KR100922477B1 - Method and apparatus of selecting network by using mobile terminal for managing crrm in multi-radio network - Google Patents

Abstract

Disclosed are a mobile terminal-driven network selection method and apparatus in multiple wireless networks. The present invention provides a method comprising the steps of: a) generating a reference value by collecting information related to each network in a multiple radio network composed of at least two different networks by a common radio resource manager (CRRM); b) the CRRM providing the reference value to a mobile terminal belonging to the multiple wireless network; c) determining, by the mobile terminal, one of the multiple wireless networks to change the currently connected network based on the reference value; d) connecting the mobile terminal to the network determined by the mobile terminal and transmitting the result to the CRRM.

Multi-network, CRRM, Radio Resources, Virtual Price, Mobile Terminal

Description

METHOD AND APPARATUS OF SELECTING NETWORK BY USING MOBILE TERMINAL FOR MANAGING CRRM IN MULTI-RADIO NETWORK}

1 illustrates an example of a multiple wireless network including a CRRM according to an embodiment of the present invention.

FIG. 2 is a schematic internal block diagram of the CRRM of FIG. 1.

3 is a flowchart illustrating a method of operating a CRRM led by a mobile terminal according to an embodiment of the present invention.

The present invention relates to a mobile communication system, and more particularly to multi-radio networks including wireless access networks such as CDMA 1x, CDMA 1x EV-DO, WCDMA, HSDPA, 802.16e. The present invention relates to a mobile terminal-led network selection method and apparatus in which a mobile terminal makes a decision on which network to enter.

In various wireless network environments, existing networks such as CDMA 1x, WCDMA, and GSM provide services independently, and heterogeneous networks such as CDMA 1x EV-DO, HSDPA, 802.16e, and WLAN coexist or integrate. It is changing in the form of a multi-radio environment. At present, there is a need to provide a service that seamlessly manages radio resources of heterogeneous networks to provide seamless services and various services to users.

In order to solve this demand, a model for managing radio network resources between heterogeneous networks by configuring signal interfaces between heterogeneous networks has been proposed. However, this lacks the global information, which reduces the optimality of the entire network, and results in a decrease in network performance due to a lot of overhead traffic required during the negotiation process. It also implies the possibility of import. In addition, such a network management model is difficult to modify the system according to the continuous introduction and upgrade of the system has a problem that the scalability is weak.

First, even in heterogeneous converged networks, solutions to traditional radio resource management (RRM) problems such as Call Admission Control (CAC), Load Control (LC), Handover Control (HC), and Power Control (PC) are obviously 1 It will be a primary concern. However, in the heterogeneous converged network environment, not a single network, since there are networks composed of multiple protocols and systems, each of the above problems is difficult to solve, and the procedure for making a decision on each problem is also important. It is rising.

The current method of CRRM suggests that if the CRRM obtains a common comparison parameter based on the measurement values received from each network, the common comparison parameter is based on the information already in the CRRM and the policy information set by the network operator. That is, a virtual price is used to determine which networks need redistribution between networks, or to be used in access selection.

All of these processes are determined by CRRM and take action by instructing the network or mobile terminal. However, this method has a problem that a high-performance mobile terminal may not be able to access various networks desired by providing a powerful authority to the network administrator.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mobile terminal with reference values and / or policy information set in CRRM generated by CRRM based on information received from each network in a multiple wireless network. The present invention provides a method and apparatus for selecting a network led by a mobile terminal in a multi-radio network that efficiently transmits radio resources between heterogeneous networks by providing a method of selecting a network to which the mobile terminal accesses itself.

The present invention has been made in view of the above circumstances, and another object of the present invention is to transmit a reference value generated by CRRM based on information received from each network to a local RRM in a multi-radio network, and transmit the reference value to a local RRM. The mobile terminal in a multiple wireless network efficiently manages wireless resources between heterogeneous networks by providing a method of selecting a network to which the mobile terminal accesses itself by providing the reference value to a mobile terminal belonging to its own network. To provide a network selection method and apparatus.

The present invention has been made in view of the above circumstances, and another object of the present invention is that CRRM or local RRM broadcasts reference value / policy information to the mobile terminal, or the mobile terminal accesses the CRRM or local RRM to access the reference. A method and apparatus for selecting a mobile terminal led network in a multi-radio network that efficiently provides radio resources between heterogeneous networks by providing a method for obtaining value / policy information.

In order to achieve the above object, a mobile terminal-driven network selection method in a multiple wireless network according to a first aspect of the present invention is provided.

a) generating a reference value by collecting each network-related information in a multi-radio network composed of at least two different networks by a common radio resource manager (CRRM); b) the CRRM providing the reference value to a mobile terminal belonging to the multiple wireless network; c) determining, by the mobile terminal, one of the multiple wireless networks to change the currently connected network based on the reference value; And d) connecting the mobile terminal to the network determined by the mobile terminal and transmitting the result to the CRRM.

In order to achieve the above object, a mobile terminal-driven network selection method in a multiple wireless network according to a second aspect of the present invention is provided.

Iii) generating a reference value by collecting each network related information in a multiple radio network composed of at least two different networks by a common radio resource manager (CRRM); Ii) the CRRM providing the reference value to a local RRM (Radio Resource Manager) managing a network belonging to the multiple networks; Iii) the local RRM providing the reference value to a mobile terminal belonging to its network; Iii) determining, by the mobile terminal, one of the multiple wireless networks to change the currently connected network based on the reference value; And iii) the CRRM transmitting the information on the determination to the mobile terminal, accessing the network determined by the mobile terminal, and transmitting the result to the CRRM.

The common radio resource management apparatus in the multiple radio network according to the third aspect of the present invention for achieving the above object,

An individual network information management module for collecting each network related information in a multi-radio network composed of at least two different networks, and receiving, as the network related information, a result of access to a network determined by a mobile terminal; A control module for generating a reference value based on the network-related information, and for generating and managing policy information on traffic redistribution; And a decision module for instructing the mobile terminal to determine a network to access by providing the reference value and the policy information to a mobile terminal belonging to the multiple wireless network.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 illustrates an example of a multi-radio network including a CRRM according to an embodiment of the present invention, and FIG. 2 illustrates a method of operating a CRRM led by a mobile terminal according to an embodiment of the present invention. Flowchart.

As shown in FIG. 1, a common radio resource manager 100 (hereinafter referred to as CRRM) is a wireless access network such as CDMA 1x, CDMA 1x EV-DO, WCDMA, HSDPA, and 802.16e. access networks) and are connected to multiple radio networks consisting of at least two different networks.

That is, the CRRM 100 is connected to each CN (Core Network) of CDMA 1x, CDMA 1x EV-DO, WCDMA, HSDPA, and 802.16e, and the CRRM 100 is connected through an interface / interpreter in the CRRM. It will communicate with each network.

FIG. 2 is a schematic internal block diagram of the CRRM of FIG. 1.

The CRRM 100 collects each network-related information in a multi-radio network composed of at least two different networks, and receives a network connection information as a result of access to the network determined by the mobile terminal as the network-related information. 130); A control module 160 generating a reference value based on the network related information and generating and managing policy information on traffic redistribution; And a decision module 170 for instructing the mobile terminal to determine a network to access by providing the reference value and the policy information to a mobile terminal belonging to the multiple wireless network.

In addition, the CRRM 100 manages information on the local RRM so as to transmit an indication for traffic redistribution determined by the decision module 170 to the local RRM. It is configured to further include.

The individual network information management module 130 receives a load value corresponding to each of uplink and downlink from the predetermined network and provides the load value to the control module 160. 160 determines the change of the network when the load value is compared with the reference value and exceeds the reference value.

In addition, in one application, the individual network information management module 130 may convert the load values of the uplink and the downlink into percentages (%), and then compare the load values of the uplink and downlinks, and then receive the load values having the high percentages. In another application example, the individual network information management module 130 may receive the uplink and downlink load values from the predetermined network and provide them to the control module 160, respectively.

An operating state of the present invention configured as described above will be described with reference to FIG.

The CRRM 100 collects each network related information in a multiple wireless network composed of the different networks (S310).

In this case, since the loads of the uplink and the downlink of each network are treated differently, first, the load amount of the uplink and the downlink is converted into a percentage (%), respectively, and the larger value of the converted values is referred to as a reference value. In this case, the second uplink and downlink loads are averaged and the value is transmitted to the CRRM as a reference value. Finally, it is also possible to send both loads of uplink and downlink respectively to determine which one to use in the CRRM.

The CRRM 100 generates a reference value based on the network related information and establishes a policy for traffic redistribution of the network (S320).

In other words, the CRRM 100 generates a reference value based on information such as load or capacity of a network or cell received from each network, and information on QoS settings of the CRRM 100. The CRRM 100 broadcasts the reference value to the mobile terminal, or the mobile terminal obtains the reference value by querying the CRRM 100 for the reference value (S330).

In this case, the CRRM 100 provides the reference value to a local RRM that manages and manages each network, and pushes or pulls the reference value to a mobile terminal in which the local RRM belongs to its own network. Provided by the method.

In other words, when the reference value generated by the CRRM 100 is directly provided to the mobile terminal, the reference value is stored and managed by the CRRM 100, and the CRRM 100 transmits the reference value to a local RRM. If so, the management of the reference value is assumed to be the local RRM. In this case, it is also possible for both the CRRM and the local RRM to manage the reference value.

In addition, the CRRM 100 transmits the policy information set by the operator to the mobile terminal together with the reference value or provides the mobile terminal to the mobile terminal through the local RRM.

As described above, the mobile terminal, which has received the policy information together with the reference value or the reference value through the CRRM 100 or the local RRM, searches for a network to which it can access from the current multi-network network and selects one of them. Decision) is performed (S340).

The mobile terminal generates and displays a list of networks to which the mobile terminal can access based on the reference value or based on the reference value and the policy information so that the user selects one of them.

In an application example, the mobile terminal generates a network list to which the mobile terminal can access based on the reference value or the reference value and the policy information, and then attempts to access the highest priority network among the network lists. (S350).

However, if the mobile terminal attempts to connect to the highest priority network and the mobile terminal fails to connect to the highest priority network, it attempts to connect to the next priority network.

As described in detail above, according to the mobile terminal-driven network selection method in the multiple wireless network of the present invention, in the environment in which the CRRM is managed to manage the networks that were previously managed individually as one integrated network, There is an advantage of being able to perform radio resource management functions such as traffic redistribution (handover) or access selection.

In addition, by restricting the authority of the network administrator, the mobile terminal can access its desired network, and furthermore, the high-performance mobile terminal can implement anytime access to various networks desired.

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above-described embodiments, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will have the technical idea of the present invention to the extent that various modifications or changes are possible.

Claims (23)

a) generating a reference value by collecting each network-related information in a multi-radio network composed of at least two different networks by a common radio resource manager (CRRM); b) the CRRM providing the reference value to a mobile terminal belonging to the multiple wireless network; c) determining, by the mobile terminal, one of the multiple wireless networks to change the currently connected network based on the reference value; And and d) connecting the mobile terminal to a network determined by the mobile terminal and transmitting the result to the CRRM. The method of claim 1, wherein in step b), And wherein the CRRM broadcasts the reference value to all mobile terminals belonging to the multiple networks. The method of claim 1, wherein in step b), When the mobile terminal queries the reference value with the CRRM, the mobile terminal provides the reference value to the mobile terminal. The process according to any one of claims 1 to 3, wherein in step b), When the CRRM provides a reference value to the mobile terminal, the mobile terminal-driven network selection method in the multi-radio network, characterized in that it provides the policy information for setting to the network set in the CRRM. The method of claim 4, wherein in step c) The mobile terminal further comprises the step of attempting to connect to the highest priority network generated based on the reference value and the policy information. The method of claim 5, wherein in step c) If the mobile terminal fails to connect to the highest priority network as a result of attempting to connect to the highest priority network, selecting a network led by the mobile terminal in the multiple wireless network; Way. The method of claim 6, wherein in step a), a-1) receiving, by the CRRM, a load value corresponding to each of an uplink and a downlink from at least one of the multiple wireless networks; And a-2) comparing the load value with a reference value and determining a change of the network when the reference value is exceeded. The method according to claim 7, wherein in step a-1), At least one of the multiple radio networks compares the load values of the uplink and the downlink to a percentage (%) and compares them, and transmits a load value of which the percentage is greater than or equal to a predetermined level to the CRRM. Mobile terminal-driven network selection method in the network. The method according to claim 7, wherein in step a-1), At least one network of the multiple wireless network transmits the load value of the uplink and downlink to the CRRM, respectively. Iii) generating a reference value by collecting each network related information in a multiple radio network composed of at least two different networks by a common radio resource manager (CRRM); Ii) the CRRM providing the reference value to a local RRM (Radio Resource Manager) managing a network belonging to the multiple networks; Iii) the local RRM providing the reference value to a mobile terminal belonging to its own network; Iii) determining, by the mobile terminal, one of the multiple wireless networks to change the currently connected network based on the reference value; And Iii) the CRRM transmitting the information on the determination to the mobile terminal, connecting to the network determined by the mobile terminal, and transmitting the result to the CRRM. How to choose your network. The method of claim 10, wherein in step iii): And the local RRM broadcasts the reference value to all mobile terminals connected to the own network. The method of claim 10, wherein in step iii): When the mobile terminal queries the reference value with the local RRM to which the mobile terminal is connected, the local RRM provides the reference value to the mobile terminal. Terminal-driven network selection method. The process according to any one of claims 10 to 12, wherein in step iii): Providing policy information on setting to a network set in the CRRM when the CRRM provides the reference value to the local RRM; And And providing the policy information together when the local RRM provides the reference value to the mobile terminal. The method of claim 13, wherein in step iii): The mobile terminal further comprises the step of attempting to connect to the highest priority network generated based on the reference value and the policy information. The method of claim 14, wherein in step iii): If the mobile terminal fails to connect to the highest priority network as a result of attempting to connect to the highest priority network, selecting a network led by the mobile terminal in the multiple wireless network; Way. The method of claim 15, wherein in step iii): Iii-1) the CRRM receiving a load value corresponding to each of an uplink and a downlink from the highest priority network; And Iii-2) comparing the load value with a reference value and determining a change of the highest priority network when the reference value is exceeded. The method according to claim 16, wherein in step VII-1), The highest priority network converts the load values of the uplink and the downlink into percentages and compares them, and transmits a load value of which the percentage is greater than or equal to a predetermined level to the CRRM. How to choose your network. The method according to claim 16, wherein in step VII-1), And wherein the highest priority network transmits load values of the uplink and downlink to the CRRM, respectively. An individual network information management module for collecting each network related information in a multi-radio network composed of at least two different networks, and receiving, as the network related information, a result of access to a network determined by a mobile terminal; A control module generating a reference value based on the network related information, and generating and managing policy information on traffic redistribution; And And a decision module for providing the reference value and the policy information to a mobile terminal belonging to the multiple wireless network to instruct the mobile terminal to determine a network to access. . 20. The apparatus of claim 19, wherein the device is Further comprising a local radio resource manager (RMM) module for managing information on the local RRM so that the indication of the traffic redistribution determined by the decision module can be transmitted to a local RRM managing a network belonging to the multiple radio network. A common radio resource operating device in a multiple radio network, characterized in that. 21. The method of claim 19 or 20, wherein the individual network information management module, The mobile terminal receives a load value corresponding to each of uplink and downlink from the network determined by the mobile terminal, and provides the load value to the control module. The control module compares a load value corresponding to each of the uplink and downlink with a reference value and determines a change of the network when the reference value is exceeded. . The method of claim 21, wherein the individual network information management module, And comparing the load values corresponding to each of the uplink and the downlink by a percentage (%), and then receiving a load value in which the percentage is equal to or greater than a predetermined level. The method of claim 21, wherein the individual network information management module, And a load value corresponding to each of the uplink and the downlink, respectively, from the network determined by the mobile terminal itself.

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