400 results about "Wireless backhaul" patented technology

The present invention provides a system for operating a power line communications system that is comprised of a plurality of network elements, which may take the form of repeaters, bypass devices, backhaul devices, wireless backhaul devices, enhanced bypass device, communication interface devices and others. In one embodiment, two groups of network elements in the same electrical distribution system are isolated except selected communication link.

A system, method, and software are provided for measuring co-channel interference in a wireless network with particular application for management of resource allocation for Non Line of Sight (NLOS) wireless backhaul in MicroCell and PicoCell networks. Given the difficulty of predicting the mutual interference between multiple links, DownLink and UpLink co-channel interference are characterized between each Hub and each Remote Backhaul Module Unit periodically during active service. Beneficially, the co-channel interference metrics are used as the basis for intelligently and adaptively managing network resources to substantially reduce interference and increase the aggregate data capacity of the network e.g. by grouping of interfering and/or non-interfering links, and managing resource block allocations accordingly, i.e. assigning common resource blocks preferentially to weakly interfering links or groups of links and allocating different resource blocks or orthogonal channels to strongly interfering links or groups of links.

The invention is directed to a wireless network arrangement in which nodes comprise multi-faceted multi-beam antennas and in which wireless backhaul is provided using those multi-faceted multi-beam antennas. In particular, the invention is directed to a wireless communication node comprising: an antenna defining a first wireless coverage area and a second wireless coverage area. The first wireless coverage area extends in a first beam pattern and the second wireless coverage area extends in a second beam pattern and the second beam pattern comprises at least one directional beam having a direction which is variable. Associated apparatus, methods, programs, and subscriber services are also provided.

A method includes establishing, at a positioning beacon, a wireless backhaul connection to a communication network; receiving, at the positioning beacon, scheduling information for a positioning reference signal (PRS) from the communication network over the wireless backhaul; and transmitting, from the positioning beacon, the PRS according to the scheduling information.

Some embodiments of the invention provide an implementation for a multi-hop wireless backhaul network. These embodiments can advantageously be deployed in dense urban areas and/or co-located with wireless access nodes, such as base-stations of a cellular wireless communication system. Preferably wireless links between constituent network nodes are set-up hierarchically. A basic result of this is that peer-to-peer (child-to-child) communication is generally prohibited and circuits are forced to conform to a topology. The multi-hop wireless backhaul network may be used to carry delay sensitive, high-density last mile circuit traffic over Non-Line-Of-Sight (NLOS) broadband radio links. Moreover, some embodiments of the invention provide a method of path-healing for re-routing of circuit traffic from circuits that have experienced catastrophic failures.

A system and method for mounting a plurality of antenna elements onto a cell tower is disclosed. A plurality of antennas are mounted onto a mounting system. The mounting system is configured to attach to a cellular antenna mount using the same physical mounting system as the cellular antenna elements. The plurality of antennas provide multiple point-to-point links that may be used for wireless backhaul links or other applications.

“Tiered” groups of devices (tiered service radios) and/or licenses associated with the devices or users so as to provide a hieratical set of interference protection mechanisms for members of each tier of service are disclosed. Point-to-point and point-to-multipoint data links for any communication application, including wireless backhaul applications, are also disclosed. Exemplary systems, devices, and methods disclosed herein allow for the efficient operation of such a tiered service. Interference protection among tiered service devices belonging to one or more tiers of the service, from other devices within the same tier of service, or devices of other tiers of service, is disclosed. Identification of other devices of the same or differing tiers of service, and interference mitigation between other tiered service devices based upon intercommunication between the devices, and/or via a central registry database, are also disclosed.

A method for wireless backhaul communication between a base station and a relay is disclosed. The base station enables a physical control channel to be set up, separately from the terminal that is used to transmit control information to each relay and the physical downlink control channel that has been set up. The base station can transmit data to the relay based on this control information. In a special embodiment, physical downlink control channel transmissions can be minimized by prescribing in advance the transmission of control information between the base station and the relay.

A method for communicating over a wireless backhaul channel comprising generating a radio frame comprising a plurality of time slots, wherein each time slot comprises a plurality of symbols in time and a plurality of sub-carriers in a system bandwidth, broadcasting a broadcast channel signal comprising a transmission schedule to a plurality of remote units in a number of consecutive sub-carriers centered about a direct current (DC) sub-carrier in at least one of the time slots in the radio frame regardless of the system bandwidth, and transmitting a downlink (DL) control channel signal and a DL data channel signal to a first of the remote units, wherein the DL data channel signal is transmitted by employing a single carrier block transmission scheme comprising a Discrete Fourier Transform (DFT) spreading for frequency diversity.

A system for operating a power line communication system is provided. One embodiment is comprised of a plurality of network elements, which may take the form of repeaters, bypass devices, backhaul devices, wireless backhaul devices, enhanced bypass devices, communication interface devices and others. In one embodiment, two groups of network elements in the same electrical distribution system are isolated except for a selected communication link.

Backhaul traffic reliability is improved in unlicensed spectrum bands by using cross-protocol channel sensing and reservation. Physical carrier sensing may be employed to scan channel quality of a plurality of carriers of an unlicensed spectrum band and select a carrier for use in a wireless backhaul communications link between a first base station and a second base station based on the scanned channel quality. The described features may further include the first base station transmitting a self-addressed reservation frame on the selected first carrier prior to transmission of backhaul data from the first base station to the second base station over the first carrier.

A base transceiver station (BTS) includes a radio access network (RAN) interface for communicating with mobile stations and a backhaul interface for communicating with a backhaul network. A RAN element management system generates RAN status information based on event notifications from the RAN interface. A backhaul element management system generates backhaul status information based on event notifications from the backhaul interface. A correlation engine generates correlated status information for the BTS based on the RAN status information and the backhaul status information. The correlated status information indicates performance of the RAN interface in combination with the backhaul interface. The correlated status information is monitored at a network management system (NMS). The NMS may be used to take corrective actions to address problems identified in the correlated status information.

A method and apparatus is disclosed whereby the scheduling of network transmissions in a wireless backhaul network is determined using a cross-layer optimization algorithm. In a first embodiment, the algorithm assumes a good MAC layer transmit schedule has been provided and computes optimal network layer routes as well as transmit beam patterns and transmit powers in a semi-distributed manner. According to this embodiment, the optimization goal is the throughput from each access point, or node in the network, to the core network. In another embodiment, an independent set of transmitting nodes is determined at the MAC layer in a way such that no link in the set interferes with another link and no link is scheduled to transmit and receive at the same time. According to this embodiment, a column generation algorithm is used to find a maximal weighted independent set and to achieve optimal network transmission throughput.

The present invention relates to a wireless self-backhaul technique in a wireless communication network, especially in a WiMAX network, which implements wireless backhaul between base stations by using radio resources (frequency, sub-band or timeslot) of base stations' own. More specifically, uplink and downlink backhaul channels are formed between a master base station and a slaver base station using base stations' inherent resources and through offsetting the frame start time of the slaver base station for a period of time in relation to the master base station. The slaver base station operates in base station mode during local user access and operates in subscriber station mode during implementing wireless backhaul traffic with the master base station. Therefore, the slaver base station needs to switch between these two operating modes.

User equipment aggregates connections in at least one of a first unlicensed frequency band and a second unlicensed frequency band with a connection in a licensed frequency band to form a wireless backhaul connection to the user equipment. The user equipment selectively allocates a third unlicensed frequency band to a tethering connection.

Techniques are described for backhaul operations in a millimeter wave wireless communication system. A first base station of the millimeter wave wireless communication system identifies an access demand and one or more access communication parameters associated with the first base station. The first base station sends information to a second base station indicative of the access demand and the one or more access communication parameters, and determines one or more backhaul communication parameters associated with the second base station of the millimeter wave wireless communication system. The first base station establishes a wireless backhaul link with the second base station via the millimeter wave wireless communication system. The first base station partitions resources between an access link with one or more user equipments and the established wireless backhaul link based at least in part on the access demand, the one or more access communication parameters, or the backhaul communication parameters.