EP1085773A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Mobile telecommunications network with distributed base stations
Assignee: Nortel Networks SA
•
Filing: 1999-09-20
•
Granted: —
•
Expires: 2019-09-20
Abstract
Abstract A mobile telecommunications local area network (20) is described with a concentrator (32) connected to a plurality of radio heads (36, 38) via a local area network (LAN, 20). The concentrator (32) provides digital signal processing (DSP) as a shared resource for the radio heads (36, 38). The DSP may include channel coding. The radio heads (36, 38) may provide modulation for channel coded signals transmitted from the concentrator (32) via the LAN (20). The LAN may be a wired LAN or a wireless LAN.
Inventors
- 👤 Thierry Lucidarme
- 👤 Fabrice Robert
- 👤 Patrick Lagrange
- 👤 Pierre Emmanuel Calmel
- 👤 Christophe Bonnot
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 18:16
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/08; H04J; H04J2203/00; H04J2203/0001; H04J2203/0028; H04J2203/0039; H04J2203/0041; H04W88/085
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
90 words
A first local mobile telecommunications network which is connectable to and compatible
with a second mobile telecommunications network, the first local network comprising: a plurality of radio heads for radio communication with one or more mobile terminals
compatible with the second mobile telecommunications network; a concentrator connected to the radio heads by a local shared resource network, the radio
heads being shared resources of the concentrator; and the concentrator including at least a
digital signal processing unit, the digital signal processing unit being a shared resource for
the radio heads.
Claim 2
Dependent Claim
170 words
The first local mobile telecommunications network according to claim 1 wherein, the
concentrator includes at least one of a channel coder for channel coding messages to be
transmitted from one or more of the radio heads, the channel coder being a shared resource
for the one or more radio heads; a channel decoder, the channel decoder being a shared
resource for the one or more radio heads; an equalizer, the equalizer being a shared
resource for the one or more radio heads; a demodulator for demodulating radio samples
from the one or more radio heads, the demodulator being a shared resource for the one or
more radio heads, a modulator, the modulator being a shared resource for the one or more
radio heads; a digital filter, the digital filter being a shared resource for the one or more
radio heads; an encrypter, the encrypter being a shared resource for the one or more radio
heads; a decrypter, the decrypter being a shared resource for the one or more radio heads.
Claim 3
Dependent Claim
38 words
The first local mobile telecommunications network according to claim I or 2, further
comprising a scanning unit to scan transmissions from sources of radio energy, the scanning
unit being a shared resource on the local shared resource network.
Claim 4
Dependent Claim
44 words
The first local mobile telecommunications network according to any of claims 1 to 3,
wherein each of one or more of the radio heads includes at least two fixed gain receiver
amplifiers and a unit for selecting the output of one of the amplifiers.
Claim 5
Dependent Claim
25 words
The first local mobile telecommunications network according to claim 4, wherein the
selection unit is adapted to select none of the outputs of the amplifiers.
Claim 6
Dependent Claim
76 words
The first local mobile telecommunications network according to any of claims 1 to 5,
wherein each of one or more of the radio heads include at least two receivers and each one
or more radio head is adapted to transmit the two received radio signals from the two
receivers to the concentrator via the local shared resource network and the concentrator
includes a selector circuit to select one of the two signals for digital signal processing.
Claim 7
Dependent Claim
53 words
The first local mobile telecommunications network according to any of claims 1 to 6,
wherein two or more radio heads are adapted to receive signals transmitted from a mobile
terminal and the concentrator is adapted to combine the signals from the two or more radio
heads before digital signal processing the combined signals.
Claim 8
Dependent Claim
58 words
The first local mobile telecommunications network according to any of claims 1 to 6,
wherein two or more radio heads are adapted to receive signals transmitted from a mobile
terminal and to transmit these to the concentrator via the local shared resource network and
the concentrator is adapted to select the signals from one of the radio heads.
Claim 9
Dependent Claim
35 words
The first local mobile telecommunications network according to claim 8, wherein the first
network is adapted to prevent the received signals of the not-selected radio heads from
being transmitted through the local shared resource network.
Claim 10
Dependent Claim
38 words
The first local mobile telecommunications network according to any of claims 1 to 9,
the first network being adapted to transmit a beacon signal from two or more radio heads,
each signal being transmitted with a selectable delay.
Claim 11
Independent Claim
91 words
A method of operating a first local telecommunications network which is connected to
and compatible with a second mobile telecommunications network, comprising the steps of: receiving first radio mobile telecommunication signals from one or more mobile terminals
compatible with the second mobile telecommunications network at one or more radio
heads, the first radio mobile telecommunication signals encoding user messages; transmitting second radio signals derived from the first radio mobile telecommunication
signals over a local shared resource network to a concentrator; and digital signal processing the second radio signals in the concentrator.
Claim 12
Dependent Claim
108 words
The method according to claim 11, further comprising at least one of the following
steps: demodulating radio samples received from the one or more radio heads; modulating radio samples to be transmitted to one or more radio heads; channel decoding of radio samples received from the one or more radio heads; channel coding of messages to be transmitted from one or more of the radio heads; filtering of digital signals to or from the one or more radio heads; encryption or decryption of digital signals to or from the one or more radio heads; channel equalization of digital signal to or from the one or more radio heads.
Claim 13
Independent Claim
20 words
The method according to claims 11 or 12, further comprising the step of scanning
transmissions from sources of radio energy.
Claim 14
Independent Claim
40 words
The method according to any of claims 11 to 13, wherein each of one or more of the
radio heads includes at least two fixed gain receiver amplifiers, further comprising the step
of selecting the output from one the amplifiers.
Claim 15
Dependent Claim
27 words
The method according to claim 14, further comprising the step of preventing any of the
outputs from the amplifiers being transmitted over the local shared resource network.
Claim 16
Independent Claim
48 words
The method according to any of claims 11 to 15, wherein two or more radio heads are
adapted to receive signals transmitted from a mobile terminal, further comprising the step of
combining the signals from the two or more radio heads before digital signal processing the
combined signals.
Claim 17
Independent Claim
61 words
The method according to any of claims 11 to 16, wherein two or more radio heads are
adapted to receive signals transmitted from a mobile terminal, further comprising the steps
of: transmitting the received signals over the local shared resource network to the
concentrator and selecting the signals from one of the radio heads in the concentrator for
digital signal processing.
Claim 18
Dependent Claim
29 words
The method according to claim 17, further comprising the step of preventing the
received signals of the not-selected radio head from being transmitted through the local
shared resource network.
Claim 19
Independent Claim
33 words
The method according to any of claims 11 to 18, further comprising the steps of
transmitting a beacon signal from two or more radio heads, each signal being transmitted
with a selectable delay.
Claim 20
Dependent Claim
75 words
A concentrator for connection on one side to a mobile telecommunications network and
for connection on another side for use as a shared resource on a local shared resource
network; the concentrator comprising: an interface to the local shared resource network; digital signal processing units for processing for transmitting outgoing radio signals
to the interface for transmission to a radio transmitter the digital signal processing units
being shared resources of the local shared resource network.
Claim 21
Dependent Claim
91 words
A first local mobile telecommunications network which is connectable to and compatible
with a second mobile telecommunications network, the first local network comprising: a plurality of radio heads for radio communication with one or more mobile terminals
compatible with the second mobile telecommunications network; a concentrator connected to the radio heads by a local shared resource network, the radio
heads being shared resources of the concentrator; and a scanning unit to scan transmissions
from sources of radio energy, the scanning unit being a shared resource on the local shared
resource network.
Claim 22
Dependent Claim
103 words
A first local mobile telecommunications network which is connectable to and compatible
with a second mobile telecommunications network, the first local network comprising: a plurality of radio heads for radio communication with one or more mobile terminals
compatible with the second mobile telecommunications network; a concentrator connected to the radio heads by a local shared resource network, the radio
heads being shared resources of the concentrator; each of one or more of the radio heads
including at least two fixed gain receiver amplifiers and a unit for selecting the output of one
of the amplifiers or none of the outputs of the amplifiers.
Claim 23
Dependent Claim
105 words
A first local mobile telecommunications network which is connectable to and compatible
with a second mobile telecommunications network, the first local network comprising: a plurality of radio heads for radio communication with two or more mobile terminals
compatible with the second mobile telecommunications network; a concentrator connected to the radio heads by a local shared resource network, the radio
heads being shared resources of the concentrator; the two or more radio heads being
adapted to receive signals from a mobile terminal and the first network is adapted to select
the signals from one of the radio heads for transmission over the local shared resource
network.
Claim 24
Dependent Claim
63 words
A radio head for connection on one side for use as a shared resource on a local shared
resource network and on another side for communicating with mobile terminals via an air
interface; the radio head comprising: a network interface to the local shared resource network; and a unit for transmitting to the network interface non-demodulated radio signals
received from the mobile terminals.
Claim 25
Dependent Claim
71 words
A radio head for connection on one side for use as a shared resource on a local shared
resource network and on another side for communicating with mobile terminals via an air
interface; the radio head comprising: a network interface to the local shared resource network; and a first unit for receiving channel coded radio signals from the network interface; and a second unit for modulating the received channel coded signals.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.