Patent application number | Description | Published |
20110194437 | ASSISTED STATE TRANSITION OF A USER EQUIPMENT (UE) FOR DELAY SENSITIVE APPLICATIONS WITHIN A WIRELESS COMMUNNICATIONS SYSTEM - In an embodiment, an application server receives a call message, from an originating user equipment (UE), that is configured to request initiation of a communication session, to be arbitrated by the application server, between the originating UE and at least one target UE. The application server selectively sends, in response to the call message, dummy data to a serving access network of a given UE associated with the communication session in order to facilitate a transition of the given UE to a dedicated-channel state. For example, the application server can selectively send the dummy data based on a size of the call message and/or based on a type of the communication session. | 08-11-2011 |
20120093145 | SUPPORTING A MULTIMEDIA APPLICATION BASED ON NETWORK ZONE RECOGNITION - In an embodiment, a user equipment (UE) determines that a current serving network is associated with a network support zone of a given type, wherein network support zones of different types are characterized by different levels of support for a multimedia client application configured to manage server-arbitrated communication sessions at the UE. The UE loads zone-specific network procedures for supporting the multimedia client application within the network support zone of the given type, and then executes the zone-specific network procedures at the UE. In another embodiment, an application server determines that the current serving network of the UE is associated with the network support zone of the given type. The application server selects zone-specific network parameters and/or features based on the determination, and then interacts with the multimedia client application within the network support zone of the given type with the selected zone-specific network parameters and/or features. | 04-19-2012 |
20120131663 | TRANSMITTING KEEP-ALIVE PACKETS ON BEHALF OF A MOBILE COMMUNICATIONS DEVICE WITHIN A WIRELESS COMMUNICATIONS SYSTEM - In an embodiment, a mobile communications device (MCD) is positioned within an internal network that is separated from an external network by network address translation (NAT) and/or a firewall. The MCD establishes settings with the NAT and/or firewall by which the MCD can be contacted through from the external network. The settings are configured to be disabled by the NAT and/or firewall after a threshold period of traffic inactivity. An application server receives information associated with the settings, and instructs an assisting application server (AAS) within the internal network to transmit keep-alive packets on behalf of the MCD so as to maintain the settings for the MCD. The AAS receives the instructions from the application server, and instructs an assisting wireless communications device (WCD) within the internal network to transmit keep-alive packets on behalf of the MCD. The WCD then transmits the keep-alive packets in accordance with the instructions. | 05-24-2012 |
20120290686 | EXCHANGING DATA BETWEEN A USER EQUIPMENT AND AN APPLICATION SERVER - A user equipment (UE) and an application server exchange data in a wireless communications network. The UE is configured to connect to both a wireless local area network (WLAN) and a wireless wide area network (WWAN). The application server is positioned within the WWAN behind a WWAN firewall. The WLAN includes a WLAN network address translation (NAT) component and firewall such that the UE and the application server do not have a persistent data connection over the WLAN. In an embodiment, the application server can open a WWAN firewall to permit uploads from the UE over the WLAN. In another embodiment, the UE can open the WLAN firewall and/or NAT to permit downloads from the application server over the WLAN. In another embodiment, the application server or UE can upload files to a server outside the WLAN and WWAN firewalls and send a link to the uploaded files for retrieval. | 11-15-2012 |
20120294199 | GROUP COMMUNICATION SESSIONS THAT ARE AT LEAST PARTIALLY SUPPORTED OVER PERSONAL AREA NETWORKS IN A WIRELESS COMMUNICATIONS SYSTEM - In an embodiment, an application server receives a request to initiate a group communication session (GCS) over a Wireless Wide Area Network (WWAN) with a communication group. The application server obtains location information of a set of devices participating in the GCS and determines that the GCS can be supported between the set of devices via a Personal Area Network (PAN), after which the application server transitions support for the GCS from the WWAN to the PAN. In another embodiment, an originator begins a periodic broadcast of a local PAN signal announcing the GCS after failing to set-up the GCS via the WWAN. Target device(s) in the communication group receive the local PAN signal, determine not to transmit their own local PAN signal and then convey a session acceptance message to the originator. The GCS is then established between the target device(s) and the originator over the PAN. | 11-22-2012 |
20120295617 | SELECTIVELY EXTENDING A WAITING PERIOD BEFORE AN ORIGINATING USER EQUIPMENT FAILS A CALL BASED ON NETWORK INFORMATION OF ONE OR MORE TARGET USER EQUIPMENTS - In an embodiment, network information associated with a plurality of user equipments (UEs) is determined by an application server. For example, the network information can include information indicative of whether the respective UEs are connected to fast-response networks or slow-response networks. The application server receives a request from an originating UE to initiate a communication session to at least one target UE among the plurality of UEs. The application server selectively requests the originating UE to extend a wait timer based at least in part upon the determined network information for the at least one target UE, wherein expiration of the wait timer prompts the originating UE to fail the communication session. The originating UE receives the extension request from the application server and extends the wait timer such that call failure due to wait timer expiration is delayed and/or avoided. | 11-22-2012 |
20130053029 | SUPPORTING SERVICES TO A ROAMING USER EQUIPMENT WITHIN A LOCAL NETWORK OF A WIRELESS COMMUNICATIONS SYSTEM - In an embodiment, an SGSN determines whether a local network is configured to support a given service locally. The SGSN receives an Activate PDP Context Request message associated with the given service from a roaming UE and selectively terminates a PDP for the given service within the local network based at least in part upon the determination. In another embodiment, an MME determines whether the local network is configured to support the given service locally. The MME receives a PDN Connectivity Request message associated with the given service from the roaming UE, and selectively terminates an EPS Bearer for the given service within the local network based at least in part upon the determination. In the respective embodiments, the SGSN and/or the MME are configured to ignore HLR settings for PDP termination and/or EPS Bearer termination, respectively, of the UE. | 02-28-2013 |
20130094638 | Apparatus and Method For Performing Precognitive Lawful Intercept In Group Calls - A method and apparatus for performing lawful intercept in a group call is described. A group call for is established and at least one target member device of the group call is identified as corresponding to a subject to be tracked. Call content for communications corresponding to the call is then tracked from the beginning of the call. A query is presented to a law enforcement authority to determine whether the law enforcement authority wishes to receive call data collected before the target joined the call or after the target leaves the call. | 04-18-2013 |
20130100819 | SELECTIVELY ACQUIRING AND ADVERTISING A CONNECTION BETWEEN A USER EQUIPMENT AND A WIRELESS LOCAL AREA NETWORK - In an embodiment, a UE transmits information regarding its local environment to a WWAN-based application server. The application server generates a list of WLAN APs that are in a vicinity of the UE based on the local environment information. The application server sends, to the UE, WLAN AP selection assistance information (SAI) that includes at least the list of WLAN APs and (ii) navigation information by which the UE can navigate to the listed WLAN APs. The UE receives the SAI and provides a user of the UE with directions to a selected WLAN AP based on the SAI. In another embodiment, a communication entity advertises a UE's connection to a WLAN AP along with information related to an estimated duration of the UE's connection. Another communication entity receives the connection advertisement and determines whether to transmit data to the UE based on the advertisement. | 04-25-2013 |
20130121133 | GROUP COMMUNICATIONS WITH MIXED CASTING SERVICES - The disclosure is directed to group communications in a mixed casting services wireless communication system. An embodiment detects a loss of multicast coverage at a user equipment (UE), notifies a server of the loss of multicast coverage, wherein the server is configured to provide a desired multicast communication, and requests that communications related to the desired multicast communication be conducted on a unicast service using application layer signaling independent of link layer signaling. | 05-16-2013 |
20130121226 | GROUP COMMUNICATIONS OVER EVOLVED MULTIMEDIA BROADCAST/MULTICAST SERVICES - The disclosure is directed to group communications over evolved multimedia broadcast/multicast services (E-MBMS). An embodiment identifies a schedule for an indicator on a broadcast/multicast medium of a first multicast media on a multicast flow, wherein the indicator is configured to identify a location of data on the broadcast/multicast medium and to identify a presence of the data on the multicast flow, binds application layer paging, an application layer wake up mechanism, or a power saving mechanism to the schedule for the indicator on the multicast flow, wakes from a sleep mode to monitor the indicator to determine availability of the first multicast media based on the indicator, tunes to the first multicast media if the first multicast media is available, and returns to the sleep mode, if the first multicast media is not available. | 05-16-2013 |
20130121313 | ADJUSTING A BUNDLING FACTOR FOR A COMMUNICATION SESSION BASED ON WHETHER AN ACCESS NETWORK SUPPORTS HEADER COMPRESSION AND DYNAMICALLY SETTING A DE-JITTER BUFFER SIZE BASED ON A BUNDLING FACTOR - In an embodiment, a user equipment (UE) determines to originate a communication session, and the UE further determines whether an access network serving the UE supports header compression. Based on the header compression determination, the UE establishes on a given bundling factor (BF). The UE transmits a first set of media packets to a server during the communication session, the first set of media packets each including a first number of media frames based on the given BF. The server determines target BF(s) for target UE(s) and determines whether to modify the given BF based on the target BF(s). Based on these determinations, the server transmits a second set of media packets either unmodified from the first stream of data packets, or modified based on the target BF(s). The target UE(s) receive the second stream of data packets and set a de-jitter buffer size based on the associated BF. | 05-16-2013 |
20130121480 | APPARATUS AND METHOD FOR PERFORMING LAWFUL INTERCEPT IN GROUP CALLS - An apparatus and method for performing lawful intercept in group calls is described herein. When a group call is established having a monitoring target as a member, a monitoring component obtains signaling, location, and data related to the monitoring target, correlates this information, and provides it to a call intercept component. | 05-16-2013 |
20130136049 | GROUP COMMUNICATIONS OVER EVOLVED MULTIMEDIA BROADCAST/MULTICAST SERVICES - The disclosure relates to group communications over multimedia broadcast-multicast services (MBMS). An embodiment of the disclosure establishes a first multicast flow and assigns a second multicast flow, wherein the second multicast flow contains signaling and media for at least one group call, and wherein the first multicast flow is configured to send information regarding activity on the second multicast flow. An embodiment of the disclosure monitors a first multicast flow for an announce message regarding a first group call, and upon receipt of the announce message, switches to a second multicast flow that contains signaling and media for the first group call. | 05-30-2013 |
20130170352 | APPLICATION LAYER ACCESS CHANNEL CONGESTION AVOIDANCE IN GROUP COMMUNICATIONS OVER BROADCAST/MULTICAST SERVICES - The disclosure is directed to prioritizing call announce response in a broadcast/multicast communication system. An embodiment establishes a first priority for response based on assigning each user equipment (UE) a first random delay for response to a first call announce, responds to the first call announce using the first random delay, and determines a second priority for response to a subsequent call announce based on an elapsed time that each UE is present in a multicast area. | 07-04-2013 |
20130170357 | APPLICATION-SERVER-ASSISTED PREEMPTIVE MULTICAST BEARER ESTABLISHMENT FOR REAL-TIME LOW-LATENCY APPLICATIONS - The disclosure is directed to preemptively establishing a multicast bearer. An embodiment determines whether adding a multicast session to a plurality of multicast bearers will exceed a high bandwidth threshold, requests setup of a new multicast bearer if adding the multicast session will exceed the high bandwidth threshold, and hosts the multicast session on an available one of the plurality of multicast bearers or the new multicast bearer. | 07-04-2013 |
20130170424 | SELECTIVELY MULTIPLEXING COMMUNICATION STREAMS - In an embodiment, a network device obtains a plurality of data packets that are each associated with one of a plurality of different streams, wherein each of the plurality of obtained data packets includes a header portion with stream-specific routing information. The network device strips the stream-specific routing information from the plurality of obtained data packets to produce a plurality of stream-specific payload portions, which are merged into a shared payload portion of a stream-multiplexed data packet that includes common routing information for the plurality of streams in a common header portion. The network device transmits the stream-multiplexed packet to a target device, and the target device determines whether any of the plurality of different streams are relevant to the target UE based on stream-mapping information contained in the stream-multiplexed packet, and selectively decodes and processes the stream-specific payload portions corresponding based on the determination. | 07-04-2013 |
20130170450 | WIRELESS BROADCAST/MULTICAST SERVICE CAPACITY OVER DIFFERENT LINK BUDGETS AND OVERLAY NETWORKS - In an embodiment, an application server determines to transmit a first data stream in a first multicasting area, a second data stream in a second multicasting area and both data streams in a third multicasting area that overlaps with the second multicasting area (e.g., at a border region between the first and second multicasting areas). The application server sends the first data stream to a multicast network management node for transmission in the first and third multicasting areas. The application server sends the first and second data streams to a multiplex stream multiplexer that multiplexes the two data streams into a single higher-rate multiplexed multicast stream with packets that include payloads data for both the first and second data streams. The multiplexed multicast stream is delivered to the third multicasting area for transmission to at least one target UE. | 07-04-2013 |
20130194999 | CLIENT-ASSISTED TARGET MULTICAST AREA DETECTION - The disclosure is directed to group communications over multimedia broadcast/multicast services (MBMS). An aspect receives location information for each of a plurality of multicast-enabled target user devices, determines one or more area polygons based on the location information, each area polygon comprising a list of network components configured to provide multicast services to a subset of the plurality of multicast-enabled target user devices, and stores the one or more area polygons. An aspect receives a call request to establish a group call among a plurality of multicast-enabled target user devices, identifies one or more area polygons corresponding to the plurality of multicast-enabled target user devices, and provides a list of network components obtained from the one or more area polygons to one or more broadcast multicast service centers (BM-SCs) serving the plurality of multicast-enabled target user devices. | 08-01-2013 |
20140064070 | OPTIMISTIC QUALITY OF SERVICE SET UP - The disclosure relates to optimistic QoS setup. A network element receives an IP packet that is not associated with a QoS request on a bearer for an application/service executing on a target client device, and initiates QoS activation for the target client device based on a combination of an application-specific identifier from the target client device and a user-specific identifier of the application/service. A server receives a session setup request that is not associated with a QoS request for an application/service executing on a target client device, the session setup request identifying one or more client devices to participate in a session, and initiates QoS activation for at least one of the client devices, before a session announcement is transmitted to the client devices, based on a combination of an application-specific identifier from the target client device and a user-specific identifier of the application/service. | 03-06-2014 |
20140064071 | DIRECTIONAL ADJUSTMENT TO QUALITY OF SERVICE BASED ON MONITORED TRAFFIC ACTIVITY ON A LINK - In an embodiment, an apparatus monitors traffic usage in uplink and downlink directions of a link that is configured to support a communication session for the client device. The apparatus can correspond to a core network component or to an access network component. The apparatus initiates, in association with the communication session, (i) an uplink-specific QoS adjustment to a first level of QoS assigned to the uplink direction of the link based on the monitored traffic usage in the uplink direction, and/or (ii) a downlink-specific QoS adjustment to a second level of QoS assigned to the downlink direction of the link based on the monitored traffic usage in the downlink direction. The link is maintained in both the downlink and uplink directions throughout the communication session irrespective of any QoS adjustments in the uplink and/or downlink directions of the link that occur during the communication session. | 03-06-2014 |
20140064084 | DIRECTIONAL ADJUSTMENT TO QUALITY OF SERVICE BASED ON PREDICTED TRAFFIC ACTIVITY ON A LINK - In an embodiment, an apparatus predicts traffic usage in uplink and downlink directions of a link that is configured to support a communication session for the client device. In an example, the predictions can be based upon a call state parameter (e.g., if the client device is a non-floorholder or is muted the client device is unlikely to send much traffic in the uplink direction, etc.). The apparatus initiates, in association with the communication session, (i) an uplink-specific QoS adjustment to a first level of Quality of Service (QoS) assigned to the uplink direction of the link based on the predicted traffic usage in the uplink direction, and/or (ii) a downlink-specific QoS adjustment to a second level of QoS assigned to the downlink direction of the link based on the predicted traffic usage in the downlink direction. The apparatus can correspond to the client device or alternatively to a server. | 03-06-2014 |
20140064124 | MANAGING GUARANTEED BIT RATE QUALITY OF SERVICE RESOURCE ALLOCATION BASED ON GUARANTEED BIT RATE DATA ACTIVITY ON A LINK - In an embodiment, an apparatus (e.g., a client device, an eNodeB, MME, S-GW, P-GW, UTRAN component, etc.) detects a first transition of a client device from an active state to an idle state while the client device is allocated a Quality of Service (QoS) link by a serving network. The apparatus caches QoS information associated with the QoS link, and releases the QoS link in response to the detection of the first transition. The apparatus later detects, after the caching and releasing, a second transition of the client device from the idle state back to the active state. The apparatus re-establishes the QoS link in response to the detection of the second transition using the cached QoS information. | 03-06-2014 |
20140064156 | SELECTIVE NETWORK PARAMETER CONFIGURATONS BASED ON NETWORK IDENTIFICATION OF NON-IMS MULTIMEDIA APPLICATIONS - In a first embodiment, an access network detects whether QoS links for both IMS and non-IMS sessions are allocated to a client device, whereby the non-IMS session is recognized as being associated with a particular application type. An SRVCC feature for the IMS session is disabled if the QoS link for the non-IMS session exists and carries at least a threshold level of traffic. In a second embodiment, a non-IMS session is supported by a first network with QoS and is then handed off to a second network. After the handoff, the second network supports the non-IMS session with an application-specific QoS configuration based on application-identifying information provided from the first network. In a third embodiment, a single or dual-transceiver client device is engaged in a non-IMS session with QoS. A page originating from a CS network is ignored if a do-not-disturb feature is activated for the non-IMS session. | 03-06-2014 |
20140064176 | APPLICATION LAYER RELATED GROUP PRIORITY ACCESS USING EMBMS AND LTE PRIORITY ACCESS - The disclosure relates to dynamically controlling group priority access to a wireless network for a plurality of subscriber devices. An aspect transmits, on a broadcast/multicast interface, a priority group list indicating a priority state of at least one communications group of subscriber devices, wherein a subscriber device is barred from performing channel access procedures when at least one group identifier of the priority group list does not match at least one group identifier of a list of group identifiers of the subscriber device. An aspect receives, on a broadcast/multicast interface, a priority group list indicating a priority state of at least one communications group of subscriber devices, and bars channel access procedures when at least one group identifier of the priority group list does not match at least one group identifier of a list of group identifiers of the subscriber device. | 03-06-2014 |
20140064177 | EVOLVED MULTIMEDIA BROADCAST/MULTICAST SERVICES (eMBMS) GEO-LOCATION BASED GROUP CALL - The disclosure generally relates to techniques that may be used to coordinate an evolved multimedia broadcast/multicast services (eMBMS) geo-location based group call. More particularly, an eMBMS bearer may be established to support a group call based on a mapping among eMBMS network components that service a geographic area selected by an originator associated with the group call (e.g., an area that the call originator defines according to latitude and longitude coordinates, a selected region on a map that displays available group members in the selected region, network identifications, etc.). The group call may then be initiated over the established eMBMS bearer using network group identifiers associated with the call originator and one or more group members present in the selected geographic area and unicast service with a dedicated link to group members located outside the selected geographic area may be established to include such group members in the group call. | 03-06-2014 |
20140064209 | OPTIMIZED ALWAYS-ON WIRELESS SERVICE USING NETWORK ASSISTANCE AND KEEP-ALIVES - The disclosure generally relates to optimized always-on wireless service using network assistance and keep-alives. More particularly, in response to a user equipment (UE) requesting a bearer for an always-on service, a network may establish the bearer for the always-on service and transmit an availability time that indicates a period during which the bearer will be held in an active state to the UE. Any applications running on the UE may then use the bearer for the always-on service, and the UE may transmit a single keep-alive message to the network before the availability time expires to reset the period during which the bearer will be held in the active state. Furthermore, the keep-alive message may be structured to not generate a reply and thereby reduce battery consumption, reduce communication overhead, and improve network capacity | 03-06-2014 |
20140064210 | SELECTIVELY ALLOCATING QUALITY OF SERVICE TO SUPPORT MULTIPLE CONCURRENT SESSIONS FOR A CLIENT DEVICE - In an embodiment, a server mediates a first group communication session with the user equipment (UE) by exchanging media for the first group communication session with the UE over a first link with a first level of Quality of Service (QoS) resources (e.g., either without a guaranteed bit rate (GBR) or a threshold amount of GBR) and exchanging non-media signaling data for the first group communication session with the UE over a signaling link that is either the same or separate from the first link. The server detects, while the UE continues participation in the first group communication session, that the UE has joined or is attempting to join a second group communication session. The server applies a policy for selectively allocating additional QoS resources to supplement the first level of QoS resources to the UE for concurrently supporting both the first and second group communication sessions in response to the detection. | 03-06-2014 |
20140066082 | PROVIDING GROUP CALL PRIORITY ACCESS IN LTE AND PRIORITY ACCESS FOR USER EQUIPMENTS WITH DUAL ACCESS CLASSES - The disclosure relates to determining priority access with dual access barring classes. An aspect receives, at a client device, at least one high priority access barring class and at least one low priority access barring class, switches to the low priority access barring class, receives an access barring message, and switches to the high priority access barring class in response to receiving the access barring message. An aspect receives a call request for a high priority call among a group of client devices, transmits a notification to a network instructing it to transmit an access barring message in response to receiving the call request, wherein one or more members of the group of client devices switch to a high priority access class in response to receiving the access barring message, and suppresses call announcements for non-priority call requests after transmitting the notification. | 03-06-2014 |
20140068064 | METHOD FOR QOS MANAGEMENT IN HOME AND ROAMING SCENARIOS BASED ON LOCATION/APP SERVER ASSISTANCE - The disclosure is related to managing, at an application server, a quality of service (QoS) provided for an application executing on a client device. An aspect receives, from the client device, an identifier of a first network servicing the client device, determines a QoS of a supplemental link established by a second network for the application, determines whether or not the QoS of the supplemental link meets requirements of the application, and determines whether or not the first network is able to support an alternative acceptable QoS when the QoS of the supplemental link does not meet the requirements of the application. | 03-06-2014 |
20140068098 | REDUCING NETWORK LATENCY RESULTING FROM NON-ACCESS STRATUM (NAS) AUTHENTICATION FOR HIGH PERFORMANCE CONTENT APPLICATIONS - Aspects relating to reducing network latency in systems that use NAS Authentication/Security procedures are disclosed. For example, a method for reducing latency due to NAS authentication can include determining a number (n) or time (t) of service requests from an idle state that trigger a NAS authentication. A penultimate service request is detected before the nth service request or after time (t). A gratuitous service request is sent after the penultimate service request. | 03-06-2014 |
20140078898 | HANDING OFF BETWEEN NETWORKS WITH DIFFERENT RADIO ACCESS TECHNOLOGIES DURING A COMMUNICATION SESSION THAT IS ALLOCATED QUALITY OF SERVICE - In an embodiment, a UE performs an IRAT handoff from a source network with a first RAT to a target network with a second RAT, and obtains a channel from the target network. The UE reports a level of QoS on the channel to a server via the target network. The server issues instructions to the UE and/or the target network for modifying the level of QoS in response to the report based on if the level of QoS is insufficient to support a particular type of communication session. In another embodiment, in conjunction with an IRAT handoff, the source network sends a handoff preparation message to the target network to facilitate the target network to initiate setup of a set of channels with a non-IMS application-specific QoS configuration for the UE on the target network in conjunction with the handoff. | 03-20-2014 |
20140119267 | APPLICATION-LAYER HANDOFF OF AN ACCESS TERMINAL FROM A FIRST SYSTEM OF AN ACCESS NETWORK TO A SECOND SYSTEM OF THE ACCESS NETWORK DURING A COMMUNICATION SESSION WITHIN A WIRELESS COMMUNICATIONS SYSTEM - The disclosure uses a low-cost local wireless network to expand coverage of a multicast service. A user device determines whether a signal strength for a detected wireless multicast service is greater than a threshold, determines whether a low cost local wireless network is available, and communicates with an application server over the low cost local wireless network based on the signal strength being not greater than the threshold and the low cost local wireless network being available. A server receives a request from a user device to send multicast communications to the user device over the low cost local wireless network serving the user device, wherein the user device sends the request based on a signal strength of a detected wireless multicast network being less than a threshold and the low cost local wireless network being available, and communicates with the use device over the low cost local wireless network. | 05-01-2014 |
20140192697 | EVOLVED MULTIMEDIA BROADCAST/MULTICAST SERVICES (eMBMS) CLUSTER MANAGEMENT - In an embodiment, a server determines a first support state for the group communication session that defines a first set of sectors belonging to a multicast/broadcast single frequency network (MBSFN) area for transmission of the session media for the group communication session via Internet Protocol (IP) multicast. The server then transitions the group communication session from the first support state to a second support state that defines a second set of sectors belonging to the MBSFN area for transmission of the session media for the group communication session via IP multicast. Before the transition, the server delivers the session media to the first set of sectors via IP multicast in accordance with the first support state. After the transition, the server delivers the session media to the second set of sectors via IP multicast in accordance with the second support state. | 07-10-2014 |
20140192698 | SELECTIVELY ADJUSTING A RATE OR DELIVERY FORMAT OF MEDIA BEING DELIVERED TO ONE OR MORE MULTICAST/BROADCAST SINGLE FREQUENCY NETWORKS FOR TRANSMISSION - In an embodiment, a first MBSFN area is configured to support a higher data rate than a lower data rate portion of a second MBSFN area, and an application server executes a common data rate mode by delivering a data stream for a group session to the first and second MBSFN areas via IP multicast at a common data rate that is regulated by quality feedback. In a further embodiment, the application server exits the common data rate mode and delivers the data stream to the first MBSFN area via IP multicast at an MBSFN-specific data rate that is higher than the common data rate, while delivering the data stream to the lower data rate portion of the second MBSFN area via IP unicast. In another further embodiment, the application server resumes the common data rate mode. | 07-10-2014 |
20140194100 | ENABLING A WIRELESS COMMUNICATION DEVICE TO SWTICH FROM ONE LOCAL NETWORK TO A SEPARATE WIDE AREA NETWORK FOR A HIGH PRIORITY MULTICAST GROUP COMMUNICATION - The disclosure is related to group communications over multimedia broadcast/multicast services (MBMS). An aspect determines whether a number of one or more user devices in an MBMS coverage area participating in a group call is less than a threshold, and delivers a media stream for the group call to a user device of the one or more user devices over a wireless local area network (WLAN) to which the user device is connected based on the number of the one or more user devices in the MBMS coverage area being less than the threshold. | 07-10-2014 |
20140219083 | DYNAMIC QUALITY OF SERVICE (QOS) FOR SERVICES OVER CELLULAR - The disclosure is related to dynamically applying quality of service (QoS) to a call. An aspect determines a packet transmission state of a subscriber on the call, determines whether or not the QoS is allocated to the subscriber, and allocates the QoS to the subscriber based on the QoS not being allocated to the subscriber and the packet transmission state indicating that the subscriber is sending packets. | 08-07-2014 |
20140219167 | QUALITY OF SERVICE FOR WEB CLIENT BASED SESSIONS - The disclosure generally relates to network-initiated and client-initiated mechanisms to enable quality of service (QoS) for web-based client applications that may high efficiency, high performance, or otherwise guaranteed service levels. For example, to enable QoS for calls or other sessions associated a web-based application, one or more signaling messages may be exchanged between a server and a first user equipment (UE) to establish a call between the first UE and a second UE and to establish a peer connection between the server and at least the first UE. As such, QoS may be activated for at least the peer connection between the first UE and the server, wherein the server may route data associated with the web-based application between the first UE and the second UE over the established peer connection to implement the activated QoS. | 08-07-2014 |
20140301180 | OPPORTUNISTIC MEDIA PATCHING FOR A COMMUNICATION SESSION - A user equipment (UE) selectively attempts recovery of lost media for a real-time communication session. In an embodiment, the UE detects presence of a lost media packet from another UE participating in the real-time communication session that did not successfully arrive at the UE. The UE evaluates a set of recovery criteria associated with the lost media packet to attempt to dynamically select at least one external source from a plurality of external sources from which the lost media packet can potentially be recovered at different predicted reliabilities and/or response times for attempting recovery of the lost media packet based on the set of recovery criteria. The UE attempts to recover the lost media packet from the selected at least one external source based on the evaluation. | 10-09-2014 |
Patent application number | Description | Published |
20100252417 | HIGH PRESSURE RF-DC SPUTTERING AND METHODS TO IMPROVE FILM UNIFORMITY AND STEP-COVERAGE OF THIS PROCESS - Embodiments of the invention generally provide a processing chamber used to perform a physical vapor deposition (PVD) process and methods of depositing multi-compositional films. The processing chamber may include: an improved RF feed configuration to reduce any standing wave effects; an improved magnetron design to enhance RF plasma uniformity, deposited film composition and thickness uniformity; an improved substrate biasing configuration to improve process control; and an improved process kit design to improve RF field uniformity near the critical surfaces of the substrate. The method includes forming a plasma in a processing region of a chamber using an RF supply coupled to a multi-compositional target, translating a magnetron relative to the multi-compositional target, wherein the magnetron is positioned in a first position relative to a center point of the multi-compositional target while the magnetron is translating and the plasma is formed, and depositing a multi-compositional film on a substrate in the chamber. | 10-07-2010 |
20110036709 | PROCESS KIT FOR RF PHYSICAL VAPOR DEPOSITION - Embodiments of the invention generally relate to a process kit for a semiconductor processing chamber, and a semiconductor processing chamber having a kit. More specifically, embodiments described herein relate to a process kit including a cover ring, a shield, and an isolator for use in a physical deposition chamber. The components of the process kit work alone and in combination to significantly reduce particle generation and stray plasmas. In comparison with existing multiple part shields, which provide an extended RF return path contributing to RF harmonics causing stray plasma outside the process cavity, the components of the process kit reduce the RF return path thus providing improved plasma containment in the interior processing region. | 02-17-2011 |
20110186426 | ADJUSTABLE PROCESS SPACING, CENTERING, AND IMPROVED GAS CONDUCTANCE - Embodiments of the invention generally provide a process kit for use in a physical deposition chamber (PVD) chamber. In one embodiment, the process kit provides adjustable process spacing, centering between the cover ring and the shield, and controlled gas flow between the cover ring and the shield contributing to uniform gas distribution, which promotes greater process uniformity and repeatability along with longer chamber component service life. | 08-04-2011 |
20110240464 | APPARATUS FOR PHYSICAL VAPOR DEPOSITION HAVING CENTRALLY FED RF ENERGY - In some embodiments, a feed structure to couple RF energy to a target may include a body having a first end to receive RF energy and a second end opposite the first end to couple the RF energy to a target, the body further having a central opening disposed through the body from the first end to the second end; a first member coupled to the body at the first end, wherein the first member comprises a first element circumscribing the body and extending radially outward from the body, and one or more terminals disposed in the first member to receive RF energy from an RF power source; and a source distribution plate coupled to the second end of the body to distribute the RF energy to the target, wherein the source distribution plate includes a hole disposed through the plate and aligned with the central opening of the body. | 10-06-2011 |
20130087452 | PROCESS KIT FOR RF PHYSICAL VAPOR DEPOSITION - Embodiments of the invention generally relate to a process kit for a semiconductor processing chamber, and a semiconductor processing chamber having a kit. More specifically, embodiments described herein relate to a process kit including a cover ring, a shield, and an isolator for use in a physical deposition chamber. The components of the process kit work alone and in combination to significantly reduce particle generation and stray plasmas. In comparison with existing multiple part shields, which provide an extended RF return path contributing to RF harmonics causing stray plasma outside the process cavity, the components of the process kit reduce the RF return path thus providing improved plasma containment in the interior processing region. | 04-11-2013 |
20130255576 | PROCESS KIT SHIELD FOR PLASMA ENHANCED PROCESSING CHAMBER - Apparatus for processing substrates is disclosed herein. In some embodiments, an apparatus includes a first shield having a first end, a second end, and one or more first sidewalls disposed between the first and second ends, wherein the first end is configured to interface with a first support member of a process chamber to support the first shield in a position such that the one or more first sidewalls surround a first volume of the process chamber; and a second shield having a first end, a second end, and one or more second sidewalls disposed between the first and second ends of the second shield and about the first shield, wherein the first end of the second shield is configured to interface with a second support member of the process chamber to support the second shield such that the second shield contacts the first shield to form a seal therebetween. | 10-03-2013 |
20130256126 | SUBSTRATE SUPPORT WITH RADIO FREQUENCY (RF) RETURN PATH - Apparatus for processing substrates are provided herein. In some embodiments, an apparatus for processing a substrate includes a substrate support that may include a dielectric member having a surface to support a substrate thereon; one or more first conductive members disposed below the dielectric member and having a dielectric member facing surface adjacent to the dielectric member; and a second conductive member disposed about and contacting the one or more first conductive members such that RF energy provided to the substrate by an RF source returns to the RF source by traveling radially outward from the substrate support along the dielectric member facing surface of the one or more first conductive members and along a first surface of the second conductive member disposed substantially parallel to a peripheral edge surface of the one or more first conductive members after travelling along the dielectric layer facing surface. | 10-03-2013 |
20140061040 | ADJUSTABLE PROCESS SPACING, CENTERING, AND IMPROVED GAS CONDUCTANCE - Embodiments of the invention generally provide a process kit for use in a physical deposition chamber (PVD) chamber. In one embodiment, the process kit provides adjustable process spacing, centering between the cover ring and the shield, and controlled gas flow between the cover ring and the shield contributing to uniform gas distribution, which promotes greater process uniformity and repeatability along with longer chamber component service life. | 03-06-2014 |
20140158049 | PROCESS KIT SHIELD FOR PLASMA ENHANCED PROCESSING CHAMBER - Apparatus for processing substrates is disclosed herein. In some embodiments, an apparatus includes a first shield having a first end, a second end, and one or more first sidewalls disposed between the first and second ends, wherein the first end is configured to interface with a first support member of a process chamber to support the first shield in a position such that the one or more first sidewalls surround a first volume of the process chamber; and a second shield having a first end, a second end, and one or more second sidewalls disposed between the first and second ends of the second shield and about the first shield, wherein the first end of the second shield is configured to interface with a second support member of the process chamber to support the second shield such that the second shield contacts the first shield to form a seal therebetween. | 06-12-2014 |
20140166480 | ADJUSTABLE PROCESS SPACING, CENTERING, AND IMPROVED GAS CONDUCTANCE - Embodiments of the invention generally provide a process kit for use in a physical deposition chamber (PVD) chamber. In one embodiment, the process kit provides adjustable process spacing, centering between the cover ring and the shield, and controlled gas flow between the cover ring and the shield contributing to uniform gas distribution, which promotes greater process uniformity and repeatability along with longer chamber component service life. | 06-19-2014 |
20140261177 | APPARATUS FOR GAS INJECTION IN A PHYSICAL VAPOR DEPOSITION CHAMBER - Apparatus for physical vapor deposition are provided herein. In some embodiments, a shield for use in a physical vapor deposition chamber, comprises an annular one-piece body having an inner volume, a top opening and a bottom opening, wherein a bottom of the annular one-piece body includes an inner upwardly extending u-shaped portion, an annular groove formed in an inner wall of the one-piece body, and a plurality of gas distribution vents disposed along the annular feature and formed through the one-piece body, wherein the plurality of gas distribution vents are spaced apart from each other to distribute gases into the inner volume in a desired pattern. | 09-18-2014 |
20140262763 | SELECTIVELY GROUNDABLE COVER RING FOR SUBSTRATE PROCESS CHAMBERS - Embodiments of a process kit for substrate process chambers are provided herein. In some embodiments, a process kit for a substrate process chamber may include a ring having a body and a lip extending radially inward from the body, wherein the body has a first annular channel formed in a bottom of the body; an annular conductive shield having a lower inwardly extending ledge that terminates in an upwardly extending portion configured to interface with the first annular channel of the ring; and a conductive member electrically coupling the ring to the conductive shield when the ring is disposed on the conductive shield. | 09-18-2014 |