摘要:
A fast method for allocating those channels or subcarriers of a multicarrier network to an ahead lying transmission is to let a transmitting terminal and a receiving terminal which intend to access the medium determine the status of the channels or subcarriers that are within their reception range and send a signal indicating the determined status to the corresponding terminal which will select those channels or subcarriers for the eventual transmission which fit best. Other terminals within the transmission range of the transmitting or the receiving terminal respect the reservation and wait for the current transmission to find out which channels or subcarriers are actually used.
摘要:
A fast method for allocating those channels or subcarriers of a multicarrier network to an ahead lying transmission is to let a transmitting terminal and a receiving terminal which intend to access the medium determine the status of the channels or subcarriers that are within their reception range and send a signal indicating the determined status to the corresponding terminal which will select those channels or subcarriers for the eventual transmission which fit best. Other terminals within the transmission range of the transmitting or the receiving terminal respect the reservation and wait for the current transmission to find out which channels or subcarriers are actually used.
摘要:
A method of operating a network node of a network, a network node, a network system, a computer-readable medium, and a program element A method (300) of operating a network node (101-104) of a network system (100), comprising the steps of generating (305) a signal to be transmitted, selecting (310) one of a plurality of communication channels (105-108) of the network system (100) for transmitting the signal, and, in case that the selected channel (105-108) is not ready for transmitting the signal, selecting (345) another one of the plurality of communication channels (105-108) for transmitting the signal.
摘要:
A method of operating a network node of a network, a network node, a network system, a computer-readable medium, and a program element A method (300) of operating a network node (101-104) of a network system (100), comprising the steps of generating (305) a signal to be transmitted, selecting (310) one of a plurality of communication channels (105-108) of the network system (100) for transmitting the signal, and, in case that the selected channel (105-108) is not ready for transmitting the signal, selecting (345) another one of the plurality of communication channels (105-108) for transmitting the signal.
摘要:
Method, frame definitions (300 400 500 700 800 1000 1200 1300 1400) and system for transmission of an aggregation of packets which includes a plurality of Medium Access Control (MAC) Protocol Data Units (MPDUs) or PLCP (Physical Layer Convergence Protocol) Protocol Data Units (PPDUs) intended for one or several receivers and transmitted at one or several different Physical (PHY) rates. In some aspects of the invention, a pre-amble, rsp. mid-amble (415.i 515.i 715.i 815.i 1015.i 1215.i 1315.i) is transmitted in-between each or between multiples of MPDUs or PPDUs allowing receiver devices to go into sleep mode and wake-up during the aggregate or packet burst. Furthermore, information is transmitted at the beginning of the aggregate/packet burst, which allows devices to deduce the position of MPDUs/PPDUs or multiples of MPDUs/PPDUs in the aggregate. MPDUs or PPDUs are grouped in order to enable efficient sleep times of the receiving devices. The receiving devices decode the information at the beginning of the aggregate/burst, fall into sleep-mode and wake up shortly before their packets have to be received.
摘要翻译:方法,帧定义(300 400 500 700 800 1000 1200 1300 1400)以及用于传输分组聚合的系统,包括多个介质访问控制(MAC)协议数据单元(MPDU)或PLCP(物理层会聚协议)协议 数据单元(PPDU),用于一个或多个接收器,并以一个或多个不同的物理(PHY)速率传输。 在本发明的一些方面,一种前缀,rsp。 中间码(415. i 515. i 715. i 815. i 1015. i 1215. i 1315. i)在MPDU或PPDU之间的每个或多个之间传输,允许接收机设备进入睡眠模式, 在聚合或分组突发期间。 此外,在聚合/分组突发的开始处发送信息,这允许设备在聚合中推断出MPDU / PPDU的位置或MPDU / PPDU的倍数。 MPDU或PPDU被分组以便实现接收设备的有效睡眠时间。 接收设备在聚合/突发的开始处对信息进行解码,在分组必须被接收之前不久就会进入休眠模式并唤醒。
摘要:
A system (400), device (401), and method are provided for decentralized medium access control comprising periodic beacon (600) transmissions of all active devices in beacon slots (204) (302) (303), grouping such beacon slots (204) (302) (303) in at least one contiguous dynamic beacon period (301), and expanding or shrinking this at least one contiguous dynamic beacon period (301) depending on the number of occupied beacon slots (204) (302) (303). The dynamic beacon period (301) adapts to devices (401) joining and leaving the network (400) as well as to collisions of beacon frames (600) on the medium (410).
摘要:
The invention relates to a network with several subnetworks, which are organized either decentrally or centrally and can be connected in each case each by bridge terminals, a proxy terminal for a bridge terminal being set up in at least one of the subnetworks, which proxy terminal during an absence (dictated by frequency, time, code, or other factors) of the bridge terminal accepts all data directed to the bridge terminal or to be forwarded thereby, temporarily stores the data, and forwards said data to the bridge terminal when this is present again.
摘要:
A system, apparatus, and method are provided for dynamically selecting the data rate and/or transmit (TX) power The method consists of devices periodically transmitting beacon frames in which they include data rate and/or TX power feedback for all senders of data streams, of which the devices are a receiver. The feedback may consist of recommended values for data rate and/or TX power or of channel state information. A sender chooses data rate and/or transmit power considering the feedback from the one or several receivers of the stream. The invention especially relates to systems based on an Ultra Wide Band Medium Access Control Protocol.
摘要:
In a centralized radio network consisting of several devices one device acts as master or network coordinator and has a transmission range. Basically, other devices of the network are able to adopt the role of a coordinator. This ability is used to enlarge the area of the network to a size larger than the transmission range of the master. A device asks its parent PNC to become a child PNC when a newly turned on device acts as a temporary PNC and broadcasts an initiation beacon indicating that it looks for a child PNC. The child PNC reports that it is available. The new device determines one of the available child PNCs to be its new master. The acknowledgment for the selected child PNC may be broadcasted to inform all the devices in the transmission range of the new device. The new device quits the role of the temporary PNC and associates to the existing network.
摘要:
A system (300), apparatus (301), and method are provided for decentralized medium access control comprising an enhanced protocol for UWB MAC that includes a distributed reservation protocol (DRP) for distributed reservation of the medium (310). The invention also relates to any wireless system (300) that uses a MAC protocol comprising a distributed reservation protocol. The method comprises devices (301) announcing medium reservations in beacons (400) and devices (301) that receive such announcements respecting the reservations.