CN101488865B - Multimedia broadcast multicast service transmission method, apparatus and base station node - Google Patents
Multimedia broadcast multicast service transmission method, apparatus and base station node Download PDFInfo
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Abstract
The present invention provides an MBMS service transmission method comprising: determining a single frequency network SFN area and a position in the SFN area of each base station node in the SFN area by an upstream node of the base station node; determining the transmission power or the power factor corresponding to the base station node according to the position information of the base station node; then performing the synchronous transmitting of the multimedia broadcast multicast service (MBMS service) with the corresponding transmission power by the base station node. The invention simultaneously provides an apparatus and base station node for implementing the MBMS service transmission, the MBMS service data transmission quality can be ensured, meanwhile the interference for the district inside of the protection area caused by the SFN area can be decreased.
Description
Technical field
The present invention relates to multimedia broadcast multi-broadcasting business (MBMS) transmission technology, relate in particular to a kind of multimedia broadcast multicast service transmission method, device and base-station node based on single-frequency network (SFN) transmission means.
Background technology
MBMS is a kind of business newly-increased in third generation partner program (3GPP) the R6 standard, the purpose of MBMS business be with a kind of mode very efficient, economic, that share be the multi-user provide can be from any to multiple spot unidirectional multi-medium data that passes down.As one of the most attractive business model in the next generation mobile communication field, the MBMS business is subjected to the great attention of operator and equipment vendors.
In the MBMS business, comprise a kind of SFN transmission means, under the SFN transmission means, a plurality of sub-districts in the SFN zone send identical information on identical carrier wave, time-frequency domain resources, terminal is by receiving the identical information that a plurality of sub-districts send, realize descending grand diversity, thereby obtain very high received signal to noise ratio, make under the SFN transmission means, can send the MBMS business of higher rate.Wherein, described SFN zone is meant: the overlay area of a certain broadcasting service.It is continuous that each sub-district in the SFN zone requires geographically.
In the prior art, based on the professional transfer process of the MBMS of SFN transmission means as shown in Figure 1, this method comprises:
Step 101: core net is determined the scope in SFN zone.
Wherein, described SFN regional extent determines that can carry out Operation and Maintenance according to traffic performance disposes or finish by other correlated processes.
Step 102: core net is carried out unified resource allocation to the sub-district in the determined SFN regional extent, and resource allocation information is sent to the pairing base-station node in each sub-district.
Here, described base-station node comprises: the base station e-NodeB of base station node B or evolution.
Step 103: the described resource allocation information configuration broadcast Traffic Channel that each base-station node is sent according to core net.
Step 104: each base-station node uses the maximum transmission power or the constant power of regulation to carry out the broadcasting service synchronized transmissions on described broadcasting service channel.
Wherein, because core net is carried out unified resource allocation to each sub-district in step 102, therefore in this step, each base-station node will carry out the synchronized transmissions of described broadcasting service on identical resource.
As seen from the above description, all base-station nodes in the SFN regional extent are all by unified distribution identical signal of synchronized transmission on identical resource, the power of the signal that obtains after then described identical signal merges is bigger, but, in the snr of received signal of above-mentioned effect terminal in improving the SFN regional extent, will bring bigger interference to peripheral neighboring area, SFN zone, thereby make the sub-district that is positioned at circumferential perimeter zone, SFN zone can't normally send data.
As shown in Figure 2; the zone that is comprised in the figure 210 is to have reached synchronous zone in the network; the zone that is comprised in the figure 220 is spendable maximum SFN zone; the SFN zone of zone 230 that wide striped is filled for determining; the annular region 240 that stria is filled is regional 230 circumferential perimeter zones; be also referred to as the protection zone in SFN zone; when all base-station nodes in the zone 230 send the MBMS business datum with the SFN transmission means; because interference is bigger, the base-station nodes in the zone 240 can't normally send data.
Summary of the invention
In view of this; main purpose of the present invention is to provide device, the base-station node of a kind of MBMS business transmitting method and realization MBMS business data transmission; when guaranteeing the MBMS business data transmission quality, can reduce of the interference of SFN zone to sub-district in the protection zone in SFN zone.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of multimedia broadcast multicast service transmission method, this method comprises:
The upstream node of A, base-station node is determined single-frequency network SFN zone, and the position of each base-station node in the SFN zone in the SFN zone;
B, determine the transmitting power of corresponding base station node correspondence according to the positional information of base-station node;
C, base-station node carry out the synchronized transmissions of multimedia broadcast multi-broadcasting business MBMS business datum with corresponding transmission power.
Wherein, described base-station node is: the base station e-NodeB of base station node B or evolution;
Accordingly, the upstream node of described base-station node is specially:
When described base-station node was NodeB, the upstream node of described base-station node was core net or radio network controller (RNC);
When described base-station node was e-NodeB, the upstream node of described base-station node was access gateway AG W.
The described definite position of each base-station node in the SFN zone is specially:
Determine whether each base-station node is positioned at the edge in SFN zone; Perhaps,
Determine that each base-station node is positioned at the center in SFN zone, centre or edge.
The transmitting power of determining base-station node described in the step B is definite by the upstream node of base-station node;
Accordingly, step B further comprises:
The upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation message that generates sent to the relevant base station node, wherein, comprise in the described resource allocation information: transmitting power or the power factor and/or the positional information of resource allocation result and this resource allocation information institute respective base station node correspondence; Perhaps,
The upstream node of base-station node generates the positional information signaling and sends to the relevant base station node according to transmitting power or the power factor and/or the positional information of base-station node correspondence; And the upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation message that generates is sent to the relevant base station node.
When comprising power factor in described resource allocation information or the described positional information signaling, the described definite transmitting power of step B is: base-station node is according to the transmitting power of described power factor calculating self correspondence.
The transmitting power of determining base-station node described in the step B is definite by base-station node;
Accordingly, steps A further comprises:
The upstream node of base-station node is according to the base-station node corresponding position information, generate the positional information signaling and send to the relevant base station node, and, the upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation message that generates is sent to the relevant base station node; Perhaps,
The upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation message that generates is sent to the relevant base station node; Wherein, comprise in the described resource allocation information: resource allocation result and the corresponding positional information of the pairing base-station node of this resource allocation information;
Accordingly, step B is specially: base-station node is determined the transmitting power of self correspondence according to the positional information signaling; Perhaps,
Base-station node is determined the power factor of self correspondence according to the positional information signaling, and determines the transmitting power of self correspondence according to determined power factor.
The described synchronized transmissions of base-station node is specially: use the method for special carrier and mixed carrier combination to carry out described synchronized transmissions.
Described special carrier and mixed carrier are combined into: special carrier is compensated or by special carrier mixed carrier is compensated by mixed carrier.
When the structure of time slot of mixed carrier and the structure of time slot of special carrier are identical, the merging in conjunction with the reservation physical layer of described special carrier and mixed carrier, and the merging of media access control layer MAC and wireless chain control layer RLC;
When the structure of time slot of mixed carrier and the structure of time slot of special carrier were incomplete same, the combination of described special carrier and mixed carrier only kept the merging of MAC layer and rlc layer.
The present invention provides a kind of device of realizing the multimedia broadcast multi-broadcasting business transmission simultaneously, and this device comprises: regional determination module, and position determination module, wherein,
The zone determination module be used for determining the SFN zone according to traffic performance, and the described SFN area information that will determine sends to position determination module;
Position determination module is used for each base-station node residing positional information in the SFN zone in definite described SFN zone.
Wherein, described position determination module is further used for: described positional information is sent to resource distribution module;
Described regional determination module is further used for: described SFN area information is sent to resource distribution module;
Accordingly, this device further comprises resource distribution module and data transmission blocks, wherein,
Resource distribution module is used for the unified distribution of the base-station node in described SFN zone resource, sends to data transmission blocks according to described positional information that receives and resource allocation result generation resource allocation information;
Data transmission blocks, the described resource allocation information that is used for receiving sends to the relevant base station node.
Described position determination module is further used for: generate the positional information signaling according to described positional information and send to data transmission blocks;
Accordingly, this device further comprises:
Data reception module, the described positional information signaling that is used for receiving sends to the relevant base station node.
Position determination module is further used for: determine base-station node corresponding transmission power or power factor according to described positional information.
Described position determination module is further used for: described positional information and/or transmitting power or power factor are sent to resource distribution module;
Described regional determination module is further used for: described SFN area information is sent to resource distribution module;
Accordingly, this device further comprises resource distribution module and data transmission blocks, wherein,
Resource distribution module is used for the base-station node in described SFN zone unified distribution resource, generates resource allocation information according to the described positional information that receives and/or transmitting power or power factor and resource allocation result and sends to data transmission blocks;
Data transmission blocks, the described resource allocation information that is used for receiving sends to the relevant base station node.
Described position determination module is further used for: generate the positional information signaling according to described positional information and/or transmitting power or power factor and send to data transmission blocks;
Accordingly, this device further comprises:
Data reception module, the described positional information signaling that is used for receiving sends to the relevant base station node.
Described regional determination module is further used for: described SFN area information is sent to resource distribution module;
Accordingly, this device further comprises:
Resource distribution module be used for the unified distribution of the base-station node in described SFN zone resource, and the generation resource allocation information sends to data transmission blocks;
Accordingly, data transmission blocks is further used for: the described resource allocation information that will receive sends to the relevant base station node.
The present invention provides a kind of base-station node of realizing the multimedia broadcast multi-broadcasting business transmission simultaneously, and this base-station node comprises: data reception module, channel configuration module, power determination module, wherein,
Data reception module is used to receive the resource allocation information that the upstream node of base-station node is sent, and described resource allocation information is sent to the channel configuration module;
The channel configuration module is used for carrying out according to described resource allocation information the configuration of broadcasting service channel;
The power determination module is used for determining the transmitting power of base-station node under self.
Comprise in the described resource allocation information: the pairing base-station node corresponding position information of resource allocation result and this resource allocation information and/or transmitting power or power factor;
Accordingly, data reception module is further used for: the described resource allocation information that will receive sends to the power determination module; The power determination module is determined the transmitting power of base-station node under self according to the positional information in the described resource allocation information and/or transmitting power or power factor.
Data reception module is further used for: receive the positional information signaling that the upstream node of base-station node is sent, and described signaling is sent to the power determination module;
Accordingly, the power determination module is determined the transmitting power of base-station node under self according to the base-station node corresponding position information that comprises in the described signaling and/or transmitting power or power factor.
The channel configuration module is further used for: configuration result is sent to data transmission blocks;
The power determination module is further used for: the described transmitting power that will determine sends to data transmission blocks;
Accordingly, this base-station node further comprises:
Data transmission blocks is used for carrying out the emission of MBMS business datum according to the described configuration result and the described transmitting power that receive.
MBMS business transmitting method provided by the present invention, device and base-station node; when the upstream node of base-station node is base-station node Resources allocation in the SFN zone; determine the position of each base-station node in the SFN zone; thereby for each base-station node is determined corresponding transmission power; make the base-station node that is positioned at the SFN edges of regions use less transmitting power to carry out the emission of MBMS business datum, thereby reduced of the interference of SFN zone for sub-district in the protection zone in SFN zone.In addition, when the base-station node that is positioned at the SFN edges of regions used less transmitting power to carry out the emission of business datum, the method that combines with mixed carrier by special carrier guaranteed to be positioned at the quality of the receiving MBMS service by terminal data of SFN edges of regions.
Description of drawings
Fig. 1 is based on the MBMS business transmitting method schematic flow sheet of SFN transmission means in the prior art;
Fig. 2 is SFN zone and SFN protection zone position view;
Fig. 3 is the realization flow schematic diagram of MBMS business transmitting method of the present invention;
The implementation method schematic diagram that Fig. 4 compensates special carrier for mixed carrier of the present invention;
The implementation method schematic diagram that Fig. 5 compensates mixed carrier for special carrier of the present invention;
Fig. 6 A and Fig. 6 B realize the apparatus structure schematic diagram of MBMS business data transmission for the present invention;
Fig. 7 realizes the base-station node structural representation of MBMS business data transmission for the present invention.
Embodiment
Basic thought of the present invention is: after determining the SFN zone, in for each base-station node unified distribution resource, determine the position of each base-station node in the SFN zone; Determine that according to described positional information each base-station node carries out the transmitting power of broadcast data emission, the base-station node that is positioned at the SFN edges of regions carries out the emission of broadcast data with less transmitting power.In addition, when base-station node carried out the broadcast data emission, the method for using special carrier to combine with mixed carrier was positioned at the quality of the receiving MBMS service by terminal data of SFN edges of regions with assurance.
Below, be described with reference to the accompanying drawings the realization of MBMS business transmitting method of the present invention, device and base-station node by specific embodiment.
Fig. 3 is the realization flow schematic diagram of MBMS business transmitting method of the present invention, and as shown in Figure 3, this method comprises:
Step 301: the upstream node of base-station node is determined the SFN zone.
Wherein, the upstream node of base-station node can have multiple situation, and when described base-station node was NodeB, the upstream node of described base-station node can be core net or radio network controller (RNC) etc.; When described base-station node was e-NodeB, the upstream node of described base-station node can be IAD (AGW) etc.
Wherein, described SFN zone determines and can carry out the Operation and Maintenance configuration or finish by other correlated processes according to traffic performance.
Step 302: the upstream node of base-station node is determined the position of each base-station node in the SFN zone in the SFN zone, and the base-station node in the described SFN zone is carried out unified resource allocation, afterwards, resource allocation information is sent to the relevant base station node.
Wherein, described base-station node comprises: NodeB or e-NodeB.
Can have multiplely for the division methods of the position of base-station node in the SFN zone, for example, can be divided into: the center in the edge in SFN zone and SFN zone; Perhaps, the center in SFN zone, centre or edge or the like.Accordingly, also can be divided into multiple situation for the definite of the position of base-station node in the SFN zone according to the position division methods.Wherein, how the upstream node of base-station node specifically determines that the particular location of base-station node in the SFN zone can use existing correlation technique under corresponding division methods, repeat no more here.
Below respectively with above-named two kinds of position division methods, the upstream node of described base-station node determined the position of base-station node in the SFN zone after the required operation of finishing be described in detail.
First kind of position division methods determines whether base-station node is in the edge in SFN zone.
In this case, the upstream node of base-station node can use to the base-station node that is in the SFN edge and send the signaling that comprises the edge cell sign, perhaps add modes such as edge cell sign in the resource allocation information that sends to the base-station node that is in the SFN edge, it is positioned at the edge in SFN zone notice relevant base station node.Thereby in following step 303, each base-station node can be determined the transmitting power of self according to whether receiving described edge cell sign.At this moment, whether base-station node is according to existing the edge cell sign to determine that the transmitting power of self can have multiple implementation method, for example:
Can dispose accordingly each base-station node by the Operation and Maintenance configuration, as disposing: the transmitting power that when edge cell as described in base-station node receives identifies, need use and the transmitting power that when edge cell as described in base-station node does not receive identifies, need use;
Perhaps, can be after definite certain base-station node be in the SFN edge by the upstream node of base-station node, in described signaling or this resource allocation information, except adding the edge cell sign, also add transmitting power or power factor that this base-station node need use.In this case, after base-station node receives described transmitting power or power factor, can determine the transmitting power that self need use; And when not receiving described transmitting power or power factor, then use in the prior aries such as maximum power of acquiescence the normal transmitting power of using to carry out the transmission of business datum.The edge cell sign that adds in described signaling or the described resource allocation information can also be omitted in this case, and directly add described transmitting power.
In the foregoing description, only listed the implementation method that to use under every kind of situation, in actual applications, a lot of other implementation methods can also have been arranged, can determine according to actual needs, repeated no more here.
In addition, the concrete division methods at SFN edges of regions, center also can have multiple, for example: divide according to the geographical position of sub-district in the SFN zone, the sub-district that is positioned at SFN zone outermost one deck as definition is in the SFN edge, and the sub-district in other SFN zones is in the center in SFN zone; Perhaps, also can divide the annoyance level of sub-district in the circumferential perimeter zone, SFN zone according to the sub-district in the SFN zone, as defining when the maximum transmission power emission is all used in the sub-district in the SFN zone, is the sub-district that is positioned at the SFN regional center to the annoyance level of circumferential perimeter sub-district, SFN zone less than the sub-district of certain set point, and be the sub-district that is positioned at the SFN edges of regions greater than the sub-district of this set point, wherein, the concrete root of number of described set point is the difference of border applied environment factually, can correspondingly adjust, do not limit here.
Second kind of position division methods determines that base-station node is in the center in SFN zone, centre or edge.
In such cases, similar with the implementation method of being enumerated in first kind of position division methods, for example, to the relevant base station node send comprise this base-station node be in center, centre or edge positional information signaling or directly in corresponding resource allocation information, add described positional information, and each base-station node is by Operation and Maintenance configuration pairing transmitting power of all places information or power factor.
Perhaps, the transmitting power or the power factor that directly in described signaling or resource allocation information, add relevant base station node correspondence; Perhaps directly described positional information is replaced with the transmitting power of relevant base station node correspondence or power factor etc.
For the situation of using power factor, for example, the power factor that the base-station node that is positioned at SFN regional center, centre and edge can be set respectively is w1, w2, w3, then no matter be that upstream node by base-station node sends described power factor or directly the power factor of positional information correspondence disposed to base-station node, can finally determine the transmitting power of the required use of each base-station node, concrete:
The transmitting power that is positioned at the base-station node at SFN center is: P1=P * w1;
The transmitting power that is positioned at the middle base-station node of SFN is: P2=P * w2;
The transmitting power that is positioned at the base-station node at SFN edge is: P3=P * w3;
Wherein, P is certain constant power that each base-station node is given in maximum transmission power or configuration, and w1, w2, w3 are power factor, generally speaking, and 0＜w3＜w2＜w1＜=1.
In addition, similar to the concrete division methods at SFN edges of regions described in first kind of position division methods, center, the concrete division methods at SFN edges of regions, centre, center also can have multiple, for example: divide according to the geographical position of sub-district in the SFN zone; Perhaps, according to the sub-district in the SFN zone annoyance level of sub-district in the circumferential perimeter zone, SFN zone is divided, as defining when the maximum transmission power emission is all used in the sub-district in the SFN zone, the annoyance level of circumferential perimeter sub-district, SFN zone is the sub-district that is positioned at the SFN regional center less than the sub-district of set point 1, and the sub-district that described annoyance level is between set point 1 and the set point 2 is to be positioned at middle sub-district, SFN zone, described annoyance level is the sub-district that is positioned at the SFN edges of regions greater than the sub-district of set point 2, wherein, set point 1 is less than set point 2, and described set point 1, the concrete numerical value of set point 2 can adjust accordingly according to the difference of actual application environment equally.
Step 303: the described resource allocation information configuration broadcast Traffic Channel that each base-station node is sent according to the upstream node of base-station node, and the definite transmitting power that self need use.
Wherein, specifically how the configuration broadcast Traffic Channel belongs to known technology to base-station node, repeats no more here.
In addition, how each base-station node determines that the transmitting power that self need use carried out more detailed description in step 302:
For first kind of position division methods, when base-station node does not receive when not comprising the edge cell sign in described signaling or the received described resource allocation information, can handle according to prior art, as using the fixed transmission power of maximum transmission power or regulation; And receive when comprising the edge cell sign in described signaling or the received described resource allocation information when base-station node, then can use with described maximum transmission power or fixed transmission power and compare the emission that less transmitting power is carried out broadcasting service.The power factor of described transmitting power or transmitting power correspondence can be carried in described signaling or resource allocation information, also can dispose to each base-station node.For second kind of position division methods,, repeat no more here with similar for the processing method of first kind of position division methods.
Step 304: each base-station node uses self corresponding transmission power, carries out the synchronized transmissions of MBMS business datum on described broadcasting service channel.
Wherein, in this step; when the base-station node that is positioned at the SFN edge carries out the synchronized transmissions of broadcasting service by reducing transmitting power; though reduced interference for sub-district in the protection zone in SFN zone; but; the user's quality of reception that is positioned at the SFN edges of regions will reduce, and in order to remedy these losses, can do some compensation on special carrier or mixed carrier.As shown in Figure 4, when on special carrier, using SFN, can on the lower mixed carrier of power, send the offset data bag, and not use SFN on the mixed carrier at this moment.Certainly, also can on the lower special carrier of power, mixed carrier be compensated, at this moment do not use SFN on the special carrier equally, as shown in Figure 5 adopting under the situation of SFN on the mixed carrier.
Discuss how to realize that above-mentioned mode by special carrier and mixed carrier combination reduces the interference of SFN in two kinds of situation below.
(1) situation of mixed carrier and the special carrier combination identical with its frame structure:
The structure of time slot of mixed carrier and the structure of time slot of special carrier are identical, so, if also be under the situation of descending time slot of mixed carrier in the professional institute of the MBMS on special carrier distributed time slot, data on special carrier and the mixed carrier can accomplish then can merge in physical layer synchronously; When if special carrier and mixed carrier can not be assigned to same time slot, just need media access control layer (MAC) and Radio Link control (RLC) layer to merge.Therefore, under this situation, it is also laminated both to have needed to keep physics, needs to keep the merging of MAC layer and rlc layer again.
(2) situation of mixed carrier and the special carrier combination different with its frame structure:
Because the structure of time slot difference, even being assigned to same time slot, mixed carrier and special carrier also can not merge eating dishes without rice or wine, like this, the physical layer that no longer needs to keep is in such cases merged, and only need keep the merging of MAC layer and rlc layer.
Wherein, specifically how to realize that the merging of mixed carrier and special carrier belongs to known technology, repeats no more here.
Fig. 6 A and Fig. 6 B are the device of realizing the MBMS business data transmission, this device goes in the upstream node of base-station node of the present invention, this device comprises: regional determination module 610, position determination module 620, resource distribution module 630 and data transmission blocks 640, wherein
Perhaps, position determination module 620 also can be according to described positional information and/or transmitting power or power factor generation positional information signaling, described positional information signaling is sent to data transmission blocks 640, send to each relevant base station node, the information interaction relation between the module as shown in Fig. 6 B.Wherein, when the upstream node of base-station node is only determined the position of each base-station node, then only comprise positional information in the positional information signaling, when the upstream node of base-station node is determined each base-station node corresponding transmission power or power factor, in the then described positional information signaling except that comprising described transmitting power or power factor, both positional information can be comprised, also described positional information can be do not comprised.
Data transmission blocks 640, the resource allocation information that is used for receiving sends to the relevant base station node; Also be used for when receiving described positional information signaling, described signaling being sent to the relevant base station node.
Fig. 7 is for realizing the base-station node structural representation of MBMS business data transmission, and this base-station node comprises: data reception module 710, channel configuration module 720, power determination module 730 and data transmission blocks 740, wherein,
Data reception module 710 is used to receive resource allocation information or positional information signaling that the upstream node of base-station node is sent.
Channel configuration module 720 is used for the configuration broadcast Traffic Channel, and configuration result is sent to data transmission blocks 740.
Power determination module 730 is used for determining the transmitting power of the required use of base-station node under self, and described transmitting power is sent to data transmission blocks 740.
Data transmission blocks 740 is used for carrying out the emission of MBMS business datum according to the described configuration result and the described transmitting power that receive.
Wherein, information interaction as shown in Figure 7 between the data reception module 710 that is comprised in the base-station node, channel configuration module 720 and the power determination module 730, but specifically carry out mutual information between above-mentioned three modules, difference according to the received data of data reception module 710 can have two kinds of situations:
First kind of situation, data reception module 710 receives the resource allocation information that the upstream node of base-station node is sent, and when comprising the position relation of base-station node correspondence and/or transmitting power (or power factor) in the described resource allocation information, the described resource allocation information that data reception module 710 will receive sends to channel configuration module 720 and power determination module 730, accordingly, channel configuration module 720 and power determination module 730 carry out the configuration of channel or determining of transmitting power according to the corresponding information in the resource allocation information respectively.
Second kind of situation, data reception module 710 receives the resource allocation information that the upstream node of base-station node is sent, also be used to receive the positional information signaling that the upstream node of base-station node is sent, do not comprise base-station node corresponding position information and/or transmitting power (or power factor) in the described resource allocation information, above-mentioned positional information and/or transmitting power (or power factor) are added in the described positional information signaling, at this moment, data reception module 710 sends to channel configuration module 720 with the resource allocation information that receives, be used for the configuration of channel, the positional information signaling that receives is sent to power determination module 730, be used for determining transmitting power.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (14)
1. a multimedia broadcast multicast service transmission method is characterized in that, this method comprises:
The upstream node of A, base-station node is determined single-frequency network SFN zone, and the position of each base-station node in the SFN zone in the SFN zone;
B, determine the transmitting power of corresponding base station node correspondence according to the positional information of base-station node;
C, base-station node carry out the synchronized transmissions of multimedia broadcast multi-broadcasting business MBMS business datum with corresponding transmission power.
2. transmission method according to claim 1 is characterized in that, described base-station node is: the base station e-NodeB of base station node B or evolution;
Accordingly, the upstream node of described base-station node is specially:
When described base-station node was NodeB, the upstream node of described base-station node was core net or radio network controller (RNC);
When described base-station node was e-NodeB, the upstream node of described base-station node was access gateway AG W.
3. transmission method according to claim 1 and 2 is characterized in that, the described definite position of each base-station node in the SFN zone is specially:
Determine whether each base-station node is positioned at the edge in SFN zone; Perhaps,
Determine that each base-station node is positioned at the center in SFN zone, centre or edge.
4. transmission method according to claim 1 and 2 is characterized in that, determines described in the step B that the transmitting power of base-station node is determined by the upstream node of base-station node;
Accordingly, step B further comprises:
The upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation information that generates sent to the relevant base station node, wherein, comprise in the described resource allocation information: transmitting power or the power factor and/or the positional information of resource allocation result and this resource allocation information institute respective base station node correspondence; Perhaps,
The upstream node of base-station node generates the positional information signaling and sends to the relevant base station node according to transmitting power or the power factor and/or the positional information of base-station node correspondence; And the upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation information that generates is sent to the relevant base station node.
5. transmission method according to claim 4, it is characterized in that, when comprising power factor in described resource allocation information or the described positional information signaling, the described definite transmitting power of step B is: base-station node is according to the transmitting power of described power factor calculating self correspondence.
6. transmission method according to claim 1 and 2 is characterized in that, determines described in the step B that the transmitting power of base-station node is determined by base-station node;
Accordingly, steps A further comprises:
The upstream node of base-station node is according to the base-station node corresponding position information, generate the positional information signaling and send to the relevant base station node, and, the upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation information that generates is sent to the relevant base station node; Perhaps,
The upstream node of base-station node carries out unified resource allocation to the base-station node in the SFN zone, and the resource allocation information that generates is sent to the relevant base station node; Wherein, comprise in the described resource allocation information: resource allocation result and the corresponding positional information of the pairing base-station node of this resource allocation information;
Accordingly, step B is specially: base-station node is determined the transmitting power of self correspondence according to the positional information signaling; Perhaps,
Base-station node is determined the power factor of self correspondence according to the positional information signaling, and determines the transmitting power of self correspondence according to determined power factor.
7. transmission method according to claim 1 is characterized in that, the described synchronized transmissions of base-station node is specially: use the method for special carrier and mixed carrier combination to carry out described synchronized transmissions.
8. transmission method according to claim 7 is characterized in that, described special carrier and mixed carrier are combined into: special carrier is compensated or by special carrier mixed carrier is compensated by mixed carrier.
9. according to claim 7 or 8 described transmission methods, it is characterized in that,
When the structure of time slot of mixed carrier and the structure of time slot of special carrier are identical, the merging in conjunction with the reservation physical layer of described special carrier and mixed carrier, and the merging of media access control layer MAC and wireless chain control layer RLC;
When the structure of time slot of mixed carrier and the structure of time slot of special carrier were incomplete same, the combination of described special carrier and mixed carrier only kept the merging of MAC layer and rlc layer.
10. device of realizing multimedia broadcast multi-broadcasting business transmission is characterized in that this device comprises: regional determination module, and position determination module, data transmission blocks, wherein,
The zone determination module be used for determining the SFN zone according to traffic performance, and the described SFN area information that will determine sends to position determination module;
Position determination module is used for each base-station node residing positional information in the SFN zone in definite described SFN zone;
And, position determination module is further used for: determine base-station node corresponding transmission power or power factor according to described positional information, and generate the positional information signaling according to described positional information and/or transmitting power or power factor and send to data transmission blocks; Accordingly, data transmission blocks is used for: the described positional information signaling that will receive sends to the relevant base station node;
Perhaps, described position determination module is further used for: generate the positional information signaling according to described positional information and send to data transmission blocks; Accordingly, data transmission blocks is used for: the described positional information signaling that will receive sends to the relevant base station node.
11. device according to claim 10 is characterized in that, described position determination module is further used for: described positional information is sent to resource distribution module;
Described regional determination module is further used for: described SFN area information is sent to resource distribution module;
Accordingly, this device further comprises resource distribution module, wherein,
Resource distribution module is used for the unified distribution of the base-station node in described SFN zone resource, sends to data transmission blocks according to described positional information that receives and resource allocation result generation resource allocation information;
And the described resource allocation information that data transmission blocks is used for receiving sends to the relevant base station node.
12. device according to claim 10 is characterized in that, described position determination module is further used for: described positional information and/or transmitting power or power factor are sent to resource distribution module;
Described regional determination module is further used for: described SFN area information is sent to resource distribution module;
Accordingly, this device further comprises resource distribution module and data transmission blocks, wherein,
Resource distribution module is used for the base-station node in described SFN zone unified distribution resource, generates resource allocation information according to the described positional information that receives and/or transmitting power or power factor and resource allocation result and sends to data transmission blocks;
Data transmission blocks, the described resource allocation information that is used for receiving sends to the relevant base station node.
13. a base-station node of realizing the multimedia broadcast multi-broadcasting business transmission is characterized in that this base-station node comprises: data reception module, channel configuration module, power determination module, wherein,
Data reception module is used to receive the resource allocation information that the upstream node of base-station node is sent, and described resource allocation information is sent to the channel configuration module;
The channel configuration module is used for carrying out according to described resource allocation information the configuration of broadcasting service channel;
The power determination module is used for determining the transmitting power of base-station node under self;
Wherein, comprise in the described resource allocation information: the pairing base-station node corresponding position information of resource allocation result and this resource allocation information and/or transmitting power or power factor;
Accordingly, data reception module is further used for: the described resource allocation information that will receive sends to the power determination module; The power determination module is determined the transmitting power of base-station node under self according to the positional information in the described resource allocation information and/or transmitting power or power factor;
Perhaps, data reception module is further used for: receive the positional information signaling that the upstream node of base-station node is sent, and described signaling is sent to the power determination module; Accordingly, the power determination module is determined the transmitting power of base-station node under self according to the base-station node corresponding position information that comprises in the described signaling and/or transmitting power or power factor.
14. base-station node according to claim 13 is characterized in that, the channel configuration module is further used for: configuration result is sent to data transmission blocks;
The power determination module is further used for: the described transmitting power that will determine sends to data transmission blocks;
Accordingly, this base-station node further comprises:
Data transmission blocks is used for carrying out the emission of MBMS business datum according to the described configuration result and the described transmitting power that receive.
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| CN1867154A (en) * | 2005-05-17 | 2006-11-22 | 上海原动力通信科技有限公司 | Beam form-endowing and realizing method for co-frequency network |
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