Sector selection for coordinated multipoint based on application type

• US 9,554,375 B1
• Filed: 05/01/2015
• Issued: 01/24/2017
• Est. Priority Date: 05/01/2015
• Status: Active Grant

• Current Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Original Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Inventors: Srinivas, Shilpa Kowdley, Pawar, Hemanth, Sitaram, Krishna, Liu, Chunmei, Oroskar, Siddharth, Singh, Jasinder
• Primary Examiner(s): Qureshi, Afsar M
• Application Number:
  US14/702,391
• Time in Patent Office: 634 Days
• Field of Search: 370280-336
• US Class Current: 1/1
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/066 Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

Coordinated multipoint (CoMP) may involve coordination between multiple sectors to receive and/or process a given user equipment'"'"'s uplink signal. Embodiments herein may help to intelligently select the particular sectors that should coordinate to provide uplink CoMP, based on the types of applications being served in sectors that are candidates to provide uplink CoMP. For example, a base station serving a primary sector in an CoMP group that includes two or more candidates from which to select a secondary sector sectors for uplink CoMP, may evaluate the application being served by traffic flows in these candidates, in an effort to select secondary sectors having lower-priority traffic flows.

Claims

1. A method comprising:

receiving, by a base station, in a first sector, an uplink signal from a user equipment (UE), wherein two or more other sectors are in a coordinated multipoint (CoMP) group with the first sector;

for each of one or more of the two or more other sectors, determining, by the base station, a corresponding application-based priority measure for the other sector, wherein the application-based priority measure is determined based on one or more types of applications having one or more service flows in the other sector;

using the one or more determined application-based priority measures as a basis for selecting at least one of the two or more other sectors in the CoMP group as a secondary sector; and

jointly processing, by the base station, the uplink signal from the UE, wherein the joint processing is based at least in part on the uplink signal received in the first sector and respective uplink signals received in each secondary sector.

2. The method of claim 1, wherein the coordinated multipoint (CoMP) is a pre-determined CoMP group.

3. The method of claim 1, wherein the base station selects only one secondary sector, and wherein the other sector having the highest corresponding application-based priority measure is selected as the secondary sector.

4. The method of claim 1, wherein the base station selects a predetermined number of secondary sectors, and wherein the other sectors having the highest corresponding application-based priority measures are selected as the secondary sectors.

5. The method of claim 1, wherein the base station selects each sector having greater than a threshold application-based priority measure as a secondary sector.

6. The method of claim 1, wherein deep packet inspection (DPI) is utilized to determine a respective application type for each of one or more service flows in a given other sector.

7. The method of claim 1, wherein determining the corresponding application-based priority measure for a given other sector comprises:

determining a priority value for each of the one or more service flows in the given other sector; and

determining application-based priority measure based at least in part on the one or more determined priority values for the one or service flows in the given other sector.

8. The method of claim 1, wherein determining the corresponding application-based priority measure for a given other sector comprises:

determining a priority classification for each of the one or more service flows in the given other sector; and

determining application-based priority measure based at least in part on the one or more determined priority classification for the one or service flows in the given other sector.

9. The method of claim 1, wherein determining the corresponding application-based priority measure for a given other sector comprises:

determining a one or more application-type statistics for service flows in the given other sector; and

determining application-based priority measure for the given other sector based at least in part on the one or more determined application-type statistics.

10. The method of claim 9, wherein determining the corresponding application-based priority measure for the given other sector comprises:

classifying each service flow as either a first application class or a second application class based on an application for which the service flow is utilized;

determining a total number of UEs using at least one service flow of the first application class in the given other sector;

determining a total number of service flows of the first application class in the given other sector; and

using both (a) the total number of UEs using at least one service flow of the first type and (b) the total number of service flows of the first type as a basis for determining the application-based priority measure for the given other sector.

11. The method of claim 9, wherein determining the corresponding application-based priority measure for the given other sector further comprises:

determining a total number of UEs using at least one service flow of the second type in the given other sector;

determining a total number of service flows of the second type in the given other sector; and

using both (a) the total number of UEs using at least one service flow of the second type and (b) the total number of service flows of the second type as a further basis for determining the application-based priority measure for the given other sector.

12. The method of claim 1, wherein the method further comprises:

for each of one or more of the other sectors, determining a received-power indication for uplink communications from the UE in the other sector; and

using the one or more determined received-power indication indications as a further basis for the selecting of at least one of the other sectors as a secondary sector.

13. A network component comprising:

a radio-frequency (RF) communication interface configured to receive an uplink signal from a user equipment (UE) in a first sector of an access network, wherein two or more other sectors are in a coordinated multipoint (CoMP) group with the first sector;

at least one backhaul communication interface for communicating with one or more second base stations;

at least one processor; and

a non-transitory computer readable medium comprising program instructions stored thereon that are executable by the at least one processor to;

for each of one or more of the two or more other sectors, determine a corresponding application-based priority measure for the other sector, wherein the application-based priority measure is determined based on one or more types of applications having one or more service flows in the other sector;

use the one or more determined application-based priority measures as a basis to select at least one of the two or more other sectors in the CoMP group as a secondary sector to provide uplink CoMP for the UE; and

jointly process the uplink signal from the UE, wherein the joint processing is based at least in part on the uplink signal received in the first sector and respective uplink signals received in each secondary sector.

14. The network component claim 13, wherein up to a predetermined number of the other sectors having the highest corresponding application-based priority measures are selected as the secondary sectors.

15. The network component claim 13, wherein each other sector for which the determined application-based priority measure is greater than a threshold measure, is selected as a secondary sector.

16. The network component claim 13, wherein deep packet inspection (DPI) is utilized to determine a respective application type for each of one or more service flows in a given other sector.

17. The network component claim 13, wherein the program instructions that are executable to determine the corresponding application-based priority measure for a given other sector comprise program instructions stored on the non-transitory computer readable medium and executable by the at least one processor to:

determine a priority value for each of the one or more service flows in the given other sector; and

determine an application-based priority measure based at least in part on the one or more determined priority values for the one or service flows in the given other sector.

18. The network component claim 13, wherein the program instructions that are executable to determine the corresponding application-based priority measure for a given other sector comprise program instructions stored on the non-transitory computer readable medium and executable by the at least one processor to:

determine one or more application-type statistics for service flows in the given other sector; and

determine the application-based priority measure for the given other sector based at least in part on the one or more determined application-type statistics.

19. A method comprising:

determining, by a first base station, a time-division duplex (TDD) frame configuration that is implemented in a serving sector of a user equipment (UE);

based at least in part on the determined TDD frame configuration, the first base station selecting an uplink coordinated multipoint (CoMP) mode from a plurality of uplink CoMP modes; and

receiving, by the first base station, an uplink communication from the UE according to the selected uplink CoMP mode.

20. The method of claim 19, wherein the selected uplink CoMP mode involves coordination between the serving sector and one or more of a plurality of other sectors that are in a CoMP group with the serving sector, the method further comprising:

after selecting the uplink CoMP mode, determining, for each of one or more of the other sectors, a corresponding application-based priority measure for the other sector, wherein the application-based priority measure is determined based on one or more types of applications having one or more service flows in the other sector;

using the one or more determined application-based priority measures as a basis for selecting at least one of the two or more other sectors in the CoMP group as a secondary sector;

jointly processing, by the base station, the uplink signal from the UE, wherein the joint processing is based at least in part on the uplink signal received in the first sector and respective uplink signals received in each secondary sector.