摘要:
A method of carrying SDH services in PON is provided, in which tributary units carrying SDH service data are mapped into payload part of GEM frames, thereby implementing transmission of SDH services in GPON. De-capsulation is performed in reverse process at receiving end. A device of receiving or transmitting SDH services and a method of mapping SDH data frame into PON data frame are also provided. The present invention may be merged with SDH network directly since standard SDH tributary unit structure is adopted, and extraction of virtual containers that includes SDH service data and synchronism can be accomplished conveniently based on pointer adjustment mechanism adopted by tributary units.
摘要:
Systems and methods for distributed overlay multi-channel MAC for wireless ad hoc networks are described. In one aspect, the systems and methods divide channel frequencies defined by a wireless network protocol into a single home channel and multiple guest channels that are orthogonal to the home channel. Each of the network nodes in the ad hoc network operates on the home channel for respective variable and overlapping amounts of time to maintain network connectivity with other respective network nodes. Additionally, each of the network nodes determines whether and when to switch from the home channel to a particular guest channel of the guest channels for a variable amount of time to increase data throughput over one or more corresponding communication links in the ad hoc network with other network node(s).
摘要翻译:描述了用于无线自组织网络的分布式覆盖多信道MAC的系统和方法。 在一个方面,系统和方法将由无线网络协议定义的信道频率划分为单个归属信道和与归属信道正交的多个客户信道。 ad hoc网络中的每个网络节点在归属信道上操作相应的可变和重叠的时间量,以维持与其他各个网络节点的网络连接。 另外,每个网络节点确定是否以及何时何时从客户信道切换到客户信道的特定客体信道一段可变的时间量,以增加具有其他的自组织网络中的一个或多个对应的通信链路上的数据吞吐量 网络节点。
摘要:
A method for dynamic bandwidth allocation in Passive Optical Network (PON), said PON includes a OLT and a plurality of ONUs accessing to the OLT, comprising: classifying traffic which is to be communicated between the OLT and the ONUs into a plurality of service types, and granting a different priority to each type of the services; authorizing service ports of every type of services to transmit service data in descending sequence of said priorities of the services, and recording granting information of the service ports obtained from the authorization; reading out said granting information of every to-be-granted service port of a same ONU; and scheduling granted start time of data transmission of every to-be-granted port of current ONU, generating downlink granting messages including both said granting information and said granted start time of data transmission of every granted port of said current ONU, transmitting said downlink granting messages to said current ONU. This method for bandwidth allocation in the present invention can satisfy requirements of different types of services, increase bandwidth utilization ratio and realize equal bandwidth allocation.
摘要:
A switching power supply controller has a nominal loop gain and transient loop gain that is only activated in response to an abrupt load change in one direction. The transient loop gain may be implemented with a series-connected diode and resistor combination arranged in a feedback configuration with an error amplifier. A large load change in one direction may swing the output of the error amplifier and forward bias the diode to create a non-linear gain change.
摘要:
The present disclosure is related to a method for monitoring upstream burst performance in a point to multi-point access network. The method comprises: determining the expected time of the upstream data burst from the current terminal end (TE) reaching the head end (HE) using the timeslot assigned to the current TE, monitoring the actual time of the upstream data burst from the current TE reaching the HE, calculating and saving the difference between the expected time and the actual time of the upstream data burst from the current TE reaching the HE; calculating and outputting whether the difference is equal to or exceeds the TE's performance index value for the predetermined monitoring terms. The method provided by the present disclosure may monitor upstream burst performance of the entire network and discover the TEs with potential malfunctions, to effectively improve the network's stability.
摘要:
An apparatus for powering an implant includes first energy interface elements, a removeably attachable holding device and a first energy source, such as a battery. An energy conversion circuit converts first energy into second energy which is transmitted within the body of the patient to the implant. Also, an apparatus for providing information to an implant that includes first energy interface elements and a housing that includes a processor operatively coupled to the first energy interface elements and an energy source operatively coupled to the processor. The processor is structured to generate an information signal and cause the signal to be transmitted within the body of the patient for delivery to the implant. Associated methods are also provided.
摘要:
A system and method for transmitting an optical signal. The system includes a first optical transmitter capable of transmitting a first optical signal under one or more first operating conditions, and the first optical signal corresponds to a first wavelength. Additionally, the system includes a second optical transmitter capable of transmitting a second optical signal under one or more second operating conditions, and the second optical signal corresponds to a second wavelength. Moreover, the system includes an optical multiplexer coupled to the first optical transmitter and the second optical transmitter and capable of generating a multiplexed optical signal, a detection component configured to determine at least whether the first optical transmitter satisfies one or more predetermined conditions, and a tunable optical transmitter capable of transmitting a third optical signal. The third optical signal corresponds to a third wavelength.
摘要:
The invention provides transgenic non-human animals and transgenic non-human mammalian cells harboring a transgene encoding an APP polypeptide comprising the Swedish mutation.
摘要:
Systems and methods provide programmable logic block architectures and routing architectures for the programmable logic blocks. For example, in accordance with an embodiment of the present invention, a programmable logic device includes a plurality of programmable logic blocks and a plurality of logic block slices within each of the programmable logic blocks. A first routing circuit provides global signal routing within the programmable logic device for the corresponding programmable logic block. A first input routing circuit receives signals from the first routing circuit and routes the signals to the logic block slices within the corresponding programmable logic block.