WO2011022874A1

WO2011022874A1 - System and method for paging in flattened mobile communication system

Info

Publication number: WO2011022874A1
Application number: PCT/CN2009/073503
Authority: WO
Inventors: 王欣晖; 李靖
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-08-25
Filing date: 2009-08-25
Publication date: 2011-03-03

Abstract

The present invention discloses a system and a method for paging in a flattened mobile communication system, with the purpose of paging in a mobile communication system. The method includes: a core network sending a paging message to a part of the enhanced base stations in a same location area, and the part of the enhanced base stations forwarding the paging to a target cell directly, or the rest of the enhanced base stations in the location area forwarding the message to the target cell indirectly. The present invention implements paging in a flattened mobile communication system, and reduces greatly the signaling load on the A-interface of a core network after the mobile communication system is flattened.

Description

Paging system and method for flat mobile communication network

Technical field

The present invention relates to a flattened mobile communication network, and more particularly to a paging system and method for a flat mobile communication network.

Background technique

FIG. 1 is a schematic diagram of a network architecture and an interface of a conventional Global System for Mobile Communications (GSM) system. As shown in Figure 1, the traditional GSM system mainly includes three layers: the core network, the base station controller (BSC), and the base station (Base Transceiver Station, BTS). Wherein, one core network administers a plurality of base station controllers, and the base station control M and the base station controller N are shown in the figure; one base station controller administers a plurality of base stations, wherein the base station controller M administers the base stations M1 and the base stations M2, and the base station controls The N is controlled by the base station N1 and the base station N2; one base station further administers a plurality of mobile terminals (MSs). In the figure, one base station each administers an MS as an example, the base station M1 governs the mobile terminal Mi l , and the base station M2 governs the mobile terminal. M21, the base station N1 governs the mobile terminal N11 and the base station N2 governs the mobile terminal N211.

In the network architecture of the traditional GSM system, both the BSC and the BTS belong to the Base Station System (BSS). The interface between the core network and the BSC is called the A interface. The interface between the BSC and the BTS is called the Abis interface. The interface between the BTS and the MS is called the Um interface. The core network, BSC and BTS work together to provide complete mobile voice service capabilities to the MS.

2 is a schematic diagram of location area paging in a conventional GSM network. As shown in FIG. 2, the core network has a base station controller 1, a base station controller 2, and a base station controller 3, wherein the base station controller 1 has a base station 11, a base station 12, ... and a base station lm, a total of m base stations; The device 2 has a base station 21, ... and a base station 2n for a total of n base stations; the base station controller 3 has a base station 31... and a base station 3k for a total of k base stations. The base station 12 has a mobile terminal.

In the GSM network of the three-layer architecture, when the mobile terminal is used as the called voice service, the core network needs to page the mobile terminal in the idle mode to complete the establishment of the voice service. In general, the core network sends a paging message to the device through the A interface based on the location area information. For all BSCs in the same location area (ie, the base station controller 1, the base station controller 2, and the base station controller 3 in FIG. 2), the BSCs belonging to the same location area may be one or more. After receiving the paging message sent by the core network, the BSC sends the paging message to all the base stations it manages through the Abis interface. For example, the base station controller 1 sends the paging message to the base station 11, the base station 12, ... Base station lm. The base station 12 sends the paging message to the mobile terminal through the Um interface according to the processing of a certain paging group.

It can be seen that in the traditional GSM network of the three-layer architecture, for each mobile terminal as the called voice service, the number of paging messages that the A interface needs to transmit is equal to the number of all BSCs belonging to the same location area. In general, this number is limited, and the number of BSCs that generally belong to the same location area will not exceed 10. Therefore, the number of paging messages on the A interface generally does not have a very large load.

Figure 3 is a schematic diagram of an existing flat GSM network architecture and interface. As shown in FIG. 3, the existing flattened GSM network mainly includes two layers of a core network and an enhanced base station (eBTS), wherein an interface between the core network and the enhanced base station is an A interface, and the enhanced base station and the enhanced base station are The interface between the mobile terminals is a Um interface, and a new interface is defined between the enhanced base stations, which is called an enhanced inter-base station interface, and can be used for interaction between the enhanced base station and the enhanced base station. In the figure, each enhanced base station is shown by the enhanced base station 1, the enhanced base station 2, the enhanced base station 3, and the enhanced base station 4, and each mobile terminal is shown by the mobile terminal 11, the mobile terminal 21, the mobile terminal 31, and the mobile terminal 11. .

The core network and the enhanced base station work together to provide the complete mobile voice service function to the MS. With continued reference to FIG. 3, in the flattened GSM network, when the mobile terminal is used as the called voice service, the core network also sends the paging message to the eBTS belonging to the same location area through the A interface based on the location area information, eBTS Then, according to the processing of a certain paging group, the paging message is sent to the MS through the Um interface.

It can be seen that in the flat GSM network, for each mobile terminal as the called voice service, the number of paging messages that the A interface needs to transmit is equal to the number of all eBTSs belonging to the same location area. In general, the number of eBTSs can reach hundreds or even hundreds.

Therefore, after the network is flattened, the core network directly sends the paging message to the eBTS. Since the number of eBTSs in the same location area is much larger than the number of BSCs in the traditional network, the network is flat. After the flattening, the paging message that the core network needs to send will be greatly increased, resulting in an increase in the core network load.

Summary of the invention

The technical problem to be solved by the present invention is to provide a paging system and method for flattening a mobile communication network for flattening paging of a mobile communication network.

In order to solve the above technical problem, the present invention provides a paging method for a flat mobile communication network, which is used for a core network to send a paging message to a mobile terminal in a target cell by using an enhanced base station, where the method includes:

Sending, by the core network, the paging message to a part of the enhanced base station in the same location area, where the part of the enhanced base station directly forwards the paging message to the target cell, or passes through the location area The remaining enhanced base stations indirectly forward the paging message to the target cell.

Preferably, the step of the core network sending the paging message to the part of the enhanced base station includes:

The enhanced base station in the location area is divided into at least two layers, each layer includes at least one enhanced base station, and the core network sends the paging message to a first layer of the at least two layers of enhanced base stations Enhanced base station.

Preferably, the paging message is directly forwarded to the target cell by the part of the enhanced base station, or the paging message is indirectly forwarded to the target cell by using the remaining enhanced base stations in the location area, including :

When the target cell belongs to the first layer enhanced base station, the first layer enhanced base station directly forwards the paging message to the target cell;

When the target cell belongs to the remaining enhanced base stations, the first layer enhanced base station forwards the paging message by means of layer-by-layer forwarding to the layer-by-layer enhanced base stations in the at least two layers. To an enhanced base station that governs the target cell, the paging message is forwarded to the target cell by an enhanced base station that governs the target cell.

Preferably, the core network indicates that the paging message is a paging for the entire location area when the paging message is sent to the first layer enhanced base station; the first layer enhanced base station according to the Instructing to forward the paging message, and finally the remaining enhanced base stations in the location area receive the paging Message.

Preferably, the enhanced base station that receives the paging message is based on its own base station relationship with other or all of the enhanced base stations, or itself and other or all of the enhanced base stations. The base station affiliation relationship and the cell affiliation relationship between the base station and the cell under its jurisdiction, and forwarding the paging message.

Preferably, the paging message further includes a forwarding path, and the enhanced base station that receives the paging message forwards the paging message according to the forwarding path.

In order to solve the above technical problem, the present invention further provides a paging system for a flat mobile communication network, which is used for a core network to send a paging message to a mobile terminal in a target cell by using an enhanced base station, where the system includes a core network and Enhanced base station, where:

The core network is configured to send the paging message to a portion of the enhanced base station in the same location area;

The partially enhanced base station is configured to forward the paging message directly to the target cell, or to forward the paging message to the target cell indirectly through remaining enhanced base stations in the location area.

Preferably, the enhanced base station in the location area is set to at least two layers, each layer includes at least one enhanced base station, and the core network sends the paging message to the at least two layers of enhanced base stations. The first layer of enhanced base stations.

Preferably, the first layer enhanced base station is configured to:

When the target cell belongs to the first layer enhanced base station, the paging message is directly forwarded to the target cell;

When the target cell belongs to the remaining enhanced base stations, the paging message is forwarded to an enhanced type that governs the target cell by means of layer-by-layer forwarding to the next-level enhanced base station in the at least two layers. Base station.

Preferably, the core network is configured to indicate that the paging message is a paging for the entire location area when the paging message is sent to the first layer enhanced base station; the first layer enhanced type The base station is configured to forward the paging message according to the indication, and finally the remaining enhanced base stations in the location area receive the paging message. Preferably, the enhanced base station that receives the paging message records the base station affiliation relationship between itself and other part or all of the enhanced base stations, or records the base station between itself and other part or all of the enhanced base stations. The affiliation relationship and the community affiliation relationship between the affiliation and the cell under its jurisdiction, and configured to forward the paging message according to the affiliation relationship of the base station or the base station affiliation relationship and the affiliation relationship of the cell.

Preferably, the core network is configured to further indicate a forwarding path of the paging message when the paging message is sent; the enhanced base station receiving the paging message is configured to forward the paging according to the forwarding path Message.

Compared with the prior art, the core network of the flat mobile communication network in the technical solution of the present invention can send a paging message to a part of the eBTS in the location area, and forward the eBTS and the eBTS when performing paging in the location area. The forwarding capability enables the reception of paging messages by some or all cells in the location area, which greatly reduces the load of the core network A interface signaling after the flattening of the mobile communication network, and effectively reduces the core network A interface signaling. The amount of work. BRIEF abstract

Figure 1 is a schematic diagram of the architecture and interface of a conventional GSM network;

2 is a schematic diagram of paging in a location area in a conventional GSM network;

3 is a schematic diagram of a conventional flat GSM network architecture, interface, and location area paging; FIG. 4 is a schematic diagram of a network layered by eBTS in the same location area after the GSM network is flattened; FIG. 5 is a location area paging according to an embodiment of the present invention; Schematic diagram of the signaling process;

6 is a schematic flowchart of a first implementation manner of a second embodiment of the present invention;

7 is a schematic flowchart of a second implementation manner of a second embodiment of the present invention;

FIG. 8 is a schematic flowchart of a third implementation manner of a second embodiment of the present invention. Preferred embodiment of the invention

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and embodiments, thereby illustrating how the present invention can be applied to solve the technical problems, and the implementation of the technical effects can be fully understood. And according to the implementation.

It should be noted that, if not conflicting, the embodiments of the present invention and the various features of the embodiments may be combined with each other, and are all within the protection scope of the present invention. Additionally, the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although the logical order is illustrated in the flowchart, in some cases, may be different The steps shown or described are performed in the order herein.

In a flat mobile communication network, such as flattened GSM, when the core network initiates paging to the target cell, only the paging message is sent to a part of the eBTS (such as some or some eBTS) in the location area, and the paging is received. The eBTS of the message is forwarded to the target cell according to the defined paging propagation rule, or directly through the enhanced inter-base station interface between the eBTS and the eBTS, and the paging message is forwarded to the location area without directly receiving from the core network. Part or all of the remaining eBTSs of the paging message enable the target cell to receive the paging message. In this way, the target cell in which the MS is located can receive the paging message sent by the core network, and at the same time reduce the load of the paging message sent by the core network.

The eBTS receiving the paging message may forward the paging message to a part of the eBTS that does not receive the paging message directly from the core network, instead of all eBTSs that do not directly receive the paging message from the core network. Then, the eBTS that receives the forwarded paging message continues to forward the paging message to other eBTSs that do not receive the paging message directly from the core network. Of course, the eBTS that directly receives the paging message sent by the core network may also forward the paging message to all eBTSs that have not received the paging message sent by the core network. It should be noted that the eBTS that directly receives the paging message sent by the core network may also directly page to the target, for example, the target cell belongs to the eBTS that directly receives the paging message.

The flat mobile communication network, which includes a core network, a plurality of eBTSs belonging to the same location area, and a plurality of MSs, such as flattened GSM, is used in the present invention to transmit to a part of the eBTSs when the core network pages the MSs. a paging message; the eBTS receiving the paging message follows the defined paging propagation rule, or directly pages to the MS, or forwards the paging message to the remaining eBTSs in the location area through the enhanced inter-base station interface Or all, so that the target cell can finally receive the paging message.

Part or all of each enhanced base station records the base station affiliation relationship between itself and other part or all of the enhanced base stations. Or, some or all of the enhanced base stations are simultaneously recorded There is a base station affiliation relationship between itself and other part or all of the enhanced base stations, and the cell affiliation relationship between the cell and its own cell or the cell and itself and other part or all of the enhanced base stations.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The preferred embodiments described herein are intended to be illustrative only and not to limit the invention.

First embodiment

According to the embodiment of the present invention, a method for paging the entire location area is first provided, where the paging message is sent by the core network to one or several eBTSs in the location area where the MS is located, and then according to the defined paging propagation rule. Transmitting, by the one or several eBTSs, the paging message to the remaining eBTSs in the location area through the enhanced inter-base station interface between the eBTS and the eBTS; after forwarding the paging message between the eBTS and the eBTS, finally The eBTS of the entire location area can receive the paging message, and finally the paging message is forwarded by each eBTS to each cell under the jurisdiction of each eBTS.

Specifically, the eBTSs of the same location area in the network are divided into at least two layers, and each layer has at least one eBTS. The paging propagation rule is further defined to control the retransmission of the paging message between the enhanced inter-base station interfaces. As shown in the network structure diagram of the first embodiment shown in FIG. 4, all eBTSs in the location area are divided into three layers, wherein there are two eBTSs, 11 eBTSs, and 6 eBTSs. specifically:

6 Layer 2 eBTSs, such as Layer 2 eBTS1 l, Layer 2 eBTS12, Layer 2 eBTS13, Layer 2 eBTS14, Layer 2 eBTS 15 and Layer 2 eBTS16, define paging propagation rules to be attached to a layer of eBTS1; Layer 2 eBTS21, II 5 layers of eBTS, such as layer eBTS22, layer 2 eBTS23, layer 2 eBTS24, and layer 2 eBTS25, define a paging propagation rule to be attached to a layer of eBTS2;

Layer 3 eBTS131, defines the paging propagation rule to be attached to the - Layer 2 eBTS13;

The third layer eBTS151 defines a paging propagation rule to be attached to the second layer eBTSl 5;

Layer 3 eBTS161, defines the paging propagation rule to be attached to the - Layer 2 eBTS16;

The third layer eBTS211 defines the paging propagation rule to be attached to the second layer eBTS21;

Layer 3 eBTS221, defines the paging propagation rule to be attached to the - Layer 2 eBTS22;

The three-layer eBTS 251 defines a paging propagation rule to be attached to the - Layer 2 eBTS 25. It should be noted that each layer eBTS in the figure is replaced by a number of layers, for example, layer 1 represents a layer of eBTS1, layer 22 represents a layer 2 eBTS 22, and layer 3 represents a layer 3 eBTS 131.

When a certain MS in the location area needs to be paged, the core network sends a paging message to a layer of eBTS through the A interface. As shown in Figure 4, since there are two layers of eBTS (one layer eBTS1 and one layer eBTS2) in the location area, the core network needs to send paging messages to the two layer eBTSs. Preferably, the paging message may be accompanied by a page indicating that the paging is for the entire location area.

After receiving the paging message, the e-layer eBTS needs to send a paging request (Paging Request) message on the Um interface according to the prior art, and also needs to enhance the eBTS and the eBTS according to the defined paging propagation rule. The inter-base station interface forwards the paging (Paging) message to its attached Layer 2 eBTS, namely:

The eBTS1 layer needs to forward the paging message to its attached Layer 2 eBTS1, Layer 2 eBTS12, Layer 2 eBTS13, Layer 2 eBTS14, Layer 2 eBTS15 and Layer 2 eBTS16;

The layer eBTS2 needs to forward the paging message to its attached Layer 2 eBTS21, Layer 2 eBTS22, Layer 2 eBTS23, Layer 2 eBTS24 and Layer 2 eBTS25.

After receiving the paging message, the Layer 2 eBTS needs to send a paging request (Paging Request) message on the Um interface according to the prior art, and also needs to enhance the eBTS and the eBTS according to the defined paging propagation rule. The inter-base station interface forwards the paging (Paging) message to its attached Layer 3 eBTS, namely:

The Layer 2 eBTS13 needs to forward the paging message to its attached Layer 3 eBTS131;

The Layer 2 eBTS 15 needs to forward the paging message to its attached Layer 3 eBTS 151;

The Layer 2 eBTS16 needs to forward the paging message to its attached Layer 3 eBTS161;

The Layer 2 eBTS21 needs to forward the paging message to its attached Layer 3 eBTS211;

The Layer 2 eBTS22 needs to forward the paging message to its attached Layer 3 eBTS221;

The Layer 2 eBTS 25 needs to forward the paging message to its attached Layer 3 eBTS 251.

After receiving the paging message, the Layer 3 eBTS needs to send a Paging Request message on the Um port according to the technical requirements. After the three-layer eBTS receives the paging message, all eBTSs in the location area have received the paging message. It should be noted that, after receiving the paging message, each layer of the eBTS forwards the paging message to the next layer (if the eBTS has the next layer of eBTS), The paging message is also broadcast to each cell under its jurisdiction.

FIG. 5 is a schematic diagram of a paging procedure for a certain location area in a flattened GSM system according to an embodiment of the present invention. As shown in FIG. 5, the paging process mainly includes the following steps:

Step S510: The core network sends a paging (Paging) message to the layer eBTS through the A interface, and notifies the layer eBTS that paging in the location area is required;

Step S520, the layer eBTS sends a paging request (Paging Request) message on the Um port according to the prior art requirement, and then attaches to the attached inter-base station interface between the eBTS and the eBTS according to the defined paging propagation rule. The Layer 2 eBTS sends a paging message to notify the Layer 2 eBTS that paging of the location area is required;

Step S530: The Layer 2 eBTS sends a paging request on the Um interface according to the prior art requirements.

Request, message, according to the defined paging propagation rule, send a paging message to the attached three-layer eBTS through the enhanced base station and interface between the eBTS and the eBTS, and notify the three-layer eBTS to perform paging in the location area. By this layer forwarding, all eBTSs end up receiving paging messages.

Second embodiment

As can be seen from the description in the first embodiment, the first embodiment is applied to the paging of the location area, but the present invention is not limited thereto. For paging for individual cells, it can also be achieved by the idea of the invention. For the paging of the location area, the core network is for all the cells in the jurisdiction, and all the cells are the target cells; for the paging of the individual cells, the core network implements the eBTS to which the individual cell belongs. Paging of individual cells, at which point the individual cell is the target cell.

Specifically, the eBTS of the same location area is divided into at least two layers in the network, and each layer has at least one eBTS. A paging propagation rule is defined to control the forwarding behavior of paging messages between enhanced base station interfaces. For example, the eBTS layering diagram shown in FIG. 4 is used as an example. According to the specific implementation process of paging propagation, the embodiment may have at least two implementation manners as follows.

First implementation

A layer of eBTS records the attached Layer 2 eBTS identification information attached to these Layer 2 eBTSs. The three-layer eBTS identification information and the base station affiliation of these two-layer and three-layer eBTSs, that is, one layer eBTS clearly knows which two-layer eBTSs are attached to the eBTS, and which three-layer eBTSs are attached to these two-layer eBTSs, and The eBTS records the identification number of the cells under the jurisdiction of the two-layer and three-layer eBTS and the identification number of the cell under its jurisdiction, and also records the community relationship of each cell to the eBTS;

The Layer 2 eBTS records the attached Layer 3 eBTS identification information and the base station affiliation of the Layer 3 eBTSs attached to the Layer 2 eBTS, that is, the Layer 2 eBTS clearly knows which Layer 3 eBTSs are attached to the Layer 2 eBTS and records There are identification numbers of the cells under the jurisdiction of the three-layer eBTS, and the community relationship of the cells under the jurisdiction of the three-layer eBTS.

When the core network pages the target cell under the location area, the paging message can be sent to the target cell by using the above paging propagation rule. As shown in FIG. 6, the general process of the first implementation mainly includes the following steps:

Step S610, when the paging message needs to be sent to the target cell in the location area, the core network sends a paging (Paging) message to the layer eBTS through the A interface;

As shown in FIG. 4, since there are two layers of eBTS (-layer eBTS1 and one layer eBTS2) in the location area, the core network needs to send a paging message to the two layer eBTSs; preferably, the paging message There may be an indication information indicating that the paging is for paging of the entire location area;

Step S620, after receiving the paging message, the layer eBTS determines whether the target cell belongs to the cell under its jurisdiction, and if yes, proceeds to step S625, otherwise proceeds to step S626;

Step S625, the layer eBTS sends a paging message on the Um interface of the target cell, and stops forwarding the paging message to another eBTS, and the process ends;

Step S626, the layer eBTS further determines whether the target cell belongs to an eBTS to which it belongs, and if yes, proceeds to step S630, otherwise proceeds to step S640;

It should be noted that the subsidiary eBTS herein includes a layer 2 eBTS attached to the eBTS and a layer 3 eBTS attached to the layer 2 _e BTS thereof;

Step S630, the layer eBTS further determines whether the target cell belongs to a certain second layer eBTS attached thereto, if yes, go to step S635, otherwise go to step S636; Step S635, the layer eBTS forwards the paging message to the layer 2 eBTS, and the process goes to step S650. Step S636, the layer eBTS forwards the paging message to the other layer 2 eBTS attached to the layer 3 eBTS. Step S650;

Step S640, the layer eBTS stops forwarding the paging message to another eBTS, and does not perform any processing, and the process ends;

Step S650, after receiving the paging message, the layer 2 eBTS attached to the layer eBTS determines whether the target cell belongs to the cell under its jurisdiction, if yes, go to step S655, otherwise go to step S656; step S655, the second layer eBTS is The Um interface of the target cell sends a paging message, and stops forwarding the paging message to another eBTS, and the process ends;

Step S656, the Layer 2 eBTS searches for the eBTS in which the target cell is located in the attached Layer 3 eBTS, and sends the paging message to the Layer 3 eBTS, and proceeds to Step S660;

Step S660: After receiving the paging message, the Layer 3 eBTS attached to the Layer 2 eBTS sends the paging message to the Um interface of the target cell, and the process ends.

The foregoing step S620 to step S640 are a process of a layer of eBTS; the above steps S650 to S656 are processes of the layer 2 eBTS; and the above step S660 is a process of the layer 3 eBTS.

The first implementation manner is that the core network is configured for the paging of the cell of the three-layer eBTS 131. The first implementation manner is mainly performed by the foregoing steps S610, S620, S626, S630, S636, S650, S656, and steps. S660. Finally, the Layer 3 eBTS 131 sends the paging message to the Um interface of the target cell to complete paging to the target cell.

Second implementation

The layer eBTS records the attached layer 2 eBTS identification information and the base station affiliation of the layer 2 eBTSs attached to the layer eBTS, that is, it is clearly known which layer 2 eBTSs are attached to the eBTS, but the layer 2 is not recorded. The base station relationship between the three layers of eBTSs, that is, it does not know which three layers of eBTS are attached to these two layers of eBTS, and the layer eBTS does not record the identification numbers of the cells of the two layers and three layers of eBTS, and there is no record. The subordinate relationship between the layer and the three-layer eBTS jurisdiction;

The second layer eBTS records the attached three layers of eBTS identification information and the three layers of eBTS are attached to the The base station relationship of the Layer 2 eBTS, that is, it is clear that there are three Layer 3 eBTSs attached to the Layer 2 eBTS, but the Layer 2 eBTS does not record the identification numbers of the cells under the jurisdiction of the Layer 3 eBTS, and the Layer 3 eBTS is not recorded. The jurisdiction of the community under the jurisdiction of the jurisdiction.

When the core network pages the target cell under the location area, the paging message can be sent to the target cell by using the above paging propagation rule. As shown in FIG. 7, the general process of the second implementation mainly includes the following steps:

Step S710, the core network sends a paging (Paging) message to a layer of eBTS through the A interface. As shown in FIG. 4, since there are two layers of eBTS (-layer eBTS1 and one layer eBTS2) in the location area, the core The network needs to send a paging message to the two layer eBTSs. Preferably, the paging message may be provided with an indication information, where the indication information is used to indicate that the paging is for paging of the entire location area;

Step S720, after receiving the paging message, the layer eBTS determines whether the target cell belongs to the cell under its jurisdiction, if yes, go to step S725, otherwise go to step S726;

Step S725, the layer eBTS sends the paging message on the Um interface of the target cell, and stops forwarding the paging message to another eBTS, and the process ends;

Step S726, the layer eBTS forwards the paging message to its affiliate layer 2 eBTS, and the process goes to step S730. Step S730, the layer 2 eBTS attached to the layer eBTS determines whether the target cell belongs to the target cell after receiving the paging message. If the cell is in its own jurisdiction, go to step S735, otherwise go to step S736;

Step S735, the Layer 2 eBTS sends a paging message on the Um interface of the target cell, and stops forwarding the paging message to another eBTS, and the process ends;

Step S736, the Layer 2 eBTS forwards the paging message to its affiliated Layer 3 eBTS, and proceeds to step S740.

Step S740: After receiving the paging message, the Layer 3 eBTS attached to the Layer 2 eBTS determines whether the target cell belongs to the cell under its jurisdiction, and then proceeds to step S745; otherwise, no processing is performed, and the process ends;

Step S745: The Layer 3 eBTS sends a paging message on the Um interface of the target cell, and the process ends.

The above steps S720 to S726 are the processing of one layer of eBTS; the above steps S730 to S736 are processes of the two-layer eBTS; the above steps S740 to S745 are processes of the three-layer eBTS.

The second implementation manner is that the core network is configured for the paging of the cell of the three-layer eBTS 131. The second implementation manner is mainly implemented by the foregoing steps S710, S720, S726, S736, S740, and S745. The eBTS 131 sends the paging message on the Um interface of the target cell to complete paging to the target cell.

Third implementation

The layer eBTS records the attached Layer 2 eBTS identification information, the Layer 3 eBTS identification information attached to the Layer 2 eBTSs, and the base station affiliation relationship of the Layer 2 and Layer 3 eBTSs, that is, the layer eBTS clearly knows which two The layer eBTS is attached to the eBTS, and the three layer eBTSs are attached to the layer 2 eBTSs, and the layer eBTS records the identification numbers of the cells of the layer 2 and layer 3 eBTS and the cell affiliation relationship of each cell to the eBTS;

The Layer 2 eBTS records the attached Layer 3 eBTS identification information and the base station affiliation of the Layer 3 eBTSs attached to the Layer 2 eBTS. That is, the Layer 2 eBTS clearly knows which Layer 3 eBTSs are attached to the eBTS, but the Layer 2 The eBTS does not record the identification number of the cell under the jurisdiction of the three-layer eBTS and the cell affiliation of the cell under the jurisdiction of the three-layer eBTS.

When the core network pages the target cell under the location area, the paging message can be sent to the target cell by using the above paging propagation rule. As shown in FIG. 8, the general process of the third implementation mainly includes the following steps:

Step S810, when the paging message needs to be sent to the target cell in the location area, the core network sends a paging message to the eBTS through the A interface.

Step S820, after receiving the paging message, the layer eBTS determines whether the target cell belongs to the cell under its jurisdiction, if yes, go to step S825, otherwise go to step S826;

Step S825, the layer eBTS sends a paging message on the Um port of the target cell, and stops. Forwarding the paging message to another eBTS, the process ends;

Step S826, the layer eBTS further determines whether the target cell belongs to an eBTS to which it belongs, if yes, go to step S830, otherwise go to step S840;

It should be noted that the subsidiary eBTS herein includes a layer 2 eBTS attached to the eBTS and a layer 3 eBTS attached to the layer 2 eBTS;

Step S830, the layer eBTS further determines whether the target cell belongs to a certain second layer eBTS attached thereto, if yes, go to step S835, otherwise go to step S836;

Step S835, the layer eBTS forwards the paging message to the layer 2 eBTS, and the process goes to step S850. Step S836, the layer eBTS forwards the paging message to other layer 2 eBTSs attached to the layer 3 eBTS, and Passing an indication that the other Layer 2 eBTS needs to forward the paging message to the designated Layer 3 eBTS, and then go to Step S855;

Step S840, the layer eBTS stops forwarding the paging message to another eBTS, and does not perform any processing, and the process ends;

Step S850, after receiving the paging message, the layer 2 eBTS sends a paging message on the Um interface of the target cell, and the process ends;

Step S855, the Layer 2 eBTS sends the paging message to the Layer 3 eBTS specified by the eBTS according to the indication information of the paging message of the layer eBTS, and then proceeds to step S860;

Step S860: After receiving the paging message, the designated Layer 3 eBTS sends a paging message to the Um port of the target cell, and the process ends.

The above steps S820 to S840 are the processing of one layer eBTS; the above steps

S850 to S855 are processes of the second layer eBTS; the above step S860 is a process of the three layer eBTS.

The third implementation manner is that the core network is configured for the paging of the cell of the three-layer eBTS 131, and the third implementation manner is mainly performed by the foregoing steps S810, S820, S826, S830, S836, S850, and S860. The Layer 3 eBTS 131 sends the paging message to the Um interface of the target cell to complete paging to the target cell. In combination with the foregoing method embodiments, the paging system of the flat mobile communication network provided by the present invention mainly includes a core network and an enhanced base station, where:

The core network is configured to send a paging message to a partially enhanced base station in the same location area; the partially enhanced base station is configured to forward the paging message directly to the target cell, or to set the paging through the remaining enhanced base stations in the location area The message is forwarded indirectly to the destination message.

The enhanced base station in the location area is set to at least two layers, each layer includes at least one enhanced base station, and the core network sends a paging message to the first layer enhanced base station of the at least two layers of enhanced base stations.

Wherein, the first layer enhanced base station is set to:

When the target cell belongs to the first layer enhanced base station, the paging message is directly forwarded to the target cell; when the target cell belongs to the remaining enhanced base stations, the layer-by-layer forwarding manner is performed to the enhanced base stations in the at least two layers. The paging message is forwarded to the enhanced base station that governs the target cell.

Wherein, the core network is configured to indicate that the paging message is a paging for the entire location area when the paging message is sent to the first layer enhanced base station; the first layer enhanced base station is configured to forward the paging message according to the indication, and the final location area The remaining enhanced base stations receive paging messages.

The enhanced base station that receives the paging message records the base station affiliation relationship between itself and other part or all of the enhanced base stations, or records the base station affiliation relationship between itself and other part or all of the enhanced base stations. And the cell affiliation relationship between itself and the cell under the jurisdiction, and is configured to forward the paging message according to the affiliation relationship of the base station, or the base station affiliation relationship and the affiliation relationship of the cell.

The core network is configured to further indicate a forwarding path of the paging message when the paging message is sent; and the enhanced base station that receives the paging message is configured to forward the paging message according to the forwarding path.

It is to be understood that various changes can be made in the function and arrangement of the elements or modules without departing from the spirit and scope of the invention.

For example, as an implementation manner, the eBTS in the same location area in the foregoing implementation column may be divided into 4 layers or more layers, and the eBTS can still be forwarded through the layer to the next layer of paging messages. Received a paging message.

While the embodiments of the present invention have been described above, the described embodiments are merely for the purpose of understanding the invention and are not intended to limit the invention. Any of the technical fields to which the present invention pertains A person skilled in the art can make any modifications and changes in form and detail without departing from the spirit and scope of the invention, but the scope of the invention must still be attached. The scope defined in the request shall prevail. Industrial applicability

In summary, by means of the foregoing technical solution provided by the embodiment of the present invention, when paging in a location area, a paging message may be sent to a part of the eBTS in the location area through the core network, and then the paging message is forwarded between the eBTS and the eBTS. , all the cells in the location area can receive the purpose of paging messages. In addition, paging of a partial cell may also be implemented directly through the part of the eBTS, or the part of the eBTS and the remaining part or all of the eBTSs in the same location area. Compared with the prior art, the technical solution provided by the present invention can greatly reduce the load of the core network A interface signaling caused by the flattening of the mobile communication network, and effectively reduce the workload of the core network A interface signaling. .

Claims

Claim

A paging method for a flattened mobile communication network, configured for a core network to send a paging message to a mobile terminal in a target cell by using an enhanced base station, the method comprising:

2. The method of claim 1, wherein the step of the core network transmitting the paging message to the partially enhanced base station comprises:

3. The method according to claim 2, wherein the paging message is directly forwarded by the partially enhanced base station to the target cell, or the paging is performed by remaining enhanced base stations in the location area The message is forwarded to the target cell indirectly, including:

4. The method of claim 2, wherein:

When the core network sends the paging message to the first layer enhanced base station, the paging message is indicated as paging for the entire location area;

The first layer enhanced base station forwards the paging message according to the indication, and finally the remaining enhanced base stations in the location area receive the paging message.

5. The method of claim 3 or 4, wherein the enhanced base of the paging message is received The station, according to its own recorded base station relationship with some or all of the enhanced base stations, or its own recorded base station relationship with other or all of the enhanced base stations and its own and the jurisdiction of the jurisdiction The inter-substitution relationship forwards the paging message.

The method according to claim 3 or 4, wherein the paging message further comprises a forwarding path, and the enhanced base station receiving the paging message forwards the paging message according to the forwarding path.

A paging system for a flat mobile communication network, configured for a core network to send a paging message to a mobile terminal in a target cell by using an enhanced base station, the system comprising a core network and an enhanced base station, wherein:

8. The system according to claim 7, wherein the enhanced base station in the location area is set to at least two layers, each layer includes at least one enhanced base station, and the core network sends the paging message to A first layer enhanced base station of the at least two layers of enhanced base stations.

The system according to claim 8, wherein the first layer enhanced base station is configured to: when the target cell belongs to the first layer enhanced base station, forward the paging message directly to the Target cell

10. The system of claim 8 wherein:

The core network is configured to indicate that the paging message is a page for the entire location area when the paging message is sent to the first layer enhanced base station; The first layer enhanced base station is configured to forward the paging message according to the indication, and finally the remaining enhanced base stations in the location area receive the paging message.

11. The system of claim 9 or 10, wherein:

The enhanced base station receiving the paging message records the base station affiliation relationship between itself and other part or all of the enhanced base stations, or records the base station affiliation relationship between itself and other part or all of the enhanced base stations. And the cell affiliation relationship between the self and the cell under the jurisdiction, and is configured to forward the paging message according to the base station affiliation relationship, or the base station affiliation relationship and the cell affiliation relationship.

12. The system of claim 9 or 10, wherein:

The core network is configured to further indicate a forwarding path of the paging message when the paging message is sent;

The enhanced base station receiving the paging message is arranged to forward the paging message in accordance with the forwarding path.