Abstract: Provided are a video preloading method and apparatus, a device, and a medium. The method includes: in response to determining that a length of a buffered video reaches a first numerical value, creating and executing a preloading task, where the buffered video is a current video that is buffered and is to be played, and the preloading task is used for preloading a subsequent video; and in an execution process of the preloading task, in response to determining that the length of the buffered video is less than or equal to a second numerical value, cancelling the preloading task, where the second numerical value is less than the first numerical value.

Abstract: Various exemplary embodiments relate to a method of determining by a network node whether a session establishment request is for a subscriber of a home network. The method may include: defining a home network identity including a network identifier and an emergency access point name (APN); receiving a session establishment request; comparing a called station ID of the session establishment request with the emergency APN; comparing a subscription ID of the session establishment request with the network identifier; and if either the called station ID matches an emergency APN or the subscription ID matches a network identifier: determining that the subscriber is a subscriber of the home network, and fulfilling the session establishment request. Various exemplary embodiments relate to a system for determining the home network of a subscriber. The system may include a policy and charging rules node (PCRN) configured to process a session establishment request.

Abstract: Various exemplary embodiments relate to a method performed by a node for creating a virtual IP-CAN session, the method including: receiving, at the network node, a S9 message; creating a S9 session; creating a virtual IP-CAN session associated with the S9 session; persisting the S9 session; and transmitting an answer S9 message.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving, at the network node, an indication of an event from a network monitor, the event associated with a network element; identifying an applicable rule of a plurality of rules based on the event, the applicable rule specifying at least one action; initiating performance of the at least one action with respect to at least one session associated with the network element. Various embodiments additionally include one or more of the following: identifying a group of sessions associated with the network element; and wherein the steps of identifying an applicable rule and initiating performance of the at least one action are performed for each session of the group of sessions.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: determining by the network device that an S9 session should be audited; determining that the S9 session is a suspect session; transmitting an S9 message to a partner device, wherein the S9 message includes an innocuous instruction; receiving, at the network device, a response message from the partner device; determining, based on the response message, whether the suspect session is orphaned; and if the suspect session is orphaned, removing an S9 session record associated with the suspect session.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving, at a policy and charging rules node from a first requesting device, a first message including a first set of information regarding an application request; generating a set of PCC rules for fulfilling the application request based on the first set of information; determining whether the PCRN should wait for a period of time for at least one PCC rule to receive a second message including a second set of information regarding the application request; and if the PCRN should wait for the period of time: waiting for the period of time to receive a second message including a second set of information regarding the application request, determining, after the time has elapsed, whether the second message has arrived, and if the second message has not arrived, initiating a cleanup procedure.

Abstract: Various exemplary embodiments relate to method of generating PCC rules for managing packet traffic across a network. The method may include: receiving a request message for PCC rules from a requesting network component, authorizing the first requested bandwidth for a first traffic mapping; authorizing a third bandwidth for at least a second traffic mapping wherein the third authorized bandwidth is less than or equal to a second requested bandwidth minus the first requested bandwidth; generating a first PCC rule comprising: a service flow corresponding to the first traffic mapping and the first authorized bandwidth; and generating a second PCC rule comprising: a service flow corresponding to the second traffic mapping and the third authorized bandwidth. Various exemplary embodiments relate to a Policy and Control Rules Node (PCRN) for generating PCC rules. The PCRN may include an interface, service flow extractor, policy engine, rule generator, rules storage and rules manager.

Abstract: The invention is directed to providing a method and apparatus for authorizing Quality of Service (QoS) at a Policy and Charging Rules Function (PCRF) node in response to receiving a service request for a subscriber having a requested QoS, a QoS Negotiation Attribute Value Pair (AVP) and a QoS Upgrade AVP such that the QoS Negotiation AVP takes precedence over the QoS Upgrade AVP.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: determining by the network device that an S9 session should be audited; determining that the S9 session is a suspect session; transmitting an S9 message to a partner device, wherein the S9 message includes an innocuous instruction; receiving, at the network device, a response message from the partner device; determining, based on the response message, whether the suspect session is orphaned; and if the suspect session is orphaned, removing an S9 session record associated with the suspect session.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN) for managing a session for a roaming subscriber. The method may include: defining a roaming agreement associated with at least one roaming partner and including at least one limitation; receiving a session establishment request; extracting a subscription identifier; determining an active roaming partner by comparing the subscription identifier to the roaming partner profile; selecting the roaming agreement including the active roaming partner; and enforcing the at least one limitation when processing the session establishment request.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: determining by the network device that an S9 session should be audited; determining that the S9 session is a suspect session; transmitting an S9 message to a partner device, wherein the S9 message includes an innocuous instruction; receiving, at the network device, a response message from the partner device; determining, based on the response message, whether the suspect session is orphaned; and if the suspect session is orphaned, removing an S9 session record associated with the suspect session.

Abstract: Various exemplary embodiments relate to a method performed by a node for creating a virtual IP-CAN session, the method including: receiving, at the network node, a S9 message; creating a S9 session; creating a virtual IP-CAN session associated with the S9 session; persisting the S9 session; and transmitting an answer S9 message.

Abstract: Various exemplary embodiments relate to a method performed by a network node for generating a S9 session ID, the method including: receiving, at the network node, an attachment request from a user equipment (UE); creating a DIAMETER session ID; attaching a timestamp and UE ID to the DIAMETER session ID resulting in a S9 session ID; and initiating a S9 session with a home PCRN using the S9 session ID.

Abstract: Various exemplary embodiments relate to a method of determining by a network node whether a session establishment request is for a subscriber of a home network. The method may include: defining a home network identity including a network identifier and an emergency access point name (APN); receiving a session establishment request; comparing a called station ID of the session establishment request with the emergency APN; comparing a subscription ID of the session establishment request with the network identifier; and if either the called station ID matches an emergency APN or the subscription ID matches a network identifier: determining that the subscriber is a subscriber of the home network, and fulfilling the session establishment request. Various exemplary embodiments relate to a system for determining the home network of a subscriber. The system may include a policy and charging rules node (PCRN) configured to process a session establishment request.

Abstract: Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN) for managing a session for a roaming subscriber. The method may include: defining a roaming agreement associated with at least one roaming partner and including at least one limitation; receiving a session establishment request; extracting a subscription identifier; determining an active roaming partner by comparing the subscription identifier to the roaming partner profile; selecting the roaming agreement including the active roaming partner; and enforcing the at least one limitation when processing the session establishment request.

Abstract: Various exemplary embodiments relate to a method of generating a Policy and Control Charging (PCC) rule for managing packet traffic across a network. The method may include: receiving a request message for PCC rules from a requesting network component; authorizing a set of QoS information based on the requested set of QoS information; generating a PCC rule; and transmitting the PCC rule to an enforcing network component. The request message may include a requested set of QoS information and multiple traffic mappings each describing a flow of packets transmitted across the network. The PCC rule may include the authorized set of QoS information and multiple flow descriptions corresponding to each traffic mapping. The PCRN may include: a first interface that receives a request message, a policy engine, a rule generator, and a second interface that transmits the PCC rule to an enforcing network component.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving, at the network node, an indication of an event from a network monitor, the event associated with a subscriber; identifying, based on the event, an applicable rule of a plurality of rules, the applicable rule specifying at least one action; and initiating performance of the at least one action with respect to at least one session associated with the subscriber. Various embodiments additionally include one or more of the following: identifying a group of sessions associated with the subscriber, wherein the steps of identifying an applicable rule and initiating performance of the at least one action are performed for each session of the group of sessions.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving, at the network node, an indication of an event from a network monitor, the event associated with a network element; identifying an applicable rule of a plurality of rules based on the event, the applicable rule specifying at least one action; initiating performance of the at least one action with respect to at least one session associated with the network element. Various embodiments additionally include one or more of the following: identifying a group of sessions associated with the network element; and wherein the steps of identifying an applicable rule and initiating performance of the at least one action are performed for each session of the group of sessions.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following; receiving, at the session management node, an event notification; retrieving an object associated with the event, wherein the object includes an authorized value for a particular attribute; determining, based on the event notification, that the object should be temporarily modified; determining, based on the event notification, an adjusted value for the particular attribute; inserting the adjusted value for the particular attribute into the object without modifying the authorized value for a particular attribute; and reauthorizing at least one session based on the object.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: determining by the network device that an S9 session should be audited; determining that the S9 session is a suspect session; transmitting an S9 message to a partner device, wherein the S9 message includes an innocuous instruction; receiving, at the network device, a response message from the partner device; determining, based on the response message, whether the suspect session is orphaned; and if the suspect session is orphaned, removing an S9 session record associated with the suspect session.