Method for managing a wireless passive optical network

Patent metadata

Field	Value
Publication number	US-10848986-B2
Application number	US-201916375928-A
Country	US
Kind code	B2
Filing date	Apr 5, 2019
Priority date	Apr 30, 2018
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

Method for managing a wireless passive optical network, including a plurality of access points, APs, and a plurality of customer premises equipments, CPEs. The method includes configuring an AP to CPE association based on a load balancing algorithm such that each CPE is associated with at least one AP; configuring for each AP an AP beamforming codebook based on the configured association, wherein the AP beamforming codebook includes entries, wherein each entry is representative for a beam pattern to be transmitted by the AP, and wherein the AP beamforming codebook includes for each CPE associated with the AP—a line of sight, LoS, entry representative for a beam pattern to be transmitted to the respective CPE via a LoS path; and at least one back-up entry representative for a beam pattern to be transmitted to the respective CPE via a back-up path different from the LoS path.

First claim

The invention claimed is:

1. A method for managing a wireless passive optical network (WPON) comprising a plurality of access points (APs) and a plurality of customer premises equipments (CPEs) the method comprising:
configuring an AP to CPE association based on a load balancing algorithm such that each CPE of the plurality of CPEs is associated with at least one AP of the plurality of APs; and
configuring, for each AP of the plurality of APs, an AP beamforming codebook based on the configured association,
wherein the AP beamforming codebook comprises entries wherein each entry represents a beam pattern to be transmitted by the AP, and
wherein the AP beamforming codebook comprises, for each CPE associated with the respective AP,
a line of sight (LoS) entry representing a beam pattern to be transmitted to the respective CPE via a LoS path between the AP and the respective CPE, and
at least one back-up entry representing a beam pattern to be transmitted to the respective CPE via a back-up path which is different from the LoS path.

2. The method according to claim 1 , wherein the at least one back-up entry comprises a reflection entry resenting a beam pattern to be transmitted to the respective CPE via a reflected path.

3. The method according to claim 1 ,
wherein the at least one back-up entry comprises a relay entry representing a beam pattern to be transmitted to the respective CPE via a relay path, and
wherein at least one CPE of the plurality of CPEs other than the respective CPE or at least one AP of the plurality of APs other than the respective AP, or both, is used as a relay.

4. The method according to claim 1 , further comprising:
scanning the WPON for at least one of changes in AP configuration or changes in CPE configuration; and
triggering the configuring of the AP to CPE association when at least one of an AP is added to the WPON, an AP is removed from the WPON, a CPE is added to the WPON, or a CPE is removed from the WPON.

5. The method according to claim 1 , wherein the configuring the AP to CPE association is performed periodically.

6. The method according to claim 1 , further comprising:
configuring, for at least one CPE of the plurality of CPEs, a CPE beamforming codebook based on the configured association,
wherein the CPE beamforming codebook comprises entries, and
wherein each entry represents a beam pattern to be transmitted by the at least one CPE.

7. The method according to claim 1 , wherein the configuring the AP to CPE association comprises at least one of de-associating a CPE from an AP, re-associating a CPE to an AP, associating a CPE to an AP, or any combination thereof.

8. The method according to claim 1 , wherein the configuring the AP beamforming codebook comprises associating an identifier of the respective CPE with each entry for a respective CPE.

9. The method according to claim 1 ,
wherein the configuring the AP beamforming codebook comprises configuring multiple AP codebooks per AP, and
wherein each AP codebook corresponds with a subset of CPEs from the plurality of CPEs.

10. A wireless passive optical network (WPON) managing system for managing a WPON comprising a plurality of access points (APs) and a plurality of customer premises equipments (CPEs), the system comprising a controller configured to:
configure an AP to CPE association based on a load balancing algorithm such that each CPE of the plurality of CPEs is associated with at least one AP of the plurality of APs; and
configure, for each AP of the plurality of APs, an AP beamforming codebook based on the configured association,
wherein the AP beamforming codebook comprises entries wherein each entry is representative for a beam pattern to be transmitted by said AP, and
wherein the AP beamforming codebook comprises, for each CPE associated with the respective AP,
a line of sight (LoS) entry representing a beam pattern to be transmitted to the respective CPE via a LoS path between the AP and the respective CPE, and
at least one back-up entry representing a beam pattern to be transmitted to the respective CPE via a back-up path which is different from the LoS path.

11. The managing system according to claim 10 , wherein the at least one back-up entry comprises a reflection entry representing a beam pattern to be transmitted to the respective CPE via a reflected path.

12. The managing system according to claim 10 ,
wherein the at least one back-up entry comprises a relay entry representing a beam pattern to be transmitted to the respective CPE via a relay path, and
wherein at least one CPE of the plurality of CPEs other than the respective CPE or at least one AP of the plurality of APs other than the respective AP, or both, is used as a relay.

13. The managing system according to claim 10 , wherein the controller is configured to:
scan the WPON for changes in at least one of AP configuration or CPE configuration; and
trigger the configuring of the AP to CPE association when at least one of an AP is added from the WPON, an AP is removed from the WPON, a CPE is added from the WPON, and or a CPE is removed from the WPON.

14. The managing system according to claim 10 , wherein the controller is configured to periodically configure the AP to CPE association.

15. A non-transitory computer-readable medium storing instructions, which when executed by a computer, cause the computer to perform the method of claim 1 .

Assignees

• Nokia Technologies Oy

Inventors

• Lopez-Perez David
• Garcia Rodriguez Adrian
• Galati Giordano Lorenzo
• Geraci Giovanni
• Timmers Michael
• Olaziregi Nikolas

Classifications

• H04B7/0478 Primary

  Special codebook structures directed to feedback optimisation · CPC title

• H04W24/02 Primary

  Arrangements for optimising operational condition · CPC title

• H04B7/086

  using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming · CPC title

• H04B7/024

  Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems · CPC title

• H04B7/0617

  for beam forming · CPC title