EP0944176A1
Expired / Lapsed
EP
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Dual mode communication device and method of operation
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1998-03-20
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Granted: —
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Expires: 2018-03-20
Abstract
Abstract A short-range radio transmitter of a communication device comprising a short-range radio and a long-range radio is controlled to delay packets which are scheduled to be transmitted at the same time as a long-range transmitter of the long-range radio commences or discontinues to transmit. A frequency synthesizer of the short-range radio is thereby not affected by a change in the power supply voltage which otherwise occurs at these moments due to transmission with high power by the long-range transmitter.
Inventors
- 👤 Sven Mattisson
- 👤 Jaap Haartsen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/54; H04B1/56
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
64 words
A method of operating a communication device comprising
circuitry for non-continuous transmission in a first radio
system and circuitry for non-continuous transmission in a
second radio system, the method comprising the step of: avoiding transmission by the communication device
within the second radio system which is planned to occur at
the points in time the first radio system will commence or
discontinue to transmit.
Claim 2
Dependent Claim
39 words
A method of operating a communication device according
to claim 1 wherein transmission by the communication device
within the second radio system which is planned to occur
during periods of time the first radio system will transmit
is avoided.
Claim 3
Dependent Claim
35 words
A method of operating a communication device according
to claim 1 or claim 2 wherein transmission by the
communication device within the second radio system is
avoided by delaying transmission within the second radio
system.
Claim 4
Dependent Claim
35 words
A method of operating a communication device according
to claim 1 or claim 2 wherein transmission by the
communication device within the second radio system is
avoided by advancing transmission within the second radio
system.
Claim 5
Independent Claim
66 words
A method of operating a communication device according
to any one of the preceding claims wherein transmission
within the second radio system takes place as bursts, each
burst being transmitted within a time-slot of a frame and
each frame being made up of a number of time-slots, wherein
when transmission is avoided in a time-slot it is avoided
during at least the whole of that time-slot.
Claim 6
Independent Claim
98 words
A method of operating a communication device according
to any one of the preceding claims further comprising the
steps of: acquiring information representing the point or points
in time the communication device will commence and/or
discontinue to transmit within the first radio system; acquiring information representing the point or points
in time the communication device is scheduled to commence
and/or discontinue to transmit within the second radio
system; establishing from the acquired information whether
transmission within the second radio system is planned to
occur at points in time the first radio system will commence
or discontinue to transmit.
Claim 7
Independent Claim
78 words
A method of operating a communication device according
to any one of the preceding claims further comprising the
steps of: establishing a time-window starting at a first point in
time before and ending at a second point in time after the
point of time the communication device will commence and
discontinue, respectively, to transmit within the first
radio system; avoiding transmission by the communication device
within the second radio system which is planned to occur
during the time-window.
Claim 8
Dependent Claim
79 words
A method of operating a communication device according
to claim 7 wherein transmission within the second radio
system takes place as bursts, each burst being transmitted
within a time-slot of a frame and each frame being made up
of a number of time-slots, wherein the first point in time
is set to substantially correspond to the starting point of
a time-slot and the second point in time is set to
substantially correspond to the ending point of a time-slot.
Claim 9
Dependent Claim
118 words
A method of operating a communication device according
to any one claim 1 to claim 6 further comprising the step
of: establishing a first time-window starting at a first
point in time before and ending at a second point in time
after the point of time the communication device will
commence to transmit within the first radio system; establishing a second time-window starting at a third
point in time before and ending at a fourth point in time
after the point of time the communication device will
discontinue to transmit within the first radio system; avoiding transmission by the communication device
within the second radio system which is planned to occur
during the first or the second time-window.
Claim 10
Dependent Claim
90 words
A method of operating a communication device according
to claim 9 wherein transmission within the second radio
system takes place as bursts, each burst being transmitted
within a time-slot of a frame and each frame being made up
of a number of time-slots, wherein the first point in time
and the third point in time are set to substantially
correspond to the starting points of time-slots and the
second point in time and the fourth point in time are set to
substantially correspond to the ending points of a time-slots.
Claim 11
Dependent Claim
78 words
A method of operating a communication device according
to any one of claim 5, claim 8 or claim 10 in so far as
dependent on claim 3 further comprising the step of: determining if a packet to be delayed, as a result of
delaying transmission within the second radio system,
includes compressed data covering one slot and if so
replacing the packet to be delayed with a packet of the type
corresponding to compressed data covering several slots.
Claim 12
Dependent Claim
32 words
A method of operating a communication device according
to claim 11 wherein the packet to be delayed is replaced
with a packet of the type corresponding to compressed data
covering two slots.
Claim 13
Dependent Claim
63 words
A method of operating a communication device according
to claim 11 further comprising the step of: establishing the number of slots, set equal to n, the
packet to be delayed will be delayed, and wherein the packet to be delayed is replaced with a
packet of the type corresponding to compressed data covering
m slots, where m is equal to n + 1.
Claim 14
Dependent Claim
115 words
A communication device (200) for communication in a
first radio system and in a second radio system comprising: a first radio transmitter (202) for transmitting a
signal to a radio apparatus in the first radio system, first controller means (205) for controlling the
operation of the first radio transmitter, a second radio transmitter (212) for transmitting a
signal to a radio apparatus in the second radio system, second controller means (215) for controlling the
operation of the second radio transmitter, wherein the
second controller means is adapted to avoid transmission by
the second radio transmitter which is planned to occur at
the points in time the first radio system will commence or
discontinue to transmit.
Claim 15
Dependent Claim
39 words
A communication device (200) according to claim 14
wherein the second controller means (215) is adapted to
avoid transmission by the second radio transmitter which is
planned to occur during periods of time the first radio
system will transmit.
Claim 16
Dependent Claim
31 words
A communication device (200) according to claim 14 or
claim 15 wherein the second controller means (215) is
adapted to avoid transmission by the second radio
transmitter by delaying the transmission.
Claim 17
Dependent Claim
31 words
A communication device (200) according to claim 14 or
claim 15 wherein the second controller means (215) is
adapted to avoid transmission by the second radio
transmitter by advancing the transmission.
Claim 18
Dependent Claim
73 words
A communication device (200) according to any one of
claim 14 to claim 17 wherein transmission within the second
radio system takes place as bursts, each burst being
transmitted within a time-slot of a frame and each frame
being made up of a number of time-slots, wherein when
transmission is avoided in a time-slot, the second
controller means (215) is adapted to avoid the transmission
during at least the whole of that time-slot.
Claim 19
Dependent Claim
84 words
A communication device (200) according to any one of
claim 14 to claim 18 further comprising: calculation means (220) for establishing a time-window
starting at a first point in time before and ending at a
second point in time after the point of time the
communication device will commence and discontinue,
respectively, to transmit by means of the first radio
transmitter, calculation means (220) for establishing if the second
controller means is scheduled to transmit by means of the
second transmitter during the time-window.
Claim 20
Dependent Claim
80 words
A communication device (200) according to claim 19
wherein transmission within the second radio system takes
place as bursts, each burst being transmitted within a time-slot
of a frame and each frame being made up of a number of
time-slots, wherein the calculation means (220) is adapted
to set the first point in time to substantially correspond
to the starting point of a time-slot and the second point in
time to substantially correspond to the ending point of a
time-slot.
Claim 21
Dependent Claim
131 words
A communication device (200) according to any one of
claim 14 to claim 18 further comprising: calculation means (220) for establishing a first time-window
starting at a first point in time before and ending
at a second point in time after the point in time the first
controller means will commence to transmit by means of the
first radio transmitter, calculation means (220) for establishing a second time-window
starting at a third point in time before and ending
at a fourth point in time after the point in time the first
controller means will commence to transmit by means of the
first radio transmitter, calculation means (220) for establishing if the second
controller means is scheduled to transmit by means of the
second transmitter during the first or the second time-window.
Claim 22
Dependent Claim
91 words
A communication device (200) according to claim 21
wherein transmission within the second radio system takes
place as bursts, each burst being transmitted within a time-slot
of a frame and each frame being made up of a number of
time-slots, wherein the calculation means (220) is adapted
to set the first point in time and the third point in time
to substantially correspond to the starting points of time-slots
and the second point in time and the fourth point in
time to substantially correspond to the ending points of a
time-slots.
Claim 23
Dependent Claim
87 words
A communication device (200) according to claim 16 or
any one of claim 18 to claim 22 in so far as dependent on
claim 16 further comprising means for determining if a packet to be delayed, as a
result of delaying transmission within the second radio
system, includes compressed data covering one slot, means for replacing the packet to be delayed with a
packet of the type corresponding to compressed data covering
several slots if the packet corresponds to a packet with
compressed data covering one slot.
Claim 24
Dependent Claim
33 words
A communication device according to claim 23 wherein
the means for replacing the packet to be delayed replaces
the packet with a packet of the type corresponding to
compressed data covering two slots.
Claim 25
Dependent Claim
63 words
A communication device according to claim 23 further
comprising: means for establishing the number of slots, set equal
to n, the packet to be delayed will be delayed, and wherein the means for replacing the packet to be
delayed replaces the packet with a packet of the type
corresponding to compressed data covering m slots, where m
is equal to n + 1.
Claim 26
Dependent Claim
30 words
A communication device according to any one of claim 14
to claim 25 further comprising: an open-loop modulator for generating a signal to be
transmitted by the second radio transmitter.
Claim 27
Dependent Claim
21 words
A communication device according to claim 26 wherein
the open-loop modulator comprises an voltage controlled
oscillator which incorporates a capacitance diode.
Claim 28
Independent Claim
101 words
A method of operating a communication device comprising
circuitry for communication in a radio system in which
transmission takes place as bursts, each burst being
transmitted within a time-slot of a frame and each frame
being made up of a number of time-slots, the method
comprising the steps of: i) establishing information representing the points in
time a time-slot begins and ends; ii) receiving a transmitted radio burst in the radio
system; iii) establishing whether the received radio burst is
received during said time-slot; and iv) allowing returned transmission within the time-slot
only if a packet was received during the time-slot.
Claim 29
Dependent Claim
140 words
A communication device for communication in a radio
system in which transmission takes place as bursts, each
burst being transmitted within a time-slot of a frame and
each frame being made up of a number of time-slots, the
device comprising: a radio transmitter for transmitting a signal to a
radio apparatus in the radio system, controller means for controlling the operation of the
radio transmitter, a radio receiver for receiving a transmitted burst from
a radio apparatus in the radio system, first means for establishing information representing
the points in time a time-slot begins and ends, second means for establishing whether a received radio
burst is received during said time-slot, the communication
device being characterized in that: the controller means allows the radio transmitter to
transmit during said time-slot only if a radio burst has
been received during the time-slot.
References Cited (Backward Citations)
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