Communication Systems for the Mobile Information Society phần 10 pdf

... indication of the loudness of the signal in the sub-band. 340 Communication Systems for the Mobile Information Society send the business card stored in the retrieving device during a request for a business ... button, the headset sends the following command to the audio gateway to open the speech path: ‘at+ckpd=200’. The mobile phone 328 Communication...

Ngày tải lên: 14/08/2014, 09:21

... profiles for different applications 332 Communication Systems for the Mobile Information Society Martin Sauter Nortel Networks, Germany 1 Global System for Mobile Communications (GSM) At the beginning ... channel 2 Communication Systems for the Mobile Information Society Figure 1.1 Switching matrix in a switching center designed for voice communication...

Ngày tải lên: 14/08/2014, 09:21

... go through the authentication phase and the activation of the ciphering for the channel. Only afterwards can the network forward further information to the mobile station as to why the channel ... a timeslot it used for the SACCH. Furthermore, the 25th Figure 1.25 Establishment of a signaling connection 48 Communication Systems for the Mobile Information...

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... call. Communication Systems for the Mobile Information Society Martin Sauter © 2006 John Wiley & Sons, Ltd 62 Communication Systems for the Mobile Information Society again limited to a certain duration. Other ... GPRS 50 Communication Systems for the Mobile Information Society in a next step. Once the new BSC has prepared the speech channel (...

Ngày tải lên: 14/08/2014, 09:21

... device. The web browser for example is one of the most 100 Communication Systems for the Mobile Information Society Once the attach procedure is complete the mobile is authenticated and known to the network. ... for example with the ping command. The following example shows how delay impacts the 110 Communication Systems for the Mobile Informat...

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... evolve the two parts of the network 138 Communication Systems for the Mobile Information Society which two are orthogonal to each other (C2,1 and C2,2). On the third level with four chips, there ... subsystems in parallel. This part of the MAC layer is called the MAC-d (dedicated). Before the frames are forwarded to the physical layer, the MAC layer includes addi...

Ngày tải lên: 14/08/2014, 09:21

... terminal. Therefore, the SGSN simply forwards all incoming data packets from the GGSN to the RNC regardless of the current state of the mobile. If the mobile is currently in either the Cell-PCH or the ... Systems for the Mobile Information Society than the current cell. The RNC can then decide to redirect the data stream to a different cell. As the conce...

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... exchange user information with each other if the client device switches to a new access point. Therefore, all access points 230 Communication Systems for the Mobile Information Society Access Point Terminal Empty ... informed of the location change, it ignores the incoming packets. The change of access points is transparent for the higher layers of the protocol s...

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... replies to the message with a dynamic service addition response (DSA-RSP) message. 262 Communication Systems for the Mobile Information Society Here, information about the burst that contains the MAC ... overview of the 802.16 standard and compares the capabilities and design of the system to other technologies like HSDPA and wireless Communication Systems for...

Ngày tải lên: 14/08/2014, 09:21

... connection, the L2CAP layer can then use this information to reassemble the L2CAP packet from several ACL packets, which is then forwarded to the application layer. 296 Communication Systems for the Mobile ... other in different piconets in the same area without disturbing each other. 292 Communication Systems for the Mobile Information Society handover. In a...

Ngày tải lên: 14/08/2014, 09:21