SYSTEM AND METHOD FOR IMPROVING THE USE OF RADIO SPECTRUM IN TRANSMISSION OF DATA

• US 20090022179A1
• Filed: 07/15/2008
• Published: 01/22/2009
• Est. Priority Date: 07/17/2007
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Gerosa, Marzio, FRECASSETTI, Mario Giovanni, Mirelli, Giacomo
• Granted Patent: US 8,514,775 B2
• Time in Patent Office: Days
• US Class Current: 370/474
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/2491 Mapping quality of service [QoS] requirements between different networks
• CPC Class Codes: H04L 47/365 Dynamic adaptation of the packet size
• CPC Class Codes: H04L 47/38 by adapting coding or compression rate
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

System and method for improving the use of radio spectrum in transmission of data, according to which the payload information of any known line interface is divided into a plurality of data portions of smaller which are then grouped into packets so as to be subsequently radio transmitted. For transmission of such packets, suitable radio channels are selected. The invention also relates to reception of such radio channels having such packets incorporated therein, wherein the received packets are then transformed into payload information for inputting into corresponding line interfaces.

Claims

1. A method of radio transmitting a payload information of a line interface (4) the method comprising the steps of:

dividing the payload into a plurality of data portions,

grouping a data portion so as to form a packet,

selecting an available radio channel, suitable for incorporating said packet in said radio channel,

incorporating at least one packet in the selected radio channel, and

transmitting, said selected radio channel with said at least one packet incorporated in the radio channel.

2. The method of claim 1 further comprising the steps of:

selecting a modulation scheme appropriate for the characteristics of a link budget of said radio transmission

transmitting, said selected radio channel with said at least one packet incorporated in the selected radio channel, based on said selected modulation scheme.

3. A method according to claim 1 further comprising the step of multiplexing the formed packets into a multiplexed packet stream.

4. A method according to claim 1, wherein a further condition for selecting one or more suitable radio channel(s), is that of having a size suitable for incorporating at least one packet in said channel.

5. A method according to claim 3 further comprising a step of dividing the multiplexed packet stream according to a capacity and/or configuration of the selected radio channel, into packets in order to form suitable radio frames to be transmitted through air over the available channel.

6. A method according to claim 2, wherein for selecting a modulation scheme account is taken of a link budget of transmission.

7. A method according to claim 1, comprising the step of distributing the payload of one incoming line interface into more than one radio channels.

8. A method according to claim 1, wherein the radio channels are different in size and/or number.

9. A method according to claim 1, wherein packets formed from one line interface and packets formed from another line interface are merged together.

10. A method according to claim 1, wherein the channels are of different types.

21. A programmable device comprising storage means with a software program recorded thereon, the software program comprising instructions which, when executed on the device, cause the device to carry out the steps of claim 1.

11. A packet processor for transmitting or receiving a payload information of a line interface the packet processor comprising:

a framer for dividing a payload into a plurality of data portions and for grouping a data portion so as to form a packet,

a clock unit for providing a clock signal to said packet,

a packet builder for adding a header to said packet.

12. A transmitter for radio transmitting a payload information of a line interface the transmitter comprising a packet processor according to claim 11.

13. A transmitter according to claim 12 further comprising:

a packet aggregator for multiplexing a plurality of packets formed by said packet processor to form a multiplexed packet stream

a packet allocator for allocating at least one packet from said multiplexed packet stream to one or more available radio channel having a suitable size for having said packet allocated,

a transmitter unit for radio transmitting said available radio channel with said packet allocated to said radio channel.

14. A transmitter according to claim 13, further comprising means for selecting a modulation scheme appropriate for characteristics of a link budget of said radio transmission and means for transmitting said available radio channel with said packet allocated in the one or more available radio channel, based on said selected modulation scheme.

15. A transmitter according to claim 13 wherein said packet allocator is adapted for dividing the multiplexed packet stream according to a capacity and/or configuration of the selected radio channel, into packets in order to form suitable radio frames to be transmitted through air over the available channel.

16. A packet processor according to claim 11 wherein in reception:

the framer is adapted for grouping together data portions corresponding to a specific payload;

the packet builder is adapted for breaking a packet into portions of traffic data, by separating said portions from an overhead of the packet received and adapted for inputting said portions of traffic into the framer.

17. A packet processor according to claim 16 further comprising a clock unit.

18. A receiver, for receiving radio transmission of payload information comprising a packet processor according to claim 16.

19. A receiver according to claim 18 adapted for receiving a radio channel containing at least a packet comprising payload information, and transmitting said payload information to a line interface.

20. A transceiver comprising a transmitter for radio transmitting a payload information of a line interface, and further comprising the receiver of claim 18, wherein said transmitter includes a packet processor for transmitting said payload information, said packet processor comprising:

a framer for dividing a payload into a plurality of data portions and for grouping a data portion so as to form a packet,

a clock unit for providing a clock signal to said packet, and

a packet builder for adding a header to said packet.