KR101076297B1 - Method for establishing, re-establishing and deleting the radio access bearer of a selected service - Google Patents

Abstract

The present invention provides a method of configuring, relocating and deleting a radio access bearer of a selection service.

The present invention uses different multimedia broadcasting and multicast service marks and the same radio access bearer mark for each selection service to distinguish between different selection services when configuring and relocating the radio access bearer; Upon deletion of the radio access bearer, the user equipment finds a radio access bearer corresponding to the selected service, which is uniquely marked by the domain indication of the core network, the radio access bearer indication and the multimedia broadcast and multicast service indication, and the radio Delete all information of the connection bearer.

The present invention can distinguish different selection services using multimedia broadcast and multicast service signs, and further proceed with configuration and relocation of radio access bearers for each user equipment. In addition, the present invention may selectively delete the selection service, and when deleting the selection service, do not delete other selection services together.

Description

METHOOD FOR ESTABLISHING, RE-ESTABLISHING AND DELETING THE RADIO ACCESS BEARER OF A SELECTED SERVICE}

The present invention relates to data services in the mobile communication area, and more particularly, to a method for configuring, relocating and deleting a radio access bearer of a selection service.

With the proliferation of large-capacity mobile phones, the application of mobile data services is also becoming more active, and the demand for mobile communication is diversifying beyond phone, message and mobile web surfing. In order to effectively use mobile network resources, 3GPP proposed Multimedia Broadcast Multicast Service (MBMS), which provides a point-to-multipoint point where one data source sends data to multiple users on a mobile network. By providing a variety of services, sharing of network resources is realized, and the utilization rate of network resources, especially valuable Air Interface resources, is improved.

MBMS service is a technology in which shared network resources transfer data from one data source to multiple targets. MBMS, defined by 3GPP, can realize multicast and broadcasting of pure text, low message type, and high speed. Multicast and broadcasting of multimedia services can be realized, and various rich video, audio and multimedia services can be provided.

MBMS includes a multicast service and a broadcast service. Each multicast service requires a joining process, and the user must go to the Broadcast-Multicast Service Center (BM-SC) and activate the multicast service. UE (user equipment or mobile equipment, user equipment) may be activated locally.

In the deployment of radio bearers, the multicast service may specify the PTM (may be abbreviated as PTM or PtM) and PTP (may be abbreviated as PTT or PtP) bearer types. Can be used, also called dedicated bearer type. Meanwhile, only P-T-M can be used as a broadcast service.

In the multicast service, when a user subscribes to one MBMS service, the UE performs an activation process and assigns its own NSAPI ID (Network Service Access Point Identifier ID) and an NSAPI ID corresponding to the corresponding service. Is sent to the CN (Core Network) side. If a UE in idle mode or CELL_PCH, CELL_FACH, or URA_PCH responds to a counting (MBMS counting) or responds to a PtP bearer configuration request (MBMS PtP radio bearer request), then it configures an RRC connection or cell update. The UE configures the Iu connection by sending a service request message (Service Request) to the core network (CN). In this case, an interface between the core network CN and a radio network controller (RNC) may be referred to as an Iu interface, and a connection made through the Iu interface may be defined as an Iu connection. Accordingly, the UE completes the Iu connection on the Iu interface, and on the Iu interface, the CN sends a PtP RAB ID corresponding to all MBMS services subscribed to the UE to the radio network controller (RNC) through a UE linking process. Each PtP RAB ID corresponds to one MBMS Service ID, and each PtP RAB ID corresponds to an NSAPI ID of each corresponding UE. Therefore, with respect to the service ID of the multicast service to which the user subscribes, the UE side allocates a RAB ID corresponding to one NSAPI ID, and the CN side acquires the NSAPI ID and RAB ID of the same corresponding UE.

According to the 3GPP standard, on the Iu interface, the CN sends one MBMS service correlation information to the RNC through a Session Start message, among which includes a RAB parameter corresponding to the corresponding MBMS service. Service type, maximum yield and guaranteed yield, and later RNCs are used to configure the radio bearer.

In the multicast service, the RNC goes through the counting process, and if one bears a multicast service to PtM, the RNC uses the MCCH to indicate "MBMS COMMON PTM RB INFORMATION" and "MBMS". Current cell point-to-multipoint radio bearer information (MBMS CURRENT PTM RB INFORMATION) ", and the message includes the service ID, radio bearer configuration information, transport channel configuration information, physical channel configuration information, etc. of the corresponding multicast service. The UE subscribing to the service receives the MBMS multicast service through the public channel based on the configuration information included in the received message. If the RNC goes through the counting and bears the multicast service as a PtP, the RNC further advances each UE acquired from the core network (CN) through the UE linking process using the RAB ID for the MBMS Service ID. The RB (Radio Bearer) of the UE may be configured.

One important application service based on MBMS technology is Mobile TV over MBMS, also called mobile TV, and in fact, similar services include mobile music and mobile phone securities. In order to implement Mobile TV over MBMS in mobile phones more effectively, we have supplemented the current 3GPP standard, calling Mobile TV service based on MBMS technology as enhanced MBMS technology, collectively called Selected Service, It is mainly used by mobile phone users to reduce switching delay time when switching different TV channels and to reduce service activation time of different channels.

To this end, as shown in FIG. 1, in the current 3GPP standard, the MBMS service is further refined to include two service types: a multicast service type and a broadcast service type; It is divided into two distribution modes, that is, multicast mode and broadcast mode. In the present invention, all MBMS service types with the characteristics of multicast service type and broadcast mode type are the above selected service, and each selected service, that is, each (mobile) TV channel has one selected service ID. May be used, or an MBMS Service Sign (MBMS Service Identity) may be used, and the MBMS Service must be an optional service. The mobile TV service does not require a joining process, but only needs to be activated locally and equipped with P-T-P and P-T-M radio bearer schemes.

The RNC or the UE both store and maintain the "ESTABLISHED RABS" (configured radio access bearer) variable. As shown in FIG. 2, this shows the stratum relationship where one or more services are stored in the variable "ESTABLISHED RABS". The variable includes cover and placement information of all services configured by the RNC or the UE, and each service, that is, one radio access bearer (RAB) includes one radio access bearer information (RAB info) and radio bearer information. (RB info, Radio Bearer information).

The radio access bearer information includes its indication and corresponding placement information. The indication of the radio access bearer information is jointly marked by one RAB Identity and one CN domain identity (that is, one RAB Identity and one CN domain identity). It can cover the service of, i.e., one RAB. Different services, that is, services of different RABs, e.g., services of one PS domain and services of one CS, use the same RAB identity, and are in different CN domain identity (Packet Switched, packet domain). The domain of the service is represented by the PS domain, and the domain of the service in the CS domain (Circuit Sweitched, circuit domain) is represented by the CS domain. The deployment information corresponding to the radio access bearer information includes an MBMS session indication, a non-connection layer synchronization indication (NAS Synchronization Indicator), and a re-establishment timer.

The radio bearer information includes one or several radio bearer information, and the information of each radio bearer includes its label and corresponding deployment information. The indication of the radio bearer is uniquely designated by an RB Identity (radio bearer indication), and the placement information of the radio bearer includes a subflow number and an RB started / stopped indication.

In the "ESTABLISHED_RABS" variable, the RAB information and some RB information of each service must exist simultaneously. In other words, when the RNC or the UE configures a new service, the RAB information and the RB information corresponding to the service should be increased simultaneously with the variable; When the RNC or the UE deletes one service, it is necessary to delete RAB information and RB information corresponding to the service simultaneously from the variable. In other words, if all information of all RBs (indication of each RB and corresponding RB configuration information) of one service is lost, the RAB information of the service should be deleted from the variable.

In order to allow the RNC to more effectively configure the P-T-P radio bearer used for the selection service to the UE, in the current 3GPP standard, the selection service correlation protocol and message have been modified. Its main content is to no longer distinguish different selection services (ie different RABs) by the Radio Access Bearer Indication (RAB Identity), use the Selected Service ID, and select all services. All use the same RAB identity of 255.

However, in the selected service, in the "ESTABLISHED RABS" variable, which is synchronously updated and maintained by the RNC and the UE, each service corresponds to one RAB information and RB information, and each RAB information corresponds to one RAB Identity and CN domain identity, It is necessarily uniquely labeled jointly by one MBMS service identity. In other words, since the RAB Identity of the selection service is the same, each selection service (each RAB) is necessarily jointly marked by the RAB Identity, CN domain identity, and MBMS service identity.

Thus, during the configuration of a dedicated radio bearer of the selection service, i.e., a PTP radio bearer, when the RNC configures a dedicated radio bearer of several selection services, for example, several TV channel PTPs, for one UE, and the UE from the RNC Dedicated Radio Bearer When receiving the configured parameters, all the different MBMS Service Identity can be used to distinguish between different selection services. The configuration, relocation and deletion of the dedicated radio bearer of the selected service is different from the configuration of the dedicated radio bearer of other services.

However, in the current standard, the release of the dedicated radio bearer of the selected service still uses the same release method as that of the dedicated radio bearer of other services, so that all radio bearers (RB of each radio bearer) included in the service (RAB) when the identity and corresponding RB deployment information) are released, the RNC deletes all information of the RAB corresponding to the corresponding service in the "ESTABLISHED RABS" variable; In addition, the UE must delete all information of the RAB corresponding to the corresponding service in the "ESTABLISHED RABS" variable.

Problems that exist in the prior art include:

One). Although the optional service indicator has been added to the standard RAB info, it has not been specified for its use and deployment. In particular, how the optional service indicator and the radio access bearer correspond to each other during the configuration and relocation of the radio bearer. You do not specify it.

2). In the release of the radio access bearer of the selection service, the same method as other services cannot be used. Because, after all the dedicated radio bearers of one selected service, for example, a TV channel are released, all information of the RAB of the service is deleted, that is, all information of the RAB marked by the RAB identity and CN domain identity is deleted. This deletes all information of all selected services, for example all information of all TV channels.

(Technical Challenges)

The present invention has been devised to solve the above problems, and provides a method for configuring, relocating and deleting a radio access bearer of a selection service. The present invention provides a wireless network controller and a mobile terminal with a selection service indication, that is, multimedia of a selection service. The radio access bearer indication is replaced by a broadcast and multicast service indication (MBMS Service Identity) to implement configuration, relocation and deletion of the radio access bearer.

(Technical solution)

The present invention provides a method of configuring a dedicated radio access bearer for a selection service in order to solve the above problems, wherein a radio network controller is used to configure a radio access bearer of a selection service for a user equipment.

Step 1: The radio access bearer configuration information unit of the radio resource control message sent by the radio network controller to the user equipment, comprising one multimedia broadcast and multicast service indication and one radio access bearer indication; Among them, the multimedia broadcast and multicast service indicators of each selected service are floating; The radio access bearer beacon for each optional service is the same;

Step 2: the user equipment configures a radio access bearer of the corresponding selection service after receiving the radio resource control message; It consists of steps.

Further, the radio bearer indication and the fixed network service access point indication respectively correspond, and are fixed values already known to the user equipment and the network side.

The present invention also provides a method for relocating a dedicated radio access bearer for a selection service, wherein a radio network controller is used to relocate a radio access bearer of a selection service for a user equipment.

Step A: A multimedia broadcast and multicast service indication and one radio access bearer indication and a non-connection corresponding to the selected service to the radio access bearer relocation information unit of the radio resource control message sent by the radio network controller to the user equipment. A layer synchronization indication; Among them, the multimedia broadcast and multicast service indicators of each selection service are different and used to distinguish different selection services; The radio access bearer beacon for each optional service is the same;

Step B: the user equipment, after receiving the radio resource control message, performs a synchronization operation between the access layer and the connectionless layer of the corresponding selected service according to the multimedia broadcasting and multicast service indication and the connectionless synchronization indication; It consists of steps.

Further, the radio bearer beacon and the fixed network service access point beacon correspond respectively, and are fixed values already known to the user equipment and the network side.

The present invention also provides a method for deleting a radio access bearer of a selection service.

(a) When deleting all radio bearers of the same selection service, the user equipment corresponds to the selection service, which is uniquely marked by the domain indication of the core network, the radio access bearer indication and the multimedia broadcasting and multicast service indication. Find a wireless access bearer to be made;

(b) the user equipment deletes all information of the radio access bearer; It consists of steps.

Further, in the step (a), the radio network controller may also select a radio access bearer corresponding to the selection service, which is uniquely identified by the domain indication, the radio access bearer indication and the multimedia broadcasting and multicast service indication of the core network. Including finding; Accordingly,

In the step (b), the radio network controller also deletes all information of the radio access bearer; It consists of steps.

Further, the discovery of the radio bearer and the deletion of all the information thereof are carried out among the ESTABLISHED_RABS variables, and the ESTABLISHED_RABS variable is stored in the user equipment and the wireless network controller at the same time, and all the services configured by the wireless network controller or the user equipment. Includes cover and placement information.

Further, before step (a),

(a1) sending a radio resource control message between the radio network controller and the user equipment, the radio resource control message including radio bearer release information;

(a2) The user equipment and the radio network controller respectively release the radio bearer specified in the radio bearer release message after receiving the radio resource control message, that is, delete the indication of the designated radio bearer and corresponding configuration information. doing; It consists of steps.

Further, in step (a1), the radio resource control message sent by the radio network controller to the user equipment includes a cell update confirmation message or a radio bearer release message; The radio resource control message sent by the user equipment to the radio network controller includes a multimedia broadcast and multicast service change request message.

Further, in step (a1), the radio bearer release information may designate one or more radio bearer indications to correspond with the one or more radio bearers; Accordingly, in step (a2), the radio network controller and the user equipment release one or more radio bearers corresponding to the one or more radio bearer marks, respectively.

(Favorable effect)

In the method according to the present invention, in comparison with the prior art, the RNC can distinguish between different selection services using a selection service indication (i.e., MBMS Service Identity), and further configuration and relocation of radio access bearers of each UE. Can be done.

In addition, the method according to the present invention corresponds to the characteristics of the radio access bearer information of the selection service, so that each of the selection service can be selectively selected and deleted, and when releasing one selection service, all other selection services are removed. At the same time, there is an advantage not to delete.

1 is a perspective view of a protocol structure in which a MBMS and a bearer are separated in the prior art,

FIG. 2 is a perspective view of a layer relationship in which one or more services are stored in a variable "ESTABLISHED RABS" in the prior art,

3 is a conceptual diagram in which one same NSAPI ID and one same RAB ID are disposed in each P-T-P radio bearer according to the present invention.

4 is a conceptual diagram illustrating a configuration and relocation method of a radio access bearer according to the present invention;

5 is a conceptual diagram illustrating a process of deleting a radio access bearer of a selection service in an embodiment of the present invention.

Best Mode for Implementation of the Invention

Hereinafter, exemplary embodiments of the present invention described above will be described in detail with reference to preferred embodiments and the accompanying drawings.

The first and second embodiments will be described with reference to FIGS. 3 and 4. 3 is a conceptual diagram in which one same NSAPI ID and one same RAB ID are all disposed in each PTP radio bearer, and FIG. 4 is a conceptual diagram illustrating a configuration and relocation method of a radio access bearer according to the present invention. .

<First Embodiment>:

The method of configuring a radio access bearer for the selection service of the present invention comprises the following steps.

(1) When the RNC configures a radio access bearer used for a selection service for a UE, one selection service is included in the information unit RAB information for setup of an RRC (Radio Resource Control) message sent by the RNC to the UE. ID, that is, MBMS service identity and one RAB ID and other radio bearer configuration information corresponding to the selection service.

The selection service ID of each selection service, that is, the MBMS service identity, is all different and used to distinguish different selection services; The RAB ID of each selected service is the same and specifies the type of selected service, and does not specify any specific selected service. The RAB ID and the fixed network service access point indication (NSAPI) correspond to each other. Is a fixed value already known from;

The RRC message includes a radio bearer setup message (RADIO BEARER SETUP) or a message of a switch to other access network (HANDOVER TO UTRAN COMMAND); The information unit RAB information for setup of the RRC message includes one and the same PS domain mark.

The RNC distinguishes different selection services using different selection service IDs, that is, MBMS service identity, and no longer distinguishes using RAB IDs. The radio bearer configuration information in the information unit RAB information for setup also corresponds to each selection service indication, and each selection service (each mobile TV channel) in the information unit has the same PS domain indication and the same RAB ID, but the selection service ID That is, MBMS service identity should not be the same. If the same, the UE cannot configure the radio access bearer and the radio bearer after receiving the message.

(2) After receiving the message, the UE configures the radio access bearer of the selection service by the selection service ID disposed in the RAB info for setup, that is, the MBMS service identity and other radio bearer configuration information.

<< Second Embodiment >>:

The method for relocating a radio access bearer for the selection service of the present invention comprises the following steps.

(1) When the RNC relocates the radio access bearer used for the selection service for one UE, in the information unit RAB information to reconfigure of the RRC message sent by the RNC to the UE, one selection service ID, that is, the MBMS service identity and one And a NAS synchronization indicator corresponding to the RAB ID of the selected service and the selected service.

The selection service ID of each selection service, that is, the MBMS service identity, is all different and is used to distinguish different selection services; The RAB ID of each selected service is the same, and specifies the type of selected service, and does not specify any specific selected service, and the RAB mark and the fixed NSAPI mark correspond to each other, and the UE and the network side are known. Politics;

The RRC message includes a radio bearer configuration message (RADIO BEARER SETUP) or a radio bearer reconfiguration message (RADIO BEARER RECONFIGURATION) or a radio bearer release message (RADIO BEARER RELEASE); The information unit RAB information to reconfigure of the RRC message includes one and the same PS domain mark.

The RNC distinguishes different selection services using different selection service IDs, that is, MBMS service identity, and no longer distinguishes them using the RAB ID. The radio bearer configuration information in the information unit RAB information to reconfigure also corresponds to each selection service indication, and each selection service (each mobile TV channel) in the information unit has the same PS domain indication and the same RAB ID, but the selection service ID That is, MBMS service identity should not be the same. If the same, the UE cannot reconfigure the radio access bearer after receiving the message.

(2) After the UE receives the message, the UE performs synchronization between the access layer and the non-access layer of the selected service by the selection service ID disposed in the information unit RAB info for reconfiugrate, that is, the MBMS service identity and the NAS synchronization indicator. .

`` Third Embodiment '':

5 is a conceptual diagram illustrating a process of deleting a radio access bearer of a selection service in an embodiment of the present invention. The deletion method of the radio access bearer of the selection service is as follows.

RRC messages include messages sent by the radio network controller (RNC) to user equipment (UE), such as "CELL UPDATE CONFIRM" or "RADIO BEARER RELEASE" and the UE. Or "MBMS Modification request" sent to the RNC, and if the RRC message includes the information element (IE) "RB information to release", the UE or The RNC releases the radio bearer by an RB Identity (radio bearer indication) specified in the IE "RB information to release"; The IE "RB information to release" may include one or more RB identities and correspond to the one or more radio bearers.

When all radio bearers belonging to the same selection service are released, the RNC and the UE are radio access bearers of the selection service, which are uniquely marked by CN domain identity, RAB Identity and MBMS service identity in the stored "ESTABLISHED RABS" variable. To find out; Since all the information of the radio access bearer in the "ESTABLISHED RABS" variable is deleted, and the RB information has already been deleted, deleting all the information of one RAB deletes the RAB information, that is, the information of the RAB. The " ESTABLISHED RABS " variable includes an indication of all services configured by the radio network controller (RNC) or the mobile terminal (UE) and its arrangement information. The variable is maintained and updated by the RNC and the UE. "Synchronous" as used herein means that if one has updated the variable, the other must also proceed with the corresponding update, and is not limited to "must update at the same time." In practical applications, the variable may use other names, but the actuals remain unchanged.

In the above, the present invention has been illustrated and described with respect to specific embodiments, but the present invention is not limited only to the above-described embodiments, and those of ordinary skill in the art to which the present invention pertains are those of the technical idea of the present invention. Various changes can be made without departing from the spirit of the invention. However, all such changes should fall within the claims of the present invention.

The present invention relates to a data service in a mobile communication area, and can configure and rearrange radio access bearers of users, and select and delete selected services, respectively.

Claims (10)

A method in which a radio network controller is used to configure a radio access bearer of an optional service for a user facility, Step 1: The configuration information unit of the radio access bearer of the radio resource control message sent by the radio network controller to the user equipment, comprising one multimedia broadcast and multicast service indication and one radio access bearer indication; Among them, the multimedia broadcast and multicast service indicators of each selected service are floating; The radio access bearer beacon for each optional service is the same; Step 2: the user equipment receives the radio resource control message and then configures a radio access bearer of the corresponding selection service; A method of configuring a radio access bearer for a selection service, comprising the steps of: The method of claim 1, And the radio access bearer beacon and the fixed network service access point beacon correspond to each other, and are fixed values already known to the user equipment and the network side. A method in which a radio network controller is used to relocate a radio access bearer of an optional service for a user facility, Step A: One multimedia broadcast and multicast service beacon, one radio access bearer beacon, and no connection corresponding to the selected service to the radio access bearer relocation information unit of the radio resource control message sent by the radio network controller to the user equipment. A layer synchronization indication; Among them, the multimedia broadcast and multicast service indicators of each selection service are different and used to distinguish different selection services; The indication of the radio access bearer of each optional service is the same; Step B: the user equipment, after receiving the radio resource control message, performs a synchronization operation between the access layer and the connectionless layer of the corresponding selected service according to the multimedia broadcast and multicast service indication and the connectionless synchronization indication; A method for relocating a radio access bearer for a selection service, comprising the steps of: The method of claim 3, wherein And the radio access bearer beacon and the fixed network service access point beacon correspond to each other, and are fixed values already known to the user equipment and the network side. (a) If all radio bearers of the same selection service are deleted, the user equipment corresponds to the selection service, which is uniquely marked by the domain indication of the core network, the radio access bearer indication and the multimedia broadcast and multicast service indication. Find a radio access bearer; (b) the user equipment deletes all information of the radio access bearer; And deleting the radio access bearer for the selection service. The method of claim 5, In step (a), the radio network controller is also identified by the domain indication of the core network, the radio access bearer indication and the multimedia broadcasting and multicast service indication, and finds a radio access bearer corresponding to the selection service. Includes; In step (b), the radio network controller may also delete all information of the radio access bearer; And deleting the radio access bearer for the selection service. The method of claim 5, The discovery of the radio access bearer and the deletion of all the information thereof are performed among the ESTABLISHED RABS variables, and the ESTABLISHED RABS variables are stored at the same time in the user equipment and the wireless network controller, A method of deleting a radio access bearer for a selection service, comprising: a beacon and its placement information. The method of claim 5, Before step (a) above, (a1) a radio resource control message is sent between the radio network controller and the user equipment, the radio resource control message including radio bearer release information; (a2) The user equipment and the radio network controller respectively release the radio bearer specified in the radio bearer release message after receiving the radio resource control message, respectively, and delete the indication of the designated radio bearer and the corresponding deployment information. doing; And deleting the radio access bearer for the selection service. The method of claim 8, In step (a1), the radio resource control message sent by the radio network controller to the user equipment includes a cell update confirmation message or a radio bearer release message; The radio resource control message sent by the user equipment to the radio network controller includes a multimedia broadcast and multicast service change request message. 10. The method according to claim 8 or 9, In step (a1), the radio bearer release information designates one or more radio bearer indications to correspond to one or more radio bearers; In step (a2), the radio network controller and the user equipment release the one or more radio bearers corresponding to the one or more radio bearer indications, respectively. .

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