KR101165508B1 - Method of wireless resource allocation after call response for QoS in mVoIP network - Google Patents

Abstract

According to the present invention, a call is allocated by allocating radio resources related to the wireless link QoS through interworking between a Call Session Control Function (CSCF) and a Policy and Charging Rule Function (PCM) (QQ) after a time when the called terminal receives a call. In order to guarantee the quality, to provide a radio resource allocation method after the incoming response to provide QoS in the mVoIP communication network.

To this end, the present invention, in the radio resource allocation method for providing QoS in the mVoIP communication network, when the CSCF receives a call connection response from the destination terminal to the call connection request from the originating terminal side, the CSCF is PCRF (QM) Performing radio resource reservation triggering on radio link QoS to be applied to a call between the calling terminal and the called terminal; The PCRF (QM) performing a radio link QoS resource request / response between corresponding base station controllers accepting the radio link; And when the PCRF (QM) makes a radio resource setup completion response to the CSCF as a response to the radio resource reservation triggering, the CSCF transmits a call connection response of the called terminal to the calling terminal.

mVoIP, Radio Link, QoS, Call Quality, After Incoming Answer, Radio Resource Allocation, UGS, BE

Description

Method of wireless resource allocation after call response for QoS in mVoIP network}

The present invention relates to a method for allocating a radio resource after an incoming response for providing QoS in an mVoIP communication network, and more particularly, a call session control function (CSCF) and a policy and charging rule function (PCRF) after a time point at which the called terminal receives a call. The present invention relates to a method for allocating a radio resource after an incoming response for providing QoS in an mVoIP communication network for allocating radio resources related to the radio link QoS through interworking between so-called QoS managers (QMs).

Recently, VoIP-based call service (eg, voice call service, video call service) as an additional service to portable Internet subscribers by interworking portable Internet (eg WiBro, mobile WiMAX, 3GPP LTE, etc.) and IMS network (IP Multimedia Subsystem) Techniques for providing are being developed.

Meanwhile, in 3GPP TS29.212 / 213/214 standardization (hereinafter referred to as 'prior art'), interworking between CSCF (Call Session Control Function) and PCRF (Policy and Charging Rule Function, also known as QoS Manager (QM)) Techniques for ensuring call quality are discussed.

For example, it provides a good call quality to subscribers due to lack of bandwidth, end-to-end delay, jitter, packet loss, etc. due to wireless network environment for calls between VoIP-based calling terminal and called terminal. Therefore, the prior art proposes a radio link QoS application technique.

That is, in the prior art, in applying QoS to a call between an originating terminal and a terminating terminal, each terminal performs radio resource reservation triggering according to the IMS standard, such as a radio access station (RAS) / base station controller (ACR). In response thereto, the base station controller allocates radio link resources to the terminal after the base station controller receives the authority to use radio resources from the PCRF. This method is called PULL mode.

However, in the prior art as described above, the terminal should perform the radio resource reservation triggering to the base station, which has a problem that a separate API or the like should be implemented in the network driver of the user terminal.

Therefore, even if a separate API is not implemented in the existing terminal or a separate API is not implemented in the new terminal, the radio resource allocation process for providing call quality can be performed during call processing in the equipment on the network other than the terminal. Skill is required.

In the PUSH mode, which is another method according to the IMS standard, which can solve the above problem, when the CSCF, which is the network equipment, completes the call negotiation with the Session Description Protocol (SDP) between the calling / receiving terminals, The resource reservation is triggered, and the PCRF performs a radio link QoS resource request / response process to an access control router (ACR) / radio access station (RAS) and applies QoS to the terminal.

However, in the above two conventional technologies, radio resource reservation / setting (that is, usage right confirmation), and the destination terminal before the ringing ring, which is a point before the destination terminal receives a call, are prevented to prevent ghost ring. After receiving a call, the radio link QoS resource allocation process is performed through the radio resource allocation setting (or gate open setting), which causes insufficient network resources due to too much SIP message processing and radio resource allocation related signal processing until the call is connected. There are problems such as delayed call connection and increased error points. In particular, when the user of the called terminal is not present or does not answer the phone, unnecessary radio resources are reserved and wasted, and there is a problem of wasting network resources for such unnecessary operations. In addition, there is a problem in that the unnecessary SIP message and radio bearer processing signals increase when a ring back tone service or a multimedia call number display service is subscribed.

Therefore, there is a need for a technology for improving call quality by ensuring fast call connection while preventing unnecessary resource consumption in performing the radio resource allocation process.

In addition, even if it fails to perform the radio link QoS resource allocation process, there is no need for a ghosting problem to the subscriber, a technique for enabling a call with a minimum quality of service is required.

Accordingly, the present invention has been proposed to solve the above problems and to meet the above requirements, and after the time the receiving terminal receives a call, CSCF (Call Session Control Function) and PCRF (Policy and Charging Rule Function, PCR) The purpose of the present invention is to provide a radio resource allocation method after an incoming response for providing QoS in an mVoIP communication network for allocating radio resources related to the radio link QoS through interworking between QoS managers (QMs) to ensure call quality.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to the present invention for achieving the above object, in the radio resource allocation method for providing QoS in the mVoIP communication network, when the CSCF receives a call connection response from the destination terminal to the call connection request from the originating terminal side, the CSCF is Performing radio resource reservation triggering on radio link QoS to be applied to a call between the calling terminal and the called terminal by PCRF (QM); The PCRF (QM) performing a radio link QoS resource request / response between corresponding base station controllers accepting the radio link; And when the PCRF (QM) makes a radio resource setup completion response to the CSCF as a response to the radio resource reservation triggering, the CSCF transmits a call connection response of the called terminal to the calling terminal.

As described above, the present invention has an effect of efficiently using radio resources through fast radio link QoS resource setting after an incoming call, thereby ensuring call quality without shortage of network resources and delay of call connection [fast communication connection guarantee].

In addition, the present invention enables the call even if the radio link QoS resource reservation fails, there is an effect that the call can be made with a minimum quality of service through the UGS / BE switching.

In addition, the present invention has the effect that it is possible to perform the radio resource allocation process for providing call quality during call processing in the equipment on the network without implementing a separate API, such as a terminal.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It can be easily carried out. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of an mVoIP communication network to which the present invention is applied.

As shown in FIG. 1, an mVoIP communication network to which the present invention is applied is implemented as an example of a WiBro network and an IMS network, and the WiBro network is a terminal 10, a base station (RAS) 21, a base station controller. Access Control Router (ACR) 22, etc., and the IMS network includes Proxy-Call Session Control Function (P-CSCF) 31, Interrogating-CSCF (I-CSCF) 32, and S-CSCF (Serving). A CSCF 30 composed of a CSCF) 33, a Policy and Charging Rule Function (PCM) 40, and the like.

Although not shown in the drawing, the WiBro network further includes an AAA server for terminal access authentication, an A server for collecting and managing billing data, and an IMS network with other networks (mobile communication network and wired telephone network). MGCF, MGW for interworking, an application server (AS) for providing an application service, a home subscriber server (HSS) for voice service authentication, and a home digital service (HDS) for data additional service authentication are further provided.

Hereinafter, in order to understand the technical description of the present invention, the terminal 10 on the WiBro network is referred to as an 'mVoIP terminal 10', the terminal on the wired telephone network is a 'wired telephone', and the terminal on a mobile communication network is a 'mobile communication terminal', A terminal on a wired Internet [VoIP network] is called an 'Internet phone'.

As shown in FIG. 1, a VoIP-based call service (eg, a voice call service and a video call service) may be provided to a mobile Internet subscriber, that is, an mVoIP terminal 10 by interworking with a WiBro network and an IMS network. Of course, the mVoIP terminal 10 may also be provided with an Internet access service through a gateway linked to the Internet.

In the present invention, the receiving terminal [Note; This called terminal means any terminal equipped with a call function, such as an mVoIP terminal, a landline telephone, a mobile communication terminal, an internet telephone, etc.] and interworking between the CSCF 30 and the PCRF (QM) 40 after the time when the call is received. Via mVoIP terminal [Note; This mVoIP terminal refers to the originating mVoIP terminal and / or the destination mVoIP terminal] to ensure the call quality by allocating radio resources related to the radio link QoS.

That is, in the present invention, the CSCF 30 [note; This CSCF means the originating CSCF or the called CSCF, as well as a single CSCF if the originating terminal and the terminating terminal are accommodated in the same CSCF]. To the PCRF (QM) 40, where the PCRF requests / responses the radio link QoS resource with the base station controller (ACR) 22 / base station (RAS) 21 (hereinafter collectively referred to as base station controller (ACR)). QoS is applied to the wireless section call of the terminal by performing the process.

In the present invention, when the radio link QoS resource reservation is possible, QoS is applied by using an unsolicited grant service (UGS) resource allocation method [fixed band resource allocation method], and BE (Best Effort) when the radio link QoS resource reservation is impossible. QoS is applied using the resource allocation method [Best resource allocation method].

Meanwhile, in the present invention, the CSCF does not transmit the call connection response received from the called terminal to the calling terminal until the CSF receives the response for the radio resource reservation triggering [the radio resource setting completion response] from the PCRF (QM) 40. When the resource setup complete response is received from the PCRF (QM) 40, the call connection response of the called terminal is transmitted to the calling terminal. Thereafter, according to the call connection request / response between the calling terminal and the called terminal, a call (call path) to which QoS is applied is connected, thereby making a good quality call until the end of the call. In particular, the method of delivering 200 OK after the CSCF receives the QoS request processing response from the PCRF is referred to as a `` synchronous synchronization method '' in the present invention.

In another embodiment, a method of delivering a 200 OK immediately before the CSCF makes a QoS request to the PCRF and receives a response is also applicable to the present invention, which is referred to as an 'asynchronous interworking method'. The asynchronous interworking method of the present invention will be described as follows.

In the asynchronous interworking method, when a radio resource setting fails, it can be notified in the form of an event message, and in particular, there is no need to wait for a resource setting time of several hundred ms to 1 second, thereby obtaining very fast call connection and system performance. However, call management may be complicated due to lack of QoS resources or failure to set up.However, for example, a problem of notifying the user that call quality is not guaranteed due to QoS failure, a problem of changing billing processing, and a call as needed. It may cause user dissatisfaction, such as when disabling it, but the benefit of guaranteeing implementation performance is greater.

Then, referring to FIG. 2, through the call connection call process between the originating mVoIP terminal and the called mVoIP terminal [mVoIP network to mVoIP communication network] of the present invention in the 'wireless resource allocation method for QoS provision in the mVoIP communication network' of the present invention. Specifically, referring to FIG. 3, a call connection call between a calling mVoIP terminal and a called landline telephone [mVoIP communication network vs. PSTN network] is performed after receiving an incoming call response for providing QoS in an mVoIP communication network of the present invention. 'How to allocate resources' will be explained in detail.

In addition, a description will be given of a wired telephone as a called terminal with reference to FIG. 3, but a mobile communication terminal and an internet telephone have the same procedure. The description thereof will be omitted.

In addition, when a call is made to an mVoIP terminal from a landline telephone (or a mobile communication terminal or an Internet telephone), that is, a call connection call process between an outgoing landline telephone (or an outgoing mobile terminal or an outgoing Internet telephone) and an incoming mVoIP terminal is described below. It can be understood at the level of those skilled in the art through the description and FIGS. 2 and 3 will not be described.

2 is a call processing flowchart for call connection between mVoIP terminals according to the present invention.

In addition, in the preferred embodiment of the present invention, QoS processing for each terminal will be described below as being separately processed by the destination CSCF and the originating CSCF, but the PCRF is the same as the case where the CSCF is physically the same system. It is readily apparent to those skilled in the art that QoS may be simultaneously processed and that such other embodiments are within the scope of the present invention.

In addition, in the present invention, the implementation example of the PCRF is irrelevant, for example, when only one PCRF exists and uses the same system, exists by network type, exists by subscriber region, exists by CSCF, etc. The system configuration can be variously designed and implemented.

2 is a case where a user of an originating mVoIP terminal 10 makes a call to an incoming mVoIP terminal 50 side user, and the originating mVoIP terminal 10 sends an invite message [invite] to the originating base station (RAS) 21 / A call connection request is sent to the originating CSCF 30 through a base station controller (ACR) 22 (201).

Then, the outgoing CSCF 30 sends the incoming mVoIP terminal 10 to the incoming CSCF 61 that accepts the incoming mVoIP terminal 50 through the incoming telephone number inquiry of the invite message received from the outgoing mVoIP terminal 10. A call connection request is made by passing a byte message (202).

Then, the called CSCF 61 sends an invite message of the mVoIP terminal 10 to the called mVoIP terminal 50 having the called telephone number and makes a call connection request (203). Accordingly, the called mVoIP terminal 50 In response to the reception of the invite message, the ringtone is transmitted [ringing], and the ringback tone is transmitted by sending a 180 Ringing message [180 Ringing] to the calling mVoIP terminal 10 through the called CSCF 61 (204).

Then, when the user of the called mVoIP terminal 50 receives a call [Hook-Off], the called mVoIP terminal 50 sends a 200 OK message [200 OK] to the called CSCF 61 to send the called mVoIP terminal ( A call connection response is made to the invite message of 10) (205).

Then (after the time point of receiving the call connection response from the called mVoIP terminal), the called CSCF 61 does not transmit the call connection response received from the called mVoIP terminal 50 to the calling mVoIP terminal 10 side, PCRF ( QM) 40 performs radio resource reservation triggering on the radio link QoS to be applied to the incoming mVoIP terminal 50 (206). As described above, in the present invention, the radio resource reservation triggering is started when a call connection response is received from the called terminal for fast radio link QoS resource setting.

Then, the PCRF (QM) 40 makes a radio link QoS resource request to the destination base station controller (ACR) 62 that accepts the radio section call of the destination mVoIP terminal 50 (207), and thus the destination base station controller ( ACR) 62 makes a radio link QoS resource response to PCRF (QM) 40 (208).

Then (when receiving the radio link QoS resource response from the destination base station controller), the PCRF (QM) 40 sets the radio resource setup completion response as the response CSCF 61 as a response to the radio resource reservation triggering of the destination CSCF 61. (209).

Then (when receiving the radio resource setting completion response from the PCRF (QM)), the called CSCF 61 transmits the call connection response [200 OK] of the called mVoIP terminal 50 to the calling CSCF 30 (210).

Then (when receiving a call connection response from the incoming CSCF 61), the originating CSCF 30 does not transmit the call connection response of the incoming mVoIP terminal to the calling mVoIP terminal 10 side, the PCRF (QM) (40) In step 211, radio resource reservation triggering relating to radio link QoS to be applied to the originating mVoIP terminal 10 is performed.

Then, the PCRF (QM) 40 makes a radio link QoS resource request to the originating base station controller (ACR) 22 accepting the radio segment call of the originating mVoIP terminal 10 (212), and thus the originating base station controller ( ACR) 22 makes a radio link QoS resource response to PCRF (QM) 40 (213).

Then, upon receiving the radio link QoS resource response from the originating base station controller, the PCRF (QM) 40 sets the radio resource setup completion response as the response to the originating CSCF 30 to the originating CSCF 30. (214).

Then (when receiving the radio resource setting completion response from the PCRF (QM)), the originating CSCF 30 transmits the call connection response [200 OK] of the destination mVoIP terminal 50 to the originating mVoIP terminal 10 (215).

Accordingly, the originating mVoIP terminal 10 sends an ACK message for the call connection response [200 OK] to the called mVoIP terminal 50 side 216, and wirelessly between the originating mVoIP terminal 10 and the called mVoIP terminal 50. A call (path) with link / wired link QoS applied can be connected to start a call and make a good quality call until the end of the call (217).

On the other hand, when the radio link QoS resource response is received from the originating base station controller (ACR) 22 and the destination base station controller (ACR) 62, the radio link QoS resource response is UGS (Unsolicited Grant Service) resource allocation scheme [ Fixed-band resource allocation method], if the wireless link QoS resource reservation is possible, the PCRF (QM) 40 is a radio link QoS by the UGS resource allocation method to the radio section call between the originating mVoIP terminal 10 and the destination mVoIP terminal 50. Apply. Here, in the present invention, the call interval to which QoS is applied may include not only the wireless section between the calling terminal and the called terminal but also the wired section, which is individually triggered and set by the calling CSCF and the called CSCF. For example, in the present invention, the link QoS is preferably interpreted as a radio link QoS for a radio section call and / or a wire link QoS for a wired section call.

If the radio link QoS resource response is impossible to reserve the radio link QoS resource by the UGS resource allocation method, the PCRF (QM) 40 may call the radio section call between the originating mVoIP terminal 10 and the destination mVoIP terminal 50. The radio link QoS is applied as a BE (Best Effort) resource allocation scheme [Best resource allocation scheme]. As described above, the present invention additionally generates and uses a dynamic service flow (logical channel) without modifying an initial service flow to enable a call even when the radio link QoS resource reservation fails. In this way, even if the creation of the logical channel to be added fails, the call can be made to the initial service flow of the existing BE quality of service without terminating the access of the terminal.

On the other hand, during the call by applying the radio link QoS to the radio interval call between the originating mVoIP terminal 10 and the destination mVoIP terminal 50 by using the UGS resource allocation method, changes in the network environment (e.g., terminal movement, base station resource change, When it is difficult to maintain the radio link QoS of the UGS resource allocation method for the radio section call between the originating mVoIP terminal 10 and the destination mVoIP terminal 50 due to a radio (air) channel load, etc.), a bearer channel is used. The radio link QoS of the radio section call between the originating mVoIP terminal 10 and the called mVoIP terminal 50 is switched from the UGS resource allocation scheme to the BE resource allocation scheme. As described above, in the present invention, even when the radio link QoS resource reservation fails, the call can be made, and even when it is difficult to maintain the UGS resource allocation method during the call, the call can be made with a minimum quality of service by switching to and maintaining the BE resource allocation method. .

On the other hand, in the present invention as described above after the completion of the radio link QoS resource request / response process in a state that does not send a call connection response [200 OK] to the originating terminal after a time point for receiving a response to the call connection request from the destination terminal; The call link response [200 OK] is transmitted to the calling terminal. The radio link QoS resource request / response process takes up to 500 msec for each incoming / outgoing call (total time of up to 1 second). It is possible to provide a call connection so fast that the call connection between subscribers does not feel delayed. Here, for example, in the present invention, it is designed to be 500 msec maximum for each origination and destination, but it can be found that it can be set variably according to the type of network or whether asynchronous interworking is applied.

3 is a call processing flowchart for a call connection between an mVoIP terminal and a landline telephone according to the present invention.

3 is a case where a user of an originating mVoIP terminal 10 makes a call to a user of an incoming landline telephone 70, and the originating mVoIP terminal 10 sends an invite message [invite] to the originating base station (RAS) 21 /. A call connection request is sent to the originating CSCF 30 through the base station controller (ACR) 22 (301).

Then, the outgoing CSCF 30 sends the outgoing mVoIP terminal 10 to the incoming landline telephone network system 80 that accommodates the incoming landline telephone 70 through the incoming telephone number inquiry of the incoming message received from the outgoing mVoIP terminal 10. The call connection request is delivered by sending an invite message of the user (302). Here, the wired telephone network system 80 includes POTS (MGCF), MGW, SGW, LEX, etc., and since IMS network and wired telephone network interworking are well known technologies, descriptions related to call processing will be omitted.

Then, the incoming wired telephone network system 80 converts the invite message of the mVoIP terminal 10 into an IAM (Initial Address Message) message, which is a message format suitable for the wired telephone network, to the incoming landline telephone 70 having the corresponding incoming telephone number. This IAM message is sent to make a call connection request (303).

Accordingly, the incoming landline telephone 70 transmits a ringtone in response to receiving the IAM message [ringing], and the incoming landline telephone network system 80 sends a 183 session program to the originating mVoIP terminal 10 through the originating CSCF 30. A ring message [183 Session Progress] is sent to send a ringback tone (304). In addition, in the present invention, it is clear that other signaling schemes such as 180 ringing may be used instead of 183 session progress.

Then, when the user of the incoming landline telephone 70 receives a call [Hook-Off], the incoming landline telephone 70 sends an Answer Message (ANM) message to the incoming landline telephone network system 80 to make a call connection response. 305, and the incoming landline telephone system 80 converts the ANM message received from the incoming landline telephone 70 into a 200 OK message [200 OK], which is a message format suitable for the mVoIP network, to the originating CSCF 30. The 200 OK message is sent to the call connection response to the invite message of the originating mVoIP terminal 10 (306).

Then (after a time point at which the call connection response is received from the called landline telephone), the calling CSCF 30 does not transmit the call connection response received from the called landline telephone 70 to the calling mVoIP terminal 10 side, and the PCRF ( QM) 40 performs radio resource reservation triggering on radio link QoS to be applied to the originating mVoIP terminal 10 (307). As described above, in the present invention, the radio resource reservation triggering is started when a call connection response is received from the called terminal for fast radio link QoS resource setting.

Then, the PCRF (QM) 40 makes a radio link QoS resource request to the originating base station controller (ACR) 22 that accepts the radio segment call of the originating mVoIP terminal 10 (308), and thus the originating base station controller ( ACR) 22 makes a radio link QoS resource response to PCRF (QM) 40 (309). Here, the PCRF (QM) 40 does not perform the radio link QoS resource request / response with the landline telephone system because the call on the called terminal side is a landline network.

Then, upon receiving the radio link QoS resource response from the originating base station controller, the PCRF (QM) 40 sets the radio resource setup completion response as the response to the originating CSCF 30 to the originating CSCF 30. (310).

Then (when receiving a radio resource setup completion response from PCRF (QM)), the originating CSCF 30 sends the call connection response [200 OK] of the incoming landline telephone 70 through the originating base station controller (ACR) 22 to the originating mVoIP. The transmission to the terminal 10 side (311).

Accordingly, the originating mVoIP terminal 10 sends an ACK message for the call connection response [200 OK] to the called landline telephone 70 side (312), and wirelessly between the originating mVoIP terminal 10 and the called landline telephone 70. A call (path) with a link QoS applied can be connected to start a call and make a good quality call until the end of the call (313).

On the other hand, when receiving the radio link QoS resource response from the originating base station controller (ACR) 22 in step '309', if the radio link QoS resource response is possible to reserve the radio link QoS resource by the UGS resource allocation scheme, the PCRF The QM 40 applies the radio link QoS to the radio section call of the originating mVoIP terminal 10 by the UGS resource allocation scheme. If the radio link QoS resource response is impossible to reserve the radio link QoS resource by the UGS resource allocation method, the PCRF (QM) 40 performs the radio link by the BE resource allocation method on the radio section call of the originating mVoIP terminal 10. Apply QoS.

On the other hand, during the call by applying the radio link QoS to the radio section call of the originating mVoIP terminal 10 by the UGS resource allocation method, the network environment changes (e.g., terminal movement, base station leasing state change, wireless (air) channel load, etc.) If it is difficult to maintain the radio link QoS of the UGS resource allocation scheme for the radio section call of the originating mVoIP terminal 10, the radio segment call of the originating mVoIP terminal 10 is performed using a bearer channel. Switch the radio link QoS from UGS resource allocation scheme to BE resource allocation scheme.

Meanwhile, the method of the present invention as described above can be written in a computer program. And the code and code segments constituting the program can be easily deduced by a computer programmer in the field. In addition, the written program is stored in a computer-readable recording medium (information storage medium), and read and executed by a computer to implement the method of the present invention. The recording medium may include any type of computer readable recording medium.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

1 is a configuration diagram of an embodiment of an mVoIP communication network to which the present invention is applied;

2 is a call processing flowchart for call connection between mVoIP terminals according to the present invention;

3 is a call processing flowchart for a call connection between an mVoIP terminal and a landline telephone according to the present invention.

* Explanation of symbols on the main parts of the drawing

10: mVoIP terminal 21: base station (RAS)

22: base station controller (ACR) 30: CSCF

40: PCRF (QM)

Claims (3)

A radio resource allocation method for providing QoS in an mVoIP communication network, When the CSCF receives the call connection response from the called terminal to the call connection request from the calling terminal, the CSCF triggers radio resource reservation on the radio link QoS to be applied to the call between the calling terminal and the called terminal by PCRF (QM). Doing; The PCRF (QM) performing a radio link QoS resource request / response between corresponding base station controllers accepting the radio link; And When the PCRF (QM) responds to the CSCF as a response to the radio resource reservation triggering, completing a radio resource setup completion response, the CSCF transmitting a call connection response from the called terminal to the calling terminal; Radio resource allocation method after the incoming response to provide QoS in the mVoIP communication network comprising a. The method of claim 1, In the PCRF (QM), On the basis of the radio link QoS resource response, the radio link QoS is applied to a call between the originating terminal and the called terminal by using a UGS (Unsolicited Grant Service) resource allocation scheme. And if the UGS resource allocation scheme fails, applying radio link QoS to a call between the originating terminal and the called terminal using a best effort (BE) resource allocation scheme. 3. The method according to claim 1 or 2, In a state where the call between the originating terminal and the called terminal is connected by applying radio link QoS of a UGS (Unsolicited Grant Service) resource allocation scheme, If it is difficult to maintain the radio link QoS of the UGS resource allocation method, the radio link QoS of the call between the calling terminal and the called terminal is changed from a UGS resource allocation method to a BE (Best Effort) resource allocation method using a bearer channel. A method for allocating radio resources after an incoming response for providing QoS in an mVoIP communication network.

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