EP0926843A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and system for operating a cellular system having beamforming antennas
Assignee: Nokia Oyj
•
Filing: 1998-11-26
•
Granted: —
•
Expires: 2018-11-26
Abstract
Abstract A method and system for operating a CDMA cellular telecommunications system having beamforming antennas in combination with other antenna access techniques. System capacity and demand on system resources are dynamically adjusted using beamforming antennas for some mobile stations, and other antenna access techniques for other mobile stations. Forward link channels on the beamforming and non-beamforming antennas are dynamically allocated among mobile stations depending upon resources available and the type of channel required by each mobile station. Forward link channels requiring a higher data rate, above a predetermined threshold, may be assigned to channels transmitted on beamformed antennas. In an embodiment of the invention, the cellular system includes beamformed and non-beamforming antennas.
Inventors
- 👤 Steven Gray
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 12:51
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/24; H04W16/28; H04W72/00; H04W72/04; H04W72/044; H04W72/046; H04B; H04B1/00; H04B1/69; H04B1/707; H04B1/7073; H04B1/7075; H04B7/00; H04B7/02; H04B7/04; H04B7/06; H04B7/0613; H04B7/0615; H04B7/0617; H04B7/08; H04B7/0837; H04B7/0842; H04B7/086
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
112 words
A method for operating a cellular system having a base station
transmitting over beamformed channels from beamforming antennas
and non-beamformed channels from non-beamforming antennas, said
method comprising the steps of: assigning a mobile station to a non-beamformed channel; determining that said mobile station is to be assigned to a plurality
of beamformed channels based on at least one system
parameter; assigning said mobile station to said plurality of beamformed
channels; determining information at said mobile station from a first
beamformed channel of said plurality of beamformed channels;
and transmitting from said base station to said mobile station on a
second beamformed channel of said plurality of beamformed
channels based on said information.
Claim 2
Dependent Claim
49 words
The method of claim 1, wherein said step of determining that said
mobile station is to be assigned to a plurality of beamformed channels
comprises determining that a data rate of a transmission from said base
station to said mobile station on said non-beamformed channel exceeds
a predetermined level.
Claim 3
Independent Claim
62 words
The method of claims 1 or 2, wherein said non-beamformed
channel comprises a first non-beamformed channel and wherein said
method further comprises the steps of: determining that said mobile station is to be transferred from said
second beamformed channel to a second non-beamformed channel
based on said at least one system parameter; and assigning said mobile station to said second non-beamformed channel.
Claim 4
Dependent Claim
50 words
The method of claim 3, wherein said step of determining that said
mobile station is to be transferred from said second beamformed channel
comprises determining that said data rate of a transmission from said
base station to mobile station on said second beamformed channel has
fallen below said predetermined level.
Claim 5
Independent Claim
44 words
The method of any one of claims 1 to 4, wherein said step of
determining that said mobile station is to be assigned to a plurality of
beamformed channels comprises determining that system resources are
available for use for said plurality of beamformed channels.
Claim 6
Independent Claim
27 words
The method of any of claims 1 to 5, wherein said information
determined from said first beamformed channel in said step of
determining information comprises timing information.
Claim 7
Independent Claim
231 words
A method of operating a cellular system having a base station
transmitting on beamforming and non-beamforming antennas, said
method comprising the steps of: transmitting a first control message on a first control channel from
said base station to a mobile station, said first control channel
transmitted from a non-beamforming antenna of said base station; demodulating, in response to receiving said first control message,
a first traffic channel at said mobile station, said first traffic channel
transmitted from said non-beamforming antenna of said base
station; determining that said mobile station is to be transferred from said
first traffic channel to a second traffic channel based on at least
one system parameter, said second traffic channel transmitted
from a first beamforming antenna of said base station; transmitting, in response to said determination made in said step
of determining, a second control message on said first traffic
channel, said second control message identifying a second
control channel associated with said second traffic channel; demodulating, in response to receiving said second control
message at said mobile station, said second control channel; transmitting channel data from said mobile station to said base
station, said channel data determined from said second control
channel; transmitting a transmission on said second traffic channel from
said base station to said mobile station according to said
channel data; and
demodulating said transmission on said second traffic channel at
said mobile station.
Claim 8
Dependent Claim
50 words
The method of claim 7, wherein said step of determining that said
mobile station is to be transferred from said first traffic channel comprises
determining that a data rate of a transmission from said base station to
said mobile station on said first traffic channel has exceeded a
predetermined level.
Claim 9
Dependent Claim
67 words
The method of claim 7 or 8, further comprising the steps of: determining that said mobile station should be transferred from
said second traffic channel to a third traffic channel, said third
traffic channel transmitted from a non-beamforming antenna of
said base station; transmitting a third control message to said mobile station on said
second traffic channel; and demodulating said third traffic channel at said mobile station.
Claim 10
Dependent Claim
50 words
The method of claim 9, wherein said step of determining that said
mobile station should be transferred from said second traffic channel
comprises determining that a data rate of a transmission from said base
station to said mobile station on said second traffic channel has fallen
below said predetermined level
Claim 11
Independent Claim
120 words
An apparatus for operating a cellular system having a base station
transmitting over beamformed channels from beamforming antennas and
over non-beamformed channels from beamforming antennas, said
apparatus comprising: means for assigning a mobile station to a non-beamformed
channel; means for determining that said mobile station is to be assigned
to a plurality of beamformed channels based on at least one
system parameter; means for assigning said mobile station to said plurality of
beamformed channels; means for determining information at said mobile station from a
first beamformed channel at said plurality of beamformed
channels; and means for transmitting from said base station to said mobile
station on a second beamformed channel of said plurality of
beamformed channels based on said information.
Claim 12
Dependent Claim
51 words
The apparatus of claim 11, wherein said means for determining
that said mobile station is to be assigned to a plurality of beamformed
channels comprises means for determining that a data rate of a
transmission from said base station to said mobile station on said non-beamformed
channel exceeds a predetermined level.
Claim 13
Dependent Claim
63 words
The apparatus of claim 11 or 12, wherein said non-beamformed
channel comprises a first non-beamformed channel and wherein said
apparatus further comprises: means for determining that said mobile station is to be transferred
from said second beamformed channel to a second non-beamformed
channel based on said at least one system
parameter; and means for assigning said mobile station to said second non-beamformed
channel.
Claim 14
Dependent Claim
52 words
The apparatus of claim 13, wherein said means for determining
that said mobile station is to be transferred from said second
beamformed channel comprises means for determining that a data rate
of a transmission from said base station to mobile station on said second
beamformed channel has fallen below said predetermined level.
Claim 15
Independent Claim
46 words
The apparatus of any one of claims 11 to 14, wherein said means
for determining that said mobile station is to be assigned to a plurality of
beamformed channels comprises means for determining that system
resources are available for use for said plurality of beamformed
channels.
Claim 16
Independent Claim
28 words
The apparatus of any one of claims 1 to 15, wherein said
information determined from said first beamformed channel by said
means for determining information comprises timing information.
Claim 17
Independent Claim
41 words
The method of any one of claims 1 to 6 or the apparatus of any
one of claims 11 to 16, wherein said plurality of beamformed channels
comprises a CDMA pilot channel and CDMA traffic channel transmitted
on the same antenna.
Claim 18
Independent Claim
32 words
The apparatus of method of any one of claims 1 to 6 or the
apparatus of any one of claims 11 to 16, wherein said non-beamformed
channel comprises a CDMA paging channel.
Claim 19
Independent Claim
30 words
The method of any one of claims 1 to 6 or the apparatus of any
one of claims 11 to 16, wherein said non-beamformed channel
comprises a CDMA traffic channel.
Claim 20
Independent Claim
244 words
An apparatus for operating a cellular system having a base station
transmitting on beamforming and non-beamforming antennas, said
apparatus comprising: means for transmitting a first control message on a first control
channel from said base station to a mobile station, said first
control channel transmitted from a non-beamforming antenna of
said base station; means for demodulating, in response to receiving said first control
message, a first traffic channel at said mobile station, said first
traffic channel transmitted from said non-beamforming antenna of
said base station; means for determining that said mobile station is to be transferred
from said first traffic channel to a second traffic channel based on
at least one system parameter, said second traffic channel
transmitted from a first beamforming antenna of said base station; means for transmitting, in response to said determination made in
said means for determining, a second control message on said
first traffic channel, said second control message identifying a
second control channel associated with said second traffic
channel; means for demodulating, in response to receiving said second
control message at said mobile station, said second control
channel; means for transmitting channel data from said mobile station to
said base station, said channel data determined from said second
control channel; means for transmitting a transmission on said second traffic
channel from said base station to said mobile station according to
said channel data; and means for demodulating said transmission on said second traffic
channel at said mobile station.
Claim 21
Dependent Claim
52 words
The apparatus of claim 20, wherein said means for determining
that said mobile station is to be transferred from said first traffic channel
comprises means for determining that a data rate of a transmission from
said base station to said mobile station on said first traffic channel has
exceeded a predetermined level.
Claim 22
Dependent Claim
69 words
The apparatus of claim 21 or 22, further comprising: means for determining that said mobile station should be
transferred from said second traffic channel to a third traffic
channel, said traffic channel transmitted from a non-beamforming
antenna of said base station; means for transmitting a third control message to said mobile
station on said second traffic channel; and means for demodulating said first traffic channel at said mobile
station.
Claim 23
Dependent Claim
52 words
The apparatus of claim 22, wherein said means for determining
that said mobile station should be transferred from said second traffic
channel comprises means for determining that a data rate of a
transmission from said base station to said mobile station on said second
traffic channel has fallen below said predetermined level.
Claim 24
Independent Claim
46 words
The method of any one of claims 7 to 10 or the apparatus of any
one of claims 20 to 23, wherein said second control channel comprises a
CDMA pilot channel and said second traffic channel comprises a CDMA
traffic channel transmitted on the same antenna.
Claim 25
Independent Claim
37 words
The method of any one of claims 7 to 10 or the apparatus of any
one of claims 20 to 23, wherein said first control channel and first traffic
channel are CDMA channels transmitted from omnidirectional antennas.
Claim 26
Independent Claim
39 words
The method of any one of claims 7 to 10 or the apparatus of any one of
claims 20 to 23, wherein said channel data determined from said second control
channel by said means for determining comprises timing information.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.