CN102378181B - A kind of method and system of data exchange in coordinated multi-point communication technology - Google Patents
A kind of method and system of data exchange in coordinated multi-point communication technology Download PDFInfo
- Publication number
- CN102378181B CN102378181B CN201010252877.1A CN201010252877A CN102378181B CN 102378181 B CN102378181 B CN 102378181B CN 201010252877 A CN201010252877 A CN 201010252877A CN 102378181 B CN102378181 B CN 102378181B
- Authority
- CN
- China
- Prior art keywords
- base station
- cell base
- auxiliary
- service data
- request message
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004891 communication Methods 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 230000003993 interaction Effects 0.000 claims abstract description 85
- 230000005540 biological transmission Effects 0.000 claims description 36
- 230000004044 response Effects 0.000 claims description 31
- 238000012790 confirmation Methods 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- GVVPGTZRZFNKDS-JXMROGBWSA-N geranyl diphosphate Chemical compound CC(C)=CCC\C(C)=C\CO[P@](O)(=O)OP(O)(O)=O GVVPGTZRZFNKDS-JXMROGBWSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
- H04J11/0053—Interference mitigation or co-ordination of intercell interference using co-ordinated multipoint transmission/reception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses the method for data interaction in a kind of coordinate multipoint (CoMP) communication technology, comprise: when data interaction pattern is centralized distribution data mode, the business datum being handed down to subscriber equipment (UE) is sent to base station, host cell by core net, after base station, host cell receives business datum, the business datum received is sent to base station, assisted cell; Or when data interaction pattern is distributed distributing data mode, the business datum being handed down to UE is sent to base station, assisted cell by core net.The present invention discloses the system of data interaction in a kind of CoMP communication technology, adopt method and system of the present invention, the rational data interaction between base station and core net can be realized, promote Consumer's Experience.
Description
Technical Field
The present invention relates to a Coordinated Multi-Point (CoMP) communication technology, and in particular, to a method and a system for data interaction in a CoMP communication technology.
Background
Coordinated Multiple Point Transmission and reception (Coordinated multipoint Transmission and reception) is proposed to further improve the throughput of edge users, the frequency utilization of edge users, and the overall performance of the system in the Long Term Evolution (LTE) system, and becomes an important element in the technical framework of the Evolution (LTE-advanced) of the LTE system in the third Generation Partnership Project (3 GPP). The core idea of the technology is as follows: a schematic diagram of a method for simultaneously serving a user or a plurality of users through a plurality of transmission points with spatial position adjacency is shown in fig. 1.
Compared with the existing LTE network framework and design concept, the maximum change introduced by the coordinated multipoint transmission and reception technology is as follows: user Equipment (UE) will simultaneously perform data receiving and transmitting operations with multiple spatially adjacent cells. Therefore, in this case, it is important to coordinate the coordination between the multiple cells with separated locations and operating independently, and at this time, it is necessary to introduce a centralized management concept, that is: there is a primary cell and a secondary cell. The former is mainly responsible for the selection, state collection, analysis, scheduling assignment and other work of all the cells working cooperatively, and simultaneously carries out data interaction with users; and the latter is mainly responsible for the interaction of self state and data interaction with users and the like. As can be seen from the above description, the function of the primary cell is more complex, and the function of the secondary cell is simpler. And under certain conditions, the roles of the two can be interchanged. The same cell may simultaneously assume two different roles for different users.
However, at present, no technical solution for data interaction in CoMP communication technology exists.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method and a system for data interaction in CoMP communication technology, which can achieve reasonable data interaction between a base station and a core network when a UE is located at a cell edge and receives data sent from different base stations, thereby improving user experience.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of data interaction in CoMP communication techniques, the method comprising:
when the data interaction mode is a centralized data distribution mode, the core network sends service data issued to the UE to the main control cell base station, and the main control cell base station sends the received service data to the auxiliary cell base station after receiving the service data; or,
and when the data interaction mode is a distributed data distribution mode, the core network sends the service data issued to the UE to the auxiliary cell base station.
In the above scheme, the method specifically comprises:
when the data interaction mode is a centralized data distribution mode and the type of the service data sent to the UE by the core network is the type of the set service data, the core network sends the service data sent to the UE to the main control cell base station through an S1 interface, and the main control cell base station sends the received service data to the auxiliary cell base station through an X2 interface after receiving the service data; or,
and when the data interaction mode is a distributed data distribution mode and the type of the service data sent to the UE by the core network is the set type of the service data, the core network sends the service data sent to the UE to the auxiliary cell base station through an S1 interface.
In the above scheme, the method further comprises:
when the type of the service data sent to the UE by the core network is not the set type of the service data, the MME/S-GW sends the service data sent to the UE to the master control cell base station through an S1 interface; and after receiving the service data, the main control cell sends the received service data to the UE.
In the above solution, before the core network sends the service data delivered to the UE to the master cell base station, the method further includes:
starting up the UE and initializing;
the method comprises the steps that a main wireless link connection is established between UE and a main control cell base station, and then an auxiliary wireless link connection is established between the UE and an auxiliary cell base station;
the master cell base station sends an auxiliary radio access bearer (E-RAB) establishment request message to the auxiliary cell base station;
after receiving the request message, the auxiliary cell base station determines that enough wireless resources exist according to the current system load condition of the auxiliary cell base station, configures a wireless Link Control (RLC) layer wireless connection transmission mode of an air interface of the auxiliary cell base station according to the air interface transmission mode in the request message, and then sends an auxiliary E-RAB establishment response message to the main Control cell base station; or,
before the core network sends the service data issued to the UE to the secondary cell base station, the method further includes:
starting up the UE and initializing;
the method comprises the steps that a main wireless link connection is established between UE and a main control cell base station, and then an auxiliary wireless link connection is established between the UE and an auxiliary cell base station;
the master control cell base station sends an auxiliary E-RAB establishment request message to the auxiliary cell base station;
after receiving the request message, the auxiliary cell base station determines that enough wireless resources exist according to the current system load condition of the auxiliary cell base station, and then sends an E-RAB establishment request message to a core network, and simultaneously configures an RLC layer wireless connection transmission mode of an air interface of the auxiliary cell base station according to the air interface transmission mode in the request message;
after receiving the establishment request message, the core network returns an E-RAB establishment response message to the auxiliary cell base station;
and after receiving the establishment response message, the auxiliary cell base station sends an auxiliary E-RAB establishment response message to the main control cell base station.
In the above solution, the establishing of the auxiliary wireless link connection between the UE and the auxiliary cell base station specifically includes:
UE sends request information for establishing auxiliary wireless link connection to a master control cell base station;
after receiving the message, the master control cell base station sends a request message for establishing the auxiliary wireless link connection to the auxiliary cell base station;
after receiving the message, the auxiliary cell base station confirms that the service establishment with the UE can be accepted, and then sends an establishment confirmation message of the auxiliary wireless link connection to the main control cell base station;
and after receiving the message, the master control cell base station marks the auxiliary cell base station as the auxiliary cell base station, and then sends a confirmation message for establishing the auxiliary wireless link connection to the UE.
In the above scheme, the method further comprises:
and the auxiliary cell base station sends an auxiliary E-RAB establishment rejection message to the main control cell base station after determining that sufficient wireless resources do not exist according to the current system load condition of the auxiliary cell base station.
In the above scheme, the method further comprises:
and after receiving the service data, the auxiliary cell base station sends the received service data to the UE.
In the above scheme, the method further comprises:
when the established auxiliary wireless link connection is not needed, the main control cell base station sends a release request message of the auxiliary wireless link connection containing the auxiliary cell base station identification and the UE identification to the auxiliary cell base station, and simultaneously sends a release request message of the auxiliary wireless link connection containing the auxiliary cell base station identification to the UE;
after receiving the release request message, the UE and the auxiliary cell base station terminate the auxiliary wireless link connection between the UE and the auxiliary cell base station through information interaction;
and then, the auxiliary cell base station sends a release confirmation message of the auxiliary wireless link connection to the main cell base station.
The invention also provides a system for data interaction in CoMP communication technology, which comprises: the system comprises a core network, a master cell base station and an auxiliary cell base station;
the core network is used for sending the service data issued to the UE to the master control cell base station when the data interaction mode is a centralized data distribution mode; or when the data interaction mode is a distributed data distribution mode, sending the service data issued to the UE to the auxiliary cell base station;
the main control cell base station is used for sending the received service data to the auxiliary cell base station after receiving the service data sent by the core network;
the auxiliary cell base station is used for receiving the service data sent by the main control cell base station; or receiving service data sent by the core network.
In the foregoing scheme, the core network is specifically configured to:
when the data interaction mode is a centralized data distribution mode and the type of the service data issued to the UE is the set type of the service data, the service data issued to the UE is sent to the master cell base station through an S1 interface; or when the data interaction mode is a distributed data distribution mode and the type of the service data issued to the UE is the set type of the service data, the service data issued to the UE is sent to the auxiliary cell base station through the S1 interface;
the master cell base station is specifically configured to:
after receiving the service data sent by the core network, sending the received service data to the auxiliary cell base station through an X2 interface.
In the above scheme, the system further includes a UE configured to establish a primary radio link connection with a master cell base station after being started and initialized, and then establish an auxiliary radio link connection with an auxiliary cell base station;
the master cell base station is further configured to send an auxiliary E-RAB establishment request message to the auxiliary cell base station, and receive an auxiliary E-RAB establishment response message sent by the auxiliary cell base station;
the auxiliary cell base station is further configured to receive an auxiliary E-RAB establishment request message sent by the master cell base station when the data interaction mode is a centralized data distribution mode, configure an RLC layer wireless connection transmission mode of an air interface of the auxiliary cell base station according to the air interface transmission mode in the request message after determining that sufficient wireless resources exist according to a current system load condition of the auxiliary cell base station after receiving the request message, and send an auxiliary E-RAB establishment response message to the master cell base station; or, when the data interaction mode is a distributed data distribution mode, receiving an auxiliary E-RAB establishment request message sent by the master cell base station, after receiving the request message, determining that sufficient wireless resources exist according to the current system load condition of the master cell base station, sending the E-RAB establishment request message to the core network, meanwhile, configuring an RLC layer wireless connection transmission mode of an air interface of the master cell base station according to the air interface transmission mode in the request message, and after receiving an E-RAB establishment response message returned by the core network, sending an auxiliary E-RAB establishment response message to the master cell base station;
and the core network is also used for returning an E-RAB establishment response message to the auxiliary cell base station after receiving the E-RAB establishment request message sent by the auxiliary cell base station.
In the above solution, the core network is further configured to send the service data issued to the UE to the master cell base station through the S1 interface when the type of the service data sent to the UE is not the set type of the service data;
the master control cell base station is also used for sending the received service data to the UE after receiving the service data;
and the UE is also used for receiving the service data sent by the master cell base station.
In the above solution, the auxiliary cell base station is further configured to send an auxiliary E-RAB establishment rejection message to the master cell base station after determining that there is insufficient radio resources according to the current system load condition of the auxiliary cell base station;
and the master cell base station is also used for receiving an auxiliary E-RAB establishment rejection message sent by the auxiliary cell base station.
In the above solution, the master cell base station is further configured to send a release request message of an auxiliary wireless link connection including an identifier of an auxiliary cell base station and an identifier of a UE to the auxiliary cell base station when the established auxiliary wireless link connection is not needed, send a release request message of the auxiliary wireless link connection including the identifier of the auxiliary cell base station to the UE, and receive a release confirmation message of the auxiliary wireless link connection sent by the auxiliary cell base station;
the auxiliary cell base station is further configured to terminate the auxiliary wireless link connection between the auxiliary cell base station and the UE through information interaction with the UE after receiving the release request message sent by the master cell base station, and then send the release request message to the master cell base station;
and the UE is also used for terminating the auxiliary wireless link connection between the main cell base station and the auxiliary cell base station through information interaction with the auxiliary cell base station after receiving the release request message sent by the main cell base station.
In the above solution, the auxiliary cell base station is further configured to send the received service data to the UE;
the UE is further configured to receive service data sent by the secondary cell base station.
According to the method and the system for data interaction in the CoMP communication technology, when the data interaction mode is a centralized data distribution mode, a core network sends service data issued to UE to a main control cell base station, and the main control cell base station sends the received service data to an auxiliary cell base station after receiving the service data; or when the data interaction mode is a distributed data distribution mode, the core network sends the service data issued to the UE to the auxiliary cell base station, so that reasonable data interaction between the base station and the core network can be realized, the service data issued to the UE can reach the auxiliary cell base station through a reasonable way, and user experience is further improved.
In addition, the UE establishes a main wireless link connection with the main control cell base station and establishes an auxiliary wireless link connection with the auxiliary cell base station, the core network sends the service data issued to the UE to the main control cell base station or the auxiliary cell base station through an S1 interface, and the main control cell base station sends the received service data to the auxiliary cell base station through an X2 interface after receiving the service data.
Drawings
Fig. 1 is a network topology structure diagram of an LTE mobile communication system;
fig. 2 is a schematic flow chart illustrating a method for implementing data interaction in a CoMP communication technology according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a method for implementing data interaction in a CoMP communication technology according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a system structure for data interaction in CoMP communication technology according to the present invention.
Detailed Description
The basic idea of the invention is: when the data interaction mode is a centralized data distribution mode, the core network sends service data issued to the UE to the main control cell base station, and the main control cell base station sends the received service data to the auxiliary cell base station after receiving the service data; or, when the data interaction mode is a distributed data distribution mode, the core network sends the service data issued to the UE to the auxiliary cell base station.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a network topology structure diagram of an LTE mobile communication system, and as can be seen from fig. 1, a network of the LTE mobile communication system includes: a Core Network (CN) and an access network (E-UTRAN); the core network mainly includes a mobile management unit/serving gateway (MME/S-GW), the access network is composed of a plurality of evolved node bs (enbs), and the eNB is a node of a long term evolution system, that is: a base station; the MME/S-GW and the eNB are interconnected and intercommunicated through an S1 interface, and different eNBs in the access network are interconnected and intercommunicated through an X2 interface.
In the practical application process, when the data interaction mode is a centralized data distribution mode and the type of the service data issued by the MME/S-GW to the UE is the set type of the service data, the MME/S-GW can send the service data issued to the UE to the main control cell base station through the S1 interface, and after receiving the service data, the main control cell base station can send the received service data to the auxiliary cell base station through the X2 interface; or,
when the data interaction mode is a distributed data distribution mode and the type of the service data issued by the MME/S-GW to the UE is the set type of the service data, the MME/S-GW may send the service data issued to the UE to the auxiliary cell base station through the S1 interface.
The method of the present invention may further comprise:
when the type of the service data issued to the UE by the MME/S-GW is not the set type of the service data, the MME/S-GW sends the service data issued to the UE to the main control cell base station through an S1 interface; and after receiving the service data, the main control cell sends the received service data to the UE.
The first embodiment is as follows:
the application scenario of this embodiment is: the base station of the main control cell determines that the data interaction mode is a centralized data distribution mode, wherein the centralized data distribution mode is suitable for one Data Radio Bearer (DRB). As shown in fig. 2, the method for data interaction in CoMP communication technology of this embodiment includes the following steps:
step 201: the UE is powered on and initialized, and then step 202 is executed.
Step 202: establishing a main wireless link connection between the UE and the master cell base station, then establishing an auxiliary wireless link connection between the UE and the auxiliary cell base station, and then executing step 203;
here, a detailed description of the UE establishing a primary radio link connection with a master cell base station is specified in the 3GPP protocol; when the UE establishes a primary wireless connection link connection with the primary cell base station, the UE sends the type of the service data to be transmitted to the primary cell base station, and sends the type of the service data to be transmitted to the secondary cell base station and the MME/S-GW.
The method comprises the following steps that the UE establishes auxiliary wireless link connection with an auxiliary cell base station, and specifically comprises the following steps:
UE sends request information for establishing auxiliary wireless link connection to a master control cell base station;
after receiving the message, the master control cell base station sends a request message for establishing the auxiliary wireless link connection to the auxiliary cell base station;
after receiving the message, the auxiliary cell base station confirms that the service establishment with the UE can be accepted, and then sends an establishment confirmation message of the auxiliary wireless link connection to the main control cell base station;
after receiving the message, the master control cell base station marks the auxiliary cell base station as an auxiliary cell base station, and then sends a confirmation message for establishing the auxiliary wireless link connection to the UE;
the UE can automatically detect parameters and signal quality of the adjacent cells, and after the parameters and the signal quality of the adjacent cells are detected, the cell with better signal quality is selected as an auxiliary cell;
the request message for establishing the auxiliary wireless link connection comprises an auxiliary cell base station identifier, a UE identifier, a Quality of service (QoS) parameter for requesting service data, and a configuration parameter of a service channel; the auxiliary cell base station adopts the QoS parameter of the request service data to improve the service quality of the service data, and configures the corresponding service channel according to the configuration parameter of the service channel;
the auxiliary cell base station judges whether the service establishment with the UE can be accepted or not according to the current system load condition of the auxiliary cell base station;
and after receiving the establishment confirmation message, the UE indicates that the UE and the auxiliary cell base station establish the auxiliary wireless link connection.
Step 203: the master control cell base station sends an auxiliary E-RAB establishment request message to the auxiliary cell base station;
here, the supplementary E-RAB establishment request message includes: the method comprises the following steps of assisting an E-RAB identification, QoS parameters of the E-RAB, a general data transmission platform-terminal (GTP-TE) identification, an air interface transmission mode and a data interaction mode; the data interaction mode is a centralized data distribution mode, the auxiliary cell base station can know that the auxiliary cell base station is an auxiliary E-RAB through an auxiliary E-RAB identifier, the service quality of service data can be improved through the QoS parameter of the auxiliary E-RAB, the data transmission mode of the UE can be known through a GTP-TE identifier, and the fact that the service data sent to the UE by the MME/S-GW needs to be forwarded by the main control cell base station first can be known through the centralized data distribution mode;
determining a data interaction mode by a main control cell base station, and informing the determined data interaction mode to MME/S-GW and an auxiliary cell base station; when the data interaction mode is determined, the master cell base station can determine the data interaction mode according to the load condition of the master cell base station, specifically, if the load calculated by the master cell base station according to the algorithm of the master cell base station is serious, the data interaction mode is determined to be a distributed data distribution mode, and if the load calculated by the master cell base station according to the algorithm of the master cell base station can bear, the data interaction mode is determined to be a centralized data distribution mode; or, the main control cell base station may also determine according to a type of service data that the UE needs to transmit, and if the UE needs to transmit Guaranteed Bit Rate (GBR) service data, the main control cell base station determines that the data interaction mode is a distributed data distribution mode, and if the UE needs to transmit Non-Guaranteed Bit Rate (NGBR) service data, the main control cell base station determines that the data interaction mode is a centralized data distribution mode; in practical application, the base station of the master cell may select one of the two methods to determine the data interaction mode.
Step 204: after receiving the request message, the assisting cell base station determines that there is sufficient radio resource according to the current system load condition of the assisting cell base station, configures an RLC layer radio connection transmission mode of an air interface of the assisting cell base station according to the air interface transmission mode in the request message, and then executes step 205;
here, the air interface transmission modes include: a traffic channel and a control channel; the service channel comprises an uplink service channel and a downlink service channel;
the wireless connection transmission mode comprises: non-acknowledged (UM) mode and Acknowledged (AM) mode;
if the auxiliary cell base station determines that sufficient wireless resources do not exist according to the current system load condition of the auxiliary cell base station, an auxiliary E-RAB establishment rejection message is sent to the main control cell base station; wherein the auxiliary E-RAB establishment rejection message comprises: an auxiliary E-RAB identifier, QoS parameters of the auxiliary E-RAB, a GTP-TE identifier and a rejection reason; the reject reason may be a specific reason why the auxiliary cell base station cannot establish the auxiliary E-RAB, for example, if the air interface resource of the main cell base station is insufficient, the reject reason is filled as that the air interface resource is insufficient, if the QoS parameter cannot be satisfied, the reject reason is filled as that the QoS parameter cannot be satisfied, and the QoS parameter that the main cell base station can currently receive is filled, so that the main cell base station uses the QoS parameter when sending the auxiliary E-RAB establishment request message next time.
Step 205: the auxiliary cell base station sends an auxiliary E-RAB establishment response message to the master cell base station, and then executes step 206;
wherein the auxiliary E-RAB establishment response message comprises: auxiliary E-RAB identification and GTP-TE identification;
and when the type of the service data sent to the UE by the MME/S-GW is the type of the service data which is sent to the main control cell base station by the UE and needs to be transmitted, the link is adopted for transmission.
Step 206: when the type of the service data issued by the MME/S-GW to the UE is the set type of the service data, the MME/S-GW sends the service data issued to the UE to the main control cell base station through an S1 interface, and after receiving the service data, the main control cell base station sends the received service data to the auxiliary cell base station through an X2 interface;
here, after receiving the service data, the master cell base station transmits the service data to the secondary cell base station through the X2 interface according to the stored UE id and the marked secondary cell base station.
Step 207: and after receiving the service data, the auxiliary cell base station sends the received service data to the UE, and the current processing flow is ended.
When the established auxiliary wireless link connection is not needed any more, the established auxiliary wireless link connection can be released, at the moment, the main control cell base station needs to send a release request message of the auxiliary wireless link connection containing the auxiliary cell base station identification and the UE identification to the auxiliary cell base station, and simultaneously sends a release request message of the auxiliary wireless link connection containing the auxiliary cell base station identification to the UE; after receiving the release request message, the UE and the auxiliary cell base station terminate the auxiliary wireless link connection between the UE and the auxiliary cell base station through information interaction; after the termination, the auxiliary cell base station sends a release confirmation message of the auxiliary wireless link connection to the main control cell base station; after receiving the release confirmation message of the secondary radio link connection, the master cell base station indicates that the established secondary radio link connection has been released, and correspondingly, the master cell base station and the secondary cell base station delete corresponding information.
Example two:
the application scenario of this embodiment is: the master cell base station determines that the data interaction mode is a distributed data distribution mode, wherein the distributed data distribution mode is applicable to a plurality of DRBs, namely: multiple secondary radio links may be established simultaneously, each of which may carry a DRB. As shown in fig. 3, the method for data interaction in CoMP communication technology of this embodiment includes the following steps:
step 301: the UE is powered on and initialized, and then step 302 is executed.
Step 302: establishing a main wireless link connection between the UE and the main control cell base station, then establishing an auxiliary wireless link connection between the UE and the auxiliary cell base station, and then executing step 303;
here, the procedure for establishing the primary radio link connection and the secondary radio link connection is identical to the procedure described in step 202 in the first embodiment, and is not described in detail.
Step 303: the master control cell base station sends an auxiliary E-RAB establishment request message to the auxiliary cell base station;
here, the supplementary E-RAB establishment request message includes: the method comprises the following steps of assisting an E-RAB identification, QoS parameters of the E-RAB, a GTP-TE identification, an air interface transmission mode and a data interaction mode; the data interaction mode is a distributed data distribution mode.
Step 304: after the auxiliary cell base station receives the request message, after determining that enough wireless resources exist according to the current system load condition of the auxiliary cell base station, sending an E-RAB establishment request message to MME/S-GW, and simultaneously configuring the Radio Link Control (RLC) layer wireless connection transmission mode of the air interface of the auxiliary cell base station according to the air interface transmission mode in the request message;
here, the E-RAB establishment request message includes: the base station identification of the auxiliary cell, the identification of the UE, the identification of the auxiliary E-RAB, the QoS parameter of the auxiliary E-RAB, the GTP-TE identification and the transport layer address;
the wireless connection transmission mode comprises: UM mode and AM mode;
if the auxiliary cell base station determines that sufficient wireless resources do not exist according to the current system load condition of the auxiliary cell base station, an auxiliary E-RAB establishment rejection message is sent to the main control cell base station; wherein the auxiliary E-RAB establishment rejection message comprises: an auxiliary E-RAB identifier, QoS parameters of the auxiliary E-RAB, a GTP-TE identifier and a rejection reason; the reject reason may be a specific reason why the auxiliary E-RAB cannot be established by the auxiliary cell base station, for example, if the air interface resource of the auxiliary cell base station is insufficient, the reject reason is filled as that the air interface resource is insufficient, if the QoS parameter cannot be satisfied, the reject reason is filled as that the QoS parameter cannot be satisfied, and the QoS parameter that can be currently received by the auxiliary cell base station is filled, so that the main cell base station uses the QoS parameter when sending the auxiliary E-RAB bearer establishment request message next time.
Step 305: after receiving the establishment request message, MME/S-GW returns an E-RAB establishment response message to the auxiliary cell base station;
here, the E-RAB setup response message includes: a secondary cell base station identity, an identity of the UE, a secondary E-RAB identity, QoS parameters for the secondary E-RAB, a GTP-TE identity, and a transport layer address.
Step 306: after receiving the setup response message, the assisting cell base station sends an assisting E-RAB setup response message to the master cell base station, and then executes step 307;
here, the supplementary E-RAB establishment response message includes: auxiliary E-RAB identification and GTP-TE identification;
after receiving the response message of the auxiliary E-RAB establishment, the main control cell base station indicates that the auxiliary E-RAB is established, so that a corresponding relation is established between the MME/S-GW and the auxiliary cell base station, and the service data sent to the UE by the MME/S-GW can be directly sent to the auxiliary cell base station and then sent to the UE by the auxiliary cell base station.
Step 307: and when the service data type sent to the UE by the MME/S-GW is the set service data type, the MME/S-GW sends the service data sent to the UE to the auxiliary cell base station through the S1 interface.
Step 308: and after receiving the service data, the auxiliary cell base station sends the received service data to the UE, and the current processing flow is ended.
Based on the above method, the present invention further provides a system for data interaction in CoMP communication technology, as shown in fig. 4, the system includes: a core network 41, a master cell base station 42, and an auxiliary cell base station 43;
the core network 41 is configured to send service data issued to the UE to the main cell base station 42 when the data interaction mode is a centralized data distribution mode; or, when the data interaction mode is a distributed data distribution mode, the service data issued to the UE is sent to the auxiliary cell base station 43;
the main control cell base station 42 is configured to send the received service data to the auxiliary cell base station 43 after receiving the service data sent by the core network 41;
the auxiliary cell base station 43 is configured to receive service data sent by the master cell base station 42; or receive service data sent by the core network 41.
The core network 41 is specifically configured to:
when the data interaction mode is a centralized data distribution mode and the type of the service data issued to the UE is the set type of the service data, the service data issued to the UE is sent to the master cell base station 42 through the S1 interface; or, when the data interaction mode is a distributed data distribution mode and the type of the service data issued to the UE is the set type of the service data, the service data issued to the UE is sent to the auxiliary cell base station 43 through the S1 interface;
the master cell base station 42 is specifically configured to:
after receiving the service data sent by the core network 41, the received service data is sent to the secondary cell base station 43 through the X2 interface.
The system may further include a UE 44 configured to establish a primary radio link connection with the master cell base station 42 and then establish an auxiliary radio link connection with the auxiliary cell base station 43 after being powered on and initialized;
the master cell base station 42 is further configured to send an auxiliary E-RAB establishment request message to the auxiliary cell base station 43, and receive an auxiliary E-RAB establishment response message sent by the auxiliary cell base station 43;
the auxiliary cell base station 43 is further configured to receive an auxiliary E-RAB establishment request message sent by the main control cell base station 42 when the data interaction mode is a centralized data distribution mode, and after receiving the request message and determining that there is sufficient radio resources according to the current system load condition of the auxiliary cell base station, configure an RLC layer radio connection transmission mode of an air interface of the auxiliary cell base station according to the air interface transmission mode in the request message, and then send an auxiliary E-RAB establishment response message to the main control cell base station 42; or, when the data interaction mode is a distributed data distribution mode, receiving an auxiliary E-RAB establishment request message sent by the master cell base station 42, after receiving the request message, determining that sufficient radio resources exist according to the current system load condition of the master cell base station, sending the E-RAB establishment request message to the core network 41, meanwhile, configuring an RLC layer radio connection transmission mode of an air interface of the master cell base station according to the air interface transmission mode in the request message, and after receiving an E-RAB establishment response message returned by the core network 41, sending an auxiliary E-RAB establishment response message to the master cell base station 42;
the core network 41 is further configured to return an E-RAB establishment response message to the auxiliary cell base station 43 after receiving the E-RAB establishment request message sent by the auxiliary cell base station 43.
The core network 41 is further configured to send the service data sent to the UE to the main cell base station 42 through the S1 interface when the type of the service data sent to the UE is not the set type of the service data;
the main control cell base station 42 is further configured to, after receiving the service data, send the received service data to the UE 44;
the UE 44 is further configured to receive service data sent by the master cell base station 42.
The auxiliary cell base station 43 is further configured to send an auxiliary E-RAB establishment rejection message to the master cell base station 42 after determining that there is no sufficient radio resource according to the current system load condition of the auxiliary cell base station;
the master cell base station 42 is further configured to receive an auxiliary E-RAB establishment rejection message sent by the auxiliary cell base station 43.
The main cell base station 42 is further configured to send a release request message of the auxiliary radio link connection including an auxiliary cell base station identifier and a UE identifier to the auxiliary cell base station 43, send a release request message of the auxiliary radio link connection including the auxiliary cell base station identifier to the UE 44, and receive a release confirmation message of the auxiliary radio link connection sent by the auxiliary cell base station 43 when the established auxiliary radio link connection is not needed;
the auxiliary cell base station 43 is further configured to terminate the auxiliary wireless link connection between the UE 44 and the auxiliary cell base station 42 through information interaction with the UE after receiving the release request message sent by the main control cell base station 42, and then send the release request message to the main control cell base station 42;
the UE 44 is further configured to terminate the auxiliary wireless link connection between the master cell base station 42 and the auxiliary cell base station 43 through information interaction with the auxiliary cell base station after receiving the release request message sent by the master cell base station.
The auxiliary cell base station 43 is further configured to send the received service data to the UE 44 after receiving the service data;
the UE 44 is further configured to receive service data sent by the secondary cell base station 43.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (13)
1. A method for data interaction in coordinated multipoint (CoMP) communication technology, the method comprising:
when the data interaction mode is a centralized data distribution mode, the core network sends service data issued to User Equipment (UE) to a main control cell base station, and the main control cell base station sends the received service data to an auxiliary cell base station after receiving the service data; or,
when the data interaction mode is a distributed data distribution mode, the core network sends service data issued to the UE to the auxiliary cell base station; the main control cell base station determines a data interaction mode according to the load condition of the main control cell base station; or, the master cell base station determines a data interaction mode according to the type of service data to be transmitted by the UE;
further, when the type of the service data issued to the UE by the MME/S-GW is not the set type of the service data, the MME/S-GW sends the service data issued to the UE to the master cell base station through the S1 interface; and after receiving the service data, the main control cell sends the received service data to the UE.
2. The method according to claim 1, characterized in that the method is in particular:
when the data interaction mode is a centralized data distribution mode and the type of the service data sent to the UE by the core network is the type of the set service data, the core network sends the service data sent to the UE to the main control cell base station through an S1 interface, and the main control cell base station sends the received service data to the auxiliary cell base station through an X2 interface after receiving the service data; or,
and when the data interaction mode is a distributed data distribution mode and the type of the service data sent to the UE by the core network is the set type of the service data, the core network sends the service data sent to the UE to the auxiliary cell base station through an S1 interface.
3. The method according to claim 1 or 2, wherein before the core network sends the service data sent to the UE to the master cell base station, the method further comprises:
starting up the UE and initializing;
the method comprises the steps that a main wireless link connection is established between UE and a main control cell base station, and then an auxiliary wireless link connection is established between the UE and an auxiliary cell base station;
the master cell base station sends an auxiliary radio access bearer (E-RAB) establishment request message to the auxiliary cell base station;
after the auxiliary cell base station receives the request message and determines that enough wireless resources exist according to the current system load condition of the auxiliary cell base station, the auxiliary cell base station configures a wireless link control (RLC) layer wireless connection transmission mode of an air interface of the auxiliary cell base station according to the air interface transmission mode in the request message, and then sends an auxiliary E-RAB establishment response message to the main control cell base station; or,
before the core network sends the service data issued to the UE to the secondary cell base station, the method further includes:
starting up the UE and initializing;
the method comprises the steps that a main wireless link connection is established between UE and a main control cell base station, and then an auxiliary wireless link connection is established between the UE and an auxiliary cell base station;
the master control cell base station sends an auxiliary E-RAB establishment request message to the auxiliary cell base station;
after receiving the request message, the auxiliary cell base station determines that enough wireless resources exist according to the current system load condition of the auxiliary cell base station, and then sends an E-RAB establishment request message to a core network, and simultaneously configures an RLC layer wireless connection transmission mode of an air interface of the auxiliary cell base station according to the air interface transmission mode in the request message;
after receiving the establishment request message, the core network returns an E-RAB establishment response message to the auxiliary cell base station;
and after receiving the establishment response message, the auxiliary cell base station sends an auxiliary E-RAB establishment response message to the main control cell base station.
4. The method according to claim 3, wherein the UE establishes the secondary radio link connection with the secondary cell base station, specifically:
UE sends request information for establishing auxiliary wireless link connection to a master control cell base station;
after receiving the message, the master control cell base station sends a request message for establishing the auxiliary wireless link connection to the auxiliary cell base station;
after receiving the message, the auxiliary cell base station confirms that the service establishment with the UE can be accepted, and then sends an establishment confirmation message of the auxiliary wireless link connection to the main control cell base station;
and after receiving the message, the master control cell base station marks the auxiliary cell base station as the auxiliary cell base station, and then sends a confirmation message for establishing the auxiliary wireless link connection to the UE.
5. The method of claim 3, further comprising:
and the auxiliary cell base station sends an auxiliary E-RAB establishment rejection message to the main control cell base station after determining that sufficient wireless resources do not exist according to the current system load condition of the auxiliary cell base station.
6. A method according to claim 1 or 2, characterized in that the method further comprises:
and after receiving the service data, the auxiliary cell base station sends the received service data to the UE.
7. The method of claim 3, further comprising:
when the established auxiliary wireless link connection is not needed, the main control cell base station sends a release request message of the auxiliary wireless link connection containing the auxiliary cell base station identification and the UE identification to the auxiliary cell base station, and simultaneously sends a release request message of the auxiliary wireless link connection containing the auxiliary cell base station identification to the UE;
after receiving the release request message, the UE and the auxiliary cell base station terminate the auxiliary wireless link connection between the UE and the auxiliary cell base station through information interaction;
and then, the auxiliary cell base station sends a release confirmation message of the auxiliary wireless link connection to the main cell base station.
8. A system for data interaction in CoMP communication techniques, the system comprising: the system comprises a core network, a master cell base station and an auxiliary cell base station;
the core network is used for sending the service data issued to the UE to the master control cell base station when the data interaction mode is a centralized data distribution mode; or when the data interaction mode is a distributed data distribution mode, sending the service data issued to the UE to the auxiliary cell base station;
the main control cell base station is used for sending the received service data to the auxiliary cell base station after receiving the service data sent by the core network;
the auxiliary cell base station is used for receiving the service data sent by the main control cell base station; or, receiving service data sent by a core network; the main control cell base station determines a data interaction mode according to the load condition of the main control cell base station; or, the master cell base station determines a data interaction mode according to the type of service data to be transmitted by the UE;
the core network is further configured to send the service data issued to the UE to the master cell base station through the S1 interface when the type of the service data issued to the UE is not the set type of the service data;
the master control cell base station is also used for sending the received service data to the UE after receiving the service data;
and the UE is also used for receiving the service data sent by the master cell base station.
9. The system of claim 8, wherein the core network is specifically configured to:
when the data interaction mode is a centralized data distribution mode and the type of the service data issued to the UE is the set type of the service data, the service data issued to the UE is sent to the master cell base station through an S1 interface; or when the data interaction mode is a distributed data distribution mode and the type of the service data issued to the UE is the set type of the service data, the service data issued to the UE is sent to the auxiliary cell base station through the S1 interface;
the master cell base station is specifically configured to:
after receiving the service data sent by the core network, sending the received service data to the auxiliary cell base station through an X2 interface.
10. The system of claim 9, further comprising the UE, configured to establish a primary radio link connection with the primary cell base station after being powered on and initialized, and then establish a secondary radio link connection with the secondary cell base station;
the master cell base station is further configured to send an auxiliary E-RAB establishment request message to the auxiliary cell base station, and receive an auxiliary E-RAB establishment response message sent by the auxiliary cell base station;
the auxiliary cell base station is further configured to receive an auxiliary E-RAB establishment request message sent by the master cell base station when the data interaction mode is a centralized data distribution mode, configure an RLC layer wireless connection transmission mode of an air interface of the auxiliary cell base station according to the air interface transmission mode in the request message after determining that sufficient wireless resources exist according to a current system load condition of the auxiliary cell base station after receiving the request message, and send an auxiliary E-RAB establishment response message to the master cell base station; or, when the data interaction mode is a distributed data distribution mode, receiving an auxiliary E-RAB establishment request message sent by the master cell base station, after receiving the request message, determining that sufficient wireless resources exist according to the current system load condition of the master cell base station, sending the E-RAB establishment request message to the core network, meanwhile, configuring an RLC layer wireless connection transmission mode of an air interface of the master cell base station according to the air interface transmission mode in the request message, and after receiving an E-RAB establishment response message returned by the core network, sending an auxiliary E-RAB establishment response message to the master cell base station;
and the core network is also used for returning an E-RAB establishment response message to the auxiliary cell base station after receiving the E-RAB establishment request message sent by the auxiliary cell base station.
11. The system of claim 10,
the auxiliary cell base station is also used for sending an auxiliary E-RAB establishment rejection message to the main control cell base station after determining that no enough wireless resources exist according to the current system load condition of the auxiliary cell base station;
and the master cell base station is also used for receiving an auxiliary E-RAB establishment rejection message sent by the auxiliary cell base station.
12. The system of claim 10,
the master cell base station is further configured to send a release request message of the auxiliary wireless link connection including an auxiliary cell base station identifier and a UE identifier to the auxiliary cell base station when the established auxiliary wireless link connection is not required, send a release request message of the auxiliary wireless link connection including the auxiliary cell base station identifier to the UE, and receive a release confirmation message of the auxiliary wireless link connection sent by the auxiliary cell base station;
the auxiliary cell base station is further configured to terminate the auxiliary wireless link connection between the auxiliary cell base station and the UE through information interaction with the UE after receiving the release request message sent by the master cell base station, and then send the release request message to the master cell base station;
and the UE is also used for terminating the auxiliary wireless link connection between the main cell base station and the auxiliary cell base station through information interaction with the auxiliary cell base station after receiving the release request message sent by the main cell base station.
13. The system according to any one of claims 8 to 12,
the auxiliary cell base station is also used for sending the received service data to the UE;
the UE is further configured to receive service data sent by the secondary cell base station.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252877.1A CN102378181B (en) | 2010-08-10 | 2010-08-10 | A kind of method and system of data exchange in coordinated multi-point communication technology |
| PCT/CN2011/074447 WO2012019476A1 (en) | 2010-08-10 | 2011-05-20 | Method and system for data interaction in coordinated multiple point communication technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252877.1A CN102378181B (en) | 2010-08-10 | 2010-08-10 | A kind of method and system of data exchange in coordinated multi-point communication technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102378181A CN102378181A (en) | 2012-03-14 |
| CN102378181B true CN102378181B (en) | 2015-08-12 |
Family
ID=45567339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010252877.1A Expired - Fee Related CN102378181B (en) | 2010-08-10 | 2010-08-10 | A kind of method and system of data exchange in coordinated multi-point communication technology |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102378181B (en) |
| WO (1) | WO2012019476A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5969298B2 (en) * | 2012-07-27 | 2016-08-17 | 株式会社Ｎｔｔドコモ | Mobile station, small radio base station, and communication control method |
| CN110461029B (en) * | 2012-11-02 | 2022-07-08 | 北京三星通信技术研究有限公司 | Data transmission method and system under heterogeneous network |
| CN104137646B (en) * | 2013-02-01 | 2018-11-16 | 华为技术有限公司 | The method and apparatus of data interaction |
| WO2015089791A1 (en) * | 2013-12-19 | 2015-06-25 | 华为技术有限公司 | Method, device and system for realizing carrier aggregation |
| CN109429368B (en) | 2017-06-23 | 2022-03-01 | 中兴通讯股份有限公司 | Message sending method, system, device, network element, storage medium and processor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1505782A2 (en) * | 2003-08-07 | 2005-02-09 | Samsung Electronics Co., Ltd. | Method for cell reselection for reception of packet data |
| CN101420672A (en) * | 2007-10-22 | 2009-04-29 | 中兴通讯股份有限公司 | Implementing method for user service fast access |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8942165B2 (en) * | 2008-08-01 | 2015-01-27 | Qualcomm Incorporated | System and method for distributed multiple-input multiple-output (MIMO) in a wireless communication system |
| CN101645729A (en) * | 2008-08-08 | 2010-02-10 | 夏普株式会社 | Multi-antenna multi-base station cooperative method for downlink honeycomb system and base stations |
| CN101686557B (en) * | 2008-09-22 | 2014-04-02 | 华为技术有限公司 | Method and device for sending multi-cell scheduling information and user equipment |
| CN101741439B (en) * | 2008-11-10 | 2013-06-05 | 中兴通讯股份有限公司 | Coordinated multi-point transmission method |
| CN101883402A (en) * | 2009-05-07 | 2010-11-10 | 中兴通讯股份有限公司 | Cooperative data transmission method and system |
| CN101662319A (en) * | 2009-09-23 | 2010-03-03 | 东南大学 | Closed loop macro diversity method based on disturbance theory in coordinated multi-point system |
-
2010
- 2010-08-10 CN CN201010252877.1A patent/CN102378181B/en not_active Expired - Fee Related
-
2011
- 2011-05-20 WO PCT/CN2011/074447 patent/WO2012019476A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1505782A2 (en) * | 2003-08-07 | 2005-02-09 | Samsung Electronics Co., Ltd. | Method for cell reselection for reception of packet data |
| CN101420672A (en) * | 2007-10-22 | 2009-04-29 | 中兴通讯股份有限公司 | Implementing method for user service fast access |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102378181A (en) | 2012-03-14 |
| WO2012019476A1 (en) | 2012-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3711443B1 (en) | Improved iab node | |
| US10469238B2 (en) | Method and apparatus for configuring aggregate maximum bit rate | |
| CN104349504B (en) | User's equipment and its device communicate selection method to device | |
| CN104145526B (en) | The system and method that radio bearer management is carried out to multicast communication | |
| CN103379570B (en) | Method for processing business, base station and subscriber equipment | |
| CN109417695A (en) | A kind of communication path conversion method and equipment | |
| CN109788517B (en) | Pcell or PScell management method and device | |
| CN102164385B (en) | Switching method and relay node | |
| CN109392028B (en) | Data transmission method and device | |
| CN105338513A (en) | Device to device (D2D) service processing method and device | |
| CN106304403A (en) | A kind of multi-link method for building up and relevant device | |
| CN104429156B (en) | A kind of method for building up of wireless network, equipment and system | |
| EP3515004B1 (en) | Method, base station, and system for sending rrc signaling | |
| CN103379546B (en) | The method and apparatus of data distribution | |
| CN102378181B (en) | A kind of method and system of data exchange in coordinated multi-point communication technology | |
| CN114788365A (en) | Apparatus and method for service subscription via E2 interface in radio access network communication system | |
| US20230199539A1 (en) | Method and device for measuring performance in wireless communication system | |
| CN102595499B (en) | A kind of UE sets up the method for mixing carrying in multiple community | |
| CN106412993B (en) | method, base station and system for balancing load | |
| EP2640160A1 (en) | Method and device for configuring cell parameters of relay node | |
| CN111436049B (en) | Initial access method, device and equipment | |
| CN102036414B (en) | Method and system for realizing X2 function | |
| US20170196039A1 (en) | Short range communications method, device, and system | |
| EP3273741B1 (en) | Data transmission method and device | |
| CN105557017A (en) | Data transmission method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20190810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |