Patent application number | Description | Published |
20080219365 | METHOD OF GROUPING AND MAPPING TRANSMISSION STATIONS IN A WIRELESS NETWORK - A method of mapping transmission stations in a wireless network by grouping the transmission stations such that each transmission station in the same group transmits a sounding signal in the same time symbol. A method of grouping transmission stations in a wireless network includes sorting the transmission stations in descending order according to a number of transmission links of each transmission station that are unmapped, evaluating each transmission station based on how many unmapped transmission links can be mapped if the evaluated transmission station is made to transmit a sounding signal, placing each transmission station into a group, based on the evaluation, until all of the transmission links are mapped or until the maximum number of sounding bands are used, and, if all of the transmission links are not mapped, repeating the sorting, evaluating, and placing for each time symbol until all of the transmission links are mapped. | 09-11-2008 |
20090075588 | METHOD AND APPARATUS FOR CONTROLLING A RELAY STATION IN A MULTI-HOP RELAY NETWORK - A method of controlling a relay station in a cell of a multi-hop relay network in accordance with a one-way propagation delay between a base station in the cell and the relay station. A relay station in a cell of a multi-hop relay network including means for controlling the signal flow between the relay station and the various other stations in the cell in accordance with a one-way propagation delay between a base station in the cell and the relay station. | 03-19-2009 |
20090268678 | METHOD AND APPARATUS FOR AUTOMATIC GAIN CONTROL IN A MOBILE ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) NETWORK - A zone/slot-based automatic gain control method for stations operating in a mobile OFDMA network including receiving an uplink signal, converting the received uplink signal into an analog baseband signal, measuring or calculating a signal strength of the received uplink signal in an uplink zone in an uplink subframe, and adjusting a power level of the analog baseband signal in accordance with the measured or calculated signal strength during either the first cyclic prefix of an uplink zone or the first cyclic prefix in each uplink slot of an uplink zone. | 10-29-2009 |
20090310555 | System And Method For Selecting Channels In Wireless Communication - According to one embodiment, a method for wireless communication includes coupling a base station to a network access device. The network access device provides access to an Internet service provider network. The method also includes determining, at the base station, a plurality of available communication channels of a wireless service provider network that may be utilized to communicate with an endpoint. In addition, the method includes determining, at the base station, at least one interference power measurement for at least one channel of the plurality of channels. Further, the method includes determining, at the base station, at least one average interference power for at least one channel of the plurality of channels utilizing the at least one interference power measurement. The method also includes automatically selecting a channel for communication with the endpoint in response to determining the at least one average interference power. Moreover, the method includes providing the endpoint access to the wireless service provider network utilizing the Internet service provider network via the selected channel. | 12-17-2009 |
20090310565 | System And Method For Selecting Parameters In Wireless Communication - According to one embodiment, a method for wireless communication comprising coupling a base station to a network access device. The network access device provides the base station access to a wireless service provider network via an Internet service provider network. The method includes determining, at the base station, a plurality of available communication channels of the wireless service provider network that may be utilized to communicate with an endpoint. The method also includes determining, at the base station, a plurality of segment power measurements for at least one channel of the plurality of channels. In addition, the method includes automatically selecting, at the base station, a channel and segment index for communication with the endpoint in response to determining the plurality of segment power measurements. Further, the method includes providing, by the base station, the endpoint access to the wireless service provider network utilizing the Internet service provider network via the selected channel and segment index. | 12-17-2009 |
20090310584 | Self Organizing Network - A method for implementing a self organizing network includes establishing a connection between a femto base station and a network access device operable to provide the femto base station with Internet access. The method also includes establishing a backhaul connection between the femto base station and a wireless service provider's network via the Internet. The method further includes synchronizing the femto base station with a wireless network via the backhaul connection. The method additionally includes receiving initial wireless parameters from the wireless service provider's network via the backhaul connection. The method also includes determining whether wireless operation is possible, and upon determining wireless operation is possible, operating within the wireless network. | 12-17-2009 |
20090312022 | Self Organizing Network - A method for implementing a self organizing network includes establishing a connection between a femto base station and a network access device operable to provide the femto base station with Internet access. The method also includes establishing a backhaul connection between the femto base station and a wireless service provider's network via the Internet. The method further includes establishing a wireless connection with one or more endpoints via a radio frequency (RF) channel. The method additionally includes transmitting, from the femto base station to the wireless service provider's network, neighborhood RF interference information via the backhaul connection. The method also includes receiving RF channel re-provisioning information from the wireless service provider's network and re-provisioning the RF channel. The method further includes participating in a hand-off procedure to hand-off the endpoints to the re-provisioned RF channel. | 12-17-2009 |
20100061248 | INTERFERENCE MEASURING AND MAPPING METHOD AND APPARATUS FOR WIRELESS NETWORKS USING RELAY STATIONS - Interference levels occurring at one or more stations in a wireless network, where each of said one or more stations is a base station or a relay station. The measured interference levels are mapped by building a first matrix including noise plus interference occurring at each of the one or more stations, respectively, and scheduled transmissions at predetermined times by each relay station respectively are mapped by building a second matrix. The first matrix and the second matrix are multiplied in order to determine the noise plus interference impact upon each base station by each relay station so that a network schedule can be generated in order to increase bandwidth efficiency in the network. | 03-11-2010 |
20100074164 | Communication Systems - A method for transmission of information about downlink and uplink parameters of a intermediate apparatus link in a multi-hop wireless communication system, the system comprising a first node apparatus, a second node apparatus and one or more intermediate apparatuses, each said apparatus being operable to transmit and receive information along a series of links forming a communication path for downlink and uplink communication, the communication path extending between the first node and second node apparatuses via the or each intermediate apparatus, each link comprising either a first node link between the first node apparatus and a said intermediate apparatus or an intermediate apparatus link between a said intermediate apparatus and a said apparatus which is not the first node apparatus, and the system having access to a minimum allocation unit for allocating time and transmission frequency bandwidth, the method comprising: obtaining values of downlink and uplink parameters for a particular intermediate apparatus link; mapping both values onto a single minimum allocation unit and transmitting them towards the first node apparatus. | 03-25-2010 |
20100142436 | Communication Systems - A transmission method for use in a multi-hop wireless communication system is provided. The system includes a source apparatus, a destination apparatus and one or more intermediate apparatuses. The system has access to at least one predetermined transmission introduction sequence and also has access to a time-frequency format for use in assigning available transmission frequency bandwidth during a discrete transmission interval, said format defining a plurality of transmission windows within such an interval. Each window occupies a different part of that interval and has a frequency bandwidth profile within said available transmission frequency bandwidth over its part of that interval. Each said window being assignable for such a transmission interval to at least one of said apparatuses for use in transmission. The method includes, when transmitting a message with a preamble in a particular transmission interval, transmitting the preamble in a first transmission window of that transmission interval. Furthermore, the method includes transmitting the transmission introduction sequence in a second transmission window of that transmission interval other than the first transmission window preferably as control information for use by at least one said intermediate apparatus or the destination apparatus. | 06-10-2010 |
20100172267 | System and Method for Cooperative Data Transfer - A method for cooperative data transfer includes establishing a primary wireless connection with a primary access station. The primary wireless connection uses a primary synchronization channel that is transmitted during a first frame of a super frame. The super frame comprises a plurality of frames. The method also includes detecting a secondary synchronization channel generated by an alternate access station during a subsequent frame of the super frame. The method further includes determining whether the detected secondary synchronization channel has a signal strength greater than a threshold signal strength. The method additionally includes receiving permission to begin a cooperative data transfer operation with both the primary access station and the alternate access station. | 07-08-2010 |
20110086653 | REUSE PATTERN NETWORK SCHEDULING USING INTERFERENCE LEVELS - Interference levels occurring at one or more stations are mapped, and a reuse pattern is generated, based on the mapped interference levels, including one or more reuse sets of stations capable of sharing a transmission resource. The stations within each reuse set are listed in increasing order based on their respective interference levels, and an additional station is added to a reuse set, as long as the cumulative interference level within the reuse set is below a threshold interference level and the additional station is not already listed in another reuse set. A network schedule is updated based on the reuse pattern to increase bandwidth efficiency in the network. | 04-14-2011 |
20130010628 | SYSTEM AND METHOD FOR COOPERATIVE DATA TRANSFER - A method for cooperative data transfer includes establishing a primary wireless connection with a primary access station. The primary wireless connection uses a primary synchronization channel that is transmitted during a first frame of a super frame. The super frame comprises a plurality of frames. The method also includes detecting a secondary synchronization channel generated by an alternate access station during a subsequent frame of the super frame. The method further includes determining whether the detected secondary synchronization channel has a signal strength greater than a threshold signal strength. The method additionally includes receiving permission to begin a cooperative data transfer operation with both the primary access station and the alternate access station. | 01-10-2013 |
20130244640 | MULTIPLE TIME ADVANCE FOR RADIO ACCESS NETWORKS - In an example embodiment, a system may include a mobile terminal. The mobile terminal may be configured to receive a first signal including a first time advance value. The first signal may be transmitted by a first base station. The mobile terminal may be further configured to receive a second signal. The second signal may be transmitted by a second base station. The mobile base station may be further configured to determine a difference in propagation delay between the first and second signals. The mobile terminal may be further configured to determine a second time advance value by correlating the first time advance value with the difference in propagation delay. | 09-19-2013 |
20140064110 | METHOD AND SYSTEM FOR LAST GASP DEVICE IDENTIFICATION - A method for device identification includes determining a mass event has occurred in a wireless network from a reception of a plurality of signals each having a last gasp message, sampling a plurality of mapped zones associated with a base station, identifying which mapped zones are associated with a disconnected endpoint in a zone list, determining a length of time of the mass event, and selectively providing the zone list to identify disconnected endpoints based at least upon the length of time of the mass event. Each mapped zone includes a plurality of wireless device endpoints associated with the mapped zone. The sampling includes determining whether any of a subset of the endpoints associated with the given mapped zone are disconnected from the wireless network. | 03-06-2014 |
20140064111 | METHOD AND SYSTEM FOR LAST GASP DEVICE DETECTION - A method is provided for device detection by a base station comprising receiving a plurality of signals over a preamble subframe from an endpoint. The plurality of signals are attempting to access an access group of the preamble subframe. Additionally, the plurality of signals are received on a random access channel using a wireless network. Further, the plurality of signals have a plurality of last gasp messages (LGMs). The method additionally comprises determining an allowable rate of collisions for the plurality of signals and determining an actual rate of collisions for the plurality of signals. The method includes increasing the size of the access group allocated to the plurality of signals having the plurality of LGMs, based on whether the actual rate of collisions exceeds the allowable rate of collisions. | 03-06-2014 |
20140098660 | METHOD AND SYSTEM FOR OPTIMIZED ACCESS OF A PHYSICAL RANDOM ACCESS CHANNEL - A method for optimized access of a physical random access channel (PRACH) includes sampling a plurality of mapped zones associated with a base station. Each of the mapped zones has a plurality of endpoints. The method further includes determining a subset of disconnected endpoints in the given mapped zone where the disconnected endpoints are disconnected from a wireless network. The method also includes estimating a PRACH load based on the subset of disconnected endpoints. Additionally, based on whether the estimated PRACH load is a pre-determined factor larger than an original PRACH allocation, the method includes increasing the PRACH allocation to accommodate reconnection of the subset of disconnected endpoints in the given mapped zone. | 04-10-2014 |
20140204779 | WIRELESS COMMUNICATION PRECODER DETERMINATION - According to an aspect of an embodiment, a method of determining a precoder for wireless communications may include acquiring first channel information associated with a first channel between a first node of a wireless communication network and a second node of the wireless communication network. The first node may be configured to transmit a first wireless signal in a wireless communication resource to the second node via the first channel. The method may further include acquiring second channel information associated with a second channel between the first node and a third node of the wireless communication network. The third node being may be configured to receive a second wireless signal transmitted in the wireless communication resource. Additionally, the method may include determining a precoder for transmission of the first wireless signal based on the first channel information and the second channel information. | 07-24-2014 |
20140269494 | NETWORK SUPERVISED WIRELESS DEVICE NEIGHBOR DISCOVERY - A method of discovering neighboring wireless devices may include assigning a discovery channel resource to a transmitting wireless device. The transmitting wireless device may accordingly be configured to transmit a neighbor discovery signal based on the discovery channel resource. The method may further include receiving neighbor discovery signal information associated with the neighbor discovery signal as received by a receiving wireless device that may be configured to receive the neighbor discovery signal. Additionally, the method may include directing the transmitting wireless device and the receiving wireless device to participate in device-to-device communication with each other based on the neighbor discovery signal information. | 09-18-2014 |
20140269528 | NETWORK SUPERVISED DEVICE-TO-DEVICE COMMUNICATION - A method of supervising device-to-device communication may include determining that a first wireless device and a second wireless device are configured to communicate with each other through device-to-device communication as a device-to-device pair. The method may further include assigning a pair identifier to the device-to-device pair. The pair identifier may be configured to allow the device-to-device pair to communicate with each other and an access point of a wireless communication network while protecting from eavesdropping. Further, the method may include directing the first wireless device and the second wireless device to use the pair identifier while participating in the device-to-device communication. | 09-18-2014 |
20140274192 | POWER CONTROL OF NEIGHBOR DISCOVERY SIGNALS - A method of adjusting power of a neighbor discovery signal may include determining a maximum transmission power of a transmitting wireless device. The transmitting wireless device may be configured to transmit a neighbor discovery signal to one or more receiving wireless devices. The one or more receiving wireless devices may be discovered neighbor wireless devices of the transmitting wireless device and may be configured to receive the neighbor discovery signal. The method may further include determining a power level of the neighbor discovery signal based on the maximum transmission power of the transmitting wireless device and a number of the discovered neighbor wireless devices. | 09-18-2014 |
20150055570 | RESOURCE ALLOCATION IN MACHINE-TO-MACHINE RADIO ACCESS SYSTEMS - A method may include receiving a communication from each of multiple machine-type communication (MTC) devices in a radio access network at a base station. The radio access network and base station may be configured to support the MTC devices and human operated devices. The method may also include determining that the communications are received from the MTC devices and allocating a first set of downlink resources in a downlink channel for future assignment of downlink data communications from the base station to the MTC devices. The method may also include allocating a first set of uplink resources in an uplink channel for future assignment of uplink data communications from the MTC devices to the base station. | 02-26-2015 |