CN101873715A - Methods, systems and equipment for establishing data transmission channel in presence of CoMP (Coordinated Multi-point transmission/reception) and transmitting - Google Patents
Methods, systems and equipment for establishing data transmission channel in presence of CoMP (Coordinated Multi-point transmission/reception) and transmitting Download PDFInfo
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Abstract
The invention discloses a method for establishing a data transmission channel in the presence of CoMP (Coordinated Multi-point transmission/reception). The method comprises the following steps of: sending a coordinated multi-point transmission request to a coordinated eNB (evolution Base Station) by a service eNB, wherein the request comprises bandwidth information required by data transmission; and establishing a data transmission channel by the coordinated eNB according to the bandwidth information, wherein the data transmission channel is used for carrying out data and/or information exchange with the service eNB. Through the method, in the process of establishing the data channel, a connection based on an RAB (Radio Access Bearer) level is avoided, and the transmission amount of information in the process of establishing the data channel is reduced. The invention also discloses a method for transmitting data in the presence of CoMP, a data transmission channel, a data transmission system and an evolution base station.
Description
Technical field
The present invention relates to the communications field, (Coordinated Multi-point transmission/reception CoMP) sets up method, system and the equipment of data transmission channel and transfer of data under the technology to relate in particular to a kind of cooperative multipoint transmission.
Background technology
The CoMP technology is meant the data transmission/reception of the collaborative UE of participation of a plurality of transmission points that separates on the geographical position, to improve edge UE received signal quality.The CoMP technology is divided into descending CoMP technology and up CoMP technology, and descending CoMP technology is further divided into Combined Treatment (Joint Processing, JP) mode and combined dispatching (Coordinated Scheduling, CS) mode again.In the Combined Treatment mode, data all may be transmitted to UE in a plurality of sub-districts, to strengthen the quality of UE received signal.In the combined dispatching mode, have only the affiliated sub-district of UE to send data to UE, the mode by scheduling between the cooperation district is the resource that different UE distributes mutually orthogonal, reduces the interference that UE is subjected to.Up CoMP technology is meant that a plurality of sub-districts receive the upstream data that UE sends, and each sub-district is finally finished data by the sub-district under the UE and merged and demodulation through certain processing.
A plurality of sub-districts of CoMP participating technology can belong to same evolution base station (eNB), also can belong to different e NB respectively.At different CoMP types, each minizone needs mutual information type also different.(Joint Transmission) is example with the joint transmission in the Combined Treatment, and each minizone needs interaction data information and schedule information.If COMP is Intra-eNB, because a plurality of sub-districts of CoMP participating belong to same eNB, therefore, the minizone is than being easier to the mutual of the information that realizes.But for the CoMP system of Inter eNB, because a plurality of sub-districts of CoMP participating belong to different eNB, therefore, mutual just needs of information realizes by the interface between eNB.
Transfer of data between the existing eNB realizes by X2 interface.X2 interface control plane employing SCTP (Stream Control Transmission Protocol, SCTP), for control messages provides reliable transmission.User's face of X2 interface provides the function of the data information transfer between the eNB.The transmission network layer of X2-UP is transmitted based on IP, and employing GPRS user-plane tunnel agreement (GTP-U) is transmitted the user face data between the eNB on the UDP/IP agreement.The GTP-U agreement utilizes tunneling mechanism that the business of carrying user data bag is provided, and the tunnel at this T-PDU place is indicated in tunnel end identifier (TEID) in the GTP packet header.
In existing protocol, the X2 user-plane transmissions between eNB is only relevant with handoff procedure, when carrying out the X2 user-plane transmissions, adopts the relevant signaling of UE, and RAB (RAB) level of setting up between UE and the CN connects.In the connection procedure of RAB level, the eNB under the UE need be to collaborative eNB transmission all information about this UE.
And under the CoMP technology, only carry out the transmission of physical layer between eNB, collaborative eNB can't correctly resolve the RAB level information that receives, in order to allow the correct RAB level information that receives of resolving of collaborative eNB, need in transmission, indication work in coordination with the related channel program that eNB transmits RAB level information, do the traffic carrying capacity that can increase information transmitted amount and each eNB like this, strengthen the complexity that data transmission channel is set up, be unfavorable for the execution of data transmission procedure; Simultaneously, cooperation district among the collaborative eNB only is responsible for by the air interface cooperative data transmission, do not need to know the relevant information of UE, do not need to know the information such as data service type of transmission yet, if under the CoMP technology, set up the X2 data transmission channel that traditional RAB level connects, transinformation when meeting increase passage is set up increases the complexity that data transmission channel is set up.
Summary of the invention
The embodiment of the invention provides method, system and the equipment of setting up data transmission channel and transfer of data under a kind of CoMP, the connection of having avoided in the process based on the RAB level of setting up in data channel, reduce data channel and set up information transmitted amount in the process, helped data transmission procedure.
Set up the method for data transmission channel under a kind of CoMP, described method comprises:
The service evolution base station eNB sends the cooperative multipoint transmission request to collaborative eNB, comprises the required bandwidth information of transmission data in the described request;
Collaborative eNB sets up data transmission channel according to described bandwidth information, and described data transmission channel is used for carrying out data and/or information interaction between service eNB and collaborative eNB.
The method of the transfer of data under a kind of CoMP, described method comprises:
Service eNB sends the cooperative multipoint transmission request to collaborative eNB, comprises the required bandwidth information of transmission data in the described request;
Collaborative eNB sets up data transmission channel according to described bandwidth information, and the sign of described data transmission channel is returned to service eNB;
Service eNB is carried out transfer of data by the data transmission channel and the collaborative eNB of the sign correspondence of data transmission channel.
Set up the system of data transmission channel under a kind of CoMP, described system comprises an eNB and at least one the 2nd eNB, wherein:
The one eNB is used for sending the cooperative multipoint transmission request to the 2nd eNB, comprises the required bandwidth information of transmission data in the described request;
The 2nd eNB is used for setting up data transmission channel according to the bandwidth information of the cooperative multipoint transmission request that receives, and described data transmission channel is used for carrying out data and/or information interaction between an eNB and the 2nd eNB.
Data transmission system under a kind of CoMP, described system comprise an eNB and at least one the 2nd eNB, wherein:
The one eNB, be used for sending the cooperative multipoint transmission request to the 2nd eNB, comprise transmission data required bandwidth information in the described request, and the data transmission channel and the 2nd eNB of the sign correspondence of the data transmission channel that returns by the 2nd eNB carry out transfer of data;
The 2nd eNB is used for setting up data transmission channel according to the bandwidth information of the cooperative multipoint transmission request that receives, and the sign of described data transmission channel is returned to an eNB.
A kind of evolution base station, described evolution base station comprises:
The cooperation request sending module, be used for sending the first cooperative multipoint transmission request to an eNB, comprise the first required bandwidth information of transmission data in the described first cooperative multipoint transmission request, indicate an eNB to set up first data transmission channel according to described first bandwidth information.
Required bandwidth information sent to collaborative eNB when the present invention will be transmitted data by service eNB, set up data transmission channel by collaborative eNB according to described bandwidth information and carry data and the information of transmitting between service eNB and collaborative eNB, owing to be to set up at the data channel that eNB carries out, avoided connection based on the RAB level, reduce data channel and set up information transmitted amount in the process, reduce the complexity of data transmission channel, helped follow-up data transmission procedure.
Description of drawings
Fig. 1 is for setting up the method flow schematic diagram of data transmission channel under the CoMP in the embodiment of the invention one;
Fig. 2 is the method flow schematic diagram of the transfer of data under the CoMP in the embodiment of the invention two;
Fig. 3 is the downlink transmission data schematic flow sheet of CoMP in the embodiment of the invention three;
Fig. 4 is the up joint transmission data flow of a CoMP schematic diagram in the embodiment of the invention four;
Fig. 5 is for setting up the system configuration schematic diagram of data transmission channel under the CoMP in the embodiment of the invention five;
Fig. 6 is a data transmission system structural representation under the CoMP in the embodiment of the invention six;
Fig. 7 is an evolution base station structural representation in the embodiment of the invention seven.
Embodiment
The embodiment of the invention has proposed a kind of based on the method for setting up data transmission channel and transfer of data under the CoMP, because setting up in the process of the data transmission channel between service eNB and collaborative eNB, set up and the incoherent X2 user plane of UE passage, promptly the X2 user plane passage of Jian Liing is not based on the connection of RAB level and be based on other connection of eNB level, make the foundation of data transmission channel easier, help in the data transmission channel of setting up, carrying out data transmission procedure.
In various embodiments of the present invention, service eNB (Serving eNB) is meant the eNB that UE belonged to that carries out the CoMP business, and collaborative eNB (Cooperating eNB) is meant the eNB that carries out CoMP transmission/reception data when professional for the UE that belongs to service eNB.
Below in conjunction with Figure of description the embodiment of the invention is described in detail.
As shown in Figure 1, for setting up the method for data transmission channel under the CoMP business in the embodiment of the invention one, may further comprise the steps:
Step 101: service eNB sends the cooperative multipoint transmission request to collaborative eNB.
The UE that belongs to service eNB need carry out CoMP when professional, and service eNB is at first determined at least one eNB as collaborative eNB from adjacent eNB.Particularly, can select the adjacent eNB conduct collaborative eNB of service bearer amount less than set point.
The cooperative multipoint transmission request that service eNB sends can be transmitted by X2 interface, comprising but required bandwidth information when being not limited between service eNB and collaborative eNB the transmission data, can support that promptly all UE carry out the CoMP transfer bandwidth in the whole service eNB, service eNB can be according to the size at least a definite broadband in the following information:
Belong to service eNB and need carry out CoMP UE quantity, belong to service eNB and need carry out type of service and the traffic carrying capacity of each UE of CoMP, wherein, the type of service of UE and traffic carrying capacity are the information on loads of UE, also are not limited to other information on load in the present embodiment one.
In present embodiment one, the bandwidth information that service eNB sends by the cooperative multipoint transmission request can be the quantity of the bandwidth determined, also can be that predefined classification condition is carried out classification with band data, with the grade of the amount of bandwidth correspondence determined as the bandwidth information that sends.
Step 102: collaborative eNB sets up data transmission channel according to the bandwidth information that receives.
If the bandwidth information that sends in the step 101 is the quantity of the bandwidth determined, then in this step, collaborative eNB directly utilizes the bandwidth information that receives to set up data transmission channel; If the bandwidth information that sends in the step 101 is the grade of the amount of bandwidth correspondence determined, then in this step, collaborative eNB determines the amount of bandwidth of the grade correspondence that receives according to predefined classification condition, and then sets up data transmission channel.
Collaborative eNB is that data transmission channel is reserved corresponding resource according to the bandwidth information that receives, and reserved resource is not less than definite amount of bandwidth, and the data transmission channel of foundation can be used for carrying out between service eNB and collaborative eNB the mutual of data and/or information.
By the scheme of step 101 and step 102, set up the relevant data transmission channel of non-UE, the data transmission channel of foundation can be used for realizing data and information interaction between eNB in the CoMP business.
After step 102, collaborative eNB can return to service eNB with the sign of described data transmission channel, in order to follow-up data transmission procedure.
Further, service eNB can also send to collaborative eNB at any time and stop the cooperative multipoint transmission request, and collaborative eNB receives when stopping the cooperative multipoint transmission request, discharges the data transmission channel of setting up.
As shown in Figure 2, the method for the transfer of data under the CoMP in the embodiment of the invention two said method comprising the steps of:
Step 201: service eNB sends the cooperative multipoint transmission request to collaborative eNB, comprises the required bandwidth information of transmission data in the described request.
Step 202: collaborative eNB sets up data transmission channel according to described bandwidth information, and the sign of described data transmission channel is returned to service eNB.
Step 203: service eNB is carried out transfer of data by the data transmission channel and the collaborative eNB of the sign correspondence of data transmission channel.
The embodiment of the invention two is the basic enterprising stepping line data transmission courses at the data transmission channel of embodiment one foundation, carry out descending CoMP with service eNB by collaborative eNB respectively below and up CoMP is an example, the scheme of the embodiment of the invention two is described in detail.
As shown in Figure 3, in the embodiment of the invention three, the descending schematic diagram of service eNB to UE transmission data, suppose that present embodiment three is the downlink data transmission processes of carrying out, and specifically may further comprise the steps under the JP mode:
Step 301: service eNB sends down collaboration multicast communication request to collaborative eNB, has comprised sign, the required bandwidth information and the cell identification list of transmission data of service eNB in the described request.
Because what carry out in the present embodiment is descending CoMP business, therefore, the cooperative multipoint transmission request that is sent by service eNB among the embodiment two is down collaboration multicast communication request in present embodiment three.
The sign of the service eNB that comprises in the down collaboration multicast communication request is used to notify collaborative eNB: set up data transmission channel between service eNB that should be corresponding with sign; The cell ID corresponding district that comprises is the cooperation district that cooperative multipoint transmission is carried out in the service eNB request, be used to notify collaborative eNB: service eNB wishes to be used to carry out the cooperation district of down collaboration multicast communication, the cooperation district of the cell ID correspondence here can be to belong to same collaborative eNB, also can belong to different collaborative eNB.
Step 302: collaborative eNB is according to the sign of bandwidth information and service eNB, the data transmission channel between foundation and service eNB.
In descending CoMP, what carry out between service eNB and collaborative eNB is one-way transmission, and therefore, the data transmission channel of foundation can be used for follow-up: service eNB is transmitted the descending relevant information and the passage of data to collaborative eNB.
Step 303: collaborative eNB selects at least one cell ID from the cell identification list that receives.
The cell ID corresponding district that collaborative eNB selects is the cooperation district that belongs to this collaborative eNB and can be used in the down collaboration multicast communication.
May comprise a plurality of sub-districts corresponding district sign that belongs to this collaborative eNB in the cell identification list that collaborative eNB receives, cooperation district is according to the situation of self load, therefrom select one or more cell IDs, follow-up collaborative eNB can send data to UE according to the cooperation district of the cell ID correspondence of selecting.
The execution sequence of step 302 and step 303 can not fixed, and for example: collaborative eNB can select at least one cell ID earlier from cell identification list, set up data transmission channel again.
To step 303, the data transmission channel of having finished in descending CoMP business is set up process by step 301, can carry out descending CoMP business by the data transmission channel of setting up between follow-up service eNB and the collaborative eNB.
Step 304: collaborative eNB returns to service eNB with the sign of the data transmission channel of foundation and at least one cell ID of selection by down collaboration multicast communication response message.
Particularly, down collaboration multicast communication response message returns to service eNB by X2 interface.
Collaborative eNB also returns the sign of service eNB and the sign of collaborative eNB by down collaboration multicast communication response message to service eNB simultaneously.
Because in step 303, collaborative eNB may only select to belong in the cell identification list part cell ID of collaborative eNB, therefore, in step 304, collaborative eNB can also return following information to service eNB by down collaboration multicast communication response message: belong to described collaborative eNB but can not be used for the cell ID of the cooperation district of cooperative multipoint transmission, and the reason that can not transmit, as: the load of collaborative eNB is bigger, and the service that can provide for the UE in the service eNB is limited.
In this step, collaborative eNB returns to service eNB by down collaboration multicast communication response message with the sign of data transmission channel, the relevant information of the data transmission channel when being used for notification service eNB and carrying out descending CoMP.Also be not limited to the relevant information of the data transmission channel of other mode notification service eNB when carrying out descending CoMP in the present embodiment three.
Step 305: service eNB is by the sign specified data transmission channel according to the data transmission channel that receives.
After service eNB receives the down collaboration multicast communication response message that collaborative eNB returns, determine can be used in the data transmission channel of descending CoMP according to the sign of the sign of wherein data transmission channel and collaborative eNB; Can determine according at least one cell ID wherein which sub-district can be used as the cooperation district in the descending CoMP business under the collaborative eNB.
Step 306: service eNB sends down dispatch information, downlink data and each downlink data corresponding district sign by the established data transmission channel to collaborative eNB.
In descending CoMP business, service eNB need notify schedule information and each part downlink data of working in coordination with eNB data to be issued, issuing in the process by which cooperation district to send respectively by data transmission channel.
Step 307: collaborative eNB determines to send the cooperation district of downlink data according to each downlink data corresponding district sign.
Step 308: collaborative eNB indication cooperation district sends to UE according to down dispatch information with corresponding downlink data.
In present embodiment three, owing to have a plurality of cooperation districts under a collaborative eNB, the data transmission channel that the shared collaborative eNB of these cooperation districts sets up receives the downlink data that service eNB sends, therefore, service eNB need be in the sign of the cooperation district that carries this downlink data of transmission in the downlink data of transmission.
Each part downlink data need use its corresponding cooperation district to send to UE, just uses eNB for the antenna for base station of this cooperation district configuration sends to UE by air interface with corresponding downlink data, finishes the downlink data transmission process of CoMP.
Step 309: service eNB sends to collaborative eNB and stops the cooperative multipoint transmission request.
Service eNB can at any time determine whether also need to carry out the CoMP transmission, if when determining not need to carry out the Comp transmission, to send to collaborative eNB and stop the cooperative multipoint transmission request, can stop the cooperative multipoint transmission request here is DOWNLINK JOINT PROCESS DEACTIVE message, by the collaborative eNB of sign notice of the service eNB of carrying in the message: discharge and service eNB between about the data transmission channel of CoMP.
Step 310: collaborative eNB receives when stopping the cooperative multipoint transmission request, discharge to set up and service eNB between data transmission channel.
It can be logical links and the physical link that discharges data transmission channel that collaborative eNB discharges data transmission channel, is released to this data channel reserved resource.
By the scheme of step 301, finished the downlink data transmission process of a JP mode to step 310.
In present embodiment three, service eNB and collaborative eNB are by the cooperation district that can be identified for cooperative multipoint transmission alternately of step 301 and step 303.Present embodiment three also is not limited to the cooperation district that other modes are identified for cooperative multipoint transmission.For example: service eNB sends down collaboration multicast communication request to collaborative eNB, has comprised the sign and the required bandwidth information of transmission data of service eNB in the request; Collaborative eNB returns down collaboration multicast communication response message to service eNB, the sign and the cell ID that comprise the data transmission channel of collaborative eNB foundation in the response message, described cell ID corresponding district is the cooperation district that belongs to collaborative eNB and can be used in cooperative multipoint transmission, that is to say, initiatively determine can be used in the cooperation district of cooperative multipoint transmission by collaborative eNB, and the cell ID of the cooperation district determined is returned to service eNB.
As shown in Figure 4, for UE in the embodiment of the invention four to the schematic diagram of service eNB uplink transmission data, promptly up CoMP associating receiving course, a plurality of acceptance points (being a plurality of cooperation districts) receive the upstream data of the up transmission of UE simultaneously, specifically may further comprise the steps:
Step 401: service eNB sends uplink coordinated multicast communication request to collaborative eNB, has comprised the sign of service eNB, the sign of required bandwidth information, cell identification list and the data transmission channel of transmission data in the described request.
Because what carry out in the present embodiment is up CoMP business, therefore, the cooperative multipoint transmission request that is sent by service eNB among the embodiment two is uplink coordinated multicast communication request in present embodiment four.
The cell ID corresponding district here is the cooperation district that cooperative multipoint transmission is carried out in the service eNB request.
Because among the up CoMP of present embodiment, need to carry out transmitted in both directions between service eNB and collaborative eNB, be that service eNB need send uplink scheduling information to collaborative eNB, and collaborative eNB need return upstream data from UE to service eNB, therefore, service eNB can be carried data transmission channel in uplink coordinated multicast communication request sign, expression requesting cooperative eNB sets up the data transmission channel of a transmitted in both directions.
Step 402: collaborative eNB is according to the sign of bandwidth information and service eNB, the data transmission channel between foundation and service eNB.
Step 403: collaborative eNB selects at least one cell ID from the cell identification list that receives.
The cell ID corresponding district that collaborative eNB selects is the cooperation district that belongs to this collaborative eNB and can be used in uplink coordinated multicast communication.
Step 404: collaborative eNB returns to service eNB with the sign of the data transmission channel of foundation and at least one cell ID of selection by uplink coordinated multicast communication response message.
After collaborative eNB returned to service eNB with the sign of the data transmission channel set up, the bidirectional data transfers passage just can transmit data and information between service eNB and collaborative eNB.
With step 304 similarly, collaborative eNB can also return following information to service eNB by uplink coordinated multicast communication response message: belong to described collaborative eNB but can not be used for the cell ID of the cooperation district of cooperative multipoint transmission, and the reason that can not transmit.
Step 405: the data transmission channel sign corresponding data transmission channel of service eNB by receiving sends uplink scheduling information to collaborative eNB.
Uplink scheduling information includes but not limited to one or more in the following information: resource location information, modulating-coding (Modulation and Coding Scheme, MCS) format information and transmission of uplink data temporal information.
Step 406: collaborative eNB is according to the uplink scheduling information that receives, and the indication cooperation district receives the upstream data of UE transmission.
In this step, the cooperation district that is used for receiving the upstream data of UE transmission is the cooperation district of at least one cell ID correspondence of selecting of step 404.
The upstream data that the indication cooperation district receives the UE transmission can be regarded as: use eNB to receive the upstream data that UE sends as the antenna for base station of cooperation district configuration by air interface, finish the transmitting uplink data process of CoMP.
Step 407: the upstream data that collaborative eNB receives cooperation district and the cell ID binding back of this cooperation district send to service eNB by data transmission channel.
Send to service eNB after the cell ID binding of collaborative eNB with upstream data and this cooperation district for notification service eNB: the each several part upstream data by which cooperation district receives respectively.
Step 408: the upstream data from collaborative eNB that service eNB will receive merges, and finishes up CoMP associating receiving course.
Step 409: service eNB sends to collaborative eNB and stops the cooperative multipoint transmission request.
Step 410: collaborative eNB receives when stopping the cooperative multipoint transmission request, discharge to set up and service eNB between data transmission channel.
By the scheme of step 401, finished once up CoMP data transmission procedure to step 410.
Similar with embodiment three, present embodiment four also is not limited to the cooperation district that other modes are identified for cooperative multipoint transmission.For example: service eNB sends uplink coordinated multicast communication request to collaborative eNB, has comprised sign, the required bandwidth information of transmission data and the sign of data transmission channel of service eNB in the request; Collaborative eNB returns uplink coordinated multicast communication response message to service eNB, comprises the sign and the cell ID of data transmission channel in the response message, and described cell ID corresponding district is the cooperation district that belongs to collaborative eNB and can be used in cooperative multipoint transmission.
The embodiment of the invention three and embodiment four can regard as by two parts flow process and form, first's flow process is to set up data transmission channel between service eNB and collaborative eNB (data transmission channel of setting up in the descending CoMP process can be a half-duplex channel, the data transmission channel of setting up in the up CoMP process is a duplex channel), the second portion flow process is data transmission channel transmission data and/or the information by setting up between service eNB and the collaborative eNB, because setting up in the process of data transmission channel only at service eNB and collaborative eNB, information transmitted also all is the information of physical layer, so service eNB and collaborative eNB can both directly resolve the information that receives; Because no longer relate to the information of the RAB level of UE, therefore, it is little that passage is set up process information transmitted amount, be easy to realize, help the follow-up data transmission channel of setting up that utilizes again and carry out descending CoMP business
The embodiment of the invention five also provides the system that sets up data transmission channel under a kind of CoMP, as shown in Figure 5, described system comprises eNB 11 and at least one the 2nd eNB 12, wherein: an eNB11 is used for sending the cooperative multipoint transmission request to the 2nd eNB12, comprises the required bandwidth information of transmission data in the described request; The 2nd eNB12 is used for setting up data transmission channel according to the bandwidth information of the cooperative multipoint transmission request that receives, and described data transmission channel can be used for carrying out data and/or information interaction between an eNB and the 2nd eNB.
Further, described the 2nd eNB also is used for the sign of described data transmission channel is returned to an eNB.
In the system of present embodiment, an eNB can require to stop to carry out the CoMP business at any time, and therefore, an eNB11 can also be used for to the 2nd eNB12 transmission stopping cooperative multipoint transmission request; The 2nd eNB12 can also be used to receive when stopping the cooperative multipoint transmission request, discharges the data transmission channel of setting up.
The embodiment of the invention six also provides data transmission system under a kind of CoMP, its structural representation as shown in Figure 6, described system comprises an eNB21 and at least one the 2nd eNB22, wherein: an eNB21 is used for sending the cooperative multipoint transmission request to the 2nd eNB22, comprise the required bandwidth information of transmission data in the described request, and the data transmission channel and the 2nd eNB22 of the sign correspondence of the data transmission channel that returns by the 2nd eNB22 carry out transfer of data; The 2nd eNB22 is used for setting up data transmission channel according to the bandwidth information of the cooperative multipoint transmission request that receives, and the sign of described data transmission channel is returned to an eNB21.
Further, need be identified for the cooperation district of cooperative multipoint transmission, two kinds of definite modes are arranged in the native system, a kind of mode is that an eNB21 and the 2nd eNB22 consult to determine cooperation district: an eNB21 also is used for sending cell ID by the cooperative multipoint transmission request to the 2nd eNB22, and described cell ID corresponding district is the cooperation district that cooperative multipoint transmission is carried out in eNB21 request; The 2nd eNB22 also is used for selecting part or all of cell ID from the cell ID that receives, and the cell ID of selecting returned to an eNB21, wherein: the cell ID corresponding district that the 2nd eNB22 selects is the cooperation district that belongs to the 2nd eNB22 and can be used in cooperative multipoint transmission.Another kind of mode is initiatively to determine cooperation district by the 2nd eNB: the 2nd eNB22 also is used for returning cell ID to an eNB21, and described cell ID corresponding district is the cooperation district that belongs to the 2nd eNB22 and can be used in cooperative multipoint transmission.
The mode of utilizing native system to carry out the CoMP downlink transfer is: when described cooperative multipoint transmission request is down collaboration multicast communication request, the one eNB21 is used for by data transmission channel, sends down dispatch information, downlink data and each downlink data corresponding district sign to the 2nd eNB22; The 2nd eNB22 is used for determining to send the cooperation district of downlink data according to each downlink data corresponding district sign, and according to down dispatch information indication cooperation district corresponding downlink data is sent to UE23 in the system.
The mode of utilizing native system to carry out the up joint transmission of CoMP is: when described cooperative multipoint transmission request was uplink coordinated multicast communication request, an eNB21 can be used for sending uplink scheduling information by data transmission channel to the 2nd eNB22; The 2nd eNB22 is used for according to the uplink scheduling information that receives, the indication cooperation district receives the upstream data of UE23 transmission, and, send to an eNB21 by data transmission channel with after cooperation district upstream data that receives and the cell ID binding that receives the upstream data cooperation district.
ENB in the present embodiment five, six can be the service eNB among embodiment one, two, three and four, and the 2nd eNB can be collaborative eNB, and other concrete function operations of an eNB and the 2nd eNB see also embodiment one, two, three and four.
The embodiment of the invention seven also provides a kind of evolution base station, and as shown in Figure 7, described evolution base station comprises cooperation request sending module 31, cooperates and ask receiver module 32 and transmission channel to set up module 33.Evolution base station in present embodiment seven can be used as service eNB, also can be used as collaborative eNB, and therefore, the part of module in the evolution base station is the functional module as service eNB, and part of module is as the functional module of the eNB of system, is illustrated respectively below:
Cooperation request sending module 31 is used for sending the first cooperative multipoint transmission request to an eNB, comprise the first required bandwidth information of transmission data in the described first cooperative multipoint transmission request, can indicate an eNB to set up first data transmission channel according to described first bandwidth information, first data transmission channel of Jian Liing can be used for two data and/or information mutual between eNB here.Cooperation request sending module 31 can be the functional module of using during as service eNB.
Cooperation request receiver module 32 is used to receive the second cooperative multipoint transmission request that the 2nd eNB sends, and the described second cooperative multipoint transmission request comprises the second required bandwidth information of transmission data; Transmission channel is set up module 33 and is used for setting up second data transmission channel according to second bandwidth information, and second data transmission channel of Jian Liing can be used for two data and/or information mutual between eNB here.It can be the functional module of using during as collaborative eNB that cooperation request receiver module 32 and transmission channel are set up module 33.
ENB in the present embodiment seven can be identical eNB with the 2nd eNB, also can be eNB inequality.
Described evolution base station also comprises sign transport module 34, is used to receive the sign of first data transmission channel that an eNB returns, and, the sign of second data transmission channel is returned to the 2nd eNB.Sign transport module 34 can be the functional module of using during as service eNB, also can be the functional module of using during as collaborative eNB.
Further, when evolution base station carries out descending CoMP transmission as service eNB, data transmission module 35 in the evolution base station is used for by first data transmission channel, sends down dispatch information, downlink data and each downlink data corresponding district sign to an eNB.
When evolution base station carries out descending CoMP transmission as collaborative eNB, descending sending module 36 in the evolution base station can be used for identifying by down dispatch information, downlink data and each downlink data corresponding district that second data transmission channel receives from the 2nd eNB, determine to send the cooperation district of downlink data, and corresponding downlink data is sent to UE according to the down dispatch information indication cooperation district that receives.
When evolution base station carries out up CoMP joint transmission as service eNB, described data transmission module 35 is used for sending uplink scheduling information by first data transmission channel to an eNB, and receives the upstream data that an eNB returns by first data transmission channel.
When evolution base station carries out up CoMP joint transmission as collaborative eNB, evolution base station also comprises up receiver module 37, be used for by the uplink scheduling information of second data transmission channel reception from the 2nd eNB, and receive the upstream data of UE transmission according to the uplink scheduling information that receives indication cooperation district, after cooperation district upstream data that receives and the cell ID binding that receives the upstream data cooperation district, send to the 2nd eNB by second data transmission channel.
Record is the major function of evolution base station in the present embodiment seven, and other functions of the module in the evolution base station see also embodiment one, two, three and four.
The method, system and the equipment that provide by the embodiment of the invention, adopted physical layer transmission in the process setting up of data channel, collaborative eNB and service eNB can both correctly be resolved the information of receiving, owing to avoided connection based on the RAB level, reduce data channel and set up information transmitted amount in the process, reduce the complexity of data transmission channel, helped the transfer of data under the CoMP; The data transmission channel of setting up between service eNB and collaborative eNB be according to transmission during data required bandwidth information determine, guaranteed that bandwidth that data transmission channel is reserved can satisfy the CoMP transfer of data of UE; By two kinds of schemes that are identified for the cooperation district of cooperative multipoint transmission that the embodiment of the invention provides, can when satisfying the CoMP transmission, guarantee that the load of collaborative eNB can be not excessive; Further, in the embodiment of the invention, service eNB is passed through the data transmission channel of collaborative eNB foundation when collaborative eNB sends downlink data, issued each downlink data corresponding district sign simultaneously, make when a plurality of cooperation districts that belong to same collaborative eNb pass through the data transmission channel downlink data receiving, can correctly receive the downlink data that self should transmit.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (22)
- 0. set up the method for data transmission channel under the cooperative multipoint transmission CoMP, it is characterized in that described method comprises:The service evolution base station eNB sends the cooperative multipoint transmission request to collaborative eNB, comprises the required bandwidth information of transmission data in the described request;Collaborative eNB sets up data transmission channel according to described bandwidth information, and described data transmission channel is used for carrying out data and/or information interaction between service eNB and collaborative eNB.
- 2. the method for claim 1 is characterized in that, described method also comprises:Collaborative eNB returns to service eNB with the sign of described data transmission channel.
- 3. the method for claim 1 is characterized in that, to be service eNB determine according in the following information one or more transmission data required bandwidth information:Belong to service eNB and need carry out CoMP UE quantity, belong to service eNB and need carry out type of service and the traffic carrying capacity of each UE of CoMP.
- 4. as the arbitrary described method of claim 1～3, it is characterized in that described method also comprises:Service eNB sends to collaborative eNB and stops the cooperative multipoint transmission request;Collaborative eNB receives when stopping the cooperative multipoint transmission request, discharges the data transmission channel of setting up.
- 5. the method for the transfer of data under the CoMP is characterized in that described method comprises:Service eNB sends the cooperative multipoint transmission request to collaborative eNB, comprises the required bandwidth information of transmission data in the described request;Collaborative eNB sets up data transmission channel according to described bandwidth information, and the sign of described data transmission channel is returned to service eNB;Service eNB is carried out transfer of data by the data transmission channel and the collaborative eNB of the sign correspondence of data transmission channel.
- 6. method as claimed in claim 5 is characterized in that,Also comprise cell ID in the cooperative multipoint transmission request that service eNB sends, described cell ID corresponding district is the cooperation district that cooperative multipoint transmission is carried out in the service eNB request; ThenCollaborative eNB sets up after the data transmission channel, and service eNB is undertaken before the transfer of data by data transmission channel and collaborative eNB, and described method also comprises:Collaborative eNB selects part or all of cell ID from the cell ID that receives, and the cell ID of selecting returned to service eNB, the cell ID corresponding district that collaborative eNB selects is the cooperation district that belongs to collaborative eNB and can be used in cooperative multipoint transmission.
- 7. method as claimed in claim 5 is characterized in that collaborative eNB sets up after the data transmission channel, and service eNB is undertaken before the transfer of data by data transmission channel and collaborative eNB, and described method also comprises:Collaborative eNB returns cell ID to service eNB, and described cell ID corresponding district is the cooperation district that belongs to collaborative eNB and can be used in cooperative multipoint transmission.
- 8. as claim 6 or 7 described methods, it is characterized in that if described cooperative multipoint transmission request is down collaboration multicast communication request, then service eNB is carried out transfer of data by data transmission channel and collaborative eNB, comprising:Service eNB sends down dispatch information, downlink data and each downlink data corresponding district sign by data transmission channel to collaborative eNB;Collaborative eNB determines to send the cooperation district of downlink data according to each downlink data corresponding district sign, and according to down dispatch information indication cooperation district corresponding downlink data is sent to UE.
- 9. as claim 6 or 7 described methods, it is characterized in that if described cooperative multipoint transmission request is uplink coordinated multicast communication request, then service eNB is carried out transfer of data by data transmission channel and collaborative eNB, comprising:Service eNB sends uplink scheduling information by data transmission channel to collaborative eNB;Collaborative eNB is according to the uplink scheduling information that receives, and the indication cooperation district receives the upstream data of UE transmission;After upstream data that collaborative eNB receives cooperation district and the cell ID binding that receives the upstream data cooperation district, send to service eNB by data transmission channel.
- 10. set up the system of data transmission channel under the CoMP, it is characterized in that, described system comprises an eNB and at least one the 2nd eNB, wherein:The one eNB is used for sending the cooperative multipoint transmission request to the 2nd eNB, comprises the required bandwidth information of transmission data in the described request;The 2nd eNB is used for setting up data transmission channel according to the bandwidth information of the cooperative multipoint transmission request that receives, and described data transmission channel is used for carrying out data and/or information interaction between an eNB and the 2nd eNB.
- 11. system as claimed in claim 10 is characterized in that,Described the 2nd eNB also is used for the sign of described data transmission channel is returned to an eNB.
- 12. as claim 10 or 11 described systems, it is characterized in that,A described eNB also is used for to the 2nd eNB transmission stopping cooperative multipoint transmission request;Described the 2nd eNB also is used to receive when stopping the cooperative multipoint transmission request, discharges the data transmission channel of setting up.
- 13. data transmission system under the CoMP is characterized in that, described system comprises an eNB and at least one the 2nd eNB, wherein:The one eNB, be used for sending the cooperative multipoint transmission request to the 2nd eNB, comprise transmission data required bandwidth information in the described request, and the data transmission channel and the 2nd eNB of the sign correspondence of the data transmission channel that returns by the 2nd eNB carry out transfer of data;The 2nd eNB is used for setting up data transmission channel according to the bandwidth information of the cooperative multipoint transmission request that receives, and the sign of described data transmission channel is returned to an eNB.
- 14. system as claimed in claim 13 is characterized in that,A described eNB also is used for sending cell ID by the cooperative multipoint transmission request to the 2nd eNB, and described cell ID corresponding district is the cooperation district that cooperative multipoint transmission is carried out in eNB request;Described the 2nd eNB, also be used for selecting part or all of cell ID from the cell ID that receives, and the cell ID of selecting returned to an eNB, wherein: the cell ID corresponding district that the 2nd eNB selects is the cooperation district that belongs to the 2nd eNB and can be used in cooperative multipoint transmission.
- 15. system as claimed in claim 13 is characterized in that,Described the 2nd eNB also is used for returning cell ID to an eNB, and described cell ID corresponding district is the cooperation district that belongs to the 2nd eNB and can be used in cooperative multipoint transmission.
- 16. as claim 14 or 15 described systems, it is characterized in that,A described eNB also is used for when described cooperative multipoint transmission request is down collaboration multicast communication request, by data transmission channel, sends down dispatch information, downlink data and each downlink data corresponding district sign to the 2nd eNB;Described the 2nd eNB also is used for determining to send the cooperation district of downlink data according to each downlink data corresponding district sign, and according to down dispatch information indication cooperation district corresponding downlink data is sent to UE.
- 17. as claim 14 or 15 described systems, it is characterized in that,A described eNB also is used for sending uplink scheduling information by data transmission channel to the 2nd eNB when described cooperative multipoint transmission request is uplink coordinated multicast communication request;Described the 2nd eNB, also be used for according to the uplink scheduling information that receives, the indication cooperation district receives the upstream data of UE transmission, and with after cooperation district upstream data that receives and the cell ID binding that receives the upstream data cooperation district, sends to an eNB by data transmission channel.
- 18. an evolution base station is characterized in that, described evolution base station comprises:The cooperation request sending module, be used for sending the first cooperative multipoint transmission request to an eNB, comprise the first required bandwidth information of transmission data in the described first cooperative multipoint transmission request, indicate an eNB to set up first data transmission channel according to described first bandwidth information.
- 19. evolution base station as claimed in claim 18 is characterized in that, described evolution base station also comprises:Cooperation request receiver module is used to receive the second cooperative multipoint transmission request that the 2nd eNB sends, and the described second cooperative multipoint transmission request comprises the second required bandwidth information of transmission data;Transmission channel is set up module, is used for setting up second data transmission channel according to second bandwidth information.
- 20. evolution base station as claimed in claim 19 is characterized in that, described evolution base station also comprises:The sign transport module is used to receive the sign of first data transmission channel that an eNB returns, and, the sign of second data transmission channel is returned to the 2nd eNB.
- 21. evolution base station as claimed in claim 20 is characterized in that, described evolution base station also comprises:Data transmission module is used for by first data transmission channel, sends down dispatch information, downlink data and each downlink data corresponding district sign to an eNB;Descending sending module, be used for identifying by down dispatch information, downlink data and each downlink data corresponding district that second data transmission channel receives from the 2nd eNB, determine to send the cooperation district of downlink data, and corresponding downlink data is sent to UE according to the down dispatch information indication cooperation district that receives.
- 22. evolution base station as claimed in claim 21 is characterized in that,Described data transmission module also is used for sending uplink scheduling information by first data transmission channel to an eNB, and receives the upstream data that an eNB returns by first data transmission channel;Described evolution base station also comprises:Up receiver module, be used for by the uplink scheduling information of second data transmission channel reception from the 2nd eNB, and receive the upstream data of UE transmission according to the uplink scheduling information that receives indication cooperation district, after cooperation district upstream data that receives and the cell ID binding that receives the upstream data cooperation district, send to the 2nd eNB by second data transmission channel.
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