CA2447255A1 - Dynamic channel quality measurement procedure for adaptive modulation and coding techniques - Google Patents
Dynamic channel quality measurement procedure for adaptive modulation and coding techniques Download PDFInfo
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- CA2447255A1 CA2447255A1 CA002447255A CA2447255A CA2447255A1 CA 2447255 A1 CA2447255 A1 CA 2447255A1 CA 002447255 A CA002447255 A CA 002447255A CA 2447255 A CA2447255 A CA 2447255A CA 2447255 A1 CA2447255 A1 CA 2447255A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
Abstract
A wireless digital communication method for communicating between a base station (12) and a plurality of user equipment mobile terminals (UEs 30) and employs adaptive modulation and coding to achieve improved radio resource utilization and provide optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink DL
channel quality measurements only from those mobile terminals (30) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL Channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.
channel quality measurements only from those mobile terminals (30) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL Channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.
Claims (36)
1. A method for optimizing radio resource utilization and adjusting data rates in a wireless digital communications system comprising a base station and plurality of mobile terminals (MTs), said method comprising the steps of:
(a) said base station, upon receipt of blocks of downlink data for transmission to at least one of said MTs, transmits to said MT a request for a channel quality measurement;
(b) said at least one MT receives said request;
(c) said at least one MT measures and reports the downlink channel quality to the base station;
(d) responsive to the channel quality measurement received from said at least one MT, said base station allocates the radio resources;
(e) said base station transmits the blocks of DL data to said at least one MT in accordance with said allocation.
(a) said base station, upon receipt of blocks of downlink data for transmission to at least one of said MTs, transmits to said MT a request for a channel quality measurement;
(b) said at least one MT receives said request;
(c) said at least one MT measures and reports the downlink channel quality to the base station;
(d) responsive to the channel quality measurement received from said at least one MT, said base station allocates the radio resources;
(e) said base station transmits the blocks of DL data to said at least one MT in accordance with said allocation.
2. The method of claim 1 whereby said allocation includes modulation type, coding rate, and timeslot information.
3. The method of claim 1 further including the step of said at least one MT, responsive 'to receipt of said allocation, prepares for reception of downlink data in accordance with said allocation.
4. The method of claim 1 wherein step (a) further includes said base station indicating specific slots for said measurement.
5. The method of claim 4 wherein step (c) further includes said bast station indicating which slots said at least one MT has been allocated for transmission to the base station.
6. The method of claim 1 wherein step (c) further includes said base station indicating the allocated slots to be used by said at least one MT.
7. The method of claim 2 wherein said at least one MT receives a transmission by the base station according to said allocation.
8. A method for optimizing radio resource utilization and adjusting data rates in a wireless digital communications system comprising a base station and plurality of mobile terminals (MTs), said method comprising the steps of:
(a) said base station, upon receipt of blocks of downlink data intended for given ones of said MTs, transmitting to said given MTs a request for a channel quality measurement;
(b) said given MTs performing said requested measurement;
(c) said given MTs transmitting the channel quality measurements to the base station;
(d) responsive to the channel quality measurement data received from the given ones of MTs reporting downlink channel quality, said base station determining preferred ones of the given ones of MTs are capable of making best use of the radio resources;
(e) said base station allocating time slots to be used by the preferred MTs.
(a) said base station, upon receipt of blocks of downlink data intended for given ones of said MTs, transmitting to said given MTs a request for a channel quality measurement;
(b) said given MTs performing said requested measurement;
(c) said given MTs transmitting the channel quality measurements to the base station;
(d) responsive to the channel quality measurement data received from the given ones of MTs reporting downlink channel quality, said base station determining preferred ones of the given ones of MTs are capable of making best use of the radio resources;
(e) said base station allocating time slots to be used by the preferred MTs.
9. A method for optimizing radio resource utilization and adjusting data rates in a wireless digital communications system comprising a base station and plurality of mobile terminals (MTs), said method comprising the steps of:
(a) said base station, upon receipt of blocks of downlink data intended for given MTs, transmitting to given ones of said MTs a request for a channel quality measurement;
(b) said base station determining preferred ones of the given ones of the MTs are capable of making best use of the radio resources responsive to the channel quality measurement data received from the given ones of the MTs reporting downlink channel quality; and (c) said base station allocating a given number of time slots to said preferred MTs according to the channel quality measurement data and the amount of downlink data available for transmission to said given MTs.
(a) said base station, upon receipt of blocks of downlink data intended for given MTs, transmitting to given ones of said MTs a request for a channel quality measurement;
(b) said base station determining preferred ones of the given ones of the MTs are capable of making best use of the radio resources responsive to the channel quality measurement data received from the given ones of the MTs reporting downlink channel quality; and (c) said base station allocating a given number of time slots to said preferred MTs according to the channel quality measurement data and the amount of downlink data available for transmission to said given MTs.
10. A wireless digital communications system comprising a base station and plurality of mobile terminals (MTs), comprising:
(a) said base station, having means for receipt of blocks of downlink data intended for given ones of said MTs and means for transmitting to said given ones of MTs a request for a channel quality measurement;
(b) the given ones of MTs receiving such a request having means for measuring downlink quality and means for reporting the measured downlink channel quality to the base station;
(c) said base station having means for determining preferred ones of the given one of MTs are capable of making best use of the radio resources responsive to the channel quality measurement data received from the given ones of MTs reporting downlink channel quality;
(d) said base station having further means for determining the modulation/coding rate for each preferred MT as a function of the channel quality measurement and for transmitting modulation/coding rate to the preferred MTs according to the channel quality measurement obtained from the respective preferred MT; and (e) said base station transmitting, at the modulation/coding rate specified in (d), blocks of downlink data to the preferred MTs.
(a) said base station, having means for receipt of blocks of downlink data intended for given ones of said MTs and means for transmitting to said given ones of MTs a request for a channel quality measurement;
(b) the given ones of MTs receiving such a request having means for measuring downlink quality and means for reporting the measured downlink channel quality to the base station;
(c) said base station having means for determining preferred ones of the given one of MTs are capable of making best use of the radio resources responsive to the channel quality measurement data received from the given ones of MTs reporting downlink channel quality;
(d) said base station having further means for determining the modulation/coding rate for each preferred MT as a function of the channel quality measurement and for transmitting modulation/coding rate to the preferred MTs according to the channel quality measurement obtained from the respective preferred MT; and (e) said base station transmitting, at the modulation/coding rate specified in (d), blocks of downlink data to the preferred MTs.
11. The system of claim 10 wherein said MTs include means responsive to receipt of the channel allocation and modulation/coding rate information, to prepare for reception of downlink data according to specified channel allocation and modulation/coding rate.
12. A wireless digital communications system comprising a base station and plurality of user equipment (UEs), comprising:
(a) said base station, having means for receiving blocks of downlink data intended for given ones of said UEs and means for transmitting to given UEs a request for a channel quality measurement;
(b) the given ones of UEs receiving such a request having means for measuring downlink channel quality and means for reporting the measured downlink channel quality to said base station;
(c) said base station, responsive to the channel quality measurement data received from the given ones of MTs reporting downlink channel quality, having means for determining preferred ones of the given ones of UEs are capable of making best use of the radio resources; and (d) said base station having further means for allocating the time slots to the preferred UEs.
(a) said base station, having means for receiving blocks of downlink data intended for given ones of said UEs and means for transmitting to given UEs a request for a channel quality measurement;
(b) the given ones of UEs receiving such a request having means for measuring downlink channel quality and means for reporting the measured downlink channel quality to said base station;
(c) said base station, responsive to the channel quality measurement data received from the given ones of MTs reporting downlink channel quality, having means for determining preferred ones of the given ones of UEs are capable of making best use of the radio resources; and (d) said base station having further means for allocating the time slots to the preferred UEs.
13. The system of claim 12 wherein said preferred UEs include means, responsive to receipt of the channel allocation, to prepare for reception of downlink data according to specified channel allocation and modulation/coding rate.
14. A wireless digital communications system comprising a base station (BS) and plurality of user equipment (UEs), comprising:
(a) said BS having means for receiving blocks of downlink data intended for given ones of said UEs and means for transmitting to the given ones of UEs a request for a channel quality measurement;
(b) the given ones of said UEs receiving such a request having means for measuring downlink channel quality and means for reporting the measured downlink channel quality to the BS;
(c) said BS having means for determining preferred ones of the given ones of UEs are capable of making best use of the radio resources, responsive to the channel quality measurement data received from the given ones of UEs reporting downlink channel quality; and (d) said BS having further means for determining a modulation/coding rate for each said preferred ones of UEs as a function of the channel quality measurement and for transmitting said modulation/coding rate to the preferred ones of the UEs.
(a) said BS having means for receiving blocks of downlink data intended for given ones of said UEs and means for transmitting to the given ones of UEs a request for a channel quality measurement;
(b) the given ones of said UEs receiving such a request having means for measuring downlink channel quality and means for reporting the measured downlink channel quality to the BS;
(c) said BS having means for determining preferred ones of the given ones of UEs are capable of making best use of the radio resources, responsive to the channel quality measurement data received from the given ones of UEs reporting downlink channel quality; and (d) said BS having further means for determining a modulation/coding rate for each said preferred ones of UEs as a function of the channel quality measurement and for transmitting said modulation/coding rate to the preferred ones of the UEs.
15. The method of claim 14 wherein said preferred UEs include means, responsive to receipt of the channel allocation to prepare for reception of downlink data according to specified channel allocation and modulation/coding rates.
16. A method for optimizing radio resource utilization and adjusting data rates in a wireless digital communications system comprising a base station (BS) and plurality of user equipment (UEs), said method comprising the steps of:
(a) said BS, upon receipt of blocks of downlink data for transmission to at least one of said UEs, transmits to said UE a request for a channel quality measurement;
(b) said at least one UE receives said request;
(e) said at least one UE measures the downlink channel quality;
(d) said at least one UE reports the downlink channel quality to the BS;
(c) responsive to the channel quality measurement received from said at least one UE, said BS allocates the radio resources;
(f) said BS transmits to said at least one UE in accordance with said allocation.
(a) said BS, upon receipt of blocks of downlink data for transmission to at least one of said UEs, transmits to said UE a request for a channel quality measurement;
(b) said at least one UE receives said request;
(e) said at least one UE measures the downlink channel quality;
(d) said at least one UE reports the downlink channel quality to the BS;
(c) responsive to the channel quality measurement received from said at least one UE, said BS allocates the radio resources;
(f) said BS transmits to said at least one UE in accordance with said allocation.
17. The method of claim 16 wherein step (a) further includes said BS
indicating specific required slots for said channel quality measurement.
indicating specific required slots for said channel quality measurement.
18. The method of claim 16 wherein said allocation step includes modulation type, coding rate, and timeslot information.
19. The method of claim 16 further comprising the step of said UEs, responsive to receipt of said allocation, prepare for reception of downlink data in accordance with said allocation.
20. The method of claim 16 wherein step (e) includes said BS
transmitting said allocation to said UE.
transmitting said allocation to said UE.
21. The method of claim 16 wherein step (c) includes said BS prioritizing said UEs from highest channel quality to lowest channel quality, and allocating slots first to the UEs reporting the highest quality channel.
22. The method of claim 21 wherein the UEs receive a transmission from said BS according to the allocation.
23. A method for optimizing radio resource utilization in a wireless digital communications system comprising a base station (BS) and plurality of user equipment (UEs), said method comprising the steps of:
(a) said BS receiving at least one block of downlink (DL) data;
(b) said BS determining the specific UE to which the block of data is destined;
(c) said BS transmitting to said specific UE a request for a DL
channel quality (CQ) measurement;
(d) said UE performing a measurement of the DL CQ;
(e) said UE transmitting said measurement to said BS;
(f) said BS prioritizing and allocating radio resources based upon said measurement;
(g) said BS transmitting said allocation to the UE;
(h) said UE adjusting in response to said allocation;
(i) said BS transmitting said DL data in accordance with said allocation; and (j) said UE receiving said DL data.
(a) said BS receiving at least one block of downlink (DL) data;
(b) said BS determining the specific UE to which the block of data is destined;
(c) said BS transmitting to said specific UE a request for a DL
channel quality (CQ) measurement;
(d) said UE performing a measurement of the DL CQ;
(e) said UE transmitting said measurement to said BS;
(f) said BS prioritizing and allocating radio resources based upon said measurement;
(g) said BS transmitting said allocation to the UE;
(h) said UE adjusting in response to said allocation;
(i) said BS transmitting said DL data in accordance with said allocation; and (j) said UE receiving said DL data.
24. A system for optimizing radio resource utilization in a wireless digital communications network comprising a base station (BS) and plurality of user equipment (UEs), said system comprising:
(a) means at said BS for receiving at least one block of downlink (DL) data;
(b) means at said BS for determining the specific UE to which the block of data is destined;
(c) means at said BS for transmitting to said specific UE a request for a DL channel quality (CQ) measurement;
(d) means at said UE for performing a measurement of the DL
CQ;
(e) means at said UE for transmitting said measurement to said BS;
(f) means at said BS for prioritizing and allocating radio resources based upon said measurement;
(g) means at said BS for transmitting said allocation to the UE;
(h) means at said UE for adjusting in response to said allocation;
(i) means at said BS for transmitting said DL data in accordance with said allocation; and said UE receiving said DL data.
(a) means at said BS for receiving at least one block of downlink (DL) data;
(b) means at said BS for determining the specific UE to which the block of data is destined;
(c) means at said BS for transmitting to said specific UE a request for a DL channel quality (CQ) measurement;
(d) means at said UE for performing a measurement of the DL
CQ;
(e) means at said UE for transmitting said measurement to said BS;
(f) means at said BS for prioritizing and allocating radio resources based upon said measurement;
(g) means at said BS for transmitting said allocation to the UE;
(h) means at said UE for adjusting in response to said allocation;
(i) means at said BS for transmitting said DL data in accordance with said allocation; and said UE receiving said DL data.
25. A method for optimizing radio resource utilization in a wireless communication system having a base station and a plurality of user equipment, the method comprising the steps of:
transferring blocks of downlink data to the base station, the data designated for transmission to one of the plurality of user equipment;
requesting a downlink channel quality measurement by the base station from the designated user equipment;
measuring the downlink channel quality at the designated user equipment in response to the request from the base station;
reporting the downlink channel quality measurement to the base station;
allocating radio resources by the base station to the designated user equipment based on the reported downlink channel quality measurement; and transmitting the downlink data from the base station to the designated user equipment.
transferring blocks of downlink data to the base station, the data designated for transmission to one of the plurality of user equipment;
requesting a downlink channel quality measurement by the base station from the designated user equipment;
measuring the downlink channel quality at the designated user equipment in response to the request from the base station;
reporting the downlink channel quality measurement to the base station;
allocating radio resources by the base station to the designated user equipment based on the reported downlink channel quality measurement; and transmitting the downlink data from the base station to the designated user equipment.
26. The method according to claim 25, wherein the requesting step includes a request for measurement on a specific radio resource; and the measuring step includes measuring the downlink channel qualify on the specific radio resource.
27. The method according to claim 25, wherein the allocating step includes determining the coding rate, the modulation type, and time slot information.
28. The method according to claim 25, further comprising the steps of:
receiving the radio resource allocation information at the designated user equipment; and setting up the designated user equipment for reception of the downlink data based on the radio resource allocation information, the receiving and setting up steps being performed between the allocating step and the transmitting step.
receiving the radio resource allocation information at the designated user equipment; and setting up the designated user equipment for reception of the downlink data based on the radio resource allocation information, the receiving and setting up steps being performed between the allocating step and the transmitting step.
29. A method for optimizing radio resource utilization in a wireless communication system having a base station and a plurality of user equipment, the method comprising the steps of:
transferring blocks of downlink data to the base station, the data designated for transmission to the plurality of user equipment;
requesting downlink channel quality measurements by the base station from each of the plurality of user equipment that has a pending downlink transmission;
measuring the downlink channel quality at each of the plurality of user equipment that has a pending downlink transmission in response to the request from the base station;
reporting each of the downlink channel quality measurements to the base station;
allocating radio resources by the base station to each of the plurality of user equipment that has a pending downlink transmission based on the respective downlink channel quality measurements; and transmitting the downlink data from the base station to each of the plurality of user equipment that has a pending downlink transmission.
transferring blocks of downlink data to the base station, the data designated for transmission to the plurality of user equipment;
requesting downlink channel quality measurements by the base station from each of the plurality of user equipment that has a pending downlink transmission;
measuring the downlink channel quality at each of the plurality of user equipment that has a pending downlink transmission in response to the request from the base station;
reporting each of the downlink channel quality measurements to the base station;
allocating radio resources by the base station to each of the plurality of user equipment that has a pending downlink transmission based on the respective downlink channel quality measurements; and transmitting the downlink data from the base station to each of the plurality of user equipment that has a pending downlink transmission.
30. The method according to claim 29, wherein the allocating step includes determining the coding rate, the modulation type, and tune slot information for each of the plurality of user equipment that has a pending downlink transmission.
31. The method according to claim 29, wherein the allocating step includes prioritizing each of the plurality of user equipment that has a pending downlink transmission for radio resources by their respective downlink channel quality measurements, in descending order with the user equipment having the highest downlink channel quality measurement receiving its downlink data first.
32. The method according to claim 29, wherein the requesting step includes a request for measurement on a specific radio resource; and the measuring step includes measuring the downlink channel quality on the specific radio resource.
33. The method according to claim 29, further comprising the steps of:
receiving the radio resource allocation information at each of the plurality of user equipment that has a pending downlink transmission; and setting up each of the plurality of user equipment that has a pending downlink transmission for reception of the downlink data, based on the radio resource allocation information, the receiving and setting up steps being performed between the allocating step and the transmitting step.
receiving the radio resource allocation information at each of the plurality of user equipment that has a pending downlink transmission; and setting up each of the plurality of user equipment that has a pending downlink transmission for reception of the downlink data, based on the radio resource allocation information, the receiving and setting up steps being performed between the allocating step and the transmitting step.
34. A system for optimizing radio resource utilization in a wireless communication system, comprising:
a base station;
a plurality of user equipment;
said base station including first receiving means for receiving blocks of downlink data designated for one of said plurality of user equipment;
requesting means for requesting a downlink channel quality measurement from said designated user equipment;
second receiving means fox receiving said downlink channel quality measurement from said designated user equipment;
allocating means for allocating radio resources to said designated user equipment; and transmitting means for transmitting the downlink data to said designated user equipment; and each of said plurality of user equipment including first receiving means for receiving said downlink channel quality measurement request;
measuring means for measuring said downlink channel qualify;
reporting means for reporting said downlink channel quality measurement to said base station; and second receiving means for receiving the downlink data.
a base station;
a plurality of user equipment;
said base station including first receiving means for receiving blocks of downlink data designated for one of said plurality of user equipment;
requesting means for requesting a downlink channel quality measurement from said designated user equipment;
second receiving means fox receiving said downlink channel quality measurement from said designated user equipment;
allocating means for allocating radio resources to said designated user equipment; and transmitting means for transmitting the downlink data to said designated user equipment; and each of said plurality of user equipment including first receiving means for receiving said downlink channel quality measurement request;
measuring means for measuring said downlink channel qualify;
reporting means for reporting said downlink channel quality measurement to said base station; and second receiving means for receiving the downlink data.
35. The system according to claim 34, wherein each of said plurality of user equipment further includes third receiving means for receiving the radio resource allocation information from said base station; and setting means for setting parameters of said designated user equipment based on the radio resource allocation information.
36. The system according to claim 34, wherein said measuring means operates only upon receipt of said downlink channel quality measurement request.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US29087701P | 2001-05-14 | 2001-05-14 | |
US60/290,877 | 2001-05-14 | ||
US10/029,569 US6810236B2 (en) | 2001-05-14 | 2001-12-21 | Dynamic channel quality measurement procedure for adaptive modulation and coding techniques |
US10/029,569 | 2001-12-21 | ||
PCT/US2002/011731 WO2002093951A1 (en) | 2001-05-14 | 2002-04-15 | Dynamic channel quality measurement procedure for adaptive modulation and coding techniques |
Publications (2)
Publication Number | Publication Date |
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CA2447255A1 true CA2447255A1 (en) | 2002-11-21 |
CA2447255C CA2447255C (en) | 2011-09-27 |
Family
ID=26705090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CA2447255A Expired - Lifetime CA2447255C (en) | 2001-05-14 | 2002-04-15 | Dynamic channel quality measurement procedure for adaptive modulation and coding techniques |
Country Status (21)
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JP (6) | JP4210524B2 (en) |
KR (9) | KR101032381B1 (en) |
CN (1) | CN100464599C (en) |
AR (1) | AR035895A1 (en) |
AT (1) | ATE363776T1 (en) |
AU (4) | AU2002256209B2 (en) |
BR (1) | BRPI0209906B1 (en) |
CA (1) | CA2447255C (en) |
DE (1) | DE60220404T2 (en) |
DK (3) | DK1798877T3 (en) |
ES (3) | ES2528727T3 (en) |
GE (3) | GEP20063742B (en) |
HK (3) | HK1068491A1 (en) |
IL (2) | IL158884A0 (en) |
MX (1) | MXPA03010346A (en) |
NO (1) | NO20035051D0 (en) |
SG (2) | SG170621A1 (en) |
TW (7) | TWI427941B (en) |
WO (1) | WO2002093951A1 (en) |
Cited By (2)
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