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1. 发明授权

US09226210B1 Use of fallback carrier load to manage fallback communication setup latency 有权
标题翻译：使用回退载波负载来管理回退通信设置延迟
公开(公告)号：US09226210B1
公开(公告)日：2015-12-29
申请号：US13947568
申请日：2013-07-22
申请人： Sprint Spectrum L.P.
发明人： Ahmad N. Saleh , Siddharth S. Oroskar , Jose L. Hernandez
IPC分类号： H04W36/22
CPC分类号： H04W36/22 , H04W36/0022
摘要： A method and system to help manage latency in setup of fallback communications, such as circuit switched fallback calls for instance, by taking into account the load on various fallback carriers. When a first network is serving a device and engages in a process to facilitate setup of a communication for the device to be served by a second, fallback network, the first network will work with the second network to determine which local carriers of the second network are least loaded, and the first network will then direct the WCD to scan those determined least-loaded carriers in particular. This process may thus help to avoid having the WCD spend time scanning local carriers of the second network that the second network is unlikely to assign in any event due to loading.
摘要翻译：一种方法和系统，用于通过考虑各种后备运营商的负载来帮助管理诸如电路交换回退呼叫的设置中的延迟。当第一网络正在服务设备并且参与一个过程以便于建立要由第二备用网络服务的设备的通信时，第一网络将与第二网络一起确定第二网络的哪些本地载波最不加载，并且第一网络将引导WCD特别地扫描确定的最小负载的载波。因此，该过程可以有助于避免WCD花费时间扫描第二网络的本地载波，使得由于加载而在任何情况下第二网络不太可能分配。

2. 发明授权

US09392518B1 Method and system for controlling a circuit-switched fallback process 有权
标题翻译：用于控制电路交换回退过程的方法和系统
公开(公告)号：US09392518B1
公开(公告)日：2016-07-12
申请号：US14837497
申请日：2015-08-27
申请人： Sprint Spectrum L.P.
发明人： Ahmad N. Saleh , Deveshkumar Rai
IPC分类号： H04W36/14 , H04W36/30 , H04W36/32 , H04W68/00 , H04W24/10 , H04W36/22 , H04W88/08 , H04W88/06
CPC分类号： H04W24/10 , H04W36/0022 , H04W68/005 , H04W88/06 , H04W88/08
摘要： A method and system for controlling a circuit-switched fallback (CSFB) process is disclosed. A first wireless network serving a wireless communication device (WCD) receives from an interworking server an indication of an incoming call that the WCD can receive via a second wireless network. The first wireless network sends the interworking server an indication of a location related to the WCD. The interworking server determines a load level of the second wireless network in an area proximate the indicated location. The interworking server selects a control message based on the load level and sends the selected control message to the first wireless network. The first wireless network determines whether to transition the WCD to the second wireless network to receive the incoming call based on the selected control message from the interworking server.
摘要翻译：公开了一种用于控制电路交换回退（CSFB）过程的方法和系统。服务无线通信设备（WCD）的第一无线网络从互通服务器接收WCD可以经由第二无线网络接收的呼入呼叫的指示。第一无线网络向互通服务器发送与WCD相关的位置的指示。互通服务器确定接近所指示位置的区域中的第二无线网络的负载水平。互通服务器根据负载级别选择控制消息，并将所选择的控制消息发送到第一无线网络。第一无线网络基于来自互通服务器的选择的控制消息来确定是否将WCD转换到第二无线网络以接收呼入。

3. 发明授权

US09877240B1 Method and apparatus for latency-based selection of serving base station 有权
公开(公告)号：US09877240B1
公开(公告)日：2018-01-23
申请号：US14988412
申请日：2016-01-05
申请人： Sprint Spectrum L.P.
发明人： Ahmad N. Saleh
IPC分类号： H04W36/00 , H04W24/10 , H04B17/318 , H04W36/30
CPC分类号： H04W36/0083 , H04B17/318 , H04W24/10 , H04W36/30 , H04W48/20 , H04W84/047
摘要： A wireless communication device (WCD) can communicate with either a first radio access network (RAN) that uses a packet-switched network under the control of a call server for voice calls, or a second RAN that uses a circuit-switched network for voice calls. When served by the first RAN, the WCD determines whether it should be served by a relay base station of the first RAN (a base station that has a wireless backhaul to a donor base station), a non-relay base station of the first RAN, or a base station of the second RAN, by measuring a communication latency with the call server. If the latency is greater than a threshold latency for voice calls, the WCD initiates a handover to a non-relay base station (if served by a relay base station) or to a base station of the second RAN (if served by a non-relay base station).

4. 发明授权

US10321373B1 Control of handover based on past duration of control-plane signaling 有权
公开(公告)号：US10321373B1
公开(公告)日：2019-06-11
申请号：US15223197
申请日：2016-07-29
申请人： Sprint Spectrum L.P.
发明人： Ahmad N. Saleh , Deveshkumar N. Rai , Jasinder P. Singh
IPC分类号： H04W36/08 , H04W36/24 , H04W36/00
摘要： Disclosed is a method and system for selecting a target base station for handover of a wireless communication device, where the selecting is based at least in part on a consideration of the target base station's typical control-plane signaling latency in a core network, and particularly based on a comparison of control-plane signaling duration of multiple candidate target base stations. For instance, where all of the base stations are configured to engage in a particular control-plane signaling transaction from time to time, at issue could be which of the candidate target base stations typically engages in that control-plane signaling transaction the quickest.

5. 发明授权

US09949192B1 Selection of a handover target based at least on a determination that the selected handover target does not have a wireless relay backhaul connection 有权
公开(公告)号：US09949192B1
公开(公告)日：2018-04-17
申请号：US15170080
申请日：2016-06-01
申请人： Sprint Spectrum L.P.
发明人： Ahmad N. Saleh , Jasinder P. Singh , Deveshkumar N. Rai
IPC分类号： H04W36/16 , H04W36/00 , H04W36/14
CPC分类号： H04W36/00835 , H04W84/047
摘要： Disclosed are methods and systems for selection of a handover target for a user equipment device (UE). In particular, a wireless communication system may serve the UE over an air interface connection between the UE and a source base station (BS). While the system serves the UE, the system may make a selection of a handover target for the UE. And in accordance with the disclosure, the selection may be based at least in part on the handover target not having a wireless relay backhaul connection. Once the system selects the handover target using the disclosed approach, the system may then trigger handover of the UE from being served by the source BS to being served by the selected handover target.

6. 发明授权

US09843967B1 Use of fallback coverage area load to manage fallback communication setup 有权
公开(公告)号：US09843967B1
公开(公告)日：2017-12-12
申请号：US14057686
申请日：2013-10-18
申请人： Sprint Spectrum L.P.
发明人： Siddharth S. Oroskar , Jose L. Hernandez , Ahmad N. Saleh
IPC分类号： H04W80/04 , H04W36/00 , H04W48/16
CPC分类号： H04W36/0022 , H04W48/16
摘要： Disclosed is a method and system to help manage latency and reduce unnecessary signaling in setup of fallback communications, such as circuit switched fallback calls for instance, by taking into account the load in various fallback coverage areas. When the load of a fallback coverage area is threshold high, signaling may pass to a serving network to cause that fallback coverage area to be filtered out of a list of fallback coverage areas that a base station of the serving network would provide to a served device, so as to help avoid having the device scan for coverage of that fallback coverage area.

7. 发明授权

US09253747B1 Automatic pre-registration in response to earlier release and redirect 有权
标题翻译：自动预注册响应早期版本和重定向
公开(公告)号：US09253747B1
公开(公告)日：2016-02-02
申请号：US14533365
申请日：2014-11-05
申请人： Sprint Spectrum L.P.
发明人： Ahmad N. Saleh , Kristin A. Hayne , Jose L. Hernandez
IPC分类号： H04W4/00 , H04W60/04 , H04W36/14 , H04W36/00
CPC分类号： H04W60/04 , H04W36/0022 , H04W36/0066
摘要： Disclosed is a method and corresponding system for managing CSFB pre-registration. A first network serving a UE releases the UE from being served by the first network and redirects the UE to transition from being served by the first network to being served by a second network. The first network then detects that the UE has returned to be served by the first network. In response to detecting the return of the UE, and based on the previous releasing and redirecting of the UE, the first network then initiates a pre-registration of the UE with the second network to inform the second network that the UE is now reachable via the first network.
摘要翻译：公开了一种用于管理CSFB预注册的方法和相应的系统。服务于UE的第一网络释放UE不被第一网络服务，并且将UE重定向到从第一网络服务转换为由第二网络服务。然后，第一网络检测到UE已经返回由第一网络服务。响应于检测到UE的返回，并且基于先前的UE的释放和重定向，第一网络然后发起UE与第二网络的预注册，以通知第二网络UE现在可以经由第一个网络。

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