1. A method for configuring a data transmission interface in a communication network using a transmission protocol for transmission of data in units of grouped data, wherein the transmission interface is the interface between an access network control node and an access node which establishes a communication to a terminal, and wherein the communication network has a topology such that an access node is connected to the access network control node by an intermediate of at least one further access node,
the method comprising:
deriving delay information of the delay experienced by data transmission between a respective network access node and the access network control node;
calculating a delay difference between two consecutive access nodes based on the delay information; and
modifying the delay experienced by data transmission for the respective access node which is identified by the respective smaller delay.
2. A method according to claim 1, wherein:
the modifying comprises increasing delay experienced by data transmission for a respective access node which is identified by a respective smaller delay.
3. A method according to claim 2, wherein:
the delay is increased by an amount of the delay difference.
4. A method according to claim 1, wherein:
the delay experienced by data transmission between a respective access node and the network control node is resultant from a transmission and switching delay component and an adaptation layer delay component.
5. A method according to claim 4, wherein:
the modifying affects the adaptation layer delay component.
6. A method according to claim 4, wherein:
the adaptation layer delay component of the access node of consecutively arranged network access nodes identified by the largest delay is set to a predetermined minimum value.
7. A method according to claim 1, wherein:
the transmission protocol is a packet switched transmission protocol.
8. A method according to claim 1, wherein:
the transmission protocol is a cell switched transmission protocol.
9. A method according to claim 8, wherein:
the transmission protocol is the Asynchronous Transfer Mode ATM.
10. A method according to claim 1, wherein:
the modifying of the delay is accomplished by correspondingly modifying an amount of buffering of data.
11. An apparatus comprising:
an access network control node configured to
derive delay information of the delay experienced by data transmission between the access network control node and a respective network access node,
calculate a delay difference between two consecutive access nodes based on the delay information, and
modify the delay experienced by data transmission for a respective access node which is identified by a respective smaller delay.
12. An apparatus of claim 11, wherein modify the delay comprises increasing delay experienced by data transmission for a respective access node which is identified by a respective smaller delay.
13. An apparatus of claim 12, wherein the delay is increased by an amount of the delay difference.
14. An apparatus of claim 11, wherein the delay experienced by data transmission between a respective access node and the network control node is resultant from a transmission and switching delay component and an adaptation layer delay component.
15. An apparatus of claim 14, wherein the modifying affects the adaptation layer delay component.
16. An apparatus of claim 14, wherein the adaptation layer delay component of the access node of consecutively arranged network access nodes identified by the largest delay is set to a predetermined minimum value.
17. An apparatus of claim 11, wherein the transmission protocol is a packet switched transmission protocol.
18. An apparatus of claim 11, wherein the transmission protocol is a cell switched transmission protocol.
19. An apparatus of claim 18, wherein the transmission protocol is the Asynchronous Transfer Mode ATM.
20. An apparatus of claim 11, wherein the modifying of the delay is accomplished by correspondingly modifying an amount of buffering of data.
21. A system comprising:
an access network control node;
a network access node configured to establishes communication to a terminal; and
a transmission interface configured to interface the access network control node and the network access node using a transmission protocol for transmission of data in units of grouped data, wherein the transmission interface comprises an intermediate access node,
wherein the access network control node is configured to
derive delay information of a delay experienced by data transmission between the access network control node and the network access node,
use the delay information to calculate a delay difference between the access node and the intermediate access node, and
modify the delay experienced by data transmission for a respective access node which is identified by a respective smaller delay.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A high throughput apparatus for multiple sample analysis comprising:
a laser light source;
a lens array configured to focus laser irradiated by the laser light source into a plurality of focused laser beams; and
a focusing unit disposed between the lens array and a sample, the focusing unit configured to focus ions produced from the sample by the plurality of focused laser beams into a plurality of ion beams.
2. The high throughput apparatus for multiple sample analysis according to claim 1, wherein the lens array comprises a plurality of lenses arranged in an array pattern, and wherein each of the plurality of lenses focuses the laser irradiated by the laser light source into the focused laser beam.
3. The high throughput apparatus for multiple sample analysis according to claim 1, wherein the focusing unit comprises:
a plurality of plates spaced apart from each other and arranged to face each other along a direction; and
a plurality of holes formed on each of the plurality of plates and arranged in an array pattern.
4. The high throughput apparatus for multiple sample analysis according to claim 3, wherein the focusing unit focuses the ions produced from the sample into the plurality of ion beams using a power applied to the plurality of plates, and wherein each of the plurality of ion beams passes through each of the plurality of holes.
5. The high throughput apparatus for multiple sample analysis according to claim 4, wherein the plurality of plates comprise:
a plurality of first plates to which a power for accelerating the ions produced from the sample is applied; and
a plurality of second plates to which a power for focusing ions that pass through the plurality of first plates into the plurality of ion beams is applied.
6. The high throughput apparatus for multiple sample analysis according to claim 1, which further comprises an ion trap disposed between the focusing unit and the sample and configured to trap the ions produced from the sample.
7. The high throughput apparatus for multiple sample analysis according to claim 6, wherein the ion trap comprises:
a plurality of first plates spaced apart from each other and arranged to face each other along a direction;
a plurality of first holes formed on each of the plurality of first plates and arranged in an array pattern;
a second plate disposed between the plurality of first plates; and
a plurality of second holes formed on the second plate and arranged in an array pattern.
8. The high throughput apparatus for multiple sample analysis according to claim 7, wherein the ion trap traps the ions produced from the sample using an electromagnetic field applied to the plurality of first plates and the second plate, and wherein each of the plurality of second holes has a diameter larger than that of each of the plurality of first holes.
9. The high throughput apparatus for multiple sample analysis according to claim 6, wherein the ion trap selectively emits the trapped ions according to a power applied to the ion trap.
10. A high throughput method for multiple sample analysis, comprising:
producing a plurality of focused laser beams by focusing laser;
ionizing a sample by irradiating the plurality of focused laser beams to the sample; and
producing a plurality of ion beams by focusing ions, wherein the ions are produced from the sample by the plurality of focused laser beams.
11. The high throughput method for multiple sample analysis according to claim 10, wherein the plurality of focused laser beams and the plurality of ion beams are respectively arranged in an array pattern.
12. The high throughput method for multiple sample analysis according to claim 10, which further comprises, after the ionizing the sample, trapping ions produced from the sample using an ion trap.
13. The high throughput method for multiple sample analysis according to claim 12, which further comprises, after trapping the ions using the ion trap, selectively emitting the trapped ions from the ion trap.