CN100382545C - System and method for realizing dual-mode terminal simultaneously receiving dual-network messages - Google Patents

Abstract

The invention discloses a system for realizing dual-mode terminals simultaneously receiving dual-network messages, which is applied in cdma2000 1x and HRPD dual-mode systems, and connects MSC and 1x BSS/PCF of cdma2000 1x system with AN/PCF of HRPD system, AN/PCF is used to forward messages between MSC and 1x BSS/PCF. When a 1x/DO dual-mode terminal resides in the cdma2000 1x system, AN/PCF sends the message to the dual-mode terminal to 1x BSS/PCF , the 1x BSS/PCF adds the HRPD system identifier to the received message and sends it to the dual-mode terminal; when the 1x/DO dual-mode terminal resides in the HRPD system, the MSC sends the message to the dual-mode terminal to the AN /PCF, AN/PCF sends the received message to the dual-mode terminal after adding the cdma2000 1x system identifier. At the same time, the invention also discloses a method for realizing dual-mode terminal receiving dual-network messages at the same time. The method can reduce the frequent switching and searching of the terminal between two networks of different frequency points, save battery power consumption and network searching time of the terminal, and reduce the impact on users with high real-time requirements.

Description

System and method for realizing dual-mode terminal simultaneously receiving dual-network messages

technical field

The present invention relates to the technical field of communication, and in particular refers to a system and a method for realizing dual-mode terminals simultaneously receiving dual-network messages in a dual-mode network having a cdma2000 1x system and a high-speed packet data service (HRPD) system.

Background technique

The cdma2000 series includes four standard phases: IS95, cdma2000 1x, HRPD, and 1xEV-DV. Among them, the cdma2000 1x network can realize voice services and data services in the circuit domain, and the HRPD network is a pure packet data network. Therefore, in practical applications, the HRPD network is used in conjunction with the cdma2000 1x network, and the HRPD network can transmit relatively high-speed packet data services. As a supplement to cdma2000 1x data services, it provides users with better voice and data services.

For the sake of convenience, cdma2000 1x is referred to as 1x, and HRPD is referred to as DO.

According to the 3GPP2 standard, when an operator builds a 1x network and a DO network, the base station controllers of the two systems must be connected to the PDSN link, and the networking structure of the 1x system and the DO system are relatively independent. There is no other interface to the same PDSN. For an operator with an existing 1x network, when adding a new DO network, it is necessary to re-lease a physical link from the access network (AN)/packet control function (PCF) to the packet data serving node (PDSN). Provides packet data services.

However, in actual operation, since the 1x network and the DO network are established on different frequency points, when the dual-mode terminal (MS/AT) resides on the DO network, it cannot receive paging from the 1x network. In order to receive paging from the 1x network when the MS/AT is performing data services on the DO network, it must frequently switch to the 1x network and actively listen to 1x system messages and paging messages. MS/AT frequently switches and searches between the two networks, causing MS/AT to consume a lot of power.

Figure 1 is a schematic diagram of the connection between the 1x system and the DO system. Referring to Figure 1, the dotted box on the left is the 1x system, and the dotted box on the right is the DO system. 1x system includes Home Location Register (HLR) Mobile Switching Center (MSC) and 1x Base Station Control Subsystem (BSS)/PCF, DO network includes AN/PCF and Access Network Authentication, Authorization and Accounting (AN AAA), where, HLR is connected to MSC, MSC is connected to 1XBSS/PCF, AN/PCF is connected to AN AAA, and 1x BSS/PCF and AN/PCF are connected to PDSN at the same time.

Based on the above network structure, both the 1x network and the DO network can provide packet data services when the 1x network and the DO network are superimposed and operated. For a 1x/DO dual-mode terminal MS/AT with only one set of transmitting and receiving devices, when the MS/AT resides in the 1x network and the 1x network provides packet data services for it, the PPP service is terminated by the PDSN to the MS/AT , the PPP connection on the network side is established between the PDSN and the MS/AT through the 1x network. When the MS/AT provides packet data services through the DO network, the PPP connection on the network side is established between the PDSN and the MS/AT through the DO network. If data services are switched between the two networks, the PDSN needs to switch the PPP connection Switch to the new service network together. Therefore, when the MS/AT resides on the DO network, the 1x network sends the paging of the MS/AT. Since the 1x network and the DO network are established on different frequency points, the MS/AT must be switched to the 1x network regularly. To answer pages from the 1x network.

To sum up, in the prior art, since the 1x network and the DO network are established on different frequency points, in the case of superimposed operation of the 1x network and the DO network, in order for the MS/AT to perform packet data services on the DO network When receiving paging from 1x, it must frequently switch to the 1x network and actively answer 1x system messages and paging messages. Therefore, MS/AT needs to switch frequently between the two networks to search, MS/AT The power consumption is very large, and it also has a relatively large impact on some data services with high real-time requirements.

Contents of the invention

In view of this, the purpose of the present invention is to provide a system for dual-mode terminals to receive dual-network messages at the same time, so that when a dual-mode terminal with a set of receiving devices is in a 1x/DO dual-mode network superposition area, regardless of whether it resides in a 1x network Or which network in the DO network can receive information from another network.

Another object of the present invention is to provide a method for a dual-mode terminal to receive dual-network messages at the same time, so that when a dual-mode terminal with a set of receiving devices is in a 1x/DO dual-mode network superposition area, no matter whether it resides in a 1x network or a DO Any network in the network can receive information from another network.

A dual-mode terminal system provided by the present invention simultaneously receives dual-network messages, which is used in a cdma20001x and HRPD dual-mode system. The cdma20001x system includes at least MSC and 1x BSS/PCF, and the MSC and 1x BSS/PCF are connected with AN /PCF is connected, and AN/PCF is used to forward messages between MSC and 1xBSS/PCF;

If the 1x/DO dual-mode terminal resides in the cdma2000 1x system, the HRPD system will send the message to the dual-mode terminal to the cdma2000 1x system, and the cdma2000 1x system will add the HRPD system identifier to the received message and send it to the dual-mode terminal terminal;

If the 1x/DO dual-mode terminal resides in the HRPD system, the cdma2000 1x system will send the message to the dual-mode terminal to the HRPD system, and the HRPD system will add the cdma2000 1x system identifier to the received message and send it to the dual-mode terminal .

The MSC and 1x BSS/PCF in the cdma2000 1x system are connected to the AN/PCF in the HRPD system through interfaces for transmitting data and signaling respectively,

And the 1x BSS/PCF and AN/PCF are connected through a signaling interface for carrying paging messages and system messages between the 1x BSS/PCF and AN/PCF.

The MSC and 1x BSS/PCF in the cdma2000 1x system are respectively connected to the AN/PCF in the HRPD system through a signaling interface,

The MSC is connected with 1x BSS/PCF through a data interface,

The 1x BSS/PCF and AN/PCF are connected through an interface for carrying paging messages and system messages between the 1x BSS/PCF and AN/PCF.

A method for a dual-mode terminal to simultaneously receive dual-network messages provided by the present invention is applied in a cdma2000 1x and HRPD dual-mode system, the cdma2000 1x system includes at least MSC, 1x BSS/PCF, and the HRPD system includes at least AN/ PCF, the method is implemented like this:

The MSC forwards the message to be sent to the 1xBSS/PCF of the cdma2000 1x system through the AN/PCF of the HRPD system;

When the 1x/DO dual-mode terminal resides in the cdma2000 1x system, the AN/PCF in the HRPD system will send the message to the dual-mode terminal to the 1x BSS/PCF, and the 1x BSS/PCF will add the received message to the HRPD system After identification, send it to the dual-mode terminal;

When the 1x/DO dual-mode terminal resides in the HRPD system, the cdma2000 1x system sends the message to the dual-mode terminal to the AN/PCF of the HRPD system, and the AN/PCF adds the cdma2000 1x system identifier to the received message, sent to the dual-mode terminal.

When the 1x/DO dual-mode terminal resides in the HRPD system, it is characterized in that the cdma2000 1x system sends the message to the dual-mode terminal to the AN/PCF of the HRPD system: 1xBSS/PCF judges the message from the MSC Whether there is a system message or a paging message in , if yes, send the system message and paging message to the AN/PCF, otherwise, end.

When the 1x/DO dual-mode terminal resides in the HRPD system, it is characterized in that the cdma2000 1x system sends the message to the dual-mode terminal to the AN/PCF of the HRPD system: AN/PCF intercepts the transparent transmission Whether there is a system message and a paging message in the message, if yes, directly obtain the system message and a paging message, otherwise, end.

The interception includes:

b1. The physical layer in the AN/PCF copies the transparently transmitted message, and sends the copy to the MTP layer;

b2. The MTP layer submits the UDT message to BSMAP through SCCP;

After b3, BSMAP receives the message, decode the message, and judge whether the message is a paging message, if so, then perform step b4; if not, then discard the message and jump out of this process;

b4. Determine whether the dual-mode terminal has established a connection in the AN/PCF, if not, the AN/PCF discards the paging message; if there is a connection, the AN/PCF sends a paging message to the MS/AT, and points out the paging message It is from the cdma2000 1x network and the Service Option of MSC paging.

The present invention connects the cdma2000 1x system with the HRPD system. In the case of 1x/DO dual-network overlay coverage, the 1x/DO dual-mode terminal only needs to reside on one network, and the system message or paging message from another network, etc. The content can be sent to the dual-mode terminal through the current resident network, thereby reducing the frequent switching and searching of the dual-mode terminal between two networks with different frequency points, and switching to another network only when necessary, thereby saving It reduces the battery power consumption of the terminal, saves the time for the terminal to search the network, and reduces the impact on users with high real-time requirements.

Description of drawings

FIG. 1 is a schematic diagram of a network structure of a 1x network and a DO network in the prior art;

Fig. 2 is a schematic diagram of the network structure for realizing the system of the present invention;

Fig. 3 is a schematic diagram of the network structure for realizing the system of the present invention;

FIG. 4 is a schematic diagram of a protocol stack supported by AN/PCF;

Fig. 5 is a schematic diagram of A1 interface in AN/PCF transparent transmission;

FIG. 6 is a schematic diagram of transparent transmission of the A2 interface in the AN/PCF.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

The present invention connects the 1x network and the DO network. When the dual-mode terminal resides in one of the networks (the first system), the other network (the second system) will send the system message to the first network, and the first network will add the received message to the second network's ID, and send the message to the corresponding dual-mode terminal according to the format of the first network. If the first system is a 1x network, the second system is a DO network, and if the first system is a DO network, the second system is a 1x network.

In specific applications, two networking modes can be used. The first networking method is: reserve the A1/A2 interface of 1xBSS/PCF and MSC, and set the A1/A2 interface on AN/PCF, both 1xBSS/PCF and MSC communicate with AN/PCF through A1/A2 interface The AN/PCF completes the transparent transmission between the 1x BSS/PCF and the MSC through the A1/A2 interface. The second networking mode is: BSS and MSC are connected through A2 interface, A1 interface is set on AN/PCF, BSS and MSC are connected with AN/PCF through A1 respectively.

The two networking modes will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 2, in the first networking mode, the MSC is connected to the AN/PCF in the DO network through the A1/A2 interface, and the 1x BSS/PCF in the 1x network is connected to the AN/PCF through the k interface and the T interface . Here, the k interface is used to transmit standard A1/A2 interface messages. The T interface is used to carry paging messages and system messages from the DO network to the 1x network.

In this networking structure, the messages transmitted between the MSC in the 1x system and the 1x BSS/PCF are transparently transmitted through the AN/PCF in the DO network. In detail, MSC sends the message that needs to be sent to 1xBSS/PCF to AN/PCF in DO network through A1/A2 interface. After AN/PCF receives the message from MSC, it transparently transmits the message to 1xBSS/PCF through k interface The 1x BSS/PCF of the system; after receiving the message, the 1x BSS/PCF will process it according to the original process. When the 1xBSS/PCF in the 1x network has a message to be sent to the MSC, the 1x BSS/PCF transmits the message to the AN/PCF through the k interface, and the AN/PCF transparently transmits the message to the MSC through the A1/A2 interface. MSC then proceeds with the original process.

Based on the first networking structure, when the dual-mode terminal MS/AT resides in the DO network, or is receiving packet data from the DO network, if the 1x BSS/PCF in the 1x network receives AN/PCF transparent transmission 1x BSS/PCF transparently transmits the paging message or system message to be sent to the MS/AT to the AN through the k interface /PCF, the AN/PCF sends the paging message or system message to the MS/AT after adding the identifier of the 1x network.

Of course, when AN/PCF transparently transmits messages between MSC and 1x BSS/PCF, it can also monitor whether there are paging messages and system messages sent to the MS/AT in the transparently transmitted messages. Send the paging message and system message to the MS/AT with the identifier of the 1x network added.

When the MS/AT resides in the 1x network or the 1x network provides services for the terminal, the system message and paging message collected from the DO network need to be sent to the terminal, and the DO network can transmit the system message and paging message through the T interface. The call message is sent to the 1x BSS/PCF in the 1x network, and the BSS/PCF adds the identifier of the DO network to the message and sends it to the MS/AT.

As shown in Figure 3, in the second networking mode, the MSC is connected to the 1x BSS/PCF in the 1x network through the A2 interface, the MSC is connected to the AN/PCF in the DO network through the A1 interface, and the 1x BSS/PCF in the 1x network 1x BSS/PCF is connected to AN/PCF through k(A1) interface.

In this networking mode, MSC and 1x BSS/PCF transmit data through A1 interface, MSC sends signaling to AN/PCF through A2 interface, and AN/PCF transparently transmits the received signaling through K(A1) interface 1x BSS/PCF.

In the 1x network, the MSC sends the message that needs to be sent to the 1x BSS/PCF to the AN/PCF through the k(A1) interface, and the AN/PCF transparently transmits it to the 1x BSS/PCF through the A1 interface. 1x BSS/PCF is processed according to the original processing flow. Conversely, messages from 1x BSS/PCF to MSC are also forwarded by AN/PCF.

When the dual-mode terminal MS/AT resides in the DO network, or is receiving packet data from the DO network, the system message or paging message from the 1x network needs to be sent to the MS/AT, and the MSC passes k(A1) The interface sends it to the AN/PCF, and the AN/PCF transparently transmits it to the 1x BSS/PCF through the A1 interface, and the 1x BSS/PCF determines whether there is a paging to be sent to the dual-mode terminal residing in the DO network If there is a message or system message, then the 1x paging message or system message is sent to the AN/PCF through the T interface, and then the AN/PCF adds the system message and paging message to the 1x network paging instruction, and sends For dual-mode terminal MS/AT.

Of course, during the process of AN/PCF forwarding messages from MSC to 1x BSS/PCF, AN/PCF can also listen to whether there are paging messages and system messages, and if so, can send paging messages or system messages directly To the MS/AT in the current DO network.

Moreover, when the MS/AT resides in the 1x network or is served by the 1x network, the system message and paging message from the DO network need to be sent to the MS/AT, and the AN/PCF in the DO network can The system message and paging message are transmitted to the 1x BSS/PCF through the T interface first, and then the 1x BSS/PCF adds a DO system message or paging message indication to the system message or paging message, and follows the 1x system message or paging message The message format is reassembled and sent to MS/AT through 1x network.

The following describes in detail how the AN/PCF implements transparent transmission.

Here, the AN/PCF needs to support the transport layer protocol stack of the A1 interface to ensure that it can be connected with the MSCBSS on the A1 interface. In addition, AN/PCF also supports a simplified BSMAP protocol for processing paging messages (Paging Request) from MSC. As shown in Figure 4, the protocol stack that AN/PCF needs to support is MTP1/MTP2/MTP3/SCCP/BSMAP (Chinese name?), and the bottom layer is the Physical Layer.

In fact, AN/PCF can implement the transparent transmission function in many ways, and the following only uses the physical layer as an example to illustrate the method for realizing transparent transmission.

Referring to Fig. 5, the physical layer (Physical layer) of AN/PCF overlaps the Physical layer of BSS and MSC, and AN/PCF transparently transmits the data between BSS and MSC physical layer, and listens to the downlink data at the same time, that is, MSC to MSC The data in the BSS direction copies the downlink data, and submits the copy of the downlink data to the MTP1 layer for processing, and then goes through the MTP2/MTP3/SCCP/BSMAP layer by layer until the BSMAP layer is processed.

As shown in Figure 6, the A2 interface between the MSC and the BSS is overlapped at the DS0 layer at the AN/PCF, and the AN/PCF only needs to provide DS0 without 56/64kbps PCM.

The specific process for AN/PCF to complete the transparent transmission function is as follows:

The Physical layer in AN/PCF only submits the downlink data copy to the MTP layer; the MTP layer does not route the message, but sends the message to the SCCP layer; the SCCP layer only submits the unit data (UDT, UnitData) message to the BSMAP layer for processing; After the BSMAP layer receives the message, it decodes the message, and judges whether there is a paging (Paging Request) message in it, if it is not a Paging Request message, then discards the message, if it is a Paging Request, then according to the connection status of MS/AT , treated differently. Here, if the MS/AT has data services at this time, the AN/PCF has the service connection information of the MS/AT, and the AN/PCF judges the state of the MS/AT based on this, whether it is idle, dormant or active. If MS/AT has no connection (Session) in AN/PCF, AN/PCF discards the Paging Request message; if MS/AT has Session in AN/PCF, AN/PCF sends Page message to MS/AT and points out The paging is from the cdma20001x network and the MSC paging service option (Service Option).

The present invention covers the existing 1x network, and can keep the physical interface of the original MSC and PDSN unchanged when building the DO overlay network. In order to support the 1x network that can receive DO paging, a T interface between the 1x system and the DO system is optionally added. When the present invention is applied in the case of 1x/DO dual-network overlay coverage, the dual-mode terminal only needs to reside on one network, and content such as system messages or paging messages from the other network can be sent to this network through the current residency network. Dual-mode terminal, so as to reduce the frequent switching and searching of the dual-mode terminal between two networks with different frequency points, and only switch to another network when necessary, saving the battery power consumption of the terminal and saving the terminal time for web searches.

In a word, the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (7)

1. realize the dual-mode terminal system of receiving double-network information simultaneously for one kind, be applied in cdma2000 1x and the HRPD dual mode system that described cdma2000 1x system comprises MSC, 1x BSS/PCF at least, described HRPD system comprises AN/PCF at least, it is characterized in that,

Described MSC is connected with AN/PCF with 1x BSS/PCF, and AN/PCF is used to transmit the message between MSC and the 1x BSS/PCF;

If the 1x/DO dual-mode terminal resides in cdma2000 1x system, the message that the HRPD system will send to this dual-mode terminal is sent to cdma2000 1x system, and cdma2000 1x system sends to this dual-mode terminal after the message of receiving is increased the HRPD system banner;

If the 1x/DO bimodulus resides in the HRPD system eventually, the message that cdma2000 1x system will send to this dual-mode terminal is sent to the HRPD system, and the HRPD system sends to this dual-mode terminal after the message of receiving is increased cdma2000 1x system banner.

2. system according to claim 1 is characterized in that,

MSC in the described cdma2000 1x system and 1x BSS/PCF link to each other with AN/PCF in the HRPD system by the interface of transmission data and signaling respectively,

And 1x BSS/PCF and AN/PCF link to each other by being used to carry the beep-page message between 1x BSS/PCF and the AN/PCF and the signaling interface of system message.

3. system according to claim 1 is characterized in that,

MSC in the described cdma2000 1x system and 1x BSS/PCF link to each other with AN/PCF in the HRPD system by signaling interface respectively,

Described MSC links to each other with 1x BSS/PCF by data-interface,

Described 1x BSS/PCF and AN/PCF link to each other by being used to carry the beep-page message between 1x BSS/PCF and the AN/PCF and the interface of system message.

4. realize the dual-mode terminal method of receiving double-network information simultaneously for one kind, be applied in cdma2000 1x and the HRPD dual mode system, described cdma2000 1x system comprises MSC, 1x BSS/PCF at least, and described HRPD system comprises AN/PCF at least, it is characterized in that this method also comprises:

MSC transmits the message of the 1xBSS/PCF that will be sent to cdma2000 1x system by the AN/PCF of HRPD system;

When the 1x/DO dual-mode terminal resided in cdma2000 1x system, the message that the AN/PCF in the HRPD system will send to this dual-mode terminal was sent to 1x BSS/PCF, and 1x BSS/PCF sends to this dual-mode terminal after the message of receiving is increased the HRPD system banner;

When the 1x/DO bimodulus eventually resided in the HRPD system, the message that cdma2000 1x system will send to this dual-mode terminal was sent to the AN/PCF of HRPD system, and AN/PCF sends to this dual-mode terminal after the message of receiving is increased cdma2000 1x system banner.

5. method according to claim 4, when the 1x/DO dual-mode terminal resides in the HRPD system, it is characterized in that, the step that the message that cdma2000 1x system will send to this dual-mode terminal is sent to the AN/PCF of HRPD system is: 1x BSS/PCF judges from whether system message or beep-page message are arranged in the message of MSC, if have, then this system message and beep-page message are sent to AN/PCF, otherwise, finish.

6. method according to claim 4, when the 1x/DO dual-mode terminal resides in the HRPD system, it is characterized in that, the step that the message that cdma2000 1x system will send to this dual-mode terminal is sent to the AN/PCF of HRPD system is: AN/PCF intercepts in institute's transparent transmission message whether system message and beep-page message are arranged, if have, then directly obtain this system message and beep-page message, otherwise, finish.

7. method according to claim 6 is characterized in that, described intercepting comprises:

Physical layer among b1, the AN/PCF is duplicated the message of described transparent transmission, and its duplicate is sent to the MTP layer;

B2, MTP layer are submitted to BSMAP by SCCP with UDT message with message;

After b3, BSMAP receive this message, decode messages, and judge whether this message is beep-page message, if, execution in step b4 then; If not, then abandon this message, jump out this flow process;

B4, judge whether dual-mode terminal connects in AN/PCF, if do not have, then AN/PCF abandons this beep-page message; If connection is arranged, then AN/PCF sends beep-page message to MS/AT, and points out that this paging is from cdma2000 1x network, and the service option of MSC paging.

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