Controlling level of carrier aggregation based on MIMO-layer support

    公开(公告)号:US11438948B1

    公开(公告)日:2022-09-06

    申请号:US16174508

    申请日:2018-10-30

    Abstract: A method and system for controlling how many carriers to aggregate together for carrier-aggregation service of a UE. A base station could take into account how many MIMO layers a UE would support respectively for each of various candidate quantities of carriers, and the base station could select the candidate quantity of carriers that would result in use of a highest aggregate total number of MIMO layers. Further, the selection could involve mapping UE-reported rank to a quantity of carriers, with the rank being inversely proportional to the selected quantity of carriers. The base station could then configure carrier-aggregation service of the UE with the selected quantity of carriers.

    Dynamic paging concatenation methods and systems

    公开(公告)号:US10524230B1

    公开(公告)日:2019-12-31

    申请号:US15629655

    申请日:2017-06-21

    Abstract: Methods and systems disclosed herein can help to dynamically adjust the degree of or enable/disable concatenation of page messages, depending upon whether a user equipment is operating as a single radio LTE (SRLTE) device. An exemplary method involves a radio access network: (i) determining that a UE is configured to use a single radio system for both (a) data communication under a first air interface protocol, and (b) voice calls under a second air interface protocol that is different from the first air interface protocol, (ii) based at least in part on the determination, selecting a page-concatenation level to be used to page the first UE, and (iii) transmitting at least on page message to the UE according to the selected page-concatenation level.

    Control of handover based on past duration of control-plane signaling

    公开(公告)号:US10321373B1

    公开(公告)日:2019-06-11

    申请号:US15223197

    申请日:2016-07-29

    Abstract: 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.

    Dynamic modulation and transport block size selection based on retransmission frequency

    公开(公告)号:US10154515B1

    公开(公告)日:2018-12-11

    申请号:US15420725

    申请日:2017-01-31

    Abstract: Disclosed is a method and system for dynamically adjusting modulation and encoding scheme (MCS) and transport block size (TBS) used for downlink transmissions from a base station (BS) to a user equipment device (UE) based on a frequency of retransmission requests from the UE. The BS may identify the UE as belonging to a first class of UEs designated as being capable of receiving data at a first data rate that is higher than a second data rate designated for UEs of a second class, for the same downlink channel quality reported by the UE. Based on the identification, the BS may select a MCS and TBS for the UE corresponding to the first data rate. Upon receiving more than a threshold number of retransmission requests from the UE, the BS may switch to using the second, lower data rate. The first and second classes could correspond to later and earlier technology generations, for example.

    Control of paging based on whether most recent serving base station is a relay base station

    公开(公告)号:US10117223B1

    公开(公告)日:2018-10-30

    申请号:US15420510

    申请日:2017-01-31

    Abstract: A method and system for paging of a wireless client device (WCD). When a wireless communication system encounters a trigger to page a WCD, the system will identify the WCD's most recent serving base station (e.g., the WCD's currently registered base station, or the base station providing the WCD's currently registered coverage area) and will determine whether that base station is a relay base station or rather a non-relay base station. If the base station is a non-relay base station, then the system will provide the initial page of the WCD via just that base station (e.g., as in the zone based paging process discussed above). Whereas, if the base station is a relay base station, then the system will provide the initial (ordinal first) page of the WCD via both that base station and the donor base station that provides the relay base station's wireless backhaul connection.

    Methods and systems for adjusting page transmission power

    公开(公告)号:US10051603B1

    公开(公告)日:2018-08-14

    申请号:US15629648

    申请日:2017-06-21

    Abstract: Methods and systems disclosed herein can help to dynamically adjust page transmission power, and in particular, the transmission power for quick paging bits, depending upon whether a user equipment (UE) is operating as a single radio LTE (SRLTE) device. An exemplary method involves an access network making a determination that a UE is configured to use a single radio system for (a) data communication under a first air interface protocol, and (b) voice calls under a second air interface protocol; and responsively initiating a process to set a transmission power used to page the first UE for a voice call under the second air interface protocol to a higher power level, as compared to a transmission power level utilized to page a second UE configured to use separate radio systems for data communication under the first air interface protocol and voice calls under the second air interface protocol.

    Responding to uplink backhaul congestion by avoiding invocation of uplink MIMO

    公开(公告)号:US10051511B1

    公开(公告)日:2018-08-14

    申请号:US15364170

    申请日:2016-11-29

    Abstract: When a base station is using multiple-input multiple-output (MIMO) communication defining multiple layers of communication to serve a user equipment device (UE) over an uplink channel, and the base station detects that its backhaul connection is threshold highly congested, the base station will responsively reduce the number of communication layers used to serve the UE over the uplink channel. In some examples, the base station could reduce the number of communication layers to a single layer, thereby transitioning from serving the UE using uplink MIMO communication to serving the UE using uplink single-input single-output (SISO) communication.

    Controlling handover based on confidence in response to load-information request

    公开(公告)号:US10039034B1

    公开(公告)日:2018-07-31

    申请号:US15268145

    申请日:2016-09-16

    CPC classification number: H04W36/0055 H04W36/22

    Abstract: A method and system to control WCD handover. A first base station will request load information from a second base station, and, based at least in part on a result of that request, the first base station will control handover of the WCD. The first base station may decline to hand over the WCD to the second base station in response to determining that the first base station did not responsively receive load information from the second base station. Further, the first base station may determine a level of confidence in load information of the second base station based on whether the first base station received load information of the second base station and based on whether the first and second base stations are provided by the same vendor, and the first base station may then use that level of confidence as a basis to control handover of the WCD.

    Management of modulation for transmission of data in anticipation of handover

    公开(公告)号:US09955387B1

    公开(公告)日:2018-04-24

    申请号:US13896058

    申请日:2013-05-16

    CPC classification number: H04W36/0055 H04W36/26

    Abstract: A method of managing modulation for transmission of data in anticipation of handover. When a source base station is serving a UE and determines that the UE is going to hand over to a target base station, the source base station automatically transitions to transmit data to the UE with a low-order MCS selected without regard to CQIs reported by the UE, or at least to apply an MCS corresponding with a CQI lower than that reported by the UE. By applying a low-order MCS to transmit data to the UE, the source base station may increase the likelihood that the data will arrive successfully at the UE, as the low-order MCS may be more tolerant to noise than higher-order MCSs.

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