Abstract:
A system for wirelessly transmitting time constant data under a wireless protocol in contemplated. An access point device (12) initiates a reservation of time under a protocol. The transmitting device then downloads the time constant data to the remote devices (14, 16). This can take place as individual transmissions or a single unicast transmission of one block containing all the data for the remote wireless device(s) (14, 16). The access point (12) polls each remote wireless device (14, 16) for constant time data to be sent to the remainder of the network. At the conclusion, the access point (12) gives up the reservation so as to enable the remote wireless devices (14, 16) to use the access point (12) for other forms of data traffic.
Abstract:
The invention relates to a method, bridging device (10), network of devices as well as a computer program product and computer program element for prioritizing transportation of isochronous data streams from a first bus (16) having a first bandwidth to a second bus (18) using a medium (13) having a second medium bandwidth lower than the first bandwidth. The bridging device monitors control traffic relating to data streams originating from devices (20, 22) connected to the buses, polls the registers made available by the devices connected to the buses, prioritizes streams for transfer based on relevant information transported in the bus control traffic and/or made available by the devices connected to a bus and transfers streams over the medium based on the prioritizing. The invention enables prioritizing streams for transportation over a wireless bridge between two data buses that is transparent to devices connected to the buses.
Abstract:
A method of controlling services on a mobile phone network comprises causing a network controller to broadcast a message to all users within a cell on a network requesting a response from users having a specific attribute. Each mobile station which responds to the broadcast sends only an initial message of a standard network contention access procedure directly to the network controller; such that the number of responses may be processed by the network controller without any mobile station identifier being provided to the network controller.
Abstract:
A method for accessing a wireless local area network (WLAN) channel and providing quality of service (QoS) for voice in a system supporting both voice and data services. Under the method, a communication device (302, 303) contends for a medium (channel). Upon identifying a transmit opportunity, the device transmits a voice packet to an access point (AP) (304) and polls the AP for downlink traffic. A low power implementation is feasible because the communication device can sleep, wake up to contend for the medium, transmit a voice packet to the AP, request a voice packet from the AP, transmit an acknowledgement, and go back to sleep.
Abstract translation:一种用于访问无线局域网(WLAN)信道并在支持语音和数据服务的系统中为语音提供服务质量(QoS)的方法。 在该方法下,通信设备(302,303)竞争媒体(频道)。 在识别发送机会后,设备将语音分组发送到接入点(AP)(304)并轮询AP以获得下行链路业务。 低功耗的实现是可行的,因为通信设备可以睡眠,醒来竞争介质,向AP发送语音分组,请求来自AP的语音分组,发送确认并返回休眠。 p >
Abstract:
A system and method are provided for controlling bandwidth allocation in a wireless local area network (wLAN). The method comprises: expressing device bandwidth allocations in terms of a time base; in response to expressing the bandwidth allocation in terms of a time base, monitoring network communications; and, measuring the allocated bandwidths. The method may further comprise: establishing polling schedules in response to the time-based bandwidth allocation; and, de-energizing devices in response to the polling schedules. Expressing device bandwidth allocations in terms of a time base includes establishing: an inter-transmission opportunity (TXOP) interval; and, a TXOP jitter. These fields are supplied in the IEEE 802.11e transmit specification (TSPEC). Then, de-energizing devices in response to the polling schedule includes disengaging transmission and receiving functions in the minimum TXOP intervals between polling events, where the minimum TXOP interval is the inter-TXOP interval minus the TXOP jitter.
Abstract:
A method for smooth handover(off) in synchronization CDMA, MS searching, polling measuring the strength and the relative time offset of the pulse of downlink synchronization signal from multiple cells simultaneously; when it occurs that the strength of downlink synchronization pulse signal is rising above the threshold of the original cell, MS sends uplink synchronization pulse to the target cell by idle access channel; the corresponding BS obtains the information of distance of Ms from the above mentioned uplink synchronization pulse, adjudicates on handover(off) and selects the target cell, matching to the report of measurement of the strength of signal; when MS receives the command of handover(off), interrupting the uplink and the downlink traffic communications with the original cell, based upon the time offset received by downlink synchronization and traffic communication slots assigned to MS by a the system, it directly commences communicating with a new cell.
Abstract:
Methods and apparatus for polling a cluster of devices, which are particularly suited for use in wireless parking systems, are disclosed. An application of the polling method and apparatus to parking enforcement is also disclosed.
Abstract:
In a mesh communication network, a poll request protocol (PRP) is provided in which a special packet is broadcast by the congested node (12) when it is ready to provide services. The controlling node (14) (usually the more congested node) broadcasts a packet to request poll signals from nodes desiring resources of the controlling node(14). The contending nodes (12) then have equal chances to request the services of the controlling node (14) by sending poll signals. The controlling node (14) can then arbitrate the requests, determine the most fair and efficient use of its resources, and broadcast a scheduling packet to inform the contending nodes (12) then send their packets to the controlling node (14) without loss packets caused by congestion collisions. The controlling node (14) can then send data to the contending nodes (12) also without lost packets.
Abstract:
A method, communication device, and machine-readable medium. The method includes sending a first poll from a first base station having a smart antenna system to a first user terminal. The first base station receives a first uplink response signal from the first user terminal as a result of the first user terminal successfully receiving the first poll. The first base station also receives at least one other uplink response signals as a result of at least one other remote user terminal successfully receiving a second poll from a second base station. The first base station transmits downlink data to the first user terminal using a downlink smart antenna processing strategy for transmitting to the first user terminal, including mitigating interference to the first and one or more other remote communication devices from which the first base station received a first or other uplink response signal and that may be receiving during transmission of downlink data to the first user terminal. The downlink smart antenna processing strategy is using the first and other received uplink response signals. The first base station uses a first protocol with its associated user terminals and the second base stations uses a second protocol that is coordinated with the first protocol to enable the first base station to receive the first and other uplink response signals from second and one or more other remote communication devices that may be receiving during the step of transmitting downlink data to the first user terminal.
Abstract:
Method and system for controlling access to a communication channel. The method involves calculating an efficiency value for each communication device of a plurality of communication devices, calculating a fairness value for each communication device of the plurality of communication devices, and providing each of the plurality of communication devices with access to the communication channel based on a result of the calculations. The methods considers both efficiency and fairness in deciding which of the plurality of communication devices to select thus providing a system designer with the ability to achieve a good compromise between efficiency and fairness. The system includes a slave tracker within a master communication device for performing the calculations and for deciding which of the plurality of slave communication device to give access to the communication channel.