WO2012139402A1

WO2012139402A1 - Realizing method and equipment for high speed mobile communication

Info

Publication number: WO2012139402A1
Application number: PCT/CN2011/085010
Authority: WO
Inventors: 高卓; 石蕊
Original assignee: 电信科学技术研究院
Priority date: 2011-04-15
Filing date: 2011-12-30
Publication date: 2012-10-18
Also published as: CN102130716A; CN102130716B

Abstract

Disclosed in the embodiment of present invention is a high speed mobile communication realizing method and equipment. Explicit multi-system data communication mechanism and data processing mechanism within the vehicle processing module can be created among the vehicle processing module and the backhaul network and the access point inside the carriage via applying the technical solution of the present invention embodiment. Thereby multi-system data transmission can be achieved via uniform vehicle processing module under the high speed communication scene. The invention improves the stability of data transmission, avoids increasing of amount of hardware investments and modifications of the corresponding system according to the multi-system data transmission, saves the corresponding cost investment, and simplifies processing mechanism and design complexity.

Description

Method and device for implementing high speed mobile communication

This application claims the priority of the following Chinese patent application:

It was submitted to the China Patent Office on April 15, 2011, and the application number is 201110094790.0. The invention is called the Chinese Patent Application for "High-speed Mobile Communication Implementation Method and Equipment". Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for implementing high-speed mobile communication.

Background technique

Since the beginning of the 21st century, with the development of railway technology, the construction of high-speed railways around the world is very fast. The high-speed railway currently operates at a speed of 300km/h and may develop to 500km/h in the future. The wireless communication coverage of high-speed railway has obvious characteristics: high train running speed, long running distance and complicated geographical environment. Therefore, new requirements for high-speed switching of broadband communication systems are put forward, and existing cellular mobile communication technologies will Restricted, the quality of service for voice communication has been greatly reduced, and even "information islands" in the high-speed railway environment have emerged.

In addition, from a technical point of view, broadband wireless communication systems under high-speed railways face more problems in wireless communication systems than static or low-speed systems. The high-speed movement of terminals will bring significant impact to the entire communication system solution. Impact.

At present, there are two main types of ideas for solving high-speed railway coverage. One is to directly cover the public network, and the other is to directly cover the vehicle-borne system.

The following uses the LTE system as an example to describe the two methods separately.

FIG. 1 is a schematic structural diagram of a public network coverage mode in the prior art. In this manner, an external LTE (Long Term Evolved) cellular network is composed of an eNB (evolved Node B) and an EPC (Evolved Packet Core) device, which directly The LTE UE (User Equipment, ie, the terminal device) in the train communicates. In order to overcome the penetration loss of the car and increase the signal strength, a repeater can be installed in the upper part of the car to amplify the signal.

FIG. 2 is a schematic structural diagram of a coverage method of an in-vehicle system in the prior art. In this way, various types of APs (Access Points, access points;) are deployed inside the car, which are responsible for communicating with the terminal devices in the corresponding compartments of the car, and can also be used to support multiple modes simultaneously supporting multiple modes.

AP. The LTE network cellular network outside the car serves as a backhaul to complete the relay function of communication between the terminal equipment in the car and the core network and the external network. The on-board processing module installed on the car is the core module of this deployment mode, which is used to realize the aggregation processing of different standard data in the car, and communicates through the backhaul network in a wireless manner. The on-board processing module is usually wired and in-vehicle.

AP connection. It should be pointed out that the use of LTE as a backhaul network is only an indication, and other networks can be used as the backhaul network.

In the process of implementing the embodiments of the present invention, the applicant finds that the prior art has at least the following problems: The main disadvantage of the public network coverage mode is that if the repeater is not installed, the large penetration loss of the train car body will lead to the car insurance. The internal terminal signal is poor, and the communication quality is difficult to guarantee. Another problem is that for different terminals in the car, the corresponding standard network should be deployed along the train, and the deployment cost is high.

Hey.

For the above-mentioned industry, the industry is currently researching on the coverage of in-vehicle systems, but has not yet formed a mature system solution.

Summary of the invention

The embodiments of the present invention provide a method and a device for implementing high-speed mobile communication, and solve the problem of lack of an economical and reasonable solution to high-speed mobile scenarios, etc. through a perfect in-vehicle system coverage solution.

To achieve the above objective, an embodiment of the present invention provides a method for implementing high-speed mobile communication, including: Receiving encapsulated data of one or more standards sent by the backhaul network;

Performing decapsulation processing on the encapsulated data of one or more standards;

Transmitting the decapsulated data of one or more standards to the access point of the corresponding system, so that the access point of the corresponding standard forwards the data to the terminal device.

On the other hand, an embodiment of the present invention further provides an in-vehicle processing module, including:

An enhanced terminal processing unit E-UE, configured to receive encapsulated data of one or more standards sent by the backhaul network;

a data processing unit DPU, configured to perform decapsulation processing on the encapsulated data of one or more standards received by the E-UE;

The function integration unit IFU is configured to send data of one or more standards decapsulated by the DPU to an access point of the corresponding system, so that the access point of the corresponding standard forwards the data to the terminal device.

Compared with the prior art, the embodiment of the invention has the following advantages:

By applying the technical solution of the embodiment of the present invention, a clear multi-standard data communication mechanism and a data processing mechanism in the on-board processing module are established between the on-board processing module and the backhaul network and the access points in the vehicle compartment, thereby In the high-speed communication scenario, multi-standard data transmission is realized through a unified on-board processing module, which improves the stability of data transmission, and does not need to add a large number of corresponding hardware input and transformation for multi-standard data transmission, saving corresponding The cost of the investment, the processing mechanism and design complexity.

DRAWINGS

1 is a schematic structural view of a public network coverage mode in the prior art;

2 is a schematic structural diagram of a coverage method of an in-vehicle system in the prior art;

3 is a schematic flowchart of a method for implementing high-speed mobile communication according to an embodiment of the present invention; FIG. 4 is a schematic flowchart of a method for implementing high-speed mobile communication according to an embodiment of the present invention; A schematic structural diagram of an in-vehicle processing module;

FIG. 6 is a schematic implementation diagram of high-speed mobile communication in a specific application scenario according to an embodiment of the present invention; Schematic view

FIG. 7 is a schematic flowchart of a method for implementing high-speed mobile communication in a specific application scenario according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an in-vehicle processing module according to an embodiment of the present invention.

detailed description

As described in the background, in a high-speed mobile communication scenario, since the terminal device actually participating in the data transmission may belong to a network of different standards, in order to realize transmission of network data of various standards, in a peripheral scene of high-speed movement The network facilities that need to be matched to establish various standards are large in investment and involve high complexity.

Therefore, in the prior art solution, there is a lack of a data communication solution that is less invested and compatible with a plurality of types of networks. In order to solve such problems, the present invention proposes a corresponding architecture based on the overall architecture of the existing in-vehicle system coverage mode. Data transmission scheme.

As shown in FIG. 3, it is a schematic flowchart of a method for implementing high-speed mobile communication according to an embodiment of the present invention, where the method specifically includes the following steps:

Step S301: Receive data of one or more standards after encapsulation sent by the backhaul network.

In an actual application scenario, the data received in this step may specifically include the following forms:

(1) Data of one or more systems separately packaged according to different standards, the data carrying corresponding user identifiers and service identifiers.

(2) Data of one or more standards uniformly encapsulated, the data carrying a corresponding standard identifier, a user identifier, and a service identifier.

(3) Data of one or more standards separately packaged according to different services, the data carrying a corresponding user identifier and a standard identifier.

It should be noted that, in any of the above forms, the most important purpose is to describe the information of the system, the user, and the service type corresponding to the data, where the standard and the service type can be encapsulated. Therefore, the data of different systems or different services can be differentiated by the scope of the encapsulated data, and can also be distinguished by adding an identifier, and the data corresponding to different users is only differentiated by adding an identifier, and the specific application Which of the above forms can be adjusted according to actual needs, such changes do not affect the scope of protection of the present invention.

Further, the foregoing encapsulation process may be classified into the following two cases according to differences in implementation entities: the data received in this step may be specifically:

Data of one or more standards encapsulated by the base station of the backhaul network and sent by the backhaul network; or

One or more types of data encapsulated by the gateway node of the backhaul network sent by the backhaul network.

The difference in the choice of the specific implementation subject does not affect the scope of protection of the present invention.

Step S302: Perform decapsulation processing on the encapsulated data of one or more standards. In a specific implementation scenario, the content of the decapsulation process performed in this step is set according to the function of the access point in the specific system, and may be specifically classified into the following two cases:

Case 1: When the access point only implements the function of the RRU (Radio Remote Unit), the encapsulated one or more types of data are completely decapsulated.

Case 2: When the access point simultaneously implements the function of the RRU, the encapsulated one or more types of data are subjected to standard parsing processing.

Step S303: Send the decapsulated data of one or more standards to the access point of the corresponding system, so that the access point of the corresponding standard forwards the data to the terminal device.

Corresponding to the two cases in step S303, after the data is sent to the access point in this step, the processing in the access point also includes two cases:

Case 1: When the access point only implements the function of the RRU, the access point directly sends the completely decapsulated data to the corresponding terminal device.

Case 2: When the access point implements both RRU and BBU (Base Band Unit) In the function of the unit, the access point performs the service analysis processing and the user analysis processing on the data after the system analysis processing, and transmits the data that completes the service analysis processing and the user analysis processing to the corresponding terminal device.

The foregoing process illustrates the processing manner in which the data is sent from the backhaul network to the access point in the downlink direction. In an actual application, the processing procedure for the uplink direction that the access point sends to the backhaul network can also be implemented based on a similar processing concept. As shown in FIG. 4, the specific processing flow is as follows: Step S401: Receive data sent by an access point of one or more standards.

In this step, corresponding to the specific function settings of the access point, the received data is divided into the following two cases:

Case 1: When the access point only implements the function of the RRU, the data of the corresponding standard of the unencapsulated processing sent by the access point of the one or more standards is received.

Case 2: When the access point implements the functions of the RRU and the BBU at the same time, receiving the data of the corresponding system for completing the service information encapsulation process and the user information encapsulation process sent by the access point of the one or more standards.

Step S402: Perform unified encapsulation on the received data.

Corresponding to the two cases in step S401, after receiving data in this step, the specific data processing process also includes two cases:

Case 1: When the access point only implements the function of the RRU, the received data is uniformly encapsulated completely.

Case 2: When the access point implements the functions of the RRU and the BBU at the same time, the received data of the corresponding service information encapsulation processing and the user information encapsulation processing are unified and sealed.

Step S403: Send the uniformly encapsulated data to the backhaul network, so that the backhaul network decapsulates the uniformly encapsulated data into data of different standards, and sends the data to a network device of a corresponding standard. Further, the decapsulation process is performed according to the difference of the implementation body. In this step, the base station that sends data to the backhaul network decapsulates the uniformly encapsulated data into data of different standards, and sends the data to a network device of a corresponding standard. ; or,

The gateway node of the backhaul network decapsulates the uniformly encapsulated data into data of different standards and sends the data to a network device of a corresponding standard.

In the actual application scenario, the above-mentioned processing method of encapsulation and decapsulation can also be replaced by establishing a corresponding bearer channel, so that the above technical process can also be implemented, and the above-mentioned different functions of the bearer channel itself are no longer needed. The encapsulation and decapsulation process flows, but all belong to the technical means adopted to distinguish data of different standards or services, and such changes do not affect the scope of protection of the present invention.

The technical solutions proposed in the embodiments of the present invention are described below in conjunction with specific application scenarios. The embodiment of the present invention provides a specific design scheme based on the overall architecture in the in-vehicle system coverage mode shown in FIG. 2, and proposes a corresponding technical processing flow based on the structure. A data transmission solution in high-speed mobile scenarios.

As shown in FIG. 5, it is a schematic structural diagram of an in-vehicle processing module according to an embodiment of the present invention, which specifically includes:

E-UE (Evolved User Equipment), responsible for wireless connection over the air Port (Uu port) Data transmission with bakchual network equipment.

The IFU (Integrated Function Unit) integrates different functional processing units according to actual needs and completes the corresponding processing functions.

The DPU (Data Processing Unit) is responsible for the specific processing of the data from the backhaul network and the in-car AP, and specifically includes distributing the data from the backhaul network to the corresponding AP, and the AP sends the data to the terminal, and the The data of the AP is packaged and encapsulated, and sent to the backhaul network through the E-UE.

In the design scheme provided by the embodiment of the present invention, the function positioning of the E-UE and the DPU is clear, and the function of the IFU can be comprehensively considered with the standard and implementation manner of the AP, and the flexible design is realized.

The following takes an LTE AP as an example.

In an LTE system, a base station device (eNB) is usually composed of two core processing units, which are a baseband processing unit and a radio frequency processing unit, respectively. The main function of the BBU is to implement data encapsulation, scheduling, modulation and demodulation, and codec. The main function of the RRU is to transmit and receive RF signals through the antenna. Data and information exchange between the BBU and the RRU through the Ir interface. When considering the IFU function and LTE AP function partitioning, there are two basic implementation schemes, as shown in Figure 6.

In scheme 1, the AP only implements the RRU function. The BBU function is implemented by the IFU of the in-vehicle processing module, and the AP and the IFU communicate through the Ir interface.

In scheme 2, the AP implements the functions of the BBU and the RRU at the same time, and the IFU of the in-vehicle processing module implements the protocol function of the X2 interface, and the AP communicates with the IFU through the X2 interface.

The function division of each module under the two schemes is shown in Table 1.

Table 1 Module function division in scenario 1 and scenario 2 Option 1 Option 2

The E-UE realizes the data transmission and reception between the implementation and the backhaul network, and realizes the transmission and reception with the DPU unit to realize the data interaction between the data and the DFU unit. Interaction.

The IFU implements the BBU function, that is, implements scheduling, implements the X2 interface communication protocol, and implements data interaction with user-level data encapsulation and decapsulation, and number DPU.

According to codec and other functions, implemented with DFU

Data interaction between.

The DPU decomposes the downlink data from the E-UE to the downlink data from the E-UE, and analyzes the downlink data service by the subordinate AP, and delivers the downlink downlink data served by the subordinate AP to the IFU for processing; the data is submitted to the IFU. Processing; For the uplink data from the IFU from the IFU, the processed uplink data is processed and sent by the E-UE through the E-UE. give away.

Supports encapsulation of multiple formats of data and encapsulation and decapsulation of multiple formats.

The AP implements the RRU function and completes the in-vehicle terminal to implement complete eNB functions, including scheduling, data transmission and reception, and no data processing. User-level data encapsulation and decapsulation, data encoding and decoding, and data transmission and reception. In the foregoing solution 2, the communication between the IFU and the AP by using the X2 interface is only a possible way, and other standard interfaces or new interface standards may be used.

FIG. 7 is a schematic flowchart of a method for implementing high-speed mobile communication according to an embodiment of the present invention, where the method specifically includes the following steps:

Step S701: The backhaul network encapsulates data from an external network (the core network corresponding to various standards).

The method of encapsulation includes multiple methods as in step S301, and the main ones are as follows:

(1) Encapsulate data of various standards separately, and add user identification and service identification respectively to distinguish different services of different users.

(2) uniformly encapsulate data of different standards, and add standard identification, user identification and business standard Knowledge, distinguish the business of each user under different standards.

(3) Encapsulation according to the type of service, adding a standard identifier and a user identifier to distinguish different users in different formats

The function of data encapsulation can be completed by the base station equipment of the backhaul network, and the gateway node can be added to be responsible for the encapsulation and decapsulation functions of data.

After the data is encapsulated, the backhaul network sends the data to the in-vehicle processing module.

Step S702: The E-UE of the in-vehicle processing module is responsible for receiving data sent by the backhaul network, and the DPU decapsulates the data, and sends the data to the corresponding AP through the IFU module.

It should be noted that the functions implemented by the IFU are different, and the manner in which the data is sent to the AP is different. The above LTE AP standard is still taken as an example. If the AP only implements the RRU function, the DPU will completely decapsulate the data, and The service data of each user is sent to the AP, and the AP sends the data directly to the terminal without further processing. If the AP implements the BBU and RRU functions at the same time, the DPU only needs to parse the data of the LTE system without having to go to the deep user/ After the service information is parsed, after the data is sent to the AP, the AP completes the user and service level resolution and sends the data to the corresponding user.

Step S703: Each AP sends the received data to the user.

Correspondingly, the uplink data transmission process is also divided into three steps, as described below.

Step S704: Each AP of the standard system sends the received uplink data to the in-vehicle processing module.

In this step, if the AP only implements the RRU function, it does not perform additional processing on the data, and is only responsible for receiving and forwarding. If the AP implements the RRU function at the same time, the user and service level data are encapsulated at the same time, and the encapsulated data is encapsulated. Send to the onboard processing module.

Step S705: The DPU of the in-vehicle processing module is responsible for uniformly encapsulating user data of various standards received, and the encapsulation manner is similar to step 2 in the downlink data receiving process. After the encapsulation is completed, the data is sent to the backhaul network through the E-UE.

Step S706: The backhaul network decapsulates the received data, and sends data of each standard to the corresponding core network node. It should be pointed out that the data encapsulation and decapsulation process is a possible way for data communication between nodes. Another common way is to establish a bearer channel, and the channel itself has an identification function without adding an additional identifier to the data packet. However, the essence is not different from the direct addition of the identifier in the data packet, and such a change does not affect the scope of protection of the present invention.

In order to implement the technical solution of the embodiment of the present invention, an embodiment of the present invention further provides an in-vehicle processing module, and a schematic structural diagram thereof is shown in FIG.

The E-UE 81 is configured to receive the encapsulated data of one or more standards sent by the backhaul network, and the DPU 82 is configured to decapsulate the encapsulated data of one or more standards received by the E-UE 81 deal with;

The IFU 83 is configured to send data of one or more standards after the DPU 82 is decapsulated to a corresponding access point, so that the access point of the corresponding system forwards the data to the terminal device.

The DPU 82 is specifically configured to:

When the access point only implements the function of the RRU, performing complete decapsulation processing on the encapsulated data of one or more standards;

When the access point implements the functions of the RRU and the BBU at the same time, the encapsulated one or more types of data are subjected to standard parsing processing.

further,

The IFU 83 is further configured to receive data sent by one or more access points of the standard; The DPU 82 is further configured to uniformly encapsulate the data received by the IFU 83, and the E-UE 81 is further configured to send the uniformly encapsulated data to the backhaul network, so that the backhaul network The uniformly encapsulated data is decapsulated into data of different standards and sent to the network device of the corresponding standard.

The IFU83 is specifically configured to:

When the access point only implements the function of the RRU, receiving the data of the corresponding standard of the unencapsulated processing sent by the access point of the one or more standards;

When the access point implements the functions of the RRU and the BBU at the same time, the data of the corresponding system for completing the service information encapsulation process and the user information encapsulation process sent by the access point of the one or more standards is received.

It should be noted that the DPU 82 is specifically configured to:

When the access point only implements the function of the RRU, the received data is uniformly and completely encapsulated;

When the access point implements the functions of the RRU and the BBU at the same time, the received data of the corresponding service information encapsulation processing and the user information encapsulation processing are unified and encapsulated.

Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments of the present invention may be implemented by hardware, or may be implemented by means of software plus a necessary general hardware platform. Based on the understanding, the technical solution of the embodiment of the present invention can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or The network device or the like performs the method described in each implementation scenario of the embodiment of the present invention.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily required to implement the embodiments of the present invention.

Those skilled in the art can understand that the modules in the device in the implementation scenario may be distributed in the device for implementing the scenario according to the implementation scenario description, or may be correspondingly changed in one or more devices different from the implementation scenario. The modules of the above implementation scenarios can be combined into one module, or can be further split into multiple sub-modules.

The serial numbers of the foregoing embodiments of the present invention are merely for description, and do not represent the advantages and disadvantages of the implementation scenarios. It is not limited thereto, and any changes that can be made by those skilled in the art should fall within the scope of the business restrictions of the embodiments of the present invention.

Claims

Rights request

A method for implementing high-speed mobile communication, comprising:

Receiving encapsulated data of one or more standards sent by the backhaul network;

The method according to claim 1, wherein the data of the encapsulated one or more formats specifically includes:

Data of one or more standards respectively encapsulated according to different standards, the data carrying corresponding user identifiers and service identifiers; or;

Uniformly encapsulating one or more types of data, the data carrying a corresponding standard identifier, a user identifier, and a service identifier; or

The data carries one or more types of data respectively encapsulated by different services, and the data carries corresponding user identifiers and standard identifiers.

3. The method according to claim 1, wherein the data of one or more of the encapsulated data sent by the backhaul network is specifically:

The method according to claim 1, wherein the decapsulating the data of the one or more types of the encapsulated data comprises:

When the access point only implements the function of the radio remote unit RRU, completely decapsulating the encapsulated data of one or more standards;

When the access point implements the functions of the RRU and the baseband processing unit BBU at the same time, the package is

The method of claim 4, after the sending the decapsulated data of the one or more standards to the access point of the corresponding system, the method further includes:

When the access point only implements the function of the RRU, the access point directly sends the completely decapsulated data to the corresponding terminal device;

When the access point implements the functions of the RRU and the BBU at the same time, the access point performs the service parsing process and the user parsing process on the data parsed by the system, and sends the data of the service parsing process and the user parsing process to the data. The corresponding terminal device.

6. The method of claim 1, further comprising:

Receiving data transmitted by one or more access points;

The received data is uniformly encapsulated;

And sending the uniformly encapsulated data to the backhaul network, so that the backhaul network decapsulates the uniformly encapsulated data into data of different standards, and sends the data to a network device of a corresponding standard.

The method of claim 6, wherein the receiving the data sent by the access point of the one or more systems comprises:

The method of claim 7, wherein the uniformly encapsulating the received data comprises:

When the access point implements the functions of the RRU and the BBU at the same time, the completed service information will be received. The data of the corresponding standard of the package processing and the user information encapsulation processing is subjected to a unified standard package processing.

The method according to claim 6, wherein after the uniformly encapsulated data is sent to the backhaul network, the method specifically includes:

The base station of the backhaul network decapsulates the uniformly encapsulated data into data of different standards and sends the data to a network device of a corresponding standard; or

10. An in-vehicle processing module, comprising:

The on-board processing module according to claim 10, wherein the DPU is specifically configured to:

12. The onboard processing module of claim 11 wherein:

The IFU is further configured to receive data sent by an access point of one or more standards;

The DPU is further configured to uniformly encapsulate the data received by the IFU;

The E-UE is further configured to send the uniformly encapsulated data to the backhaul network, so that the backhaul network decapsulates the uniformly encapsulated data into data of different standards, and sends the data to the phase Should be a standard network device.

The on-board processing module according to claim 12, wherein the IFU is specifically used for:

The on-board processing module according to claim 13, wherein the DPU is specifically configured to: