Abstract
A method and apparatus are provided for scheduling uplink data transmission in a mobile communication system. The method and apparatus include a base station scheduler for efficiently allocating radio communication resources in a mobile communication system using an E-DCH or DCH. The method and apparatus further include a User Equipment (UE) for using both an E-DCH and a conventional DCH to efficiently select the data rate of the E-DCH and the data rate of the conventional DCH. The method and apparatus can maintain the total transmit power of the UE at the time of retransmission the same as the total transmit power of the UE at the time of initial transmission regardless of the existence or absence of the DCH thereby minimizing the change in the quantity of interference generated in the uplink by the UE.
A method and apparatus are provided for scheduling uplink data transmission in a mobile communication system. The method and apparatus include a base station scheduler for efficiently allocating radio communication resources in a mobile communication system using an E-DCH or DCH. The method and apparatus further include a User Equipment (UE) for using both an E-DCH and a conventional DCH to efficiently select the data rate of the E-DCH and the data rate of the conventional DCH. The method and apparatus can maintain the total transmit power of the UE at the time of retransmission the same as the total transmit power of the UE at the time of initial transmission regardless of the existence or absence of the DCH thereby minimizing the change in the quantity of interference generated in the uplink by the UE.
Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. A method for scheduling uplink data transmission in a mobile communication system supporting an uplink packet data service via a first channel and a second channel, the method comprising the steps of: determining an average data rate for the first channel, ; determining a maximum data rate of the second channel based on a difference between the total radio resource and a radio resource corresponding to the determined average data rate of the first channel; and transmitting scheduling assignment information indicating the determined maximum data rate to a User Equipment (UE), wherein the second channel is subjected to scheduling and the first channel is not subjected to scheduling.
2. The method as claimed in claim 1, wherein the step of determining the maximum data rate of the second channel comprises the steps of: setting the difference between the radio resources as a radio resource assignable to the second channel; and determining the maximum data rate of the second channel for the UE while preventing the radio resource assignable to the second channel from exceeding a maximum radio resource assignable to the second channel within a cell.
3. The method as claimed in claim 1, wherein the total radio resource is provided and controlled by a radio network controller.
4. The method as claimed in claim 1, wherein the average data rate of the first channel is calculated by multiplying a maximum data rate for each UE allocated to the first channel by a corresponding scheduling optimization coefficient.
5. The method as claimed in claim 4, wherein the maximum data rate of the first channel and the scheduling optimization coefficient are provided by a radio network controller.
6. The method as claimed in claim 5, wherein the scheduling optimization coefficient corresponds to a ratio of the average data rate of the first channel with respect to the maximum data rate of the first channel.
7. The method as claimed in claim 1, wherein each of the radio resources is expressed by a Rise over Thermal (RoT) corresponding to uplink data rate or transmit power.
8. The method as claimed in claim 1, wherein the scheduling assignment information comprises a maximum transmissible data rate of the UE comprising the data rate of the first channel and the maximum data rate of the second channel.
9. The method as claimed in claim 1, wherein the scheduling assignment information comprises the maximum data rate of the second channel and the scheduling optimization coefficient of the UE
10. The method as claimed in claim 1, wherein the scheduling assignment information comprises the average data rate of the first channel and the maximum data rate of the second channel
11. The method as claimed in claim 1, wherein the scheduling assignment information comprises a sum of the maximum data rate of the first channel and the maximum data rate of the second channel
12. The method as claimed in claim 1, wherein the scheduling assignment information comprises the maximum data rate of the second channel
13. An apparatus for scheduling uplink data transmission in a mobile communication system supporting an uplink packet data service via a first channel and a second channel, the apparatus comprising: a scheduling signal generator for determining an average data rate expected to be used for the first channel, , determining a maximum data rate of the second channel based on a difference between the total radio resource and a radio resource corresponding to the determined average data rate of the first channel, and generating a scheduling signal indicating the determined maximum data rate; a scheduling signal transmitter for transmitting the generated scheduling signal to a User Equipment (UE); and a scheduling signal transmission controller for controlling the scheduling signal generator and the scheduling signal transmitter so that the scheduling signal can be transmitted at a predetermined scheduling period, wherein the second channel is subjected to scheduling and the first channel is not subjected to scheduling
14. The apparatus as claimed in claim 13, wherein, when the maximum data rate of the second channel is determined, the difference between the radio resources is set as a radio resource assignable to the second channel, and the maximum data rate of the second channel for the UE is determined to prevent the radio resource assignable to the second channel from exceeding a maximum radio resource within a cell
15. The apparatus as claimed in claim 13, wherein the total radio resource is provided and controlled by a radio network controller
16. The apparatus as claimed in claim 13, wherein the average data rate of the first channel is calculated by multiplying a maximum data rate for each UE allocated to the first channel by a corresponding scheduling optimization coefficient
17. The apparatus as claimed in claim 16, wherein the maximum data rate of the first channel and the scheduling optimization coefficient are provided by a radio network controller
18. The apparatus as claimed in claim 17, wherein the scheduling optimization coefficient corresponds to a ratio of the average data rate of the first channel with respect to the maximum data rate of the first channel
19. The apparatus as claimed in claim 13, wherein each of the radio resources is expressed by a Rise over Thermal (RoT) corresponding to uplink data rate or transmit power.
20. The apparatus as claimed in claim 13, wherein the scheduling assignment information comprises a maximum transmissible data rate of the UE comprising the data rate of the first channel and the maximum data rate of the second channel.
21. The apparatus as claimed in claim 13, wherein the scheduling assignment information comprises the maximum data rate of the second channel and the scheduling optimization coefficient of the UE.
22. The apparatus as claimed in claim 13, wherein the scheduling assignment information comprises the average data rate of the first channel and the maximum data rate of the second channel.
23. The apparatus as claimed in claim 13, wherein the scheduling assignment information comprises a sum of the maximum data rate of the first channel and the maximum data rate of the second channel.
24. The apparatus as claimed in claim 13, wherein the scheduling assignment information comprises the maximum data rate of the second channel.
25. A method for transmitting uplink data in a mobile communication system supporting an uplink packet data service, the method comprising the steps of: receiving scheduling assignment information indicating a maximum data rate for a first channel and a second channel; determining a data rate for the first channel based on the maximum data rate; determining a data rate for the second channel based on a difference between the maximum data rate and the data rate of the first channel; and transmitting the uplink data of the first channel and the second channel using the determined data rates, wherein the second channel is subjected to scheduling and the first channel is not subjected to scheduling.
26. The method as claimed in claim 25, further comprising the step of reducing the transmit power corresponding to the data rate of the second channel, so as to prevent transmit power corresponding to the data rates of the first channel and the second channel from exceeding the transmit power limit value of the UE.
27. The method as claimed in claim 25, wherein the step of determining the data rate of the second channel comprises the steps of: determining if a total transmit power is larger than a first transmit power corresponding to the data rate of the first channel when the total transmit power is less than a transmit power limit value; determining a data rate corresponding to a difference between the total transmit power and the first transmit power as a maximum data rate of the second channel when the total transmit power is larger than the first transmit power; and determining the data rate of the second channel within the maximum data rate.
28. The method as claimed in claim 27, further comprising the step of interrupting transmission through the second channel when the total transmit power is not larger than the first transmit power.
29. The method as claimed in claim 25, wherein the step of determining the data rate of the second channel comprises the steps of: determining if the total transmit power is larger than a first transmit power corresponding to the data rate of the first channel when the total transmit power is not smaller than the transmit power limit value; determining a data rate corresponding to a difference between the total transmit power and the first transmit power as a maximum data rate of the second channel when the total transmit power is larger than the first transmit power; and determining the data rate of the second channel within the maximum data rate.
30. The method as claimed in claim 29, further comprising the step of interrupting transmission through the second channel when the total transmit power is not larger than the first transmit power.
31. The method as claimed in claim 25, wherein the scheduling assignment information indicates a maximum data rate of the second channel determined based on a difference between the total radio resource and a radio resource corresponding to an average data rate of the first channel, instead of the maximum data rate for a first channel and a second channel.
32. The method as claimed in claim 25, wherein, in the step of determining the total data rate, the total data rate is acquired directly from the scheduling assignment information.
33. The method as claimed in claim 25, wherein, in the step of determining the total data rate, the total data rate is calculated by acquiring a maximum data rate of the second channel and a scheduling optimization coefficient of the UE from the scheduling assignment information and then adding the maximum data rate of the second channel to a product obtained by multiplying the scheduling optimization coefficient by a maximum data rate of the first channel which is received from the radio network controller.
34. The method as claimed in claim 33, wherein the scheduling optimization coefficient corresponds to a ratio of the average data rate of the first channel with respect to the maximum data rate of the first channel.
35. The method as claimed in claim 25, wherein, in the step of determining the total data rate, the total data rate is calculated by acquiring an average data rate of the first channel and a maximum data rate of the second channel from the scheduling assignment information and then adding the maximum data rate of the second channel and the average data rate of the first channel.
36. The method as claimed in claim 25, wherein, in the step of determining the total data rate, a sum of a maximum data rate of the first channel and a maximum data rate of the second channel is acquired from the scheduling assignment information and the sum is set as the total data rate.
37. The method as claimed in claim 25, wherein, in the step of determining the total data rate, the total data rate is calculated by acquiring a maximum data rate of the second channel from the scheduling assignment information and then adding the maximum data rate of the second channel to a maximum data rate of the first channel which is determined based on a Transport Format Combination Set (TFCS) received from the radio network controller.
38. An apparatus for transmitting uplink data in a mobile communication system supporting an uplink packet data service, the apparatus comprising: a scheduling assignment information receiver for receiving scheduling assignment information indicating a maximum data rate for a first channel and a second channel; a controller for determining a data rate for the first channel based on the maximum data rate and determining a data rate for the second channel based on a difference between the maximum data rate and the data rate available of the first channel; and a transmitter for transmitting the uplink data of the first channel and the second channel using the determined data rate, wherein the second channel is subjected to scheduling and the first channel is not subjected to scheduling.
39. The apparatus as claimed in claim 38, further comprising a transmit power controller for reducing the transmit power corresponding to the data rate of the second channel, so as to prevent transmit power corresponding to the data rates of the first channel and the second channel from exceeding the transmit power limit value of the UE.
40. The apparatus as claimed in claim 38, wherein the second channel data rate controller performs: determining if a total transmit power is larger than a first transmit power corresponding to the data rate of the first channel when the total transmit power is less than a transmit power limit value; determining a data rate corresponding to a difference between the total transmit power and the first transmit power as a maximum data rate of the second channel when the total transmit power is larger than the first transmit power; and determining the data rate of the second channel within the maximum data rate.
41. The apparatus as claimed in claim 40, wherein the second channel data rate controller interrupts transmission through the second channel when the total transmit power is not larger than the first transmit power.
42. The apparatus as claimed in claim 38, wherein the second channel data rate controller performs: determining if the total transmit power is larger than a first transmit power corresponding to the data rate of the first channel when the total transmit power is not smaller than the transmit power limit value; determining a data rate corresponding to a difference between the total transmit power and the first transmit power as a maximum data rate of the second channel when the total transmit power is larger than the first transmit power; and determining the data rate of the second channel within the maximum data rate.
43. The apparatus as claimed in claim 42, wherein the second channel data rate controller interrupts transmission through the second channel when the total transmit power is not larger than the first transmit power.
44. The apparatus as claimed in claim 38, wherein the scheduling assignment information indicates a maximum data rate of the second channel determined based on a difference between the total radio resource and a radio resource corresponding to an average data rate of the first channel, instead of the maximum data rate for a first channel and a second channel.
45. The apparatus as claimed in claim 38, wherein the scheduling assignment information receiver acquires the total data rate directly from the scheduling assignment information.
46. The apparatus as claimed in claim 38, wherein the scheduling assignment information receiver calculates the total data rate by acquiring a maximum data rate of the second channel and a scheduling optimization coefficient of the UE from the scheduling assignment information and then adding the maximum data rate of the second chamiel to a product obtained by multiplying the scheduling optimization coefficient by a maximum data rate of the first channel which is received from the radio network controller.
47. The apparatus as claimed in claim 38, wherein the scheduling optimization coefficient corresponds to a ratio of the average data rate of the first channel with respect to the maximum data rate of the first channel.
48. The apparatus as claimed in claim 38, wherein the scheduling assignment information receiver calculates the total data rate by acquiring an average data rate of the first channel and a maximum data rate of the second channel from the scheduling assignment information and then adding the maximum data rate of the second channel and the average data rate of the first channel.
49. The apparatus as claimed in claim 38, wherein the scheduling assignment information receiver acquires a sum of a maximum data rate of the first channel and a maximum data rate of the second channel from the scheduling assignment information and sets the sum as the total data rate.
50. The apparatus as claimed in claim 38, wherein the scheduling assignment information receiver calculates the total data rate by acquiring a maximum data rate of the second channel from the scheduling assignment information and then adding the maximum data rate of the second channel to a maximum data rate of the first channel which is determined based on a Transport Format Combination Set (TFCS) received from the radio network controller.']
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SUMMARY
ClaimChart-EP1756974A1-STO
Patent number:EP1756974A1
Claim Chart Type : SEP Claim Chart
Price: 200 €
Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.