WO2010081368A1

WO2010081368A1 - Method and device for transmitting, transporting and receiving data, and method and device for constructing local area network

Info

Publication number: WO2010081368A1
Application number: PCT/CN2009/075816
Authority: WO
Inventors: 李冠臣
Original assignee: 华为技术有限公司
Priority date: 2009-01-15
Filing date: 2009-12-22
Publication date: 2010-07-22
Also published as: CN101489221A; CN101489221B

Abstract

A method and device for transmitting, transporting and receiving data, and a method and device for constructing a local area network are disclosed in the embodiments of the present invention. The method for transporting data includes the steps of: assigning local area network addresses to the User Equipments (UEs) belonging to the same base station; receiving the data transmitted by a source UE, wherein the data carry a target local area network address; transmitting the data to the target UE corresponding to the target local area network address according to the target local area network address. According to the embodiments of the present invention, it is possible to assign local area network addresses to UEs by an Evolved Node B (eNB), so that the source UE can directly transmit the data to the target UE through the eNB without needing to perform a forwarding processing on the data transmitted from the source UE by an Evolved Packet Core (EPC), thereby saving the routing resources of the EPC and reducing the dependence on the EPC.

Description

Data transmission, transmission and reception method and device, local area network establishment method and device The application is submitted to the Chinese Patent Office on January 15, 2009, and the application number is 200910076682.3, and the invention name is "data transmission, transmission, reception method and device, local area network The priority of the Chinese patent application for establishing a method and apparatus.

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a data transmission, transmission, and receiving method and apparatus, and a local area network establishing method and apparatus. Background technique

Evolved Universal Mobile Telecommunication System Territorial Radio Access Network (E-UTRAN) and Evolved Packet Core (EPC) constitute the evolution of the Universal Mobile Telecommunication System (UMT). Evolved Packet System (EPS) E-UTRAN consists of an evolved Node B (eNB), which is interconnected by X2 interfaces. Each eNB is separately associated with the EPC mobility management entity (Mobility Management Entity). The MME and the Serving Gateway (SGW) are connected through the S1 interface.

In the above EPS, when the different terminals (User Equipments, UEs for short) of the same eNB communicate with each other, the data packets of the source UE need to be forwarded by the EPC to reach the destination UE, which wastes the routing resources of the EPC and also aggravates the eNB. The processing burden. Summary of the invention

The embodiments of the present invention provide a data transmission, transmission, and receiving method and apparatus, and a local area network establishing method and apparatus, which are used to save EPC routing resources, reduce the processing load of the eNB, and reduce the dependence on the EPC.

The embodiment of the invention provides a data transmission method, including:

Allocating a local area network address for a terminal under the same base station;

Receiving data sent by the source terminal, where the data carries a destination local area network address; Destination terminal.

The embodiment of the invention provides a data sending method, including:

Registered to the local area network under the base station;

Sending data carrying the destination local area network address to the base station.

The embodiment of the invention provides a data receiving method, including:

Registered to the local area network under the base station;

Receiving data transmitted by the base station.

An embodiment of the present invention provides a method for establishing a local area network, including:

Receiving a local area network mode request message sent by the terminal;

A local area network address is assigned to the terminal.

The embodiment of the invention further provides a data transmission device, including:

a first allocation module, configured to allocate a local area network address for the terminal under the same base station;

a first receiving module, configured to receive data sent by the source terminal, where the data carries a destination local area network address;

And a first sending module, configured to send the data to the destination terminal corresponding to the destination local area network address according to the destination local area network address.

The embodiment of the invention further provides a base station, comprising the above data transmission device.

The embodiment of the invention further provides a data sending device, comprising:

a first registration module, configured to register to a local area network under the base station;

The second sending module is configured to send data carrying the destination local area network address to the base station. An embodiment of the present invention further provides a terminal, including the foregoing data sending apparatus.

The embodiment of the invention further provides a data receiving device, including:

a second registration module, configured to register to a local area network under the base station;

The second receiving module is configured to receive data sent by the base station.

The embodiment of the invention further provides a terminal, comprising the above data receiving device.

The embodiment of the invention further provides a local area network establishing device, including:

The third receiving module is configured to receive an incoming LAN mode request message sent by the terminal, and a second assigning module, configured to allocate a local area network address to the terminal.

The embodiment of the present invention further provides a base station, including the foregoing local area network establishing apparatus. According to the foregoing technical solution, the eNB allocates a local area network address to the UE by using the eNB, so that the source UE can perform the forwarding process on the data sent by the source UE through the EPC, and directly sends the data to the target UE through the eNB. It saves EPC routing resources and reduces the dependence on EPC. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a schematic flowchart of a data transmission method according to Embodiment 1 of the present invention;

2 is a schematic flowchart of a data transmission method according to Embodiment 2 of the present invention;

3 is a schematic flowchart of a data transmission method according to Embodiment 3 of the present invention;

4 is a schematic flowchart of a data sending method according to Embodiment 4 of the present invention;

FIG. 5 is a schematic flowchart diagram of a data receiving method according to Embodiment 5 of the present invention;

6 is a schematic flowchart of a method for establishing a local area network according to Embodiment 6 of the present invention;

7 is a schematic flowchart of a method for establishing a local area network according to Embodiment 7 of the present invention;

8 is a schematic flowchart of a method for establishing a local area network according to Embodiment 8 of the present invention;

9 is a schematic structural diagram of a data transmission apparatus according to Embodiment 9 of the present invention;

10 is a schematic structural diagram of a data transmission apparatus according to Embodiment 10 of the present invention;

11 is a schematic structural diagram of a data transmission apparatus according to Embodiment 11 of the present invention;

FIG. 12 is a schematic structural diagram of a data sending apparatus according to Embodiment 12 of the present invention; FIG.

13 is a schematic structural diagram of a data transmitting apparatus according to Embodiment 13 of the present invention;

14 is a schematic structural diagram of a data transmitting apparatus according to Embodiment 14 of the present invention;

15 is a schematic structural diagram of a data receiving apparatus according to Embodiment 15 of the present invention;

16 is a schematic structural diagram of a data receiving apparatus according to Embodiment 16 of the present invention;

17 is a schematic structural diagram of a data receiving apparatus according to Embodiment 17 of the present invention;

FIG. 18 is a schematic structural diagram of a local area network establishing apparatus according to Embodiment 18 of the present invention; FIG. 19 is a schematic structural diagram of a local area network establishing apparatus according to Embodiment 19 of the present invention; FIG. 20 is a schematic structural diagram of a local area network establishing apparatus according to Embodiment 20 of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic flowchart of a data transmission method according to Embodiment 1 of the present invention. As shown in FIG. 1 , the data transmission method in this embodiment may specifically include the following steps:

Step 101: Allocate a local area network address for the terminal under the same base station.

In this embodiment, the manner in which the local area network address is allocated may be multiple. For example, the eNB searches for the current available address after the UE accesses, and actively sends the available local area network address to the UE. The UE may also send a request message, and the eNB may The available local area network address is sent to the UE; the UE may also send a request message, where the address is pre-designated with an address, and the eNB checks whether the pre-designated address is available, and if yes, returns a success confirmation message to the UE, and The above-mentioned pre-designated address is assigned to the UE.

In this embodiment, the local area network address may include one of an IP address, a subnet mask, a gateway address, and a Media Access Control (MAC) address, or any combination thereof. In addition, the UE can be assigned an address under the same network segment, for example, UE1 is 192.168.1.2, and UE2 is 192.168.1.4. The UE can also be assigned an address under different network segments, for example, UE1 is 192.168.1.2, and UE2 is 192.168.2.2, as long as it is located under the same eNB, the address and its format shown here are only used as an example, and do not mean the address and format that the UE must adopt, nor do they constitute a limitation on the present invention.

Step 102: Receive data sent by the source terminal, where the foregoing data carries a destination local area network address that needs to be reached;

Step 103: Send the received data to the destination terminal corresponding to the destination local area network address according to the destination local area network address.

In this embodiment, when the source UE in the same eNB communicates with the target UE, the eNB allocates a local area network address to the UE, so that the source UE may not need to send the number sent by the EPC to the source UE. According to the forwarding process, the data is directly transmitted to the destination UE through the eNB, thereby saving the routing resources of the EPC and reducing the dependence on the EPC.

2 is a schematic flowchart of a data transmission method according to Embodiment 2 of the present invention. As shown in FIG. 2, the data transmission method in this embodiment may specifically include the following steps:

Step 201: The UE in the Radio Resource Control (RRC) idle state, for example, the source UE and the destination UE, sends a first RRC Connection Request (RRCConnectionRequest) message to the eNB.

In this embodiment, if the UE has entered the RRC connection state, the step may be omitted. Step 202: The eNB receives the first RRC connection request message, and sends a first RRC connection setup (RRCConnectionSetu) message to the UE.

In this embodiment, if the UE has entered the RRC connection state, the step may be omitted. Step 203: The UE receives the first RRC connection setup message, establishes a first RRC connection, and returns a first RRC connection setup completion to the eNB (RRCConnectionSetupComplete The non-access stratum (NAS) length value carried in the first RRC connection setup complete message is 0, so that the eNB can no longer forward the NAS message to the EPC.

So far, the establishment of the RRC connection between the UE and the eNB is completed, and the UE enters the RRC connection state. If the UE in this embodiment is already in the RRC connection state, this step may also be omitted, and step 204 is directly executed;

Step 204: The UE in the RRC connected state sends the first RRC local area network registration to the eNB.

( RRCForLan Register ) message.

In this step, the UE may further carry a pre-designated local area network address in the first RRC LAN registration message. The pre-designated local area network address may include one or any combination of information such as an IP address of the UE, a subnet mask, a gateway address, and a MAC address of the UE. The specific content of the first RRC LAN registration message may include the following fields:

The 6-byte UE's MAC address, that is, 3 bytes is 0, 1 byte is the cell number, and 2 bytes is the Cell Radio Network Temmporary Identify (CRNTI), which can be empty;

The IP address of the 4-byte UE, which can be empty; 4-byte subnet mask, which can be empty;

4-byte gateway address, which can be empty;

The number of the first data radio bearers (DRBs) established by the UEs of the three bits in the local area network, and the first DRB is the data bearer on the Uu interface, and is used for data transmission of user plane data between the eNB and the UE. At this time, if the first DRB has not been established, the three bits may be empty;

Step 205, the eNB receives the first RRC LAN registration message, determines whether the first RRC local area network registration message carries the LAN address pre-designated by the UE, if yes, step 206 is performed; otherwise, step 207 is performed;

Step 206: The eNB checks whether a pre-designated local area network address carried in the first RRC local area network registration message is available, and when available, sends a first RRC local area network registration response (RRCForLanRegisterResponse) message to the UE, where the first RRC local area network registration response message is sent. The success indicator and the pre-designated local area network address of the UE are carried in, and the pre-designated local area network address is allocated to the UE. The specific content of the first RRC LAN registration response message may include the following fields:

1 bit success or failure flag;

The IP address of the 4-byte UE, which can be empty;

4-byte subnet mask, which can be empty;

4-byte gateway address, which can be empty.

Further, in this step, when the eNB confirms that the pre-designated local area network address of the UE carried in the first RRC local area network registration message is unavailable, the RRC sends a first RRC local area network registration response message carrying the failure cause to the UE, where the failure occurs. The reason may be IP occupancy, may also be a subnet mask error, etc., you can perform step 207; or you can re-execute step 204 and step 205;

Step 207: The eNB allocates an available local area network address to the UE, and sends a first RRC local area network registration response message to the UE, where the first RRC local area network registration response message carries the allocated local area network address.

The assigned local area network address may include one or any combination of the assigned UE's IP address, subnet mask, gateway address, and UE's MAC address.

The UE receives the first RRC LAN registration response message, so that the required data can be acquired. The desired LAN address, for example: the IP address of the UE and the MAC address of the UE.

Step 208: The source UE determines whether the first DRB between the source UE and the eNB has been established, and if yes, step 210 is performed; otherwise, step 209 is performed;

Step 209: The eNB interacts with the source UE to establish a first DRB.

There may be multiple ways to establish the first DRB. In this embodiment, the eNB may send the relevant data plane transmission air interface resource parameter to the source UE through the RRC connection configuration (RRCConrwctionReconfiguration) message. After the source UE receives the RRC connection configuration message, Then, the host is configured according to the received parameters. If the configuration is successful, the source UE returns an RRC Connection Configuration Complete (RRCConnectionReconfigurationComplete) message to the eNB, thereby establishing a first DRB.

Step 210: The source UE sends data to the eNB through the first DRB according to the local area network address, where the data carries the destination local area network address that needs to be reached.

In this step, the source local area network address carried by the source UE in the sent data may be obtained by using multiple methods, for example, the source UE may obtain the destination local area network address specified by the upper layer module, and the source UE may also obtain the destination local area network address from the eNB.

Step 211: The eNB receives data, and all destination UEs corresponding to the destination local area network address are matched according to the destination local area network address.

In this embodiment, the destination UEs that can be matched by the destination UE may be one or more, and may be implemented by, but not limited to, the following methods:

The first type: the data includes multiple destination UE addresses. After receiving the data, the eNB sends the data directly to the destination UE corresponding to the multiple destination UE addresses, so that the multicast service can be implemented. Second: In the data The destination gateway address is included, and after receiving the data, the eNB sends the data to all UEs under the destination gateway, so that the multicast service can be implemented.

The third type: the data includes the destination cell number to which the destination UE belongs, and after receiving the data, the eNB sends the data to all the destination UEs corresponding to the target cell corresponding to the target cell, so that the multicast service can be implemented.

The fourth type: the data includes the destination MAC address of the destination UE, that is, the destination CRNTI and the destination cell number. After receiving the data, the eNB sends the data to the destination CRNTI and the destination cell to the destination UE. , so that multicast services can be implemented; Step 212, the eNB determines whether the second DRB between the eNB and the destination UE has been established, and if so, step 214 is performed; otherwise, step 213 and step 214 are performed;

Step 213: The eNB interacts with the matched destination UE to establish a second DRB.

In this embodiment, the eNB establishes the relevant data plane transmission air interface resource parameter to the destination UE by using the RRC connection configuration message, and after receiving the RRC connection configuration message, the destination UE performs the self according to the received parameter. Configuration, if the configuration is successful, the destination UE returns an RRC connection configuration complete message to the eNB;

Step 214: The eNB sends data to the matched destination UE by using the second DRB.

In this embodiment, the eNB may further store the local area network address that has been allocated to the UE into the local area network activation address queue.

In this embodiment, the method further includes: detecting whether the destination UE corresponding to the destination local area network address is reachable, where the source UE is configured to perform an interaction between the source UE and the eNB, and the source UE sends an RRC Local Area Network Ping Request (RRCForLanPingRequest) message to the eNB, and the eNB receives the After the RRC local area network pings the request message, it checks whether the destination local area network address exists. If the destination local area network address exists, the RRC local area network Ping request response (RRCForLanPingRequestEcho) message carrying the destination UE reachable information is returned to the source UE. The specific content of the RRC local area network ping request message may include a destination local area network address field, and the specific content of the RRC local area network ping request response message may include whether the clear flag field is clear. If the destination LAN address does not exist, the RRC LAN ping request response message may further carry the reason description field in addition to the destination UE not being able to reach the information.

In this embodiment, the UE (the source UE or the destination UE) may need to exit the local area network for some reason, for example, the source UE or the destination UE completes the data transmission task, and the corresponding embodiment may further provide the source UE or the destination. The process of the UE exiting the local area network may be implemented by the UE that wants to quit the local area network and the eNB. The UE that wants to quit the local area network sends an RRC LAN hangout request (RRCForLanLogoutRequest) message to the eNB, and after receiving the RRC local area network cancellation request message, the eNB returns to the UE. The RRC LAN Logout Response (RRCForLanLogoutResponse) message, and further delete the corresponding LAN address in the saved LAN activation address queue. The specific content of the RRC LAN logout request message may include the following fields: 1 byte reason for logout;

The 6-byte UE's MAC address (3 bytes is 0, 1 byte is the cell number, 2 bytes are CRNTI); 4 bytes of the UE's IP address.

The specific content of the RRC LAN logout response message may include the following fields:

1 byte logout reason:

The IP address of the 4-byte UE, which can be empty;

4-byte subnet mask, which can be empty;

4-byte gateway address, which can be empty.

The method of the embodiment can enable the eNB to allocate the corresponding local area network address to the source UE and the destination UE by adding a new air interface message, that is, the RRC local area network registration message and the RRC local area network registration response message, so that the source UE can not need the EPC to the source UE. The transmitted data is forwarded and directly transmitted by the eNB to the destination UE, which saves the routing resources of the EPC and reduces the dependence on the EPC.

FIG. 3 is a schematic flowchart of a data transmission method according to Embodiment 3 of the present invention. As shown in FIG. 3, the data transmission method in this embodiment may specifically include the following steps:

Step 301: The UE sends a third RRC connection request message to the eNB, where the access reason carried in the third RRC connection request message is a local area network access (forlan);

Step 302, the eNB receives the third RRC connection request message, determines whether the UE is in the RRC connection state, and if so, proceeds to step 303; otherwise, proceeds to step 304;

Step 303: The eNB allocates an available local area network address to the UE, and sends a third RRC connection setup message to the UE, where the third RRC connection setup message carries the allocated local area network address.

Step 304: The eNB allocates an air interface resource and an available local area network address to the UE, and sends a third RRC connection setup message to the UE, where the third RRC connection setup message carries the allocated local area network address.

The local area network address allocated to the UE in step 303 and step 304 may include one or any combination of information such as an IP address (IP address) of the UE, a subnet mask, a gateway address, and a MAC address (MAC address) of the UE. The third RRC connection setup message may specifically include the following fields:

4-byte UE IP address;

4-byte subnet mask; 4-byte gateway address;

Step 305: The UE receives the third RRC connection setup message, establishes a third RRC connection, and returns a third RRC connection setup complete message to the eNB, where the length of the NAS carried in the third RRC connection setup complete message is 0, so that The eNB is instructed to no longer forward NAS messages to the EPC.

The UE receives the third RRC connection setup message, so that the local area network address required for transmitting data can be obtained, for example, the IP address of the UE and the MAC address of the UE;

Step 306: The source UE determines whether the third data radio bearer DRB between the source UE and the eNB has been established, if yes, step 308 is performed; otherwise, step 307 is performed;

Step 307: The eNB interacts with the source UE to establish a third DRB.

The third DRB in this embodiment is a data bearer on the Uu interface, and is used for transmitting user plane data between the eNB and the source UE. There may be multiple ways to establish the third DRB. In this embodiment, the eNB may send the relevant data plane transmission air interface resource parameter to the source UE through the RRC connection configuration message. After receiving the RRC connection configuration message, the source UE receives the The obtained parameter configures itself, if the configuration is successful, the source UE returns an RRC connection configuration complete message to the eNB, thereby establishing a third DRB;

Step 308: The source UE sends data to the eNB through the third DRB according to the local area network address, where the data carries the destination local area network address that needs to be reached.

Step 309: The eNB receives the data, and all the destination UEs corresponding to the destination local area network address are matched according to the destination local area network address.

The first type: the data includes multiple destination UE addresses. After receiving the data, the eNB sends the data directly to the destination UE corresponding to the multiple destination UE addresses, so that the multicast service can be implemented. Second: In the data The destination gateway address is included, and after receiving the data, the eNB sends the data to all UEs under the destination gateway, so that the multicast service can be implemented. The third type: the data includes the destination cell number to which the target UE belongs, and after receiving the data, the eNB sends the data to all the destination UEs corresponding to the target cell corresponding to the target cell, so that the multicast service can be implemented.

The fourth type: the data includes the destination MAC address of the destination UE, that is, the destination CRNTI and the destination cell number. After receiving the data, the eNB sends the data to the destination CRNTI and the destination cell to the destination UE. , so that multicast services can be implemented;

Step 310: The eNB determines whether the fourth DRB between the eNB and the destination UE has been established. If yes, step 312 is performed; otherwise, step 311 is performed;

Step 311: The eNB interacts with the destination UE to establish a fourth DRB.

The fourth DRB in this embodiment is a data bearer on the Uu interface, and is used for transmitting user plane data between the eNB and the destination UE. The establishment of the fourth DRB in this embodiment may be performed by the eNB transmitting the relevant data plane transmission air interface resource parameter to the destination UE by using an RRC connection configuration message, and after receiving the RRC connection configuration message, the destination UE performs the self according to the received parameter. Configuration, if the configuration is successful, the destination UE returns an RRC connection configuration complete message to the eNB;

Step 312: The eNB sends data to the matched destination UE by using the fourth DRB.

In this embodiment, the method further includes: detecting whether the destination UE corresponding to the destination local area network address is reachable, where the source UE is configured to perform uplink information transmission with the eNB (L/ _/A7 bm7ai) /'OA7 Transfer) message, after receiving the uplink information delivery message, the eNB checks whether the destination local area network address exists, and if the destination local area network address exists, returns the downlink information transmission carrying the destination UE reachable information to the source UE (DLInformationTransfer) ) Message. The specific content of the uplink information delivery message may include a field of the destination local area network address, and the specific content of the downlink information delivery message may include a field of whether the destination UE can reach the information.

In this embodiment, the UE (the source UE or the destination UE) may need to exit the local area network for some reason, for example, the source UE or the destination UE completes the data transmission task, and the corresponding embodiment may further provide the source UE or the destination. The process of the UE exiting the local area network may be implemented by the UE that wants to quit the local area network or the eNB initiates the exit of the local area network request. For the case where the UE actively initiates the exit of the local area network request, the UE that wants to exit the local area network sends an RRC status (RRCStatus) message to the eNB, and after receiving the RRC status message, the eNB sets the local area network address of the UE to be idle. The eNB may further delete the corresponding local area network address in the saved local area network activation address queue. The specific content of the RRC status message may include the following fields:

1 byte exit LAN flag;

4-byte UE IP address;

4-byte subnet mask;

4-byte gateway address.

For the case where the eNB initiates the exit of the local area network request, the eNB sends the UE to the UE to be logged out of the local area network.

The RRC (RRCConnectionRelease) message is released because the LAN is logged out.

The UE receives the RRC connection release message, releases the RRC connection, and sets the UE to the RRC idle state.

The method of the embodiment can enable the eNB to deliver the corresponding local area network address to the source UE by modifying the existing air interface message, that is, the RRC connection request message and the RRC connection setup message, so that the source UE can not need the data sent by the EPC to the source UE. The forwarding process is performed, and the data is directly sent to the destination UE by the eNB, which saves the routing resources of the EPC and reduces the dependence on the EPC.

4 is a schematic flowchart of a data sending method according to Embodiment 4 of the present invention. As shown in FIG. 4, the data sending method in this embodiment may specifically include the following steps:

Step 401: The UE registers with a local area network under the eNB.

Step 402: The UE sends data carrying the destination local area network address to the eNB.

In this embodiment, the UE can obtain the local area network address allocated by the eNB by registering the local area network under the eNB, and the specific allocation of the local area network address may be performed by multiple types, for example, the eNB searches for the currently available address, and actively uses the available local area network address. The UE may send a request message, and the eNB may send the available local area network address to the UE. The UE may also send a request message, where the address is pre-designated with an address, and the eNB checks whether the pre-designated address is Available, if available, return a success confirmation message to the UE and assign the pre-specified address to the UE. The local area network address may include one of: an IP address, a subnet mask, a gateway address, or a MAC address or random combination. Before the UE is registered to the local area network, the method further includes: detecting whether the UE is in an RRC connected state, and if not, establishing an RRC connection with the eNB by sending an RRC connection request message.

In this embodiment, the method for the UE to send data to the eNB may include determining whether the DRB between the UE and the eNB has been established. If yes, the UE sends data to the eNB according to the local area network address through the DRB. The eNB interacts with the UE to establish a DRB. After establishing the DRB, the UE sends data to the eNB through the DRB according to the local area network address.

In this embodiment, when the UE under the eNB sends data, the local area network address can be obtained by registering with the eNB, and the data sent by the UE can be forwarded without the EPC, and the data is sent directly through the local area network under the same eNB. The data is sent to the destination UE through the eNB, thereby saving the routing resources of the EPC and reducing the dependence on the EPC.

FIG. 5 is a schematic flowchart of a data receiving method according to Embodiment 5 of the present invention. As shown in FIG. 5, the data receiving method in this embodiment may specifically include the following steps:

Step 501: The UE registers with a local area network under the eNB.

Step 502: The UE receives data sent by the eNB.

In this embodiment, the UE can obtain the local area network address allocated by the eNB by registering the local area network under the eNB, and the specific allocation of the local area network address may be performed by multiple types, for example, the eNB searches for the currently available address, and actively uses the available local area network address. The UE may send a request message, and the eNB may send the available local area network address to the UE. The UE may also send a request message, where the address is pre-designated with an address, and the eNB checks whether the pre-designated address is Available, if available, return a success confirmation message to the UE and assign the pre-specified address to the UE. The local area network address may include one of an IP address, a subnet mask, a gateway address, a MAC address, or any combination thereof. Before the U E is registered to the local area network, the method further includes: detecting whether the U E is in an RRC connection state, and if not, establishing an RRC connection with the eNB by sending an RRC connection request message. In addition, in order for the UE to know the sender related information of the data, the sender may also carry the sender's local area network address information or identity information.

In this embodiment, the method for the UE to receive the data sent by the eNB may include determining whether the DRB between the UE and the eNB has been established. If yes, the UE sends data to the eNB according to the local area network address through the DRB. The eNB establishes a DRB by interacting with the UE. After establishing the DRB, the UE sends data to the eNB through the DRB according to the local area network address. .

In this embodiment, when the UE under the eNB receives the data, the UE can obtain the allocated local area network address by registering with the eNB, so that the UE can receive the data directly forwarded by the eNB through the local area network under the same eNB, thereby saving the routing resources of the EPC. Reduced reliance on EPC.

FIG. 6 is a schematic flowchart of a method for establishing a local area network according to Embodiment 6 of the present invention. As shown in FIG. 6, the method for establishing a local area network according to this embodiment may specifically include the following steps:

Step 601: The eNB receives an incoming local area network mode request message sent by the UE.

Step 602: The eNB allocates a local area network address to the UE.

In this embodiment, the eNB may allocate a local area network address in multiple manners, for example, the eNB searches for the current available address, and actively sends the available local area network address to the UE. The UE may also send a request message, and the eNB may use the available local area network address. And sending, by the UE, a request message, where the address is pre-specified in the request message, and the eNB checks whether the pre-designated address is available, and if yes, returns a success confirmation message to the UE, and the pre-specified The address is assigned to the UE.

In this embodiment, the local area network address may include one of an IP address, a subnet mask, a gateway address, and a MAC address, or any combination thereof. In addition, the UE can be assigned an address in the same network segment, for example, UE1 is 192.168.1.2, and UE2 is 192.168.1.4. The UE can also be assigned an address under different network segments, for example, UE1 is 192.168.1.2, and UE2 is 192.168.2.2, as long as it is located under the same eNB.

In this embodiment, when the UE under the same eNB performs communication, the eNB can allocate a local area network address to establish a local area network, so that the UE can perform forwarding processing on the data without the EPC, and directly collect data from the source through the eNB. The UE sends the message to the destination UE, which saves the routing resources of the EPC and reduces the dependence on the EPC.

FIG. 7 is a schematic flowchart of a method for establishing a local area network according to Embodiment 7 of the present invention. As shown in FIG. 7, the method for establishing a local area network according to this embodiment may specifically include the following steps:

Step 701: The UE in the RRC idle state sends a fifth RRC connection request to the eNB. If the UE has entered the RRC connection state, the step may be omitted. Step 702: The eNB receives the fifth RRC connection request message. The UE sends a fifth RRC Connection Setup message. In this embodiment, if the UE has entered the RRC connection state, the step may be omitted. Step 703: The UE receives the fifth RRC connection setup message, establishes a fifth RRC connection, and returns a fifth RRC connection setup complete message to the eNB. The length of the NAS carried in the fifth RRC connection setup complete message is 0, so that the eNB can no longer forward the NAS message to the EPC.

So far, the establishment of the RRC connection between the UE and the eNB is completed, and the UE enters the RRC connection state. If the UE in this embodiment is already in the RRC connection state, this step may also be omitted, and step 704 is directly executed;

Step 704: The UE in the RRC connected state sends a third RRC LAN registration message to the eNB.

In this step, the UE may further carry a pre-specified local area network address in the third RRC local area network registration message. The pre-designated local area network address may include one or any combination of information such as an IP address (IP address) of the UE, a subnet mask, a gateway address, and a MAC address (MAC address) of the UE. The specific content of the third RRC LAN registration message may include the following fields:

The 6-byte UE's MAC address, that is, 3 bytes is 0, 1 byte is the cell number, and 2 bytes are

CRNTI, which can be empty;

4-byte IP address, which can be empty;

4-byte subnet mask, which can be empty;

4-byte gateway address, which can be empty;

The third DRB number established by the UE of the 3 bits in the local area network, and the third DRB is the data bearer on the Uu interface, used for transmitting the user plane data between the eNB and the UE. If the third DRB has not been established yet, Then these 3 bits can be empty;

Step 705: The eNB receives the third RRC LAN registration message, and determines whether the third RRC local area network registration message carries the LAN address pre-designated by the UE. If yes, step 706 is performed; otherwise, step 707 is performed;

Step 706: The eNB checks whether a pre-designated local area network address carried in the third RRC local area network registration message is available, and when available, sends a third RRC local area network registration response message to the UE, where the third RRC local area network registration response message carries The success flag and the pre-designated local area network address of the UE allocate the pre-designated local area network address to the UE. Third RRC LAN registration ringing The specific content of the message may include the following fields:

1 bit success or failure flag;

4-byte IP address, which can be empty;

4-byte subnet mask, which can be empty;

4-byte gateway address, which can be empty.

Further, in this step, if the eNB confirms that the pre-designated local area network address of the UE carried in the third RRC local area network registration message is unavailable, the third RRC local area network registration response message carrying the failure cause is sent to the UE, where the failure occurs. The reason may be IP occupation, may also be a subnet mask error, etc., and step 707; or re-execute steps 704 and 705;

Step 707: The eNB allocates an available local area network address to the UE, and sends a third RRC local area network registration response message to the UE, where the third RRC local area network registration response message carries the allocated local area network address.

The assigned local area network address may include one or any combination of the assigned UE's IP address (IP address), subnet mask, gateway address, and UE's MAC address (MAC address).

The UE receives the third RRC LAN registration response message, so that the local area network address required for transmitting data can be obtained, for example, the IP address of the UE and the MAC address of the UE.

The method of the embodiment can enable the eNB to allocate a corresponding local area network address to the UE by adding a new air interface message, that is, the RRC local area network registration message and the RRC local area network registration response message, so that the EPC is not required to source the UE when performing data transmission between the UEs. The transmitted data is forwarded and directly transmitted by the eNB to the destination UE, which saves the routing resources of the EPC and reduces the dependence on the EPC.

FIG. 8 is a schematic flowchart of a method for establishing a local area network according to Embodiment 8 of the present invention. As shown in FIG. 8, the method for establishing a local area network according to this embodiment may specifically include the following steps:

Step 801: The UE sends a sixth RRC connection request message to the eNB, where the access reason carried in the sixth RRC connection request message is a local area network access (forlan);

Step 802, the eNB receives the sixth RRC connection request message, determines whether the UE is in the RRC connection state, and if so, proceeds to step 803; otherwise, proceeds to step 804;

Step 803: The eNB allocates an available local area network address to the UE, and sends a sixth RRC to the UE. a connection establishment message, where the sixth RRC connection setup message carries the allocated local area network address; Step 804: The eNB allocates an air interface resource and an available local area network address to the UE, and sends a sixth RRC connection setup message to the UE, where the sixth RRC connection is established. The setup message carries the assigned LAN address.

The local area network address assigned to the UE in step 803 and step 804 may include one or any combination of information such as an IP address (IP address) of the UE, a subnet mask, a gateway address, and a MAC address (MAC address) of the UE. The specific content of the sixth RRC connection setup message may include the following fields:

4-byte IP address;

4-byte subnet mask;

4-byte gateway address;

Step 805: The UE receives the sixth RRC connection setup message, establishes a sixth RRC connection, and returns a sixth RRC connection setup complete message to the eNB, where the length of the NAS carried in the sixth RRC connection setup complete message is 0, so that Instructing the eNB to no longer forward NAS messages to the EPC;

The UE receives the sixth RRC connection setup message, so that the local area network address required for transmitting data can be obtained, for example, the IP address of the UE and the MAC address of the UE.

The method of the embodiment can modify the existing air interface message, that is, the RRC connection request message and the RRC connection setup message, to enable the eNB to allocate a corresponding local area network address to the UE, so that when the data is transmitted between the UEs, the EPC may not need to be used by the source UE. The transmitted data is forwarded and directly transmitted by the eNB to the destination UE, which saves the routing resources of the EPC and reduces the dependence on the EPC.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in an embodiment can be referred to the related descriptions of other embodiments. FIG. 9 is a schematic structural diagram of a data transmission apparatus according to Embodiment 9 of the present invention. As shown in FIG. 9, the data transmission apparatus of this embodiment may include a first distribution module 91, a first receiving module 92, and a first sending module 93. The first distribution module 91 allocates a local area network address to the terminal under the same base station, and the first receiving module 92 receives the data sent by the source terminal, where the data carries the destination terminal corresponding to the destination local area network.

In this embodiment, the first allocation module may allocate a local area network address to the terminal in multiple manners, for example: the first allocation module searches for the current available address after the UE accesses, and actively sends the available local area network address to the UE; The request message may be sent by the UE, and the first allocation module sends the available local area network address to the UE. The UE may also send a request message, where the address is pre-designated with an address, and the first allocation module checks whether the pre-designated address is Available, if available, returns a success acknowledgment message to the UE and assigns the pre-specified address to the UE.

In this embodiment, the local area network address may include one of an IP address, a subnet mask, a gateway address, and a MAC address, or any combination thereof. In addition, the UE can be assigned an address in the same network segment, for example, UE1 is 192.168.1.2, and UE2 is 192.168.1.4. The UE can also be assigned an address under different network segments, for example, UE1 is 192.168.1.2, and UE2 is 192.168.2.2, as long as it is located under the same eNB, the address and its format shown here are used as an example only, and do not mean the address and format that the UE must adopt, nor do they constitute a limitation on the present invention.

In this embodiment, when the source UE in the same eNB communicates with the target UE, the first allocation module allocates a local area network address to the UE, so that the source UE can forward the data sent by the source UE through the EPC, but directly The data is sent to the destination UE by the first sending module, thereby saving the routing resources of the EPC and reducing the dependence on the EPC.

10 is a schematic structural diagram of a data transmission apparatus according to Embodiment 10 of the present invention. As shown in FIG. 10, the first distribution module 91 in the data transmission apparatus of this embodiment may further include a first The receiving unit 911, the first allocating unit 912, and the first transmitting unit 913. The first receiving unit 911 receives the RRC local area network registration message sent by the source terminal or the destination terminal, and the first allocating unit 912 obtains the local area network address allocated for the terminal according to the RRC local area network registration message, and the first sending unit 913 goes to the source terminal. Or the destination terminal sends an RRC local area network registration response message, where the RRC local area network registration response message carries the local area network address. In this embodiment, the RRC local area network registration message received by the first receiving unit and the specific content included in the RRC local area network registration response message sent by the first sending unit may be respectively referred to the first RRC local area network registration in the second embodiment of the present invention. The specific content of the message, the first RRC LAN registration response message. Before the message, the RRC connection state needs to be entered. For the specific steps, refer to related content in the second embodiment of the present invention.

The apparatus of this embodiment can enable the eNB to allocate the corresponding local area network to the source UE and the destination UE by adding a new air interface message, that is, the RRC local area network registration message received by the first receiving unit and the RRC local area network registration response message sent by the first sending unit. The address enables the source UE to perform the forwarding processing on the data sent by the source UE by the EPC, and directly transmits the data to the destination UE through the eNB, which saves the routing resources of the EPC and reduces the dependence on the EPC.

FIG. 11 is a schematic structural diagram of a data transmission apparatus according to Embodiment 11 of the present invention. As shown in FIG. 11, the first distribution module 91 in the data transmission apparatus of this embodiment may further include The second receiving unit 914, the second allocating unit 915, and the third receiving unit 916. The second receiving unit 914 receives the RRC connection request message sent by the source terminal or the destination terminal, where the access reason carried in the RRC connection request message is a local area network access, and the second allocation unit 915 sends the source terminal or the destination The terminal sends an RRC connection setup message, where the RRC connection setup message carries the local area network address assigned to the source terminal or the destination terminal, and the third receiving unit 916 receives the RRC connection setup complete message returned by the source terminal or the destination terminal. The NAS length value carried in the RRC connection setup complete message is 0.

In this embodiment, the specific content included in the RRC connection setup message sent by the second allocation unit may refer to the specific content of the third RRC connection setup message in the third embodiment of the present invention.

The method of the embodiment can enable the eNB to deliver the corresponding local area network address to the source UE by modifying the existing air interface message, that is, the RRC connection request message received by the second receiving unit and the RRC connection setup message sent by the second allocation unit. The source UE may not need to forward the data sent by the source UE by the EPC, but directly send the data to the destination UE through the eNB, which saves the routing resources of the EPC and reduces the dependence on the EPC.

Further, the data transmission device provided in Embodiment IX, Embodiment 10 and Embodiment 11 of the present invention The setting may further include an address storage module (not shown) for storing the local area network address allocated by the first allocation module for the terminal into the local area network activation address queue. The detection module (not shown) may be further configured to detect whether the destination terminal corresponding to the destination local area network address is reachable according to the local area network activation address queue stored in the address storage module.

The UE (source UE or destination UE) may need to quit the LAN for some reason, for example:

The data transmission apparatus provided in the ninth embodiment, the tenth embodiment, and the eleventh embodiment may further include a deletion module (not shown) for acquiring the data transmission device. The terminal exits the information of the local area network, and deletes the corresponding local area network address in the local area activation address queue. For a specific method for obtaining information about the terminal exiting the local area network, refer to related content in the second embodiment and the third embodiment of the present invention.

The embodiment of the present invention may further provide a base station, including the data transmission apparatus provided in Embodiment 9, the tenth embodiment and the eleventh embodiment of the present invention.

FIG. 12 is a schematic structural diagram of a data sending apparatus according to Embodiment 12 of the present invention. As shown in FIG. 12, the data sending apparatus of this embodiment may include a first registration module 1201 and a second sending module 1202. The first registration module 1201 is configured to register to a local area network under the base station, and the second sending module 1202 is configured to send data carrying the destination local area network address to the base station.

In this embodiment, the first registration module is registered to the local area network under the eNB, and the local area network address allocated by the eNB can be obtained. The specific manner for allocating the local area network address may be various, for example: the eNB searches for the currently available address, and the available The local area network address is sent to the first registration module, and the request signal is sent by the first registration module. The eNB sends the available local area network address to the first registration module. The first registration module can also send the request message. An address is pre-specified, and the first registration module checks whether the pre-designated address is available. If available, returns a success confirmation message to the first registration module, and assigns the pre-designated address to the first registration module. The local area network address may include one of: an IP address, a subnet mask, a gateway address, a MAC address, or any combination thereof. The first registration module may be further configured to detect whether the UE is in an RRC connection state before being registered to the local area network. If not, the RRC connection may be established with the eNB by sending an RRC connection request message.

In this embodiment, when the second sending module sends data, the first registration module may register with the eNB to obtain the allocated local area network address, thereby implementing that the second sending module may not be required by the EPC. The sent data is forwarded, and the data to be sent is sent to the target UE through the eNB directly through the local area network of the same eNB, thereby saving the routing resources of the EPC and reducing the dependence on the EPC.

13 is a schematic structural diagram of a data transmitting apparatus according to Embodiment 13 of the present invention. As shown in FIG. 13, the first registration module 1201 in the data transmitting apparatus of this embodiment may further include The second transmitting unit 12011 and the fourth receiving unit 12012. The second sending unit 12011 sends an RRC local area network registration message to the base station, and the fourth receiving unit 12012 receives the RRC local area network registration response message returned by the base station, where the RRC local area network registration response message carries the allocated local area network address.

The device of this embodiment adds a new air interface message, that is, the second sending unit sends

The RRC local area network registration message and the RRC local area network registration response message received by the fourth receiving unit enable the eNB to allocate the corresponding local area network address to the source UE and the destination UE, so that the source UE can perform forwarding processing on the data sent by the source UE without using the EPC. The data is directly sent to the destination UE through the eNB, which saves the routing resources of the EPC and reduces the dependence on the EPC.

14 is a schematic structural diagram of a data transmitting apparatus according to Embodiment 14 of the present invention. As shown in FIG. 14, the first registration module 1201 in the data transmitting apparatus of this embodiment may further include The third transmitting unit 12013, the fifth receiving unit 12014, and the fourth transmitting unit 12015. The third sending unit 12013 sends an RRC connection request message to the base station, where the access reason carried in the RRC connection request message is a local area network access, and the fifth receiving unit 12014 receives the RRC connection setup message returned by the base station. The RRC connection setup message carries the allocated local area network address, and the fourth sending unit 12015 sends an RRC connection setup complete message to the base station, where the length of the NAS carried in the RRC connection setup complete message is 0.

The method of the embodiment can enable the eNB to deliver the corresponding local area network address to the source UE by modifying the existing air interface message, that is, the RRC connection request message sent by the third sending unit and the RRC connection setup message received by the fifth receiving unit. The source UE may not need to forward the data sent by the source UE by the EPC, but directly send the data to the destination UE through the eNB, which saves the routing resources of the EPC and reduces the dependence on the EPC.

The embodiment of the present invention may further provide a terminal, including the data sending apparatus provided in Embodiment 12, Embodiment 13 or Embodiment 14 of the present invention. FIG. 15 is a schematic structural diagram of a data receiving apparatus according to Embodiment 15 of the present invention. As shown in FIG. 15, the data receiving apparatus of this embodiment may include a second registration module 1501 and a second receiving module 1502. The second registration module 1501 is configured to register to a local area network under the base station, and the second receiving module 1502 is configured to receive data sent by the base station.

In this embodiment, the second registration module is registered to the local area network under the eNB, and the local area network address allocated by the eNB can be obtained. The manner of specifically assigning the local area network address may be various, for example: the eNB searches for the currently available address, and the available The local area network address is actively sent to the second registration module. The request message may be sent by the second registration module, and the eNB sends the available local area network address to the second registration module. The request message may also be sent by the second registration module. An address is pre-specified, and the second registration module checks whether the pre-designated address is available. If available, returns a success confirmation message to the second registration module, and assigns the pre-designated address to the second registration module. The local area network address may include one of: an IP address, a subnet mask, a gateway address, a MAC address, or any combination thereof. The second registration module may be further configured to detect whether the UE is in an RRC connection state before being registered to the local area network. If not, the RRC connection may be established with the eNB by sending an RRC connection request message.

In this embodiment, the data received by the second receiving module may be registered with the eNB to obtain the allocated local area network address by using the second registration module, so that the data sent by the source UE may not be required to be forwarded by the EPC, but directly through the same The local area network under the eNB sends the to-be-transmitted data to the second receiving module through the eNB, thereby saving routing resources of the EPC and reducing the dependence on the EPC.

FIG. 16 is a schematic structural diagram of a data receiving apparatus according to Embodiment 16 of the present invention. As shown in FIG. 16, the second registration module 1501 in the data receiving apparatus of this embodiment may further include a fifth sending unit 15011 and a sixth. Receiving unit 15012. The fifth sending unit 15011 sends an RRC local area network registration message to the base station, and the sixth receiving unit 15012 receives the RRC local area network registration response message returned by the base station, where the RRC local area network registration response message carries the allocated local area network address.

The device in this embodiment can enable the eNB to allocate the corresponding local area network to the source UE and the destination UE by adding a new air interface message, that is, the RRC local area network registration message sent by the fifth sending unit and the RRC local area network registration response message received by the sixth receiving unit. The address is implemented, and the source UE may not need to perform forwarding processing on the data sent by the source UE by using the EPC, but directly through the eNB. According to the transmission to the destination UE, the EPC routing resources are saved, and the dependence on the EPC is reduced.

FIG. 17 is a schematic structural diagram of a data receiving apparatus according to Embodiment 17 of the present invention. As shown in FIG. 17, the second registration module 1501 in the data receiving apparatus of this embodiment may further include The sixth transmitting unit 15013, the seventh receiving unit 15014, and the seventh transmitting unit 15015. The sixth sending unit 15013 sends an RRC connection request message to the base station, where the access reason carried in the RRC connection request message is a local area network access, and the seventh receiving unit 15014 receives the RRC connection setup message returned by the base station. The RRC connection setup message carries the allocated local area network address, and the seventh sending unit 15015 sends an RRC connection setup complete message to the base station, where the length of the NAS carried in the RRC connection setup complete message is 0.

The method in this embodiment is modified by modifying the existing air interface message, that is, the sixth sending unit.

The RRC connection request message and the RRC connection setup message received by the seventh receiving unit enable the eNB to deliver the corresponding local area network address to the source UE, so that the source UE can perform forwarding processing on the data sent by the source UE without using the EPC. The eNB transmits the data to the destination UE, which saves the routing resources of the EPC and reduces the dependence on the EPC.

The embodiment of the present invention may further provide a terminal, which includes the data transmitting apparatus provided in the above-mentioned Embodiment 15 of the present invention, Embodiment 16 and Embodiment 17.

FIG. 18 is a schematic structural diagram of a local area network establishing apparatus according to Embodiment 18 of the present invention. As shown in FIG. 18, the local area network establishing apparatus of this embodiment may include a third receiving module 1801 and a second distributing module 1802. The third receiving module 1801 is configured to receive an incoming local area network mode request message sent by the terminal, and the second assigning module 1802 allocates a local area network address to the terminal.

In this embodiment, the second allocation module may allocate a local area network address to the terminal in a plurality of manners, for example: the second allocation module searches for the current available address after the UE accesses, and actively sends the available local area network address to the UE; The request message sent by the UE may be received by the third receiving module, and the second allocation module sends the available local area network address to the UE. The third receiving module may also receive the request message sent by the UE, where the request message is pre-designated. An address, the second allocation module checks whether the pre-designated address is available, and if so, returns a success confirmation message to the UE, and assigns the pre-designated address to the UE.

In this embodiment, the local area network address may include one of an IP address, a subnet mask, a gateway address, and a MAC address, or any combination thereof. In addition, the UE can be assigned an address under the same network segment. For example, UE1 is 192.168.1.2, and UE2 is 192.168.1.4. The UE can also be assigned an address under different network segments, for example, UE1 is 192.168.1.2, and UE2 is 192.168.2.2, as long as it is located under the same eNB. The addresses shown herein and their formats are used by way of example only and are not meant to imply that the addresses and formats that the UE must employ, nor do they constitute a limitation of the invention.

In this embodiment, when the source UE of the same eNB communicates with the target UE, the second allocation module allocates a local area network address to the UE, so that the source UE can forward the data sent by the source UE without using the EPC. The data is transmitted to the destination UE by the eNB, thereby saving the routing resources of the EPC and reducing the dependence on the EPC.

FIG. 19 is a schematic structural diagram of a local area network establishing apparatus according to Embodiment 19 of the present invention. As shown in FIG. 19, the third receiving module 1801 in the local area network establishing apparatus of the present embodiment is specifically configured to receive The RRC LAN registration message sent by the terminal, the second allocation module 1802 may further include a third allocating unit 18021 and an eighth sending unit 18022. The third allocating unit 18021 obtains a local area network address allocated to the terminal according to the RRC local area network registration message, and the eighth sending unit 18022 sends an RRC local area network registration response message to the terminal, where the RRC local area network registration response message carries The local area network address.

In this embodiment, the specific content included in the RRC local area network registration message and the RRC local area network registration response message sent by the eighth sending unit may be referred to the third RRC local area network registration in the seventh embodiment of the present invention. The specific content of the message, the third RRC LAN registration response message. Before the message, the RRC connection state needs to be entered. For the specific steps, refer to the related content in the second embodiment of the present invention.

FIG. 20 is a schematic structural diagram of a local area network establishing apparatus according to Embodiment 20 of the present invention. As shown in FIG. 20, compared with Embodiment 18, the third receiving module in the local area network establishing apparatus of this embodiment is shown in FIG. The 1801 is specifically configured to receive an RRC connection request message sent by the terminal, where the access reason carried in the RRC connection request message is a local area network access, and the second allocation module 1802 may further include a fourth allocating unit 18823 and an eighth receiving unit. 18024. The fourth allocating unit 18023 sends an RRC connection setup message to the terminal, where the RRC connection setup message carries the local area network address allocated for the terminal, and the eighth receiving unit 18024 receives the RRC connection setup completed by the terminal. The length of the NAS carried in the RRC connection setup complete message is 0.

In this embodiment, the specific content included in the RRC connection setup message sent by the fourth allocation unit may refer to the specific content of the sixth RRC connection setup message in the eighth embodiment of the present invention.

The method of this embodiment is modified by modifying the existing air interface message, that is, the third receiving module.

The RRC connection request message and the RRC connection setup message sent by the fourth allocation unit enable the eNB to deliver the corresponding local area network address to the source UE, so that the source UE can perform forwarding processing on the data sent by the source UE without using the EPC. The eNB transmits the data to the destination UE, which saves the routing resources of the EPC and reduces the dependence on the EPC.

The embodiment of the present invention may further provide a base station, which includes the foregoing local area network establishing apparatus provided in Embodiment 18, Embodiment 19 and Embodiment 20 of the present invention.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A data transmission method, comprising:

Receiving data sent by the source terminal, where the data carries a destination local area network address; a destination terminal.

The method according to claim 1, wherein the local area network address comprises one or any combination of the following addresses: an IP address, a subnet mask, a gateway address, and a media access control address.

The method according to claim 1 or 2, wherein the allocating a local area network address for the terminal under the same base station comprises:

And receiving an RRC LAN registration message sent by the source terminal or the destination terminal, where the RRC LAN registration message carries a LAN address to be allocated that is pre-designated by the UE;

Checking whether the local area network address is available in the RRC LAN registration message;

If available, the RRC LAN registration response message is sent to the source terminal or the destination terminal, and the local area network address is assigned to the source terminal or the destination terminal.

The method according to claim 3, wherein the receiving the RRC LAN registration message sent by the terminal further comprises:

Receiving an RRC connection request message sent by the source terminal or the destination terminal;

Sending an RRC connection setup message to the source terminal or the destination terminal;

Receiving an RRC connection setup complete message returned by the source terminal or the destination terminal, where the length of the NAS carried in the RRC connection setup complete message is 0.

And receiving an RRC connection request message sent by the source terminal or the destination terminal, where the access reason carried in the RRC connection request message is a local area network access;

Allocating a local area network address to the source terminal or the destination terminal;

Sending an RRC connection setup message to the source terminal or the destination terminal, where the RRC connection setup message carries the allocated local area network address; The RRC connection setup complete message returned by the source terminal or the destination terminal is received, and the length of the NAS carried in the RRC connection setup complete message is 0.

The method according to claim 1 or 2, the method further comprising: storing the allocated local area network address in a local area network activation address queue.

7. The method according to claim 6, wherein the method further comprises: according to the method.

The method according to claim 7, wherein the receiving, by the local area network, the RRC local area network ping request message sent by the source terminal, the RRC local area network ping request message carries a destination local area network address;

Returning, in the local area network activation address queue, the RRC local area network Ping request response message to the source terminal, where the RRC local area network Ping request response message carries the destination terminal corresponding to the destination local area network address Can reach the information.

The method according to claim 7, wherein the receiving, according to the local area network, an uplink information delivery message sent by the source terminal, where the uplink information transmission message carries a destination local area network address ;

Returning, to the source terminal, a downlink information delivery message, where the downlink information transmission message carries the destination terminal corresponding to the destination local area network address, when the destination local area network address exists in the local area network activation address queue Can reach the information.

The method according to claim 6, wherein the method further comprises: receiving an RRC local area network cancellation request message sent by the source terminal or the destination terminal; returning an RRC local area network cancellation response to the source terminal or the destination terminal. And deleting the corresponding local area network address in the local area network activation address queue.

The method according to claim 6, wherein the method further comprises: receiving an RRC state message that is sent by the source terminal or the destination terminal and carries an exiting local area network identifier;

Deleting a corresponding local area network address in the local area network activation address queue; or to the source terminal Or the destination terminal sends an RRC connection release message, and deletes a corresponding local area network address in the local area network activation address queue.

12. A data receiving method, comprising:

Registered to the local area network under the base station;

Receiving data transmitted by the base station.

The method according to claim 12, wherein the registering the local area network under the base station specifically includes:

Sending an RRC LAN registration message to the base station;

Receiving an RRC local area network registration response message returned by the base station, where the RRC local area network registration response message carries an allocated local area network address.

The method according to claim 12, wherein the local area network registered under the base station comprises:

Sending an RRC connection request message to the base station, where the access reason carried in the RRC connection request message is a local area network access;

Receiving an RRC connection setup message returned by the base station, where the RRC connection setup message carries an allocated local area network address;

And sending an RRC connection setup complete message to the base station, where the length of the NAS carried in the RRC connection setup complete message is 0.

18. A method for establishing a local area network, the method comprising:

Receiving a local area network mode request message sent by the terminal;

A local area network address is assigned to the terminal.

19. The method of claim 18, wherein the local area network address comprises one or any combination of the following: an IP address, a subnet mask, a gateway address, and a media access control address.

20. A method according to claim 18 or 19, characterized in that

The incoming local area network mode request message sent by the receiving terminal includes: receiving an RRC local area network registration message sent by the terminal;

The allocating a local area network address for the terminal includes: Obtaining, according to the RRC local area network registration message, a local area network address allocated to the terminal; sending an RRC local area network registration response message to the terminal, where the RRC local area network registration response message carries the local area network address.

The method according to claim 18 or 19, wherein the receiving the local area network mode request message sent by the receiving terminal comprises: receiving an RRC connection request message sent by the terminal, and carrying in the RRC connection request message The reason for entering is LAN access;

The allocating a local area network address for the terminal includes:

Sending an RRC connection setup message to the terminal, where the RRC connection setup message carries a local area network address allocated for the terminal;

And receiving an RRC connection setup complete message returned by the terminal, where the length of the N AS carried in the RRC connection setup complete message is 0.

22. A data transmission device, comprising:

The first receiving module is configured to receive data sent by the source terminal, where the data carries a destination local area network address; a destination terminal corresponding to the local area network address.

The device according to claim 22, wherein the first distribution module comprises:

a first receiving unit, configured to receive, by the source terminal or the destination terminal, an RRC local area network registration cancellation first allocation unit, configured to acquire, according to the RRC local area network registration message, a local area network address allocated to the source terminal or the destination terminal;

And a first sending unit, configured to send an RRC local area network registration response message to the source terminal or the destination terminal, where the RRC local area network registration response message carries the local area network address.

a second receiving unit, configured to receive an RRC connection request message sent by the source terminal or the destination terminal, where the access reason carried in the RRC connection request message is a local area network access; a second allocation unit, configured to send an RRC connection setup message to the source terminal or the destination terminal, where the RRC connection setup message carries a local area network address allocated to the source terminal or the destination terminal;

And a third receiving unit, configured to receive an RRC connection setup complete message returned by the source terminal or the destination terminal, where the length of the NAS carried in the RRC connection setup complete message is 0.

The device according to claim 22, 23 or 24, further comprising: an address storage module, configured to store the allocated local area network address in a local area network activation address queue.

26. The apparatus of claim 25, further comprising: a detection module that is reachable.

The device according to claim 25, further comprising: a deleting module, configured to acquire information about the terminal exiting the local area network, and delete a corresponding local area network address in the local area network activation address queue.

A base station, comprising the data transmission device according to any one of claims 22 to 27.

29. A data transmitting apparatus, comprising:

The second sending module is configured to send data carrying the destination local area network address to the base station.

30. The device according to claim 29, wherein the first registration module comprises:

a second sending unit, configured to send an RRC local area network registration message to the base station;

And a fourth receiving unit, configured to receive an RRC local area network registration response message returned by the base station, where the RRC local area network registration response message carries an allocated local area network address.

The device according to claim 29, wherein the first registration module comprises:

a third sending unit, configured to send an RRC connection request message to the base station, where the access reason carried in the RRC connection request message is a local area network access;

a fifth receiving unit, configured to receive an RRC connection setup message returned by the base station, where the RRC connection setup message carries an allocated local area network address; The fourth sending unit is configured to send an RRC connection setup complete message to the base station, where the length of the NAS carried in the RRC connection setup complete message is 0.

A terminal, comprising the data transmitting apparatus according to any one of claims 29 to 31.