Patent application number | Description | Published |
20090323562 | CONNECTION CONTROL IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing connection control in a wireless communication system is described. In one embodiment, an apparatus is used in a wireless communication system for communicating with a wireless network, and the apparatus comprises a host processor, a transceiver, a physical interface coupling the host processor and the transceiver; and a memory accessible by the host processor and the transceiver to exchange information between the host processor and the transceiver. The memory has multiple banks that include: a first bank to store information being transferred from the host processor to the transceiver, and a second bank to store information being transferred from the transceiver to the host processor, the second bank being different than the first bank, to facilitate full-duplex communication of packet data between the host processor and the transceiver. | 12-31-2009 |
20090325508 | INITIALIZING A TRANSCEIVER IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for initializing a transceiver in a wireless communication system. In one embodiment, a method for initializing a transceiver that is part of an apparatus for use in a wireless communication system for communicating with WirelessHD devices in a wireless network, where the apparatus comprises a host processor; a transceiver; a physical interface coupling the host processor and the transceiver; and a memory accessible by the host processor and the transceiver to exchange information between the host processor and the transceiver, the initialization method comprising resetting the transceiver by initializing internal hardware and software subsystems of the transceiver; after resetting the transceiver, the transceiver entering a configuration state to configure the transceiver; configuring the transceiver, such that the transceiver is configured as part of initialization; and after configuration, the transceiver entering a wait enable state during which the transceiver waits for its wireless interface to be enabled before wireless operation of the transceiver becomes active. | 12-31-2009 |
20090327239 | BITMAP DEVICE IDENTIFICATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for identifying devices using a bitmap are disclosed. In one embodiment, the method comprises: accessing a memory to obtain one or more bitmaps that map each bit location in the bitmap to an index value, where one index value is assigned to each remote wireless media device of a wireless network in a wireless communication system; and examining those bitmaps and determining at least one characteristic of a remote wireless media device and a device identifier that identifies the remote wireless media device in the wireless network based on the bit position in those bitmaps. | 12-31-2009 |
20090327467 | DEVICE DISCOVERY IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing device discovery in a wireless communication system is described. In one embodiment, a device discovery process is used in a wireless communication system having an apparatus for communicating with WirelessHD devices in a wireless network, where the apparatus comprises a host processor; a transceiver; a physical interface coupling the host processor and the transceiver; and a memory accessible by the host processor and the transceiver to exchange information between the host processor and the transceiver, and the device discovery process comprises: discovering a remote wireless device in the wireless network; notifying, by the transceiver, the host processor of the remote wireless device; requesting, under control of the transceiver, capability information from the remote wireless device prior to receiving a request from the host processor for the capability information; buffering, under control of the transceiver, the capability information before the capability information is requested by the host processor; receiving a capability request from the host processor; and providing the host processor access to the capability information. | 12-31-2009 |
20090327544 | DISPATCH CAPABILITY USING A SINGLE PHYSICAL INTERFACE - An apparatus, system and method for performing dispatch operations using a signal physical interface are disclosed. In one embodiment, the apparatus is for use in a wireless communication system for communicating with a wireless network and comprises a host processor, a transceiver, a physical interface coupling the host processor and the transceiver, and a memory accessible by the host processor and the transceiver to exchange information between the host processor and the transceiver. The transceiver is operable to store data in the memory for the host processor to send data to the host processor using the memory and asserts a control signal to the host processor to notify the host processor that the memory contains data for the host processor, and the host processor is operable to access the memory to obtain the data thereafter. The data is associated with a remote device in the wireless network and is stored as one or more packets at a first storage location in the memory with a first identifier identifying the remote device. | 12-31-2009 |
20090327547 | I2C BUS COMPATIBLE WITH HDMI - An apparatus, system and method are disclosed for using an I2C Bus that is compatible with HDMI. In one embodiment, the apparatus is used in a wireless communication system for communicating with a wireless network, and includes a host processor having an I | 12-31-2009 |
20090327572 | EXCHANGING INFORMATION BETWEEN COMPONENTS COUPLED WITH AN A I2C BUS VIA SEPARATE BANKS - A method and apparatus for exchanging information between components coupled with an a I | 12-31-2009 |
Patent application number | Description | Published |
20090279565 | METHOD AND APPARATUS FOR ADAPTIVE TIME DIVISION MULTIPLEXING ON A MULTI-CHANNEL WIRELINE MEDIUM WITH COLOCATED TRANSCEIVERS - A wireline communications circuit using transceivers compatible with a wireless communications protocol is disclosed using access points and stations in an adaptive Time Division Multiple Access scheme for a multi-channel medium with colocated transceivers. Methods of operating an access point and a station, their implementations as chips and the implementation of a chip for either the access point or station are further disclosed. | 11-12-2009 |
20120063335 | PACKET IDENTIFICATION FOR POWER SAVING IN WIRELESS COMMUNICATION NETWORKS - A network coordinator can assign an association identifier (AID) and/or a group identifier (GID) to identify a client station to which a packet is to be transmitted and to enable the client station to determine whether to receive an incoming packet. The network coordinator can randomly generate a base AID that is representative of the network coordinator and can assign at least one AID to client stations to minimize the probability of client stations associated with proximate network coordinators being assigned the same AIDs. The network coordinator can also randomly assign at least one GID to a group of client stations to minimize the probability of groups of client stations associated with the proximate network coordinators being assigned the same GID. The client station can analyze indications of a received AID and/or received GID to determine whether to receive the packet or whether to switch to an inactive power state. | 03-15-2012 |
20120320772 | COMMUNICATION DEVICES FOR TRANSMITTING DATA BASED ON AVAILABLE RESOURCES - A method for transmitting data by a communication device is described. The method includes determining whether there are sufficient resources available to insert data into an aggregated packet. The method also includes inserting discardable data into the aggregated packet if there are not sufficient resources available to insert the data. The method further includes inserting the data into the aggregated packet if there are sufficient resources available to insert the data. | 12-20-2012 |
20130051441 | System and Method for Improving Channel Efficiency in a Wireless Link - System and method for improving channel efficiency in a wireless link between an access-point transceiver and a first transceiver. The first transceiver may have a first data throughput rate that is lower than the maximum possible data throughput rate of the wireless link. The first transceiver may include a first receive buffer. An indication of the first data throughput rate and a size of the first receive buffer may be received and stored by the access-point transceiver. A first size of a first data packet for transmission to the first transceiver may be determined by the access-point transceiver based on one or more of the first data throughput rate and/or the size of the first receive buffer. The first data packet of the first size may be transmitted to the first transceiver by the access-point transceiver at a data rate that is higher than the first data throughput rate. | 02-28-2013 |
20130089036 | Collision Reduction in a CSMA/CA System - Method for reducing collisions between a first station and a second station in a CSMA/CA system. The method may be performed by the first station. Medium access to transmit to the second station may be obtained according to a first procedure for obtaining medium access. It may be determined that the second station is configured to grant transmit opportunity to the first station. Medium access to transmit to the second station may be obtained according to a second procedure for obtaining medium access based on determining that the second station is configured to grant transmit opportunity to the first station. The first procedure may include contending for medium access, while the second procedure may include delaying contention for medium access relative to the first procedure. | 04-11-2013 |
20130201838 | SYSTEM AND METHOD FOR INFORMATION VERIFICATION BASED ON CHANNEL AWARENESS - This disclosure describes techniques for operating a client device to communicate with a wireless access point to validate data within a frame by comparing channel quality metrics and duration metrics to thresholds. Information received within a validity window may be treated as correctly received even if the frame fails a subsequent verification process or if reception of the frame is terminated prior to the end of the frame. | 08-08-2013 |
20130343250 | SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION IN A WIRELESS COMMUNICATION SYSTEM - A wireless communication device having a root complex, a WLAN module, a power module and an interface linking the root complex and the WLAN module, wherein the root complex is configured to implement a power management policy based upon a latency tolerance value for the WLAN module and wherein the power module is configured to adjust the latency tolerance value based upon receive and transmit parameters of the WLAN module. The power module may be configured to adjust the latency tolerance value on a per-frame basis. | 12-26-2013 |
20140169348 | TRANSMITTER WARM-UP USING DUMMY FRAME GENERATION - An electronic device includes a medium access controller (MAC) to generate frames and transmitter circuitry to convert the frames to radio-frequency (RF) analog signals for transmission. The MAC is to initiate frame generation at a time that precedes initiation of RF analog signal transmission by a specified time period. In a first mode, the MAC is to generate a dummy frame during a first portion of the specified time period and to initiate generation of a transmit frame during a subsequent second portion of the specified time period. Also in the first mode, the transmitter circuitry is to convert the dummy frame into a first analog signal, discard the first analog signal, convert the transmit frame into a second analog signal, and transmit the second analog signal. | 06-19-2014 |
20140219110 | Method And System For Dynamic AMPDU Duration Control In A Wireless Communication System - A method of providing aggregated MAC protocol data unit (AMPDU) duration control in a wireless communication device includes setting an AMPDU duration. Pass/fail statistics are collected for each MPDU of an AMPDU in a time window, W. A packet error rate (PER) difference is calculated between first and last sets of MPDUs for each AMPDU in the window. An average PER difference is calculated across all AMPDUs in the window. When the average PER difference is greater than a first threshold, then the AMPDU duration is decreased. When the difference is less than a second threshold, then the AMPDU duration is increased. When the difference is within the first and the second thresholds, then the method returns to the step of collecting for a next time window. The AMPDU duration can also be adjusted based on detected Doppler and line-of-sight transmissions. | 08-07-2014 |
20140219111 | Method And System For Dual-Mode Rate Control In A Wireless Communication System - A method of performing dual-mode rate control for an access point in a wireless communication system includes a single-user mode of operation and a multi-user mode of operation. In the single-user mode, a basic rate for a station is determined based on channel conditions. In the multi-user mode, a rate for a plurality of stations is determined using tracking. The tracking includes performing a sounding for the plurality of stations. An initial multi-user current rate is then set equal to a function of a number of users and the basic rate. A transmission is sent to the plurality of stations using the current rate. A packet error rate (PER) is detected during transmission to the plurality of stations. The current rate is adjusted based on the PER. After rate adjustment, either sounding is triggered or the method returns to sending a transmission using the current rate. | 08-07-2014 |
20140269962 | SYSTEMS AND METHODS FOR SCHEDULING SU AND MU MIMO TRAFFIC - Systems and methods are disclosed for scheduling SU and MU traffic in a MIMO communications system. Net goodput may be estimated for a station using a plurality of MIMO modes and a transmission to the station may be scheduled using one of the MIMO modes based, at least in part, on the estimated net goodput. Estimating net goodput may include determining a number of bits that may be successfully transmitted to the station using the MIMO mode divided by a time required to transmit the number of bits plus the sounding time. Further, the number of bits that may be successfully transmitted to the station may be based on the number of packets that may be delivered over the upcoming sounding interval and statistically determined goodput for each MIMO mode. | 09-18-2014 |
Patent application number | Description | Published |
20140010102 | PACKET IDENTIFICATION FOR POWER SAVING IN WIRELESS COMMUNICATION NETWORKS - A network coordinator can assign an association identifier (AID) and/or a group identifier (GID) to identify a client station to which a packet is to be transmitted and to enable the client station to determine whether to receive an incoming packet. The network coordinator can determine a base AID that is representative of the network coordinator and can assign at least one AID to client stations to minimize the probability of client stations associated with proximate network coordinators being assigned the same AIDs. The network coordinator can also assign at least one GID to a group of client stations to minimize the probability of groups of client stations associated with the proximate network coordinators being assigned the same GID. The client station can analyze indications of a received AID and/or received GID to determine whether to receive the packet or whether to switch to an inactive power state. | 01-09-2014 |
20140157017 | POWER MANAGEMENT OF COMMUNICATION DEVICES - In some embodiments, a method includes processing, at a communication device, a packet received via a communication media. The method also includes reducing, while the packet is being processed, power to at least one component in the communication device, in response to a condition associated with the processing of the packet being satisfied. The method includes restoring power to the at least one component prior to receiving an entirety of the packet at the communication device. | 06-05-2014 |
20140208138 | SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION - Systems and methods are disclosed for operating an interface of an electronic device in an active mode or a power save mode based, at least in part, on a condition of a data exchange module buffer. When buffer space is available, incoming data may be stored locally and the interface used to access remote memory storage may be in a power save mode. The interface may revert to active mode to transfer data to the remote memory, such as after a configurable reception interval. Outgoing data may also be stored in a buffer, allowing the interface to be in a power save mode with information transmitted from the buffer. | 07-24-2014 |
20140269400 | BROADCASTING SHORT INTERFRAME SPACE INFORMATION FOR LOCATION PURPOSES - A method and apparatus for broadcasting short interframe space information to aid in determining a round trip time are provided. The round trip time is used as an aid in locating nodes within a WiFi or WLAN network. The method begins with capturing a time of transmission of a frame by a transmitting station. The receiving station then captures the time of arrival of the frame just sent by the transmitting station. The receiving station replies with a received frame message and the time of departure is captured. The transmitting station then captures the time of arrival of the received frame message. The captured arrival and departure times of the frame and the received frame message allow the round trip time to be computed. The RTT may then be included as part of a network message. | 09-18-2014 |
20140269964 | SMART ANTENNA ARRAY CONFIGURATION FOR MULTIPLE-INPUT MULTIPLE-OUTPUT COMMUNICATIONS - An access point can include an array of antennas and a smart antenna selector. The smart antenna selector is configured to select a subset of antennas from the antenna array for use in multi-user multiple-input multiple-output (MU MIMO) data transmissions. Stations that are communicatively coupled to the access point can be selected for inclusion in a multi-user group based, at least in part, on performance measurements of the stations. Performance measurements are determined directly and indirectly from data transmissions sent in response to sounding packets. Antennas for use in MU MIMO data transmissions are selected for the antenna array based, at least in part, on previous antenna selections used for single user data transmissions. | 09-18-2014 |
20140335891 | SYSTEMS AND METHODS OF OFFLOADED POSITIONING FOR DETERMINING LOCATION OF WLAN NODES - This disclosure includes systems and methods for determining the location of each of a plurality of STAs of a WLAN where an AP measures the round-trip time (RTT) and the angle of arrival (AOA) to each STA from implicit packet exchange, such as data frame and ACK frame. The AP may then report the RTT and AOA measurements to each STA using a dedicated beacon information element (IE) which multicasts RTT and AOA measurements to the STAs. By employing an additional parameter, namely, angle of arrival AOA, a single AP may compute the two-dimensional location of each associated STA. Further, another beacon IE may multicast mapping of the AIDs to MAC addresses so that the associated STAs can understand such mapping for STAs in a network so that one STA may know the location of other STAs. Encryption may be employed to achieve privacy. | 11-13-2014 |
20140341098 | ACCESS POINT RESPONSE TO PS-POLL - Methods, systems, and devices are described for power conservation in a wireless communications system through efficient transmissions and acknowledgements of information between an AP and a station. The time between a determination by a station to enter a power saving mode and entering network sleep mode by the station may be reduced through a transmission, by an AP, of an MPDU to the station successive to an SIFS after transmission of an acknowledgement to the station of a PS-Poll frame from the station. The time to enter a power saving mode by a station may also be reduced through transmission of A-MPDUs in which a last MPDU of the A-MPDU has an indicator bit cleared to indicate no additional data is to be transmitted. An AP may prevent a retransmission of an MPDU to the station in the absence of an acknowledgement from the station, to further enhance efficiency. | 11-20-2014 |
20140341099 | ACCESS POINT RESPONSE TO PS-POLL - Methods, systems, and devices are described for power conservation in a wireless communications system through efficient transmissions and acknowledgements of information between an AP and a station. The time between a determination by a station to enter a power saving mode and entering network sleep mode by the station may be reduced through a transmission, by an AP, of an MPDU to the station successive to an SIFS after transmission of an acknowledgement to the station of a PS-Poll frame from the station. The time to enter a power saving mode by a station may also be reduced through transmission of A-MPDUs in which a last MPDU of the A-MPDU has an indicator bit cleared to indicate no additional data is to be transmitted. An AP may prevent a retransmission of an MPDU to the station in the absence of an acknowledgement from the station, to further enhance efficiency. | 11-20-2014 |
20150016268 | SYSTEMS AND METHODS FOR DYNAMIC ADAPTATION OF CHANNEL ACCESS OR TRANSMISSION PARAMETERS - Systems and methods for dynamically adapting channel access or transmission parameters based upon an identified channel access parameter or previously used transmission parameter are disclosed. In an aspect, an electronic device for communication over a wireless network is disclosed. The electronic device comprises a processor configured to generate a message that identifies one rule of a plurality of rules. Each of the plurality of rules defines a process for adapting a value of a communication parameter based on an identified channel access parameter. Also, each of the plurality of rules provides a particular quality of service and a particular priority for communication with the electronic device. The electronic device further comprises a transceiver configured to transmit the message to a station. | 01-15-2015 |
20150023245 | MULTI-BAND MANAGEMENT OF WIRELESS RELAYING NETWORKS - Methods, systems, devices, and apparatuses are described for wireless communications in which first type of traffic may be transmitted from a gateway access point (AP) directly to a station. Beacon signals transmitted to the station are transmitted as part of the first type of traffic. A second type of traffic may be transmitted from the gateway AP to the station via at least one relay AP. The first type of traffic may include low-throughput traffic and may be transmitted over a long-range radio link (e.g., 2 GHz band link or sub-1 GHz band link). The second type of traffic may include high-throughput traffic and may be transmitted over at least one short-range radio link (e.g., 5 GHz band link). The gateway AP may receive low-throughput traffic directly from the station and high-throughput traffic from the station via the at least one relay AP. | 01-22-2015 |
20150049679 | METHOD OF ENABLING SINGLE CHAIN RANGING OPERATIONS - A system and method are disclosed for performing ranging operations between two wireless devices without employing cyclic shift diversity (CSD) compensation techniques. For some embodiments, a first wireless device sends a negotiation request frame requesting the second wireless device to respond to subsequently received frames of a specified type using a selected one of the transmit chains in the second wireless device. Thereafter, the first wireless device sends a data frame to the second wireless device to initiate a ranging operation. The second wireless device sends a response frame of the specified type to the first wireless device using the selected one of the transmit chains. | 02-19-2015 |
20150063330 | AGGREGATION OF DATA PACKETS FOR MULTIPLE STATIONS - As one example, an apparatus for wireless communications includes a processing system configured to communicate with several receivers including a first receiver and a second receiver. The processing system is configured to generate an aggregate data packet including several data packets that include a first data packet and a second data packet. The first data packet is destined for the first receiver and the second data packet is destined for the second receiver. The aggregate data packet includes a delimiter that includes a group identifier for determining, at the first receiver, that at least one of the data packets, including the first data packet, is destined for the first receiver. The group identifier is also for determining, at the second receiver, that at least one of the data packets, including the second data packet, is destined for the second receiver. | 03-05-2015 |
20150071084 | SYSTEM AND METHOD FOR INFORMATION VERIFICATION BASED ON CHANNEL AWARENESS - This disclosure describes techniques for operating a client device to communicate with a wireless access point to validate data within a frame by comparing channel quality metrics and duration metrics to thresholds. Information received within a validity window may be treated as correctly received even if the frame fails a subsequent verification process or if reception of the frame is terminated prior to the end of the frame. | 03-12-2015 |
20150071277 | Content Optimization Of A Physical Layer Preamble - Embodiments of the present invention provide for content optimization of a physical layer preamble. In one embodiment of the invention, a method for encapsulating a payload for transmission through a network is disclosed. The method comprises the step of programming a legacy physical layer length value in a legacy physical layer preamble. The legacy physical layer preamble is configured such that it can be received by any legacy stations that may be on the network, and such that a separate physical layer length value can be derived from the legacy physical layer preamble. Using such a system, content optimization of a physical layer preamble is provided. | 03-12-2015 |