公开(公告)号：US09832688B2

公开(公告)日：2017-11-28

申请号：US15014953

申请日：2016-02-03

Applicant: Sprint Spectrum L.P.

Inventor： Ryan S. Talley ,  Muralidhar R. Malreddy ,  Shilpa Kowdley Srinivas ,  Kyle C. Allen

IPC: H04W36/00 ,  H04W72/04 ,  H04W36/14

CPC classification number: H04W36/0022 ,  H04W36/14 ,  H04W72/0453

Abstract: Embodiments are described that may help to provide wireless service in a circuit-switched fall back scenario. In particular, when a user entity (UE) falls back from a first network to a second network to conduct a voice call, the first network may instruct the UE to scan a certain predetermined channel or channels for coverage from the second network. However, certain types of base stations typically operate on unlisted channels that differ from the predetermined channels that the UE is instructed to scan. Accordingly, a UE may pre-emptively scan unlisted channels, and report any unlisted channel that is detected to the first network. The first network can then coordinate with the second network to re-provision the base station that was operating on an unlisted channel, to instead operate on one of the predetermined channels that a UE will be instructed to scan during fall back to the second network.

公开(公告)号：US09820331B1

公开(公告)日：2017-11-14

申请号：US14619346

申请日：2015-02-11

Applicant: Sprint Spectrum L.P.

Inventor： Jasinder P. Singh ,  Siddharth S. Oroskar ,  Anoop K. Goyal

IPC: H04W76/06 ,  H04W28/04

CPC classification number: H04W76/34 ,  H04W76/18 ,  H04W76/38

Abstract: Disclosed is a method and system for release of a UE's context record in response to failure of air interface communication. As disclosed, a wireless communication system includes a base station that has a protocol stack defining a series of logical processing layers through which the base station sequentially processes data for transmission to a UE. The layers include an upper layer and a physical layer at which the base station processes the data for communication over an air interface to the UE. Accordingly, the base station detects failure of air interface communication between the base station and the UE. In response to detecting the failure, and without waiting to detect at the upper layer a further failure corresponding with the failure of the air interface communication, the base station transmits to a network controller a UE-context release request requesting release of bearer context that was established for the UE.

公开(公告)号：US09750047B1

公开(公告)日：2017-08-29

申请号：US14843592

申请日：2015-09-02

Applicant: Sprint Spectrum L.P.

Inventor： Nitesh Manchanda ,  Siddharth S. Oroskar ,  Jasinder P. Singh

IPC: H04B7/00 ,  H04W72/14 ,  H04M15/00 ,  H04W76/04 ,  H04W76/02 ,  H04W74/08 ,  H04W4/16 ,  H04W88/02 ,  H04W88/08 ,  H04W92/10

CPC classification number: H04M15/59 ,  H04M15/56 ,  H04W4/16 ,  H04W72/1278 ,  H04W74/008 ,  H04W74/0833 ,  H04W76/12 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08 ,  H04W92/10

Abstract: Disclosed is a method and system that may help to expedite initiation of a packet-based real-time media session such as a VoIP session. Per the disclosure, the initial uplink grant that a base station provides to a UE in response to an access request may be an extent of uplink resources sufficient to carry just a radio-link-layer connection request. But when a UE is going to initiate a packet-based real-time media session, the UE may send a particular type of access request that is indicative of the plan to initiate a packet-based real-time media session, and responsive to the access request being of that particular type, the base station may then instead provide an initial grant of a greater extent of uplink resources sufficient to carry from the UE not only the radio-link-layer connection request but also a session initiation request (e.g., SIP INVITE) for the packet-based real-time media session.

公开(公告)号：US09723535B1

公开(公告)日：2017-08-01

申请号：US14536908

申请日：2014-11-10

Applicant: Sprint Spectrum L.P.

Inventor： Sreekar Marupaduga ,  Gauravpuri Goswami ,  Andrew M. Wurtenberger ,  Patrick J. Schmidt

IPC: H04W36/00 ,  H04W36/32 ,  H04W36/08 ,  H04W36/38 ,  H04W36/14 ,  H04W36/22

CPC classification number: H04W36/22 ,  H04W36/0083 ,  H04W36/14

Abstract: Systems and methods for performing UE handover based on group delay variation include a base station (i) selecting a target neighbor sector from a plurality of neighbor sectors for the handover, where each neighbor sector has a group delay metric, and where the target neighbor sector is selected from the neighbor sectors based at least in part on each neighbor sector's group delay variation and (ii) initiating handover of the UE to the target neighbor sector. Some embodiments include creating a neighbor relations table (NRT) comprising at least some of the neighbor sectors, and prioritizing the NRT based on group delay and/or group delay variation. In some embodiments, selection of the target neighbor sector for the handover is additionally based on neighbor sector handover success rates and Reference Signal Receive Power (RSRP) values for neighbor sectors reported by the UE for which the handover is to be performed.

公开(公告)号：US09655127B1

公开(公告)日：2017-05-16

申请号：US14575653

申请日：2014-12-18

Applicant: Sprint Spectrum L.P.

Inventor： Shilpa Kowdley Srinivas ,  Hemanth B. Pawar ,  Krishna Sitaram ,  Daniel A. Vivanco

IPC: H04W4/00 ,  H04W72/04

CPC classification number: H04W72/0486

Abstract: Disclosed is a method and system for dynamically managing carrier aggregation based on operating conditions of small cells in a wireless communication system. A first base station may be configured for providing wireless services on a first wireless carrier band and a second wireless carrier band. One or more additional base stations may each configured for providing wireless services on the second wireless carrier band. A determination can be made that a load on the one or more additional base stations exceeds a threshold level while each is providing wireless coverage within a region that at least partially overlaps with wireless coverage provided by the first base station. In response, the first base can be caused to refrain from aggregating the first and second wireless carrier bands for providing wireless services under operational conditions defined to cause the base station to aggregate the first and second wireless carrier bands.

公开(公告)号：US09629160B1

公开(公告)日：2017-04-18

申请号：US14573174

申请日：2014-12-17

Applicant: Sprint Spectrum L.P.

Inventor： Volkan Sevindik

IPC: H04L12/50 ,  H04W72/04

CPC classification number: H04W72/0453 ,  H04L5/00 ,  H04W72/0486

Abstract: Disclosed is a method and system for managing carriers on which a wireless communication system serves a UE. As disclosed, the system serves the UE on a set of one or more carriers. While serving the UE on the set of one or more carriers, the system determines that the UE should additionally be served on at least one other carrier. The system then selects the at least one other carrier, from a set of candidate carriers, based at least in part on the at least one other carrier being closest, of the set of candidate carriers, in the frequency spectrum to the set of one or more carriers. Based on the selecting, the system then adds the selected at least one other carrier to the set of one or more carriers to establish a modified set of carriers and serves the UE on the modified set of carriers.

公开(公告)号：US09629035B1

公开(公告)日：2017-04-18

申请号：US14080566

申请日：2013-11-14

Applicant: Sprint Spectrum L.P.

Inventor： Jasinder P. Singh ,  Sachin R. Vargantwar ,  Manoj Shetty ,  Bhagwan Khanka

IPC: H04W36/00

CPC classification number: H04W36/0055 ,  H04W8/26 ,  H04W36/0066 ,  H04W48/20

Abstract: An access terminal establishes a session with a first radio access network (RAN). As a result, the access terminal receives a Unicast Access Terminal Identifier (UATI) assigned by the first RAN and establishes configuration settings for radio communications between the access terminal and the first RAN. The access terminal moves from the first RAN to a second RAN. Before the access terminal has a session established with the second RAN, the access terminal receives a request from a user to originate a call. In response, the access terminal sends the second RAN a connection request that includes the UATI assigned by the first RAN. The second RAN evaluates the UATI included in the connection request and determines that it was previously assigned to the access terminal by another RAN. Based on this determination, the second RAN grants the connection request by assigning a traffic channel to the access terminal.

公开(公告)号：US09622209B1

公开(公告)日：2017-04-11

申请号：US13967790

申请日：2013-08-15

Applicant: Sprint Spectrum L.P.

Inventor： Sara Gatmir-Motahari ,  Kosol Jintaseranee ,  Heesook Choi

IPC: H04W64/00 ,  H04W84/04

CPC classification number: H04W64/003 ,  G01S5/00 ,  H04W84/045

Abstract: A method and systems for determining a location of a Low-Cost Internet Base Station (LCIB) are described. An LCIB may engage in communication with a macro network using a wireless communication interface, such that the macro network assigns the LCIB to operate as a mobile station on a particular active set of one or more particular sectors. The LCIB may transmit data indicative of the particular active set to the macro network using a backhaul connection to the macro network. Responsive to the LCIB transmitting the data indicative of the particular active set to the macro network, the LCIB may receive a location corresponding to the particular active set from the macro network via the backhaul connection to the macro network.

公开(公告)号：US09591648B1

公开(公告)日：2017-03-07

申请号：US14531422

申请日：2014-11-03

Applicant: Sprint Spectrum L.P.

Inventor： Suryanarayanan Ramamurthy ,  Jasinder P. Singh

IPC: H04J11/00 ,  H04W72/04 ,  H04L5/00 ,  H04W72/10

CPC classification number: H04W72/048 ,  H04J11/00 ,  H04J2011/0013 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/14 ,  H04W72/10

Abstract: An example embodiment may involve defining an orthogonal frequency-division multiplexed (OFDM) wireless air interface that contains time-division multiplexed subframes. A primary signaling channel may be formed by modulation symbols that are statically allocated to fixed time positions of each subframe, and span contiguous subcarrier frequencies. A secondary signaling channel may be defined in the OFDM wireless air interface. The secondary signaling channel may be formed by modulation symbols that are dynamically allocated to time positions of one or more subcarrier frequencies, and span at least two consecutive subframes of the OFDM wireless air interface. A signaling message may be transmitted, on the primary signaling channel, to one or more WCDs. The signaling message may be transmitted in a first subframe of the consecutive subframes, and may identify the secondary signaling channel.

Abstract translation: 一个示例性实施例可以涉及定义包含时分多路复用子帧的正交频分复用（OFDM）无线空中接口。 主信令信道可以由静态分配给每个子帧的固定时间位置并且跨越连续子载波频率的调制符号形成。 可以在OFDM无线空中接口中定义二次信令信道。 辅助信令信道可以由动态分配给一个或多个子载波频率的时间位置并跨越OFDM无线空中接口的至少两个连续子帧的调制符号形成。 信令消息可以在主信令信道上发送到一个或多个WCD。 可以在连续子帧的第一子帧中发送信令消息，并且可以识别次信令信道。

公开(公告)号：US09591548B1

公开(公告)日：2017-03-07

申请号：US14488181

申请日：2014-09-16

Applicant: Sprint Spectrum L.P.

Inventor： Talat Jamshidi ,  Wen Xue ,  Jay D. Cole ,  Rajat Kumar ,  Siddharth S. Oroskar ,  Nitesh Manchanda ,  Jasinder P. Singh

IPC: H04W36/30 ,  H04W36/14

CPC classification number: H04W36/30 ,  H04W36/14

Abstract: In accordance with the disclosed methods and systems, while providing a service that enables user equipment devices (UEs) being served by a first network to engage in signaling with a second network via the first network, a controller or other network entity may detect an error condition associated with the service, such as a threshold-high level of signaling or an interface failure. In response to detecting the error condition, base stations in the first network may then direct one or more UEs being served by the first network to refrain from using the given service. As a result, the one or more UEs may refrain from using the given service and may instead use another approach to engage in signaling with the second network, which may enable the one or more UEs to circumvent the error condition until it gets remedied.

Abstract translation: 根据所公开的方法和系统，当提供使得由第一网络服务的用户设备设备（UE）经由第一网络与第二网络进行信令的服务时，控制器或其他网络实体可以检测到错误 与服务相关联的条件，例如阈值高的信令级别或接口故障。 响应于检测到错误状况，第一网络中的基站然后可以引导由第一网络服务的一个或多个UE来避免使用给定的服务。 结果，一个或多个UE可以避免使用给定的服务，并且可以替代地使用另一种方法来与第二网络进行信令通信，这可以使一个或多个UE绕过错误状况直到得到补救。