摘要:
The subnets of a radio network are separated by different scrambling codes. A signalling frame comprises information concerning the spreading code used on the neighbouring or second subnet which can therefore be reserved for a multi hop connection in the first subnet as well. Therefore, in the easiest case the forwarding device only needs to change the scrambling code of the data flow to that of the following subnet and can keep the same spreading code.
摘要:
Method for reservation of a medium in a radio communication network for data transmission between stations (A-E) of the network comprising at least one station (A, B, E) operating according to a first protocol (DRP) and a second station (C, D) operating according to a second protocol (802.11), the method comprises the steps of: providing a contention free period (23) within the first and second protocol; performing the reservation of the medium for the first station (A, B, E) according to the first protocol; and performing the reservation of the medium for the second station (C, D) according to the second protocol, announcing the contention free period for the first and second protocol by use of the same signal (21, 22, 31, 33). In particular a beacon signal is used, wherein the beacon includes a signal (488) which is recognized and accepted by the second stations (C, D). Further information (404) is added into the beacon frame (41) for reserving reservation periods (23) for the first stations (A, B, E).
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 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 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:
Method for reservation of a medium in a radio communication network for data transmission between stations (A-E) of the network comprising at least one station (A, B, E) operating according to a first protocol (DRP) and a second station (C, D) operating according to a second protocol (802.11), the method comprises the steps of: providing a contention free period (23) within the first and second protocol; performing the reservation of the medium for the first station (A, B, E) according to the first protocol; and performing the reservation of the medium for the second station (C, D) according to the second protocol, announcing the contention free period for the first and second protocol by use of the same signal (21, 22, 31, 33). In particular a beacon signal is used, wherein the beacon includes a signal (488) which is recognized and accepted by the second stations (C, D). Further information (404) is added into the beacon frame (41) for reserving reservation periods (23) for the first stations (A, B, E).
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 and method for selective data transmission is described. The system includes a sender S and a plurality of receivers (R1-R4). The sender has associated encryption means (24) comprising a plurality of base keys (k1-k4). The receivers (R1-R4) each have associated decryption means (34) each comprising a receiver set of keys, where each receiver set of keys is a subset of the base keys (k1-k4). For secure, selective transmission of data to a first, authorized group of receivers the encryption means are configured to encrypt the data recursively with at least two of said base keys, which are all comprised in the receiver sets of the authorized group of receivers, and where at least one of these keys is not comprised in each receiver set of the non-authorized group of receivers.