CN102045808A - Method for guiding terminal to reside and access network equipment - Google Patents

Abstract

Embodiments of the present invention provide a method for guiding a terminal to reside and an access network device. The method includes: receiving the signal quality of the different-frequency carrier frequency of the source network searched by the terminal at the start-up registration frequency point; if the signal quality of the different-frequency carrier frequency of the source network satisfies the switching condition, switching the terminal to the selected different frequency carriers of the source network, and measure the forward link quality and reverse link quality of the terminal on the different frequency carrier frequencies of the source network; if the terminal is on different frequency carriers of the source network The quality of the forward link on the frequency carrier and the quality of the reverse link meet the redirection condition, and the terminal is redirected to a different frequency carrier of the target network, so that the terminal is on a different frequency of the target network dwell on the carrier frequency. The access network equipment includes: a transceiver module, a handover measurement module and a redirection module. The solutions provided by the embodiments of the present invention can realize reliable terminal access and camping.

Description

Method for guiding terminal to reside and access network equipment

technical field

The embodiments of the present invention relate to communication technology, and in particular to a method for guiding a terminal to reside and an access network device.

Background technique

At present, the penetration rate of mobile communication is very high in commercial and residential areas in the city center. Buildings represented by office buildings and residential quarters have stronger demands for voice and data mobile services. Using the network coverage structure combining macro cells and micro cells, it has better adaptability and can provide users with better experience.

As the evolution technology of CDMA20001X from 2G to 3G, CDMA20001xEV-DO has greatly improved its forward/reverse rate, Quality Of Service (QoS for short) guarantee function and system capacity. Indoor coverage systems represented by microcells/millicells usually use 3G networks such as CDMA20001xEV-DO for coverage, while outdoor coverage systems represented by macrocells usually use 2G networks such as CDMA20001x for coverage. If the indoor coverage system and the outdoor coverage system use the same frequency coverage, the user data service experience will be poor due to mutual interference and frequent switching. Therefore, the indoor coverage system and the outdoor coverage system preferably use different frequency coverage. Inter-frequency coverage can effectively overcome the mutual interference between the indoor coverage system and the outdoor coverage system, and users can obtain good air interface quality, thereby greatly improving the data service rate.

A dual-mode terminal is a terminal that can work in the source network in the source network mode and in the target network in the target network mode. For example, a terminal that can work under both the CDMA20001x network and the CDMA20001xEV-DO network can be called a 2G/3G dual-mode terminal.

When the dual-mode terminal enters the indoor coverage system from the outdoor coverage system, if it wants to access the network, since the indoor coverage system adopts a different-frequency scheme, there is no co-frequency interference from the outdoor base station, so even if the received signal power (Rx) When it is low, it can also guarantee a good signal-to-noise ratio. At this time, the terminal often has insufficient transmit signal power (Tx) due to the obstruction of the wall of the building, so the problem of forward/reverse imbalance will occur. If the dual-mode terminal is redirected to the unbalanced front/reverse carrier frequency, it will cause problems such as dual-mode terminal access failure or call drop, and the dual-mode terminal will fail to capture the EV-DO system due to redirection failure. And other issues.

Contents of the invention

Embodiments of the present invention provide a method for guiding a terminal to camp and an access network device to avoid guiding the terminal to camp on the target network when the front/reverse imbalance is unbalanced, so that the terminal can reliably camp on the target network middle.

On the one hand, an embodiment of the present invention provides a method for guiding a terminal to reside in a common coverage area of a source network and a target network, including:

The signal quality of the inter-frequency carrier frequency of the source network searched by the receiving terminal at the power-on registration frequency point;

If the signal quality of the different-frequency carrier frequency of the source network satisfies the handover condition, switch the terminal to the different-frequency carrier frequency of the source network, and measure the terminal on the different-frequency carrier frequency of the source network The quality of the forward link and the quality of the reverse link;

If the forward link quality and reverse link quality of the terminal on the different frequency carrier of the source network meet the redirection condition, redirect the terminal to the different frequency carrier of the target network, so that The terminal camps on different carrier frequencies of the target network.

On the other hand, an embodiment of the present invention also provides an access network device that provides services of a source network and a target network, including:

The transceiver module is used to receive the signal quality of the different-frequency carrier frequency of the source network searched by the terminal at the start-up registration frequency point;

A handover test module, configured to switch the terminal to the different frequency carrier of the source network if the signal quality of the different frequency carrier of the source network satisfies the handover condition, and measure the performance of the terminal on the source network Forward link quality and reverse link quality on different frequency carriers;

A redirection module, configured to redirect the terminal to a different frequency of the target network if the forward link quality and reverse link quality of the terminal on the different frequency carrier of the source network meet the redirection condition carrier frequency, so that the terminal camps on a different frequency carrier frequency of the target network.

In the method for guiding a terminal to camp and the access network device in the embodiment of the present invention, by switching the terminal to the different carrier frequency of the power-on registration frequency point in the source network whose signal quality meets the switching condition, the different frequency carrier frequency of the source network Measure the quality of the forward/reverse link on the Internet. If the quality of the forward/reverse link meets the conditions, the terminal will be redirected to the different-frequency carrier of the target network to reside, effectively avoiding the problem of poor quality of the forward/reverse link. When the conditions are met, the terminal is redirected to the inter-frequency carrier frequency of the target network.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of a method for guiding a terminal to reside in provided by an embodiment of the present invention;

FIG. 2 is an interactive flowchart of a method for guiding a terminal to reside provided by another embodiment of the present invention;

FIG. 3 is a schematic diagram of network frequency distribution provided by another embodiment of the present invention;

Fig. 4 is a schematic structural diagram of an access network device provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the network environment provided by this embodiment, there are two kinds of networks operating in two modes, which are respectively referred to as a source network and a target network. The source network has a carrier frequency with the same frequency as the power-on registration frequency point, and a carrier frequency with a different frequency from the power-on frequency point. Fig. 1 is a flow chart of a method for guiding a terminal to reside in provided by an embodiment of the present invention. As shown in Fig. 1, the method includes:

Step 101: The access network device receives the signal quality of the different-frequency carrier frequency of the source network searched by the terminal at the start-up registration frequency point;

Wherein, it should be noted that the access network device simultaneously provides services of the source network and the target network, and the terminal is located in a common coverage area of the source network and the target network. The terminal is a multi-mode working terminal, which works in the source network in the source network's working mode and in the target network in the target network's working mode. For example, a 2G/3G dual-mode terminal working on a CDMA20001x network and a CDMA20001xEV-DO network at the same time.

Step 102: If the received signal quality of the different-frequency carrier frequency of the source network satisfies the switching condition, the access network device switches the terminal to the different-frequency carrier frequency of the above-mentioned source network, and measures the different-frequency carrier frequency of the terminal on the above-mentioned source network Forward link quality and reverse link quality on the carrier frequency;

Wherein, the above-mentioned handover may be a hard handover, and a hard handover refers to a handover between base stations or coverage cells of different frequencies. The process of this handover is that the terminal temporarily disconnects the call, transmits the handover signaling on the channel connected with the original base station, the terminal automatically tunes to the new frequency, contacts the new base station, establishes a new channel, and completes the handover the process of. Simply put, it is "disconnect first, switch later".

Step 103: If the forward link quality and reverse link quality of the terminal on the different-frequency carrier frequency of the source network meet the redirection conditions, redirect the terminal to the different-frequency carrier frequency of the target network, so that the terminal Camp on the inter-frequency carrier frequency of the target network.

The embodiment of the present invention provides a method for guiding a terminal to camp, by switching the terminal to a different carrier frequency of the power-on registration frequency point in the source network whose signal quality meets the handover condition, and measuring on the different frequency carrier frequency of the source network The quality of the forward/reverse link, if the quality of the forward/reverse link meets the conditions, the terminal will be redirected to the different-frequency carrier of the target network to reside, effectively avoiding that the quality of the forward/reverse link does not meet the conditions Redirect the terminal to the inter-frequency carrier frequency of the target network.

FIG. 2 is an interactive flow chart of a method for guiding a terminal to reside according to yet another embodiment of the present invention. In this embodiment, the source network is CDMA20001x, and the target network is CDMA20001xEV-DO as an example for illustration. The application scenario of this method is set as the dual-mode terminal enters the room from the outside. Both the indoor area and the outdoor area cover the active network and the target network. The indoor area and the outdoor area of the source network are covered by different frequencies. same-frequency carrier frequency. Figure 3 shows a schematic diagram of network frequency distribution provided by this embodiment. F1 is the carrier frequency of the same frequency in the outdoor area of CDMA20001x, and the same frequency in the indoor area can be used as a pilot beacon to guide the terminal to switch from F1 to F2. F2 is the different-frequency carrier frequency of CDMA20001x belonging to the indoor area, and F3 is the different-frequency carrier frequency of the CDMA20001x EV-DO belonging to the indoor area. bid cost. As shown in Figure 2, the method includes:

Step 201: The 1x/EV-DO dual-mode data card terminal enters the room from the outside, starts up, and sends a start-up registration request message to the access network device at the start-up registration frequency point F1;

Step 202: The access network device receives the above-mentioned start-up registration request message, sends a registration response message to the terminal, allows the terminal to access the network, and work on its start-up registration frequency;

Step 203: The terminal receives the registration response message sent by the access network device, initiates a 1x test call on the power-on registration frequency point, and measures the signal quality of the indoor 1x different-frequency carrier frequency F2 through different-frequency search;

Among them, the symbol 1x conventionally refers to the CDMA2000 wireless technology using a pair of 1.25MHz radio channels. 1x test call can include various tests such as Enhanced Variable RateCodec (EVRC for short), or Test Data Service Option (TDSO for short), or loop response (Loop_ack) Call type, which is not specifically limited here.

Step 204: The terminal continuously measures the signal quality of the 1x inter-frequency carrier frequency F2, and reports a search report to the access network device;

Step 205: The access network device judges whether the signal quality of the 1x inter-frequency carrier frequency F2 satisfies the handover condition;

If the signal quality of the 1x inter-frequency carrier F2 reaches the preset threshold value, that is, the 1x inter-frequency carrier satisfies the switching condition, go to step 206;

If the signal quality of the 1x inter-frequency carrier F2 does not reach the preset threshold value, that is, the 1x inter-frequency carrier does not meet the handover condition, the 1x test call is released.

Step 206: the access network device switches the terminal to 1x different frequency carrier frequency F2;

Step 207: The terminal makes a test call on the 1x different-frequency carrier frequency F2;

Step 208: The access network device continuously measures the terminal's forward link quality and reverse link quality at 1x inter-frequency carrier frequency F2;

If the quality of the forward link and the quality of the reverse link meet the redirection condition, perform step 209;

If the quality of the forward link and the quality of the reverse link do not meet the redirection condition, end.

Among them, the forward/reverse link quality can be measured by measuring chip energy/interference spectral density (ChipEnergy/Other cell Interfere, referred to as: Ec/Io), frame error rate (Frame Error Rate, referred to as: FER), error packet Rate (Packet Error Rate, PER for short), Rx/Tx and other information, but may not be limited to these information.

Step 209: The access network device redirects the terminal to the 1x inter-frequency carrier F2, and releases the 1x test call;

Among them, because the test call does not make the terminal stable on F2, in order to allow the terminal to achieve stable camping on 1x different frequency carrier F2, the access network device should redirect the terminal to 1x different frequency carrier F2 superior.

Step 210: The terminal camps on the 1x inter-frequency carrier frequency F2, and initiates a registration request;

The registration request may be a registration request based on a location area, or a registration request based on a subnet, or the like. This registration request has different names in different networks.

Step 211: The access network device receives the registration request sent by the terminal, sends an EV-DO network redirection message to the terminal, redirects the terminal to the indoor EV-DO inter-frequency carrier frequency F3, and releases the EV-DO call, The terminal finishes camping on the EV-DO inter-frequency carrier frequency F3.

It should be noted that although the present embodiment only uses the source network as CDMA20001x and the target network as CDMA20001xEV-DO as an example, in fact the source network is CDMA20001xEV-DO and the target network is CDMA20001x, you can also refer to the present invention The method provided in the embodiment guides the terminal to reside.

The embodiment of the present invention provides a method for guiding a terminal to camp, by switching the terminal to a different carrier frequency of the power-on registration frequency point in the source network whose signal quality meets the handover condition, and measuring on the different frequency carrier frequency of the source network forward/reverse link quality, and decide whether to redirect the terminal to the different-frequency carrier frequency of the target network according to the measurement results, so that the terminal can reside on the different-frequency carrier frequency of the target network, effectively avoiding the terminal Problems such as terminal access failure or call drop caused by redirection to the different carrier frequency of the target network with forward/reverse imbalance.

FIG. 4 is a structural view of an access network device provided by an embodiment of the present invention. As shown in FIG. 4 , the access network device includes: a transceiver module 401 , a handover test module 402 and a redirection module 403 . Among them, the transceiver module 401 is used to receive the signal quality of the different-frequency carrier frequency of the source network searched by the terminal on the power-on registration frequency point; the handover test module 402 is used to if the signal quality of the different-frequency carrier frequency of the source network meets the handover condition, Switch the terminal to the different-frequency carrier frequency of the source network, and measure the forward link quality and reverse link quality of the terminal on the different-frequency carrier frequency of the source network; the redirection module 403 is used to The forward link quality and reverse link quality on the different-frequency carrier of the target network meet the redirection conditions, and the terminal is redirected to the different-frequency carrier of the target network, so that the terminal is on the different-frequency carrier of the target network stay.

In one embodiment, the transceiver module 401 is further configured to: receive a power-on registration request message sent by the terminal on the power-on registration frequency point, and send a registration response message to the terminal, so that the terminal searches for the source network information on the power-on registration frequency point. The signal quality of the inter-frequency carrier frequency.

In another embodiment, the redirection module 403 is also used to: redirect the terminal to a different-frequency carrier of the target network so that the terminal resides on a different-frequency carrier of the target network; the transceiver module 401 is also used to : Receive the registration request sent by the terminal, and send a redirection message of the target network to the terminal.

Wherein, the source network is a CDMA20001x network, and the target network is a CDMA20001xEV-DO network; or, the source network is a CDMA20001xEV-DO network, and the target network is a CDMA20001x network.

An embodiment of the present invention provides an access network device. By switching the terminal to a different carrier frequency of a power-on registration frequency point in the source network whose signal quality meets the switching condition, the pre-/ Reverse link quality, if the quality of the forward/reverse link meets the conditions, the terminal will be redirected to the different frequency carrier of the target network to reside, effectively avoiding the The terminal is redirected to the inter-frequency carrier of the target network.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place , or can also be distributed to at least two network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit 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 can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (9)

1. A method for guiding a terminal to camp on, the terminal being in a common coverage area of a source network and a target network, the method comprising:

receiving the signal quality of the pilot frequency carrier frequency of the source network searched by the terminal on the startup registration frequency point;

if the signal quality of the pilot frequency carrier frequency of the source network meets the switching condition, switching the terminal to the pilot frequency carrier frequency of the source network, and measuring the forward link quality and the reverse link quality of the terminal on the pilot frequency carrier frequency of the source network;

if the forward link quality and the reverse link quality of the terminal on the pilot frequency carrier frequency of the source network meet the redirection condition, the terminal is redirected to the pilot frequency carrier frequency of the target network, so that the terminal resides on the pilot frequency carrier frequency of the target network.

2. The method of claim 1, wherein the terminal is a multimode operating terminal, and wherein the terminal operates in an operating mode of the source network in the source network and operates in an operating mode of the target network in the target network.

3. The method for guiding terminal to reside according to claim 1 or 2, wherein before the signal quality of the pilot carrier frequency of the source network searched by the receiving terminal on the power-on registration frequency point, the method further comprises:

and receiving a startup registration request message sent by a terminal on the startup registration frequency point, and sending a registration response message to the terminal so that the terminal searches for the signal quality of the pilot frequency carrier frequency of the source network on the startup registration frequency point.

4. The method for guiding terminal to camp according to claim 1 or 2, wherein the redirecting the terminal to the target network on the inter-frequency carrier frequency comprises:

redirecting the terminal to the pilot frequency carrier frequency of the source network so that the terminal resides on the pilot frequency carrier frequency of the source network;

and receiving a registration request sent by the terminal, and sending a redirection message of a target network to the terminal.

5. The method of guiding terminal parking according to claim 1 or 2, characterized in that:

the source network is a CDMA20001x network, and the target network is a CDMA20001xEV-DO network; or,

the source network is a CDMA20001xEV-DO network, and the target network is a CDMA20001x network.

6. An access network device for providing services of a source network and a target network, comprising:

the receiving and sending module is used for receiving the signal quality of the pilot frequency carrier frequency of the source network searched by the terminal on the startup registration frequency point;

a handover test module, configured to handover the terminal to the pilot frequency carrier frequency of the source network if the signal quality of the pilot frequency carrier frequency of the source network meets a handover condition, and measure a forward link quality and a reverse link quality of the terminal on the pilot frequency carrier frequency of the source network;

a redirection module, configured to redirect the terminal to a pilot frequency carrier frequency of a target network if the forward link quality and the reverse link quality of the terminal on the pilot frequency carrier frequency of the source network meet a redirection condition, so that the terminal resides on the pilot frequency carrier frequency of the target network.

7. The access network device of claim 6, wherein the transceiver module is further configured to: and receiving a startup registration request message sent by a terminal on the startup registration frequency point, and sending a registration response message to the terminal so that the terminal searches for the signal quality of the pilot frequency carrier frequency of the source network on the startup registration frequency point.

8. The access network device of claim 6, wherein the redirection module is further configured to: redirecting the terminal to the pilot frequency carrier frequency of the source network so that the terminal resides on the pilot frequency carrier frequency of the source network;

the transceiver module is further configured to: and receiving a registration request sent by the terminal, and sending a redirection message of a target network to the terminal.

9. The access network device of claim 6, wherein:

the source network is a CDMA20001x network, and the target network is a CDMA20001xEV-DO network; or,

the source network is a CDMA20001xEV-DO network, and the target network is a CDMA20001x network.

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