1663 results about "Radio access technology" patented technology

Coexistence gaps may permit one radio access technology (RAT) to coexists with another RAT by providing period in which one RAT may be silent and another may transmit. Methods may account for the RAT traffic and for the presence of other secondary users in a channel. Methods may be provided to dynamically change the parameters of a coexistence gap pattern, such as the duty cycle, to adapt to both the RAT traffic and the presence of other secondary users. Methods may include PHY methods, such as synchronization signal (PSS / SSS) based, MIB based, and PDCCH based, MAC CE based methods, and RRC Methods. Measurements may be provided to detect the presence of secondary users, and may include reporting of interference measured during ON and OFF durations, and detection of secondary users based on interference and RSRP / RSRQ measurements.

Communication systems and methods are provided allowing a single mode mobile terminal to support mobile assisted signal strength measurement operations in both a fixed frequency reuse based communication network and an adaptive channel allocation based communication network. Candidate base station signal strength measurements are requested by a fixed frequency reuse type network, measured by the mobile terminal and provided to the fixed frequency reuse type network which is seeking to identify a strongest signal for mobile assisted handover operations. In addition, interference signal strength measurements are requested by an adaptive channel allocation type network, measured by the mobile terminal and provided to the adaptive channel allocation type network by the mobile terminal. No redundant circuitry is required in the mobile terminal. Instead, the mobile terminal executes the same operations using the same hardware regardless of whether the requested measurement is of a candidate signal strength or an interference signal.

Various schemes for performing inter-system handoff, e.g., from a UTRAN to a cdma2000 radio access network (RAN) are described. For a MAHHO scheme, the UTRAN uses measurements obtained by a multi-RAT device to determine suitable cdma2000 cell(s) for handover. The measurements are obtained by a candidate frequency search procedure, and the handover is accomplished by a handoff execution procedure. For a MDHHO scheme, the UTRAN relies on location information for the multi-RAT device to select suitable cdma2000 cell(s) for handover. For a CRHHO scheme, a new call is established on the cdma2000 RAN and the pending call on the UTRAN is released in a manner such that the handover appears seamless to the multi-RAT device. The multi-RAT device includes two modem processors that perform processing for the UTRAN and cdma2000 RAN and an application processor that controls the modem processors.

A Common radio resource management method is performed in a mobile radio communication network employing different radio access technologies that overlap over a geographic area subdivided into cells belonging to the domains of respective controllers which are connected to each other in overlapping or adjacent domains and to a core network by means of relevant interfaces. The controllers calculate new traffic-related Information Elements to be exchanged over the existing interfaces to the aim of planning handovers and / or cell reselections towards adjacent cells either of the same or different RAT. Cell capabilities and mobile terminal capabilitiess being also specified by respective IEs. Diversely from the conventional traffic-related IEs based on Cell Load parameters or Free Capacity, the new IEs include indications of the “availability” of bearer services in the cell in terms of maximum bitrate, either guaranteed or not guaranteed, that can currently be allowed to each bearer service.

A method for selecting an alternate wireless communication system for a wireless communication device is disclosed. The method comprises using a first radio access technology (RAT) by a wireless communication device when scanning (202) for an initial wireless communication network (201). The wireless communication device further registers (215) to the initial wireless communication network (201). Then, the initial wireless communication network (201) determines (206) alternate RAT wireless communication network information for the wireless communication device and sends (235) the alternate RAT wireless communication network information to the wireless communication device. The wireless communication device receives the alternate RAT wireless communication network information and selects (240) a first alternate wireless communication network from within the alternate RAT wireless communication network information, scans for the first alternate wireless communication network using an alternate RAT and registers with the first alternate wireless communication network using the alternate RAT.

Aspects of the subject disclosure may include, for example, initiating first and second groups of communication sessions according to testing criteria where the first group of communication sessions is established via a local area wireless access technology utilizing the distributed antenna system and the second group of communication sessions is established via the second radio access technology utilizing the distributed antenna system, and measuring performance data for the first and second groups of communication sessions according to the testing criteria. Other embodiments are disclosed.

A method of managing heterogeneous wireless devices in three or more different types of networks is disclosed. Each type of network uses a different type of radio access technology. The method includes receiving measurement data from a plurality of heterogeneous wireless devices via a control interface, wherein a heterogeneous wireless device provides connections to client devices via one or more of the three or more radio access technologies. The method includes searching, using a processor, for optimized adjustments to one or more parameters associated with one or more of the plurality of heterogeneous wireless devices based at least in part on a set of network optimization goals and the measurement data received from the plurality of heterogeneous wireless devices. The method includes transmitting at least some of the optimized adjustments of the one or more parameters to the one or more of the plurality of heterogeneous wireless devices.

An apparatus and method of cell selection in a wireless network for a device operating on a serving cell. A quality threshold is received. A selected radio access technology is prioritized for reselection if at least one radio access technology neighbor cell meets basic criteria for a suitable cell and a computed value of a signal quality suitability criterion of the radio access technology neighbor cell exceeds the quality threshold.

A wireless communication device (102), a wireless communication network and methods therefor. The wireless communication device (102) comprises a transceiver (202) configured to receive a neighbor list (216) from a remote source (108, 110, 112). The device (102) receives the neighbor list (216) that includes one or more technology type indicators and determines availability of technology based on the neighbor list. The wireless communication network comprise a server (112) and a base station (108, 110) communicating with the server. The server (112) inserts network identification and technology type to the neighbor list (216), and the base (108, 110) station provides the neighbor list to a remote device (102).

According to embodiments of the invention, user equipment (UE) performs inter-radio access technology (RAT) neighbour cell measurements during an idle mode of the UE. The inter-RAT measurement results may be stored in an internal memory of the UE during the Idle mode. When the UE initiates a connection setup, an inter-RAT measurement report containing inter-RAT measurement results obtained during the idle mode is sent to the network at the connection setup. Consequently, the inter-RAT measurement information is immediately available for a network decision at the beginning of the connected mode. For example, an inter-RAT handover can be decided and performed without a delay, based on the inter-RAT measurements made in advance during the idle mode and reported at the connection setup.

In one of its aspects the technology concerns a method of operating a telecommunications system comprising a serving radio base station and a candidate radio base station. The serving radio base station comprises a radio base station to which a wireless mobile station provides measurement reports. The serving radio base station and the candidate radio base station are different with respect to at least one of frequency and radio access technology. The method comprises the serving radio base station allowing the mobile station to obtain information broadcasted by the candidate radio base station. The information is either information for locating Cell Global Identity (CGI) of the candidate radio base station or the Cell Global Identity (CGI) itself of the radio base station. The mobile station obtains the information from the candidate radio base station during at least one reading gap. The reading gap is a time period in which the mobile station does not receive information from the serving radio base station.

A technique is provided for use by a Multi-Radio Management Resource (MRRM) component of a multi-radio wireless communication system for controlling the handover of a mobile terminal between different radio access technologies (RAT). In one example, all suitable RATs having coverage areas currently covering the location of a mobile terminal are identified. The performance gain that might be achieved via a handover to one of the other RATs is then determined by the MRRM based on various performance gain factors. Handover costs that will be incurred as a result of the handover are also explicitly calculated. Then, a cost-adjusted gain is determined by the MRRM based on the performance gain and the handover costs. A handover is only triggered by the MRRM if the cost-adjusted gain exceeds a minimum threshold. The speed and trajectory of the mobile terminal may also be considered.

Communication systems and methods are provided allowing a single mode mobile terminal to support mobile assisted signal strength measurement operations in both a fixed frequency reuse based communication network and an adaptive channel allocation based communication network. Candidate base station signal strength measurements are requested by a fixed frequency reuse type network, measured by the mobile terminal and provided to the fixed frequency reuse type network which is seeking to identify a strongest signal for mobile assisted handover operations. In addition, interference signal strength measurements are requested by an adaptive channel allocation type network, measured by the mobile terminal and provided to the adaptive channel allocation type network by the mobile terminal. No redundant circuitry is required in the mobile terminal. Instead, the mobile terminal executes the same operations using the same hardware regardless of whether the requested measurement is of a candidate signal strength or an interference signal.

An approach is provided for interworking between radio access networks that utilize different radio access technologies. Loading information of a plurality of radio access networks that are accessible by a terminal is determined. A list of candidates from the radio access networks are output based on the loading information for use by the terminal.

Certain aspects of the present disclosure relate to techniques for managing radio link failure recovery for a user equipment (UE) connected to a WWAN and a WLAN. The techniques may include establishing communication with a first radio access technology (RAT) and a second RAT. At least one data flow may be transmitted over each of the first RAT and the second RAT. Determinations may be made as to whether to maintain the at least one data flow over the second RAT when a radio link failure (RLF) is detected at the UE and / or whether to resume the at least one data flow over the second RAT upon RLF recovery. The determinations may be made at the UE, at a network entity in communication with the UE, or some combination thereof.

A multimode wireless receiver circuit (10) includes multi-receiver control and interference detection logic (50) and least two separate receivers: a first receiver (20) associated with a first radio access technology and a second receiver (30) associated with a second radio access technology. The multi-receiver control and interference detection logic (50) simultaneously controls the second receiver (30) to detect an interference blocker signal (100), while the first receiver (20) receives at least a portion of the wireless signal (80) and the interference product signal (90). In response to the second receiver (30) detecting the interference blocker signal (100), the multi-receiver control and interference detection logic (50) adjusts at least one operating condition of the first receiver (20) such that the interference product signal (90) received by the first receiver (20) is reduced.

A wireless multimode radio access technology (RAT) handheld device (100) utilizes first and second wireless radio access technology receivers (108 and 110) includes at least one shared receiver component (120 or 121 or 123) that is within a shared receive path that is shared by both the different RAT receivers (108 and 110) when in a multimode receiver operation. The handheld device (100) includes a radio access technology bypass switch (106) and corresponding logic (112), that controls the RAT bypass switch to bypass the at least one receiver component (120 or 121 or 123) that is shared between the first and second RAT receivers (108 and 110), when the handheld device is in a single RAT receive mode of operation. A method is also disclosed that includes determining (202) if a single RAT receive mode of operation or a multi-RAT receive mode of operation is desired. The method also includes bypassing (204) at least one shared receiver component from a receive path for a corresponding RAT receiver used for the single mode of operation.

An eNodeB (eNB), user equipment (UE) and method of providing a flexible Radio Access Technology (FRAT) are generally described. The information (resource allocation, partition information and numerology) of at least one of a plurality of RATs used by the eNB is provided to a UE. Each RAT has a flexible subcarrier spacing and symbol duration, which are integer multiples of a base subcarrier spacing and symbol duration, and is associated with at least one of different temporal and frequency resources. The symbol and / or frame structure of each RAT are independent. A Transmission Time Interval (TTI) boundary between the RATs is common, and the RATs comprise a common reference TTI duration. The information of the RATs is provided either via a different RAT than the RAT used by the UE for communication or via a dedicated carrier in the RAT used by the UE for communication.

A system and method for indicating signal strength of a multi-mode wireless communication device is disclosed. The wireless communications device simultaneously displays signal strength indicators of multiple radio access technologies on the multi-mode wireless communication device. In an exemplary method, the multi-mode wireless device determines a first signal strength of a first radio access technology and displays the signal strength in a designated annunciator area of a display of the device. The device then determines availability and signal strength for a second radio access technology and further displays a second signal strength indicator in the annunciator area corresponding to the second determined signal strength of the second radio access technology.

The method for wireless resource subframe allocation comprises the following steps: allocation of the control channel based on the first RAT (Radio Access Technology) of the first control domain, which includes the OFDM symbol of the first number from the sub-frame containing multiple OFDM symbols and multiple subcarriers in the frequency domain; allocation of the control channel based on the second RAT of the second control domain including the OFDM symbol of the second number which follows said first control domain; and the allocation of a data channel in the data domain which includes the OFDM symbols positioned outside said first control domain and second control domain. This invention provides a sub-frame structure which is compatible with existing wireless communication systems. This method allows the continued use of existing control channel systems or base signal structures. The method is also capable of supporting advanced features.

In a wireless communication device having a first and a second radio access interface for respectively communicating with a first and a second access network, a method for retrieving content comprises receiving a request for retrieval of content from a remote server and retrieving a first part of the requested content over a first radio access technology connection. When the retrieval of the first part is determined not to meet a required QoS threshold, the second radio access interface is activated. A next part of the requested content to be retrieved is divided into a first portion for retrieval over the first radio access technology connection and a second portion for retrieval over a second radio access technology connection such that retrieval of the first and second portions are estimated to meet the required QoS threshold, and are retrieved over the first and second radio access technology connections, respectively.

In one of its aspects the technology concerns a method of operating a telecommunications system comprising a serving radio base station and a candidate radio base station. The serving radio base station comprises a radio base station to which a wireless mobile station provides measurement reports. The serving radio base station and the candidate radio base station are different with respect to at least one of frequency and radio access technology. The method comprises the serving radio base station allowing the mobile station to obtain information broadcasted by the candidate radio base station. The information is either information for locating Cell Global Identity (CGI) of the candidate radio base station or the Cell Global Identity (CGI) itself of the radio base station. The mobile station obtains the information from the candidate radio base station during at least one reading gap. The reading gap is a time period in which the mobile station does not receive information from the serving radio base station.

A user equipment (UE) monitors coexistence issues of one or more associated communication resources. The UE initiates link recovery procedures (e.g., declaring a Radio Link Failure (RLF)) in response to the monitoring when a coexistence issue is detected. The UE can also access a new channel or a new Radio Access Technology (RAT) in response to initiating the link recovery. The network may have the ability to control whether the UE can initiate the link recovery.

A method of reporting RAT capability for a mobile device of a wireless communication system includes including capability information only associated with a first RAT in a capability reporting message of the first RAT, and transmitting the capability reporting message to a network of a second RAT via the second RAT.

Interference between potentially conflicting radio access technologies (RATs) in a wireless device may be managed through a coexistence manager which allows communication using a first active RAT (e.g., Long Term Evolution (LTE)) and communication with a second active RAT (e.g., wireless local area network (WLAN)) when the first RAT is not scheduled for communicating during an uplink timeslot. Communications by a WLAN radio may be controlled using a power save mode. WLAN communications may be timed so that downlink signals (such as data or acknowledgement messages) to the WLAN radio are received during an inactive uplink subframe for an LTE radio. WLAN communications may also be timed so that downlink signals to the WLAN radio are received during downlink times scheduled for an LTE radio.

A communications system for providing a user's mobile station (MS) with an Internet Protocol (IP) connectivity, has an IP network gateway for allocating an IP address to the MS to enable it to access an IP network. First and second base stations are respectively configured to support communications of the MS over first and second radio access networks using different radio access technologies. A first access gateway provides an interface between the IP network gateway and the first radio access network, whereas a second access gateway provides an interface between the IP network gateway and the second radio access network. A handover interface is provided between the first access gateway and the second access gateway for enabling the MS to switch between the first and second radio access networks with minimum latency.

A method and apparatus for operating in a new radio access technology (NR) carrier in a wireless communication system is provided. A user equipment (UE) receives an indication of a system bandwidth and a center frequency of the system bandwidth from a network, and operates subbands in the NR carrier according to the indication. The center frequency of the system bandwidth corresponds to a direct current (DC) subcarrier.

A method of supporting signal transmission / reception using at least two RATs and apparatus therefor are disclosed. The present invention includes, when a user equipment is simultaneously accessing a 1st base station of a 1st communication network supportive of a 1st RAT and a 2nd base station of a 2nd communication network supportive of a 2nd RAT, receiving a setup message indicating a termination of a connection to the 2nd base station from the 1st base station and terminating the connection to the 2nd base station. Before the connection to the 2nd base station is terminated, the user equipment transceives data for a specific traffic type via the 2nd base station and also transceives data except the specific traffic type via the 1st base station. If the connection to the 2nd base station is terminated, the user equipment transceives the data for the specific traffic type via the 1st base station.

A Common radio resource management method is performed in a mobile radio communication network employing different radio access technologies that overlap over a geographic area subdivided into cells belonging to the domains of respective controllers which are connected to each other in overlapping or adjacent domains and to a core network by means of relevant interfaces. The controllers calculate new traffic-related Information Elements to be exchanged over the existing interfaces to the aim of planning handovers and / or cell reselections towards adjacent cells either of the same or different RAT. Cell capabilities and mobile terminal capabilitiess being also specified by respective IEs. Diversely from the conventional traffic-related IEs based on Cell Load parameters or Free Capacity, the new IEs include indications of the “availability” of bearer services in the cell in terms of maximum bitrate, either guaranteed or not guaranteed, that can currently be allowed to each bearer service.