CN102685829A - Method, device and equipment for handover of user under base station straight-through architecture - Google Patents

Abstract

The present invention provides a user switching method, device and equipment under the base station direct architecture, the method includes: when the switching source base station recognizes that the user needs to switch cells, initiate a cell switching request; the switching source base station receives the cell switching response and forwards it to the user, To instruct the user to establish a wireless connection with the handover destination base station; when the handover source base station receives a cell handover success response, send the identity of the service peer base station to the handover destination base station or the service peer base station, so that the handover destination base station and the service peer base station are executed. The process of establishing a data direct channel between service peer base stations. According to the user switching method and device under the base station direct connection structure of the present invention, when the user switches cells, the transmission path of service data is also changed accordingly, which can ensure the normal transmission of service data.

Description

User switching method, device and equipment under base station direct connection architecture

technical field

The present invention relates to communication technologies, and in particular to a user switching method, device and equipment under a base station direct architecture.

Background technique

In the 3G system, base station networking adopts a hierarchical deployment mode. Multiple NodeBs (Node B) can be connected to a unified RNC (Radio Network Controller, wireless controller), and connected to the core network through the RNC.

As shown in Figure 1, when the source NodeB 101 covering the sender user needs to send service data to the target NodeB 104 covering the receiver user, the service data is first sent to the source RNC 102 through the source NodeB 101, and the source RNC 102 sends the service data to the source RNC 102. The business data is transmitted to the core network 103, aggregated through the core network 103, and then sent to the target RNC 105 to which the target NodeB 104 belongs, and then the service data is sent to the target NodeB 104 through the target RNC 105 to which the target NodeB 104 belongs, and then through the target NodeB 104 The service data is sent to the recipient user, thereby completing the end-to-end transmission of the service data.

Under the existing network architecture, when a user moves to another cell, it needs to be coordinated by the core network control entity, and the control of the core network requires multiple data forwarding between base stations. increase the switching delay.

Contents of the invention

The present invention provides a user switching method, device and equipment under a base station direct architecture, which are used to reduce the time required for a user to perform base station switching.

The first aspect of the present invention is to provide a user switching method under the base station direct architecture, including:

When the handover source base station recognizes that the user needs to switch cells, initiate a cell handover request to the corresponding handover target base station;

The handover source base station receives the cell handover response returned by the handover target base station, and forwards it to the user, so as to instruct the user to release the wireless connection with the handover source base station and establish a connection with the handover target base station wireless connection between

When the handover source base station receives the cell handover success response returned by the handover target base station, send the identity of the service peer base station to the handover target base station, or send the handover target base station identity to the service peer base station, so that the handover target base station or the service peer base station triggers the execution of the current data direct channel establishment process between the handover target base station and the service peer base station, and the two ends of the current data direct channel are respectively the handover The target base station and the service peer base station.

Another aspect of the present invention is to provide a user switching device under the base station direct architecture, including:

Initiating a request module, configured to initiate a cell switching request to a corresponding switching target base station when it is recognized that the user needs to switch cells;

A forwarding module, configured to receive a cell handover response returned by the handover destination base station, and forward it to the user, so as to instruct the user to release the wireless connection with the handover source base station, and establish a connection with the handover destination base station Wireless connections;

A sending identification module, configured to send the identification of the service peer base station to the handover target base station when receiving the cell handover success response returned by the handover target base station, or send the handover target base station identity to the service peer base station so that the handover target base station or the service peer base station triggers the execution of the current data direct channel establishment process between the handover target base station and the service peer base station, and the two ends of the current data direct channel are respectively the Handover the target base station and the service peer base station.

Another aspect of the present invention is to provide a handover target base station, including:

A module for receiving a cell switching request, configured to receive a cell switching request sent by a switching source base station, and return a cell switching response to the switching source base station according to the cell switching request;

The service peer base station identifier receiving module is used to receive the service peer base station identifier and send judgment information to the management control center, the judgment information including handover target base station identifier, handover peer base station identifier and service identifier.

Another aspect of the present invention is to provide a service peer base station, including:

The second sending request module is configured to, when receiving the establishment instruction, initiate a data direct channel establishment request to the handover destination base station according to the handover destination base station identifier in the establishment instruction, the establishment instruction including the handover purpose a second transmission path between the base station and the service counterpart base station;

The second establishment module is configured to establish a current data direct channel with the handover target base station when receiving the data direct channel establishment response returned by the handover target base station.

Another aspect of the present invention is to provide a service data exchange system, including the user switching device according to the above-mentioned base station direct architecture, the above-mentioned handover destination base station, and the above-mentioned service peer base station.

According to the user switching method, device and equipment under the base station direct connection architecture of the present invention, when the user switches cells, the request and operation of the switching path are directly performed between the base stations, so that the transmission path of the service data is changed in time, not only can The normal transmission of business data is guaranteed, and since the transmission of requests and business data does not need to be forwarded through the core network, the time required for users to switch base stations is reduced to a certain extent.

Description of drawings

FIG. 1 is a schematic structural diagram of a service data transmission device in the prior art;

FIG. 2 is a schematic structural diagram of a base station direct architecture according to an embodiment of the present invention;

3A is a schematic diagram of the signaling interaction process between the source base station, the passing base station and the target base station from the perspective of the control plane protocol stack of the I-X2 interface;

3B is a schematic diagram of the process of exchanging service data between the source base station, the passing base station, and the target base station from the perspective of the user plane protocol stack of the I-X2 interface;

FIG. 4 is a schematic flowchart of a user handover method under a base station direct architecture according to another embodiment of the present invention;

5 is a schematic structural diagram of a user switching device under a base station direct architecture according to another embodiment of the present invention;

6 is a schematic structural diagram of a user switching device under a base station direct architecture according to yet another embodiment of the present invention;

7 is a schematic structural diagram of a user switching device under a base station direct architecture according to another embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a user switching device under a base station direct architecture according to another embodiment of the present invention.

Detailed ways

Embodiment one

This embodiment provides a user handover method in a base station direct architecture. The method in this embodiment is particularly applicable to a base station direct architecture in which data transmission can be directly performed between base stations. For example, as shown in Figure 2, the access network includes a management control center and multiple base stations, and each base station is connected to the management control center. The management control center receives the service request of each base station, and sends connection signaling according to the service request, so that the data direct channel is established between the base stations, so as to transmit data or signaling between the base stations.

In the following description of this implementation, the transmission of data and signaling between the base stations is connected through the established data direct channel between the base stations. The process of establishing the data through channel may be as follows.

For the network architecture shown in Figure 2, the process of establishing a direct data channel is as follows:

Step 2011: the management control center receives the service request initiated by the sender user reported by the source base station, and the service request includes the sender user ID, service ID and receiver user ID;

Step 2021: The management control center determines the target base station to which the receiving user belongs according to the receiving user ID;

Step 2031: The management control center determines the transmission path of the service data according to the source base station and the target base station, and the transmission path includes the source base station, the target base station and the base stations through which the service data passes from the source base station to the target base station;

Step 2041: The management and control center allocates connection signaling to the source base station, via base station and target base station according to the transmission path and service identifier;

Step 2051: the source base station, the passing base station and the target base station transmit service data according to the connection signaling and the service identifier.

The following uses the network architecture shown in FIG. 2 as an example to illustrate how to establish a direct data channel between the source base station and the target base station.

For the source base station, after receiving the connection establishment signaling, it obtains the address of the passing base station to which the service data is to be sent, and recognizes that it needs to establish a data direct channel with the passing base station, so it opens its own direct function interface , such as the I-X2 interface. Then, the source base station sends a direct control message to the passing base station along the transmission path through its own direct function interface, so as to establish a data direct channel with the passing base station.

For the passing base station, when the connection signaling is received, the address of the target base station is obtained from it, and it is recognized that a direct data channel needs to be established with the target base station, so it opens its own direct function interface, such as the I-X2 interface, after receiving the target base station After the response returned by the base station, a direct data channel between the passing base station and the target base station is established. Then, after receiving the service data sent by the source base station via the base station, it identifies the service data identifier, thereby knowing the address of the target base station that needs to send the service data according to the connection signaling, and then sends the target base station to the target base station through the established data direct channel. Send the business data. In particular, when the passing base station includes multiple sub-base stations, after receiving the connection signaling, each sub-base station except the last sub-base station in the transmission path obtains the information of the next adjacent sub-base station to which the service data needs to be sent. address, so open its own direct function interface, such as the I-X2 interface, after receiving the response returned by the next adjacent sub-base station, establish a data direct channel between itself and the next adjacent sub-base station. Then, after receiving the service data sent by the previous adjacent sub-base station, it identifies the service data identifier, so as to know which adjacent sub-base station the service data needs to be sent to according to the connection signaling, and then passes the established The data direct channel sends service data to the next adjacent sub-base station. The same process is performed for the last sub-base station in the transmission path, except that the address of the target base station is obtained from the connection signaling, and a direct data channel is established with the target base station.

For the target base station, after receiving the connection establishment signaling, it obtains the address and transmission path of the passing base station, and recognizes that it needs to establish a data direct channel with the passing base station, so it opens its own direct function interface, such as the I-X2 interface. Then, the target base station waits to receive the direct control message sent by the passing base station, and after receiving the direct control message sent by the passing base station, sends a direct control response message to the passing base station along the transmission path through its own direct function interface. After receiving the direct control response message returned by the target base station, a data direct channel is established with the target base station.

The I-X2 interface in this embodiment is an open interface, and its main function is to realize the exchange of signaling and service data between base stations. From a logical point of view, the I-X2 interface is a point-to-point interface between base stations. In this embodiment, the I-X2 interface is mainly responsible for realizing the signaling interaction between the source base station, the passing base station and the target base station, and completing the bearer of the user plane transmission data (that is, service data) of the source base station, the passing base station and the target base station transmission. Figure 3A shows the process of signaling interaction between the source base station, the passing base station, and the target base station from the perspective of the control plane protocol stack of the I-X2 interface; Figure 3B shows the source station from the perspective of the user plane protocol stack of the I-X2 interface The process of exchanging service data between the base station, the passing base station and the target base station. As shown in FIG. 3A , the control plane protocol stack of the I-X2 interface mainly includes: a physical layer, a data link layer, an IP layer, a stream control transmission protocol layer, and an application layer. As shown in Figure 3B, the user plane protocol stack of the I-X2 interface mainly includes: a physical layer, a data link layer, an IP layer, a User Datagram Protocol (UDP for short) layer, a general data transmission layer, and a service data layer.

The foregoing manner of establishing a data direct channel is for illustration only, and this embodiment does not limit how to establish a data direct channel. Under the above-mentioned network architecture, all data transmissions performed by users when performing base station handover operations can be completed through the data direct channel.

It should be pointed out that the following "handover source base station" can be the base station connected by the sending user or the base station connected by the receiving user, and the corresponding "handover destination base station" is consistent with the handover source base station, which can be the above The base station may also be the aforementioned target base station. Specifically, when both the handover source base station and the handover destination base station are source base stations, the service peer base station is the above-mentioned target base station, and when the handover source base station and the handover destination base station are both target base stations, the service peer base station is the above-mentioned source base station. base station.

As shown in FIG. 4, it is a schematic flowchart of a user handover method under the base station direct architecture according to this embodiment, including:

Step 401, when the handover source base station recognizes that the user needs to switch cells, initiate a cell handover request to the corresponding handover target base station.

Here, the handover source base station refers to the base station to which the user is currently connected. There are many methods for the handover source base station to identify that the user needs to handover the cell. For example, the handover source base station receives the measurement report reported by the user, and judges whether the user needs to handover the cell according to the signal power and/or current geographic location information in the measurement report. When the signal power of the user is found to be weak, it is likely that the user has moved to the signal coverage of another base station, that is, the signal power of the other base station is relatively strong. At this time, the user collects the signal power of adjacent base stations and forms a measurement report, and then the user selects a base station with the largest signal power value as the handover target base station from each measurement report, and sends the handover target base station ID of the handover target base station to the handover source base station; or the user collects the signal power of adjacent base stations and forms a measurement report, and sends the measurement report containing the strength of the signal power of each base station that can be connected to the user to the handover source base station, and the handover source base station is based on the measurement report The handover destination base station is selected, or the handover source base station sends the measurement report reported by the user to the management control center, and the management control center selects the handover destination base station according to the measurement report. Of course, the handover source base station can also directly detect the geographic location information of the user, or receive the geographic location information reported by the user every preset period, and determine whether the user needs to switch cells. There are many other methods for the handover source base station to determine whether the user needs to handover the cell, which is not limited in this embodiment.

The cell handover request may include the user's mobile phone number and IMEI (International Mobile Equipment Identity, International Mobile Equipment Identity), so that the handover destination base station identifies which user to establish a wireless connection with.

Step 402, the handover source base station receives the cell handover response returned by the handover target base station, and forwards it to the user, instructing the user to release the wireless connection with the handover source base station and establish a wireless connection with the handover target base station.

If the handover source base station receives the cell handover response returned by the handover target base station, it indicates that the handover target base station has made corresponding preparations, that is, reserves resources for users to establish wireless connections with it. The cell handover response may include the identification number of the handover target base station. The handover source base station sends the cell handover response to the user. After receiving the cell handover response, the user releases the wireless connection with the handover source base station and establishes a connection with the handover target base station.

Step 403, when the handover source base station receives the cell handover success response returned by the handover target base station, send the identity of the service peer base station to the handover target base station, or send the identity of the handover target base station to the service peer base station, so that the handover target base station Or the service peer base station triggers the execution of the current data direct channel establishment process between the handover destination base station and the service peer base station, and the two ends of the current data direct channel are the handover destination base station and the service peer base station respectively.

The handover source base station receives the cell handover success response returned by the handover target base station, which means that the handover target base station has established a wireless connection with the user. At this time, the target base station of the handover and the peer base station of the service may be instructed to establish a current data direct channel for transmission of service data. The two ends of the current data direct channel are the handover target base station and the service peer base station respectively, that is, the handover target base station receives the data uploaded by the sender user, and the service peer base station sends data to the receiver user, or the service peer base station receives the sender user The data is uploaded, and the handover target base station sends the data to the receiving user.

The process of establishing the current direct data channel between the handover destination base station and the service peer base station is consistent with that described in steps 2011-2051, and will not be repeated here.

It should be pointed out that the current data direct channel established between the handover destination base station and the service peer base station is likely to overlap with the original data direct channel established between the handover source base station and the service peer base station , for example, the handover target base station is a transit base station in the original data direct channel. At this time, you can choose to re-establish the current data direct channel between the handover target base station and the service peer base station, or you can choose to The direct channel is used for data transmission, but no matter what, it belongs to the scope of the "establishment" of this embodiment, because the current data direct channel established in this embodiment is based on the handover target base station and the service peer base station. .

According to the user switching method under the base station direct connection architecture of this embodiment, when the user switches cells, the request and operation of the switching path are directly performed between the base stations, so that the transmission path of the service data is changed in time, which can not only ensure that the service data The normal transmission of requests and business data does not need to be forwarded through the core network, which reduces the time required for users to switch base stations to a certain extent.

Embodiment two

This embodiment makes a further supplementary description of the user switching method under the base station direct connection architecture of the first embodiment.

This embodiment further explains the data direct channel establishment process between the handover target base station or the service peer base station triggered by the handover target base station and the service peer base station in step 403, and other steps are consistent with the first embodiment. This will not be repeated here.

The handover target base station or the service peer base station triggers the execution of the data direct channel establishment process between the handover target base station and the service peer base station, specifically including:

Step A: The handover destination base station or the service peer base station sends judgment information to the management control center, and the judgment information includes the handover destination base station identifier, the service peer base station identifier and the service identifier.

The service identifier in this step is the identifier of a certain service data sent by a certain user, and different service data correspond to different service identifiers. When the base station transmits multiple service data at the same time, the base station can determine which base station needs to forward the service data uploaded by the user through the service identifier. After receiving the judging information, the management control center can obtain the identity of the handover source base station and the identity of the handover destination base station according to the service identity. It is conceivable that when the original data direct channel between the handover source base station and the service peer base station is established, it is established by sending connection signaling from the management control center, and the management control center already knows that the data direct channel The corresponding service identifier, so the management control center can identify the corresponding handover source base station and service peer base station through the service identifier. The identification of the service peer base station is sent in the judgment information at the same time, so that the management control center recognizes that the current data direct channel needs to be established between the handover target base station and the service peer base station according to the pre-agreed agreement. Step B: When the management control center judges according to the judgment information that the number of base stations included in the first transmission path between the handover source base station and the service peer base station is greater than the number of base stations contained in the second transmission path between the handover destination base station and the service peer base station When the number of base stations is large, the handover target base station or service peer base station receives the establishment instruction returned by the management control center, and triggers the establishment process of the current data direct channel according to the establishment instruction. The establishment instruction includes the second transmission path.

When the handover destination base station or the service peer base station receives the establishment instruction representing the need to establish the current data direct channel, it will trigger the operation of establishing the current data direct channel. The establishment instruction includes the second transmission path, so that the handover target base station or the service peer base station clearly needs to establish the current data direct channel with which base station. This is because the handover target base station or the service peer base station may receive multiple establishment signalings at the same time. When the establishment signaling includes a transmission path, the handover target base station can know the service corresponding to the current data direct channel to be established next. identification, and when the corresponding business data is received, it is transmitted through the established current data direct channel.

It should be noted that the original data direct channel established between the handover source base station and the service peer base station may need to pass through 0, 1 or more base stations, and the path established through these base stations in sequence is The first transmission path. The first transmission path uses the handover source base station and the service peer base station as two ends. Similarly, the current data direct channel established between the handover target base station and the service peer base station may need to pass through 0, 1 or more base stations, and the path established through these base stations in sequence is the second transmission path. When the base stations included in the first transmission path are larger than the base stations in the second transmission path, it is necessary to re-establish the current data direct channel. If some of the current data direct channels overlap with the original data direct channels, the original data direct channels can be used. For example, base station P and base station Q belong to two adjacent base stations in the first transmission path and the second transmission path, and a data direct channel corresponding to the service identifier has been established between base station P and base station Q, then when establishing the current data For the direct channel, the original data direct channel between the base station P and the base station Q may be used. Before this, the management control center can choose whether to send the connection signaling to the base station P and the base station Q, when the management control center sends the connection signaling to the base station P and the base station Q, the base station P and the base station Q recognize that they have established a connection with the service When identifying the corresponding data direct channel, you can choose not to respond to the connection signaling; when the management and control center does not send connection signaling to base station P and base station Q, when base station P or base station Q receives the service data corresponding to the service identifier , the base station P sends to the base station Q through the original data direct channel, or the base station Q transmits to the base station P through the original data direct channel.

In addition, it should be pointed out that if the first transmission path is not larger than the second transmission path, the first transmission path can continue to be used. Specifically, the service peer base station receives the service data sent by the sender user, and sends it to the handover source base station through the data direct channel corresponding to the first transmission path, and then the handover source base station passes the established handover data with the handover destination base station. The data direct channel is sent to the receiving user, or the handover destination base station receives the service data sent by the sending user and sends it to the handover source base station through the handover data direct channel established between the handover destination base station and the handover source base station, and the handover source base station receives After receiving the service data, it is sent to the service peer base station through the data direct channel corresponding to the first transmission path, and then sent to the receiving user by the service peer base station. That is to say, the data through channel corresponding to the first transmission path and the switched data through channel are combined as the current data through channel.

Optionally, the method of this embodiment also includes after step B:

In step C, the management control center triggers a data direct channel release process between the base stations in the non-duplicated part of the first transmission path and the second transmission path.

When the management control center compares the first transmission path with the second transmission path, if it recognizes that there is a non-repetitive part in the first transmission path and the second transmission path, it can send a data direct channel release signaling to the corresponding base station in the non-repetitive part , the data direct channel release signaling may include an identifier of an adjacent base station in the first transmission path, so that the corresponding base station knows which base station to release the data direct channel with. Releasing the data pass-through channel can avoid occupying network resources, further reducing the burden on the entire network.

For example, when the first transmission path from the source base station to the target base station is: base station R1, base station R2, base station R3, and base station R4, and the second transmission path from the source base station to the target base station is S1, R3, and R4, By comparing the first transmission path with the second transmission path, the management and control center can identify the repeated parts as R3 and R4. At this time, it sends the data direct channel release signaling to the base station R1 and the base station R2, and the base station R1 and the base station R2 receive When the data direct channel release signaling, it sends a data direct channel release request to the adjacent next base station, and when receiving the data direct channel release response replied by the adjacent next base station, it releases the data corresponding to the service identifier Pass-thru. For example, base station R1 sends a data direct channel release request to base station R2, base station R2 returns a data direct channel release response to base station R1, and base station R1 releases the data direct channel with base station R2.

Embodiment three

This embodiment further limits the user switching method under the base station direct connection architecture of the first and second embodiments above.

In this embodiment, the specific operation of initiating a cell switching request to the corresponding switching target base station when the switching source base station recognizes that the user needs to switch cells in step 401 is explained. Other steps are consistent with the above-mentioned embodiments. This will not be repeated here.

Specifically, as follows:

Step 501, the handover source base station sends a service request to the management control center, the service request includes the handover source base station identifier, the cell handover request identifier, the handover destination base station identifier and/or the measurement report uploaded by the user, so that the management control center can determine according to the service request The target base station is handed over, and the third transmission path is determined according to the base station identified by the handover target.

When the switching source base station recognizes that the user needs to switch cells, it will report the service request to the management control center through the interface with the management control center. The handover source base station may be a base station connected to the sending user or a base station connected to the receiving user.

Step 502, the handover source base station receives the connection establishment signaling sent by the management control center, so that the handover source base station and the handover destination base station establish a data direct channel according to the connection establishment signaling, and the connection establishment signaling includes the handover source base station address, the handover destination base station address and third transmission path.

After the handover source base station and the handover destination base station are determined, the management control center selects a path from multiple paths for the handover source base station and the handover destination base station according to a preset selection strategy as the third transmission path used when establishing the direct data channel. Wherein, the preset selection policy may be a policy selected according to the principle of the shortest path, or a policy selected according to the principle of the lightest path load, etc., which is not limited in this embodiment.

After determining the handover source base station, the handover destination base station, and the third transmission path, the management control center sends connection establishment signaling to the handover source base station and the handover destination base station respectively, and sends the address of the handover source base station, the address of the handover destination base station, and the selected first The three transmission paths are carried in the connection establishment signaling, so that the handover source base station and the handover destination base station establish a handover data direct channel according to the information in the connection establishment signaling.

Step 503, the handover source base station sends a cell handover request to the handover target base station through the handover data direct channel.

After the data direct channel is established between the handover source base station and the handover target base station, the cell handover request information between the handover source base station and the handover target base station can be transmitted through the data direct channel without the handover source base station or the handover target base station. It is transmitted to the central control node of the core network through the backbone transmission network, and then forwarded by the central control node in a unified manner. This embodiment is especially suitable for high-bandwidth services, such as multimedia services such as video services and P2P services.

In the user handover method under the base station direct connection architecture of this embodiment, when the handover source base station needs to send a cell handover request to the handover destination base station, the service request carrying the cell handover request identifier is reported to the management control center, and the management control center reports to the handover source respectively The base station and the handover destination base station send connection establishment signaling so that the handover source base station and the handover destination base station establish a data direct channel to transmit the cell handover request, so that the cell handover request no longer passes through the central control node of the core network, reducing The central control node and the burden of the backbone transmission network.

Embodiment Four

This embodiment further describes the user switching method under the base station direct connection architecture of the second and third embodiments.

In this embodiment, further description will be made on the steps of the handover destination base station in step B in step 403 triggering the establishment of the current data through channel establishment process according to the establishment instruction.

In this embodiment, the handover target base station triggers the establishment of the current data direct channel establishment process according to the establishment instruction and specifically includes:

Step 4031a, the handover target base station initiates a data direct channel establishment request to the service peer base station according to the establishment instruction.

In step 4032a, when the handover target base station receives the data direct channel establishment response returned by the service peer base station, it establishes the current data direct channel with the service peer base station.

Next, all responses and data to be sent by the handover source base station will be sent through the established data direct channel.

The specific process of establishing a data direct channel between the handover target base station and the service peer base station is the same as the process of establishing a data direct channel between the source base station and the target base station in Embodiment 1, and will not be repeated here.

According to the user handover method under the base station direct connection architecture of this embodiment, the handover source base station initiates a cell handover request to the handover destination base station, so as to change the connection between the user and the handover source base station to the connection between the user and the handover destination base station, and the handover destination The base station then establishes a current data direct channel with the business peer base station for business data transmission, which can ensure the continuity of data transmission between the user and the business peer base station, and will not cause the data to not be transmitted in time due to poor user transmission signals .

Embodiment five

This embodiment further describes the user switching method under the base station direct connection architecture of the second and third embodiments.

In this embodiment, further description will be made on the step B in step 403 to establish the data direct channel establishment process steps by the service peer base station according to the establishment instruction. repeat.

In this embodiment, the service peer base station establishes a data direct channel establishment process according to the establishment instruction, including specifically:

In step 4031b, when the opposite service base station receives the establishment instruction, it initiates a data direct channel establishment request to the handover destination base station according to the handover destination base station identifier in the establishment instruction.

In step 4032b, when the opposite service base station receives the data direct channel establishment response returned by the handover target base station, it establishes a data direct channel with the handover target base station.

The specific process of establishing a data direct channel between the handover target base station and the service peer base station is the same as the process of establishing a data direct channel between the source base station and the target base station in Embodiment 1, and will not be repeated here.

Next, all responses and data to be sent by the handover target base station will be sent through the established direct channel.

According to the user handover method under the base station direct architecture of this embodiment, the handover source base station sends the handover destination base station identifier to the service peer base station, so that the service peer base station and the handover destination base station establish a current data direct channel for service data transmission , which can ensure the continuity of data transmission between the user and the service peer base station, and will not cause the data to not be transmitted in time due to the poor transmission signal of the user.

Embodiment six

This embodiment provides a user switching device under the base station direct architecture, which is used to implement the user switching method under the base station direct architecture of the first embodiment. In this embodiment, the user switching device under the base station direct connection architecture is integrated in the switching source base station, of course, it can also be set separately. Next, the integration of the user handover device under the base station direct architecture into the handover source base station will be described.

As shown in FIG. 5 , it is a schematic structural diagram of a user switching device under the base station direct architecture according to this embodiment. The user switching device under the direct connection architecture of the base station includes: an initiating request module 601 , a forwarding module 602 , and a sending identification module 603 .

Wherein, the initiating request module 601 is respectively connected with the user 610 and the handover destination base station 620, and is used for initiating a cell handover request to the corresponding handover destination base station 620 when it is recognized that the user 610 needs to switch cells; the forwarding module 602 is respectively connected with the user 610 and the handover destination The destination base station 620 is connected to receive the cell handover response returned by the handover destination base station 620, and forward it to the user 610, so as to instruct the user 610 to release the wireless connection with the handover source base station 630 and establish a connection with the handover destination base station 620. wireless connection; the sending identification module 603 is respectively connected with the handover target base station 620 and the service peer base station 640, and is used to send the service peer base station 640 identification to the handover target when receiving the cell handover success response returned by the handover target base station 620 The base station 620, or send the identity of the handover target base station to the service peer base station 640, so that the handover target base station 620 or the service peer base station 640 triggers the execution of the current data direct channel establishment process between the handover target base station 620 and the service peer base station 640 . The specific operation method of the user switching device under the direct connection architecture of the base station in this embodiment is consistent with that described in Embodiment 1. When the handover target base station 620 receives the service peer base station identifier, and the service peer base station 640 When the base station is identified, the operation of sending judgment information to the management control center is consistent with the second embodiment, and will not be repeated here.

According to the user switching device under the direct connection architecture of the base station in this embodiment, the user 610 can directly request and operate the switching path through the base stations when switching cells, so that the transmission path of service data can be changed in time, which can not only ensure business Normal transmission of data, and since the transmission of requests and service data does not need to be forwarded through the core network, the time required for user 610 to switch between base stations is reduced to a certain extent.

Embodiment seven

This embodiment further describes the user switching device under the base station direct connection architecture of the sixth embodiment.

This embodiment only further explains the initiating request module, which is used to implement the user handover method under the base station direct architecture of the third embodiment, and other structures are consistent with those in the sixth embodiment, and will not be repeated here.

Specifically, as shown in FIG. 6 , the initiating request module 601 includes a sending service request submodule 701 , a receiving connection establishment signaling submodule 702 and a sending cell switching request submodule 703 .

Among them, the sending service request sub-module 701 is connected with the user 610, and is used to send a service request to the management control center (not shown in the figure) when it is recognized that the user 610 needs to switch cells. The service request includes the identity of the switching source base station, the cell The handover request identifier, the handover target base station identifier and the measurement report uploaded by the user, so that the management control center determines the handover target base station according to the service request, and determines the transmission path according to the handover target base station; the receiving connection establishment signaling submodule 702 is used to receive the management control The connection establishment signaling sent by the center, so that the handover source base station 630 and the handover destination base station 620 establish a data direct channel according to the connection establishment signaling. The connection establishment signaling includes the handover source base station address, the handover destination base station address and the transmission path; the sending cell The handover request submodule 703 is respectively connected with the receiving connection establishment signaling submodule 702 and the handover destination base station 620, and is used for sending a cell handover request to the handover destination base station 620 through the handover data direct channel.

According to the user switching device under the direct connection architecture of the base station in this embodiment, the transmission path selection and the connection establishment signaling are sent through the management control center to establish a data direct channel, so that subsequent signaling interactions can be performed through this data through the channel.

Embodiment eight

This embodiment provides a handover destination base station, which is used to implement the user handover method under the base station direct architecture of Embodiment 1 to Embodiment 5.

As shown in FIG. 7 , the handover target base station 620 in this embodiment includes a module 801 for receiving a cell handover request and a module 802 for receiving a service peer base station identification.

Wherein, the receiving cell switching request module 801 is connected to the switching source base station 630, specifically connected to the forwarding module 602 and the sending cell switching request submodule 703 in the sending request module 601, for receiving the cell switching request sent by the switching source base station 630, And return a cell switching response to the handover source base station 630 according to the cell handover request; the receiving service peer base station identification module 802 is connected with the handover source base station 630, specifically connected with the sending identification module 603 in the handover source base station 630, for receiving the handover source base station 603 sends the ID of the service peer base station, and sends judgment information to the management control center (not shown in the figure), where the judgment information includes the handover destination base station ID, the handover peer base station ID, and the service ID. The identity of the service peer base station means the identity of the service peer base station 640 .

Optionally, the handover destination base station in this embodiment further includes a first sending request module 803 and a first establishing module 804 . Among them, the first sending request module 803 is connected with the service peer base station 640, and is used to initiate a data direct channel establishment request to the service peer base station 640 according to the establishment instruction identifier issued by the management control center (not shown in the figure), and the establishment instruction Including the second transmission path between the handover target base station and the service peer base station; the first establishment module 804 is connected to the service peer base station 640, and is used to establish The current direct data channel between the target base station 620 and the service peer base station 640 is switched.

Modules in the handover source base station 630 in this embodiment are consistent with those in Embodiment 6 and Embodiment 7, and will not be repeated here.

According to the user switching device under the base station direct connection architecture of this embodiment, the cell switching request is initiated to the switching target base station 620 through the switching source base station 630, so as to change the connection between the user 610 and the switching source base station 630 to the connection between the user 610 and the switching target base station 620. In order to ensure the continuity of data transmission between the user 610 and the service peer base station 640, the handover target base station 620 will establish a current data direct channel with the service peer base station 640 to transmit service data, and the continuity of data transmission between the user 610 and the service peer base station 640 will not be caused by the user 610 The transmission signal is not good so that the data cannot be transmitted in time.

Embodiment nine

This embodiment provides a service peer base station, which is used to implement the user handover method under the base station direct architecture of Embodiment 1 to Embodiment 5.

As shown in FIG. 8 , the service peer base station 640 in this embodiment includes a second sending request module 901 and a second establishing module 902 .

Wherein, the second sending request module 901 is connected with the handover destination base station 620, and is used for initiating a data direct channel establishment request to the handover destination base station 620 according to the handover destination base station identifier in the establishment instruction when receiving the establishment instruction issued by the management control center The establishment instruction includes the second transmission path between the handover target base station and the service peer base station; the second establishment module 902 is connected with the handover target base station 620, and is used for when receiving the data direct channel establishment response returned by the handover target base station 620, The current data direct channel between the service peer base station 640 and the handover destination base station 620 is established.

Modules in the handover source base station 630 in this embodiment are consistent with those in Embodiment 6 and Embodiment 7, and will not be repeated here.

According to the user switching device under the base station direct connection architecture of this embodiment, the handover source base station 630 sends the handover destination base station identifier to the service peer base station 640, so that the service peer base station 640 and the handover destination base station 620 establish a data direct channel for service The data transmission can ensure the continuity of data transmission between the user 610 and the service peer base station 640, and the data will not be unable to be transmitted in time due to the poor transmission signal of the user 610.

It should be pointed out that since the handover source base station itself can also be the handover destination base station or the service peer base station, the receiving cell handover request module, the service peer base station identification module, the first sending request module and the The first establishment module can also be set in the handover source base station, and the second sending request module and the second establishment module in Embodiment 9 can also be set in the handover source base station.

The present invention also provides a service data exchange system, including the user switching device under the base station direct connection structure of the sixth or seventh embodiment, the handover destination base station of the eighth embodiment, and the opposite service base station of the ninth embodiment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (13)

1. A user handover method under a base station direct connection architecture, characterized in that, comprising: When the handover source base station recognizes that the user needs to switch cells, initiate a cell handover request to the corresponding handover target base station; The handover source base station receives the cell handover response returned by the handover target base station, and forwards it to the user, so as to instruct the user to release the wireless connection with the handover source base station and establish a connection with the handover target base station wireless connection between When the handover source base station receives the cell handover success response returned by the handover target base station, send the identity of the service peer base station to the handover target base station, or send the handover target base station identity to the service peer base station, so that the handover target base station or the service peer base station triggers the execution of the current data direct channel establishment process between the handover target base station and the service peer base station, and the two ends of the current data direct channel are respectively the handover The target base station and the service peer base station. 2. The user handover method under the base station direct connection architecture according to claim 1, wherein the handover target base station or the service peer base station triggers the execution of the data transfer between the handover target base station and the service peer base station The process of establishing a direct channel includes: The handover target base station or the service peer base station sends judgment information to the management control center, and the judgment information includes the handover target base station identifier, the handover peer base station identifier, and the service identifier; When the management control center judges according to the judgment information that the number of base stations included in the first transmission path between the handover source base station and the service peer base station is greater than the handover destination base station and the service peer base station When the number of base stations included in the second transmission path between, the handover target base station or the service peer base station receives the establishment instruction returned by the management control center, and triggers the current data direct channel according to the establishment instruction A process is established, the establishment instruction includes the second transmission path. 3. The user switching method under the base station direct connection architecture according to claim 2, further comprising: The management control center triggers a data direct channel release process between the base stations in the non-duplicated part of the first transmission path and the second transmission path. 4. The user handover method under the base station direct connection architecture according to claim 1, wherein the handover source base station initiates a cell handover request to a corresponding handover destination base station comprising: The handover source base station sends a service request to the management control center, and the service request includes the handover source base station identifier, the cell handover request identifier, the handover destination base station identifier and/or the measurement report uploaded by the user, so that the management control center according to The service request determines a handover target base station, and determines a third transmission path according to the handover target base station; The handover source base station receives the connection establishment signaling sent by the management control center, so that the handover source base station and the handover destination base station establish a handover data direct channel according to the connection establishment signaling, and the connection establishment signal The order includes the address of the handover source base station, the address of the handover destination base station, and the third transmission path; The handover source base station sends the cell handover request to the handover target base station through the handover data direct channel. 5. The user handover method under the base station direct architecture according to claim 2 or 3, wherein the handover destination base station triggers establishment of the current data direct channel establishment process according to the establishment instruction comprising: The handover target base station initiates a data direct channel establishment request to the service peer base station according to the establishment instruction; When the handover destination base station receives the data direct channel establishment response returned by the service peer base station, it establishes the current data direct channel with the service peer base station. 6. The user handover method under the direct communication architecture of the base station according to claim 2 or 3, wherein the establishment of the current data direct channel establishment process triggered by the service peer base station according to the establishment instruction includes: When the service peer base station receives the establishment instruction, initiate a data direct channel establishment request to the handover destination base station according to the handover destination base station identifier in the establishment instruction; When the service peer base station receives the data direct channel establishment response returned by the handover target base station, it establishes the current data direct channel with the handover target base station. 7. The user handover method under the base station direct architecture according to claim 1, wherein the handover source base station recognizes that the user needs to handover the cell comprising: The handover source base station receives the measurement report reported by the user, and judges whether the user needs to hand over a cell according to the signal power and/or current geographic location information in the measurement report. 8. A user switching device under a base station direct connection architecture, characterized in that it comprises: Initiating a request module, configured to initiate a cell switching request to a corresponding switching target base station when it is recognized that the user needs to switch cells; A forwarding module, configured to receive a cell handover response returned by the handover destination base station, and forward it to the user, so as to instruct the user to release the wireless connection with the handover source base station, and establish a connection with the handover destination base station Wireless connections; A sending identification module, configured to send the identification of the service peer base station to the handover target base station when receiving the cell handover success response returned by the handover target base station, or send the handover target base station identity to the service peer base station so that the handover target base station or the service peer base station triggers the execution of the current data direct channel establishment process between the handover target base station and the service peer base station, and the two ends of the current data direct channel are respectively the Handover the target base station and the service peer base station. 9. The user switching device under the direct connection architecture of the base station according to claim 8, wherein the initiating request module comprises: The sending service request submodule is used to send a service request to the management control center when it is recognized that the user needs to switch cells, and the service request includes the handover source base station identifier, the cell handover request identifier, the handover destination base station identifier and/or the user uploaded measurement report, so that the management control center determines the handover target base station according to the service request, and determines the transmission path according to the handover target base station; The receiving connection establishment signaling submodule is configured to receive the connection establishment signaling sent by the management control center, so that the handover source base station and the handover destination base station establish a data direct channel according to the connection establishment signaling, so that The connection establishment signaling includes the address of the handover source base station, the address of the handover destination base station, and the transmission path; The submodule for sending a cell handover request is configured to send the cell handover request to the handover target base station through the handover data direct channel. 10. A handover target base station, characterized in that, comprising: A module for receiving a cell switching request, configured to receive a cell switching request sent by a switching source base station, and return a cell switching response to the switching source base station according to the cell switching request; The service peer base station identifier receiving module is used to receive the service peer base station identifier and send judgment information to the management control center, the judgment information including handover target base station identifier, handover peer base station identifier and service identifier. 11. The handover destination base station according to claim 10, further comprising: The first sending request module is configured to initiate a data direct channel establishment request to the service peer base station according to the establishment instruction issued by the management control center, and the establishment instruction includes the communication between the handover target base station and the service peer base station the second transmission path; The first establishing module is configured to, when receiving the data direct channel establishment response returned by the service peer base station, establish the current data direct channel between the handover destination base station and the service peer base station. 12. A service peer base station, characterized in that it comprises: The second sending request module is configured to, when receiving the establishment instruction, initiate a data direct channel establishment request to the handover destination base station according to the handover destination base station identifier in the establishment instruction, the establishment instruction including the handover purpose a second transmission path between the base station and the service counterpart base station; The second establishment module is configured to establish a current data direct channel with the handover target base station when receiving the data direct channel establishment response returned by the handover target base station. 13. A service data exchange system, characterized by comprising the user switching device under the base station direct connection architecture according to claim 8 or 9, the handover target base station according to claim 10 or 11, and the user switching device according to claim 12. The above-mentioned service peer base station.

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