WO2014127699A1

WO2014127699A1 - Method, equipment and system for establishing direct communication path

Info

Publication number: WO2014127699A1
Application number: PCT/CN2014/071665
Authority: WO
Inventors: 张娟
Original assignee: 电信科学技术研究院
Priority date: 2013-02-25
Filing date: 2014-01-28
Publication date: 2014-08-28
Also published as: CN104010381B; CN104010381A

Abstract

Disclosed are a method, equipment and system for establishing a direct communication path. The method comprises: when a base station where a calling user resides receives a request message to establish direct communication between the calling user and a called user, the base station allocates a direct communication user plane path identifier to the calling user and the called user, and allocates air interface resource configuration information to a direct communication path between the calling user and the called user; the base station where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the calling user and the called user respectively, and instructs the calling user and the called user to perform bearer configuration. Through embodiments of the present invention, a direct communication path can be established between two adjacent UEs, so that the user plane data transmission between the adjacent UEs does not need the participation of a core network, and communication delay and occupation of network resources are reduced.

Description

The present invention claims to be submitted to the Chinese Patent Office on February 25, 2013, the application number is 201310058659.8, and the invention name is "a method, device and system for establishing a direct communication path, Priority of the Chinese Patent Application, the entire contents of which is incorporated herein by reference.

The present invention relates to the field of communications technologies, and in particular, to a method, device and system for establishing a direct communication path. Background technique

The communication process between two User Equipments (UEs) defined in the 3rd Generation Partnership Project (3GPP) is: UE1 sends data to the serving eNB (evolved NodeB, evolved Node B, That is, the base station), the eNB transmits the data to the serving core network device Serving GW (Serving Gate Way) and the PGW (Packet Gateway, the packet gateway), and the PGW routes the data to the service PGW and Serving of the UE2 according to the routing table of the UE1. The GW, the Serving GW served by the UE2, passes the data to the eNB served by the UE2, and then passes it to the UE2 through the eNB. In the scenario shown in Figure 1, UE1 and UE2 serve the same Serving GW and PGW. In this scenario, the PGW that UE1 does not need to route data to the PGW serving UE2.

Even if the location between the two UEs in communication is very close, the communication data needs to pass through the eNBs of the respective services, and the core network can reach the opposite end, the communication delay is large, and the network resources are occupied. Therefore, 3GPP is studying communication technology between neighboring devices, that is, if the two parties are close to each other, direct communication between the two UEs can be realized.

Currently, there is no solution for how to establish a direct communication path for two UEs. Summary of the invention

It is an object of the present invention to provide a method, apparatus and system for establishing a direct communication path to establish a direct communication path between two adjacent UEs.

The object of the invention is achieved by the following technical solutions:

A method of establishing a direct communication path, including:

After receiving the request message for establishing direct communication between the calling user and the called user, the base station where the calling user resides allocates a direct communication user plane path identifier for the calling user and the called user, and Allocating air interface resource configuration information to a direct communication path between the calling user and the called user; the base station where the calling user resides sends the allocated direct communication user plane path to the calling user and the called user respectively And identifying the air interface resource configuration information, and instructing the calling user and the called user to perform bearer configuration.

A base station comprising:

a direct communication request message receiving module, configured to receive a request message for establishing direct communication between the calling user and the called user, where the calling user resides at the base station;

a resource allocation module, configured to allocate a direct communication user plane path identifier to the calling user and the called user, and allocate air interface resource configuration information to a direct communication path between the calling user and the called user;

a bearer configuration indication module, configured to send the allocated direct communication user plane path identifier and air interface resource configuration information to the calling user and the called user, respectively, and instruct the calling user and the called user to perform bearer Configuration.

A system for establishing a direct communication path, comprising:

The calling subscriber, the called subscriber, and the base station where the calling subscriber resides;

The base station where the calling user resides is configured to: after receiving the request message for establishing direct communication between the calling user and the called user, assigning a direct communication user to the calling user and the called user. The surface path identifier, and allocates air interface resource configuration information to the direct communication path between the calling user and the called user; respectively, sending the allocated direct communication user to the calling user and the called user respectively The path identifier and the air interface resource configuration information, and instruct the calling user and the called user to perform bearer configuration;

The calling user and the called user are respectively used to save the received direct communication user plane path identifier and the air interface resource configuration information according to the indication of the base station where the calling user is camped, and according to the direct communication The user plane path identifies the associated air interface resource configuration information for data transmission.

A base station includes: a transceiver, a processor, and a memory;

The transceiver is configured to receive a request message for establishing direct communication between a calling user and a called user, where the calling user resides in the base station;

The memory is configured to store one or more executable programs used to configure the processor; the processor is configured with one or more executable programs, and the one or more executable programs are configured And performing the following method: allocating a direct communication user plane path identifier to the calling user and the called user, and allocating air interface resource configuration information to a direct communication path between the calling user and the called user; Transmitting, by the transceiver, the allocated direct communication user plane path identifier and the air interface resource configuration information to the calling user and the called user, respectively, and instructing the calling user and the called user to receive according to the respective The direct communication user plane path identifier and the air interface resource configuration information are configured for bearer configuration. With the embodiment of the present invention, a path for establishing direct communication between two adjacent UEs is implemented, so that user plane data transmission between adjacent UEs does not require the participation of the core network, which reduces communication delay and occupation of network resources. DRAWINGS

1 is a schematic diagram of a network scenario of communication between adjacent UEs in the prior art;

2 is a flowchart of a method according to an embodiment of the present invention;

FIG. 3 is a signaling diagram of a first method according to an embodiment of the present disclosure;

4 is a signaling diagram of a second method according to an embodiment of the present invention;

FIG. 5 is a signaling diagram of a third method according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a system according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a base station according to another embodiment of the present invention. detailed description

The present invention provides a solution for establishing a direct communication path between two adjacent UEs. After the eNB that the calling user camps receives the request message for establishing direct communication between the calling user and the called user, the calling user and the called user are assigned a direct communication user plane path identifier, and the calling user is the calling user. The direct communication path between the called user and the called user allocates air interface resource configuration information; and then sends the allocated direct communication user plane path identifier and air interface resource configuration information to the calling user and the called user respectively, and indicates the calling user and the called user. The bearer configuration is performed according to the received direct communication user plane path identifier and the air interface resource configuration information. With the embodiment of the present invention, a path for establishing direct communication between two adjacent UEs can be implemented, so that user plane data transmission between adjacent UEs does not require the participation of the core network, which reduces communication delay and occupation of network resources.

The direct communication user plane path identifiers assigned to the calling user and the called user may be the same or different. Preferably, the calling user and the called user are assigned the same direct communication user plane identifier. In the embodiment of the present invention, the direct communication user plane path identifier may be a bearer identifier (ID, ID), or may be a defined through path ID for identifying proximity communication, and the like.

The air interface resource allocation information allocated to the direct communication path between the calling user and the called user includes physical layer transmission resource configuration, which may include, but is not limited to, time-frequency resource information used for data transmission, and transport block size information. , modulation coding method information, etc. The air interface resource configuration information may further include configuration information of a Media Access Control (MAC) layer, Packet Data Convergence Protocol (PDCP) layer configuration information, and the like.

In the embodiment of the present invention, the air interface resource allocation information may include two parts, one part is air interface resource allocation information for sending data allocation by the calling user, and the other part is air interface resource allocation information for sending data allocation of the called user. The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The method for establishing a direct communication path provided by the embodiment of the present invention is described first from the eNB side where the calling user resides. The method is as shown in FIG. 2, and specifically includes the following operations:

Step 100: After receiving the request message for establishing direct communication between the calling user and the called user, the eNB hosted by the calling user allocates a direct communication user plane path identifier to the calling user and the called user, and is called the calling party. The direct communication path between the user and the called user allocates air interface resource configuration information.

The request message for establishing direct communication between the calling user and the called user may be, but not limited to, sent by the Mobility Management Entity (MME) of the calling user, or may be other services of the calling user. The node sends it after determining that it needs to establish direct communication between the calling user and the called user.

Step 110: The eNB where the calling user resides sends the allocated direct communication user plane path identifier and the air interface resource configuration information to the calling user and the called user, and instructs the calling user and the called user to perform bearer configuration.

Preferably, the request message carries location information of the called user and temporary identification information of the called user.

In the embodiment of the present invention, the location information of the called user may be, but is not limited to, any one of the following information or any combination: the Cell ID of the current camping cell, the eNB ID of the currently camped eNB, and the latitude and longitude information. The temporary identification information of the called user may be, but is not limited to, any of the following information or a combination thereof: Global Unique Temporary Identity (GUTI) information of the called user, Cell-Radio Network Temporary Identify , C-RNTI ) information.

The eNB where the calling user camps can also feed back the direct communication path establishment response to the sender of the request message to indicate whether the direct communication path between the calling user and the called user is successfully established. Preferably, after receiving the bearer configuration response message fed back by the calling user and the called user, the eNB hosted by the calling user feeds back a direct communication path setup response message to the sending end of the request message. If the received bearer configuration response message indicates that both the calling user and the called user complete the bearer configuration, the direct communication path establishment response message indicates that the direct communication path is successfully established, otherwise, The letter path setup response message indicates that the direct communication path establishment failed.

Of course, in addition to determining whether the user plane bearer configuration is successful through the received bearer configuration response message, it can also be implemented in other manners. For example, if the response message of the UE is not received within a predetermined time, the UE is considered to have completed (or not completed) the user plane bearer configuration.

On the basis of any of the above embodiments, preferably, the eNB where the calling user camps sends the allocated direct communication user plane path identifier and the air interface resource configuration information to the calling user, and indicates that the calling user performs the bearer configuration. The method may be: performing a radio resource control (RRC) process of the bearer configuration to the calling user, and carrying the direct communication user plane path identifier and the air interface resource configuration information allocated for the calling user in the RRC message. The specific implementation manner of initiating the RRC process to the calling user can refer to the existing RRC process, and details are not described herein again.

In any of the foregoing embodiments, the eNB that the calling user camps to send the allocated direct communication user plane path identifier and the air interface resource configuration information to the called user, and the specific implementation manner of the called user performing the bearer configuration may be applied according to the application. Different scenarios have different implementations. details as follows:

(1) The calling user and the called user reside in the same eNB.

In this case, the eNB in which the calling user resides can determine the RRC procedure of the bearer configuration to the called user according to the location information of the called user carried in the request message. The RRC message carries the direct communication user plane path identifier and the air interface resource configuration information allocated to the called user. The specific implementation manner of initiating the RRC process to the calling user can refer to the existing RRC process, and details are not described herein again.

After determining that the called user is camped on the local eNB, the eNB that the calling user resides also obtains the context information of the called user according to the temporary identification information of the called user carried in the request message.

Further, the direct communication user plane path identifier and the air interface resource configuration information allocated to the called user are also saved as the context information of the called user.

(2) The calling user and the called user camp on different eNBs, and the two eNBs can use the X2 interface to transmit UE-based signaling messages.

In this case, the eNB where the calling user resides can determine the eNB where the called user resides according to the location information of the called user carried in the request message; The X2 interface sends the direct communication user plane path identifier and the air interface resource configuration information allocated to the called user to the eNB where the called user camps, and sends an indication bearer to the called user by using the eNB where the called user camps. The RRC message is configured to carry the direct communication user plane path identifier and the air interface resource configuration information allocated to the called user.

After determining the eNB where the called user is camped, the eNB that the calling user camps on also sends the temporary identification information of the called user carried in the request message to the eNB where the called user resides through the X2 interface. Specifically, the temporary identification information of the called user, the direct communication user plane path identifier allocated to the called user, and the air interface resource configuration information may be sent in the same message, or the temporary identification information of the called user may be separately sent.

The scenario of implementation (2) occurs mostly in the scenario where the calling user and the called user reside in the adjacent base station under the same mobility management entity pool (MME pool). At this time, the calling user and the called user can be registered in the same MME, and can also be registered in different MMEs, which has no impact on the present invention.

(3) The calling user and the called user are camped on different eNBs, but there is no X2 interface between the two eNBs, or the UE-based signaling message cannot be transmitted using the X2 interface.

In this case, the eNB where the calling user resides can determine the eNB where the called user resides according to the location information of the called user carried in the request message; the MME of the calling user, the called user The MME, the eNB that the called user camps on, sends an RRC message indicating the bearer configuration to the called user, where the RRC message carries the direct communication user plane path identifier and the air interface resource configuration information allocated for the called user.

The scenario of implementation mode (3) occurs mostly when two UEs are at the boundary of two MME pools. At this time, the eNB between different MME pools does not deploy the X2 interface. Even if there is an X2 interface between two neighboring eNBs of different MME pools, it cannot be used to deliver UE-based signaling.

It should be noted that the (3) implementation is not only applicable to the absence of an X2 interface between two eNBs or the delivery of UE-based signaling messages using the X2 interface. It also applies to scenarios where there are X2 interfaces between two eNBs.

The method provided by the embodiment of the present invention is described in detail below by taking a specific application scenario as an example. UE1 initiates a session process to UE2, that is, UE1 is the calling user, and UE2 is the called user. The application layer sends the application layer information of the UE1 and the UE2 to a certain server or a service function module. The server or the service function module stores the mapping relationship between the application layer identifier of the UE and the identifier of the UE in the network. The identifier of the UE in the network may be the International Mobile Subscriber Identification Number (IMSI) information of the UE, the International Mobile Equipem nt Identity (IMEI) information, and the mobile subscriber number (Mobile Subscriber International ISDN, MSISDN). ), or other identification information newly defined for the UE in the network.

This server or service function module obtains the location information of the UE2 in the network and the temporary identification information assigned to the UE2 by the 3rd Generation Partnership Project (3GPP) network. The temporary identification information allocated by the 3GPP network to the UE refers to the UE's GUTI information, C-RNTI information, or a combination of the two information.

The server or service function module sends the obtained location information of the UE2 and the temporary identification information allocated by the 3GPP network to the UE2 to the MME currently served by the UE1, which is referred to as MME1. If the condition of the proximity communication is satisfied, the MME1 transmits a request message for establishing direct communication between UE1 and UE2 to the eNB (eNB1) where the UE1 camps. The specific direct communication path establishment process includes the following operations:

Step 200: The MME1 sends a request message for establishing direct communication to the eNB1, where the request message carries the identifier information of the UE1, the temporary identifier information of the UE2, and the location information of the UE2.

Step 210: The eNB 1 allocates air interface resource configuration information for the direct transmission path between the two UEs, and allocates a direct communication user plane path identifier for the UE1 and the UE2.

Step 220: The eNB1 sends a bearer reconfiguration message to the UE1, where the bearer reconfiguration message is used to indicate that the UE1 performs bearer configuration.

The bearer reconfiguration message sent to the UE1 includes the air interface resource configuration information and the direct communication user plane path identifier allocated to the UE1.

Specifically, the RRC procedure of the bearer configuration may be initiated. Correspondingly, the bearer reconfiguration message is an RRC message indicating the bearer configuration. Step 230: The UE1 associates the received direct communication user plane path identifier and the air interface resource configuration information, and returns a bearer configuration response message to the eNB1.

The UE1 can perform direct communication on the air interface resource indicated by the air interface resource configuration information associated with the corresponding direct communication user plane path identifier. Specifically, when performing data transmission, the modulation and coding mode is selected according to the air interface resource configuration information associated with the direct communication user plane path identifier, the transmission block size is set, and the data is received/transmitted on the specified time-frequency resource.

Step 240: The eNB1 determines, according to the location information of the UE2, the eNB that the UE2 camps on. If the UE2 camps on the eNB1, step 250 is performed. If the UE2 camps on another eNB (eNB2), step 280 is performed.

Step 502: The eNB1 sends a bearer reconfiguration message to the UE2, where the bearer reconfiguration message is used to indicate that the UE2 performs bearer configuration, and step 260 is performed.

The bearer reconfiguration message sent to the UE2 includes the air interface resource configuration information and the direct communication user plane path identifier allocated to the UE2.

Specifically, the RRC procedure of the bearer configuration may be initiated. Correspondingly, the bearer reconfiguration message is an RRC message indicating the bearer configuration.

Step 260: The eNB1 acquires the context information of the UE2 according to the temporary identifier information of the UE2, and performs step 270.

Further, the direct communication user plane path identifier and the air interface resource configuration information allocated for the UE2 are saved as the context information of the UE2.

Step 270: The UE2 associates the received direct communication user plane path identifier with the air interface resource configuration information, and returns a bearer configuration response message to the eNB1.

Step 280: The eNB1 determines whether there is an X2 interface capable of transmitting UE-based signaling with the eNB2. If yes, step 290 is performed; otherwise, step 2130 is performed.

Step 290: The eNB1 encapsulates the bearer reconfiguration message into an X2 interface message and sends the message to the eNB2 through the X2 interface with the eNB2. The X2 interface message further carries the temporary identification information of the UE2, and the step 2100 is performed.

The bearer reconfiguration message includes the air interface resource configuration information and the straight allocated to the UE2. Connect to the communication user plane path identifier.

Specifically, the bearer reconfiguration message is an RRC message indicating a bearer configuration.

Step 2100: The eNB2 acquires the context information of the UE2 according to the temporary identifier information of the UE2 carried in the X2 interface message, and performs step 2110.

Further, the eNB2 saves the air interface resource configuration information carried in the X2 interface message and the direct communication user plane path identifier allocated to the UE2 as the context information of the UE2.

Step 2110: The eNB2 sends the bearer reconfiguration message encapsulated in the X2 interface message to the UE2, and performs step 2120.

Step 2120: The UE2 associates the received direct communication user plane path identifier with the air interface resource configuration information, and returns a seven-load configuration response message to the eNB1 through the eNB2.

UE2 can perform direct communication on the air interface resource indicated by the associated air interface resource configuration information of the corresponding direct communication user plane path identifier. Specifically, when performing data transmission, the modulation and coding mode is selected according to the air interface resource configuration information associated with the direct communication user plane path identifier, the transmission block size is set, and the data is received/transmitted on the specified time-frequency resource.

Step 2130: The eNB1 sends a direct communication setup message to the MME1, where the message carries

The bearer reconfiguration message of the UE2 is used to indicate that the UE2 performs the bearer configuration, and the step 2140 is performed.

The bearer reconfiguration message for the UE2 includes the air interface resource configuration information and the direct communication user plane path identifier allocated to the UE2.

Step 2140: The MME1 determines the MME (MME2) currently registered by the UE2 according to the temporary identification information of the UE2 (specifically, the GUTI), and sends a direct communication setup message to the MME2, where the message carries the bearer reconfiguration message for the UE2 and the location information of the UE2. And the temporary identification information of the UE2, go to step 2150.

Step 2150: The MME2 finds the eNB2 that the UE2 is camped on according to the location information of the UE2, and sends the bearer reconfiguration message for the UE2 and the temporary identifier information of the UE2 to the eNB2. Step 2160 is performed. Step 2160: The eNB2 acquires the context information of the UE2 according to the temporary identifier information of the UE2, and sends the received bearer reconfiguration message to the UE2, and step 2170 is performed.

Further, the eNB2 saves the direct communication user plane path identifier allocated to the UE2 and the air interface resource configuration information as the context information of the UE2.

Step 2170: The UE2 associates the received direct communication user plane path identifier with the air interface resource configuration information, and returns a bearer configuration response message to the eNB1 through the eNB2, the MME2, and the MME1.

Step 2180: After receiving the bearer configuration response message fed back by UE1 and UE2, the eNB1 returns a direct communication path setup response message to the MME1, indicating that the direct communication process is established.

Through the foregoing process, UE1 and UE2 can perform direct communication on the air interface resource indicated by the air interface resource configuration information associated with the corresponding direct communication user plane path identifier. Specifically, when performing data transmission, the modulation and coding mode is selected according to the air interface resource configuration information associated with the direct communication user plane path identifier, the transmission block size is set, and the data is received/transmitted on the specified time-frequency resource.

It should be noted that the interaction process between eNB1 and UE1 (steps 210 to 230), the interaction process between eNB1 and UE2 (steps 240 to 270, or step 240, step 280 to step 2110, or step 240, Step 2120 to step 2180), there is no strict timing relationship between the two independent interaction processes, which is subject to specific implementation.

In the above process, the signaling interaction in which UE1 and UE2 reside in eNB1 is as shown in FIG. 3.

UE1 resides in eNB1, UE2 resides in eNB2, and eNB1 and eNB2 can exchange UE signaling through X2 interface. The corresponding signaling interaction is shown in Figure 4. UE1 resides in eNB1, UE2 resides in eNB2, and eNB1 and eNB2 cannot communicate with each other through the X2 interface. The corresponding signaling interaction is shown in Figure 5.

Based on the same inventive concept as the method, the embodiment of the present invention further provides a base station, and the structure thereof is as follows. Figure 6, the specific implementation structure is as follows:

The direct communication request message receiving module 601 is configured to receive a request message for establishing direct communication between the calling user and the called user, where the calling user resides in the base station;

The resource allocation module 602 is configured to allocate a direct communication user path identifier to the calling user and the called user, and allocate air interface resource configuration information to a direct communication path between the calling user and the called user.

The bearer configuration indication module 603 is configured to send the allocated direct communication user plane path identifier and the air interface resource configuration information to the calling user and the called user, respectively, and instruct the calling user and the called user to perform Bearer configuration.

Preferably, the request message carries the temporary identification information of the called user and the location information of the called user.

Preferably, the base station provided by the embodiment of the present invention further includes a response processing module, configured to: after receiving the bearer configuration response message fed back by the calling user and the called user, sending to the sending end of the request message Feedback direct communication path setup response message.

Based on any of the foregoing base station embodiments, the bearer configuration indication module 603 is specifically configured to: initiate a bearer configuration radio resource control process to the calling user, and carry the radio resource control message to the calling user. Direct communication user plane path identifier and air interface resource configuration information.

On the basis of any of the foregoing base station embodiments, the bearer configuration indication module 603 sends the allocated direct communication user plane path identifier and the air interface resource configuration information to the called user, and instructs the called user to perform bearer configuration, according to different Application scenarios, there are different implementations, here are a few examples:

(1) The bearer configuration indication module 603 is specifically configured to:

Determining, according to the location information of the called user carried in the request message, that the called user resides in the base station;

Transmitting a radio resource control procedure of the bearer configuration to the called user, and carrying, in the radio resource control message, a direct communication user plane path identifier and an air interface resource configuration letter allocated to the called user Interest rate

After determining that the called user is camped on the base station, the bearer configuration indication module 603 is further configured to:

Obtaining context information of the called user according to temporary identification information of the called user carried in the request message.

(2) The bearer configuration indication module 603 is specifically configured to:

Determining, according to location information of the called user carried in the request message, a base station where the called user resides;

Transmitting, by the base station where the called user is camped, a radio resource control message indicating a bearer configuration to the called user, where the radio resource control message carries a direct communication user plane path identifier allocated to the called user and Air interface resource configuration information;

After determining the base station where the called user is camped, the bearer configuration indication module is further configured to: send the temporary identifier information of the called user carried in the request message to the called user to camp on Base station.

(3) The bearer configuration indication module 603 is specifically configured to:

Transmitting, by the mobility management entity of the calling user, the mobility management entity of the called user, and the base station where the called user resides, to the called user, to send a radio resource control message indicating a bearer configuration, The RRC message carries the direct communication user plane path identifier and the air interface resource configuration information allocated to the called user.

Based on the same inventive concept as the method, the embodiment of the present invention further provides a system for establishing a direct communication path, and the structure thereof is as shown in FIG. 7, including: a calling user 701, a called user 702, and a calling user resident. Base station 703;

The base station 703 where the calling user resides is configured to receive, after the request message for establishing direct communication between the calling user 701 and the called user 702, the calling user 701 and the called user. 702 assigns a direct communication user plane path identifier, and the calling user 701 and the called user 702 The direct communication path between the air interface resource allocation information is allocated; the allocated direct communication user plane path identifier and the air interface resource configuration information are respectively sent to the calling user 701 and the called user 702, and the calling user 701 is instructed. And the called user 702 performs a configuration;

The calling user 701 and the called user 702 are respectively configured to save the received direct communication user plane path identifier and the air interface resource configuration information according to the indication of the base station 703 where the calling user resides, and according to the The air interface resource configuration information associated with the direct communication user plane path identifier is used for data transmission.

Preferably, the calling user 701 and the called user 702 are further configured to: feed back a bearer configuration response message to the base station 703 where the calling user resides;

The base station 703 in which the calling subscriber resides is further configured to: after receiving the bearer configuration response message fed back by the calling user 701 and the called user 702, feed back a direct communication path to the sending end of the request message. Establish a response message.

Based on any of the foregoing system embodiments, preferably, the base station 703 where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the calling user 701, and indicates the The calling user 701 performs bearer configuration, including:

The base station 703 in which the calling subscriber resides initiates a radio resource control procedure for the bearer configuration to the calling user 701, and carries the direct communication user plane path identifier and the air interface allocated to the calling user 701 in the radio resource control message. Resource configuration information.

Based on any of the foregoing system embodiments, the base station 703 where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the called user 702, and indicates the called user 702. The bearer configuration is implemented according to different application scenarios. Here are a few examples:

(One)

Determining, according to the location information of the called user 702 carried in the request message, that the called user resides in the base station; Transmitting, by the called user 702, a radio resource control procedure of the bearer configuration, where the radio resource control message carries the direct communication user plane path identifier and the air interface resource configuration information allocated to the called user 702;

After determining that the called user is camped on the local base station, the base station where the calling user is located is further configured to: acquire the called party according to temporary identification information of the called user carried in the request message. User context information.

(2)

In the (2) implementation manner, the system provided by the embodiment of the present invention further includes the base station where the called user resides;

And sending, by the base station where the calling user is located, the allocated direct communication user plane path identifier and the air interface resource configuration information, and instructing the called user 702 to perform bearer configuration, including: according to the request message The location information of the called user 702 carried in the network, the base station where the called user is camped, the X2 interface message is sent to the base station where the called user is camped, and the X2 interface message carries the indication bearer configuration. a radio resource control message, where the radio resource control message carries a direct communication user plane path identifier and air interface resource configuration information allocated to the called user 702;

After determining the base station where the called user is camped, the base station where the calling user resides is further configured to: send the temporary identification information of the called user carried in the request message by using the X2 interface message Giving the base station where the called user resides;

The base station where the called user resides is configured to receive the X2 interface message, obtain the context information of the called user according to the temporary identification information of the called user, and carry the wireless information indicating the bearer configuration A resource control message is sent to the called user 702.

(three)

In the (3) implementation manner, the system provided by the embodiment of the present invention further includes: a mobility management entity of the calling user, a mobility management entity of the called user, and a resident user of the called user. Base station

The base station where the calling user camps sends the allocated direct communication user to the called user 702. The path identifier and the air interface resource configuration information, and the instructing the called user 702 to perform the bearer configuration, including: determining, according to the location information of the called user 702 carried in the request message, that the called user resides And transmitting, by the base station, to the mobility management entity of the calling user, a message that includes a radio resource control message indicating a bearer configuration, where the radio resource control message carries a direct communication user plane path identifier assigned to the called user 702 and Air interface resource configuration information;

The mobility management entity of the calling user is configured to: search for a mobility management entity of the called user, and send a radio resource control message indicating the bearer configuration to the mobility management entity of the called user, where the a message for calling the temporary identification information of the user and the temporary identification information of the called user;

The mobility management entity of the called user is configured to determine, according to location information of the called user, a base station where the called user camps, and send, to the base station where the called user resides, a configuration including an indication bearer configuration. a message of the radio resource control message and the temporary identification information of the called user;

The base station where the called user resides is configured to obtain context information of the called user according to temporary identification information of the called user, and the called user 702 sends a wireless resource control message indicating a bearer configuration.

Referring to FIG. 8, an embodiment of the present invention further provides a base station, which can implement the method provided by the foregoing embodiment of the present invention. The base station can include: a transceiver 801, a processor 802, and a memory 803.

The transceiver 801 may include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information. In this embodiment, the transceiver 801 can receive a request message for establishing direct communication between the calling user and the called user, the calling user camping at the base station;

a memory 802, configured to store one or more executable programs, configured to configure the processor; a processor 803 configured to configure the one or more executable programs, the one or more executable programs And performing the following method: allocating a direct communication user plane path identifier to the calling user and the called user, and allocating air interface resource configuration information to a direct communication path between the calling user and the called user; Transmitting, by the transceiver, the allocated direct communication user plane path identifier and the air interface resource configuration information to the calling user and the called user, respectively, and instructing the calling user and the called user to receive according to the respective Direct communication user plane path identification and air interface resource allocation Set the information for bearer configuration.

Further, the processor 803 is further configured to: after receiving, by the transceiver, a bearer configuration response message fed back by the calling user and the called user, sending, by the transceiver, the request message The sender feeds back the direct communication path setup response message.

Preferably, the processor 803 is specifically configured to: initiate a radio resource control process of the bearer configuration to the calling user, and carry the direct communication user plane path identifier and the air interface allocated to the calling user in the radio resource control message. Resource configuration information.

Preferably, the processor 803 is specifically configured to: determine, according to location information of the called user that is carried in the request message, a base station where the called user resides; if the base station where the called user resides is Transmitting a radio resource control procedure of the bearer configuration to the called user, and carrying the direct communication user plane path identifier and the air interface resource configuration allocated to the called user in the RRC message Information

After determining that the called user is camped on the local base station, the processor is further configured to: obtain the context information of the called user according to the temporary identifier information of the called user that is carried in the request message.

Preferably, the processor 803 is specifically configured to: determine, according to location information of the called user that is carried in the request message, a base station where the called user resides; if the base station and the host where the called user resides Sending, by the X2 interface, the direct communication user plane path identifier and the air interface resource configuration information allocated to the called user to the base station where the called user resides, where the base station where the calling user is located is not the same base station, And triggering, by the base station where the called user is camped, to send, to the called user, a radio resource control message indicating a bearer configuration, where the radio resource control message carries a direct communication user plane path identifier allocated to the called user. Air interface resource configuration information;

After determining the base station where the called user is camped, the processor is further configured to: send temporary identification information of the called user carried in the request message to a base station where the called user resides.

Preferably, the processor 803 is specifically configured to: use the called party according to the request message The location information of the user determines the base station where the called user camps; if the base station where the called user camps and the base station where the calling user is camped is not the same base station, the mobility of the calling user is passed. a management entity, a mobility management entity of the called user, and a base station where the called user resides, and sending, to the called user, a radio resource control message indicating a bearer configuration, where the radio resource control message is carried as The direct communication user plane path identifier and the air interface resource configuration information allocated by the called user.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, 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 be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. 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 a block or blocks of a flow or a flow and/or a block diagram of a flowchart Step.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and modifications The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

1. A method of establishing a direct communication path, characterized by: including:

After receiving the request message for establishing direct communication between the calling user and the called user, the base station where the calling user resides assigns a direct communication user plane path identifier to the calling user and the called user, and Allocate air interface resource configuration information to the direct communication path between the calling user and the called user; The base station where the calling user resides sends the allocated direct communication user plane path to the calling user and the called user respectively. identification and air interface resource configuration information, and instructs the calling user and the called user to perform bearer configuration according to the direct communication user plane path identification and air interface resource configuration information received respectively.

2. The method according to claim 1, characterized in that the request message carries the location information of the called user and the temporary identification information of the called user.

3. The method according to claim 1, characterized in that, the method further includes:

After receiving the bearer configuration response message fed back by the calling user and the called user, the base station where the calling user resides feeds back a direct communication path establishment response message to the sending end of the request message.

4. The method according to any one of claims 1 to 3, characterized in that the base station where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the calling user. , and instruct the calling user to perform bearer configuration, including:

The base station where the calling user resides initiates a radio resource control process for bearer configuration to the calling user, and carries the direct communication user plane path identifier allocated for the calling user and the air interface resource in the radio resource control message. Configuration information.

5. The method according to any one of claims 1 to 3, characterized in that the base station where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the called user. , and instruct the called user to perform bearer configuration, including:

The base station where the calling user is camped determines the base station where the called user is camped based on the location information of the called user carried in the request message; If the base station where the called user is camped is the base station where the calling user is camped, then the base station where the calling user is camped sends a radio resource control process of bearer configuration to the called user. In the radio resource control The message carries the direct communication user plane path identifier and air interface resource configuration information allocated to the called user;

After determining that the called user is camped on the base station, the method further includes:

The base station where the calling user resides obtains the context information of the called user based on the temporary identification information of the called user carried in the request message.

6. The method according to any one of claims 1 to 3, characterized in that the base station where the calling user is camped sends the allocated direct communication user plane path identifier and air interface resource configuration information to the called user. , and instruct the called user to perform bearer configuration, including:

The base station where the calling user is camped determines the base station where the called user is camped based on the location information of the called user carried in the request message;

If the base station where the called user is camped and the base station where the calling user is camped are not the same base station, the base station where the calling user is camped will use the X2 interface to communicate the direct communication assigned to the called user. The user plane path identifier and air interface resource configuration information are sent to the base station where the called user is camped, and trigger the base station where the called user is camped to send a radio resource control message indicating the bearer configuration to the called user, The radio resource control message carries the direct communication user plane path identifier and air interface resource configuration information allocated for the called user;

After determining the base station where the called user is camped, the method further includes:

The base station where the calling user is camped sends the temporary identification information of the called user carried in the request message to the base station where the called user is camped.

7. The method according to any one of claims 1 to 3, characterized in that the base station where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the called user. , and instruct the called user to perform bearer configuration, including:

If the base station where the called user is camped and the base station where the calling user is camped are not the same base station, Then the base station where the calling user is camped sends to the called user through the mobility management entity of the calling user, the mobility management entity of the called user, and the base station where the called user is camped. A radio resource control message indicating bearer configuration. The radio resource control message carries the direct communication user plane path identifier and air interface resource configuration information allocated to the called user.

8. The method according to claim 7, wherein the radio resource control message is a bearer reconfiguration message;

The base station where the calling user is camped sends an instruction to the called user through the mobility management entity of the calling user, the mobility management entity of the called user, and the base station where the called user is camped. Radio resource control messages carrying configuration, including:

The base station where the calling user resides sends a direct communication establishment message to the mobility management entity of the calling user. The direct communication establishment message carries a bearer reconfiguration message for the called user. The bearer reconfiguration message The configuration message carries the direct communication user plane path identifier and air interface resource configuration information allocated to the called user to trigger the following operations:

The mobility management entity of the calling user sends the direct communication establishment message to the mobility management entity of the called user;

The mobility management entity of the called user sends the bearer reconfiguration message for the called user and the temporary identification information of the called user to the base station where the called user resides;

The base station where the called user resides sends the bearer reconfiguration message to the called user, and obtains the context information of the called user based on the temporary identification information of the called user.

9. The method according to any one of claims 1 to 7, wherein the request message is generated by the core network service node device of the calling user after determining the calling user and the called party. After the user meets the conditions for proximity communication, it is sent to the base station where the calling user resides.

10. A base station, characterized in that it includes:

A direct communication request message receiving module, configured to receive a request message for establishing direct communication between the calling user and the called user, where the calling user resides in the base station;

A resource allocation module, configured to allocate direct communication user plane path identifiers to the calling user and the called user, and allocate air interface resource allocation to the direct communication path between the calling user and the called user. configuration information;

A bearer configuration indication module, configured to send the assigned direct communication user plane path identifier and air interface resource configuration information to the calling user and the called user respectively, and instruct the calling user and the called user to perform the configuration according to their respective The received direct communication user plane path identifier and air interface resource configuration information are used for bearer configuration.

11. The base station according to claim 10, wherein the request message carries the location information of the called user and the temporary identification information of the called user.

12. The base station according to claim 10, further comprising a response processing module for:

After receiving the bearer configuration response message fed back by the calling user and the called user, a direct communication path establishment response message is fed back to the sending end of the request message.

13. The base station according to any one of claims 10 to 12, characterized in that the bearer configuration indication module is specifically used for:

Initiate a radio resource control process of bearer configuration to the calling user, and carry the direct communication user plane path identifier allocated to the calling user and the air interface resource configuration information in the radio resource control message.

14. The base station according to any one of claims 10 to 12, characterized in that the bearer configuration indication module is specifically used for:

Determine the base station where the called user resides based on the location information of the called user carried in the request message;

If the base station where the called user is camped is the base station where the calling user is camped, the radio resource control process of the bearer configuration is sent to the called user, and is carried in the radio resource control message for the called user. The assigned direct communication user plane path identification and air interface resource configuration information;

After determining that the called user is camped on the base station, the bearer configuration indication module is further configured to: obtain the context of the called user according to the temporary identification information of the called user carried in the request message. information.

15. The base station according to any one of claims 10 to 12, characterized in that: the bearer The configuration indication module is specifically used for:

If the base station where the called user is camped is not the same base station as the base station where the calling user is camped, the direct communication user plane path identifier and air interface resource configuration information allocated to the called user are transmitted through the X2 interface. is sent to the base station where the called user is camped, and triggers the base station where the called user is camped to send a radio resource control message indicating the bearer configuration to the called user, where the radio resource control message carries the The direct communication user plane path identifier and air interface resource configuration information allocated by the called user;

After determining the base station where the called user is camped, the bearer configuration indication module is further configured to: send the temporary identification information of the called user carried in the request message to the base station where the called user is camped. base station.

16. The base station according to any one of claims 10 to 12, characterized in that the bearer configuration indication module is specifically used for:

If the base station where the called user is camped and the base station where the calling user is camped are not the same base station, then through the mobility management entity of the calling user, the mobility management entity of the called user, and the The base station where the called user resides sends a radio resource control message indicating bearer configuration to the called user, where the radio resource control message carries the direct communication user plane path identifier and air interface resource allocated for the called user. Configuration information.

17. A system for establishing a direct communication path, characterized by including:

The calling user, the called user, and the base station where the calling user resides;

The base station where the calling user resides is configured to, after receiving a request message for establishing direct communication between the calling user and the called user, allocate a direct communication user to the calling user and the called user. The plane path identifier is used to allocate air interface resource configuration information for the direct communication path between the calling user and the called user; sending the allocated direct communication user plane to the calling user and the called user respectively. Path identification and air interface resource configuration information, and instruct the calling user and the called user to perform bearer configuration;

The calling user and the called user are respectively configured to, according to instructions from the base station where the calling user resides, associate and save the received direct communication user plane path identifier and air interface resource configuration information, and perform the direct communication according to the instructions of the base station where the calling user resides. The air interface resource configuration information associated with the user plane path identifier is used for data transmission.

18. The system according to claim 17, wherein the request message carries the location information of the called user and the temporary identification information of the called user.

19. The system according to claim 17, wherein the calling user and the called user are further configured to feed back a bearer configuration response message to the base station where the calling user resides;

The base station where the calling user resides is also configured to, after receiving the bearer configuration response message fed back by the calling user and the called user, feed back a direct communication path establishment response message to the sending end of the request message. .

20. The system according to any one of claims 17 to 19, characterized in that the base station where the calling user resides sends the assigned direct communication user plane path identifier and air interface resource configuration to the calling user. information, and instruct the calling user to perform bearer configuration, including:

The base station where the calling user resides initiates a radio resource control process of bearer configuration to the calling user, and carries the direct communication user plane path identifier and air interface resource configuration information allocated for the calling user in the radio resource control message. .

21. The system according to any one of claims 17 to 19, characterized in that the base station where the calling user is camped sends the allocated direct communication user plane path identifier and air interface resource configuration to the called user. information, and instruct the called user to perform bearer configuration, including:

After it is determined that the called user is camped on this base station, the base station where the calling user is camped is also used to: The context information of the called user is obtained according to the temporary identification information of the called user carried in the request message.

22. The system according to any one of claims 17 to 19, further comprising a base station where the called user resides;

The base station where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the called user, and instructs the called user to perform bearer configuration, including: according to the request message carried The location information of the called user, determining the base station where the called user is camped, and sending an X2 interface message to the base station where the called user is camped, where the X2 interface message carries radio resource control indicating bearer configuration message, the radio resource control message carries the direct communication user plane path identifier and air interface resource configuration information allocated to the called user;

After determining the base station where the called user is camped, the base station where the calling user is camped is also used to: send the temporary identification information of the called user carried in the request message through the X2 interface message The base station camping for the called user;

The base station where the called user resides is configured to receive the X2 interface message, obtain the context information of the called user according to the temporary identification information of the called user, and use the instruction carried therein to carry the configured wireless The resource control message is sent to the called user.

23. The system according to any one of claims 17 to 19, further comprising a mobility management entity of the calling user, a mobility management entity of the called user, and the called user. Call the base station where the user resides;

The base station where the calling user resides sends the allocated direct communication user plane path identifier and air interface resource configuration information to the called user, and instructs the called user to perform bearer configuration, including: according to the request message carried The location information of the called user, determining the base station where the called user resides; sending a message including a radio resource control message indicating bearer configuration to the mobility management entity of the calling user, the radio resource control The message carries the direct communication user plane path identifier and air interface resource configuration information allocated for the called user;

The mobility management entity of the calling user is configured to search for the mobility management entity of the called user, and send the radio resource containing the instruction bearer configuration to the mobility management entity of the called user. A control message, the temporary identification information of the called user, and the message of the temporary identification information of the called user;

The mobility management entity of the called user is configured to determine the base station where the called user is camped based on the location information of the called user, and send a message containing an instruction bearer configuration to the base station where the called user is camped. Radio resource control messages and messages of temporary identification information of the called user;

The base station where the called user resides is configured to obtain context information of the called user based on the temporary identification information of the called user, and send a radio resource control message indicating bearer configuration to the called user.

24. A base station, characterized in that it includes: a transceiver, a processor, and a memory; the transceiver is used to receive a request message for establishing direct communication between the calling user and the called user, and the calling user Ask users to camp on this base station;

The memory is used to store one or more executable programs, and is used to configure the processor; the processor is configured with one or more executable programs, and the one or more executable programs are used to The following method is performed: allocating direct communication user plane path identifiers to the calling user and the called user, and allocating air interface resource configuration information to the direct communication path between the calling user and the called user; and, through the The transceiver sends the assigned direct communication user plane path identifier and air interface resource configuration information to the calling user and the called user respectively, and instructs the calling user and the called user to perform the operation according to the received information. Direct communication user plane path identification and air interface resource configuration information are used for bearer configuration.

25. The base station according to claim 24, wherein the request message carries the location information of the called user and the temporary identification information of the called user.

26. The base station according to claim 24, wherein the processor is further configured to: after receiving the bearer configuration response message fed back by the calling user and the called user through the transceiver, , the direct communication path establishment response message is fed back to the sending end of the request message through the transceiver.

27. The base station according to any one of claims 24 to 26, characterized in that the processor is specifically configured to: initiate a wireless resource control process of bearer configuration to the calling user. The source control message carries the direct communication user plane path identifier allocated to the calling user and the air interface resource configuration information.

28. The base station according to any one of claims 24 to 26, characterized in that the processor is specifically used for:

After determining that the called user is camped at the base station, the processor is further configured to: obtain context information of the called user based on the temporary identification information of the called user carried in the request message.

29. The base station according to any one of claims 24 to 26, characterized in that the processor is specifically used for:

After determining the base station where the called user is camped, the processor is further configured to: send the temporary identification information of the called user carried in the request message to the base station where the called user is camped.

30. The base station according to any one of claims 24 to 26, characterized in that the processor is specifically used for:

According to the location information of the called user carried in the request message, the called user is determined The base station where the user resides;