Collaborative beam forming of base transceiver stations for reducing interference in a wireless multi-cell network
First Claim
Patent Images
1. A method comprising:
- detecting signal strength of downlink signals transmitted from a plurality of base transceiver stations and received at a mobile station;
selecting a plurality of candidate serving base transceiver stations based on the detected signal strength;
selecting a first group of serving base transceiver stations from the candidate serving base transceiver stations;
transmitting signals containing information indicating the candidate serving base transceiver stations from the mobile station to current uplink serving base transceiver stations of the mobile station;
forwarding the information indicating the candidate serving base transceiver stations from the current uplink serving base transceiver stations to a management server;
at the management server, determining beam forming weight factors for the first group of serving base transceiver stations; and
sending signals between the mobile station and the first group of serving base transceiver stations using beam forming techniques with the beam forming weight factors to reduce interference at the mobile station.
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Abstract
A method of signal transmission and reception for a cellular wireless network is provided comprising detecting signal strength of signals transmitted or received between a mobile station and a plurality of base transceiver stations; selecting a plurality of candidate serving base transceiver stations based on the detected signal strength; selecting a first group of serving base transceiver stations from the candidate serving base transceiver stations; and sending signals between the mobile station and the first group of serving base transceiver stations using beam forming technology to reduce interference received by the mobile station.
10 Citations
15 Claims
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1. A method comprising:
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detecting signal strength of downlink signals transmitted from a plurality of base transceiver stations and received at a mobile station; selecting a plurality of candidate serving base transceiver stations based on the detected signal strength; selecting a first group of serving base transceiver stations from the candidate serving base transceiver stations; transmitting signals containing information indicating the candidate serving base transceiver stations from the mobile station to current uplink serving base transceiver stations of the mobile station; forwarding the information indicating the candidate serving base transceiver stations from the current uplink serving base transceiver stations to a management server; at the management server, determining beam forming weight factors for the first group of serving base transceiver stations; and sending signals between the mobile station and the first group of serving base transceiver stations using beam forming techniques with the beam forming weight factors to reduce interference at the mobile station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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detecting signal strength of uplink signals transmitted from a mobile station and received by a plurality of base transceiver stations; selecting a plurality of candidate serving base transceiver stations based on the detected signal strength; selecting a first group of serving base transceiver stations from the candidate serving base transceiver stations; transmitting an uplink signal strength report from current uplink serving base transceiver stations associated with the mobile station to a management server; transmitting a command signal containing information regarding the first group of base transceiver stations from the management server to the first group of serving base transceiver stations and the current uplink serving base transceiver stations; sending signals between the mobile station and the first group of serving base transceiver stations using beam forming techniques to reduce interference at the mobile station; and deactivating a first subset of base transceiver stations of the current uplink serving base transceiver stations from forming uplinks with the mobile station if the first subset of base transceiver stations do not belong to the first group of serving base transceiver stations. - View Dependent Claims (12, 13, 14, 15)
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Specification