WO2018223304A1

WO2018223304A1 - Method and apparatus for transmitting data

Info

Publication number: WO2018223304A1
Application number: PCT/CN2017/087399
Authority: WO
Inventors: 蔡仕江; 章国梁; 袁立平; 雒启明
Original assignee: 华为技术有限公司
Priority date: 2017-06-07
Filing date: 2017-06-07
Publication date: 2018-12-13
Also published as: CN110710167B; CN110710167A

Abstract

Provided are a method and apparatus for transmitting data. The method comprises: a network device allocating the same IP address for fixed access and mobile access of a user equipment; establishing a fixed access link and a mobile access link with the user equipment, and establishing a binding relationship between the fixed access link and the mobile access link; and according to the binding relationship, respectively transmitting data of the user equipment by means of the fixed access link and the mobile access link. The present invention increases the network bandwidth and reduces the data transmission delay by means of allocating the same IP address to a UE and by binding the two links, i.e. a fixed access link and a mobile access link.

Description

Method and device for data transmission

Technical field

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

Background technique

At present, smartphones have been widely used, and fourth-generation (4G) mobile communication networks have also been deployed on a large scale. Current smartphones usually have access to mobile networks, such as 2G/3G/4G mobile communication networks, as well as fixed networks, such as digital subscriber line (DSL) and fiber-to-the-home (WiFi) via WiFi. Fiber To The Home, FTTH), etc. Users can use a smartphone to access the Internet through a mobile network or a fixed network in different scenarios, such as using a fixed network at home or in the office, and using a mobile network for outdoor activities.

The future 5G (Fifth Generation) network proposes further high bandwidth and low latency requirements, such as Internet of Things, online medical, smart factories and so on. How to further improve the bandwidth of data transmission between user equipment and network and reduce communication delay is an urgent problem to be solved.

Summary of the invention

Embodiments of the present invention provide a data transmission method and apparatus, which improve network bandwidth and reduce data transmission delay.

In a first aspect, an embodiment of the present invention provides a data transmission method, where the method includes: the network device allocates the same IP address to the fixed access and the mobile access of the user equipment UE, and establishes a fixed connection with the user equipment. Accessing the link and the mobile access link, and then establishing a binding relationship between the fixed access link and the mobile access link, and the data of the UE is respectively passed through the fixed access link and the mobile access link according to the binding relationship. The road is transmitted.

The above method improves the network bandwidth and reduces the data transmission delay by allocating the same IP address to the UE and binding the fixed access dual link.

In a possible design, the network device receives the downlink data of the user equipment with the destination IP address, and sends the downlink data to the user equipment through the fixed access link and the mobile access link according to the binding relationship. Thereby, 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 the 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 the allocated ratio. Thereby the flexibility of downlink data transmission is further improved.

In another possible design, the network device receives the first uplink data sent by the user equipment by the fixed access link and the second uplink data sent by the mobile access link, and merges the first uplink data or the second according to the binding relationship. Upstream data. Thereby, the network bandwidth of the uplink data is increased, and the data transmission delay is reduced.

In a further possible design, the network device determines that the received fixed access request and the mobile access request are from the same user equipment according to the matching relationship between the fixed access identifier and the mobile access identifier of the user, and the fixed access request includes The user's fixed access identifier, and the mobile access request includes the user's mobile access identifier. Thereby the accuracy of user identification is further improved.

In yet another possible design, the network device performing the above 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 equipment. Therefore, the above method is applicable to the 5G environment, and the system flexibility is improved.

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

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

In yet another possible design, the UE performs traffic allocation according to the transmission capabilities of the fixed link and the mobile link, and sends uplink data to the network device through the fixed access link and the mobile access link according to the allocated ratio. Thereby, the network bandwidth of the uplink data is increased, and the data transmission delay is reduced.

In yet another possible design, the UE transmits the same uplink data through the fixed access link and the mobile access link, respectively. Thereby improving data transmission reliability and reducing data transmission delay.

In yet another possible design, the UE sends a fixed access request and a mobile access request, where the fixed access request includes the user's fixed access identifier, and the mobile access request includes the user's mobile access identifier. Thereby the network device accurately identifies the same UE.

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

In a possible design, the structure of the user equipment includes a processor and a memory, and the memory is used for storage support. The user device executes the application code of the above method, and the processor is configured to execute the program stored in the memory. The user equipment 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 the function of implementing network device behavior in the foregoing method. The functions can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more units corresponding to the functions described above.

In one possible design, the structure of the user equipment includes a processor and a memory for storing application code supporting the network device to perform the above method, and the processor is configured to execute the program stored in the memory. The network device can 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 used by the network device or user equipment, which includes a program designed to perform the above aspects.

The foregoing technical solution provided by the embodiment of the present invention increases the network bandwidth and reduces the data transmission delay by allocating the same IP address to the UE and binding the fixed-shift access dual link.

DRAWINGS

1 is a system architecture diagram of a solid-transfer binding according to an embodiment of the present invention;

2 is a system architecture diagram of another solid-transfer binding according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a method for solid-transfer binding according to an embodiment of the present disclosure;

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 schematic flowchart of another method for solid-binding binding according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of proportionally allocated downlink data 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 disclosure;

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

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

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 example of a system for implementing a fixed mobility binding, where the network side device includes a mobile network device and a fixed network device. The device in Fig. 1 will be specifically described below.

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

The mobile network can be any mobile network of 2G, 3G, 4G or any future 5G. FIG. 1 takes a 4G network architecture as an example, including a base station 102, a Mobility Management Entity (MME) 103, and a gateway device 104. The MME 103 is used for user equipment radio access control, mobility management, and the like. The gateway device 104 includes a Serving GateWay (S-GW) and a PDN Gateway (P-GW) for allocating user IP addresses, managing connections with user equipments, and connecting users to the Internet.

Fixed networks can use broadband technologies such as DSL or FTTH. 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 configured to connect the user equipment to a fixed network, such as a WiFi router, to connect the smart phone to the fixed network. The BAS is connected to the gateway device. For example, the gateway device 104 can be accessed through the S2a interface of the 4G architecture, and the user equipment can access the Internet through a fixed link.

The system shown in FIG. 1 further includes a user database 107 for managing mobile access related information and fixed access related information of the user. For example, the user database 107 may include user information in an HSS (Home Subscriber Server) of a mobile network and user information of an AAA (Authentication, Authorization, Accounting) server in a 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 when the network device receives the mobile access request or the fixed access request of the user equipment, the mobile device determines the mobile according to the matching relationship. The access request and the fixed access request are from the same user equipment, and can be fixed and bound. Table 1 below is an example of a user information table.

序号Serial number	用户手机号User phone number	IMSIIMSI	固定接入用户名Fixed access username	固定接入密码Fixed access password
11	1390001000113900010001	460030912121001460030912121001	User001@SP1.com User001@SP1.com		xxx1Xxx1
22	1390001000213900010002	460030912121002460030912121002	User002@SP1.comUser002@SP1.com	xxx2Xxx2
......	......	......	......	......

Table 1, examples of user information tables

The mobile access identifier of the user equipment may be the “user mobile phone number” in Table 1, or the “International Mobile Subscriber Identification Number” (IMSI), and the fixed access identifier of the user equipment may be in Table 1. "Fixed access username". Through the manner of Table 1, the matching relationship between the mobile access identifier and the fixed access identifier is established.

Figure 2 shows an example of a system for implementing solid-mobile binding in a 5G network environment. In a 5G network, the control functions and data transmission functions of the S-GW and P-GW can be separated, respectively. Control Plane and User Plane sections. In the system shown in FIG. 2, the control plane device 203 may have functions including a mobility management entity MME function and a control function portion of the S-GW and the P-GW. These three functions may be combined or divided. The user plane device 204 in FIG. 2 may function as a user plane portion of the S-GW and the P-GW. Other devices in Figure 2, such as BAS, user database, etc., have the same functions as in Figure 1.

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

Table 2, an example of a user information table

In Table 2, the first two user devices are configured with UP1, and the latter user devices are configured with UP2. The configuration can be configured according to the policy such as the number segment of the user's mobile phone number.

As shown in FIG. 3, an embodiment of the present invention further provides a method for solid-binding binding, which is applied to the system shown in FIG. 1. Steps 301-330 are a process in which the UE accesses the mobile network, and steps 306-310 are processes in which the UE accesses the fixed network. Specifically, the following steps are included:

301. The UE sends a mobile access request by using a base station.

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

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

Specifically, the MME may perform identity authentication according to the 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 a query request message carrying the mobile access identifier of the user, for example, an IMSI or a user mobile number. According to the user information table shown in Table 1, the user database obtains the corresponding fixed access identifier, such as the fixed access user name, according to the mobile access identifier carried in the query request. The user database returns a query response message to the gateway device, which carries the fixed access username.

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

After receiving the query response message, the gateway device queries the session context according to the username. If the user equipment does not have access through the fixed network before, and there is no fixed access link of the same user equipment in the session context, the gateway device allocates a new IP address to the user equipment, and establishes a mobile access link with the user equipment. Establishing a mobile access link includes assigning a Tunnel End Point Identifier (TEID) of the GPRS Tunneling Protocol (GTP); the gateway device records information about the mobile access link, including the TEID, in the session context, and then Go to step 306.

If the user equipment has been connected to the fixed network before, the fixed access link of the same user already exists in the session context. For example, if a Point to Point Protocol over Ethernet (PPPoE) connection with the user equipment is established, the user equipment is the user equipment. The same IP address is allocated for the mobile access link, and a mobile access link with the user equipment is established, and the established mobile access with the user equipment is bound to the established fixed access.

One method of binding is that the TEID of the GPRS tunneling protocol allocated for mobile access is consistent with the session ID of the PPPoE assigned to the fixed access. In the example shown in Figure 4, the sessionID consists of two parts, including a thread number and a sequence number. The TEID supported by the PPPoE protocol is 16 bits, and the TEID supported by the LTE protocol is 32 bits. Therefore, when a TEID is allocated, a part of the bits in the TEID can be matched with the token and the sequence, and the remaining bits can be filled with "0". In Figure 4, bit 0-9 of TEID is consistent with the sequence of sessionID, bit 18-25 is consistent with the token of sessionID, and the remaining bits can 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 assigned session ID of the fixed access and the TEID of the mobile access in Table 3, so that the TEID allocation is more flexible.

序号Serial number	SessionIDSessionID		TEIDTEID
11	00010001	0013001100130011
22	00020002	0013001200130012
......	......	......

Table 3, Example of a solid transfer binding relationship table

It should be noted that the user equipment may perform fixed access first or mobile access first. If it is first fixed If the access is fixed, the two links are fixed and bound in this step. If the mobile access is performed first, the two links are fixed and then bound in the following step 309.

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

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

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

The user equipment can access the fixed network through an access point, such as a WiFi router. The access request contains the user's fixed access identifier, such as the access user name and password.

307. The BAS server performs identity authentication on the UE, and the identity authentication is performed according to the username and password carried in the fixed access request. After the authentication is passed, an activation request is sent to the gateway device. The activation request carries the fixed access identifier of the above 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, a fixed access user name of the user equipment. The user database obtains a corresponding mobile access identifier, such as an IMSI or a user mobile phone number, according to the fixed access identifier carried in the query request according to the user information table as shown in Table 1. The user database then returns a query response message to the gateway device carrying the mobile access identity.

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

After receiving the query response message, the gateway device queries the session context according to the mobile access identifier. If the mobile access link of the same user already exists, for example, a GTP tunnel has been established for the same user equipment, the same is assigned to the user equipment. The IP address is used to fix the access link, and a 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 to establish a PPPoE connection with the user equipment and assign a session ID sessionID for the PPPoE connection.

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

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

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

After the above steps 306-310, the fixed access process of the user equipment is completed, and a fixed link is established between the user equipment and the gateway equipment.

As shown in FIG. 5, the embodiment of the present invention further provides another method for solid-binding binding, which is applied to the system shown in FIG. 2. Steps 501-516 are processes for the user equipment UE to access the mobile network, and steps 507-516 are processes for the UE to access the fixed network. In this example, a user information table as shown in Table 2 is configured in the user database. Specifically, the following steps are included:

501. The UE sends a mobile access request to the control plane device by using the base station.

502. 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 mobile access identifier of the user equipment, for example, an IMSI or a user mobile number. The user database obtains the corresponding fixed access identifier, such as the fixed access user name and the corresponding password, according to the user information table as shown in Table 2 and the mobile access identifier of the user equipment. The user database also queries the information of the user plane device UP corresponding to the user equipment UE, such as the IP address of the UP. In this embodiment, it is assumed that the current user is assigned UP1. The user database carries the fixed access identifier of the user equipment and the information of the user plane device UP corresponding to the user equipment in the query response message returned to the control plane device.

503. After receiving the query response message, the control plane device performs identity authentication. If the authentication succeeds, the device 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.

504. The user plane device UP1 queries the user database to obtain a corresponding fixed access identifier.

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 user equipment does not access the fixed network before, the session context does not have a fixed access link of the same user equipment. UP1 allocates a new IP address to the user equipment, and establishes a mobile access link with the user equipment. The mobile access link includes a Tunnel End Point Identifier (TEID) that allocates a GPRS Tunneling Protocol (GTP); the UP1 records information about the mobile access link in the session context, including the assigned user equipment IP address. And the TEID, and then return an activation response message to the control plane device, where the activation response message carries the assigned user equipment IP address and TEID.

If the user equipment has been connected to the fixed network before, the fixed access link of the same user already exists in the session context. For example, if a Point to Point Protocol over Ethernet (PPPoE) connection with the user equipment is established, the user equipment is the user equipment. Allocating the same IP address as the fixed access IP address, assigning the tunnel identification TEID of the GPRS tunneling protocol, establishing a mobile access link with the user equipment, and establishing the established mobile access with the user equipment and established Fixed access binding. Then returning an activation response message to the control plane device, the activation response message carrying the assignment User device IP address and TEID.

One method of binding is that the TEID of the GPRS tunneling protocol allocated for mobile access is consistent with the session ID of the PPPoE assigned to the fixed access. The same as the example shown in FIG. 4 described above.

The other method of binding is the same as the example in Table 3 above, and the assigned fixed access session ID and the mobile access TEID are recorded in the binding relationship table.

It should also be noted that the user equipment can perform fixed access first or mobile access first. If the fixed access is performed first, the two links are fixed and bound in this step. If the mobile access is performed first, the fixed two links are bound when the fixed access is followed.

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

After the foregoing 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 equipment UP1.

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

508. The BAS server performs identity authentication on the UE, and the identity authentication is performed according to the username and password carried in the fixed access request. After the authentication is passed, an activation request is sent to the user plane devices UP1 and UP2 connected thereto. User plane device UP1 and user plane device UP2 forward the activation request to the control plane device. The activation request carries the fixed access identifier 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 equipment. The user database, according to the user information table as shown in Table 2, and the fixed access identifier of the user equipment, match the information of the user plane device UP corresponding to the user equipment, for example, the IP address of the UP, which is assumed to be the current user allocation in this embodiment. It is UP1. The user database carries the information of the user plane device UP corresponding to the user equipment in the query response message returned to the control plane device.

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

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, where the IP address of the user plane device UP1 is carried.

512. After receiving the activation response, the user equipment initiates an activation request, where the destination address is an IP address of the user plane device UP1, and also includes a 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.

514. The user plane device UP1 queries the user database to obtain a corresponding mobile access identifier, for example, an IMSI or a user mobile 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 saved session context based on the mobile access identity. If the user equipment has previously accessed through the mobile network, the session context includes information about the mobile access link of the same user equipment. For example, if a GTP tunnel for the same user equipment has been established, the user equipment is assigned the same IP address. It is used to fix the access link and establish a fixed access link with the user equipment, and bind the established fixed access with the user equipment to the established mobile access. An example of establishing a fixed access link is to establish a PPPoE connection with the user equipment and assign a session ID sessionID for the PPPoE connection.

516. After receiving the activation response message, the BAS returns a fixed access response to the user equipment.

After the above steps 507-516, 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 equipment UP.

Through the corresponding embodiment shown in FIG. 3 or FIG. 5 above, a network device, such as a gateway device or a user plane device, establishes a fixed access link and a mobile access link with a binding relationship between the user equipment and the UE. User uplink data and downlink data can be transmitted on these two links.

The network device may configure a certain allocation policy, and determine a certain allocation ratio according to the allocation policy to allocate downlink data between the fixed access link and the mobile access link. For example, distribution decisions can be made based on the processing capabilities of the mobile link and the fixed link. The mobile access link transmission capability parameters may include a radio link MBR (maximum bit rate maximum bit rate) and a scheduling delay of the base station eNodeB. The transmission capability of the fixed access link is relatively small, and the parameters configured by the fixed network device may be used, or may be fed back by the UE. The link transmission capability parameters are usually stored in the link context information of the network device.

An example of a proportional allocation is that after the downlink message arrives at the network device, it is allocated to the fixed access link and the mobile access link according to the link transmission capability for transmission. The link allocation ratio is calculated as:

Link n ratio = link n transmission capacity / (sum of

link

1, 2, ... N transmission capacity) * 100%

For example, if the LTE transmission rate of the mobile access link is 80 kbps and the DSL transmission rate of the fixed access link is 120 kbps, the proportion of the mobile access link is: 80/(80+120)=40%, fixed access chain. The road ratio is: 120/(80+120)=60%. Four out of every ten messages are sent over the mobile access LTE link and six are sent over the fixed access DSL link.

After determining the data transmission ratio of the two links, the network device allocates the transmission to the received downlink data according to a determined ratio. For example, the mobile access link and the fixed access link respectively determine a ratio of 40% and 60%, and for the downlink data stream sent from the Internet to the user equipment, 2 out of every 5 data packets are allocated from the mobile access chain. Road transmission, allocation 3 transmissions from the fixed access link. After receiving the downlink data of two different links, the user equipment recombines into a complete data stream.

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

The user equipment transmits the uplink data that needs to be transmitted through the mobile access link and the fixed access link in a 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 fixed access link are from the same user according to the stored fixed-binding binding relationship table as shown in Table 3. Devices then recombine them into a complete upstream stream.

In some application scenarios, low-latency, high-reliability data transmission is required, and downlink data and uplink data can be redundantly transmitted, that is, all the same data is transmitted on the fixed access link and the mobile access link. For example, in some industrial enterprises, the data transmission of the production system needs to be low-latency and high-reliability, and special wireless access coverage can be performed to ensure that the fixed-access dual-connection and data redundancy transmission are always maintained during the application.

Figure 6 shows an example of proportional allocation of downstream data. A network device, such as a gateway device or a user plane device UP, which may include a Multi-Link Control (MLC) module for controlling the received downlink data according to the proportion of the allocation on the fixed access link and The mobile access link is separately transmitted to the user equipment. The process of allocating the delivered data package specifically includes:

After receiving the downlink data, the network device finds the user context and performs service processing. The MLC module calculates the data distribution ratio of the downlink data on the two links of the fixed access and the mobile access according to the foregoing method. Then, the sequence number SN of the transmitted Packet Data Convergence Protocol (PDCP) is obtained and added to the PDCP protocol header. (If the SN after adding 1 is greater than the maximum SN, then SN is equal to 0). If sent over the mobile access link, then The user downlink packet with the PDCP protocol header is used to find the bearer context according to the user data context, and the GTP header is constructed and sent to the base station through the GTP protocol, and the base station further sends the downlink data to the user equipment. If the packet is transmitted through the fixed access link, the downlink packet of the user with the PDCP protocol header is found according to the user data context, the PPPoE header is constructed, and the PPPoE protocol information such as the SessionID is filled and sent to the fixed access server BAS. Further sent to the user device.

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 sequence number SN, and recovers the downlink data.

In a redundant transmission example shown in Figure 7, all five packets of the upstream data stream are transmitted on both links. When the network device finally arrives, the fixed access link may lose the data packet 2, and the mobile access link loses the data packet 3. However, after the network device deduplicates and merges the data packet, the complete data stream can still be obtained.

The solution of the foregoing embodiment improves the network bandwidth and reduces the data transmission delay by allocating the same IP address to the UE and binding the fixed access dual link.

The 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, and a processing unit 803. among them:

a mobile access unit, configured to receive an IP address allocated by the network device for user equipment mobile access, and establish a mobile access link with the network device;

a fixed access unit, configured to receive a same IP address allocated by the network device for the fixed access of the user equipment, and establish a fixed access link with the network device;

The processing unit is configured to transmit data of the user equipment by using the fixed access link and the mobile access link, respectively.

Further, these units implement related steps performed by the user equipment in the foregoing method embodiments, and details are not described herein.

In this embodiment, the user equipment is presented in the form of a functional unit. A "unit" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device. In a simple embodiment, those skilled in the art will appreciate that the user equipment can be implemented using a processor, a memory, and a communication interface.

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

The processor 901 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention.

Communication bus 902 can include a path for communicating information between the components described above.

The memory 903 can 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 that can store information and instructions. The dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this. The memory can exist independently and be connected to the processor via a bus. The memory can also be integrated with the processor.

The memory 903 is used to store application code for executing the solution of the present invention, and is controlled by the processor 901 for execution. The processor 901 is configured to execute application 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 processor or a multi-core processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.

The mobile access interface 904 uses devices such as any transceiver for communicating with other mobile communication networks, such as 2G, 3G, 4G, and even 5G mobile communication networks.

The fixed access interface 905 uses a device such as any transceiver for communicating with other fixed network devices, such as Ethernet, Wireless Local Area Networks (WLAN), and the like.

In a particular implementation, as an embodiment, the computer device can also include an input/output (I/O) interface 906. 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, or a projector. . The input device can be a mouse, a keyboard, a touch screen device, or a sensing device.

The computer device described above 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 portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, or the like in FIG. Structured equipment. The embodiment of the invention does not limit the type of user equipment.

The user equipment in FIG. 1 may be the device shown in FIG. 9, and one or more software modules are stored in the memory 903. The user equipment can implement the software module by executing the program code in the processor and the program code in the memory.

The embodiment of the present invention further provides a computer storage medium for storing computer software instructions used in the apparatus shown in FIG. 8 or FIG. 9 above, which includes a program designed to execute the foregoing method embodiments. The above method can be implemented by executing a stored program.

The embodiment of the present invention further provides a schematic structural diagram of a network device, as shown in FIG. 10, including: an address allocation unit 1001, a link establishing unit 1002, and a data transmission unit 1003. among them:

The address allocation unit is configured to allocate the same IP address for the fixed access and the mobile access of the user equipment;

The link establishing unit is configured to establish a fixed access link and a mobile access link with the user equipment, and establish a binding relationship between the fixed access link and the mobile access link;

The data transmission unit is configured to transmit data of the user equipment according to the binding relationship by using the fixed access link and the mobile access link, respectively.

Further, these units implement the functions of the related steps performed by the gateway device or the user plane device in the foregoing method embodiments, and details are not described herein.

In this embodiment, the network device is presented in the form of a functional unit. A "unit" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device. In a simple embodiment, those skilled in the art will appreciate that network devices can be implemented using processors, memory, and communication interfaces.

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

The processor 1101 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention.

Communication bus 1102 can include a path for communicating information between the components described above. The communication interface 1104 uses devices such as any transceiver for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), and the like.

The memory 1103 can be a read-only memory (ROM) or can store static information and instructions. Other types of static storage devices, random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only) Memory, EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), 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, without limitation. The memory can exist independently and be connected to the processor via a bus. The memory can also be integrated with the processor.

The memory 1103 is configured to store application code for executing the solution of the present invention, and is controlled by the processor 1101 to execute. The processor 1101 is configured to execute application code stored in the memory 1103.

In a specific implementation, the processor 1101 may include one or more CPUs, and each CPU may be a single-core processor or a multi-core processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.

In a particular implementation, as an embodiment, the computer device can also include an input/output (I/O) interface 1105. 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, or a projector. . The input device can be a mouse, a keyboard, a touch screen device, or a sensing device.

The computer device described above 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 portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet, a wireless terminal device, a communication device, an embedded device, or the like in FIG. Structured equipment. Embodiments of the invention do not limit the type of computer device.

The gateway device in FIG. 1 or the user plane device in FIG. 2 may be the network device shown in FIG. 11, and one or more software modules are stored in the memory 1103. The network device can implement the above method by implementing the software module through the processor and the program code in the memory.

The embodiment of the present invention further provides a computer storage medium for storing computer software instructions used in the apparatus shown in FIG. 10 or FIG. 11 above, which includes a program designed to execute the foregoing method embodiments. The above method can be implemented by executing a stored program.

Although the present invention has been described herein in connection with the embodiments of the present invention, it will be understood by those skilled in the <RTIgt; Other variations of the disclosed embodiments are achieved. In the claims, the word "comprising" does not exclude other components or The steps "one" or "one" do not exclude multiple instances. A single processor or other unit may fulfill several of the functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that the measures are not combined to produce a good effect.

Those skilled in the art will appreciate that embodiments of the present invention can 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 a combination of software and hardware. Moreover, the invention can 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, etc.) including computer usable program code. The computer program is stored/distributed in a suitable medium, provided with other hardware or as part of the hardware, or in other distributed forms, such as over 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 the methods, apparatus, and computer program products of the embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the invention has been described in connection with the specific features and embodiments thereof, various modifications and combinations are possible. Accordingly, the specification and drawings are to be construed as the It will be apparent to those skilled in the art that various modifications and changes can be made in the present invention without departing from the scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A method for data transmission, comprising:

Assigning the same IP address to the fixed access and mobile access of the user equipment;

Establishing a fixed access link and a mobile access link with the user equipment, and establishing a binding relationship between the fixed access link and the mobile access link;

Data of the user equipment is transmitted through the fixed access link and the mobile access link according to the binding relationship.
The method according to claim 1, wherein the transmitting the data of the user equipment according to the binding relationship by using the fixed access link and the mobile access link respectively comprises:

And receiving the downlink data of the user equipment, and sending the downlink data to the user equipment by using the fixed access link and the mobile access link according to the binding relationship.
The method according to claim 2, wherein the transmitting the downlink data to the user equipment by using the fixed access link and the mobile access link according to the binding relationship includes:

The traffic is allocated according to the transmission capability of the fixed link and the mobile link, and the downlink data is sent to the user equipment by using the fixed access link and the mobile access link according to the allocated ratio.
The method according to claim 1, wherein the transmitting the data of the user equipment according to the binding relationship by using the fixed access link and the mobile access link respectively comprises:

And receiving, by the user equipment, the first uplink data sent by the fixed access link and the second uplink data sent by the mobile access link, and combining the first uplink data or the second uplink data according to the binding relationship.
The method according to any one of claims 1-4, wherein the establishing a binding relationship between the fixed access link and the mobile access link comprises:

And establishing a binding relationship between the session identifier of the fixed access link and the tunnel identifier of the mobile access link.
The method of claim 1-5, further comprising: before assigning the same IP address to the fixed access and the mobile access of the user equipment,

Determining the received fixed access request and shift according to the matching relationship between the fixed access identifier of the user and the mobile access identifier The mobile access request is from the same user equipment, and the fixed access request includes the user's fixed access identifier, and the mobile access request includes the user's mobile access identifier.
The method of any of claims 1-6, wherein the method is performed by a user plane device, the user plane device being configured according to a fixed access identifier or a mobile access identity of the user equipment.
A method for data transmission, comprising:

Receiving the same IP address allocated by the network device for the fixed access and the mobile access of the user equipment;

Establishing a fixed access link and a mobile access link with the network device;

Data of the user equipment is transmitted through the fixed access link and the mobile access link, respectively.
The method according to claim 8, wherein the transmitting the data of the user equipment by using the fixed access link and the mobile access link respectively comprises:

And receiving the first downlink data sent by the fixed access link and the second downlink data sent by the mobile access link, and combining the first downlink data or the second downlink data.
The method according to claim 8 or 9, wherein the transmitting the data of the user equipment by using the fixed access link and the mobile access link respectively comprises:

The traffic is allocated according to the transmission capability of the fixed link and the mobile link, and the uplink data is sent to the network device by using the fixed access link and the mobile access link according to the allocated ratio.
The method according to claim 8 or 9, wherein the transmitting the data of the user equipment by using the fixed access link and the mobile access link respectively comprises:

The same uplink data is sent through the fixed access link and the mobile access link, respectively.
The method of claim 8-11, further comprising: 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 comprising:

A fixed access request and a mobile access request are respectively sent, 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.
A network device, comprising: an address allocation unit, a link establishing unit, and a data transmission list Yuan; where:

The address allocation unit is configured to allocate the same IP address for the fixed access and the mobile access of the user equipment;

The link establishing unit is configured to establish a fixed access link and a mobile access link with the user equipment, and establish a binding relationship between the fixed access link and the mobile access link;

The data transmission unit is configured to transmit data of the user equipment according to the binding relationship by using the fixed access link and the mobile access link, respectively.
The network device according to claim 13, wherein the data transmission unit transmits the data of the user equipment through the fixed access link and the mobile access link according to the binding relationship, and specifically includes:

The data transmission unit receives the downlink data of the user equipment with the destination IP address, and sends downlink data to the user equipment by using the fixed access link and the mobile access link according to the binding relationship.
The network device according to claim 14, wherein the data transmission unit sends downlink data to the user equipment through the fixed access link and the mobile access link according to a binding relationship, including :

The data transmission unit performs traffic allocation according to the transmission capability 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 allocated ratio.
The network device according to claim 13, wherein the data transmission unit transmits the data of the user equipment through the fixed access link and the mobile access link according to the binding relationship, and specifically includes:

The data transmission unit receives the first uplink data sent by the user equipment by the fixed access link and the second uplink data sent by the mobile access link, and merges the first uplink data or the second uplink according to the binding relationship. data.
The network device according to any one of claims 13-16, wherein the binding establishment unit establishes a binding relationship between the fixed access link and the mobile access link, including:

The link establishing unit establishes a binding relationship between a session identifier of the fixed access link and a tunnel identifier of the mobile access link.
The network device according to any one of claims 13-17, wherein the address allocating unit is further configured to: before the same IP address is allocated for the fixed access and the mobile access of the user equipment, according to the user The matching relationship between the fixed access identifier and the mobile access identifier determines that the received fixed access request and the mobile access request are from the same user setting The fixed access request includes a fixed access identifier of the user, where the mobile access request includes a mobile access identifier of the user.
A network device according to any of claims 13-18, wherein said network device is a user plane device.
A user equipment, comprising: a mobile access unit, a fixed access unit and a processing unit, wherein:

The mobile access unit is configured to receive an IP address allocated by the network device for user equipment mobile access, and establish a mobile access link with the network device;

The fixed access unit is configured to receive a same IP address allocated by the network device for the fixed access of the user equipment, and establish a fixed access link with the network device;

The processing unit is configured to transmit data of the user equipment by using the fixed access link and the mobile access link, respectively.
The user equipment according to claim 20, wherein the transmitting, by the processing unit, the data of the user equipment by using the fixed access link and the mobile access link, respectively, specifically includes:

The processing unit receives the first downlink data sent by the fixed access link and the second downlink data sent by the mobile access link, and combines the first downlink data or the second downlink data.
The user equipment according to claim 20 or 21, wherein the transmitting, by the processing unit, the data of the user equipment by using the fixed access link and the mobile access link, respectively, specifically includes:

The processing unit performs traffic allocation according to the transmission capability of the fixed link and the mobile link, and sends uplink data to the network device through the fixed access link and the mobile access link according to the allocated ratio.
The user equipment according to claim 20 or 21, wherein the transmitting, by the processing unit, the data of the user equipment by using 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 user equipment according to any one of claims 20-23, wherein the mobile access unit and the fixed access unit respectively send a fixed access request and a mobile access request before receiving the IP address allocated by the network device. The fixed access request includes a fixed access identifier of the user, where the mobile access request includes a mobile access identifier of the user.