1631 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 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).

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.

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.

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.

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 1^st base station of a 1^st communication network supportive of a 1^st RAT and a 2^nd base station of a 2^nd communication network supportive of a 2^nd RAT, receiving a setup message indicating a termination of a connection to the 2^nd base station from the 1^st base station and terminating the connection to the 2^nd base station. Before the connection to the 2^nd base station is terminated, the user equipment transceives data for a specific traffic type via the 2^nd base station and also transceives data except the specific traffic type via the 1^st base station. If the connection to the 2^nd base station is terminated, the user equipment transceives the data for the specific traffic type via the 1^st base station.