Channel information feedback reduction in communication network
View Patent ↗Techniques are disclosed for reducing channel information feedback in communication networks. For example, a method comprises the following steps. A set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network are identified. One or more unique downlink communication resource blocks are assigned to each designated mobile terminal that is located in a given first sector of a designated base station. As such, each designated mobile terminal in the first sector of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations.
1. A method comprising:
identifying a set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network;
assigning, for each of a plurality of sectors of a designated base station, one or more unique downlink communication resource blocks to each of a plurality of designated mobile terminals that are located in a first sector of the designated base station; and
assigning the same one or more unique downlink communication resource blocks assigned to a given one of the terminals in the first sector to a designated mobile terminal in a second sector of the designated base station such that each designated mobile terminal in the first and second sectors of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations;
wherein the one or more unique downlink communication resource blocks are assigned such that a minimum size of a contiguous frequency allocation to each designated mobile terminal in the first sector is set equal to or greater than a coherence bandwidth attributable to the first sector.
2. The method of claim 1 , wherein the one or more unique downlink communication resource blocks assigned to each designated mobile terminal comprise one or more non-overlapping sets of frequency values.
3. The method of claim 2 , wherein the one or more non-overlapping sets of frequency values are contiguous with respect to a given frequency range.
4. The method of claim 2 , wherein the one or more non-overlapping sets of frequency values are non-contiguous with respect to a given frequency range.
5. The method of claim 1 , wherein the one or more unique downlink communication resource blocks assigned to each designated mobile terminal comprise one or more non-overlapping sets of time values.
6. The method of claim 5 , wherein the one or more non-overlapping sets of time values are contiguous with respect to a given temporal range.
7. The method of claim 5 , wherein the one or more non-overlapping sets of time values are non-contiguous with respect to a given temporal range.
8. The method of claim 1 , wherein the identifying and assigning steps are performed by one or more network elements in the communication network.
9. The method of claim 8 , wherein the one or more network elements comprise one or more coordinated multipoint transmission controllers.
10. An apparatus comprising:
a memory; and
a processor device operatively coupled to the memory and configured to:
identify a set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network;
assign, for each of a plurality of sectors of a designated base station, one or more unique downlink communication resource blocks to each of a plurality of designated mobile terminals that are located in a first sector of the designated base station; and
assign the same one or more unique downlink communication resource blocks assigned to a given one of the terminals in the first sector to a designated terminal in a second sector of the designated base station such that each designated mobile terminal in the first and second sectors of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations;
wherein the one or more unique downlink communication resource blocks are assigned such that a minimum size of a contiguous frequency allocation to each designated mobile terminal in the first sector is set equal to or greater than a coherence bandwidth attributable to the first sector.
11. The apparatus of claim 10 , wherein the one or more unique downlink communication resource blocks assigned to each designated mobile terminal comprise one or more non-overlapping sets of frequency values.
12. The apparatus of claim 11 , wherein the one or more non-overlapping sets of frequency values are contiguous with respect to a given frequency range.
13. The apparatus of claim 11 , wherein the one or more non-overlapping sets of frequency values are non-contiguous with respect to a given frequency range.
14. The apparatus of claim 10 , wherein the one or more unique downlink communication resource blocks assigned to each designated mobile terminal comprise one or more non-overlapping sets of time values.
15. The apparatus of claim 14 , wherein the one or more non-overlapping sets of time values are contiguous with respect to a given temporal range.
16. The apparatus of claim 14 , wherein the one or more non-overlapping sets of time values are non-contiguous with respect to a given temporal range.
17. The apparatus of claim 10 , wherein the processor device and the memory are part of a coordinated multipoint transmission controller.
18. An article of manufacture comprising:
a non-transitory computer readable storage medium for storing processor device executable instructions which when executed by a processor device:
identify a set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network;
assign, for each of a plurality of sectors of a designated base station, one or more unique downlink communication resource blocks to each of a plurality of designated mobile terminals that are located in a first sector of the designated base station; and
assign the same one or more unique downlink communication resource blocks assigned to a given one of the terminals in the first sector to a designated terminal in a second sector of the designated base station such that each designated mobile terminal in the first and second sectors of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations;
wherein the one or more unique downlink communication resource blocks are assigned such that a minimum size of a contiguous frequency allocation to each designated mobile terminal in the first sector is set equal to or greater than a coherence bandwidth attributable to the first sector.