查询词典 uplink

The High Speed Uplink Packet Access technology includes Adaptive Modulation and Coding, Hybrid Automatic Repeat Request, and Node B fast scheduling. It also solves the problem of sharing the uplink channel resources for User Equipment.

为了改善上行性能，高速上行分组接入主要考虑的技术包括自适应调制编码、混合自动重传、节点B快速调度，以及用户终端如何共享上行信道资源，同时包括增加增强的媒体访问控制实体，对协议进行增强和优化。

The High Speed Uplink Packet Access technology includes Adaptive Modulation and Coding, Hybrid Automatic Repeat Request, and Node B fast scheduling. It also solves the problem of sharing the uplink channel resources for User Equipment. Moreover, it has Medium Access Control protocol entities (MAC-e and MAC-es) to enhance and optimize the protocol.

为了改善上行性能，高速上行分组接入主要考虑的技术包括自适应调制编码、混合自动重传、节点B快速调度，以及用户终端如何共享上行信道资源，同时包括增加增强的媒体访问控制实体，对协议进行增强和优化。

The invention discloses a data transmitting method, a device and a system in a time division duplex system, which is used to solve the problem in the prior art that downlink data among adjacent cells interfere to uplink data; the method comprises that: a blanket channel of a whole cell or a high-power transmit channel is mapped to OFDM symbols of a downlink time slot in a transmit frame, a guard interval in the transmit frame and the OFDM symbol on a time domain space OFDM symbols which are not mapped to any of the blank channel of the whole cell and the high-power transmit channel; an uplink control channel is mapped to OFDM symbols of an uplink time slot in the transmit frame, the guard interval and the OFDM symbols for mapping the uplink control channel on the time domain space OFDM symbols which are not mapped to uplink control channel; the OFDM symbols of the transmit frame are transmitted; the invention is adopted to avoid the interference between the downlink data and the uplink data among the adjacent cells.

本发明公开了一种时分双工系统中发送数据的方法、装置及系统，用以解决现有技术中邻近小区间的下行数据对上行数据产生干扰的问题；该方法包括将全小区覆盖信道或大功率发射信道映射到传输帧中下行时隙的OFDM符号上，并且所述传输帧中的保护间隔与所述OFDM符号在时域上间隔未映射全小区覆盖信道和大功率发射信道中任一信道的OFDM符号；将上行控制信道映射到所述传输帧中上行时隙的OFDM符号上，并且所述保护间隔与映射上行控制信道的OFDM符号在时域上间隔未映射上行控制信道的OFDM符号；发送所述传输帧的OFDM符号；采用本发明可以避免相邻小区间的下行数据和上行数据之间的干扰。

In order to improve the uplink bandwidth utility, that is, keeping the guard band between conterminous ONU slots as short as possible, as well as avoiding the upstream data collision, OLT must take the RTT of ONU into account, when arranges the start and ending time of ONU's transmission window.

为了提高EPON上行带宽利用率（即尽量缩短相邻ONU时隙之间的保护带长度），同时避免上行数据冲突，OLT在安排给ONU的授权窗口的开始时间和结束时间时，必须要将ONU的距离考虑在内。

WiMAX ; uplink ; power control ; variable step ; convergence factor

WiMAX ；上行链路；功率控制；可变步长；收敛因子

This is life, there are always a lot of regret, it is impossible to always live in the memories, only the end to a new beginning, I could not wait any longer because I did not have too much of the past five years, she has also Besides this there is no significance, a few days ago in North Street City days on the elevator she encountered, I downlink, uplink her, she did not call the sound I do not know her, I have not seen, but not less than 1 meter distance, but also face-to-face, I saw her I saw one, but she did not have any reaction.

人生就是这样，总有很多遗憾，也不可能总是活在回忆里，只有结束，才能从新开始，我也不可能再等了，因为我没有太多的5年来等她，况且这也已经没有任何的意义了，前几天在北城天街电梯上碰到她，我下行，她上行，她都没招呼一声，我也不知道她有没有看到我，可是不到距离不到1米，而且是面对面，我看到她看了我一眼，但是她没有任何的反应。

TD-CDMA system can allocate flexible uplink and downlink timeslot with the need of uplink and downlink traffic, so it is suitable for the multimedial service, and is widely used in microcell which has larger anisomerous uplink and downlink traffic, but in low speed environment, so this system can used to solve the"hot spot"problem in telecom.

而如何根据用户所处的无线环境来调整用户的速率，从而保证整个小区容量的最大化，正是本文研究的主要内容。

Determining whether the time that RNC transmits downlink FP frame is stable or not: if unstable, determining the nonsynchronous reason is that the time that RNC transmits FP frame is unstable and determining whether the time that NodeB transmits uplink FP frame is stable or not: if unstable, determining the unstable reason of transmission channel is that the time that NodeB transmits uplink FP frame is unstable; D.

确定RNC发送下行FP帧的时间稳定或不稳定，在不稳定时将传输信道不同步原因确定为RNC发送下行FP帧的时间不稳定，并确定NodeB发送上行FP帧的时间稳定或者不稳定，在不稳定时将传输信道不稳定原因确定为NodeB发送上行FP帧的时间不稳定；D。

Therefore, the uplink cross-pol interference that we meet is normally caused by the polarization angle mismatch of ground transmitting antennas, or serious overdriven of the uplink power at cross-polarization. And the downlink cross-pol interference is normally caused by the polarization angle mismatch of ground receiving antennas.

因此，常见的反极化干扰通常为，因反极化地面发送天线的极化角失配、或因反极化载波的上行功率严重超标而产生的上行反极化干扰，以及因地面接收天线的极化角失配而产生的下行反极化干扰。

In anFDD wireless system, the duplex spacing between uplink and downlink islarger than the coherence bandwidth of the mobile radio channel, thus theuplink and the downlink small-scale fading is uncorrelated. Moreover, thearray response is correlated with the frequency of the signal carrier. So it isimpossible to resue the uplink weights for downlink beamforming. As aresult, the application of smart antenna for the downlink is a difficult problem.

在频分双工系统中，由于上、下行载波的频率差大于相干频带，上、下行信道衰落是不相关的，而且阵列响应也与信号的载波频率有关，因此，上行信道不能直接用来估计下行信道，故智能天线应用于下行链路是一个难点。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。