Source: https://patents.google.com/patent/US20030086404?oq=5960409
Timestamp: 2018-03-21 10:08:59
Document Index: 300319488

Matched Legal Cases: ['§119', 'art: 16', 'art: 160', 'art: 48', 'art: 480', 'art.\n4', 'art.\n10', 'art.\n11', 'art.\n15', 'art.\n22']

US20030086404A1 - Apparatus and method for transmitting data packets - Google Patents
Apparatus and method for transmitting data packets Download PDF
US20030086404A1
US20030086404A1 US10265692 US26569202A US2003086404A1 US 20030086404 A1 US20030086404 A1 US 20030086404A1 US 10265692 US10265692 US 10265692 US 26569202 A US26569202 A US 26569202A US 2003086404 A1 US2003086404 A1 US 2003086404A1
US10265692
US7352727B2 (en )
The present application hereby claims priority under 35 U.S.C. §119 on European Patent application number 01123334.3 filed Oct. 8, 2001, the entire contents of which are herein incorporated by reference.
When preparing and optimizing the user data, for example voice data streams, various packet-switching-specific protocols, such as IP, TCP, UDP, etc., are executed, the user data part being preceded by control data which are required for routing and for “session setup” in fP-based networks. These control data are not needed for transmitting a data packet via the radio interface of the mobile communications network. For efficient transmission of a data packet, the control data are therefore compressed. This is done by executing suitable algorithms in the PDCP layer of the UMTS protocol architecture, in that case layer 2.
[0030]FIGS. 1A, 1B, 1C and 1D each illustrate a schematic illustration of a data packet, including a control data part and a user data part, in various stages before, during and after transmission of the data packet from a transmission device to a reception device, and
[0031]FIG. 2 illustrates a protocol architecture for processing the data packet from FIG. 1.
In the transmission device's non-UMTS-specific area, individual data packets have control data headers from the RTP, UDP and IP protocols placed at the front of them, since, following transmission via the UMTS radio interface and the mobile radio network into the packet-switching Internet, the data need to be routed to a reception device. The control data headers are placed at the front in the device 2. The resultant order of the data in a data packet is shown in FIG. 1a, where the control data part is formed by the control data headers from the RTP, UDP and IP protocols. The control data part is followed by the user data part.
Control data part: 16 bit 16 bit
User data part: 160 bit 168 bit
Total: 176 bit
Coding rate: ⅓ ⅓ or ½
Control data part: 48 bit 48 bit
User data part: 480 bit 336 bit
Total: 528 bit 384 bit
Transmission interval: 20 ms 20 ms
Transmission data rate: 26400 bit/s 19200 bit/s
In this example, the transmission data rate is thus reduced from 26 400 bit/s to 19 200 bit/s, and hence considerable bandwidth in the transport channels is saved.
3. The apparatus as claimed in claim 1, wherein the transmission device has a generating device for generating a sequence number (SN) which is added both to the control data part and to the user data part.
4. The apparatus as claimed in claim 1, wherein the transmission device includes a compression device for compressing the control data part before the data packet is transmitted, and the reception device has a decompression device for decompressing the control data part after the data packet has been transmitted.
5. The apparatus as claimed in claim 1, wherein the transmission device and the reception device are each equipped with the UMTS protocol architecture.
6. The apparatus as claimed in claim 5, wherein the splitting device is contained in a PDCP layer of a UMTS protocol architecture associated with the transmission device.
7. The apparatus as claimed in claim 5, wherein the various channels of the transmission device are formed by various logical channels provided between an RLC layer which is associated with the PDCP layer, and an MAC layer, and by various transport channels provided between the MAC layer and the physical layer.
8. A method for transmitting a data packet having a control data component and a user data component from a transmission device to a reception device, via channels in a mobile communications network, comprising:
9. The method as claimed in claim 8, wherein, in b), the transmission quality of service for the control data part is different than the transmission quality of service for the user data part.
10. The method as claimed in claim 8, wherein, in a), the data packet has a sequence number generated therefor, which is added both to the control data part and to the user data part.
11. The method as claimed in claim 8, wherein, before b), the control data part is compressed in the transmission device, and, after b), the control data part is decompressed in the reception device.
12. The method as claimed in claim 8, wherein the transmission device and the reception device are each equipped with the UMTS protocol architecture.
13. The method as claimed in claim 12, wherein a) is carried out in a PDCP layer in a UMTS protocol architecture of the transmission device.
14. The apparatus as claimed in claim 2, wherein the transmission device has a generating device for generating a sequence number (SN) which is added both to the control data part and to the user data part.
15. The apparatus as claimed in claim 2, wherein the transmission device includes a compression device for compressing the control data part before the data packet is transmitted, and the reception device has a decompression device for decompressing the control data part after the data packet has been transmitted.
16. The apparatus as claimed in claim 3, wherein the transmission device includes a compression device for compressing the control data part before the data packet is transmitted, and the reception device has a decompression device for decompressing the control data part after the data packet has been transmitted.
17. The apparatus as claimed in claim 3, wherein the transmission device and the reception device are each equipped with the UMTS protocol architecture.
18. The apparatus as claimed in claim 4, wherein the transmission device and the reception device are each equipped with the UMTS protocol architecture.
19. The apparatus as claimed in claim 17, wherein the generating device is contained in a PDCP layer of the transmission device.
20. The apparatus as claimed in claim 18, wherein the compression device is contained in a PDCP layer of the transmission device, and the decompression device is contained in a PDCP layer of the reception device.
21. The method as claimed in claim 9, wherein, in a), the data packet has a sequence number generated for it which is added both to the control data part and to the user data part.
22. The apparatus as claimed in claim 1, wherein the transmission device is a mobile terminal.
23. The apparatus as claimed in claim 1, wherein the reception device is a network control device.
24. The method of claim 8, wherein the transmission device is a mobile terminal.
25. The method of claim 8, wherein the reception device is a network control device.
US10265692 2001-10-08 2002-10-08 Apparatus and method for transmitting data packets Expired - Fee Related US7352727B2 (en)
EP01123334.3 2001-10-08
EP20010123334 EP1301000B1 (en) 2001-10-08 2001-10-08 Channel allocation of control and payload data in wireless communication systems
US20030086404A1 true true US20030086404A1 (en) 2003-05-08
US7352727B2 US7352727B2 (en) 2008-04-01
ID=8178773
US10265692 Expired - Fee Related US7352727B2 (en) 2001-10-08 2002-10-08 Apparatus and method for transmitting data packets
US (1) US7352727B2 (en)
EP (1) EP1301000B1 (en)
DE (1) DE50108473D1 (en)
ES (1) ES2254301T3 (en)
KR101213850B1 (en) 2005-05-23 2012-12-18 마이크로소프트 코포레이션 Separation method of control and data in a wireless network
EP1301000B1 (en) 2005-12-21 grant
US7352727B2 (en) 2008-04-01 grant
DE50108473D1 (en) 2006-01-26 grant
ES2254301T3 (en) 2006-06-16 grant
EP1301000A1 (en) 2003-04-09 application
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BECKMANN, MARK;HANS, MARTIN;ECKERT, MICHAEL;AND OTHERS;REEL/FRAME:014884/0114;SIGNING DATES FROM 20021007 TO 20021016