carrying, promptly in TFG (X) time corresponding burst, the local service data are modulated and sent with the sub carrier group that TFG (X) is corresponding.Access time, sheet-subcarrier group number k was the TFG (K+1) of K+1, and the overall situation that sends all sub-districts is professional.
Situation for the Da Qu system, two sub-districts are arranged: sub-district 1 and sub-district 2 in the supposing the system, the transmitting station of these two sub-districts adopts identical frequency F1, the transmission content part of two sub-districts is identical, part is different, such as: the F1 of sub-district 1 goes up and sends professional A, B, C, D and E, and the F1 of sub-district 2 goes up and sends professional A, B, C, F and H.
Radio Resource is divided into three TFG according to time domain and frequency domain, is respectively TFG1, TFG2 and TFG3, each OFDM symbol d
IjOnly belong to TFG1, TFG2 and TFG3 wherein one group.
For the transmitting station of sub-district 1, what TFG1, TFG2 and TFG3 carried thes contents are as follows: TFG1 sends the local service D and the E of sub-district 1; TFG2 sends 0, the OFDM symbol d that just sends on TFG2
IjAll be 0; TFG3 sends overall professional A, B and the C of sub-district 1 and sub-district 2.
For the transmitting station of sub-district 2, what TFG1, TFG2 and TFG3 carried thes contents are as follows: TFG1 sends 0; TFG2 sends the local service F and the H of sub-district 1; TFG3 sends overall professional A, B and the C of sub-district 1 and sub-district 2.
No matter the situation of honeycomb system or Da Qu system, when not considering the border interference of local service, also Radio Resource can be divided into two groups according to time domain and frequency domain, be respectively TFG1 and TFG2, all sub-districts all adopt the TFG1 synchronized transmission overall situation professional, and adopt TFG2 to send local service.
Embodiment four,
In the present embodiment, by the sign indicating number resource OFDM symbol is carried out the chip spread spectrum, the detailed process of realization service integration as shown in Figure 5.Wherein, the chip set of each subcarrier f employing may be different.Described chip set difference refers to the number S difference of the Walsh function that each chip set comprises, perhaps Walsh function W
Ij 2MDifference, or Walsh CWinInetConnection type difference is W
Ij 2MThe M difference.In addition, can carry out the chip spread spectrum to some subcarrier according to actual needs, some does not carry out the chip spread spectrum.
Typical chip spread spectrum adopts existing Walsh sign indicating number to realize, its chip spread spectrum module as shown in Figure 6.
To be example illustrate the method for present embodiment the situation of following Yi Da district system in detail, two sub-districts are arranged: sub-district 1 and sub-district 2 in the supposing the system, the transmitting station of these two sub-districts adopts identical frequency, the transmission content part of two sub-districts is identical, part is different, such as: the F1 of sub-district 1 goes up and sends professional A, B, C, D and E, and the F1 of sub-district 2 goes up and sends professional A, B, C, F and H.Actual business sends and can adopt dual mode to realize again, is respectively: (one) complete code branch; (2) sign indicating number divides and the frequency division combination.
(1) complete code branch
With Walsh function W
i 2M(i=0,1 ..., 2
M-1) is divided into three groups of { W
Ai 2M, { W
Bi 2MAnd { W
Ci 2M, { W wherein
Ai 2MBe that sub-district 1 and sub-district 2 are used to modulate the professional Walsh sign indicating number of the overall situation, { W
Bi 2MBe the Walsh sign indicating number of sub-district 1 modulation local service, { W
Ci 2MIt is the Walsh sign indicating number of sub-district 2 modulation local services.
Just, the spread-spectrum code chip of each subcarrier employing of sub-district 1 comprises { W
Ai 2MAnd { W
Bi 2M, { W wherein
Ai 2MTransmission overall situation business, { W
Bi 2MThe transmission local service.Detailed process is as follows: use { W
Ai 2MOverall business datum carried out the chip spread spectrum after, the spread spectrum result is modulated and synchronized transmission with all subcarriers in system's frequency; Use { W
Bi 2MThe local service data are carried out the chip spread spectrum after, the spread spectrum result is modulated and sends with all subcarriers in system's frequency.
The spread-spectrum code chip that each subcarrier of sub-district 2 adopts comprises { W
Ai 2MAnd { W
Ci 2M, { W wherein
Ai 2MTransmission overall situation business, { W
Ci 2MThe transmission local service.
In sub-district 1 and the sub-district 2, with spread-spectrum code chip { W
Ai 2MWhen the carrying overall situation is professional, need satisfy following principle: a, chip synchronization, just on identical subcarrier, with { W
Ai 2MThe business tine of chip spread spectrum must keep identical in the identical moment; The sideband signal delay inequality of b, sub-district 1 and sub-district 2 should be protected gap length less than OFDM.
(2) sign indicating number divides and the frequency division combination
The subcarrier that system's frequency is comprised is divided into two sub carrier group SCG1 and SCG2, and with Walsh sign indicating number W
i 2M(i=0,1 ..., 2
M-1) is divided into { W
Ai 2MAnd { W
Bi 2MTwo groups.
For the transmitting station of sub-district 1, what send on these two groups of sub carrier group of SCG1 and SCG2 thes contents are as follows: SCG1 sends overall professional A, B and the C of sub-district 1 and sub-district 2, and does not carry out spread spectrum; SCG2 sends local service D and E, uses chip set { W
Ai 2MCarry out spread spectrum.Detailed process is as follows: the business datum of the subcarrier-modulated among the use SCG1 and the synchronized transmission overall situation professional A, B and C; Use { W
Ai 2MThe business datum of local service D and E is carried out the chip spread spectrum, and the spread spectrum result is sent after by the subcarrier-modulated among the SCG2.
For the transmitting station of sub-district 2, what send on these two groups of sub carrier group of SCG1 and SCG2 thes contents are as follows: SCG1 sends overall professional A, B and the C of sub-district 1 and sub-district 2, and does not carry out spread spectrum; SCG2 sends local service F and H, uses chip set { W
Bi 2MCarry out spread spectrum.
In the present embodiment, method for transmitting service and Da Qu system when adopting honeycomb system division of cells are similar, do not give unnecessary details herein.
Except that above-mentioned four embodiment, can also adopt sign indicating number to divide and a time-division combination, and frequency division, time-division and sign indicating number divide and be incorporated into the industry transmission of being engaged in, the processing method of both of these case and above-mentioned several embodiment are similar, repeat no more herein.
By the above embodiments as seen, method for transmitting service in this wireless broadcast system of the present invention, use in all sub-districts under the situation of same frequency, Radio Resource is divided at least two child resources, and be that at least one common child resource of all sub-district assignments sends overall situation business, for the peculiar child resource of each sub-district assignment sends local service, thereby improve the flexibility ratio of service dispatching.
Claims (11)
1, the method for transmitting service in a kind of wireless broadcast system, the cell operation in the system is characterized in that on same frequency, in advance the Radio Resource on the described frequency is divided at least two child resources, this method comprises:
A, be at least one child resource of all sub-district assignments in the system as common child resource, and be at least one child resource of each sub-district assignment as peculiar child resource, described common child resource and peculiar child resource are inequality;
B, in all sub-districts, use the overall situation of described common child resource carrying and all sub-districts of synchronized transmission professional, in each sub-district, use assignment to give the peculiar child resource carrying of self and send self local service.
2, method according to claim 1 is characterized in that, Radio Resource is divided into two child resources that have nothing in common with each other, and then the described method of step a is specially: in two child resources one of them is assigned as the common child resource of all sub-districts; In two child resources another is assigned as the peculiar child resource of each sub-district.
3, method according to claim 1, it is characterized in that, Radio Resource is divided into the child resource that has nothing in common with each other more than two, and then the described method of step a is specially: one of them that will divide in the child resource that obtains is assigned as the common child resource of all sub-districts; In all the other child resources outside common child resource is child resource of any assignment in each sub-district.
4, method according to claim 3 is characterized in that, when system adopted frequency multiplexing mode to be divided into cellular cell, described Radio Resource was divided the child resource number of acquisition greater than multiplexing coefficient;
Then step a is described for the method for the peculiar child resource of each sub-district assignment is: be child resource of each sub-district assignment in the channeling scope as the peculiar child resource of this sub-district, assignment gives the peculiar child resource of the sub-district that is positioned at the adjacent position inequality.
5, method according to claim 3 is characterized in that, when system divides was an above sub-district, described Radio Resource was divided the child resource number of acquisition greater than the sub-district number;
Then step a is described for the method for the peculiar child resource of each sub-district assignment is: be the peculiar child resource of the child resource of each sub-district assignment in the system as this sub-district, assignment gives the peculiar child resource of the sub-district that is positioned at the adjacent position inequality.
According to each described method of claim 1 to 5, it is characterized in that 6, described Radio Resource comprises frequency resource, time resource, sign indicating number resource, and the combination in any of above-mentioned three kinds of resources.
7, method according to claim 6, it is characterized in that, when the Radio Resource of described frequency is frequency resource, in advance frequency resource is divided at least two sub carrier group, each sub carrier group comprises at least one subcarrier, then will divide the sub carrier group that obtains among the step a and be assigned as common sub carrier group and peculiar sub carrier group respectively;
The described method of step b is specially: use subcarrier-modulated and synchronized transmission overall situation business datum in the common sub carrier group in all sub-districts, give the subcarrier-modulated in the peculiar sub carrier group of self and send the local service data in each sub-district use assignment.
8, method according to claim 6, it is characterized in that, when the Radio Resource of described frequency is time resource, in advance time resource is divided at least two time slicings, then will divides the time slicing that obtains among the step a and be assigned as common time slicing and peculiar time slicing respectively;
The described method of step b is specially: all sub-districts subcarrier-modulated that the using system frequency comprises in common time slicing and synchronized transmission overall situation business datum, each sub-district subcarrier-modulated that the using system frequency comprises in the peculiar time slicing of self is given in assignment also sends the local service data.
9, method according to claim 6, it is characterized in that, when the Radio Resource of described frequency comprises frequency resource and time resource, in advance the Radio Resource two dimension is divided at least two group child resources, every group of child resource comprises time corresponding burst and sub carrier group, then will divide the child resource that obtains among the step a and be assigned as common child resource and peculiar child resource respectively, described common child resource comprises common time slicing and common sub carrier group, and described peculiar child resource comprises peculiar time slicing and peculiar sub carrier group;
The described method of step b is specially: subcarrier-modulated and the synchronized transmission overall situation business datum in the common sub carrier group used in all sub-districts in common time slicing, each sub-district is used the subcarrier-modulated in the peculiar sub carrier group and sent the local service data in the peculiar time slicing of self is given in assignment.
10, method according to claim 6, it is characterized in that, when the Radio Resource of described frequency is the sign indicating number resource, in advance the sign indicating number resource division is at least two spread-spectrum code chips, then will divides the spread-spectrum code chip that obtains among the step a and be assigned as common spread-spectrum code chip and peculiar spread-spectrum code chip respectively;
The described method of step b is specially: all sub-districts use common spread-spectrum code chip that overall business datum is carried out the chip spread spectrum, and synchronized transmission after the subcarrier-modulated that the spread spectrum result is comprised by system's frequency; Each sub-district uses assignment the local service data to be carried out the chip spread spectrum for the peculiar spread-spectrum code chip of self, and sends after the subcarrier-modulated that the spread spectrum result is comprised by system's frequency.
11, method according to claim 6, it is characterized in that, when the Radio Resource of described frequency comprises frequency resource and sign indicating number resource, in advance the Radio Resource two dimension is divided at least two group child resources, every group of child resource comprises corresponding sub carrier group and/or spread-spectrum code chip, then will divide the child resource that obtains among the step a and be assigned as common child resource and peculiar child resource respectively, described common child resource comprises common sub carrier group, and described peculiar child resource comprises peculiar sub carrier group and peculiar spread-spectrum code chip;
The described method of step b is specially: subcarrier-modulated and the synchronized transmission overall situation business datum in the common sub carrier group used in all sub-districts, each sub-district uses assignment the local service data to be carried out the chip spread spectrum for the peculiar spread-spectrum code chip of self, and the spread spectrum result is sent after by the subcarrier-modulated in the peculiar sub carrier group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510107404 CN1941679A (en) | 2005-09-30 | 2005-09-30 | Method for transmitting service in radio broadcasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510107404 CN1941679A (en) | 2005-09-30 | 2005-09-30 | Method for transmitting service in radio broadcasting system |
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| Publication Number | Publication Date |
|---|---|
| CN1941679A true CN1941679A (en) | 2007-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510107404 Pending CN1941679A (en) | 2005-09-30 | 2005-09-30 | Method for transmitting service in radio broadcasting system |
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| CN (1) | CN1941679A (en) |
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