Motorola Solutions, Inc.

Ethan Y Chen

Isam Robert Makhlouf

Francesca Schuler

James A Marocchi

Trent J Miller

Katrin Reitsma

Xiaowei Jin

Wei Mao

Lisa S Whitelock

David G Wiatrowski

Anatoly Agulnik

Michael H Baker

Mark Shahaf

Steven E Vanswol

Badarinath Patibandla

Daniel P Zetzl

Craig P Reilly

Dennis M Drees

Mark Wealleans

Paula Tjandra

Frank F Liang

A method is provided that allows for prioritizing Push-To-Talk (PTT) service in a roamed network. PTT service is enabled for a mobile device at a first network. The mobile device roams to a second network that is of an older generation than the first network. It is determined that the mobile device has an active PTT subscription. PTT service is prioritized for the mobile device over circuit switched services on the second network.

Method for prioritizing push-to-talk service in a roamed network

Systems and methods for frequency spectrum interference coordination in communication systems with dynamically-assigned spectrum. Embodiments provided herein include a spectrum management entity proxy between a cellular network's base stations and the spectrum management entity. The spectrum management entity proxy determines and implements an interference coordination scheme between the base stations of the cellular network. To determine and implement the interference coordination scheme, the spectrum management entity proxy modifies the messages exchanged between one or more base stations and a spectrum management entity before forwarding the messages. In some embodiments, the spectrum management entity proxy generates request messages to the spectrum management entity on behalf of the base stations (and vice versa).

Interference coordination in communication systems with dynamic spectrum management

Systems and methods for enabling inter-frequency user equipment mobility in shared spectrum communication systems. One example system includes a communication interface coupled to an electronic processor. The electronic processor is configured to, for each of a plurality of base stations, determine a location for the base station. The electronic processor is configured to select at least one handover candidate from the plurality of base stations based on the location and at least one base station characteristic. The electronic processor is configured to determine a channel allocation. The electronic processor is configured to generate, based on the channel allocation of the at least one handover candidate, a neighbor channel list. The electronic processor is configured to transmit the neighbor channel list via the communication interface.

Inter-frequency mobility support for communication systems with dynamic spectrum assignments

Methods and systems for dynamically allowing a guest device to a join a private citizens broadband radio systems (CBRS) network. The method includes determining one of a location of the guest device and a location of a public safety incident. The public safety incident is associated with the guest device. The method also includes determining that one of the location of the guest device and the location of the public safety incident is in a coverage area of the private CBRS network. The method further includes reconfiguring the private CBRS network to allow operation of the guest device on the private CBRS network, and operating the guest device on the private CBRS network.

Dynamically allowing a guest device to a join a private CBRS network

A method and network element are provided that manage bearers in a wireless communication system. The method and network element receives a bearer request associated with a user equipment (UE) and a service data flow (SDF). In response to determining that a value of a first quality of service parameter associated with the SDF is the same as a value of the corresponding first quality of service parameter of a bearer currently allocated to the UE, and that a value of the second quality of service parameter associated with the SDF is different than a value of the corresponding second quality of service parameter of the bearer currently allocated to the UE, the method and network element modifies the value of the second quality of service parameter of the bearer currently allocated to the UE to produce a modified bearer and maps the SDF to the modified bearer.

Method and apparatus for managing bearers in a wireless communication system

A method and apparatus are provided, for accessing a data-capture device in a different domain, by public safety wireless communications equipment, for the purpose of obtaining information at an incident. A dispatch controller of a public safety wireless communications system receives an access token from a server of a non-public-safety network, when an incident occurs. The token allows access to a data-capture device, and is associated with the incident. The dispatch controller sends the token to the data-capture device, receives a data stream, and forwards the data stream to a public safety wireless communication device. The public safety wireless communication device may itself discover and access the data-capture device, and may receive the data stream directly from the data-capture device. The public safety wireless communication device may forward the data stream and/or the access token to other public safety wireless communication devices.

Method and apparatus for receiving a data stream during an incident

The same priority is applied to all resources assigned to an incident. A first dispatch system in a first network assigns a network resource in the first network to an incident that occurred in a first jurisdiction. The first dispatch system requests a mutual aid resource from a second dispatch system in a second network subsequent to identifying a resource gap in the first network. The first dispatch system obtains the mutual aid resource from the second dispatch system. A first policy component in the first network receives, from at least one of a first prioritization service in the first network and the at least one second network, at least one of an incident information or a mutual aid information. The first policy component correlates the mutual aid resource with obtained incident information and assigns a same priority to the network resource and the mutual aid resource.

Method and apparatus for supporting cross jurisdictional mutual aid requests

A centralized quality of service (QoS) entity having a processing device performs a method for managing QoS settings for group communications. The method includes: determining a plurality of active participants of a group communication session; and determining, for each active participant, an individual QoS setting, including a first individual QoS setting for a first active participant. The method further includes modifying the first individual QoS setting based on the individual QoS setting for at least one other active participant, wherein the modified first individual QoS setting is applied to a session leg used by the first active participant during the group communication session. The active participants of the group communication session can be on the same or heterogeneous wireless networks.

Method and apparatus for managing quality of service settings for group communications

Critical resource data () required for a group call can be identified. Controlling () and secondary () PTT communications systems can communicate using an expanded network-to-network interface (NNI) (). Allocation of identified critical resources () can be requested () for the group call from the secondary PTT communications system (). In response to a successful allocation of the requested critical resources by the secondary PTT communications system, the group call can be authorized by the controlling PTT communications system (). The allocated critical resources of the secondary PTT communications system () can be used to establish the group call.

Method and apparatus for ensuring critical resource allocation for group calls made in a push-to-talk communication environment

Disclosed herein are embodiments of a method and embodiments of an apparatus for mitigating physical uplink control channel (PUCCH) interference in Long Term Evolution (LTE) systems. In an embodiment, a wireless-communication device receives downlink transport blocks and responsively transmits corresponding acknowledgement messages via the PUCCH. The device determines that an excessive number of unsolicited (i.e., already-acknowledged) retransmitted downlink transport blocks has been received, and responsively: transmits a scheduling-request message via a random access channel (RACH) and obtains a physical uplink shared channel (PUSCH) scheduling grant, accesses pseudo uplink data, annexes uplink-feedback data to the pseudo uplink data, and transmits the pseudo uplink data and annexed uplink-feedback data via the PUSCH in accordance with the obtained PUSCH scheduling grant.

Method and apparatus for mitigating physical uplink control channel (PUCCH) interference in long term evolution (LTE) systems

A communication system minimizes inter-cell interference and handover holes by providing for a user equipment (UE) to monitor downlink signals from a serving, boundary eNodeB and one or more neighbor eNodeBs, determine a signal quality metric (SQM) for each monitored signal to produce an SQM associated with each eNodeB, and determine a maximum uplink transmit power level (PMAX) for each eNodeB. Based on the determined SQMs and PMAXs, the UE determines a eNodeB of the one or more neighbor eNodeBs with a best SQM and, in response to determining that the neighbor eNodeB of the one or more neighbor eNodeBs with a best SQM is a high power eNodeB, determines a difference between the SQM associated with the high power ENodeB and the SQM associated with the boundary eNodeB. The UE then sets a PMAX for the UE based on the difference determination.

Method and apparatus for uplink power control in an orthogonal frequency division multiple access communication system

Methods and apparatus are provided for detecting interference between spectrally distinct wireless communication networks. A first base station in a first network communicates with a first mobile device at a first frequency, and a second base station communicates at a second frequency with a second mobile device geographically co-located with the first mobile device. The power level of an interfering signal received at the first base station from the second mobile device may be estimated by sharing information between the two networks through an interoperability gateway. The path loss of a reference signal transmitted from the first mobile device to its base station is communicated to the gateway, along with a parameter associated with the transmit power level of the interfering signal. Based on this parameter and the reference signal path loss, the received power level of the interfering signal may be inferred.

Methods and apparatus for detecting and mitigating radio interference among user equipment and base stations of geographically co-located and spectrally distinct wireless systems

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Wilmette, IL, United States of America

Ethan Y Chen