CN101471828A - Method for implementing data sharing process between household nodes - Google Patents
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- CN101471828A CN101471828A CNA2007103005007A CN200710300500A CN101471828A CN 101471828 A CN101471828 A CN 101471828A CN A2007103005007 A CNA2007103005007 A CN A2007103005007A CN 200710300500 A CN200710300500 A CN 200710300500A CN 101471828 A CN101471828 A CN 101471828A
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Abstract
The invention relates to a method for realizing data sharing among multiple household nodes. The method comprises the following steps: in a core network, exchanging data sharing parameters and triggering and participating in load supporting establishment of household nodes during a data-sharing process via an auxiliary server, partitioning downlink data and combining and converging uplink data from different directions, and assisting charging via the auxiliary server. The auxiliary server is designed into an independent node or a logic entity. The method can realize data sharing among multiple household nodes, so as to improve the peak data rate of system throughput.
Description
Technical field
The present invention relates to a kind of method that is used for when household IP inserts, realizing the data sharing process between a plurality of home (e) nodes.
Background technology
Nowadays, the family internet inserts and uses xDSL (using ADSL usually) or use the 2G/2.5G/3G/WiFi/WiMAX wireless data card.
Under the situation of using xDSL, the terminal use needs static line, for example needs to be used for the twisted wire of PSTN.Yet mobile operator can not enter home access market.In addition, when the terminal use when the another location is moved in a position, need cancel registration from original position, use new phone number in new location registers then.Therefore, make troubles for the terminal use.
Under the situation of using wireless data card, this cartoon often is inserted into kneetop computer or PC, so shortcoming is to have only a machine can insert external the Internet.
The notion of home (e) node is introduced into and solves the problems referred to above.As shown in FIG. 1, so-called home (e) node serves as local area network (LAN) (LAN, may comprise WLAN (WiFi) equipment) with cellular network (perhaps wireless wideband access network, WBA) gateway apparatus between, thereby the LAN that connects the clients to cellular network inserts, for example so that insert for they provide the internet.
Below, suppose that access network is based on the cellular network of 3G LTE (Long Term Evolution) technology, therefore term eNodeB (" enhancement mode Node B ") can use interchangeably with term " base station ", and term UE (subscriber equipment) is used for the client terminal device of cellular network.Yet these technology also can be used for other WiMAXs according to the bottom technology and insert (WBA) system, for example also can be used for micro-wave access global inter communication WiMAX or Korea S wireless broad band technology WiBro system.
Multiple-input and multiple-output (MIMO) is the important technology among the LTE TDD (time division duplex), and the peak-data rates of whole system data throughout and unique user can greatly be improved and promote to this technology.MIMO will be the principal character in the LTE TDD WBA I project, such as 2 * 2MIMO, 4 * 4MIMO etc.
Home (e) node can have the different capabilities classification, such as high-end, middle-end and low side.Because the low side home (e) node only has the limited operation ability or at the limited MIMO capacity of LTE TDD, so the low side home (e) node can not be supported the higher data rate requirement of the user on the LTE TDD Uu interface.
The data transfer rate that how to improve in this low side home (e) node system be should give research.A kind of good idea is to utilize adjacent home (e) node capacity.Relate to following two kinds of situations in such circumstances:
Situation 1:
It at first is the MIMO restriction of home (e) node.For example, if use 4 * 4MIMO in enhancement mode Node B eNB, but home (e) node only has 2 * 2MIMO, then adjacent home (e) node can be formed virtual MIMO system, this virtual MIMO system has 4 * 4 antennas, cooperates with the enhancement mode Node B eNB with 4 * 4MIMO.This virtual MIMO system can be realized maximum system data throughput.Virtual MIMO may also be referred to as multiuser MIMO.Under these circumstances, the user is the home (e) node that is arranged in identical building (place), and the number of antennas that this home (e) node had is littler than the number of antennas that the enhancement mode Node B eNB that is made of multi-user MIMO system is had; User's (home (e) node) can share other users' that are made up of identical multi-user system reserve capacity; The user need have certain information exchange mechanism and share other users' capacity (signaling and exchanges data) by other wireless technologys (such as ultrawideband UWB, bluetooth or infrared etc.).At virtual MIMO structure, the home (e) node with MIMO restriction should be arranged in a sub-district, to carry out virtual MIMO work.
Situation 2:
Second kind of situation is the limited working capacity of home (e) node.For limited working capacity, home (e) node can not be supported High Data Rate.For example, identical with HSDPA classification among the WCDMA, first category (1.2Mbit/s) is not supported the 7th classification (7.2Mbit/s).If but other adjacent home (e) node can auxiliary data transmit, then each home (e) node has single the connection with enhancement mode Node B eNB.This can realize many haplotype datas rate at the one family node by the auxiliary of home (e) node.In this conception, user's (home (e) node) is positioned at identical building (place), and this building has the limited working capacity of being made up of a plurality of home (e) node system; User's (home (e) node) can share constitute by identical a plurality of home (e) node system, from other users' capacity; Each user should set up with the link of enhancement mode Node B eNB separately and should have certain information exchange mechanism, to share other users' reserve capacity (signaling and exchanges data) by other wireless technologys (such as UWB, bluetooth or infrared etc.).For limited working capacity, the home (e) node with low capacity can be positioned at adjacent sub-district, but all home (e) nodes should have closely.
Both of these case has identical feature, and these features information exchange mechanism between front yard node and the core net of need managing household affairs needs to set up the connection from enhancement mode Node B eNB to each home (e) node; Need adjacent home (e) node information exchange mechanism.
Up to now, all researchs about virtual MIMO concentrate on the performance evaluation of conceiving in affirmation and the laboratory.For use when virtual MIMO or when how low end subscriber is auxiliary between user's (home (e) node) process of shared data how, without any solution.
Summary of the invention
In the present invention, proposed a kind of method, its purpose is to realize the data sharing process between a plurality of users.
In core net, set up by the carrying that secondary server comes swap data to share the home (e) node of parameter and triggering and participation data sharing process, cut apart down link data and combination and convergence uplink data, thereby realize the data sharing process between a plurality of home (e) nodes from different directions.
In the method for the invention, can also assist charging by secondary server.Method support of the present invention is based on the charging or the time-based charging of data flow.All parameters that will be referred to charge by secondary server forward the charging center to, to realize different chargings.
The related core net of the inventive method is a System Architecture Evolution SAE core net, or the core net in the WiMAX system.
In the method for the invention, the home (e) node of described participation data sharing process comprises master's house's front yard node and at least one auxilliary home (e) node.Auxilliary home (e) node is adjacent with the front yard node of managing household affairs and participates in the home (e) node of the data sharing of master's house's front yard node.
After the data sharing request that receives master's house's front yard node, adjacent home (e) node is by at least one data sharing that determines whether participating in this master's house's front yard node in capacity, ability and the strategy of checking oneself.Master's house's front yard node can use point-to-point signaling or broadcast signaling that the data sharing request is sent to adjacent home (e) node.
The owner of auxilliary home (e) node can be provided with shared resource percentage by man-machine interface.According to the priority of master's house's front yard node, described shared resource is the slack resources or the whole resource of auxilliary home (e) node.
Described data sharing parameter comprises the service quality of each carrying of the capacity of number, each auxilliary home (e) node of auxilliary home (e) node and ability, home (e) node.
The capacity of each auxilliary home (e) node and ability are reported to master's house's front yard node by signaling between auxilliary home (e) node and the master's house's front yard node and data link, are notified to described secondary server then.Link establishment between a plurality of home (e) nodes can realize by automatic or manual configuration mode.
Described carrying is set up and is comprised that the System Architecture Evolution carrying is set up and radio bearer is set up.The service quality that comprises maximum data rate is corresponding with described carrying.
Based on the capacity and the ability parameter of master's house's front yard node, described secondary server notice IAD is established to the corresponding carrying of master's house's front yard node.
Based on service quality, capacity and the ability of auxilliary home (e) node, described secondary server notice IAD is established to the corresponding carrying of each auxilliary home (e) node.
But the down link data that described secondary server applying label mechanism or other data sequence designator mechanism come mark to cut apart.
Described secondary server utilization ordering and rearrangement mechanism make up and assemble uplink data.
In the method for the invention, this secondary server is designed to isolated node or logic entity.This logic entity is the part of physics IAD or other physics core network entity.
By the data sharing process between a plurality of home (e) nodes, network can redeploy the reserve capacity of each home (e) node and enhancement mode Node B eNB.Therefore, this data sharing process helps cooperation and the coordination in the whole network.
For the MIMO restriction of home (e) node, the present invention has provided a kind of virtual MIMO that how to use and has improved the implementation of the peak-data rates of throughput of system in the LTETDD of reality system.
For the limited operation capacity of home (e) node, the present invention can improve the data transfer rate of single home (e) node.On the other hand, this conception provides master's house's backup that the front yard node connects also can for enhancement mode Node B eNB.If enhancement mode Node B eNB or master's house's front yard node run into certain difficulty on the Uu interface, to decay such as interference or wireless environment, then auxilliary home (e) node also can transmit data branch road as a supplement.This can be regarded as back mechanism.
Description of drawings
Illustrate in greater detail the present invention below in conjunction with accompanying drawing, wherein:
Fig. 1 illustrates the notion of home (e) node.
Fig. 2 illustrates the schematic diagram of data sharing (situation 1) of the MIMO restriction of home (e) node.
Fig. 3 illustrates the schematic diagram of the data sharing (situation 2) of the limited operation ability of home (e) node.
Fig. 4 illustrates the home (e) node HN under the situation 2 and the process of the data sharing between the SAE core net.
Embodiment
PHN is the abbreviation of master's house's front yard node, and this master's house front yard node provides the WiFi covering to the user and serves as main connector and telegon between a plurality of home (e) nodes.When a user in residing in its coverage attempted to enter the Internet access service, each home (e) node can be master's house's front yard node.For down link data, PHN can obtain the user data from some directions, such as directly coming self-reinforcing type Node B eNB and from the user data of a plurality of SHN.Based on label mechanism or other data sequence designator mechanism, PHN should have the ability of ordering finished and rearrangement.Then, PHN can forward whole data to user by WiFi.For uplink data, PHN should have decision and how cut apart down link data and son section is distributed to enhancement mode Node B eNB or distribute to the ability of other SHN by the data link between PHN and the SHN by the Radio Link of oneself.This may need and applying label mechanism or other data sequence designator mechanism.
SHN is the abbreviation of auxilliary home (e) node, should can independently be established to being connected of enhancement mode Node B eNB and aGW by auxilliary home (e) node, and from oneself enhancement mode Node B eNB receive user's part down link data and with this data forwarding to master's house's front yard node, vice versa.(PHN) sends to each home (e) node with request when adjacent home (e) node, and each home (e) node is when oneself having the ability of accepting this request, and this home (e) node can serve as auxilliary home (e) node.SHN will be forwarded to PHN from the down link data that enhancement mode Node B eNB receives usually, and will be forwarded to enhancement mode Node B eNB from the uplink data that PHN receives.
In 3GPP, aGW can be called as secondary server.And in WiMAX, aGW can be the device of the function with secondary server.
Fig. 2 illustrates mentioned situation 1 in the background technology part.Wherein, home (e) node PHN and HN1 can constitute virtual MIMO and set up link each other.
Fig. 3 illustrates mentioned situation 2 in the background technology part.Wherein, home (e) node PHN belongs to different enhancement mode Node B with HN2, but can set up link each other.
Fig. 2 and Fig. 3 have described the structure that can realize the data sharing between the HN.As special terminal, home (e) node PHN and SHN are connected to enhancement mode Node B eNB by LTE TDD type 2Uu interface.Each enhancement mode Node B eNB is connected to IAD aGW (SAE core net) by the S1 interface, and connects by X2 interface between enhancement mode Node B eNB.Realize that by wireless mode (WiFi, UWB or bluetooth etc.) or by wired mode (Ethernet etc.) home (e) node connects.If the Radio Link between the use home (e) node, then the distance between two home (e) nodes limits by the wireless technology such as WiFi, UWB or bluetooth.In Fig. 3, for instance, home (e) node PHN and HN1 are connected to enhancement mode Node B eNB1, and home (e) node HN2 is connected to enhancement mode Node B eNB2, and home (e) node HN2 is the SHN of PHN.When between home (e) node, data sharing occurring, a PHN is only arranged, but one or more SHN are arranged.
In System Architecture Evolution SAE core net, need to increase new secondary server and fulfil some miscellaneous function.
The SAE of the shared parameter of secondary server energy swap data and triggering and PHN carries foundation.The control by IAD aGW is set up in the SAE carrying, but secondary server should participate in carrying foundation and exchange some parameter with PHN.These parameters comprise:
The number of SHN promptly has how many adjacent home (e) nodes can add the data sharing of PHN.PHN and adjacent home (e) node are consulted, and which home (e) node can serve as SHN.For example, when the user initiated Internet service, PHN sent to adjacent home (e) node with the data sharing request, and with inquiry, which home (e) node is free or has the marginal capacity that adds data sharing.After the data sharing request that receives PHN, this adjacent home (e) node should be checked capacity and the ability of oneself, and the data sharing of the auxiliary PHN of decision.If this adjacent home (e) node can be accomplished this point, then this adjacent home (e) node should be set up signaling and data link with PHN for data forwarding.PHN can coordinate to obtain this number by adjacent home (e) node with other, and the number of these SHN is notified to secondary server.
The capacity of each SHN and ability.Each SHN has to PHN provides auxiliary different capacity and ability.The capacity of SHN and ability should be reported to PHN by signaling between SHN and the PHN and data link.Then, PHN is notified to secondary server with these parameters.
The service quality of each carrying of home (e) node.Based on capacity and the ability parameter of PHN, secondary server should notify IAD to be established to corresponding SAE carrying and the radio bearer of PHN.The service quality that comprises maximum data rate can be mapped to radio bearer.
Secondary server can trigger with the SAE carrying of SHN and set up.Secondary server has obtained service quality, capacity and the ability of SHN from PHN, and should notify IAD to be established to corresponding SAE carrying and the radio bearer of each SHN.The service quality that comprises maximum data rate can be mapped to radio bearer.
For down link data, secondary server should have the ability how decision is cut apart down link data and the son section is distributed to PHN and SHN.May need and applying label mechanism or other data sequence designator mechanism.
Secondary server can also make up and assemble the uplink data that is connected from a plurality of.For uplink data, when secondary server when PHN and other SHN receive a user's data, secondary server should have all data combinations are whole ability.May need data packet sequencing and rearrangement mechanism.
Secondary server can also be supported based on the charging of data flow and time-based charging.For paying side, two class charging requirements are arranged.One class is chargeed and required is that PHN is unique paying side, and this paying side bears the all-network expense.Another kind of requirement is that PHN and SHN all are the paying sides that bear the network charges of oneself.This two class is chargeed all needs the secondary server support.Secondary server obtains all information of PHN related in the data sharing and SHN.All parameters that this secondary server will be referred to charge forward the charging center to, to realize different chargings.
At present, bluetooth or infrared technique can realize between two portable terminals that signaling link is set up and data transmit.All mechanism can both be used to the present invention.Also should consider following details:
-each home (e) node can serve as SHN and share own resource with PHN, and each home (e) node can be contributed all resources or part resource to PHN at data are shared.
The owner of-home (e) node can be provided with shared resource percentage by man-machine interface in home (e) node, this percentage all in this way 10%, 50% or 100%.This percentage represents how many resources the one family node has to be contributed to a PHN.And according to the priority of PHN, this shared resource or idle resource, or whole resource.
-at link establishment, PHN can use point-to-point signaling or broadcast signaling that the data sharing request is sent to a plurality of adjacent home (e) nodes, and wait for response from each home (e) node.
-because each home (e) node has had the WiFi function, so the mesh network technology can be used to make up the WiFi network, to realize data sharing.
-when powering when business of initiation or to home (e) node, the link establishment between a plurality of home (e) nodes can realize by automatic or manual configuration mode.
If-public LTE TDD terminal has the ability with the SHN shared resource, then this public LTE TDD terminal also can be served as SHN.
Distance between the-home (e) node depends on the technology that is adopted.If the use electric wire is such as using Ethernet, then for this distance without limits.If use,, be possible to 100 meters then from several meters such as using bluetooth with wireless mode.
Fig. 4 is the data sharing process implementation at situation 2.For situation 1, also can have identical process implementation.
Area I is the WiFi interface of control signaling, and area I I is the communication that is used for other wireless technology of link establishment, such as UWB, bluetooth etc.Area I II is the LTE TDD type 2Uu interface of LTE access network interface and control signaling.Area I V is user data transmission and forwarding.
Step 1:PC (user) sends to PHN with service request by WiFi, inserts with the request internet service.
Step 2: when the PHN with data sharing function receives when request from PC, this PHN sends to other adjacent home (e) node with the data sharing request.In Fig. 3, there are two home (e) nodes to receive request from PHN.After inspection capacity and resource, home (e) node HN1 can not support the data sharing request and respond PHN with " refusal data sharing " then; Home (e) node 2 has reserve capacity and makes response, with support this request from PHN, and responds PHN with " accepting data sharing " then, should " accepting data sharing " have the capacity of HN2 and the service quality of permission etc.Therefore, home (e) node HN2 becomes the SHN of PHN, and is SHN only in this case.At this moment, the link between PHN and the home (e) node HN2 will be established.
Step 3: after obtaining information and parameter from SHN, PHN initiates radio resource control RRC and connects and set up, and the enhancement mode Node B is connected foundation with S1 between IAD/secondary server and will be triggered.And RRC connect to set up and to be connected foundation with the S1 of HN2 and also will to be triggered.In the connection of PHN was provided with, the information of SHN (number of SHN) and parameter (service quality, identity) should be reported to the SAE core net.
Step 4: IAD/secondary server triggers the SAE carrying of PHN and SHN and sets up and radio bearer foundation, and this will be based on the capacity and the ability of each home (e) node.
Step 5: for down link data, IAD/secondary server is finished data subdividing and this label is inserted each data division.IAD/secondary server sends to PHN by the down link carrying of PHN with a part.For uplink data, PHN will finish data subdividing and insert label, and by the up link carrying of PHN a part be sent to the SAE core net.Down link and uplink direction all are the main branch roads in this data sharing.
Step 6: for SHN and down link data, IAD/secondary server sends to SHN with the carrying of another part by SHN.For uplink data, SHN at first receives this part data and the uplink data of these data by SHN is forwarded to the SAE core net from PHN.Down link and uplink direction all are the additional branch roads in this data sharing.
Step 7:PHN and SHN are by UWB or bluetooth exchange down link and uplink data.And in this case, SHN can be regarded as data relay, and this data relay is shared the capacity of oneself, with the transfer of data of auxiliary PHN.
Step 8: for down link data, PHN makes up all data from SAE core net and SHN direction in order by label, and whole data are transferred to PC by WiFi.Certainly, for uplink data, the data that receive from PC should be split into several parts by PHN.
The above-mentioned steps order be not fix with unique; Also allow some step exchanging order.
At this, provided a kind of process that can be used to realize that the capacity between a plurality of home (e) nodes is shared.By assisting of adjacent home (e) node, PHN can obtain comparing higher data transfer rate with the capacity of single home (e) node.SHN can be regarded as the additional branch road of PHN, and these additional branch roads contribute the capacity of oneself to the user, to improve data transfer rate and performance.Additional branch road can be a branch road or more branch roads.
This process can simply and easily realize in LTE TDD WBA I project.There are not bigger modification and influence for existing LTE TDD framework and interface signaling.Only some parameters need be added in some message of X1 and S1 interface.Secondary server is isolated node or only is logic entity that this logic entity is the part of physics IAD or other existing physics core network entity.
Though above-mentioned execution mode realizes that in the SAE of 3GPP core net the present invention also can be used in WiMA and the improvement system thereof.
Although the example has in conjunction with the accompanying drawings carried out above description to the present invention, obviously the present invention is confined to this, and can make amendment in many ways within the disclosed scope of the claim of enclosing.
Claims (20)
1. method that is used to realize the data sharing process between a plurality of home (e) nodes, it is characterized in that, in core net, set up by the carrying that secondary server comes swap data to share the home (e) node of parameter and triggering and participation data sharing process, cut apart down link data and combination and convergence uplink data from different directions.2. method according to claim 1 is characterized in that, can also assist charging by secondary server.
3. method according to claim 2 is characterized in that, supports charging or time-based charging based on data flow.
4. method according to claim 3 is characterized in that, all parameters that will be referred to charge by secondary server forward the charging center to, to realize different chargings.
5. according to the described method of one of claim 1-4, it is characterized in that described core net is the core net in System Architecture Evolution core net or the WiMAX system.
6. according to the described method of one of claim 1-4, it is characterized in that the home (e) node of described participation data sharing process comprises master's house's front yard node and at least one auxilliary home (e) node.
7. method according to claim 6, it is characterized in that, after the data sharing request that receives master's house's front yard node, adjacent home (e) node is by at least one data sharing that determines whether participating in this master's house's front yard node in capacity, ability and the strategy of checking oneself.
8. method according to claim 7 is characterized in that, master's house's front yard node uses point-to-point signaling or broadcast signaling that the data sharing request is sent to adjacent home (e) node.
9. method according to claim 7 is characterized in that, the owner of auxilliary home (e) node is provided with shared resource percentage by man-machine interface.
10. method according to claim 9 is characterized in that, according to the priority of master's house's front yard node, described shared resource is the slack resources or the whole resource of auxilliary home (e) node.
11. method according to claim 5 is characterized in that, described data sharing parameter comprises the service quality of each carrying of the capacity of number, each auxilliary home (e) node of auxilliary home (e) node and ability, home (e) node.
12. method according to claim 11 is characterized in that, the capacity of each auxilliary home (e) node and ability are reported to master's house's front yard node by signaling between auxilliary home (e) node and the master's house's front yard node and data link, are notified to described secondary server then.
13. method according to claim 12 is characterized in that, the link establishment between a plurality of home (e) nodes can realize by automatic or manual configuration mode.
14., it is characterized in that described carrying is set up and comprised that the System Architecture Evolution carrying is set up and radio bearer is set up according to the described method of one of claim 1-4.
15. method according to claim 14 is characterized in that, comprises that the service quality of maximum data rate is corresponding with described carrying.
16. method according to claim 5 is characterized in that, based on the capacity and the ability parameter of master's house's front yard node, described secondary server notice IAD is established to the corresponding carrying of master's house's front yard node.
17. method according to claim 5 is characterized in that, based on service quality, capacity and the ability of auxilliary home (e) node, described secondary server notice IAD is established to the corresponding carrying of each auxilliary home (e) node.
18. according to the described method of one of claim 1-4, wherein, the down link data that described secondary server applying label mechanism or other data sequence designator mechanism come mark to cut apart.
19. according to the described method of one of claim 1-4, wherein, described secondary server utilization ordering and rearrangement mechanism make up and assemble uplink data.
20., it is characterized in that this secondary server is isolated node or logic entity according to the described method of one of claim 1-4.
21. secondary server according to claim 19 is characterized in that, described logic entity is the part of physics IAD or other physics core network entity.
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| CNA2007103005007A CN101471828A (en) | 2007-12-28 | 2007-12-28 | Method for implementing data sharing process between household nodes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710306A (en) * | 2012-05-11 | 2012-10-03 | 中兴通讯股份有限公司 | Method and device for realizing diversity transmission, and network side device |
| CN107079470A (en) * | 2014-11-07 | 2017-08-18 | 瑞典爱立信有限公司 | Medium education for permitting auxiliary access |
| CN107479420A (en) * | 2017-08-29 | 2017-12-15 | 北京寄云鼎城科技有限公司 | A kind of distributed data sharing method and equipment |
-
2007
- 2007-12-28 CN CNA2007103005007A patent/CN101471828A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710306A (en) * | 2012-05-11 | 2012-10-03 | 中兴通讯股份有限公司 | Method and device for realizing diversity transmission, and network side device |
| CN107079470A (en) * | 2014-11-07 | 2017-08-18 | 瑞典爱立信有限公司 | Medium education for permitting auxiliary access |
| US10834758B2 (en) | 2014-11-07 | 2020-11-10 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Media access control for license-assisted access |
| US10917914B2 (en) | 2014-11-07 | 2021-02-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Media access control for license-assisted access |
| CN107079470B (en) * | 2014-11-07 | 2021-03-05 | Oppo广东移动通信有限公司 | Media access control for licensed assisted access |
| CN107479420A (en) * | 2017-08-29 | 2017-12-15 | 北京寄云鼎城科技有限公司 | A kind of distributed data sharing method and equipment |
| CN107479420B (en) * | 2017-08-29 | 2019-09-06 | 北京寄云鼎城科技有限公司 | A kind of distributed data sharing method and equipment |
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