TWI528762B - Method of a base station and apparatus for routing packet and routing packet transform system - Google Patents

Description

Base station packet routing method, packet routing device and packet routing conversion system

The present invention relates to a packet routing method for a base station, and more particularly to a method for forwarding packets through different network type interfaces in a long term evolution (LTE) technology of fourth generation (4G) wireless communication. Base station packet routing method, packet routing device and packet routing conversion system.

With the evolution of mobile communication technology, Long Term Evolution (LTE) has become one of the mainstream specifications of the fourth generation (4G) wireless communication technology, and LTE has higher bandwidth and data transmission speed than 3G mobile communication technology. However, since the spectrum used by 4G is mostly in the higher frequency band (for example, 1800 megahertz (MHz)), when the signal passes through obstacles (for example, walls, basements, etc.), it may cause severe signal attenuation. As a result, the quality of the reception and the speed of data transmission have dropped significantly. Therefore, when users move from indoors to indoors, they often need to switch the mobile communication network used by mobile devices (such as mobile phones, tablets, notebooks, etc.) to the Broadband IP Network in the indoor environment. Provided, for example, wireless Access (Wi-Fi) network service. The way of switching in this way will cause inconvenience in use and also reduce the user's experience quality. On the other hand, with the popularity of smart phones and the non-traffic-limited services provided by telecom operators, the amount of data in mobile communications has also grown exponentially. The huge amount of data will cause the base station's bandwidth load to increase greatly, and indirectly affect the bandwidth that users can use.

A femtocell base station is proposed to solve the above problems. It is suitable for small low-power base stations in indoor environments and operates in licensed wireless bands (for example, 800/900 for mobile communication). /1800/1900/2100MHz), and through the home broadband network (for example, digital subscriber line (DSL), cable modem (cable modem) to connect to the radio access network (radio access network; RAN ) and the core network.

However, in order to enable telecom operators or service providers to provide premium value-added services in existing 4G LTE telecommunications networks and to address the last mile problem between telecommunications networks and end-user devices, carriers Or the service provider may face the following problems. First, how to share the traffic load of the telecommunications core network. Second, how to make the mobile device enter the indoor environment without using the connection method to use the fixed network bandwidth. Third, how to make mobile devices supporting different wireless access networks communicate with each other. Fourth, how to change the mobile devices that allow the telecommunication networks on the same base station to communicate with each other to share the telecommunications core network resources. Therefore, it is necessary to provide a method for easily and efficiently sharing the resources of the telecommunications core network.

The invention provides a packet routing method, a packet routing device and a packet routing conversion system for a base station, which determine a network type interface for transmitting a packet by parsing a packet, thereby sharing the load of the telecommunication core network by an easy method.

The present invention proposes a packet routing method suitable for a base station comprising a plurality of network type interfaces, the method comprising the following steps. Receive the packet and obtain the destination address information of the packet. Next, the destination address information is compared with a routing list, wherein the routing list records several network types. Then, the packet is transmitted through the interface of the corresponding network type according to the comparison result.

In an embodiment of the present invention, the plurality of network types in the routing list respectively correspond to a routing target address, and comparing the destination address information with the routing list includes the following steps. The destination address information is compared with the route destination address corresponding to the network type. Then, when the destination address information conforms to one of the routing target addresses, the network type corresponding to the matching routing target address is determined.

In an embodiment of the present invention, the foregoing packet includes a universal packet wireless service tunneling protocol packet, and receiving the packet and obtaining the destination address information of the packet includes the following steps. Disassemble the generic packet wireless service tunneling protocol packet to obtain the header of the General Packet Radio Service Tunneling Protocol (GTP) packet. Next, the header is analyzed to obtain the destination address information.

In an embodiment of the invention, the transmitting the packet through the interface of one of the corresponding network types according to the comparison result comprises the following steps. Restore the header of the generic packet wireless service tunneling protocol packet. Then, via the corresponding network type One of the interfaces to deliver a universal packet wireless service tunneling protocol packet.

The invention provides a packet routing device, which comprises a storage unit, a communication unit and a processing unit. The storage unit is used to store the module. The communication unit includes several network type interfaces. The processing unit is coupled to the storage unit and the communication unit, and accesses the modules in the storage unit to perform the following steps. The communication unit is used to receive the packet and obtain the destination address information of the packet. Next, the destination address information is compared to a routing list, wherein the routing list records these network types. The communication unit is then used to transmit the packet through the corresponding network type interface based on the comparison result.

In an embodiment of the invention, the plurality of network types in the routing list respectively correspond to a routing target address, and the processing unit compares the destination address information with a routing target address corresponding to the network type respectively. And, when the destination address information conforms to one of the routing target addresses, the processing unit determines the network type corresponding to the matching routing target address.

In an embodiment of the invention, the packet includes a universal packet wireless service tunneling protocol packet, and the processing unit disassembles the universal packet wireless service tunneling protocol packet to obtain a header of the universal packet wireless service tunneling protocol packet, and analyzes the header To obtain the destination address information.

In an embodiment of the invention, the processing unit restores the header of the universal packet wireless service tunneling protocol packet and transmits the universal packet wireless service tunneling protocol packet via one of the corresponding network types.

The invention provides a packet routing conversion system, which comprises a user equipment (UE), a base station and a packet routing device. Set. The base station receives the packet transmitted by the user equipment. The packet routing device receives the packet from the user equipment via the base station, and obtains the destination address information of the packet, and the packet routing device compares the destination address information with the routing list, wherein the routing list records several network types and the packet The routing device transmits the packet through the interface of the corresponding network type according to the comparison result.

In an embodiment of the present invention, the plurality of network types in the routing list respectively correspond to a routing target address, and the packet routing device performs the destination address information corresponding to the destination address information and the network type respectively. When the destination address information meets one of the routing destination addresses, the packet routing device determines the network type corresponding to the matching routing target address.

In an embodiment of the present invention, the packet transmitted by the base station includes a universal packet wireless service tunneling protocol packet, and the packet routing device disassembles the general packet wireless service tunneling protocol packet to obtain a header of the universal packet wireless service tunneling protocol packet. And analyze the header to obtain the destination address information.

In an embodiment of the invention, the packet routing device restores the header of the universal packet wireless service tunneling protocol packet and transmits the universal packet wireless service tunneling protocol packet via one of the corresponding network types.

In an embodiment of the invention, the network type includes a local area network (LAN), a telecommunications core network, an Internet, and a telecommunications area network.

Based on the above, the packet routing method, the packet routing device, and the packet routing conversion system of the base station of the present invention determine the destination address information of the packet. The packet is transmitted through the corresponding network type interface. Thereby, the embodiment of the present invention can effectively share the load of the core network while providing a simpler way to communicate with other electronic devices.

The above described features and advantages of the invention will be apparent from the following description.

100, 310, 320, 900, 1110‧‧‧ User equipment

110, 151‧‧‧ communication unit

120, 153‧‧‧ storage unit

130, 155‧ ‧ processing unit

150, 1100‧‧‧ packet routing device

330, 820, 930, 1101‧‧‧ home base station

350‧‧‧Telecom core network

360‧‧‧Internet

370, 1130‧‧‧ electrical appliances

S410~S450, S610~S690, S710~S790, S811~S857, S911~S919, S951~S959, S1001~S1010‧‧

555, 1102‧‧‧ route judgment module

570‧‧‧ service gateway

580‧‧‧Remote device

940‧‧‧ instant messaging software server

1050, 1104‧‧‧ home appliance intermediary interface

1103‧‧‧WIFI module

1105‧‧‧ WAN port埠

1108, 1109‧‧‧Local Area Network埠

1 is a block diagram showing a packet routing conversion system in accordance with an embodiment of the present invention.

2 is a block diagram showing a user equipment according to an embodiment of the invention.

3A is a schematic diagram of a conventional long term evolution architecture.

FIG. 3B is a schematic diagram illustrating a long term evolution architecture in accordance with an embodiment of the present invention.

FIG. 4 is a flow chart illustrating a packet routing method according to an embodiment of the invention.

5A and 5B are diagrams illustrating a network transmission protocol in accordance with an embodiment of the present invention.

Figure 6 is a flow chart showing an example of checking destination address information.

7 is a flow chart of an example of user device pairing.

8 is a sequence diagram of a user equipment using an internet service.

9A and 9B are sequence diagrams of a user equipment using a telecommunications area network.

Figure 10 is a sequence diagram showing the connection of the user equipment to the appliance.

FIG. 11 is a schematic diagram showing the hardware integration of a packet routing device and a home base station according to an embodiment of the invention.

In the transmission of the Transmission Control Protocol/Internet Protocol (TCP/IP) architecture, the header of the packet carries the destination address information (for example, the destination IP address). Or the destination port (port), so that the packet can be transferred to the destination device (for example, a server, a notebook, a personal computer, etc.) according to the destination address information during the process of forwarding through the plurality of routers. Accordingly, in the embodiment of the present invention, the packet transmitted by the user equipment (UE) is parsed to obtain the destination address information of the packet, and the destination address information is compared with the routing list, and then the result is compared according to the comparison result. The corresponding network type (for example, regional network (LAN), Internet (Internet), home network, etc.) interface to send packets. In this way, packets of specific destination address information are not processed or transmitted via the telecommunications core network, thereby sharing the traffic burden of the telecommunications core network.

1 is a block diagram showing a packet routing conversion system in accordance with an embodiment of the present invention. Referring to FIG. 1, the packet routing conversion system 10 includes a user equipment 100, a base station (not shown), and a packet routing device 150.

In an embodiment of the present invention, a user equipment (UE) (eg, user equipment 100) may represent various embodiments, which may include, but are not limited to, a mobile station, Advanced mobile station (AMS), server, client, desktop, notebook, network computer, workstation, personal digital assistant (PDA), personal computer (personal computer; PC), scanner, telephone device, pager, camera, television, palm-sized video game device, music device, wireless sensor, and the like.

2 is a block diagram showing a user equipment according to an embodiment of the invention. Referring to FIG. 2, from a hardware perspective, the user equipment 100 may also be referred to as a device, including at least but not limited to a communication unit 110 (eg, a transmitter circuit, a receiver circuit, analog to digital (A/D)). Converter, digital to analog (D/A) converter, one or more antenna elements), storage unit 120, and processing unit 130. The transmitter and receiver wirelessly transmit a downlink signal and receive an uplink signal. The receiver may include functional elements that perform operations such as low noise amplification, impedance matching, mixing, down conversion, filtering, amplification, and the like. The transmitter may include functional elements that perform operations such as amplification, impedance matching, mixing, upconversion, filtering, power amplification, and the like. Analog to digital (A/D) or digital to analog (D/A) converters configured to convert from analog signal format to digital signal format during uplink signal processing and from digital signal format during downlink signal processing Convert to analog signal format.

Processing unit 130 is configured to process the digital signal and to execute a program associated with the proposed method in accordance with an exemplary embodiment of the present disclosure. Moreover, the processing unit 130 can be coupled to the storage unit 120 to store code, device configuration, codebook, buffered data, or permanent data, and the like. The function of the processing unit 130 It can be implemented using a programmable unit such as a microprocessor, a microcontroller, a digital signal processing (DSP) chip, or a Field Programmable Gate Array (FPGA). The function of the processing circuit can also be implemented by a separate electronic device or an integrated circuit (IC), and the processing unit 130 can also be implemented by hardware or software.

The packet routing device 150 and the base station may be a home evolved Node B (or a home base station, a HeNB) or a femtocell base station, or may be an advanced base station (ABS) or a base station. System (base transceiver system; BTS), access point, relay station, repeater, intermediate node, intermediary, satellite-based communication base station, gateway, and/or Any type of server. In other embodiments, packet routing device 150 may also be embedded in the aforementioned physical paradigm as a module, chip, or chipset. For convenience of description, in the following embodiments, the packet routing device 150 is used to integrate the foregoing physical examples (for example, HeNB or home base station, etc.), but the embodiment of the present invention is not limited.

The functions described for the base station can also be implemented in entities such as: Serving Gateway (S-GW), Packet Data Network Gateway (PDN-GW), Serving GPRS A Serving GPRS Support Node (SGSN), a Gateway GPRS Support Node (GGSN), or a node that maintains a database related to user information.

From a hardware perspective, the packet routing device 150 and the base station contain at least (but Not limited to) communication unit 151 (eg, transmitter circuit, receiver circuit, analog to digital (A/D) converter, digital to analog (D/A) converter, one or more antenna units), storage unit 153 And processing unit 155. The storage unit 153 can store code, device configuration, buffered data or permanent data, a code book, and the like. Processing unit 155 can also be implemented in hardware or software. The function of each element of packet routing device 150 will be similar to that described for user device 100 and thus a detailed description of each element will not be repeated. In addition, the communication unit 151 of the packet routing device 150 may further include a network card supporting connection to, for example, the Internet, a regional network, and a telecommunications area network (for example, supporting Home Appliance Middleware (HAM)) or Network connection devices (such as modems, routers, switches, hubs, etc.) and other network type connection interfaces.

3A is a schematic diagram of a conventional long term evolution architecture. Referring to FIG. 3A, in the traditional LTE architecture, when the user equipments 310 and 320 transmit data, all the packets need to pass through the telecommunications core network 350 (for example, an evolved packet core (EPC)), regardless of It is the control signal or the data packet that needs to be processed through the telecommunications provider's telecommunications core network 350. For example, the user device 310 can transmit the packet to the Internet 360 through the home base station 330 and the telecommunications core network 350. In addition, when the user equipment 310 wants to transmit the packet to the user equipment 320 that belongs to the same home base station 330, it also needs to utilize the resources of the telecommunications core network 350 for transmission. Accordingly, FIG. 3B is a schematic diagram illustrating a long term evolution architecture in accordance with an embodiment of the present invention. Referring to FIG. 3B, the embodiment of the present invention routes packets. The device 150 is constructed, for example, as a chip or module in the home base station 330 or independently as, for example, a base station device or server to pass portions of the packet through other network types (eg, regional network (LAN), internet) The interface of the Internet (Internet), the telecommunications core network, the telecommunications area network, etc., is transmitted to allow the user equipment 310 to directly transmit data to the user equipment 320, to the control appliance 370, or to the Internet 360. There is no need to go through the telecommunications core network 350, which will be described in detail below.

FIG. 4 is a flow chart illustrating a packet routing method according to an embodiment of the invention. Referring to FIG. 4, the packet routing method of this embodiment is applicable to the packet routing conversion system 10, the packet routing device 150 of FIG. 1, and the user equipment 100 of FIG. Hereinafter, the packet routing method according to the embodiment of the present invention will be described in conjunction with various elements in the user equipment 100 and the packet routing device 150. The various processes of the method can be adjusted accordingly according to the implementation situation, and are not limited thereto.

In step S410, the packet routing device 150 receives the packet from the user equipment 100 and obtains the destination address information of the packet. In this embodiment, the packet includes a General Packet Radio Service (GPRS) Tunneling Protocol (GTP) packet, and the processing unit 155 of the packet routing device 150 disassembles the general packet wireless service tunneling protocol packet to obtain The general packet encapsulates the header of the wireless service tunneling protocol packet and analyzes the header to obtain the destination address information. In this embodiment, the destination address information includes, for example, a destination IP address, a port, or other specific identification code (ID).

Specifically, FIGS. 5A and 5B are diagrams illustrating a network transmission protocol in accordance with an embodiment of the present invention. Referring to FIG. 5A, packet routing according to an embodiment of the present invention The device 150 is provided with a partial transmission protocol of a base station (for example, an eNB, a HeNB, etc.) and a service gateway (S-GW), and is in a general packet radio service tunnel protocol layer-user level (General Packet Radio Service (GPRS). The upper layer of the Tunneling Protocol-User plane; GTP-U is added with a route judging module 555. In the embodiment of the present invention, the route judging module 555 is controlled by the processing unit 155 of the packet routing device 150 of FIG. 1, and the packet routing device 150 is used as an independent base station or server to receive the home base station 330. In other embodiments, for example, when the packet routing device 150 is configured in the home base station 330, all operations of the route judging module 555 can be performed through the home base station 330, and the present invention is not limited. .

When the user equipment 100 transmits data to the home base station 330 through the telecommunication network, the data may include a physical (PHY) layer, a media access control (MAC) layer, and a radio link control. ; RLC) layer, Packet Data Convergence Protocol (PDCP) layer, Internet Protocol (IP) layer, Transmission Control Protocol (TCP) / User Datagram Protocol (User Datagram Protocol) ; UDP) layer, application layer header and data. Next, the home base station 330 converts the data transmitted by the user equipment 100 into the GTP-U packet and transmits it to the packet routing device 150. The routing judging module 555 can obtain the IP packet (IPv4 or IPv6) after removing the header of the GTP-U packet. Then, the route judging module 555 analyzes the header of the IP packet to obtain an IP address. In another embodiment, processing unit 155 of packet routing device 150 The header of the IP packet can be removed and the TCP or UDP packet can be parsed to obtain the destination port. That is, the destination address information of the packet may include an IP address and a destination port or other specific identification code (ID).

It should be noted that before the processing unit 155 of the packet routing device 150 disassembles the GTP-U packet, the user equipment 100 may first determine that the GPRS Tunneling Protocol-Control plane (GPRS Tunneling Protocol-Control plane; GTP-C) or GTP-U packet. When the user equipment 100 transmits the GTP-C packet, the processing unit 155 can use the communication unit 151 to transmit the GTP-C packet through the interface of the telecommunications core network.

In step S430, the processing unit 155 of the packet routing device 150 compares the destination address information with a routing list, wherein the routing list records a plurality of network types. In the embodiment of the present invention, the network type includes a local area network (LAN), a telecommunications core network, an Internet (Internet), and an appliance network. In addition, the plurality of network types in the routing list respectively correspond to the routing target address, and the processing unit 155 of the packet routing device 150 compares the destination address information with the routing target address corresponding to the network type respectively, and When the destination address information conforms to one of the routing destination addresses, the processing unit 155 of the packet routing device 150 determines the network type corresponding to the matching routing target address.

Specifically, after the header of the GTP packet is removed in step S410, the processing unit 155 of the packet routing device 150 determines whether the packet belongs to a local IP access (LIPA) service according to the destination address information. In other words, the processing unit 155 compares the destination address information with the routing target address corresponding to the regional network according to the routing destination address corresponding to the regional network in the network type.

In an embodiment, the processing unit 155 of the packet routing device 150 determines the sender (e.g., user device 100) and the final recipient (e.g., server, notebook, personal computer, or another user) of the packet. Whether the device, etc., is within the coverage of a base station (e.g., packet routing device 150). If the processing unit 155 compares and finds that the sender and the final receiver of the packet are not in the service coverage of the same base station (for example, the comparison does not match, that is, the destination address information does not correspond to the routing target address) ), indicating that the final recipient of the packet does not belong to the same local area network as the user equipment 100, and therefore needs to be transmitted through the telecommunications core network or the Internet. On the other hand, if the sender and the final receiver of the packet are within the service coverage of the same base station (for example, the alignment is met, that is, the destination address information has a corresponding routing target address), the processing unit 155 It is further determined whether the sender of the packet is the regional network transmission service provided by the packet routing device 150 for the first time.

In another embodiment, processing unit 155 checks the list of connected user devices to determine if the sender of the packet is using the local area network transmission service for the first time. A plurality of user equipment addresses can be recorded in the connected user equipment list, and the processing unit 155 can compare the source IP address carried by the packet header with the user equipment address in the user equipment list. To determine if it is consistent. If the processing unit 155 determines that the user equipment 100 is using the local area network service for the first time (for example, the user equipment 100 is not in the user equipment list), the processing unit 155 records the information of the user equipment 100 (for example, in the packet). Source IP address, source port or specific ID, etc.). Then, when the user device uses the local area network service, it can be built directly. The transmission channel is forwarded and the packet is forwarded to the corresponding regional network. On the other hand, if the processing unit 155 determines that the user equipment 100 is not using the local area network service for the first time, it further uses, for example, an IP look-up table (IPtable) to determine that the packet is to be transmitted to the packet routing device 150 according to the destination address information. Another user device in the range, or a connected device that uses a fixed network in the same local area network (for example, an electrical device with connectivity (for example, smart TV, smart refrigerator, network attached storage (Network) -Attached Storage; NAS) devices, network printers, etc.) (ie, electrical devices in a local area network).

In another embodiment, the processing unit 155 checks whether the destination address information of the packet is a routing target address (eg, a service gateway (S-GW) or a mobility management element in the routing list corresponding to the telecommunications core network ( Mobility Management Enity; MME) IP address). When the destination address information conforms to the routing target address corresponding to the telecommunications core network, the processing unit 155 determines that the packet transmitted by the user equipment 100 needs to be sent through the interface of the telecommunications core network. For example, it is transmitted to the remote device 580 through the service gateway 570 of FIG. 5A. Conversely, the packet can be sent through an interface of the Internet, a telecommunications area network, or a regional network, and the processing unit 155 can determine the corresponding network type via the routing list.

In another embodiment, the processing unit 155 can directly compare the destination address information of the packet with all routing target addresses in the routing list corresponding to the telecommunication core network, the Internet, and the regional network, to It is decided that this packet needs to be sent through the telecommunications core network, the Internet or the regional network interface.

It should be noted that, before step S410, the packet routing device 150 serves When the electronic device in the range or area network registers, logs in, or connects to the packet routing device 150 for the first time, the processing unit 155 of the packet routing device 150 can set the device address of the electronic device (eg, IP address, port) , specific ID, etc.) are recorded in the user equipment list. In an embodiment, the processing unit 155 may also record the device address in the user equipment list in the form of a corresponding symbol, a code, a number, and the like, which is not limited in the embodiment of the present invention. For example, the IP address 192.168.3.2 is USER1 and the IP address 192.168.3.9 is USER3.

Next, in step S450, the processing unit 155 of the packet routing device 150 transmits the packet through the interface of one of the corresponding network types according to the comparison result.

Specifically, if the processing unit 155 determines that the packet is transmitted to another user equipment within the coverage of the packet routing device 150, the processing unit 155 further checks whether the information of the other user device is in the user equipment list. (for example, IP address, port or specific ID, etc.). If the information of the other user equipment does not exist in the user equipment list, the telecommunications core network (for example, the telecommunications core network 350 of FIG. 3) is established to establish a transmission channel (ie, through the telecommunications core network). The interface (eg, S1-U, S1-MME, etc.) sends a packet to inform the telecommunications core network to establish a transport channel). At this time, the processing unit 155 also records the relevant data of the transmission channel, so that the transmission channel can be directly established by the processing unit 155 when the next network type is used for transmission. On the other hand, if the processing unit 155 determines that the user equipment 100 is to communicate with the Internet access device (ie, the electrical equipment in the local area network) that uses the fixed network in the same area network, the processing unit 155 and the area network The interface of the road (for example, HAM) communicates.

It should be noted that after the processing unit 155 selects one of the interfaces of the corresponding network type, in an embodiment, the processing unit 155 selects the telecommunications area network or the telecommunications core network as the interface for the subsequent packet transmission interface. Next, the processing unit 155 further restores the header of the packet and transmits the packet via an interface of one of the corresponding network types. Specifically, please refer to FIG. 5A again. In the above description, the processing unit 155 queries the user equipment list, and according to the queried, for example, an IP address, a port, and a tunnel end point ID (TEID). The information is added to the header of the GTP-U in the packet disassembled in step S410, and the restored GTP-U packet is transmitted through the interface of the corresponding network type.

In another embodiment, referring to FIG. 5B, in the context that the processing unit 155 selects the Internet or the local area network as the interface for subsequent packet transmission, the processing unit 155 does not need to restore the packet to the GTP-U packet, but directly transmits the packet. The communication unit 151 transmits IP packets to the remote device 580 via, for example, a router, an internet or a regional network interface.

In addition, the transmission channel mentioned in the foregoing embodiment is a Radio Resource Control (RRC) or User-plane PDCP, which is well known to those skilled in the art, such as a control-plane. For example, the physical downlink shared channel (PDSCH), the physical downlink control channel (PDCCH), and the physical layer multicast channel (Physical Downlink Control Channel; PDCCH) established by any communication protocol layer of the RLC, the MAC, and the PHY ( Physical Multicast Channel; PMCH), physical layer uplink Channels such as a physical channel (PUSCH), a DL shared channel (DL-SCH), and an uplink shared channel (UL-SCH) are not limited in the present invention.

It should be noted that, through the transmission protocol architecture of FIG. 5, the packet routing device 150 of the embodiment of the present invention can exist independently in the LTE network architecture without affecting the mechanism and architecture of the existing LTE network system. In addition, the packet routing device 150 does not need to cost hardware upgrades, nor does it affect the channel establishment mechanism of all telecommunications core networks.

The packet routing method of FIG. 4 will be described below by way of example, and FIG. 6 is a flowchart of an example of checking destination address information. Referring to FIG. 6, the processing unit 155 of the packet routing device 150 receives the GTP packet (step S610), and determines whether the packet is transmitted to the service gateway (S-GW) (step S620). If the destination address information of the packet is the IP address of the service gateway or the mobility management element (MME), the processing unit 155 transmits the packet through the interface of the telecommunication core network using the communication unit 151 (step S625). Otherwise, the processing unit 155 removes the header of the GTP packet (step S640), and determines whether the IP packet belongs to the LIPA service (step S650). If the packet does not belong to the LIPA service, the header of the GTP packet is restored (step S655) and forwarded to the service gateway (S-GW) (step S657). If the packet belongs to the LIPA service, the processing unit 155 further determines whether the user device 100 is using the LIPA service for the first time (step S670).

If the user equipment 100 is not using the LIPA service for the first time, the processing unit 155 determines whether the packet belongs to the user equipment to the user equipment service (for example, 3 of the user device 310 to the user device 320) (step S675). If the packet does not belong to the user device to the user device service, the processing unit 155 uses the communication unit 151 to communicate with the HAM interface (step S679). If the packet belongs to the user equipment to the user equipment service, the processing unit 155 determines whether the other user equipment is located in the user equipment list (or the routing destination address corresponding to the regional network in the routing list) (step S677) . If the other user equipment is not in the user equipment list, then return to steps S655 and S657 to restore the header of the GTP-U and forward it to the service gateway (S-GW). If another user device is in the user device list, the processing unit 155 will perform user device pairing (described later in the example) (step S678). On the other hand, if the user equipment 100 is using the LIPA service for the first time, the processing unit 155 records the information of the user equipment 100 (for example, an IP address, a connection port, etc.) (step S690), and returns to step S675 to determine the packet. Whether it belongs to user device to user device service.

In step S678 of FIG. 6, the processing unit 155 further performs a user equipment pairing procedure, which will be exemplified below. 7 is a flow chart of an example of user device pairing. Referring to FIG. 7, after the packet routing device 155 receives the packet (step S710), the processing unit 155 checks which user device the packet belongs to (step S720). Next, the processing unit 155 queries the user equipment list to obtain information of another user equipment (eg, IP address, port, specific ID, etc.) (step S740), and joins the header of the GTP-U packet (for example, TEID, sequence number, etc.) (step S770). The processing unit 155 transmits the GTP-U packet to the home base station (ie, the home base station or the independent base station integrated by the packet routing device 150) (step S780), and The IP packet is transmitted to the corresponding other user device (step S790).

Since the end user is using a telecommunication network (for example, LTE), the user may have different transmission channel requirements (for example, data transmission and voice communication) depending on the service used. The electronic devices that use the network can be classified into the same or different base station services according to the signal range of the base station. There are three different transmission scenarios depending on the various services used by the user equipment, the behavior of the network and the coverage of the base station service. Three examples will be given below to illustrate the operation mode of the packet routing method in the embodiment of the present invention. In addition, for convenience of description, the following example will be described with the home base station 330 and the route determination module 555 integrated by the packet routing device 150 of FIG. 5.

In the first example, assuming that the user uses the LTE telecommunications network connection and wants to use the Google search engine to search for webpage data, the user equipment 100 receives the user's operation of opening the browser and inputting the Google web address. 8 is a sequence diagram of a sequence of user equipment 100 using internet services. Please refer to the telecommunications network transmission process 810 in FIG. The user equipment 100 transmits the IP packet to the home base station 820 (step S811), and the home base station 820 transmits the GTP packet to the route determination module 555. Then, the route judging module 555 removes the header of the GTP packet, and compares the destination IP address and the port of the packet with, for example, a list of devices in the network (for example, the routing list corresponds to the regional network). Step S815). Since the destination IP address of the packet is the IP address of the Google server, the destination IP address of the packet is not in the intranet device list, and the route judging module 555 determines whether the packet is to be sent through the telecommunication core network 350. deal with. If yes, then pass The GTP packet is sent to the telecommunications core network 350 (step S817), and the packet is transmitted to the Internet 360.

Please refer to the Selected Internet Protocol Traffic Offload (SIPTO) transmission process 850 in FIG. The difference from the telecommunication network transmission process 810 is that, in step S855, if the route judging module 555 queries that the destination IP address of the packet conforms to the routing destination address corresponding to the Internet in the routing list, the route judging module 555 determines that it is a SIPTO service, and directs the IP packet to the Internet 360 through, for example, a fixed network (step S857), so that the packet can be delivered to, for example, a Google server. Thereby, the engineer applying the embodiment of the present invention can record the IP address of a specific website (for example, a website with frequent use or high traffic) in the route list corresponding to the route destination address of the Internet to share the telecommunication core. Network traffic.

In the second example, if the user also uses a telecommunication network (eg, LTE) connection and wants to transmit an instant message or instant video to another user of the same telecommunication network, the user device 100 receives the user. Turn on instant messaging software and send messages or video operations. 9A and 9B are sequence diagrams of the user equipment 100 using a telecommunications area network. Referring to FIG. 9A, the difference between the telecommunication network transmission process 810 and the SIPTO transmission process 850 in the sequence diagram of FIG. 8 is that, in steps S915 and S916, the route determination module 555 determines that the destination address information of the packet is the user. In the device list, the IP address of the user equipment 900, the route judging module 555 adds the packet to the GTP-U header corresponding to the user equipment 900 (for example, includes the exclusive TEID, the IP address of the home base station). Address and connection, etc.) and will seal this The package is transmitted back to the base station 930 (step S917). Finally, the home base station 930 transmits the IP packet to the user equipment 900 (step S919), and the corresponding instant messaging software in the user equipment 900 receives the message or video transmitted by the user equipment 100.

It should be noted that, before the process illustrated in FIG. 9A, the user equipment 100 may first register with the server of the instant messaging software. Referring to FIG. 9B, the difference from the telecommunications network transmission procedure 810 of FIG. 8 is that, in step S955, the route judging module 555 confirms according to the destination IP address and the connection port of the registration packet transmitted by the user equipment 100. Whether or not the registration packet is sent to the server 940 of the instant messaging software (step S955). If so, the information of the user equipment 100 (for example, IP address and port, etc.) is simultaneously recorded to facilitate the determination in step S915 of FIG. 9A. Next, the route judging module 555 sends the registration packet to the telecommunications core network 350, and the registration packet is subsequently transmitted to the server 940 of the instant messaging software. Finally, the server 940 of the instant messaging software transmits a response (eg, an acknowledgment (ACK)) (step S959). Accordingly, the embodiment of the present invention enables a user to use a voice over internet protocol (VoIP) voice service, a video service, and an instant message service through the packet routing device 150.

In the third example, if the user also uses a telecommunication network (for example, LTE) to connect and wants to log in to the server to download the file, the user device 100 receives the user to open an application such as server file management, and logs in. Account password, browsing files and downloading files. FIG. 10 is a sequence diagram of the user equipment 100 connecting the appliances. Referring to FIG. 10, the difference from the use of the telecommunication area network in FIG. 9A is that, in step S1003, the route judging module 555 determines the user equipment. 100. In order to communicate with a server in the telecommunications area network, the route judging module 555 communicates with the home appliance interworking interface 1050 embedded or external to the packet routing device 150 (steps S1004 and S1005). Next, the home appliance mediation interface 1050 communicates with the appliances in the local area network (S1006). The user device 100 can transmit the packet to the server in the telecommunications area network without going through the telecommunications core network 350.

If the server in the telecommunications area network transmits the packet to the route judging module 555 through the HAM 1050 (step S1007), the route judging module 555 compares the destination IP address and the port of the packet with the user equipment list. Medium (step S1008). If the destination IP address and the connection port of the packet are located in the user equipment list, the route judging module 555 transmits the GTP packet to the home base station 930 (step S1009), and the home base station 930 transmits the IP packet to the user. The device 100 (step S1010).

FIG. 11 is a schematic diagram showing the hardware integration of the packet routing device 155 and the home base station according to an embodiment of the invention. Referring to FIG. 11, all functions of the packet routing device 150 in the foregoing embodiment may be implemented as the route judging module 1102, and connected to the home base station 1101 and the HAM 1104. The HAM 1104 can be connected to the WIFI module 1103, and the appliance 1130 can be connected to the HAM 1104 via the area network ports 108 1108 and 1109. The route judging module 1102 can be directly connected to the Internet via a Wireless Wide Area Network (WAN) port. The user device 1110 can be connected to the telecommunications network service provided by the home base station 1101 and operate the appliance 1130.

Thereby, the packet routing device 150 of the present invention is integrated with the home base station. Not only does it provide information sharing among all electronic devices in the home, but the mobile phone can also enjoy LTE telecommunication network services with better signals at home, and even access other devices in the home by means of a telecommunications area network. Alternatively, the registered members can communicate with each other, share information, or operate all electronic devices (eg, a webcam, home security system, refrigerator, air conditioner, etc.) that are connected to the packet routing device 150 of the present invention. The user can also set up an externally connected computer at home as a home media server, and store information such as images, photos, music, etc., and can share it with other devices in the home through the packet routing device 150. Connected to the user device of packet routing device 150.

In addition, since all packets passing through the packet routing device 150 need to execute the route judging module 555 via the processing unit 155 for verification, the interface type of the transmitted network can still be determined. Therefore, the packet routing device 150 can also add components that record the network usage state of the user equipment (eg, data traffic, occupied bandwidth, usage time, etc.). Since the architecture of the embodiment of the present invention is designed based on the telecommunication network, the carrier or the telecommunication network provider can accurately grasp the state of the consumer's network usage, and thus calculate the charge for different usage states and business models.

In summary, the packet routing apparatus according to the embodiment of the present invention can disassemble the packet transmitted by the user equipment to obtain the destination address information of the packet, compare the destination address information with the routing list, and determine the transmission. One of the telecommunications core networks, the Internet, the regional network, and the telecommunications area network to transmit this packet. The packet routing device of the embodiment of the present invention does not significantly affect the original telecommunication network system, and does not reduce the traffic that the telecommunication network system should have. Furthermore, the invention is implemented The example can provide functional services that cannot be provided by the traditional telecommunication network system, for example, as a communication bridge between the telecommunication network and the non-telecom network, so that the user equipment can communicate with the regional network transmission mode, and The transmitted packets do not need to be processed by the telecommunications core network.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

S410~S450‧‧‧Steps

Claims (15)

A packet routing method, applicable to a base station including multiple network type interfaces, comprising: receiving a packet, wherein the packet includes a universal packet wireless service tunneling protocol (GTP) packet, and analyzing the universal packet wireless service tunnel The protocol packet is obtained to obtain a destination address information of the packet; the destination address information is compared with a routing list, wherein the routing list records the network types; and the corresponding network is transmitted according to the comparison result One of the road types interfaces to transmit the packet. The packet routing method according to claim 1, wherein the network types in the routing list respectively correspond to a plurality of routing target addresses, and the destination address information is compared with the routing list. The step includes: comparing the destination address information with the route destination addresses corresponding to the network types respectively; and determining that the destination address information meets one of the route destination addresses, The network type corresponding to the route target address. The packet routing method of claim 1, wherein the step of receiving the packet and obtaining the destination address information of the packet comprises: disassembling the universal packet wireless service tunneling protocol packet to obtain the universal packet wireless service tunnel a header of the agreement packet; and analyzing the header to obtain the address information of the destination. The packet routing method according to claim 3, wherein the step of transmitting the packet through the interface of one of the corresponding network types according to the comparison result comprises: restoring the universal packet wireless service tunnel The header of the protocol packet; and transmitting the universal packet wireless service tunneling protocol packet via the interface of one of the corresponding network types. The packet routing method according to claim 1, wherein the network types include a regional network, a telecommunications core network, an internet, and a telecommunications area network. A packet routing device includes: a storage unit storing a plurality of modules; a communication unit including a plurality of network type interfaces; and a processing unit coupled to the storage unit and the communication unit to access the modules The group performs the following steps: receiving, by the communication unit, a packet, where the packet includes a universal packet wireless service tunneling protocol packet, and analyzing the universal packet wireless service tunneling protocol packet to obtain a destination address information of the packet; The destination address information is compared with a routing list, wherein the routing list records the network types; and the communication unit is used to transmit the packet through the interface of one of the network types according to the comparison result. . The packet routing device according to claim 6, wherein the route is The network types in the list respectively correspond to a plurality of routing target addresses, and the processing unit compares the destination address information with the routing destination addresses corresponding to the network types respectively, and when When the destination address information meets one of the route destination addresses, the processing unit determines the network type corresponding to the route target address that is met. The packet routing device of claim 6, wherein the processing unit disassembles the universal packet wireless service tunneling protocol packet to obtain a header of the universal packet wireless service tunneling protocol packet, and analyzes the header to obtain The destination address information. The packet routing device of claim 8, wherein the processing unit restores the header of the universal packet wireless service tunneling protocol packet and transmits the interface via one of the corresponding network types General Packet Wireless Service Tunneling Protocol Packet. The packet routing device of claim 6, wherein the network types comprise a regional network, a telecommunications core network, an internet network, and a telecommunications area network. A packet routing conversion system includes: a user equipment; a base station receiving a packet transmitted by the user equipment; and a packet routing device, wherein the packet routing device receives the user equipment from the base station via the base station The packet, wherein the packet transmitted by the base station includes a universal packet wireless service tunneling protocol packet, and the packet routing device analyzes the universal packet Packet wireless service tunneling protocol packet to obtain a destination address information of the packet, the packet routing device compares the destination address information with a routing list, wherein the routing list records multiple network types, and the packet routing The device transmits the packet through an interface of one of the corresponding network types according to the comparison result. The packet routing conversion system of claim 11, wherein the network types in the routing list respectively correspond to a plurality of routing target addresses, and the packet routing device compares the destination address information with the Comparing the route target addresses corresponding to the network types respectively, and when the destination address information meets one of the route destination addresses, the packet routing device determines that the route destination address corresponding to the route corresponds to The type of network. The packet routing conversion system of claim 11, wherein the packet routing device disassembles the universal packet wireless service tunneling protocol packet to obtain a header of the universal packet wireless service tunneling protocol packet, and analyzes the header To obtain the address information of the destination. The packet routing conversion system of claim 13, wherein the packet routing device restores the header of the universal packet wireless service tunneling protocol packet and the interface is provided via one of the corresponding network types. Transmit the generic packet wireless service tunneling protocol packet. The packet routing system of claim 11, wherein the network types comprise a regional network, a telecommunications core network, an internet network, and a telecommunications area network.