Communication Systems for the Mobile Information Society phần 1 ppt

... GPRS 11 1 2 .12 Web Browsing via GPRS 11 6 2 .12 .1 Impact of Delay on the Web Browsing Experience 11 6 2 .12 .2 Web Browser Optimization for Mobile Web Browsing 11 9 2 .13 Questions 11 9 References 12 0 3 ... GSM Subsystems 9 1. 6 The Network Subsystem 9 1. 6 .1 The Mobile Switching Center (MSC) 9 1. 6.2 The Visitor Location Register (VLR) 12 1. 6.3 The Home Loca...

Ngày tải lên: 14/08/2014, 09:21

... 25.9 31 [3]. 17 8 Communication Systems for the Mobile Information Society The advantage of this procedure, of course, is simple implementation in the network and in the terminals. However, there ... 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...

Ngày tải lên: 14/08/2014, 09:21

... device 218 Communication Systems for the Mobile Information Society 802.3 (Ethernet) 802 .11 b 802 .11 g 802 .11 a 802.2 Logical Link Control (LLC) IP TCP/UDP 3 2 1 4 Application dependent5–7 Figure 4 .1 The ... then transmitted over the air. Instead of sending a bit with the value of 1 the chip sequence ‘0 ,1, 0,0 ,1, 0,0,0 ,1, 1 ,1 is transmitted. For a bit with...

Ngày tải lên: 14/08/2014, 09:21

... standards. Therefore, it is necessary for example to convert a voice signal for a connection between France and the United States. 20 Communication Systems for the Mobile Information Society Figure 1. 16 ... a timeslot it used for the SACCH. Furthermore, the 25th Figure 1. 25 Establishment of a signaling connection 48 Communication Systems for the Mobile...

Ngày tải lên: 14/08/2014, 09:21

... 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 ... call via the Gs interface 82 Communication Systems for the Mobile Information Society Figure 2 .14 The GPRS state model the GSM c...

Ngày tải lên: 14/08/2014, 09:21

... content for which they would also have to pay on the fixed-line Internet. 11 6 Communication Systems for the Mobile Information Society the MSISDN. PLMN stands for public land mobile network, the ... device. The web browser for example is one of the most 10 0 Communication Systems for the Mobile Information Society Once the attach procedure is...

Ngày tải lên: 14/08/2014, 09:21

... possible of C 1, 1 = (1) C 2 ,1 = (1, 1) C 2 ,1 = (1, 1) C 4 ,1 = (1, 1 ,1, 1) C 4,2 = (1, 1, 1, 1) C 4,3 = (1, 1, 1, 1) C 4,4 = (1, 1, 1, 1) SF = 2 SF = 4 SF = 8 SF = 16 SF = 512 Sub-tree ... evolve the two parts of the network 13 8 Communication Systems for the Mobile Information Society which two are orthogonal to each other (C2 ,1 a...

Ngày tải lên: 14/08/2014, 09:21

... 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 fo...

Ngày tải lên: 14/08/2014, 09:21

... 17 28 17 28 DM3 0 12 1 3872544 DH3 0 18 3 5856864 DM5 0–224 4778363 DH5 0–339 7232576 2-DH1 0–54 3456 3456 2-DH3 0–367 11 744 17 28 2-DH5 0–679 14 485 11 52 3-DH1 0–83 5 31 2 5 31 2 3-DH3 ... 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 Com...

Ngày tải lên: 14/08/2014, 09:21

... 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 ... headset sends the following command to the audio gateway to open the speech path: ‘at+ckpd=200’. The mobile phone 328 Communication Systems for...

Ngày tải lên: 14/08/2014, 09:21