CN110710167B

CN110710167B - Data transmission method and device

Info

Publication number: CN110710167B
Application number: CN201780091582.0A
Authority: CN
Inventors: 蔡仕江; 章国梁; 袁立平; 雒启明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-07
Filing date: 2017-06-07
Publication date: 2021-05-18
Anticipated expiration: 2037-06-07
Also published as: WO2018223304A1; CN110710167A

Abstract

The invention provides a method and a device for data transmission, which comprises the following steps: the network equipment allocates the same IP address for the fixed access and the mobile access of the user equipment; establishing a fixed access link and a mobile access link between the user equipment and the user equipment, and establishing a binding relationship between the fixed access link and the mobile access link; and transmitting the data of the user equipment through the fixed access link and the mobile access link according to the binding relationship. The invention improves the network bandwidth and reduces the data transmission delay by distributing the same IP address for the UE and binding the fixed-mobile access double-link.

Description

Data transmission method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for data transmission.

Background

At present, smart phones are widely used, and fourth generation (4G) mobile communication networks are also deployed on a large scale. The current smart phone can be generally accessed To a mobile network, such as a 2G/3G/4G mobile communication network, and can also be accessed To a fixed network, such as a Digital Subscriber Line (DSL), a Fiber To The Home (FTTH), and The like through WiFi. The user can use the smart phone to access the internet through a mobile network or a fixed network in different scenes, such as using the fixed network at home or in an office, and using the mobile network in outdoor activities.

Future 5g (Fifth Generation) networks put further demands on high bandwidth and low latency, such as the internet of things, online medicine, smart factories, etc. How to further improve the bandwidth of data transmission between the user equipment and the network and reduce the communication delay is a problem which is urgently needed to be solved at present.

Disclosure of Invention

The embodiment of the invention provides a data transmission method and device, which improve the network bandwidth and reduce the data transmission delay.

In a first aspect, an embodiment of the present invention provides a method for data transmission, where the method includes: the network equipment distributes the same IP address for the fixed access and the mobile access of the user equipment UE, establishes a fixed access link and a mobile access link between the network equipment and the user equipment, then establishes a binding relationship between the fixed access link and the mobile access link, and transmits the data of the UE through the fixed access link and the mobile access link respectively according to the binding relationship.

The method improves the network bandwidth and reduces the data transmission delay by distributing the same IP address for the UE and binding the fixed-mobile access double-link.

In one possible design, the network device receives downlink data with a destination IP address as the user equipment, and sends the downlink data to the user equipment through the fixed access link and the mobile access link according to the binding relationship. Therefore, the network bandwidth of the downlink data is improved, and the data transmission delay is reduced.

In yet another possible design, the network device further performs traffic allocation according to transmission capabilities of the fixed link and the mobile link, and sends downlink data to the user equipment through the fixed access link and the mobile access link according to allocated proportions. Thereby further improving the flexibility of the downlink data transmission.

In yet another possible design, the network device receives first uplink data sent by the user equipment through the fixed access link and second uplink data sent by the mobile access link, and combines the first uplink data or the second uplink data according to the binding relationship. Therefore, the network bandwidth of uplink data is improved, and the data transmission delay is reduced.

In yet another possible design, the network device determines that the received fixed access request and the mobile access request are from the same user device according to a matching relationship between the fixed access identifier and the mobile access identifier of the user, where the fixed access request includes the fixed access identifier of the user, and the mobile access request includes the mobile access identifier of the user. Thereby further improving the accuracy of user identification.

In yet another possible design, the network device performing the method is a user plane device, and the user plane device is configured according to a fixed access identifier or a mobile access identifier of the user device. Therefore, the method is suitable for 5G environment, and the flexibility of the system is improved.

In a second aspect, an embodiment of the present invention provides a method for data transmission, including: the UE receives the same IP address distributed by the network equipment for the fixed access and the mobile access of the UE; establishing a fixed access link and a mobile access link with network equipment; and transmitting the data of the user equipment through the fixed access link and the mobile access link respectively.

In one possible design, the UE receives first downlink data sent by the fixed access link and second downlink data sent by the mobile access link, and combines the first downlink data or the second downlink data. Therefore, the network bandwidth of the downlink data is improved, and the data transmission delay is reduced.

In yet another possible design, the UE allocates traffic according to transmission capabilities of the fixed link and the mobile link, and transmits uplink data to the network device through the fixed access link and the mobile access link according to allocated proportions. Therefore, the network bandwidth of uplink data is improved, and the data transmission delay is reduced.

In yet another possible design, the UE may transmit the same uplink data over the fixed access link and the mobile access link, respectively. Therefore, the reliability of data transmission is improved, and the data transmission delay is reduced.

In yet another possible design, the UE sends a fixed access request and a mobile access request, where the fixed access request includes a fixed access identifier of the user, and the mobile access request includes a mobile access identifier of the user. Thereby enabling the network device to accurately identify the same UE.

In a third aspect, an embodiment of the present invention provides a user equipment, which has a function of implementing a behavior of the user equipment in the foregoing method. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the user equipment includes a processor and a memory, the memory is used for storing application program codes for supporting the user equipment to execute the method, and the processor is configured to execute the program stored in the memory. The user device may also include a communication interface for communicating with other devices.

In a fourth aspect, an embodiment of the present invention provides a network device, which has a function of implementing a behavior of the network device in the foregoing method. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the user equipment includes a processor and a memory, the memory is used for storing application program codes supporting the network equipment to execute the method, and the processor is configured to execute the program stored in the memory. The network device may also include a communication interface for communicating with other devices.

In a fifth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the network device or the user equipment, which includes a program designed to execute the above aspects.

The technical scheme provided by the embodiment of the invention improves the network bandwidth and reduces the data transmission delay by distributing the same IP address for the UE and binding the fixed-mobile access dual-link.

Drawings

Fig. 1 is a system architecture diagram of a fixed-moving binding according to an embodiment of the present invention;

FIG. 2 is a diagram of another system architecture for mobile binding according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for solidly moving and binding according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a session identifier and a tunnel identifier according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating another method for immovable binding according to an embodiment of the present invention;

fig. 6 is a schematic diagram of allocating downlink data in proportion according to an embodiment of the present invention;

fig. 7 is a schematic diagram of uplink data redundancy transmission according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 9 is another schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 11 is another schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1, an embodiment of the present invention provides an exemplary diagram of a system for implementing fixed mobility binding, where a network device includes a mobile network device and a fixed network device. The apparatus of fig. 1 is described in detail below.

A User Equipment (UE) 101 has a capability of accessing a mobile network and a fixed network, for example, the UE accesses the mobile network through a base station, and accesses the fixed network through an Access Point (AP), such as a WiFi router.

The mobile network can be a mobile network of any standard in 2G, 3G, 4G or 5G in the future. Fig. 1 illustrates a 4G network architecture, which includes a base station 102; a Mobility Management Entity (MME) 103, and a gateway device 104. The MME103 is used for user equipment radio access control, mobility management, and the like. The GateWay device 104 includes a service GateWay (S-GW) and a PDN GateWay (P-GW), and is configured to allocate an IP address of a user, manage connection with the user device, and access the user to the Internet.

The fixed network may use DSL, or FTTH, etc. broadband technologies. In the example of fig. 1, the fixed network device includes an Access point device 105 and a Broadband Access Server (BAS) 106. The access point device 105 is used to access the user device to a fixed network, such as a WiFi router, and may access the smartphone to the fixed network. The BAS is connected to the gateway device, for example, the gateway device 104 may be accessed through the S2a interface of the 4G architecture, and the user device may be accessed to the Internet through a fixed link.

The system shown in fig. 1 further comprises a subscriber database 107 for managing mobile access related information and fixed access related information of subscribers. For example, the Subscriber database 107 may include Subscriber information in an hss (home Subscriber server) of the mobile network and Subscriber information of an AAA (Authentication, Authorization, Accounting) server in the fixed network.

The user database 107 further includes a matching relationship between the mobile access identifier and the fixed access identifier of the same user equipment, so that after the network device receives the mobile access request or the fixed access request of the user equipment, it is determined that the mobile access request and the fixed access request are from the same user equipment according to the matching relationship, and the fixed-mobility binding process can be performed. Table 1 below is an example of a user information table.

Serial number	User mobile phone number	IMSI	Fixed access username	Fixed access password
					1	13900010001	460030912121001	User001@SP1.com	xxx1
2	13900010002	460030912121002	User002@SP1.com	xxx2
					...	...	...	...	...

TABLE 1 example of user information Table

The Mobile access identifier of the ue may be a "Subscriber Mobile phone Number" or an "International Mobile Subscriber identity Number" (IMSI) in table 1, and the fixed access identifier of the ue may be a "fixed access user name" in table 1. By means of table 1, a matching relationship between the mobile access identifier and the fixed access identifier is established.

Fig. 2 is a diagram illustrating an example of a system for implementing mobility binding in a future 5G network environment, where in the 5G network, Control functions and data transmission functions of an S-GW and a P-GW may be separated and respectively included in a Control Plane (Control Plane) and a User Plane (User Plane). In the system shown in fig. 2, the functions of the control plane device 203 may include a mobility management entity MME function and control function portions of an S-GW and a P-GW, which may be combined or separated. The user plane device 204 in fig. 2, its functionality may include the user plane part of the S-GW, P-GW. Other devices in fig. 2, such as BAS, user database, etc., function the same as in fig. 1.

A control plane device may typically control multiple user plane devices. When different user equipments request access, the system can configure a user plane equipment UP to process the access request, and the configured user plane equipment UP establishes an access link with the user equipment. The user plane device UP handling the user equipment access request may be pre-configured in the user database. Table 2 shows an example of one configuration.

TABLE 2 example of user information Table

In Table 2, the first two user devices are configured with UP1, the latter user device is configured with UP2, and so on. And during configuration, the configuration can be carried out according to the number section and other strategies of the mobile phone number of the user.

As shown in fig. 3, an embodiment of the present invention further provides a method for fixed-mobility binding, which is applied to the system shown in fig. 1. Wherein, the step 301 and 305 are the process of accessing the UE to the mobile network, and the step 306 and 310 are the process of accessing the UE to the fixed network. The method specifically comprises the following steps:

301, the UE sends a mobile access request through the base station.

The mobile access request may be an attach request, or a service request. The access initiation procedure includes establishing Radio Resource Control (RRC) connection, and establishing S1 interface connection, etc. The mobile access request may include a mobile access identifier of the user, such as a mobile phone number, an IMSI, or the like.

And 302, the MME performs identity authentication on the UE, and after the authentication is passed, the MME sends an activation request message to the gateway equipment.

Specifically, the MME may perform identity authentication according to a mobile access identifier of the user.

303, the gateway device queries the user database for user information according to the activation request.

The gateway device sends an inquiry request message, which carries the mobile access identifier of the user, such as IMSI or the mobile phone number of the user. The user database matches and obtains a corresponding fixed access identifier, such as a fixed access user name, according to the user information table shown in table 1 and the mobile access identifier carried in the query request. And the user database returns an inquiry response message to the gateway equipment, wherein the inquiry response message carries the fixed access user name.

The gateway device establishes 304 a mobile access link and returns an activation response message.

And after receiving the query response message, the gateway equipment queries the session context according to the user name. If the UE does not access through a fixed network before, and a fixed access link of the same UE does not exist in the session context, the gateway device allocates a new IP address for the UE, and establishes a mobile access link with the UE, wherein the establishment of the mobile access link comprises the allocation of a Tunnel Identifier (TEID) of a GPRS Tunnel Protocol (GTP); the gateway device records the relevant information of the mobile access link, including the TEID, in the session context and then goes to step 306.

If the ue has been previously accessed through a fixed network, a fixed access link of the same user already exists in the session context, for example, a pppoe (Point to Point Protocol over ethernet) connection with the ue has already been established, the same IP address is allocated to the ue for the mobile access link, the mobile access link with the ue is established, and the established mobile access with the ue is bound to the established fixed access.

One binding method is to keep consistency between the TEID of the GPRS tunneling protocol allocated for mobile access and the session identification sessionID of the PPPoE allocated for fixed access. In one example shown in fig. 4, the sessionID consists of two parts, including a thread number (token) and a sequence number (sequence). Since the SessionID supported by the PPPoE protocol is 16 bits and the TEID supported by the LTE protocol is 32 bits, a part of bits in the TEID may be taken to be consistent with token and sequence when the TEID is allocated, and the rest of bits may be filled with "0". In FIG. 4, bit0-9 for the TEID coincides with the sequence for the sessionID, bit18-25 coincides with token for the sessionID, and the remaining bits may be set to 0.

Another example of the binding method is to establish a binding relationship table as shown in table 3 below, and record the sessionID of the assigned fixed access and the TEID of the mobile access in table 3 below, so that the TEID is assigned more flexibly.

Serial number	SessionID	TEID
				1	0001	00130011
2	0002	00130012
			...	...	...

TABLE 3 examples of fixed and moving binding relationship tables

It should be noted that the ue may perform the fixed access first or may perform the mobile access first. If the fixed access is carried out firstly, the fixed and mobile two links are bound in the step; if mobile access is first performed, then the mobile links are bonded in a subsequent step 309.

305, the MME returns a mobile access response message to the user equipment. Accordingly, the mobile access response may be an attach response.

Through the steps, the mobile access process of the user equipment is completed, and a mobile link is established between the user equipment and the gateway equipment.

The user equipment sends a fixed access request through the access point 306.

The user equipment may access the fixed network through an access point, such as a WiFi router. The access request includes a fixed access identifier of the user, such as an access user name, and a password.

307, the BAS performs identity authentication on the UE, and the identity authentication is performed according to the user name and the password carried in the fixed access request. And after the authentication is passed, sending an activation request to the gateway equipment. The activation request carries the fixed access identifier of the user.

308, the gateway device sends a query request message to the user database according to the activation request, where the query request message carries the fixed access identifier of the user, for example, the fixed access user name of the user device. The user database matches and obtains a corresponding mobile access identifier, such as an IMSI or a mobile phone number of a user, according to the user information table shown in table 1 and the fixed access identifier carried in the query request. Then the user database returns a query response message to the gateway device, wherein the query response message carries the mobile access identifier.

The gateway device establishes 309 a fixed access link and returns an activation response message to the BAS.

After receiving the inquiry response message, the gateway device inquires the session context according to the mobile access identifier, if the mobile access link of the same user already exists, for example, the GTP tunnel to the same user device is already established, the same IP address is allocated to the user device for the fixed access link, the fixed access link with the user device is established, and the established fixed access with the user device is bound with the established mobile access. An example of establishing a fixed access link is establishing a PPPoE connection with a user equipment and assigning a session identification sessionID of the PPPoE connection.

Similar to the foregoing, one method of binding is to keep the session identification sessionID of PPPoE assigned for fixed access consistent with the tunnel identification TEID of GPRS tunneling protocol assigned for mobile access.

Another example of the binding method is to establish a binding relationship table as shown in table 3, and record the sessionID of the assigned fixed access and the TEID of the mobile access in the table.

The BAS returns a fixed access response to the user equipment 310.

Through the above step 306 and 310, the fixed access process of the user equipment is completed, and a fixed link is established between the user equipment and the gateway device.

As shown in fig. 5, another method for fixing and moving binding is provided in the embodiment of the present invention, and is applied to the system shown in fig. 2. Wherein, the steps 501 and 506 are the process of accessing the UE to the mobile network, and the steps 507 and 516 are the process of accessing the UE to the fixed network. In this example, a user information table shown in table 2 is configured in the user database. The method specifically comprises the following steps:

501, the UE sends a mobile access request to the control plane device through the base station.

The control plane device queries 502 a user database for user information.

The query request message sent by the control plane device to the subscriber database carries the mobile access identifier of the user device, for example, IMSI or a subscriber mobile phone number. The user database matches and obtains a corresponding fixed access identifier, such as a fixed access user name and a corresponding password, according to the user information table shown in table 2 and the mobile access identifier of the user equipment. The user database also queries and obtains information of the user plane device UP corresponding to the user equipment UE, for example, an IP address of UP, which is assumed to be UP1 allocated to the current user in this embodiment. The user database carries the fixed access identifier of the user equipment and the information of the user equipment UP corresponding to the user equipment in the query response message returned to the control plane equipment.

503, after receiving the query response message, the control plane device performs identity authentication, and if the authentication is successful, sends an activation request to the user plane device UP1 corresponding to the user equipment UE, where the activation request carries the mobile access identifier of the user equipment.

At 504 the user plane device UP1 queries the user database for the corresponding fixed access identity.

505 the user plane device UP1 establishes a mobile access link and returns an activation response message.

UP1 queries the locally saved session context based on the username. If the ue does not access through the fixed network before, there is no fixed access link of the same ue in the session context, the UP1 allocates a new IP address to the ue, and establishes a mobile access link with the ue, where the establishing of the mobile access link includes allocating a Tunnel Identifier (TEID) of a GPRS Tunneling Protocol (GTP); the UP1 records relevant information of the mobile access link in the session context, including the allocated user equipment IP address and TEID, and then returns an activation response message to the control plane device, where the activation response message carries the allocated user equipment IP address and TEID.

If the ue has been previously accessed through a fixed network, a fixed access link of the same user already exists in the session context, for example, a pppoe (Point to Point Protocol over ethernet) connection with the ue has already been established, an IP address that is the same as an IP address allocated by the fixed access is allocated to the ue, a tunnel identifier TEID of a GPRS tunnel Protocol is allocated, a mobile access link with the ue is established, and the established mobile access and the established fixed access are bound. And then returning an activation response message to the control plane equipment, wherein the activation response message carries the IP address and the TEID of the allocated user equipment.

One binding method is to keep consistency between the TEID of the GPRS tunneling protocol allocated for mobile access and the session identification sessionID of the PPPoE allocated for fixed access. As in the previous example shown in fig. 4.

Another binding method is the same as the example of table 3, and sessionID of the assigned fixed access and TEID of the mobile access are recorded in the binding relationship table.

Similarly, it should be noted that the ue may perform the fixed access first or may perform the mobile access first. If the fixed access is carried out firstly, the fixed and mobile two links are bound in the step; if mobile access is carried out first, the two fixed and mobile links are bound when fixedly accessed later.

The control plane device returns a mobile access response message to the user equipment 506. Accordingly, the mobile access response may be an attach response.

Through the above steps, the mobile access process of the user equipment is completed, and a mobile access link is established between the user equipment UE and the user plane device UP 1.

507, the user equipment sends a fixed access request through the access point.

And 508, the BAS server performs identity authentication on the UE, and the identity authentication is performed according to the user name and the password carried in the fixed access request. After authentication, an activation request is sent to the user plane devices UP1 and UP2 connected thereto. The user plane device UP1 and the user plane device UP2 forward the activation request to the control plane device. The activation request carries the fixed access identification of the user.

509, the control plane device queries the user database for user information.

The query request message sent by the control plane device to the user database carries the fixed access identifier of the user device. The user database matches and obtains information of the user plane device UP corresponding to the user device, for example, an IP address of UP, according to the user information table shown in table 2 and the fixed access identifier of the user device, which is assumed to be UP1 allocated to the current user in this embodiment. The user database carries the information of the user plane device UP corresponding to the user device in the query response message returned to the control plane device.

The control plane device returns an activation response via the user plane device UP 510.

After receiving the query response message, the control plane device returns an activation response message to the user plane device UP1 according to the IP address of the user plane device UP1 carried in the query response message, and the UP1 forwards the activation response message to the BAS.

511, the BAS returns an activation response to the user equipment carrying the IP address of the user plane device UP 1.

After receiving the activation response, the user equipment initiates an activation request, where the destination address included in the activation request is the IP address of the user plane device UP1, and also includes the fixed access identifier of the user.

513, after receiving the activation request sent by the user equipment, the BAS forwards the activation request to the user plane device UP1 according to the destination address therein.

514, the user plane device UP1 queries the user database to obtain the corresponding mobile access identity, e.g., IMSI or user phone number.

515 the user plane device UP1 establishes a fixed access link and returns an activation response message to the BAS.

UP1 queries the locally stored session context based on the mobile access identification. If the user equipment has been previously accessed through the mobile network, the session context includes information of the mobile access link of the same user equipment, for example, a GTP tunnel to the same user equipment has been established, the same IP address is allocated to the user equipment for the fixed access link, the fixed access link with the user equipment is established, and the established fixed access with the user equipment is bound to the established mobile access. An example of establishing a fixed access link is establishing a PPPoE connection with a user equipment and assigning a session identification sessionID of the PPPoE connection.

516, after receiving the activation response message, the BAS returns a fixed access response to the ue.

Through the above-mentioned step 507 and 516, the fixed access process of the user equipment is completed, and a fixed access link is established between the user equipment UE and the user plane device UP.

Through the corresponding embodiments shown in fig. 3 or fig. 5, a fixed access link and a mobile access link are established between a network device, such as a gateway device or a user plane device, and a user equipment UE. User uplink data and downlink data may be transmitted on both links.

The network device may configure a certain allocation policy, and determine a certain allocation proportion according to the allocation policy to allocate the downlink data between the fixed access link and the mobile access link. For example, the distribution decision may be based on the processing power of the mobile link and the fixed link. The mobile access link transmission capability parameters may include a radio link MBR (maximum bit rate), and a scheduling delay of the base station eNodeB. The transmission capability of the fixed access link has relatively small fluctuation, and parameters configured by the fixed network equipment can be used or can be fed back by the UE. The link transmission capability parameter is typically maintained in the respective link context information of the network device.

An example of proportional allocation is that after a downlink packet arrives at a network device, the downlink packet is allocated to a fixed access link and a mobile access link according to link transmission capability for transmission. The link distribution proportion calculation method comprises the following steps:

link N ratio, link N transmission capacity/(sum of

link

1, 2, … N transmission capacities) × 100%

For example, assuming that the LTE transmission rate of the mobile access link is 80kbps and the DSL transmission rate of the fixed access link is 120kbps, the mobile access link ratio is: 80/(80+120) ═ 40%, the fixed access link accounts for the ratio: 120/(80+120) ═ 60%. Every 10 messages are sent by 4 mobile access LTE links and 6 fixed access DSL links.

After determining the data transmission proportion of the two links, the network equipment distributes and transmits the received downlink data according to the determined proportion. For example, the mobile access link and the fixed access link respectively determine the proportion of 40% and 60%, and for the downlink data stream sent to the user equipment by the Internet, 2 slave mobile access links are allocated to transmit in every 5 data packets, and 3 slave fixed access links are allocated to transmit. After receiving the downlink data of two different links, the user equipment merges the downlink data into a complete data stream again.

For uplink data, the ue may also configure a certain allocation policy, and determine a certain allocation ratio according to the allocation policy to allocate the uplink data between the fixed access link and the mobile access link. The user equipment may also be notified by the network device after determining a good ratio.

The user equipment transmits the uplink data to be transmitted through the mobile access link and the fixed access link according to the determined proportion. After receiving the uplink data of the two different links, the network device confirms that the data in the mobile access link and the data in the fixed access link are from the same user equipment according to the stored fixed binding relation table shown in table 3, and then recombines the data in the mobile access link and the data in the fixed access link into a complete uplink data stream.

In some application scenarios, if low-latency and highly reliable data transmission is required, the downlink data and the uplink data may be sent redundantly, that is, the same entire data is sent in the fixed access link and the mobile access link. For example, in some industrial enterprises, it is required that data transmission of a production system is low in delay and high in reliability, and special wireless access coverage can be performed on the data transmission system, so that a fixed-mobile access dual-connection and data redundant transmission are always kept in an application and use process.

Fig. 6 shows an example of the proportional allocation of downstream data. The network device, such as a gateway device or a user plane device UP, may include a Multi-Link Control (MLC) module, configured to Control transmission of received downlink data to the user device on the fixed access Link and the mobile access Link according to the allocated proportion. The process of distributing the issued data packet specifically comprises the following steps:

after receiving the downlink data, the network device finds the user context and performs service processing. And the MLC module calculates the data distribution proportion of the downlink data on the fixed access link and the mobile access link according to the method. Then, a sequence number SN of a Packet Data Convergence Protocol (PDCP) is obtained and added with 1 to be written into a PDCP Protocol header. (if the SN after adding 1 is greater than the maximum SN, then the SN is equal to 0). If the message is sent through the mobile access link, the user downlink message with the PDCP protocol header finds the bearing context according to the user data context, constructs the GTP header, and sends the GTP header to the base station through the GTP protocol, and the base station further sends the downlink data to the user equipment. If the message is sent through the fixed access link, finding a bearing context from a user downlink message with a PDCP protocol header according to a user data context, constructing a PPPoE header, filling related information of the PPPoE protocol such as Session ID, and the like, sending the message to a BAS (fixed access server), and further sending the message to user equipment.

After receiving the user data from the mobile access link and the fixed access link, the user equipment reorders the received data according to the serial number SN to recover the downlink data.

In one example of redundant transmission shown in fig. 7, all 5 data packets of the upstream are transmitted on both links. Finally, when the network device is reached, the data packet 2 may be lost in the fixed access link, and the data packet 3 may be lost in the mobile access link, but the network device may still obtain a complete data stream after the data packets are de-duplicated and combined.

According to the scheme of the embodiment, the same IP address is distributed to the UE and the fixed mobile access dual-link is bound, so that the network bandwidth is improved, and the data transmission delay is reduced.

An embodiment of the present invention further provides a schematic structural diagram of a user equipment, as shown in fig. 8, including: a mobile access unit 801, a fixed access unit 802, a processing unit 803. Wherein:

the mobile access unit is used for receiving an IP address allocated by the network equipment for mobile access of the user equipment and establishing a mobile access link with the network equipment;

the fixed access unit is used for receiving the same IP address which is distributed by the network equipment for the fixed access of the user equipment and establishing a fixed access link with the network equipment;

and the processing unit is used for transmitting the data of the user equipment through the fixed access link and the mobile access link respectively.

Further, the units implement the relevant steps executed by the user equipment in the foregoing method embodiment, and are not described again.

In this embodiment, the user equipment is presented in the form of a functional unit. An "element" may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that may provide the described functionality. In a simple embodiment, the user device may be implemented using a processor, memory, and a communication interface as will occur to those of skill in the art.

The user equipment in the embodiment of the present invention can also be implemented in the form of a computer device (or system) in fig. 9. Fig. 9 is a schematic diagram of a computer device according to an embodiment of the present invention. The computer device comprises at least one processor 901, a communication bus 902, a memory 903, a mobile access interface 904, a fixed access interface 905, and an IO interface 906.

Processor 901 may be a general-purpose Central Processing Unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the teachings of the present invention.

Communication bus 902 may include a path that transfers information between the aforementioned components.

The Memory 903 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.

The memory 903 is used for storing application program codes for implementing the present invention, and the processor 901 controls the execution of the application program codes. The processor 901 is configured to execute application program code stored in the memory 903.

In a specific implementation, the processor 901 may include one or more CPUs, and each CPU may be a single-Core (single-Core) processor or a multi-Core (multi-Core) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The mobile access interface 904, using any transceiver-like device, is used for communicating with other mobile communication networks, such as 2G, 3G, 4G or even 5G mobile communication networks.

Fixed access interface 905, using any transceiver or the like, is used for communicating with other fixed network devices, such as ethernet, Wireless Local Area Networks (WLAN), etc.

In particular implementations, the computer device may also include an input/output (I/O) interface 906, as one embodiment. For example, the output device may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device may be a mouse, a keyboard, a touch screen device or a sensing device, etc.

The computer device may be a general purpose computer device or a special purpose computer device. In a specific implementation, the computer device may be a desktop computer, a laptop computer, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, or a device with a similar structure as in fig. 9. The embodiment of the invention does not limit the type of the user equipment.

The user device in fig. 1 may be the device shown in fig. 9, with one or more software modules stored in the memory 903. The user equipment may implement the software modules by means of a processor and program code in a memory to perform the above method.

Embodiments of the present invention also provide a computer storage medium for storing computer software instructions for the apparatus shown in fig. 8 or 9, which includes a program designed to execute the method embodiments. The above method can be implemented by executing a stored program.

An embodiment of the present invention further provides a schematic structural diagram of a network device, as shown in fig. 10, including: an address assignment unit 1001, a link establishment unit 1002, and a data transmission unit 1003. Wherein:

the address allocation unit is used for allocating the same IP address for the fixed access and the mobile access of the user equipment;

the link establishing unit is used for establishing a fixed access link and a mobile access link between the user equipment and the link establishing unit and establishing a binding relationship between the fixed access link and the mobile access link;

and the data transmission unit is used for transmitting the data of the user equipment through the fixed access link and the mobile access link respectively according to the binding relationship.

Further, these units implement the functions of the relevant steps executed by the gateway device or the user plane device in the foregoing method embodiments, which are not described again.

In this embodiment, the network device is presented in the form of a functional unit. An "element" may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that may provide the described functionality. In a simple embodiment, one skilled in the art may appreciate that a network device may be implemented using a processor, memory, and a communication interface.

The network device in the embodiment of the present invention may also be implemented in the form of a computer device (or system) in fig. 11. Fig. 11 is a schematic diagram of a computer device according to an embodiment of the present invention. The computer device comprises at least one processor 1101, a communication bus 1102, a memory 1103 and at least one communication interface 1104, and may further comprise an IO interface 1105.

The processor 1101 may be a general purpose Central Processing Unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits configured to control the execution of programs in accordance with the present inventive arrangements.

Communication bus 1102 may include a path that transfers information between the aforementioned components. The communication interface 1104, which may be any transceiver or other communication network, may be used for communicating with other devices or communication Networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

The Memory 1103 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disk storage, optical disk storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.

The memory 1103 is used for storing application program codes for executing the present invention, and the processor 1101 controls the execution of the application program codes. The processor 1101 is configured to execute application program code stored in the memory 1103.

In particular implementations, processor 1101 may include one or more CPUs, each of which may be a single-Core (si — Core) processor or a multi-Core (multi-Core) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In particular implementations, the computer device may also include an input/output (I/O) interface 1105, as one embodiment. For example, the output device may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device may be a mouse, a keyboard, a touch screen device or a sensing device, etc.

The computer device may be a general purpose computer device or a special purpose computer device. In a specific implementation, the computer device may be a desktop computer, a laptop computer, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, or a device with a similar structure as in fig. 11. The embodiment of the invention does not limit the type of the computer equipment.

Such as the gateway device in fig. 1 or the user plane device in fig. 2 may be the network device shown in fig. 11, with one or more software modules stored in the memory 1103. The network device may implement the software modules by means of a processor and program code in memory to perform the above-described methods.

Embodiments of the present invention also provide a computer storage medium for storing computer software instructions for the apparatus shown in fig. 10 or fig. 11, which includes a program designed to execute the method embodiments. The above method can be implemented by executing a stored program.

While the invention has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. A computer program stored/distributed on a suitable medium supplied together with or as part of other hardware, may also take other distributed forms, such as via the Internet or other wired or wireless telecommunication systems.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the invention has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations thereof are possible. Accordingly, the specification and figures are merely exemplary of the invention as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of data transmission, comprising:

allocating the same IP address for the fixed access and the mobile access of the user equipment;

establishing a fixed access link and a mobile access link between the fixed access link and the user equipment, and establishing a binding relationship between a session identifier of the fixed access link and a tunnel identifier of the mobile access link;

transmitting the data of the user equipment through the fixed access link and the mobile access link respectively according to the binding relationship;

the transmitting the data of the user equipment through the fixed access link and the mobile access link according to the binding relationship specifically includes:

receiving first uplink data sent by a fixed access link and second uplink data sent by a mobile access link of the user equipment, and combining the first uplink data or the second uplink data if the first uplink data and the second uplink data are determined to be from the same user equipment according to the binding relationship;

if the same uplink data sent by the user equipment through the fixed access link and the mobile access link respectively is received, performing de-duplication processing and combination processing on the received uplink data;

before allocating the same IP address for the fixed access and the mobile access of the user equipment, the method further includes:

determining that the received fixed access request and the mobile access request are from the same user equipment according to the matching relation of the fixed access identifier and the mobile access identifier of the user, wherein the fixed access request comprises the fixed access identifier of the user, the mobile access request comprises the mobile access identifier of the user, and the mobile access request is an attachment request or a service request.

2. The method of claim 1, wherein the transmitting the data of the ue through the fixed access link and the mobile access link according to the binding relationship specifically comprises:

and receiving downlink data with the destination IP address as the user equipment, and respectively sending the downlink data to the user equipment through the fixed access link and the mobile access link according to the binding relationship.

3. The method of claim 2, wherein the sending downlink data to the ue through the fixed access link and the mobile access link according to the binding relationship specifically comprises:

and carrying out flow distribution according to the transmission capacities of the fixed link and the mobile link, and respectively sending downlink data to the user equipment through the fixed access link and the mobile access link according to the distribution proportion.

4. A method according to any of claims 1-3, wherein the method is performed by a user plane device configured according to a fixed access identity or a mobile access identity of the user equipment.

5. A method of data transmission, comprising:

receiving the same IP address distributed by the network equipment for the fixed access and the mobile access of the user equipment;

establishing a fixed access link and a mobile access link between the fixed access link and network equipment, wherein a session identifier of the fixed access link and a tunnel identifier of the mobile access link have a binding relationship;

transmitting data of the user equipment through the fixed access link and the mobile access link respectively;

the transmitting the data of the user equipment through the fixed access link and the mobile access link respectively specifically includes:

respectively sending the same uplink data through the fixed access link and the mobile access link;

receiving first downlink data sent by a fixed access link and second downlink data sent by a mobile access link, and if the first downlink data and the second downlink data are from the same network equipment, combining the first downlink data and the second downlink data;

before receiving the same IP address allocated by the network device for the fixed access and the mobile access of the user equipment, the method further includes:

respectively sending a fixed access request and a mobile access request, wherein the fixed access request comprises a fixed access identifier of a user, the mobile access request comprises a mobile access identifier of the user, and the mobile access request is an attachment request or a service request.

6. The method of claim 5, wherein the transmitting data of the user equipment via the fixed access link and the mobile access link respectively specifically comprises:

and carrying out flow distribution according to the transmission capacities of the fixed link and the mobile link, and respectively sending uplink data to network equipment through the fixed access link and the mobile access link according to the distribution proportion.

7. A network device, comprising: the system comprises an address allocation unit, a link establishment unit and a data transmission unit; wherein:

the link establishing unit is used for establishing a fixed access link and a mobile access link between the user equipment and the link establishing unit, and establishing a binding relationship between a session identifier of the fixed access link and a tunnel identifier of the mobile access link;

the data transmission unit is used for transmitting the data of the user equipment through the fixed access link and the mobile access link according to the binding relationship;

the data transmission unit, according to the binding relationship, respectively transmitting the data of the user equipment through the fixed access link and the mobile access link specifically includes:

the data transmission unit receives first uplink data sent by a fixed access link and second uplink data sent by a mobile access link of user equipment, and if the first uplink data and the second uplink data are determined to be from the same user equipment according to the binding relationship, the first uplink data or the second uplink data are combined;

the address allocating unit is further configured to determine that the received fixed access request and the mobile access request are from the same user equipment according to a matching relationship between a fixed access identifier of the user and a mobile access identifier of the user before allocating the same IP address for the fixed access and the mobile access of the user equipment, where the fixed access request includes the fixed access identifier of the user, the mobile access request includes the mobile access identifier of the user, and the mobile access request is an attach request or a service request.

8. The network device of claim 7, wherein the data transmission unit, according to the binding relationship, transmits the data of the user equipment through the fixed access link and the mobile access link respectively specifically includes:

and the data transmission unit receives downlink data with the destination IP address of the user equipment and respectively sends the downlink data to the user equipment through the fixed access link and the mobile access link according to the binding relationship.

9. The network device of claim 8, wherein the sending, by the data transmission unit, downlink data to the user equipment through the fixed access link and the mobile access link according to the binding relationship respectively specifically includes:

the data transmission unit distributes flow according to the transmission capacity of the fixed link and the mobile link, and sends downlink data to the user equipment through the fixed access link and the mobile access link according to the distribution proportion.

10. A network device according to any of claims 7-9, wherein the network device is a user plane device.

11. A user equipment comprising a mobile access unit, a fixed access unit and a processing unit, wherein:

the fixed access unit is used for receiving the same IP address distributed by the network equipment for the fixed access of the user equipment, establishing a fixed access link with the network equipment, and the session identifier of the fixed access link and the tunnel identifier of the mobile access link have a binding relationship;

the processing unit is configured to transmit data of the user equipment through the fixed access link and the mobile access link respectively;

the transmitting, by the processing unit, data of the user equipment through the fixed access link and the mobile access link respectively specifically includes:

the processing unit sends the same uplink data through the fixed access link and the mobile access link respectively;

the processing unit receives first downlink data sent by a fixed access link and second downlink data sent by a mobile access link, and if the first downlink data and the second downlink data are from the same network equipment, the first downlink data and the second downlink data are combined;

the mobile access unit and the fixed access unit respectively send a fixed access request and a mobile access request before receiving an IP address allocated by network equipment, wherein the fixed access request comprises a fixed access identifier of a user, the mobile access request comprises a mobile access identifier of the user, and the mobile access request is an attachment request or a service request.

12. The ue of claim 11, wherein the processing unit transmits data of the ue through the fixed access link and the mobile access link respectively specifically includes:

the processing unit distributes flow according to the transmission capacities of the fixed link and the mobile link, and respectively sends uplink data to network equipment through the fixed access link and the mobile access link according to the distribution proportion.

13. A computer-readable storage medium, having stored therein at least one program code, which is loaded and executed by a processor to implement the method according to any one of claims 1 to 4.

14. A computer-readable storage medium, having stored therein at least one program code, which is loaded and executed by a processor to implement the method according to any one of claims 5 to 6.