WO2020025113A1 - Gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre - Google Patents

Gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre Download PDF

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Publication number
WO2020025113A1
WO2020025113A1 PCT/EP2018/070767 EP2018070767W WO2020025113A1 WO 2020025113 A1 WO2020025113 A1 WO 2020025113A1 EP 2018070767 W EP2018070767 W EP 2018070767W WO 2020025113 A1 WO2020025113 A1 WO 2020025113A1
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WIPO (PCT)
Prior art keywords
talk
mission critical
target terminal
critical push
mobile radio
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PCT/EP2018/070767
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English (en)
Inventor
Peter Leis
Miikka Juhana POIKSELKÄ
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Nokia Solutions And Networks Oy
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Application filed by Nokia Solutions And Networks Oy filed Critical Nokia Solutions And Networks Oy
Priority to EP18749773.0A priority Critical patent/EP3831026A1/fr
Priority to PCT/EP2018/070767 priority patent/WO2020025113A1/fr
Publication of WO2020025113A1 publication Critical patent/WO2020025113A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/4061—Push-to services, e.g. push-to-talk or push-to-video
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1046—Call controllers; Call servers

Definitions

  • the present invention relates to media handling for interworking of mission critical push to talk and land mobile radio. More specifically, the present invention exemplarily relates to measures (including methods, apparatuses and computer program products) for realizing media handling for interworking of mission critical push to talk and land mobile radio.
  • the present specification generally relates to mission critical push to talk (MCPTT) using mobile communication networks.
  • MCPTT mission critical push to talk
  • 3GPP 3 rd Generation Partnership Project
  • LTE Long Term Evolution
  • EPC Evolved Packet Core
  • 3GPP Rel-15 and 3GPP Rel-16 3GPP Rel-16
  • LMR system UEs use different media descriptions (codecs) than media descriptions (codecs) used by UEs connected to the MCPTT system.
  • LMR system UEs use e.g. algebraic code- excited linear prediction (ACELP) codec, while for the 3GPP MCPTT system, codec usage is specified in TS 26.179 such that UE shall support adaptive multi-rate wideband (AMR-WB) codec and UE may support enhanced voice services (EVS) codec.
  • ACELP algebraic code- excited linear prediction
  • EVS enhanced voice services
  • a method of a mission critical push to talk server on a call originating side managing interworking of mission critical push to talk and land mobile radio comprising receiving, from a mission critical push to talk type originating terminal, a call request for establishing a call between said originating terminal and a target terminal, identifying a type of said target terminal, detecting at least one media description included in said call request, and handling said call request based on said type of said target terminal and said at least one media description.
  • a method of a mission critical push to talk type originating terminal comprising transmitting, to a mission critical push to talk server managing interworking of mission critical push to talk and land mobile radio, a call request for establishing a call between said originating terminal and a target terminal including at least one initial media description, receiving, from said mission critical push to talk server, a negative response including an indicator indicative of a type of said target terminal, modifying said call request based on said indicator, and re-transmitting said modified call request to said mission critical push to talk server.
  • an apparatus of a mission critical push to talk server on a call originating side managing interworking of mission critical push to talk and land mobile radio comprising at least one processor, at least one memory including computer program code, and at least one interface configured for communication with at least another apparatus, the at least one processor, with the at least one memory and the computer program code, being configured to cause the apparatus to perform receiving, from a mission critical push to talk type originating terminal, a call request for establishing a call between said originating terminal and a target terminal, identifying a type of said target terminal, detecting at least one media description included in said call request, and handling said call request based on said type of said target terminal and said at least one media description.
  • an apparatus of a mission critical push to talk type originating terminal comprising at least one processor, at least one memory including computer program code, and at least one interface configured for communication with at least another apparatus, the at least one processor, with the at least one memory and the computer program code, being configured to cause the apparatus to perform transmitting, to a mission critical push to talk server managing interworking of mission critical push to talk and land mobile radio, a call request for establishing a call between said originating terminal and a target terminal including at least one initial media description, receiving, from said mission critical push to talk server, a negative response including an indicator indicative of a type of said target terminal, modifying said call request based on said indicator, and re- transmitting said modified call request to said mission critical push to talk server.
  • an apparatus of a mission critical push to talk server on a call originating side managing interworking of mission critical push to talk and land mobile radio comprising receiving circuitry configured to receive, from a mission critical push to talk type originating terminal, a call request for establishing a call between said originating terminal and a target terminal, identifying circuitry configured to identify a type of said target terminal, detecting circuitry configured to detect at least one media description included in said call request, and handling circuitry configured to handle said call request based on said type of said target terminal and said at least one media description.
  • an apparatus of a mission critical push to talk type originating terminal comprising transmitting circuitry configured to transmit, to a mission critical push to talk server managing interworking of mission critical push to talk and land mobile radio, a call request for establishing a call between said originating terminal and a target terminal including at least one initial media description, receiving circuitry configured to receive, from said mission critical push to talk server, a negative response including an indicator indicative of a type of said target terminal, and modifying circuitry configured to modify said call request based on said indicator, wherein said transmitting circuitry is further configured to re-transmit said modified call request to said mission critical push to talk server.
  • a computer program product comprising computer-executable computer program code which, when the program is run on a computer (e.g. a computer of an apparatus according to any one of the aforementioned apparatus-related exemplary aspects of the present invention), is configured to cause the computer to carry out the method according to any one of the aforementioned method-related exemplary aspects of the present invention.
  • Such computer program product may comprise (or be embodied) a (tangible) computer-readable (storage) medium or the like on which the computer- executable computer program code is stored, and/or the program may be directly loadable into an internal memory of the computer or a processor thereof.
  • any one of the above aspects enables an efficient authorization of advanced media usage in MCPTT system and/or an efficient enablement of private call completion from MCPTT UE to LMR UE without the originating UE having to know prior call establishment whether the terminating UE is connected to a MCPTT system or a LMR system, i.e., without the originating UE having to know prior call establishment that (whether) it has to use LMR codec, to thereby solve at least part of the problems and drawbacks identified in relation to the prior art.
  • media handling for interworking of mission critical push to talk and land mobile radio More specifically, by way of exemplary embodiments of the present invention, there are provided measures and mechanisms for realizing media handling for interworking of mission critical push to talk and land mobile radio.
  • Figure 1 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention
  • FIG. 2 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention
  • FIG. 3 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention.
  • Figure 4 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention.
  • Figure 5 is a schematic diagram of a procedure according to exemplary embodiments of the present invention.
  • Figure 6 is a schematic diagram of a procedure according to exemplary embodiments of the present invention.
  • Figure 7 shows a schematic diagram of signaling sequences in the context of a call request issued by a MCPTT client
  • Figure 8 shows a schematic diagram of signaling sequences according to exemplary embodiments of the present invention
  • Figure 9 shows a schematic diagram of signaling sequences according to exemplary embodiments of the present invention
  • Figure 10 is a block diagram alternatively illustrating apparatuses according to exemplary embodiments of the present invention.
  • the following description of the present invention and its embodiments mainly refers to specifications being used as non-limiting examples for certain exemplary network configurations and deployments. Namely, the present invention and its embodiments are mainly described in relation to 3GPP specifications being used as non-limiting examples for certain exemplary network configurations and deployments.
  • communication in relation to media handling for interworking of mission critical push to talk and land mobile radio is used as a non-limiting example for the applicability of thus described exemplary embodiments.
  • the description of exemplary embodiments given herein specifically refers to terminology which is directly related thereto. Such terminology is only used in the context of the presented non-limiting examples, and does naturally not limit the invention in any way. Rather, any other communication or communication related system deployment, etc. may also be utilized as long as compliant with the features described herein.
  • the present invention is made considering on the circumstance that TS 23.283 describes that MCPTT system is connected to LMR system via interworking function (IWF), which is a connecting point between the MCPTT and the LMR.
  • IWF interworking function
  • Figure 7 shows a schematic diagram of signaling sequences in the context of a call request issued by a MCPTT client and in particular illustrates an MCPTT originated private call to an LMR system.
  • the MCPTT user at the MCPTT client initiates an MCPTT private call.
  • the MCPTT client sends an MCPTT private call request towards the MCPTT server ( Figure 7, 1.).
  • the MCPTT private call request contains the MCPTT ID corresponding to the LMR called user and a session description protocol (SDP) offer containing one or more media types.
  • SDP session description protocol
  • the MCPTT server serving the originating MCPTT user checks whether the MCPTT user at the MCPTT client is authorized to initiate the private call (Figure 7, 2.).
  • the MCPTT server also checks whether the MCPTT user at the MCPTT client is authorized to initiate a call in automatic commencement mode.
  • an IWF private call request is forwarded towards the involved IWF ( Figure 7, 3.), which in turn sends an IWF private call response to the MCPTT server ( Figure 7, 4.).
  • the MCPTT server transmits an MCPTT private call response to the MCPTT client ( Figure 7, 5.), and the Media plane for this call is established ( Figure 7, 6.).
  • the current specifications do not describe any media specific aspects of the private call request sent out from the MCPTT client and how it is handled in the MCPTT server.
  • the originating MCPTT client does not know when it has to include the LMR specific media description and when it has to include MCPTT specific media description, as it does not know whether the target is a MCPTT UE or a LMR UE.
  • LMR specific media description may be used for calls from MCPTT UE to MCPTT UE, which according the current 3GPP standards is not allowed, and further the terminating MCPTT UE may not support the LMR specific media description. This will lead to call failure.
  • the codecs (media descriptions) used in LMR system is/are different from those used in MCPTT system.
  • MCPTT servers need to be enabled to control the usage of media/codec based on whether the target is an MCPTT UE or a LMR UE.
  • the MCPTT server serving the originating MCPTT user when authorization for a private call is performed by the MCPTT server serving the originating MCPTT user, the following points are considered as well, namely, that the media description has to be according to the target system of the private call, and that private calls towards LMR are only allowed for an authorized MCPTT UE.
  • the MCPTT server serving the originating MCPTT user will authorize/handle the usage of media described in the originating session request such that
  • LMR system related codec e.g. ACELP codec
  • MCPTT system related codecs e.g. AMR-WB, EVS codec
  • negative response contains an indication about allowed media for specific target or an indication about the type (e.g. MCPTT, LMR) of the specific target.
  • FIG. 1 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention.
  • the apparatus may be a network node 10 such as an MCPTT server (managing interworking of mission critical push to talk and land mobile radio) comprising a receiving circuitry 11, an identifying circuitry 12, a detecting circuitry 13, and a handling circuitry 14.
  • the receiving circuitry 11 receives, from a mission critical push to talk type originating terminal, a call request for establishing a call between said originating terminal and a target terminal.
  • the identifying circuitry 12 identifies a type of said target terminal.
  • the detecting circuitry 13 detects at least one media description included in said call request.
  • the handling circuitry 14 handles said call request based on said type of said target terminal and said at least one media description.
  • Figure 5 is a schematic diagram of a procedure according to exemplary embodiments of the present invention.
  • the apparatus according to Figure 1 may perform the method of Figure 5 but is not limited to this method.
  • the method of Figure 5 may be performed by the apparatus of Figure 1 but is not limited to being performed by this apparatus.
  • Figure 2 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention.
  • Figure 2 illustrates a variation of the apparatus shown in Figure 1.
  • the apparatus according to Figure 2 may thus further comprise discriminating circuitry 21, checking circuitry 22, transmitting circuitry 23, and/or removing circuitry 24.
  • At least some of the functionalities of the apparatus shown in Figure 1 may be shared between two physically separate devices forming one operational entity. Therefore, the apparatus may be seen to depict the operational entity comprising one or more physically separate devices for executing at least some of the described processes.
  • exemplary details of the identifying operation (S52) are given, which are inherently independent from each other as such.
  • Such exemplary identifying operation (S52) may comprise an operation of discriminating whether said target terminal is a land mobile radio type target terminal or a mission critical push to talk type target terminal.
  • an exemplary method may comprise, if said target terminal is discriminated as said land mobile radio type target terminal, an operation of checking whether a user of said mission critical push to talk type originating terminal is authorized for call origination towards land mobile radio type terminals.
  • Such exemplary handling operation (S54) may comprise an operation of transmitting, if said user of said mission critical push to talk type originating terminal is not authorized for call origination towards land mobile radio type terminals, a call rejection to said mission critical push to talk type originating terminal.
  • checking/determining the authorization of the user of said mission critical push to talk type originating terminal may include checking a user profile of (the user of) said mission critical push to talk type originating terminal.
  • the user's profile may comprise a parameter related to authorization of calls towards land mobile radio type terminals.
  • a present user's profile may be extended to have such parameter.
  • the parameter related to authorization of calls towards land mobile radio type terminals may be denoted as "private calls to legacy allowed".
  • This parameter may be implemented in the Boolean type to take the values TRUE/FALSE, directly defining whether the user is allowed to make private calls towards LRM system or not. In such case, if the parameter is set to FALSE, then private call attempts towards LMR are rejected. On the other hands, if the parameter is set to TRUE, then private call attempts towards LMR are handled further. This logic may also be reversed.
  • the checking/determining is not limited to this implementation, and in this implementation, the way to provide the authorization information to the user's profile is not limited to the explained Boolean parameter.
  • Such exemplary handling operation (S54) may comprise, if said target terminal is discriminated as said land mobile radio type target terminal and no land mobile radio assigned media description is detected in said call request, an operation of transmitting, to said mission critical push to talk type originating terminal, a negative response including an indicator indicative of that said target terminal is discriminated as said land mobile radio type target terminal.
  • Such exemplary handling operation (S54) may comprise, if said target terminal is discriminated as said land mobile radio type target terminal and at least one land mobile radio assigned media description is detected in said call request, an operation of transmitting, to said land mobile radio type target terminal, said call request.
  • exemplary details of the handling operation (S54) are given, which are inherently independent from each other as such.
  • Such exemplary handling operation (S54) may comprise, if said target terminal is discriminated as said land mobile radio type target terminal and at least one land mobile radio assigned media description is detected in said call request and no mission critical push to talk assigned media description is detected in said call request, an operation of transmitting, to said land mobile radio type target terminal, said call request.
  • Such exemplary handling operation (S54) may further comprise, if said target terminal is discriminated as said land mobile radio type target terminal and at least one land mobile radio assigned media description is detected in said call request and at least one mission critical push to talk assigned media description is detected in said call request, an operation of removing said at least one mission critical push to talk assigned media description from said call request, and an operation of transmitting, to said land mobile radio type target terminal, said call request, or (alternatively to the operation of removing and the operation of transmitting), an operation of transmitting, to said mission critical push to talk type originating terminal, a negative response including an indicator indicative of that said target terminal is discriminated as said land mobile radio type target terminal.
  • Such exemplary handling operation (S54) may comprise, if said target terminal is discriminated as said mission critical push to talk type target terminal and at least one land mobile radio assigned media description is detected in said call request, an operation of transmitting, to said mission critical push to talk type originating terminal, a negative response including an indicator indicative of that said target terminal is discriminated as said mission critical push to talk type target terminal.
  • Such exemplary handling operation (S54) may comprise, if said target terminal is discriminated as said mission critical push to talk type target terminal and no land mobile radio assigned media description is detected in said call request and at least one mission critical push to talk assigned media description is detected in said call request, an operation of transmitting, to said mission critical push to talk type target terminal, said call request.
  • Such exemplary handling operation (S54) may comprise, if said target terminal is discriminated as said mission critical push to talk type target terminal and at least one land mobile radio assigned media description is detected in said call request and at least one mission critical push to talk assigned media description is detected in said call request, an operation of removing said at least one land mobile radio assigned media description from said call request, and an operation of transmitting, to said mission critical push to talk type target terminal, said call request, or (alternatively to said operation of removing and said operation of transmitting, an operation of transmitting, to said mission critical push to talk type originating terminal, a negative response including an indicator indicative of that said target terminal is discriminated as said mission critical push to talk type target terminal.
  • said land mobile radio assigned media description is an algebraic code-excited linear prediction codec.
  • said mission critical push to talk assigned media description is one of an adaptive multi-rate wideband codec and an enhanced voice services codec.
  • FIG. 3 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention.
  • the apparatus may be a terminal 30 such as an MCPTT terminal comprising a transmitting circuitry 31, a receiving circuitry 32, and a modifying circuitry 33.
  • the transmitting circuitry 31 transmits, to a mission critical push to talk server managing interworking of mission critical push to talk and land mobile radio, a call request for establishing a call between said originating terminal and a target terminal including at least one initial media description.
  • the receiving circuitry 32 receives, from said mission critical push to talk server, a negative response including an indicator indicative of a type of said target terminal.
  • the modifying circuitry 33 modifies said call request based on said indicator.
  • FIG. 6 is a schematic diagram of a procedure according to exemplary embodiments of the present invention.
  • the apparatus according to Figure 3 may perform the method of Figure 6 but is not limited to this method.
  • the method of Figure 6 may be performed by the apparatus of Figure 3 but is not limited to being performed by this apparatus.
  • a procedure (of a mission critical push to talk type originating terminal) comprises an operation of transmitting (S61), to a mission critical push to talk server managing interworking of mission critical push to talk and land mobile radio, a call request for establishing a call between said originating terminal and a target terminal including at least one initial media description, an operation of receiving (S62), from said mission critical push to talk server, a negative response including an indicator indicative of a type of said target terminal, an operation of modifying (S63) said call request based on said indicator, and an operation of re-transmitting (S64) said modified call request to said mission critical push to talk server.
  • Figure 4 is a block diagram illustrating an apparatus according to exemplary embodiments of the present invention.
  • Figure 4 illustrates a variation of the apparatus shown in Figure 3.
  • the apparatus according to Figure 4 may thus further comprise adapting circuitry 41 and/or selecting circuitry 42.
  • At least some of the functionalities of the apparatus shown in Figure 3 may be shared between two physically separate devices forming one operational entity. Therefore, the apparatus may be seen to depict the operational entity comprising one or more physically separate devices for executing at least some of the described processes.
  • Such exemplary modifying operation (S63) may comprise an operation of adapting, if said indicator is indicative of that said target terminal is discriminated as said land mobile radio type target terminal, said call request to comprise at least one land mobile radio assigned media description and no mission critical push to talk assigned media description.
  • exemplary details of the modifying operation (S63) are given, which are inherently independent from each other as such.
  • Such exemplary modifying operation (S63) may comprise an operation of adapting, if said indicator is indicative of that said target terminal is discriminated as said mission critical push to talk type target terminal, said call request to comprise at least one mission critical push to talk assigned media description and no land mobile radio assigned media description.
  • said land mobile radio assigned media description is an algebraic code-excited linear prediction codec.
  • said mission critical push to talk assigned media description is one of an adaptive multi-rate wideband codec and an enhanced voice services codec.
  • an exemplary method according to exemplary embodiments of the present invention may comprise an operation of selecting a default media description as said initial media description based on a characteristic of said call.
  • an algebraic code-excited linear prediction codec is selected as said initial media description.
  • said algebraic code-excited linear prediction codec is not selected as said initial media description.
  • said default media description is defined by a configuration parameter provided by means of at least one of a management object, a mission critical push to talk type originating terminal configuration, a user profile corresponding to a user of said mission critical push to talk type originating terminal, and a service profile.
  • an authorization procedure for private call requests performed by the MCPTT server is characterized in that, when the MCPTT server receives an INVITE request for a private call ( Figure 8, 1.; Figure 9, 1.), the MCPTT server determines whether the target of the private call is an UE connected to MCPTT system or UE connected to LMR system ( Figure 8, 2.; Figure 9, 2.). This can be found out by inspecting the URI of the invited party (terminating UE).
  • the resulting flow when the MCPTT client uses an LMR media description in a private call request despite the target is MCPTT UE is described with reference to Figure 8.
  • the resulting flow when the MCPTT client uses an MCPTT media description in a private call request despite the target is LMR UE is described with reference to Figure 9.
  • the MCPTT server may check the originating user's user profile ( Figure 9, 2.). Namely, it is possible that only for MCPTT users that are allowed to make private calls towards LMR system the MCPTT server continues with call establishment. Otherwise the private call request is rejected.
  • the MCPTT server checks ( Figure 9, 2.) whether the media description only contains MCPTT system compliant media formats (e.g. AMR-WB and EVS media description).
  • the MCPTT server sends a SIP 488 (Not Acceptable Here) response as an example for a negative response ( Figure 9, 3.).
  • the SIP 488 response contains an indicator that clearly identifies the terminating side as being an LMR target, so that originating side can subsequently send an (a new) INVITE ( Figure 9, 4.).
  • the MCPTT server only allows media description compliant for the MCPTT system, i.e. AMR-WB and EVS ( Figure 8, 2.). If other media description is included, then the MCPTT either removes those media descriptions or sends back a SIP 488 (Not Acceptable Here) response as an example for a negative response ( Figure 8, 3.). The negative response indicates that only the MCPTT compliant media descriptions are to be used for the call setup to the specific target. The originating side can subsequently send an (a new) INVITE ( Figure 8, 4.).
  • an MCPTT private call request is sent towards the terminating UE ( Figure 8, 6.; Figure 9, 6.), where the private call request includes the compliant codecs/media descriptions.
  • the terminating UE sends an IWF private call response to the MCPTT server ( Figure 8, 7.; Figure 9, 7.).
  • the MCPTT server transmits an IWF private call response to the MCPTT client ( Figure 8, 8.; Figure 9, 8.), and the Media plane for this call is established ( Figure 8, 9.; Figure 9, 9.).
  • a configuration parameter e.g. called "Mission Critical Default Voice Codec" is defined.
  • the parameter may be part of the management object, and/or MCPTT UE configuration, and/or the user profile, and/or the service profile. This would allow the service provider to guide MCPTT UEs which codec is offered in the initial request.
  • ACELP when the volume of MCPTT UE is low, then it might be preferable to set ACELP as a default codec whereas when MCPTT UE penetration exceeds legacy UEs connected to the system then default codec could be set to something else than ACELP codec. In so doing, shortest possible setup times can be ensured for private call requests (e.g. by the service provider).
  • the principles of the present invention as set out above can be applied as well in a scenario in which the originating terminal in a interworking situation of mission critical push to talk and land mobile radio is a land mobile radio type terminal.
  • the network entity may comprise further units that are necessary for its respective operation. However, a description of these units is omitted in this specification.
  • the arrangement of the functional blocks of the devices is not construed to limit the invention, and the functions may be performed by one block or further split into sub-blocks.
  • processor or corresponding circuitry potentially in cooperation with computer program code stored in the memory of the respective apparatus, is configured to cause the apparatus to perform at least the thus mentioned function.
  • function is to be construed to be equivalently implementable by specifically configured circuitry or means for performing the respective function (i.e. the expression "unit configured to” is construed to be equivalent to an expression such as "means for").
  • the apparatus (network node) 10' (corresponding to the network node 10) comprises a processor 101, a memory 102 and an interface 103, which are connected by a bus 104 or the like.
  • the apparatus (terminal) 30' (corresponding to the terminal 30) comprises a processor 105, a memory 106 and an interface 107, which are connected by a bus 108 or the like, and the apparatuses may be connected via link 109, respectively.
  • the apparatus (network node) 10' (corresponding to the network node 10) may further be connected to a target terminal (not shown) utilizing the interface 103. To this end, the target terminal may be equipped comparable to the illustrated terminal 30'.
  • the processor 101/105 and/or the interface 103/107 may also include a modem or the like to facilitate communication over a (hardwire or wireless) link, respectively.
  • the interface 103/107 may include a suitable transceiver coupled to one or more antennas or communication means for (hardwire or wireless) communications with the linked or connected device(s), respectively.
  • the interface 103/107 is generally configured to communicate with at least one other apparatus, i.e. the interface thereof.
  • the memory 102/106 may store respective programs assumed to include program instructions or computer program code that, when executed by the respective processor, enables the respective electronic device or apparatus to operate in accordance with the exemplary embodiments of the present invention.
  • the respective devices/apparatuses may represent means for performing respective operations and/or exhibiting respective functionalities, and/or the respective devices (and/or parts thereof) may have functions for performing respective operations and/or exhibiting respective functionalities.
  • processor or some other means
  • the processor is configured to perform some function
  • this is to be construed to be equivalent to a description stating that at least one processor, potentially in cooperation with computer program code stored in the memory of the respective apparatus, is configured to cause the apparatus to perform at least the thus mentioned function.
  • function is to be construed to be equivalently implementable by specifically configured means for performing the respective function (i.e. the expression "processor configured to [cause the apparatus to] perform xxx-ing” is construed to be equivalent to an expression such as "means for xxx-ing").
  • an apparatus representing the network node 10 comprises at least one processor 101, at least one memory 102 including computer program code, and at least one interface 103 configured for communication with at least another apparatus.
  • the processor i.e. the at least one processor 101, with the at least one memory 102 and the computer program code
  • the processor is configured to perform receiving, from a mission critical push to talk type originating terminal, a call request for establishing a call between said originating terminal and a target terminal (thus the apparatus comprising corresponding means for receiving), to perform identifying a type of said target terminal (thus the apparatus comprising corresponding means for identifying), to perform detecting at least one media description included in said call request (thus the apparatus comprising corresponding means for detecting), and to perform handling said call request based on said type of said target terminal and said at least one media description (thus the apparatus comprising corresponding means for handling).
  • an apparatus representing the terminal 30 comprises at least one processor 105, at least one memory 106 including computer program code, and at least one interface 107 configured for communication with at least another apparatus.
  • the processor i.e. the at least one processor 105, with the at least one memory 106 and the computer program code
  • the processor is configured to perform transmitting, to a mission critical push to talk server managing interworking of mission critical push to talk and land mobile radio, a call request for establishing a call between said originating terminal and a target terminal including at least one initial media description (thus the apparatus comprising corresponding means for transmitting), to perform receiving, from said mission critical push to talk server, a negative response including an indicator indicative of a type of said target terminal (thus the apparatus comprising corresponding means for receiving), to perform modifying said call request based on said indicator (thus the apparatus comprising corresponding means for modifying), and to perform re-transmitting said modified call request to said mission critical push to talk server (thus the apparatus comprising corresponding means for (re
  • any method step is suitable to be implemented as software or by hardware without changing the idea of the embodiments and its modification in terms of the functionality implemented;
  • CMOS Complementary MOS
  • BiMOS Bipolar MOS
  • BiCMOS Bipolar CMOS
  • ECL emitter Coupled Logic
  • TTL Transistor-Transistor Logic
  • ASIC Application Specific IC
  • FPGA Field-programmable Gate Arrays
  • CPLD Complex Programmable Logic Device
  • DSP Digital Signal Processor
  • - devices, units or means e.g. the above-defined network entity or network register, or any one of their respective units/means
  • an apparatus like the user equipment and the network entity /network register may be represented by a semiconductor chip, a chipset, or a (hardware) module comprising such chip or chipset; this, however, does not exclude the possibility that a functionality of an apparatus or module, instead of being hardware implemented, be implemented as software in a (software) module such as a computer program or a computer program product comprising executable software code portions for execution/being run on a processor;
  • a device may be regarded as an apparatus or as an assembly of more than one apparatus, whether functionally in cooperation with each other or functionally independently of each other but in a same device housing, for example.
  • respective functional blocks or elements according to above-described aspects can be implemented by any known means, either in hardware and/or software, respectively, if it is only adapted to perform the described functions of the respective parts.
  • the mentioned method steps can be realized in individual functional blocks or by individual devices, or one or more of the method steps can be realized in a single functional block or by a single device.
  • any method step is suitable to be implemented as software or by hardware without changing the idea of the present invention.
  • Devices and means can be implemented as individual devices, but this does not exclude that they are implemented in a distributed fashion throughout the system, as long as the functionality of the device is preserved. Such and similar principles are to be considered as known to a skilled person.
  • Software in the sense of the present description comprises software code as such comprising code means or portions or a computer program or a computer program product for performing the respective functions, as well as software (or a computer program or a computer program product) embodied on a tangible medium such as a computer-readable (storage) medium having stored thereon a respective data structure or code means/portions or embodied in a signal or in a chip, potentially during processing thereof.
  • the present invention also covers any conceivable combination of method steps and operations described above, and any conceivable combination of nodes, apparatuses, modules or elements described above, as long as the above-described concepts of methodology and structural arrangement are applicable.
  • Such measures exemplarily comprise (at a mission critical push to talk server managing interworking of mission critical push to talk and land mobile radio) receiving, from a mission critical push to talk type originating terminal, a call request for establishing a call between said originating terminal and a target terminal, identifying a type of said target terminal, detecting at least one media description included in said call request, and handling said call request based on said type of said target terminal and said at least one media description.
  • AMR-WB AMR wideband, adaptive multi-rate wideband

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des mesures de gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre. De telles mesures consistent à titre d'exemple (au niveau d'un serveur de messagerie vocale instantanée critique pour une mission sur un côté d'origine d'appel qui gère un interfonctionnement de messagerie instantanée critique pour une mission et de radio mobile terrestre) à recevoir, à partir d'un terminal d'origine de messagerie vocale instantanée critique pour une mission, une requête d'appel visant à établir un appel entre ledit terminal d'origine et un terminal cible, à identifier un type dudit terminal cible, à détecter au moins une description de support comprise dans ladite requête d'appel, et à gérer ladite requête d'appel sur la base dudit type dudit terminal cible et de ladite au moins une description de support. La gestion de ladite requête d'appel peut en outre être basée sur le fait que le client/l'utilisateur de messagerie vocale critique pour une mission est autorisé pour l'appel.
PCT/EP2018/070767 2018-07-31 2018-07-31 Gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre WO2020025113A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18749773.0A EP3831026A1 (fr) 2018-07-31 2018-07-31 Gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre
PCT/EP2018/070767 WO2020025113A1 (fr) 2018-07-31 2018-07-31 Gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/070767 WO2020025113A1 (fr) 2018-07-31 2018-07-31 Gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre

Publications (1)

Publication Number Publication Date
WO2020025113A1 true WO2020025113A1 (fr) 2020-02-06

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PCT/EP2018/070767 WO2020025113A1 (fr) 2018-07-31 2018-07-31 Gestion de supports pour l'interfonctionnement d'une messagerie vocale instantanée critique pour une mission et d'une radio mobile terrestre

Country Status (2)

Country Link
EP (1) EP3831026A1 (fr)
WO (1) WO2020025113A1 (fr)

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; Numbering, addressing and identification (Release 15)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 23.003, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. CT WG4, no. V15.3.0, 27 March 2018 (2018-03-27), pages 1 - 118, XP051450507 *
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Functional architecture and information flows to support Mission Critical Push To Talk (MCPTT); Stage 2 (Release 15)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 23.379, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG6, no. V15.4.0, 22 June 2018 (2018-06-22), pages 1 - 198, XP051473645 *
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Mission Critical Communication Interworking with Land Mobile Radio Systems; Stage 2 (Release 15)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 23.283, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG6, no. V15.1.0, 22 June 2018 (2018-06-22), pages 1 - 124, XP051473640 *

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