摘要:
Techniques for managing multiple ICS sessions in an IMS network are described. In one method, a MSC server detects that a user terminal has been transferred from a first access network to a second access network and, in response, sends a message to an SCC AS, the message indicating transfer of the user terminal. The MSC server receives, in response, one or more requests for MSC server-assisted mid-call feature services for the user terminal, and assigns transaction identifiers to one or more sessions held for the user terminal or to one or more conference participants corresponding to the user terminal. Corresponding techniques carried out at an SCC AS are also described.
摘要:
A communication network comprises a packet switched domain associated with a packet switched capable radio access network and supports an Internet Protocol Multimedia Subsystem voice session via the packet switched capable radio access network. The terminal supports an Internet Protocol Multimedia Subsystem voice session via the packet switched capable radio access network and an Internet Protocol Multimedia Subsystem emergency voice session via the packet switched capable radio access network. A method is executed by a control node of the packet switched domain and comprises sending instruction information to the terminal. The instruction information instructs the terminal to execute an Internet Protocol Multimedia Subsystem voice session via the packet switched capable radio access network without regard to whether the communication network has indicated support of an emergency session related data transmission via the packet switched capable radio access network and the packet switched domain.
摘要:
A method of providing an availability of an execution of an Internet Protocol Multimedia Subsystem voice session via a packet switched capable radio access network of an Internet Protocol Multimedia Subsystem based communication network (100) with a terminal (102) is described. The communication network (100) comprises a packet switched domain associated with the packet switched capable radio access network. The communication network (100) supports an Internet Protocol Multimedia Subsystem voice session via the packet switched capable radio access network. The terminal (102) supports an Internet Protocol Multimedia Subsystem voice session via the packet switched capable radio access network and an Internet Protocol Multimedia Subsystem emergency voice session via the packet switched capable radio access network. The method is executed by a control node (112) of the packet switched domain (106). The method comprises sending (264) instruction information to the terminal (102). The instruction information instructs the terminal (102) to execute an Internet Protocol Multimedia Subsystem voice session via the packet switched capable radio access network without regard to whether the communication network (100) having indicated support of an emergency session related data transmission via the packet switched capable radio access network and the packet switched domain (106). The latter enable an improved usage of capabilities of the terminal (102).
摘要:
Techniques for managing multiple ICS sessions in an IMS network are described. In one method, a MSC server detects that a user terminal has been transferred from a first access network to a second access network and, in response, sends a message to an SCC AS, the message indicating transfer of the user terminal. The MSC server receives, in response, one or more requests for MSC server-assisted mid-call feature services for the user terminal, and assigns transaction identifiers to one or more sessions held for the user terminal or to one or more conference participants corresponding to the user terminal. Corresponding techniques carried out at an SCC AS are also described.
摘要:
The invention relates to a method for establishing a push-to-talk-(Ptt) communication link between two Ptt devices (1,2), in which the data of different types, such as voice data (Sp), audio data (A), video data (V) etc., is transmitted between the Ptt devices (1,2). The first Ptt device (1) transmits a Ptt link request, and subsequently a communication link is established for at least one selection of said different types of data via a communication channel (F1, NF) according to a communication protocol. According to the invention, the Ptt link request contains priority information which enables the data types to be allocated a transmission priority, and the communication protocol only authorizes the communication channel (F1, NF) to be established if the second Ptt-device (2) is available for the data type or for the data types having the highest transmission priority. The transmission of one data type, which has a lower transmission priority, by means of said communication channel (F1, NF) is only authorized if the second Ptt-device (2) is available for said data type, and the second Ptt-device (2) is also available for all data types with a higher transmission priority.
摘要:
An improved method for re-activating a terminated group session. A server responsible for controlling the connection stores associated participant information identifying clients that participated or were intended to participate the connection. This associated participant information is provided to the client when a negative response to the request for re-joining the connection needs to be given. The client can then re-activate the communication by re-initing the connection. The roles and responsibilities of the continued connection are more consistent and still, the task of storing the information for the continued connection takes place in the element where it is most appropriately done.
摘要:
According to an embodiment of the present invention there is provided a method of enabling Single Radio Voice Call Continuity, SRVCC, access transfer for an emergency call back IP Multimedia Subsystem, IMS, session to a user equipment, UE. The method comprises including a session continuity function in a signalling path of a request for establishment of a call back session intended for the UE, and if access transfer of the call back session from a packet switched access to a circuit switched access is required, implementing SRVCC access transfer of the call back session using the session continuity function.
摘要:
A network can handle access attempts by a mix of user equipments (UEs) that do and do not support multiple packet data network connections and do and do not support Internet Protocol version 6 (IPv6) and access attempts from networks that do and do not support multiple PDN connections. A method of operating a Trusted Non-3GPP Access network with a 3GPP network involves an authentication, authorization, and accounting (AAA) proxy in the Trusted Non-3GPP Access network and a UE that supports multiple PDN connections, with the AAA proxy sending an indication to the UE that the network supports multiple PDN connections.
摘要:
During a registration procedure by a User Equipment (UE) via a Proxy Call Session Control Function (P-CSCF) node and a Serving Call Session Control Function (S-CSCF) node, the S-CSCF node provides a policy indicator in a response message to a register request message. The policy indicator enables subsequent operation of the node to be controlled according to whether or not a registered UE has an associated policy. As such, delays (such as delays associated with retrieving an associated policy) are only experienced by UEs that have previously been determined as having such an associated policy, rather than all UEs being affected in the same way.
摘要:
A method and apparatus is described in which a server providing group communication maintains document of active group sessions. The group communication server may provide a search capability to identify active group sessions. Alternatively, the group communication server uses a caching entity to provide the search capability to identify active group sessions corresponding to a search request from a user.