WO2006012787A1

WO2006012787A1 - A terminal data simulation method and mobile terminal data source simulation method

Info

Publication number: WO2006012787A1
Application number: PCT/CN2005/001079
Authority: WO
Inventors: Jianfeng Wang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2004-07-31
Filing date: 2005-07-20
Publication date: 2006-02-09
Also published as: CN1728656A; CN100396019C

Abstract

The invention relates to the concerned performance testing with respect to the mobile communication system based on IP technology, discloses a terminal data simulation method and mobile terminal data source simulation method, as so to only one computer may simulate plurality of the network devices, greatly reduces the number of computer in the mobile communication system testing and during UE cooperating to produce testing data. The invention set IP and MAC address to simulate Ethernet packets of the multi-network devices, organizes said Ethernet packets as the portion or the whole of one possible snapshot of the buffer of Ethernet devices with storage-transferring manner, then loading the simulated data into the buffer of Ethernet devices, transmits said data packets by the Ethernet devices.

Description

Terminal data simulation method and mobile terminal data source simulation method

The present invention relates to the technical field of performing related performance testing on a mobile communication system based on the Internet Protocol (IP) technology, and particularly relates to a simulation method for testing terminal data or a data source.

Background technique

With the development and penetration of mobile communication technologies and IP technologies, the Wideband Code Dimensional Access (WCDMA) mobile communication system such as the 3rd generation mobile communication technology standard is in its The mobile communication network technology solution based on IP technology has been defined in the R4/R5 version specification.

Nowadays, the internal LAN of the enterprise generally uses an IP-based network. If two computers need to communicate in such a LAN, the message sender only needs to encapsulate the message into an IP packet, and then encapsulate the packet into an Ethernet packet, and then Ethernet packets are placed on the LAN and Ethernet packets are automatically routed to the destination computer.

When performing relevant performance tests on the mobile communication system, for example, testing the service stability of WCDMA and its handover performance, it is required to be a mobile user equipment (User Equipment, referred to as "UE") side and a WCDMA network side in the mobile communication system. A large number of real data packets are provided on the wireless link to test the access capability of the mobile communication system, the stability of the service, and the handover performance of the UE and the transmission capability of the data link.

The prior art generally uses a file transfer protocol (Fi le Transfer Protocol)

"FTP") class tool to simulate the data source of the UE. Usually, each computer can only provide data to one UE through an FTP class tool. Specifically, the UE is connected to a local area network by wire or wirelessly, and each UE provides an uplink data source for communicating with the network side through a computer in the local area network, and then the network side is generated by the uplink data source. Corresponding downlink data, so that a sufficient amount of data can be obtained on the wireless link between the UE and the network side to achieve the purpose of testing the access and handover performance of the mobile communication system.

Since the LAN can only provide a data source for one UE through one computer, this greatly limits the scope of the mobile communication system to be tested and the objectives to be achieved by the test. which is The prior art uses some software such as netwizard or sniffer that implements packet capture and real-time monitoring, and uses some cumbersome techniques to make a computer provide data sources for testing for multiple UEs, and still needs to be in this platform. Open multiple applications such as netwizard or sniffer on the computer, so that computer resources will consume a lot of money, so high requirements are put forward for objective test.

At the same time, in the prior art, the above-mentioned test requirements for access to the mobile communication system, handover performance, service transmission capability, and the like can be implemented by some dedicated hardware devices.

In practical applications, the above solutions have the following problems: First, in addition to using high-cost dedicated hardware devices to complete testing in the prior art, all other existing solutions will consume more computer resources, and at the same time The objective conditions of the laboratory space put forward more requirements. More importantly, it is difficult to provide data for multiple UEs at the same time. In addition, in the prior art, multiple applications are required to implement terminal data simulation, which is relatively complicated to implement; Some software used in the prior art to implement packet capture and real-time monitoring, such as netwizard or sniffer, cannot be applied to asymmetric services with large uplink data bandwidth and small downlink data bandwidth, which limits the actual test range of the system.

Summary of the invention

The main object of the present invention is to provide a simple terminal data simulation method and a data source simulation method for a mobile terminal, so that a computer can simulate multiple network devices and greatly reduce the test of the mobile communication system. The number of computers that the UE cooperates with to generate test data.

In order to achieve the above object, the present invention provides a method for simulating a terminal data, including: A: generating, on a first device, a data block including at least one data packet, where the data packet is a data packet that can be identified by the storage and forwarding device;

B loading the data block into a store-and-forward buffer of the store-and-forward device;

The storage and forwarding device is an Ethernet device, and the data packet is an Ethernet data packet. The source network interconnection protocol address of the Ethernet packet in the data block is an internetwork interconnection protocol address of the device that is to be simulated, and The source media access control address of the Ethernet packet in the data block is a valid media access control address in the local area network where the first device is located.

The device that is desired to be simulated may be a virtual device.

The device to be simulated may be any one of a mobile terminal, a computer, and a personal digital assistant in the mobile communication system.

The Ethernet device is any one of a router, a hub, and an Ethernet switch. The present invention also provides a data source simulation method for a mobile terminal in a mobile communication system, comprising: D. generating a data file including a plurality of Ethernet data packets on a computer connected to the Ethernet device;

E. Loading content in the data file into a link layer buffer of the Ethernet device;

F. The Ethernet device sends the Ethernet packet in the buffer area to the network side of the mobile communication system through a plurality of mobile terminals connected thereto.

The destination media access control address of each Ethernet data packet in the data file is a media access control address of the mobile terminal; and

The destination internetwork protocol address of each Ethernet data packet in the data file is the internetwork protocol address of the network side computer of the mobile communication system, and the source network interconnection protocol address of the Ethernet data packet may be different.

The Ethernet device is any one of a router, a hub, and a switch.

When the symmetric service data source is simulated, the data of the internetwork protocol packet included in the Ethernet packet is an Internet Control Message Protocol message, and the Internet Control Message Protocol packet of type code 0x0800.

When the pure uplink service data source is simulated, the data of the internetwork protocol packet included in the Ethernet packet is an Internet Control Message Protocol message, and the Internet Control Message Protocol packet whose type code value is 0x0000.

Moreover, when simulating a pure uplink service data source, the data check field of the internetwork protocol packet in the Ethernet packet is filled in as an error value.

By comparison, it can be found that the technical solution of the present invention is different from the prior art in that the present invention simulates an Ethernet packet of a plurality of network devices by setting an IP and a MAC address on a computer. Organizing these Ethernet packets into part or all of a possible snapshot of the cache of the Ethernet device with the packet store-and-forward function, and then loading the simulated data into the cache of the Ethernet device, and transmitting the data packets through the Ethernet device . With a single computer that is designed to connect to multiple UEs, the data source simulation of the UE can be done with a much smaller number of computers.

The difference in the technical solution brings about a more obvious beneficial effect, that is, on the one hand, the data source can be simulated for multiple UEs simultaneously by only the computer and the Ethernet device, which saves the device resources compared with the prior art. , reducing the test environment space. On the other hand, the solution of the present invention reduces the repetitive operation, effectively filling the wireless links of multiple UEs and the network side with data by one or a few computers and one Ethernet device, compared with the existing In terms of technology, it is more conducive to automating test of mobile communication systems. The inventive solution can be used in practical applications for system performance testing of communication terminal data sources in a mobile communication system.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic structural diagram of a data source simulation method of a communication terminal according to an embodiment of the present invention;

1 is a diagram showing a data format of a data block pre-generated in a computer according to an embodiment of the present invention;

Fig. 3 is a flow chart showing the simulation of a mobile communication terminal data source in a mobile communication system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail with reference to the accompanying drawings.

In a typical network, there are a store-and-forward device, a terminal device, and a network processing device (a core device, such as a server). The storage area and the forwarding area of the storage and forwarding device generally also share an area. Generally, the storage and forwarding device functions as a cache device, and the data packets sent by the terminal device to the destination device are temporarily stored and forwarded to the corresponding destination device in time. Therefore, to simulate enough data sent by the terminal, as long as enough data packets are sent and loaded into the store-and-forward buffer and forwarding buffer of the store-and-forward device in the name of the terminal, it can be simulated. The data sent by the terminal. Therefore, the present invention only needs to generate a data block including one or more data packets on one device of the network, the size of the data block, that is, the number of data packets from the required number Depending on the number of packets, as long as the store-and-forward device can identify the data packet, the data block containing the data packet can be loaded into the store-and-forward buffer area of the store-and-forward device. . The solution of the present invention is to pre-frame the data frame format in the buffer area according to the data packet storage and forwarding capability of the Ethernet storage and forwarding device in a device such as a computer, that is, to construct the Ethernet storage and forwarding. The data packet that the device can identify, and the pre-composed data frame is loaded into the buffer area of the Ethernet storage and forwarding device by the computer device and forwarded, so that the wireless link on the UE and the test network side is filled with data, The purpose of testing the performance of a communication system in a mobile communication system.

Specifically, the present invention is effective for performing data simulation on a terminal at any network level. Taking the terminal data simulation of Ethernet as an example, the solution of the present invention is directed to a specific Ethernet device having a store-and-forward function, according to its chain. The data frame format in the path buffer area pre-generates a data block containing a plurality of Ethernet data packets in the computer, and the source IP address of each Ethernet data packet in the data block is according to the IP address of the computer that is desired to be simulated. For setting, the destination IP address is the IP of the core network (Core Net, referred to as "CN") on the network side, and the destination MAC address of each Ethernet packet in the Ethernet packet data block is the MAC of the UE that the packet wants to serve. The address is then placed in the buffer of the Ethernet device and forwarded out. The Ethernet device sends these Ethernet packets to its destination MAC address, and the UE sends the destination IP address of these Ethernet packets along the uplink wireless link to the computer on the CN side. The CN side computer will feedback. The Ethernet packet is sent to the UE along the downlink radio link, and the UE forwards it to the corresponding computer (the computer indicated by the source IP address of the upstream Ethernet packet). Thereby, the radio link between the UE and the network side can be filled with data, thereby achieving the purpose of testing the access capability and handover performance of the mobile communication system and the ability to transmit service data to the mobile communication system. Those skilled in the art of the invention will appreciate that in the solution described above, the UE actually functions as a gateway.

Fig. 1 is a block diagram showing the structure of a data source emulation method of a communication terminal according to an embodiment of the present invention.

As shown in FIG. 1, the present invention provides a data source for the UE 30 via a computer 10 and a local area network 20 and an Ethernet device 21 therein. The Ethernet device 21 is used in the local area network 20. Any one of a router, a hub, and a switch that implements a switching function, and the UE 30 is a mobile terminal in a mobile communication system or any of a computer, a personal digital assistant ("PDA"). One.

A communication terminal data simulation method of an embodiment of the present invention will be described in detail below with reference to FIG.

First, for the Ethernet device 21 having the packet store-and-forward function, a data block including at least one Ethernet packet is generated in the computer 10 according to the Ethernet packet format in the buffer area, and the data block is a cache of the Ethernet device. Part or all of a possible snapshot, the source IP address of the Ethernet packet in the data block may be the IP address of the device to be simulated, and the destination address is the IP of the destination device (if the packet passes the UE to the computer on the CN side) Then, the destination IP is a computer on the CN side, and the destination Medium Access Control (MAC) address should be set to the MAC address of the UE 30, and the source MAC address is a valid MAC address in the local area network where the computer 10 is located. The valid MAC address referred to herein may be the MAC address of the computer 10 or the MAC address of other working network devices (including network terminals) in the local area network where the computer 10 is located.

It should be noted that the data block pre-generated in the Ethernet packet format in the buffer area of the Ethernet device 21 in the computer 10 is a cap file of the format cap, as shown in FIG. 2. Figure 2 illustrates the data format of a data block pre-generated in a computer in accordance with one embodiment of the present invention. As shown in (1) of Fig. 2, the data blocks generated in the computer 10 are combined by at least one Ethernet packet. Each Ethernet packet contains the destination address to which the packet needs to be sent, the source address, and the type of the Ethernet packet and the IP packet portion. The data format is as shown in Figure 1.

(2) shown. The data format of the IP packet part of this Ethernet packet is as shown in Figure 1.

(3) shows the IP header and the data part, and the data part is composed of the Internet Control Message Protocol ("I CMP") header and the ICMP content. , as shown in (4) of Figure 2. The type code of the ICMP protocol is included in the ICMP header.

The data portion of each Ethernet packet is a complete and correct IP packet. The IP header in the IP packet contains the source IP address and the destination IP address. The source IP address in the IP packet refers to the IP address of the sender that wants to simulate the sending of the data packet. The sender may actually exist or It is virtual. The destination IP address in the IP packet is the IP address of the destination network device to which the packet is to be sent.

Since the terminal data source in the communication system is to be simulated, a plurality of Ethernet packets pre-generated in the computer 10 need to be provided to the UE 30 as the data source of the UE 30. Therefore, the destination MAC address is set to the IP address of the UE 30 in the pre-generated Ethernet packets, so that these Ethernet packets can be transmitted to the UE 30. Also, the source IP address of the Ethernet packet in the data block should be set to the IP address of the device that you want to simulate, in order to achieve the purpose of the simulation. It is important to note that the MAC address of the Ethernet packet pre-generated in the computer 10 needs to be set to the valid MAC address in the local area network where the computer 10 is located, because it is necessary to ensure that these Ethernet packets are loaded into the subsequent steps. The buffering of the Ethernet device 21 in the local area network 20 does not cause an abnormality and an error.

Next, the computer 10 loads the generated data block containing at least one Ethernet packet into the link layer buffer of the Ethernet device 21. In a preferred embodiment of the present invention, the process of loading the data block of the cap file format into the link layer buffer of the Ethernet device 21 can be implemented by off-the-shelf software such as netwizard or sniffer. It is important to note that the loading mentioned here places the data block directly into the link layer buffer area of the Ethernet device 21, instead of being conventionally packaged by the multi-layer protocol and sent to the Ethernet device 21.

Subsequently, the Ethernet device 21 forwards each Ethernet packet in the data block in its buffer area through the UE 30 that is wired or wirelessly connected thereto.

The network structure of the data source simulation method of the communication terminal related to the present invention and the data format of the data block generated in advance in the computer in the present invention are described above, and the data source simulation method of the communication terminal of the present invention is in the mobile communication system. Specific Application Hereinafter, a specific flow of data source simulation of the mobile communication terminal in the mobile communication system according to an embodiment of the present invention will be described in detail with reference to FIG.

First, in step 300, for the Ethernet device 21 having the packet store-and-forward function, a data file containing a plurality of Ethernet packets is generated in one computer according to the Ethernet packet format in the buffer area, and the data file is also The data format of the cap file shown in Figure 2 is identical. It is worth mentioning that the computer for generating a data file in the application example of the data source simulation of the mobile communication terminal in the mobile communication system refers to the computer 10 mentioned above. Number According to the source IP address of the Ethernet packet in the file, it may be the IP address of the computer that you want to simulate, and the source IP address of the Ethernet packet may be different. Its destination MAC address is set to the MAC address of one of the multiple UEs. The source MAC address is the MAC address of this computer. What needs to be specially explained here is that the ICMP protocol data content filled in the data segment of the IP packet in the Ethernet packet, when the analog symmetric service data source needs to be simulated, the type code value included in the Ethernet packet should be set to 0x0800. ICMP packet, after the packet is uplinked along the wireless link to the destination mobile communication network side, the server on the network side will return a packet of the same size, and the response packet is sent back to the UE along the wireless link and then sent by the UE. The upper local area network 20 is then received or dies due to exceeding its life cycle on the link. In this way, the wireless links of multiple UEs can be successfully filled with data packets. If you need to simulate a pure uplink service data source, the Ethernet packet should contain an ICMP packet with a type code value of 0x0000, or fill in the IP packet header check field in the Ethernet packet as an error value, so that the Ethernet packet arrives. The server on the destination network side is thrown away. At the same time, it is also possible to combine the above two methods to realize uplink, large, downlink and small services. It should be noted that if the simulation method proposed by the present invention is not used, each UE needs to be configured with one computer. In order to use multiple UEs for testing, multiple computers need to be configured. Instead of using the method of the present invention, a computer and an Ethernet device (e.g., HUB) can be used to replace the original plurality of computers.

Subsequently, in the next step 310, the contents of the data file are loaded into the link layer buffer of the Ethernet device 21 by this computer. As mentioned above, this loading process can be directly loaded via the existing software netwizard or sniffer without encapsulation of multi-layer protocols. Then, proceed to step 320.

At step 320, the Ethernet device 21 then transmits the Ethernet packet in its buffer to the network side of the mobile communication system through a plurality of UEs connected thereto in a wired or wireless manner. Here, a plurality of Ethernets in the data file of the cap file format can be forwarded to the network side by a plurality of UEs in a file file format by a computer and the Ethernet device 21. Unlike the prior art, the solution of the present invention can be The forwarding of multiple Ethernet packets to the mobile communication network side can be achieved by one computer and one Ethernet device 21 in one operation. Then, proceed to step 330.

At step 330, the network side performs the corresponding operation based on the type of the type code value in the received Ethernet packet. If the type code value in the Ethernet packet is an ICMP packet of 0x0800, then the corresponding server on the network side will return a packet of the same size, and the data packet of these responses After the wireless link is downlinked to the mobile terminal and then retransmitted to the local area network 20, the wireless link of multiple UEs can be filled with data packets through the above scheme; if the type code value of the Ethernet packet is 0x0000 The ICMP packet, or the content of the IP packet header check field in the Ethernet packet is found to be an error value, and the corresponding server on the network side will throw it away after receiving such an Ethernet packet. In summary, with the above method of the present invention, multiple UEs and the wireless link on the network side can be filled with data packets, thereby achieving the purpose of testing the access capability, handover performance, and service transmission capability of the mobile communication system. .

Although the present invention has been illustrated and described with reference to the preferred embodiments of the present invention, those skilled in the art The spirit and scope of the invention is defined by the appended claims.

Claims

Rights request

A terminal data simulation method, comprising:

A. generating, on the first device, a data block including at least one data packet, where the data packet is a data packet that can be identified by the storage and forwarding device;

B loading the data block into a store-and-forward buffer of the store-and-forward device; ' i , ' ^ί '' , ' .

The terminal data emulation method according to claim 1, wherein the storage and forwarding device is an Ethernet device, and the data packet is an Ethernet data packet.

The terminal data emulation method according to claim 2, wherein the source network interconnection protocol address of the Ethernet packet in the data block is an inter-network interconnection protocol address of the device to be simulated, and

The source media access control address of the Ethernet packet in the data block is a valid media access control address in the local area network where the first device is located.

4. The terminal data simulation method according to claim 3, wherein the device that is desired to be simulated is a virtual device.

The terminal data emulation method according to claim 3, wherein the device for the simulation is any one of a mobile terminal, a computer, and a personal digital assistant in the mobile communication system.

The terminal data emulation method according to claim 2, wherein the Ethernet device is any one of a router, a hub, and an Ethernet switch.

A data source simulation method for a mobile terminal in a mobile communication system, characterized in that it comprises:

D. Generate a data file containing a plurality of Ethernet packets on a computer connected to the Ethernet device;

8. The mobile terminal data source emulation method in a mobile communication system according to claim 7, wherein the destination media access control address of each Ethernet data packet in the data file is a media access control address of the mobile terminal. And,

9. The mobile terminal data source emulation method in a mobile communication system according to claim 7, wherein the Ethernet device is any one of a router, a hub, and a switch.

The method for simulating a data source of a mobile terminal in a mobile communication system according to claim 7, wherein the data of the inter-network interconnection protocol packet included in the Ethernet packet is an Internet Control Message Protocol message, and the type code thereof An Internet Control Message Protocol packet with a value of 0x0800.

The method for simulating a data source of a mobile terminal in a mobile communication system according to claim 7, wherein the data of the inter-network interconnection protocol packet included in the Ethernet packet is an Internet Control Message Protocol message, and the type code thereof An Internet Control Message Protocol packet with a value of 0x0000.

The data source simulation method for a mobile terminal in a mobile communication system according to claim 7, wherein the data check field of the internetwork protocol packet in the Ethernet packet is filled in as an error value.