摘要:
A method for a load distribution control of packet transmission includes calculating bandwidths of individual physical ports at a time when inputted packets are distributed to the plurality of physical ports, using each of a plurality of hash calculation formulas; selecting one of the hash calculation formulas so that the calculated bandwidths of the packets for the respective physical ports may become uniform; and distributing and delivering the packets to the respective physical ports using the updated hash calculation formula.
摘要:
A dynamic memory management method and apparatus wherein an area of a memory is partitioned into a plurality of areas to form memory banks. The different priority classes share the memory banks. A policer (write controller) dynamically assigns input frame data of a plurality of classes having different degrees of priority to memory banks in accordance with the degrees of priority and stores the data there for each priority class. A scheduler (read controller) sequentially reads out the data from the frame data stored in the memory bank assigned to the class having the highest degree of priority and transmits the same. For storage of frame data of a priority of class input in a burst like manner, a plurality of memory banks are assigned to that priority class so as to raise the burst tolerance. By controlling writing and reading of data in units of memory banks, the control can be simplified. Due to this, the efficiency of usage of memory is improved and the write/read control is simplified.
摘要:
In a phase adjusting method and device in which a phase deviation between main signal frames themselves returned from a station end device through an antenna end device to the station end device without using a control signal for the phase adjustment, a reference signal generated in a first device is commonly mapped to respective down main signal frames of a first and a second system to be outputted to a second device, the second device maps, pointer values indicating timings of the reference signal in the respective down main signal frames to respective up main signal frames of the first and the second system to be outputted to the first device, and the first device extracts respective pointer values from the respective main signal frames and adjust frames of the respective up main signal frames based on the respective pointer values.
摘要:
In a phase adjusting method and device in which a phase deviation between main signal frames themselves returned from a station end device through an antenna end device to the station end device without using a control signal for the phase adjustment, a reference signal generated in a first device is commonly mapped to respective down main signal frames of a first and a second system to be outputted to a second device, the second device maps, pointer values indicating timings of the reference signal in the respective down main signal frames to respective up main signal frames of the first and the second system to be outputted to the first device, and the first device extracts respective pointer values from the respective main signal frames and adjust frames of the respective up main signal frames based on the respective pointer values.