A. Ewerlid, "Reliable communication over wireless links," Sweden, April 3-5 2001. Home/Search Document Details and Download
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The Wireless IP Project - Mikael Sternad Signals (Correct)
....may offer only limited improvements when link level retransmission is already in place. They will also require fast migration of information between nodes at hand over. A further aspect that may limit the use of split connection schemes would be an increased use of IP level security and encryption [28]. 4.2 A Simulation Environment for Studying Multilevel Optimization and Interlayer Interaction It is not at all simple to obtain reliable and relevant results when investigating multilayered communication systems working on different time scales. We are therefore making a major effort to create ....
A. Ewerlid, "Reliable communication over wireless links," Sweden, April 3-5 2001.
On Scheduling and Adaptive Modulation in Wireless Communications - Casimiro (2001) (Correct)
....implementations of TCP on either side, and some improvements can be done without such changes. Improvements that do not require changes at the end points, will in some way interfere with the philosophy of end to end connectivity. Di erent approaches to TCP enhancement methods are also compared in [21]. No changes to TCP implementations Indirect TCP In this split connection approach [58] the TCP connection from the xed network is terminated at the base station, and a separate connection is used between the base and the mobile station not necessarily a TCP connection. The second ....
.... recorded in Kista, a suburb outside Stockholm, and they are more thoroughly described in [15, 56] The interaction between such performance enhancing proxies and the present system are not studied in this thesis, but they are a focus of our continuing research within the Wireless IP project [21, 57] With current prediction performance [15, 56] a frame length of 3ms and a prediction range of 6ms would be more reasonable for mobile hosts moving at speeds up to 80km=h Predictor time 10ms 5ms 0(now) past measurements predictions Figure 6.1: Channel SNIR measurements are continuously ....
A. Ewerlid. Reliable Communication over Wireless Links. In Proc. PCC Workshop, Nynashamn, Sweden, Apr. 2001.
Scheduling and Adaptive Transmission for the.. - Ericsson, Falahati, .. (2001) (3 citations) (Correct)
....Work on SNIR prediction in this environment will be pursued in the future. The performance and robustness in the presence of slow fading and SNR variations on a longer time horizon also remains to be studied. Added robustness will here be provided by suitably designed transport protocols [14]. The ideas presented in this paper are the basis for a more complete system proposal in a companion paper [15] ....
A. Ewerlid, "Reliable communication over wireless links," in Proc. Nordic Radio Symposium, Saltsjobaden, Sweden, Apr. 2001.
Hybrid type-II ARQ/AMS and Scheduling using Channel.. - Falahati, Svensson (2001) (2 citations) (Correct)
....a constant QoS and throughput over time horizons characterized by short time fading. The performance and robustness in the presence of slow fading and SNR variations on a longer time horizons remains to be studied. Added robustness will here be provided by suitably design transport protocols [13]. ....
A. Ewerlid, "Reliable Communication over Wireless Links," in NRS'01, Saltsjobaden, Sweden, Apr. 2001.
PCC Wireless IP - Optimizing Throughput and QoS over .. - Sternad, Svensson.. (2001) (2 citations) Self-citation (Ewerlid) (Correct)
....UMTS towards higher data rates. Predictors for broadband channels are a crucial element of our philosophy. We develop such tools based on measurements of 5MHz UMTS channels. The present paper gives a brief outline of our current research. More extensive presentations are given in [1] 2] 3] [4] and [5] at this conference. Additional details are found in the references available through our web site. CHANNEL PREDICTION FOR USE IN FAST LINK ADAPTATION AND SCHEDULING We exploit not only slow fading but also the short term fading of channels to mobile users. The idea is that an 1 This ....
....used over fading radio channels with time varying quality. Packet losses due to channel conditions should not be counteracted as if their cause was congestion in a fixed network. We study various end to end and split connection modifications to TCP that optimize the IP traffic over fading links [4]. One type, a double split connection, is illustrated by Figure 3. These algoritms control the input to the queues in Figure 2. They constitute a flow control system that works on a time scale at least an order of magnitude slower than that of the scheduling algorithm. TCP protocols operating in ....
A. Ewerlid, "Reliable communication over wireless links", Nordic Radio Symposium NRS01, Nynashamn, April 3-5 2001.
The Wireless IP Project - Mikael Sternad Signals (Correct)
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A. Ewerlid, "Reliable communication over wireless links," Sweden, April 3-5 2001.
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